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EXTEN9I0N BULLETIN E-434 (REVISION—DESTROY PREVIOUS EDITIONS) E WEED CONTROL GUIDE Field Crops COOPERATIVE EXTENSION SERVICE MICHIGAN STATE UNIVERSITY

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EXTEN9I0N BULLETIN E-434 (REVISION—DESTROY PREVIOUS EDITIONS)

E WEED CONTROL GUIDE

Field Crops COOPERATIVE EXTENSION SERVICE MICHIGAN STATE UNIVERSITY

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The Cover: The weed illustrations on the front cover were taken from NCR 281, "Weeds of the North Central States." This publication is availabh for $2.50 at the bulletin office of the Cooperative Extension Service at Michigan State University, P.O. Box 231, East Lansing, Ml 48823-0231.

1985 WEED CONTROL GUIDE FOR FIELD CROPS

HERBICIDE SAFETY

1. Read label on the container carefully.

2. Use herbicides only on crops listed on the product label.

3. Apply at time and rate recommended.

4. Drift from any herbicidal spray may injure nearby crops; therefore, do all spraying on calm days.

5. A hood or shield built over the boom will help control drift.

6. Do not spray 2,4-D or Banvel within % mile of grapes or tomatoes. (State law pro­hibits use of 2,4-D esters in certain areas.)

7. Calibrate your sprayer carefully.

CONTENTS

TABLE 1 Corn Soybeans . . . Small Grains . Forages . . . . Field Beans . Sunflowers . . Potatoes . . . . Mint Sugarbeets . . Sorghum . . .

. . .

. . .

. . .

. . .

. . .

. . .

. . .

. . . .

. . . .

. . . .

. . . .

TABLE 2

. .

. .

. . , . . , . . . . . . . .

Perennial weeds, non-selective contri TABLES 3-9

Weed Response to Herbicides

TABLE 10 Glossary of Chemical Names

. . 3

. . . 10

. . . 27

. . . 37

. . . 3 8

. . . 41

. . . 4 3

. . . 44

. . . 4 6

. . . 4 6

. . . 4 9

>1 . . 50

52

. . . 5 6

MICHIGAN STATE UNIVERSITY

Er-

COOPERATIVE EXTENSION SERVICE

MSU Is an Affirmative Action/Equal Opportunity Institution. Cooperative Extension Service programs are open to all without regard to race, color, national origin, sex, or handicap. Issued in furtherance of cooperative extension work in agriculture and home economics, acts of May 8, and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Gordon E. Guyer, Director, Cooperative Extension Service, Michigan State University, E. Lansing, Ml 48824. This information is for educational purposes only. Reference to commercial products or trade names does not imply endorsement by the Cooperative Extension Service or bias against those not mentioned. This bulletin becomes public property upon publication and may be reprinted verbatim as a separate or within another publication with credit to MSU. Reprinting cannot be used to endorse or advertise a commercial product or company.

Major Revision 10:84—6M—Ad—KMF, 70 Cents, For Sale Only File: 34.21

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Weed Control Guide for Field Crops

JAMES J. KELLS AND WILLIAM F. MEGGITT

Department of Crop and Soil Sciences

HPHE MAIN REASON for cultivating crops is to •*• control weeds. Chemicals (herbicides) often con­

trol weeds at a considerable savings over cultivation costs, and in some cases herbicides control weeds that cannot be controlled by normal tillage practices. How­ever, tillage is the only practical control measure in some situations.

Cultural Control

Minimum tillage aids in control of annual weeds. The loose soil surface left by this method makes for a dry topsoil layer which discourages growth of weed seedlings.

The field cultivator equipped with duckfoot or wide shovels is one of the best tools for the control of weeds with deep roots, such as bindweed and thistles. Use the disk or springtooth harrow just before the duck-foot shovel if the soil is firm and needs loosening. Unplowed fields of quackgrass can be effectively con­trolled by a well-constructed field cultivator with nar­row shovels if the operation is repeated often and if the season is dry.

The rotary hoe, spiketooth harrow, and weeder are effective on annual weed seedlings in row crops. Use these tools just after planting, while the crop is com­ing up or just after it is up. For effective weed con­trol, use these tools when the weed seedlings are just coming through the ground; weeds with much top-growth may not be controlled.

Plowing is usually necessary to kill and bury a heavy weed growth. Fall plowing brings roots and root-stocks to the surface where they are injured by winter freezing.

Chemical Weed Control

Many chemical weed-killers are now available. Selective control of weeds in crops may be obtained by either foliage sprays (postemergence) or applica­tion of the chemicals to the soil either as preplanting or preemergence sprays.

Preplanting sprays sometimes are applied to the weed before plowing (quackgrass).

Preplant incorporated sprays are incorporated into the soil prior to planting. This is best done by tilling in two different directions. Incorporation is necessary to prevent losses of volatile herbicides (ex. Treflan, Eptam) and increases or assures the activity of other soil applied herbicides.

Some advantages of preplant soil incorporation of herbicides are:

(1) No weed competition to the crop with early control of weeds;

(2) Weeds already controlled in cases where wet weather later delays cultivation or spraying;

(3) Less reliance on rainfall to position some herbi­cides in the soil. Generally more reliable weed control than preemergence sprays;

(4) Much more effective control of some perennial weeds (nutsedge) than with preemergence sprays.

Some disadvantages of preplant incorporation of herbicides are:

(1) Incorporation operation represents added cost and fuel usage in herbicide application;

(2) Soil compaction is increased by the incorpora­tion operation;

(3) Herbicide may be diluted by improper incor­poration (too deep) resulting in reduced weed control;

(4) "Streaking" pattern of good and poor weed control can result from incomplete incorporation. Cross-wise incorporation helps prevent this problem.

(5) Planting operations may be slowed somewhat due to herbicide application and incorporation opera­tion.

Preemergence sprays are applied after planting but before the crop appears above ground.

Some advantages of preemergence herbicide appli­cations are:

(1) No weed competition to the crop with early control of weeds;

(2) Weeds already controlled in cases where wet weather later delays cultivation or spraying;

(3) Planting and herbicide application may be done in one operation;

(4) In the case of corn, herbicides can be used which will not present a hazard to nearby 2,4-D sensi­tive crops and plants.

Some disadvantages of preemergence herbicide ap­plications are:

(1) Preemergence applications are generally in­effective under dry soil conditions. Some preemer­gence herbicides are ineffective if dry conditions per­sist for only a few days; other herbicides may give weed control after as much as 10 days to 2 weeks of dry weather;

(2) On sandy soils, heavy rains may leach the herbicide down to the germinating crop seed and cause injury;

(3) Perennial weeds usually are not controlled by preemergence herbicide applications.

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Postemergence sprays have the advantage of use in emergencies since they are not applied until the weeds are up. They can be used on any soil type, and soil moisture conditions are not a problem. However, in some cases there is greater risk of crop injury. Post-emergence sprays should not be applied when the plants are already wet with dew or rain. Postemer­gence sprays are usually more effective (though also more injurious to the crop) at high temperatures.

Temperature greatly influences the effectiveness and volatility of many postemergence herbicides. Ideally, postemergence herbicides should be applied when temperatures range betweeen 65 and 85° F. Low tem­peratures (below 60° F) may result in reduced weed control, while temperatures above 85° F may result in crop injury. Late afternoon herbicide applications are less likely to result in herbicide injury than are early morning applications. Early morning application predisposes the crop plant to danger periods of high temperatures, which increases the potential for herbi­cide injury.

Volatile herbicides such as dicamba (Banvel) or ester formulations of 2,4-D or MCP may vaporize at temperatures as low as 70° F. Once they are vapor­ized, wind may move sufficient vapors to areas with sensitive crops to cause crop injury. Extreme caution is required when applying postemergence herbicides near sensitive crops. Amine formulation eliminates the danger of vapor drift; however, spray drift (droplets) may still occur. Reduce the possibility of spray drift by using a maximum of 35 pounds pressure, maintain­ing proper spray boom height and by using fan type nozzles rather than the hollow cone type.

Herbicide Incorporation

Herbicides are incorporated into the soil for several reasons. Some herbicides must be incorporated to overcome volatility or photodecomposition losses which would occur if the materials were left on the soil surface. Other herbicides are incorporated to insure good activity in the absence of the rainfall otherwise required to move the herbicide into the weed seed germination zone. This is often referred to as herbicide "activation." Incorporation is also often required to obtain perennial weed control from soil applications of herbicides.

The most consistent incorporation (no streaking), especially when using a disk or field cultivator alone, is achieved with two passes at an angle to each other. However, new tillage implements have made one-pass incorporation of herbicides a possibility. Many growers are asking what is the best way to achieve one-pass incorporation.

Soil Conditions Although a majority of the questions concerning

incorporation concern the best implement to use for

one-way incorporation, soil condition influences the success of incorporation more than the tool used. The reliability of one-pass incorporation will also be in­fluenced by the tillage system used.

In clean tillage (low crop residue) situations, pre-emergence applications made on wet soil will likely perform as well or better than two-pass incorporated treatments. One-pass incorporation is not a good ap­proach with less than optimum soil tilth.

High crop residue levels (corn stalks disked or chisel plowed with one or two secondary tillage operations) make one-pass incorporation difficult. If the residue level is great enough to clog the incorporation tool, two-pass incorporation is advisable. The soil should also have good tilth, as outlined above.

Where ridges are left from fall plowing or use of a chisel plow in the spring, it is advisable to level the ground before herbicide application. Streaking is fa­vored by application of the herbicide to rough ground.

Incorporation Implements

Disks, especially large tandem disks, are poor tools for incorporation. Depth and ridging are difficult to control. Non-uniform distribution of the herbicide in the soil is a distinct possibility with a disk.

A disk does have a place for special applications, particularly the use of Eradicane to control quackgrass. The disk does a good job of chopping the quackgrass rhizomes required for good Eradicane activity. The disk should be operated at a depth of 4 to 5 inches and a speed of 4 to 6 mph. Incorporation must be done in two directions.

A field cultivator can give acceptable one-pass incor­poration of herbicides if special care is taken to set-up and operation. Wide sweeps, set-up so they meet, give better incorporation than points. Shanks should be close enough to give this, and three sets of sweeps are also required. It is important to follow with a leveling tool, such as a flex tine drag or spring tooth harrow, to smooth out ridges behind the cultivator.

The speed of the cultivator should be at least 6 mph, depth 3 to 4 inches. Actual incorporation will occur at one-half the tool depth. Caution must be taken not to run the rear portion of the cultivator lower than the front. If the back of the tool is lower, untreated soil can be brought to the surface burying the herbi­cide.

Danish type harrows equipped with "S" tines and rolling baskets can do a good job of one-pass incor­poration. Rolling baskets outperform other trailing operations.

Operation considerations are similar to those with the field cultivator. Again, good soil tilth is a pre­requisite for one-pass incorporation.

PTO driven tools do a good job of one-pass incor­poration. However, their application in Michigan may

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be limited. These tools are operated at lower speeds and do not have the tool width the other implements can have.

Principles of Chemical Control of Weeds

1. Weeds are easiest to kill when they are small seedlings and when conditions favor rapid growth. Crop plants also are most easily injured under these conditions. Selective sprays (see Table 1) will control the weeds with little or no injury to the crop.

2. Time of spraying and rate of applications are very important. Spraying at the wrong time often re­sults in poor weed control and greater crop injury. No crop plant is completely resistant to injury from herbicides. Too much chemical will cause damage.

3. With most preemergence herbicides, do not cultivate for at least 3 weeks after preemergence spraying unless weeds appear that are resistant to the chemical. If weeds appear and dry weather persists for 2 weeks after herbicide application, rotary hoe or cultivate shallow. Delay cultivation after post-emergence herbicide applications for at least 2 or 3 days (7 to 10 days following 2,4-D application in corn) to allow the chemical to move into stems and roots of the weed plants.

4. No one chemical used as a selective spray will kill all species of weeds. Therefore, select the right chemical for the job. The first step for successful weed control is to identify the weed species present. Some weeds are resistant to all of the present selective sprays.

5. Read current labels carefully and never apply a chemical at rates higher than recommended on the label. Use chemicals only on crops for which they are recommended on the label. Store chemicals in a room not subject to freezing temperatures and away from seed, fertilizer and other pesticides.

Herbicide Combinations

Two or more herbicides are often applied as a tank mix or in separate applications to give more consistent or broader spectrum weed control. Combinations are also used to decrease herbicide residue (for example, atrazine carryover) or to obtain adequate season-long control.

Only recommended or labeled herbicide combina­tions should be used. Growers and applicators are responsible for poor weed control, crop injury or herbicide residue from herbicides labeled for single application but used in combinations.

Pesticide — Fertilizer Compatibility

Combinations of herbicides, insecticides and/or fun­gicides applied in either water or liquid fertilizer car­riers decrease trips over the field and application costs;

however, compatibility is critical. Always test the compatibility of each mixture to be applied and follow label instructions.

A simple compatibility test requires only a glass quart jar and the pesticides and liquid fertilizer to be mixed. Place one pint of liquid fertilizer in the quart jar and add two teaspoons of the liquid pesticide. If the pesticide is a wettable powder, add two teaspoons of powder to sufficient water to form a slurry and add the slurry to the fertilizer. Cover the jar, shake well, and observe the mixture for 30 seconds. Check the mixture again after 30 minutes. If the mixture does not separate, it is compatible; however, check each batch of liquid fertilizer, as they may vary in mixing properties. Also, check compatibility if water source changes, as water pH and mineral content influence compatibility.

If more than one pesticide is to be mixed with liquid fertilizer or water, the pesticides should be premixed in liquid fertilizer or water and tested for compati­bility by mixing appropriate proportions of all com­ponents. The combination should be thoroughly agi­tated before each additional pesticide is added, and a specific mixing order should be followed. Generally, unless label directions state otherwise, add the pesti­cides being tested in the following order: first—wet-table powders, second—flowables, third—water solu­bles, fourth—surfactants and emulsifiable concentrates. Spray tanks should be at least half filled with carrier before the pesticide premixes are added. If the mixture foams excessively, separates or becomes syrupy, do not apply the mixture. Compatibility agents are avail­able which may be added to improve mixing ability.

Even if all components appear compatible, the field tank mixture will require constant, vigorous agitation to prevent separation or improper pesticide distribu­tion in the tank. Be sure the entire tank is agitated and mixed before spraying. Do not store pesticide mixtures overnight unless they are constantly agitated. Best results are obtained by applying the entire mixture in one day. (See Extension Bulletin E-1268)

Additives for Herbicide Use During the development of an herbicide, a major

effort of the chemical company is expended on the formulation of the active ingredient to optimize per­formance, mixing, and handling under diverse condi­tions. Every commercially available herbicide formu­lation contains its own particular set of additives to accomplish this purpose. However, sometimes addi­tional additives are required for specific applications or when compatibility or mixing problems occur. The herbicide label will describe the need and use of these additives. The indiscriminate use of additives should be avoided since they may not improve herbicide per­formance and may actually reduce weed control or cause crop injury.

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Additives can be referred to as "adjuvants." This merely denotes an added ingredient. Surface active additives are called surfactants. Therefore, all sur­factants are also additives or adjuvants. All herbicide formulations contain surfactants. Emulsifiable concen­trates contain emulsifiers which aid in the dispersion of the formulation into the water phase. Wettable powders contain wetting agents and dispersants which facilitate moistening the tiny particles and prevent clumping. Postemergent herbicides, such as 2,4-D and Roundup, contain wetting agents which help spread the spray over the leaf surface.

When to Use Additives

Some herbicides may be applied either to the soil or postemergence so the addition of a surfactant is left to the user. Sometimes additives are only required for postemergence treatments made during adverse cli­matic conditions. In other cases, the nature of the herbicide may necessitate addition of the surfactant to the spray mix rather than the formulation. The herbicide label always gives directions for such addi­tive requirements.

Although claims have been made for additives in­creasing the effectiveness of soil-applied herbicides, there is no independent data to support these claims. Research in this area was conducted at several univer­sities across the country. These experiments failed to show any benefit from the inclusion of spray additives with soil applied herbicides. Additives are used with postemergence applications to aid coverage of leaf sur­faces and increase penetration into the leaf. Use of additives for soil applications of herbicides can help prevent clogging of lines and nozzles.

Concentrated Crop Oils

"Concentrated" oil additives contain higher percent­ages of emulsifier, combinations of oil, or differing emulsifiers and surfactants than the crop oils or vege­table oils previously used. Concentrated crop oils are generally recommended at a rate of 1 quart per acre.

These additives are recommended for use with post-emergence applications of atrazine and Basagran. They should also be used in postemergence applications on sugarbeets when large weeds are present or the weeds are not vigorously growing. Aatrex and Basagran labels contain directions on the use of additives.

There is a greater risk for crop injury when using additives with postemergence atrazine applications. Injury is frequently associated with cold, wet or cloudy conditions. The injury appears as a temporary stunt­ing plus necrosis of the leaf margins. Banvel, 2,4-D, or Bladex should not be included in a spray mix of atrazine plus crop oil concentrate or severe injury to the corn may occur.

The use of crop oil concentrate is recommended with Basagran to insure good coverage of the weed foliage.

Basagran requires good coverage for optimum weed control. Soybean injury can be increased with the addition of crop oil concentrate to Basagran sprays. When soybeans are growing poorly or were injured from soil applied herbicides, care must be exercised in the use of Basagran plus crop oil concentrate.

Adjuvants, Surfactants, Wetting Agents, Soaps

Many spray additives are currently available and many exaggerated claims have been made for them. In most cases, these materials are no better than crop oil concentrates. In fact, under poor environmental conditions for postemergence weed control, the crop oil concentrates can be slightly superior. Remember that any benefit comes only in postemergence applica­tions, not soil applied herbicides. Also, they aid per­formance of the herbicide in adverse conditions but are not a way to use less herbicide.

The Bladex 80W label calls for the addition of a surfactant or vegetable oil for postemergence applica­tions under droughty conditions. Weeds can harden off in this type of environment and become more diffi­cult to kill. However, because of the increased chance of crop injury and the infrequency of these conditions in the spring, additions of surfactants or oils are not recommended for postemergence Bladex 80W use in Michigan.

The Paraquat CL label calls for the addition of a nonionic surfactant (Ortho X-77). Good coverage is required for this contact herbicide. When paraquat is sprayed with fertilizer solution, be sure the rate of surfactant is increased as outlined on the label.

Roundup is formulated with a surfactant and further additives should not be made to avoid excessive leaf run-off. The addition of a defoaming agent can be a help if excessive foaming is a problem. This is ex­plained in the "Mixing" portion of the Roundup label.

Compatibility Problems

Compatibility problems in tank mixing herbicides usually occur when mixing directions are not followed. Mixing two herbicides in concentrated form, adding an EC to the spray tank first rather than first suspend­ing the wettable powder, insufficient agitation, exces­sive agitation, and air leaks are some of the causes of compatibility problems. Problems are much more likely when mixing herbicides with fluid fertilizer. The fertilizer solution is already loaded to near capacity with nutrients. Adding a herbicide to the already loaded solution may cause problems. Also, the fer­tilizer may interfere with the herbicide formulation additives. Since fertilizer may vary greatly from batch to batch, the only safe procedure is to test for com­patibility in a small container before mixing a large quantity. If compatibility problems are encountered, the addition of compatibility agents may help.

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Foaming is usually due to excessive agitation or a bypass line that empties above the spray solution level in the spray tank. When foaming is a problem, addi­tion of a defoamer can help.

Preslurry the powder if you have problems in get­ting a wettable powder to wet and become suspended. Adding a wetting agent to the spray tank will some­times correct a floating powder problem.

Definitions

1. Adjuvant—Any substance which enhances the her­bicide effectiveness, an "added ingredient."

2. Surfactant—A surface active material which can facilitate emulsifying, dispersing, spreading, wet­ting, sticking, or other surface-modifying charac­teristics of herbicide solutions.

3. Emulsifter—Promotes the suspension of one liquid in another.

4. Wetting Agent—Reduces water surface tension causing better contact between spray solution and treated solution (Spreader).

5. Soap—Sodium or potassium salts of fatty acids. Can form insoluble materials in hard water. Deter­gents are synthetic materials used for cleaning.

6. Sticker—Deposit builder, increases herbicide adhe­sion to plant surface.

7. Defoaming Agent—Self-explanatory.

8. Compatibility Agent or Cosolvent—May aid in dis­

persion of otherwise incompatibile mixture.

Soil Type and Organic Matter

Soil texture (sand, silt, clay) and organic matter influence the effectiveness of soil-applied herbicides. Herbicide rate recommendations in this bulletin are given for medium-textured soils with greater than 3 % organic matter. Clay and organic matter adsorb herbi­cides, making them less available to germinating weeds and crop plants. Soils with high clay and organic matter content require greater herbicide rates for adequate weed control. Sandy soils with low or­ganic matter content require careful herbicide rate selection to avoid crop injury.

Soil pH can influence the activity of soil applied herbicides. Some herbicides (metribuzin) are more available at higher soil pH. Rates must be reduced to avoid crop injury. Knowledge of the soil pH is needed for proper rate determination.

Organic matter analysis is available through county offices of the Cooperative Extension Service or directly through the MSU Soil Testing Laboratory. Organic matter analysis may he determined on soil samples submitted for N-P-K analysis for an additional charge. Organic matter levels change slowly and may need to be checked every four years.

Organic matter analyses are only as accurate or representative as the soil sample, so each field should be checked individually. See Extension Bulletin E-498, Sampling Soils, for proper soil sampling procedure.

Follow herbicide label recommendations and ad­just herbicide rate for soil texture and organic matter as specified on the label.

Herbicide Residues and Bioassay

With the advent of preplant and preemergence herbicides which give season-long weed control, the accumulation of herbicides in the soil and their influ­ence on subsequent crops in the rotation have become important in crop management. This is particularly true since atrazine has come into common use on corn. However, when used at recommended rates in seasons of normal rainfall and temperature, most recom­mended herbicides for field crops do not present a problem on crops planted the following season. Ex­ceptions are listed in "Remarks" column of Table 1.

There have been reports of injury to crops following atrazine applications on corn. There is more likely to be a problem with herbicide residues in a season of limited rainfall and cool temperatures, due to the slow dissipation of the herbicide. (See Extension Bulletin E-1213)

Carry-over problems have been most commonly reported for two groups of herbicides, the triazines (ex. atrazine) and the dinitroanilines. If soybeans follow corn, or sugar beets follow a crop treated with dinitroaniline and if herbicide carry-over is a possibility, a bioassay late in the fall prior to freeze-up or early in the spring may indicate whether enough herbicide is present to harm the crop. A herbicide bioassay is a means of biologically measuring the level of herbicide in the soil. The bioassay procedure is a relatively simple test but a few basic steps should be followed.

1. Collect soil from several locations in the field as when taking soil samples. Reliability of the assay depends on accurate sampling. Sample soil to the depth the field has been tilled. Approxi­mately 5 lb. of soil are needed for each sample. Collect an equal amount of soil from an adjacent field where it is known no herbicide has been applied. This second sample is used as a "check."

2. Start bioassay within one or two weeks after soil is collected to prevent the loss of herbicide under warm conditions. If the assay cannot be run im­mediately, store the soil in a cool place, or even allow it to freeze.

3. If soil is wet, allow it to dry so that it may be worked easily. If the soil is cloddy, crush the clods but do not pulverize.

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4. Partially fill two 1-qt. containers with soil, one with the soil being tested and the other with soil from the "check" field. Punch holes in the bottom of the containers to allow drainage. Tin cans or milk cartons make satisfactory containers.

5. Plant 15 seeds of a sensitive crop in each container and cover with Vz inch of soil, Wet the soil but do not saturate. Oats are very sensitive to both triazines and dinitroanilines, and sugar beets and sorghum are extremely sensitive to dinitroanilines. Place exactly the same number of seeds in each container. By knowing the exact number of seeds planted, seedling emergence can be measured. Do not plant too many seeds or the seedlings may compete for the herbicide and decrease the injuri­ous effects.

6. Place containers in a warm place (70 to 75° F ) , preferably in a window to receive as much sun­light as possible. Additional artificial light should also be supplied to obtain approximately a 15-hour day length. Water plants sparingly, but do not let soil dry out.

7. Determine plant emergence, and monitor plant growth for at least three weeks after planting. Compare "check" plants with those in the soil being tested.

8. Atrazine injury may cause yellowing of the oat leaves, with the plant becoming droopy and finally dying, or if carry-over is marginal, stunting may occur. Stunting can be determined by a compari­son with "check" plants. Dinitroaniline injury may result in a decrease in seedling emergence and/or stunting of the sugar beet or sorghum.

9. If any evidence of herbicide carry-over is observed, it is advisable to plant a resistant crop.

Weed Sprayers

Crop injuries often result when sprayers used for weed control are also used for disease and insect con­trol. Some chemicals are more difficult to wash from a sprayer than others, and wooden tanks are more difficult to clean than steel tanks. Hand sprayers of 3- or 4-gal. capacity are suitable for small areas of 1 acre or less and for patch spraying. Tractor-mounted sprayers driven from the power takeoff are very satis­factory for larger areas.

A good weed sprayer should: 1. Have a pump which is inexpensive, easily replaced,

resistant to wear and chemicals and has a mini­mum capacity of 4 gal. per minute.

2. Provide some means of keeping the solution well mixed. This can be by mechanical or jet agitation, using a bypass from the pump. Be sure the agita­tion mixes the entire tank. An agitator mounted too far from the tank bottom can leave an unmixed layer on the bottom.

3. Have 50-mesh screens for suction line and nozzles.

4. Have a gauge which measures pressure accurately in the range of 20 to 100 lb. per square inch.

5. Have flat fan nozzles with replaceable tips. Wide angle nozzles (73 to 80 degrees) will permit the boom to be carried closer to the ground and thus reduce spray drift.

Cleaning and Storage

Keep weed sprayers clean. Where soil applications only are practiced, thorough rinsing with water is sufficient. For other spraying purposes, wash out the sprayer (tank, hose, boom, nozzles) with one of the following in 100 gal. water:

1. 1 gal. household ammonia (allowed to stand in sprayer overnight).

2. 5 lb. of sal soda. 3. 8 lb. trisodium phosphate.

Corrosion and mechanical damage to pumps, tanks, nozzles, etc. may result from leaving water in spray equipment over winter. Thoroughly clean spray equip­ment after each spraying operation; however, even when properly cleaned, some water may remain in the sprayer. To prepare the spray equipment for storage, disconnect all hoses, and allow all water to drain. Coat all bare metal parts with oil or a rust inhibitor. Disassemble metal nozzles, and store them in oil. Pre­pare the sprayer pump for storage based on the manu­facturer's recommendations.

Band Application In cultivated crops, spraying narrow bands of herbi­

cide over the rows will take less material per acre, cutting the cost per acre for the chemical. Where chemical costs are high, band spraying may be justi­fied. However, with band spraying, timely cultivation of weeds in the unsprayed area between rows is neces­sary. In seasons when the soil is too wet to cultivate, overall spraying has the advantage of controlling weeds between the rows.

When band spraying, be very careful to maintain the proper rate of application on the area sprayed. (If you lower the spray boom to narrow the area covered by a given nozzle, remember that each nozzle is still delivering the same amount of spray mixture as it did on the wider area.)

Accurate Calibration Accurate sprayer calibration is essential for effective

chemical weed control without crop injury. Calibrate a new sprayer before use and recalibrate a sprayer each year before using. MATERIALS REQUIRED

A quart container graduated in ounces. Sufficient string to tie container to nozzle tip.

PRELIMINARY STEPS

1. Make certain that nozzle tips are of proper type for the spray job and of proper size for gal./acre.

8

Page 9: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

2. Be sure all nozzle tips are of the same size and type and that screens are of proper mesh. (For most wettable powders, 50-mesh or coarser screens are recommended.) Check nozzle delivery. All nozzles should deliver within 10% of each other.

3. For spraying wettable powders, be sure the sprayer is equipped with some type of jet or mechani­cal agitation.

PROCEDURE

1. In a band application, accurately determine the width, in inches, of the band sprayed. In a broad­cast application, measure the distance, in inches, between two adjacent nozzles.

2. Locate this width in the table below and read off the corresponding course distance.

WIDTH COURSE DISTANCE (inches) (feet)

8 510 10 408 12 340 14 291 16 255 18 227 20 204 22 185 24 170 26 157

3. In the field to be sprayed, mark off course of the proper distance.

4. Tie quart container to one nozzle on the sprayer so as to catch all of that nozzle's spray when sprayer is turned on.

5. Start a distance back from the beginning of the course to get up to operating speed, and turn sprayer ON at beginning of course and OFF at end of course.

6. Remove quart container, and read volume col­lected IN OUNCES.

7. Ounces collected = gal./acre. This procedure can be used to calibrate sprayers

for both banded and broadcast type applications. For a given recommendation, the actual amount of mate­rial to be applied per square foot of soil treated should be the same for both types of application. Banding reduces the amount of chemical used by reducing the number of square feet treated per acre.

After using the above procedure for calibration of sprayer, remember that the gal./acre figure deter­mined is for each acre (43,560 sq. ft.) treated, NOT necessarily each acre driven over. In a broadcast ap­plication, the acres treated will be equal to the acres driven over.

Granular Formulations Herbicides are available in granular form for dry

application. Granules are usually applied in a band over the row at planting time, but they may also be

broadcast. Usually, equal weed control can be ex­pected from granular and spray formulations, but in some cases granules have not given as good weed con­trol as the sprays. This generally has been due to either the use of equipment giving nonuniform dis­tribution of the granules or to formulations with too high a concentration, resulting in inadequate volume for uniform distribution.

Granular herbicides eliminate the need for a water supply and they reduce the drift hazard. But there still is a volatility hazard from granular formulations of 2,4-D ester or dicamba applied near sensitive crops— especially grapes and tomatoes. Granules give best results on fine, firm seedbeds. A wide, flat press wheel on the planter is desirable for band application at planting. Weed control may be hampered when granules are applied on a rough seedbed, because of uneven application, such as that often obtained with minimum tillage.

The use of granular formulations does not eliminate the need for calibration. Various materials will "feed" diflFerently because of variations in carrier and in particle size. Therefore, granular applicators, like sprayers, should be accurately calibrated.

Herbicide Rates and Spray Volume Table 1 lists chemicals which will give satisfactory

weed control without injury to crops, except as noted under "Remarks." The volume of water to use will vary with the herbicide, although generally 10 to 40 gal. per acre and a spraying pressure of 30 to 40 lb. is recommended for ground equipment. A minimum of 10 gal. of water per acre is recommended for the phenoxy herbicides [2,4-D, MCPA, 4-(2,4-DB)]. With wettable powders such as atrazine and linuron, use nozzles that deliver at least 15 gal. per acre. Use 30 to 40 gal. of spray per acre when spraying quack-grass with atrazine or dalapon. Some contact type postemergence herbicides (Basagran, Blazer) require a minimum of 20 gallons per acre spray volume and 40 psi spray pressure to insure adequate coverage. Flat fan nozzles are effective for herbicide applications. Hollow cone nozzles can also give good results, espe­cially for postemergence applications made at higher pressures. If higher pressures are used, be sure the nozzles are designed to be operated at the increased pressure. Operating nozzles beyond the specified pres­sure range will result in a poor spray pattern, insuffi­cient coverage, and a lack of weed control.

Some herbicides are available in a number of dif­ferent formulations and concentrations. For this reason the recommended rates in Table 1 (col. 3) are given as pounds of active ingredients per acre. Thus when a liquid formulation contains 4 lb. of active ingredient (or acid equivalent) per gallon, 1 pt. will provide Vz lb. of active ingredient, or 1 qt. will provide 1 lb. of active ingredient.

Page 10: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

TABL

E 1

—CH

EMIC

ALS

FOR

WEE

D CO

NTRO

L IN

FIE

LD C

ROPS

IM

PO

RTA

NT:

R

EAD

TH

E

Rat

es

are

expr

esse

d in

pou

nds

of a

ctiv

e in

gred

ient

(a

.i.)

per

acre

for

th

e ar

ea a

ctua

lly

spra

yed:

rat

es i

n fo

rmul

atio

n co

lum

n ar

e gi

ven

as

poun

ds

or l

iqui

d m

easu

re

of p

rodu

ct

unle

ss o

ther

wis

e no

ted.

(N

OT

E:

Com

mer

cial

ra

tes

are

expr

esse

d in

pt

or q

t or

gal

or

lb).

App

ly

all

agri

cult

ural

ch

emic

als

in a

ccor

danc

e w

ith

regu

lati

ons

and

labe

ls a

s to

rat

es,

tim

ing

and

crop

s fo

r w

hich

th

ey

may

be

us

ed.

Rat

es r

ecom

men

ded

in t

his

bull

etin

ar

e fo

r m

ediu

m

text

ured

so

ils

wit

h 3%

or

gre

ater

org

anic

m

atte

r.

Com

mer

cial

at

razi

ne

is a

vail

able

un

der

seve

ral

trad

emar

ks.

Atr

azin

e is

for

mul

ated

as

80

W (

80%

w

etta

ble

pow

der)

—1%

lb

of p

rodu

ct

equa

ls

1 lb

of

acti

ve

ingr

edie

nt—

4L

(flo

wab

le)—

1 qt

of

pro

duct

eq

uals

1

lb o

f ac

tive

in

gred

ient

—an

d N

ine-

O

(90%

w

ater

di

sper

sibl

e gr

anul

e)—

1.1

lb o

f pr

oduc

t eq

uals

1 l

b of

act

ive

ingr

edie

nt.

Pri

ncep

is

also

ava

ilab

le

as

80W

, 4L

an

d as

a

90%

w

ater

di

sper

sibl

e gr

anul

e (C

alib

er

90).

B

lade

x is

av

aila

ble

as 8

0W

or

4L.

Lex

one

and

Senc

or

are

avai

labl

e as

50

W

(50%

w

etta

ble

pow

der)

2 lb

of

prod

uct

equa

ls 1

lb

of a

ctiv

e in

gred

ient

—4

lb/g

al

flow

able

fo

rmul

a-

FOLL

OW

ING

B

EFO

RE

US

ING

tion

s (L

exon

e 4L

, Se

ncor

4)—

l qt

of

prod

uct

equa

ls

1 lb

of

acti

ve

ingr

e­di

ent

and

as

75%

dr

y fl

owab

le

form

ulat

ions

(L

exon

e D

F,

Senc

or

DF

)—I/

s lb

of

prod

uct

equa

ls

1 lb

of

acti

ve

ingr

edie

nt.

Lor

ox a

nd L

inex

ar

e av

aila

ble

as a

50%

w

etta

ble

pow

der

or

4L.

Vol

umes

of

2,4

-D a

nd M

CP

A

are

base

d on

3.8

lb/

gal

form

ulat

ions

.

Nor

tron

is

ava

ilab

le

as a

1.5

lb/

gal

liqu

id

(Nor

tron

E

.C.)

—1

qt

of

prod

uct

equa

ls

0.37

5 lb

of

acti

ve

ingr

edie

nt—

and

as a

4 l

b/ga

l fl

owab

le

(Nor

tron

F

low

able

)—1

qt o

f pr

oduc

t eq

uals

1 l

b of

act

ive

ingr

edie

nt.

Am

iben

is

ava

ilab

le a

s a

liqu

id—

2 lb

/gal

—on

e ga

l eq

uals

2 l

b of

ac

tive

in

gred

ient

an

d as

a d

ry

solu

ble

gran

ule

(Am

iben

D

S)—

1 lb

of

pr

oduc

t eq

uals

% lb

of

acti

ve

ingr

edie

nt.

Man

y he

rbic

ides

m

ay

also

be

ap

plie

d as

gra

nule

s,

impr

egna

ted

on

dry

fert

iliz

er,

or w

ith

anhy

drou

s am

mon

ia.

Wit

h th

ese

appl

ica­

tion

m

etho

ds,

unif

orm

ap

plic

atio

n of

th

e he

rbic

ide

is n

eces

sary

fo

r ac

cept

able

w

eed

cont

rol.

WEE

D CO

NTRO

L G

UIDE

FOR

CO

RN

Wee

d C

ontr

olle

d H

erbi

cide

R

ate

lb/A

a.i.

F

orm

ulat

ion/

A

Rem

arks

and

Lim

itat

ions

nnua

l br

oadl

eave

s rin

ual

gras

ses

(exc

ept

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pani

-cu

m,

witc

hgra

ss

and

crab

gras

s)

atra

zine

(c

omm

erci

al p

rodu

ct)

Pre

plan

t-2

-Min

eral

Soi

l 2%

lb

80W

or

2

qt4

L

or

2%

lb 9

0% W

DG

— U

sual

ly o

btai

n se

ason

-lon

g co

ntro

l. —

Do

not

plan

t sm

all g

rain

, sm

all

seed

for

ages

, su

gar

beet

s,

fiel

d be

ans

or v

eget

able

cro

ps t

he y

ear

follo

win

g co

rn.

— R

ates

of

2% t

o 3

lb p

er a

cre

may

be

nece

ssar

y on

soi

l hi

gh i

n or

gani

c m

atte

r (5

to

8%).

Res

idue

s m

ore

likel

y to

per

sist

if s

oil

cond

ition

s ar

e co

ol

and

dry.

Inc

orpo

ratio

n is

not

nec

essa

ry.

Page 11: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(inc

ludi

ng

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pa

ni-

cum

, w

itch

gras

s,

crab

-gr

ass

and

sand

bur)

N

uts

edg

e

atra

zine

(c

omm

erci

al p

rod

uct

) 1

+ +

buty

late

4

(Sut

an

Plu

s or

Gen

ate

Plu

s)

IV*

lb 8

0W

or

1

qt

4L

or

1.1

lb 9

0%

WD

G

+ 4

%p

t

DO

NO

T U

SE

ON

CO

RN

S

EE

D S

TO

CK

S (B

reed

ers,

F

ound

atio

n,

or

Incr

ease

).

Mus

t b

e in

corp

orat

ed

or m

ixed

in

to

top

2 to

3

in.

of

soil

im

med

iate

ly a

fter

ap

plic

atio

n;

Usu

ally

obt

ain

seas

on-l

ong

cont

rol.

B

lade

x m

ay b

e in

clud

ed f

or m

ore

effe

ctiv

e fa

ll p

anic

um

cont

rol.

(See

rem

arks

for

thr

ee-w

ay t

ank

mix

es,

pg

. 12

.)

A c

omm

erci

al p

repa

ckag

ed m

ix o

f Su

tan

Plu

s an

d at

ra­

zine

(Su

tazi

ne)

is a

vail

able

. •

Incr

ease

Sut

an

Plu

s ra

te t

o 6

pt

for

mor

e ef

fect

ive

nut-

sedg

e co

ntro

l.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(inc

ludi

ng

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pani

­cu

m,

wit

chgr

ass

and

crab

gras

s)

Nu

tsed

ge

Qua

ckgr

ass

atra

zine

(c

omm

erci

al p

rod

uct

)

+ E

PT

C w

ith

prot

ecta

nt

(Era

dica

ne)

1 + 6

1% l

b 8

0W

or

lq

t4L

or

1.

1 lb

90

% W

DG

+

3%

q

t

Era

dica

ne

Ext

ra

is

also

av

aila

ble

and

shou

ld

be

used

at

the

rat

e of

4 q

t pe

r ac

re.

Inco

rpor

ate

to a

dep

th

of 4

to

5 in

. im

med

iate

ly

afte

r ap

plic

atio

n w

ith

a di

sk i

n bo

th

dire

ctio

ns.

Qua

ckgr

ass

cont

rol

wit

h no

so

il re

sidu

e or

ca

rry-

over

. E

radi

cane

or

Era

dica

ne

Ext

ra

rate

may

be

red

uced

to

5

pt p

er a

cre

if q

uack

gras

s or

nut

sedg

e ar

e no

t a

prob

­le

m.

Bla

dex

may

be

incl

uded

for

mor

e ef

fect

ive

fall

pan

icum

co

ntro

l. (S

ee r

emar

ks f

or t

hree

-way

tan

k m

ixes

, pg

.12.

)

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(inc

ludi

ng

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pani

­cu

m,

wit

chgr

ass

and

crab

gras

s)

Nu

tsed

ge

atra

zine

(c

omm

erci

al p

rod

uct

)

+ m

etol

achl

or

(Dua

l)

1 + 2

IV*

lb 8

0W

or

lqt4

L

or

1.1

lb 9

0% W

DG

+ lq

t

Giv

es b

ette

r nu

tsed

ge c

ontr

ol i

f in

corp

orat

ed 2

to

3 in

. W

ill

be

mor

e ef

fect

ive

prep

lant

, es

peci

ally

on

nuts

edge

, in

are

as w

her

e so

ils

tend

to

be

dry.

B

lade

x m

ay b

e in

clud

ed f

or m

ore

effe

ctiv

e fa

ll p

anic

um

cont

rol.

(See

rem

arks

for

thr

ee-w

ay t

ank

mix

es,

pg.1

2.)

• In

corp

orat

ed

Dua

l ra

te o

f on

e q

uar

t m

ay o

nly

give

fai

r co

ntro

l of

som

e an

nual

gra

sses

(e

spec

iall

y fa

ll pa

nicu

m)

and

nuts

edge

. •

A c

omm

erci

al

prep

acka

ged

mix

of

D

ual

plus

at

razi

ne

(BIC

EP

) is

ava

ilab

le.

atra

zine

(c

omm

erci

al p

rod

uct

)

+ al

achl

or

(Las

so)

1 + 2%

IV*

lb 8

0W

or

1

qt

4L

or

1.1

lb 9

0%

WD

G

+ 2

%q

t

For

fa

ir

to

good

co

ntro

l of

nu

tsed

ge,

incr

ease

ra

te

of

Las

so

to 3

qt

per

acre

. W

ill

be m

ore

effe

ctiv

e pr

epla

nt,

espe

cial

ly o

n nu

tsed

ge,

in a

reas

whe

re s

oils

ten

d to

be

dry.

IV

z q

t p

er

acre

of

L

asso

sh

ould

b

e us

ed

for

effe

ctiv

e fa

ll pa

nicu

m c

ontr

ol.

Bla

dex

may

be

incl

uded

for

mor

e ef

fect

ive

fall

pan

icum

co

ntro

l.

(See

rem

arks

for

thr

ee-w

ay t

ank

mix

es,

pg.1

2.)

• A

com

mer

cial

pr

epac

kage

d m

ix o

f L

asso

plu

s at

razi

ne

is a

vail

able

.

Page 12: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

— P

repl

ant —

Min

eral

Soi

l (C

ontin

ued)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

1%

+ 4

For

mu

lati

on/A

2% lb

80W

or

1%

qt

4L

+ 4%pt

Rem

ark

s a

nd

Lim

itat

ion

s

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(inc

ludi

ng

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pa

ni-

cum

, w

itch

gras

s an

d cr

abgr

ass)

N

utse

dge

to

cyan

azin

e (B

lade

x)

+ bu

tyla

te

(Sut

an P

lus

or G

enat

e P

lus)

cyan

azin

e (B

lade

x)

+ al

achl

or

(Las

so)

cyan

azin

e (B

lade

x)

+ m

etol

achl

or

(Dua

l)

1%

+ 2%

1%

+ 2

•DO

NO

T U

SE

ON

C

OR

N

SE

ED

S

TO

CK

S (B

reed

ers

Fou

ndat

ion,

or

In

crea

se).

M

ust

be

inco

rpor

ated

or

mix

ed

into

to

p 2

to 3

in

. of

so

il im

med

iate

ly

afte

r ap

plic

atio

n.

- No

resi

due

carr

yove

r.

• C

an b

e us

ed w

here

res

idue

pro

blem

s ha

ve e

xist

ed

wit

h at

razi

ne.

Incr

ease

Sut

an

Plu

s or

Gen

ate

Plu

s ra

te t

o 6

pt

for

mor

e ef

fect

ive

nuts

edge

co

ntro

l. -

Bot

h m

ater

ials

wea

k on

pig

wee

d.

2%

lb

80

W

or

1% q

t 4

L

+ 2

%q

t

No

resi

due

carr

yove

r.

Can

be

used

whe

re r

esid

ue p

robl

ems

have

exi

sted

wit

h at

razi

ne.

2% l

b SO

W

or +

lqt

No

resi

due

carr

yove

r.

Can

be

used

wh

ere

resi

due

prob

lem

s ha

ve e

xist

ed w

ith

atra

zine

.

atra

zine

%

(c

omm

erci

al p

rodu

ct)

+ +

cyan

azin

e 1

(Bla

dex)

+ +

buty

late

4

(Sut

an P

lus

or G

enat

e P

lus)

or

or

E

PT

C

wit

h pr

otec

tant

4

(Era

dica

ne)

or

or

met

olac

hlor

2

(Dua

l)

or

or

alac

hlor

2

%

(Las

so)

% l

b 8

0W

or

%

qt4

L

or

% l

b 9

0%

WD

G

+ 1% l

b 8

0W

or

lq

t4L

+

4%

pt

or

5p

t

or

lqt

or

2%

qt

NO

TE

S

PE

CIF

IC

RE

MA

RK

S A

BO

VE

F

OR

SU

TA

N

PL

US,

E

RA

DIC

AN

E

EX

TR

A,

DU

AL

A

ND

L

ASS

O.

Can

be

used

to

red

uce

pos

sibi

lity

of

atra

zine

car

ry-o

ver.

M

ay

subs

titu

te

Pri

ncep

fo

r at

razi

ne

if

fall

pa

nicu

m

is

a se

vere

pr

oble

m.

Era

dica

ne

Ext

ra

is

also

av

aila

ble

and

shou

ld

be

used

at

the

rat

e of

5 p

t pe

r ac

re.

Page 13: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Pre

emer

genc

e —

Min

eral

Soi

l A

nnua

l br

oadl

eave

s A

nnua

l gr

asse

s (i

nclu

ding

fal

l pa

nicu

m,

gree

n fo

xtai

l, gi

ant

fox­

tail

, witc

hgra

ss a

nd c

rab-

gras

s)

atra

zine

1

(com

mer

cial

pro

duct

)

+ al

achl

or

(Las

so)

+ 2

1̂4

lb 8

0W

or

lqt4

L

or

1.1

lb 9

0% W

DG

+ 2q

t

2 V

z qt

per

acr

e of

Las

so s

houl

d be

use

d fo

r m

ore

ef­

fect

ive

fall

pani

cum

co

ntro

l. B

lade

x m

ay b

e in

clud

ed f

or m

ore

effe

ctiv

e fa

ll pa

nicu

m

cont

rol.

(See

rem

arks

for

thr

ee-w

ay t

ank

mix

es, p

g. 1

4.)

atra

zine

(c

omm

erci

al p

rodu

ct)

+ m

etol

achl

or

(Dua

l)

+ 2

1% l

b 80

W

or

lqt4

L

or

1.1

lb 9

0% W

DG

+ lq

t

Bla

dex

may

be

incl

uded

for

mor

e ef

fect

ive

fall

pani

cum

co

ntro

l. (S

ee r

emar

ks f

or t

hree

-way

tan

k m

ixes

, pg.

14.

)

03

atra

zine

(c

omm

erci

al p

rodu

ct)

+ pe

ndim

etha

lin

(Pro

wl)

+ 1%

1% l

b 80

W

or

lqt4

L

or

1.1

lb 9

0% W

DG

+

l%q

t

DO

NO

T I

NC

OR

POR

AT

E.

Do

not

use

on s

andy

soi

ls w

ith

less

tha

n 1.

5% o

rgan

ic

mat

ter.

B

lade

x m

ay b

e in

clud

ed f

or m

ore

effe

ctiv

e fa

ll pa

nicu

m

cont

rol.

(See

rem

arks

for

thr

ee-w

ay t

ank

mix

es, p

g. 1

4.)

Do

not

use

for

no-t

ill c

orn.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(inc

ludi

ng f

all

pani

cum

, gr

een

foxt

ail,

gian

t fo

x­ta

il, w

itchg

rass

and

cra

b-gr

ass)

cyan

azin

e (B

lade

x)

+ al

achl

or

(Las

so)

1%

+ 2

1.9l

b80

W

or

1% q

t 4L

+ 2q

t

No

resi

due

carr

y-ov

er.

Can

be

used

whe

re r

esid

ue p

robl

ems

have

exi

sted

with

at

razi

ne.

cyan

azin

e (B

lade

x)

+ m

etol

achl

or

(Dua

l)

ltt

+ 2

1.9

lb 8

0W

or

l%q

t4L

+

lqt

No

resi

due

carr

y-ov

er.

Can

be

used

whe

re r

esid

ue p

robl

ems

have

exi

sted

wit

h at

razi

ne.

cyan

azin

e (B

lade

x)

+ pe

ndim

etha

lin

(Pro

wl)

1%

+ 1%

1.91

b80W

or

l%

qt4

L

+ l%

qt

Do

not

use

on s

andy

soi

ls w

ith

less

tha

n 1.

5%

orga

nic

mat

ter.

B

oth

mat

eria

ls w

eak

on p

igw

eed.

D

o no

t us

e fo

r no

-till

cor

n.

Page 14: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

P

reem

erge

nce

— M

iner

al S

oil

(Con

tinue

d)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i

. F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

^

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(exc

ept

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pani

-cu

m,

wit

chgr

ass

and

crab

gras

s)

atra

zine

(c

omm

erci

al p

rod

uct

) 2

% l

b 80

W

or

2q

t4L

or

2%

lb

90

% W

DG

Usu

ally

obt

ain

seas

on-l

ong

cont

rol.

D

o no

t pl

ant

smal

l gr

ain,

sm

all

seed

ed

fora

ges,

su

gar

beet

s, f

ield

bea

ns o

r ve

geta

ble

crop

s th

e ye

ar

foll

owin

g th

is

trea

tmen

t.

Rat

es o

f 2

% t

o 3

lb p

er a

cre

may

be

nece

ssar

y on

soi

ls

high

in

orga

nic

mat

ter

(5 t

o 8

%).

R

esid

ues

mor

e li

kely

to

pers

ist

if s

oil

cond

itio

ns a

re c

ool

and

dry.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(inc

ludi

ng

fall

pa

nicu

m,

gree

n fo

xtai

l, gi

ant

fox­

tail

, w

itch

gras

s an

d cr

ab-

gras

s)

atra

zine

(c

omm

erci

al p

rod

uct

)

+ cy

anaz

ine

(Bla

dex)

+ al

achl

or

(Las

so)

or

pend

imet

hali

n (P

row

l)

or

met

olac

hlor

(D

ual)

alac

hlor

(L

asso

)

Vz + 1 + 2 or \v*

or

2 2

% l

b 8

0W

or

%

qt4

L

or

% l

b 9

0%

WD

G

+ IV*

lb 8

0W

or

lq

t4L

+ 2

qt or

l%q

t

or

lqt

2q

t

Can

be

used

to

redu

ce p

ossi

bili

ty o

f at

razi

ne c

arry

-ove

r.

• S

ee s

peci

fic

rem

arks

for

Las

so,

Dua

l an

d P

row

l in

com

­bi

nati

on w

ith

atra

zine

. M

ay

subs

titu

te

Pri

ncep

fo

r at

razi

ne

if

fall

pa

nicu

m

is

a se

vere

pr

oble

m.

Ann

ual

gras

ses

(inc

ludi

ng

fall

pa

nicu

m,

gree

n fo

xtai

l, gi

ant

fox­

tail

, w

itch

gras

s an

d cr

ab-

gras

s)

Pig

wee

d

2%

qt

of

Las

so

shou

ld

be u

sed

for

mor

e ef

fect

ive

fall

pa

nicu

m

cont

rol.

Fol

low

wit

h 2,

4-D

am

ine

or B

anve

l po

stem

erge

nce

for

cont

rol

of a

nnua

l br

oadl

eave

d w

eeds

if

need

ed.

App

lica

tion

m

ay b

e m

ade

prep

lant

. (S

ee

rem

arks

und

er

"Nut

sedg

e co

ntro

l.")

S

ee 2

,4-D

am

ine

and

Ban

vel

rem

arks

un

der

Pos

tem

er­

genc

e—M

iner

al

Soils

sec

tion

.

met

olac

hlor

(D

ual)

lq

t •2

%

pt

of D

ual

shou

ld

be u

sed

for

mor

e ef

fect

ive

fall

pani

cum

co

ntro

l. F

ollo

w w

ith

2,4-

D

amin

e or

Ban

vel

post

emer

genc

e fo

r co

ntro

l of

ann

ual

broa

dlea

ved

wee

ds i

f ne

eded

. A

ppli

cati

on

may

be

mad

e pr

epla

nt.

(See

rem

arks

und

er

"Nut

sedg

e co

ntro

l.")

-

See

2,4

-D a

min

e an

d B

anve

l re

mar

ks u

nder

P

oste

mer

­ge

nce—

Min

eral

So

ils s

ecti

on.

Page 15: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Ann

ual

broa

dlea

ves

only

2,

4-D

am

ine

Pos

tem

erge

nce

— M

iner

al S

oils

V

i lp

t -

For

cor

n ov

er 6

to

8 in

. us

e d

rop

nozz

les.

E

ster

for

mul

atio

ns

wil

l ca

use

mor

e cr

op i

njur

y an

d ar

e no

t re

com

men

ded.

O

il

solu

ble

amin

es

of

2,4-

D

(Dac

amin

e,

Em

ulsa

min

e)

are

avai

labl

e an

d ar

e us

ed a

t lo

wer

rat

es.

Dri

ft

cont

rol

addi

tive

s ca

n be

us

ed

wit

h so

me

2,4-

D

amin

e pr

oduc

ts

to r

educ

e da

nger

of

dr

ift.

Che

ck

the

prod

uct

labe

l.

Not

ef

fect

ive

on

smar

twee

d or

w

ild

buck

whe

at.

Hyb

rids

var

y in

to

lera

nce.

M

ost

effe

ctiv

e w

hen

wee

ds a

re s

mal

l (2

-4 i

n.)

.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

oi

cyan

azin

e (B

lade

x)

2%

lb

80W

U

SE

WE

TT

AB

LE

P

OW

DE

R

ON

LY

. A

pply

bef

ore

wee

ds a

re 1

% i

n. t

all.

A

pply

bef

ore

corn

is

4 in

. ta

ll.

Som

e te

mpo

rary

set

back

or

stun

ting

of

corn

may

occ

ur.

espe

cial

ly i

n sa

ndy

soil

. D

o no

t us

e w

ith

crop

oil

s, a

ddit

ives

, or

liq

uid

herb

icid

es

as s

ever

e cr

op i

njur

y m

ay o

ccur

.

amet

ryne

(E

vtk)

+

surf

acta

nt

1%

+ lpt

21

b + lp

t

CA

UT

ION

—K

EE

P O

FF

CO

RN

F

OL

IAG

E.

Do

not

use

befo

re c

orn

is 1

2 in

ches

tal

l.

Em

erge

ncy

use.

U

se d

rop

nozz

les

or d

irec

ted

spra

y.

linu

ron

(Lor

ox

or

Lin

ex)

+ su

rfac

tant

+ lp

t

2 lb

50W

or

2

pt4

L

+ lp

t

CA

UT

ION

—K

EE

P O

FF

CO

RN

F

OL

IAG

E.

Do

not

use

befo

re

corn

is

15

inch

es t

all.

E

mer

genc

y us

e.

Use

dir

ecte

d sp

ray.

U

se l

ower

ra

tes

on l

ight

er

soils

lo

w

in

orga

nic

mat

ter

or c

lay.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(exc

ept

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pani

-cu

m,

wit

chgr

ass

and

crab

gras

s)

atra

zine

(c

omm

erci

al p

rod

uct

)

+ cr

op o

il

conc

entr

ate

+ lqt

2%

lb

80W

or

2

qt4

L

or

2%

lb

90

% W

DG

+

lqt

Em

erge

ncy

use.

G

rass

es m

ust

be l

ess

than

IV

z in

. ta

ll.

Tim

ing

of a

ppli

cati

on i

s cr

itic

al t

o ge

t be

st r

esul

ts.

Sur

fact

ants

at

1 p

t pe

r A

may

be

used

in

plac

e of

cr

op

oil

conc

entr

ate

bu

t ar

e so

mew

hat

less

ef

fect

ive.

G

reat

er

chan

ce

for

resi

due

sinc

e tr

eatm

ent

is l

ater

in

se

ason

. D

o no

t ad

d B

anve

l or

2,4

-D a

s in

jury

m

ay o

ccur

. C

orn

inju

ry

is p

ossi

ble

duri

ng

stre

ss

cond

itio

ns

(col

d,

wet

, cl

oudy

w

eath

er)

or i

f th

e co

rn

is s

uccu

lent

fr

om

rece

nt

rain

fall

.

Ann

ual

broa

dlea

ves

(inc

ludi

ng v

elve

tleaf

, co

ckle

bur,

and

jim

son-

wee

d)

bent

azon

(B

asag

ran)

+

crop

oil

conc

entr

ate

1 + lqt

lqt +

lqt

Use

a m

inim

um o

f 40

psi

and

20

gal

/A o

f w

ater

. W

eak

on p

igw

eed,

nig

htsh

ade,

an

d la

mbs

quar

ters

. C

ontr

ols

spec

ify

broa

dlea

ves.

S

ee l

abel

. C

orn

is t

oler

ant

to B

asag

ran

at a

ll g

row

th s

tage

s.

How

­ev

er,

best

res

ults

are

obt

aine

d w

ith

earl

y ap

plic

atio

ns t

o sm

all

wee

ds.

Page 16: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

— P

oste

mer

genc

e —

Min

eral

Soi

l (C

ontin

ued)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

broa

dlea

ves

bent

azon

(B

asag

ran)

+

atra

zine

+ cr

op o

il c

once

ntra

te

%

%q

t

+ %

+ lqt

% +

%

See

Rem

arks

+ 1

qt +

1 q

t

+ 0.

91b8

0W

or

%q

t4L

or

0.

8 lb

90%

WD

G

+ lq

t

Vk

pt +

Vk

pt

+ 1

qt +

1 q

t

Giv

es b

ette

r co

ntro

l of

som

e br

oadl

eaf

wee

ds,

esp

ecia

lly

pigw

eed,

tha

n B

asag

ran

alon

e.

Com

bina

tion

re

duce

s ca

rryo

ver

from

po

stem

erge

nce

appl

icat

ion

of

atra

zine

. C

orn

inju

ry

is p

ossi

ble

duri

ng s

tres

s co

ndit

ions

(c

old,

w

et,

clou

dy w

eath

er)

or i

f th

e co

rn

is s

uccu

lent

fr

om

rece

nt

rain

fall

.

Nut

sedg

e C

anad

a th

istl

e

OS

bent

azon

(B

asag

ran)

+

crop

oil

con

cent

rate

TW

O A

PP

LIC

AT

ION

S R

EQ

UIR

ED

FO

R B

ES

T N

UT

-S

ED

GE

A

ND

C

AN

AD

A T

HIS

TL

E

CO

NT

RO

L.

• Inc

reas

e B

asag

an

rate

to

1 q

t pe

r ac

re f

or e

ach

appl

ica­

tion

for

mor

e ef

fect

ive

Can

ada

this

tle

cont

rol.

C

ontr

ols

only

spe

cifi

c br

oadl

eave

s.

Che

ck

labe

l fo

r sp

ecif

ic

rate

at

pr

oper

w

eed

grow

th

stag

e.

Tre

at

whe

n nu

tsed

ge

is 4

to

6 in

. an

d ag

ain

10

days

la

ter.

• U

se a

min

imum

of

40

psi

and

20 g

al/A

of

wat

er.

Do

not

use

floo

d no

zzle

s.

Vel

vetl

eaf,

jim

sonw

eed,

di

cam

ba

smar

twee

d, w

ild

buck

- (B

anve

l)

whe

at,

Can

ada

this

tle

%

Rem

ark

s an

d L

imit

atio

ns

lpt

— U

se p

ress

ure

less

tha

n 2

0 ps

i.

— D

o no

t ap

ply

if s

oybe

ans

in t

he v

icin

ity

are

over

10

in.

tall

or

have

beg

un t

o bl

oom

. —

Dri

ft c

ontr

ol a

gent

s m

ay b

e us

ed t

o re

duce

dri

ft

dang

er.

— V

olat

ilit

y dr

ift

is i

ncre

ased

at

tem

pera

ture

s ab

ove

85

° F

. —

Low

er r

ates

sho

uld

be u

sed

on c

oars

er s

oils

or

soil

s lo

w

in o

rgan

ic m

atte

r.

US

E F

OR

CO

RN

5 I

N.

OR

LE

SS

TA

LL

. F

OR

C

OR

N

OV

ER

5

IN.,

RE

DU

CE

R

AT

E t

o %

PT

PE

R

AC

RE

. U

SE

E

XT

RE

ME

C

AU

TIO

N.

DR

IFT

T

O

NE

AR

BY

S

EN

SIT

IVE

C

RO

PS

IS A

HA

ZA

RD

. •A

les

s vo

lati

le

form

of

B

anve

l (B

anve

l II

) is

av

aila

ble

and

shou

ld b

e us

ed i

f dr

ift

to s

ensi

tive

cro

ps i

s po

ssib

le.

Ban

vel

II

is o

ne-h

alf

the

conc

entr

atio

n of

B

anve

l. U

se

twic

e th

e am

ount

of

Ban

vel

II a

s B

anve

l fo

r eq

uiva

lent

ra

tes.

For

cor

n ov

er 6

to

8 in

. us

e dr

op n

ozzl

es.

Ann

ual

broa

dlea

ves

brom

oxyn

il

(Buc

trU

)

or

or

(ME

-4

Bro

min

al)

l%p

t

or

%p

t

App

ly t

o w

eeds

les

s th

an 4

in.

tal

l fo

r ef

fect

ive

cont

rol.

A

pply

to

com

les

s th

an

8 in

. ta

ll;

afte

r 8

in.,

use

dro

p no

zzle

s.

Use

min

imum

of

20

gal

wat

er p

er a

cre

and

30

psi.

D

o no

t m

ix w

ith

spra

y ad

diti

ves

or l

iqui

d fe

rtil

izer

s.

Bro

mox

onyl

is

wea

k on

mus

tard

s, p

igw

eed,

rag

wee

d, a

nd

velv

etle

af.

Ann

ual

gras

ses

Pre

emer

genc

e —

Org

anic

Soi

ls

prop

achl

or

(Ram

rod)

8

lb (

65

% W

P)

— M

ust

foll

ow

wit

h a

post

emer

genc

e tr

eatm

ent

for

con­

trol

of

broa

dlea

ved

wee

ds.

Page 17: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Post

emer

genc

e —

Org

anic

Soi

ls

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(exc

ept

fall

pa

nicu

m,

gree

n fo

xtai

l, gi

ant

fox­

tail,

wit

chgr

ass

and

crab

-gr

ass)

atra

zine

(c

omm

erci

al p

rodu

ct)

+ >p

oil

conc

entr

ate

3 + lqt

3%

lb8

0W

or

3

qt4

L

or

3% l

b 90

% W

DG

+

lqt

— E

mer

genc

y us

e.

— G

rass

es s

houl

d be

les

s th

an

1% i

n. t

all.

— T

imin

g of

app

lica

tion

is

crit

ical

to

get

best

res

ults

. —

Sur

fact

ants

at

1 p

t pe

r A

may

be

used

in

plac

e of

cr

op

oil

conc

entr

ate

bu

t ar

e so

mew

hat

less

ef

fect

ive.

Gre

ater

ch

ance

fo

r re

sidu

e si

nce

trea

tmen

t is

lat

er i

n se

ason

. —

Cor

n in

jury

is

pos

sibl

e du

ring

st

ress

co

ndit

ions

(c

old,

w

et,

clou

dy

wea

ther

) or

if

the

corn

is

suc

cule

nt

from

re

cent

rai

nfal

l.

Ann

ual

broa

dlea

ves

Ann

ual

gras

s am

etry

ne

(Evi

k)

+ su

rfac

tant

1%

+ lpt

2 lb

s + lp

t

CA

UT

ION

—K

EE

P O

FF

CO

RN

F

OL

IAG

E.

Do

not

use

befo

re c

orn

is 1

2 in

. ta

ll.

Em

erge

ncy

use.

U

se d

rop

nozz

les

or d

irec

ted

spra

y.

linu

ron

(Lor

ox

or

Lin

ex)

+ su

rfac

tant

\Vz + lpt

3 lb

50

W

or

3p

t4L

+

lpt

CA

UT

ION

—K

EE

P O

FF

CO

RN

F

OL

IAG

E.

Do

not

use

befo

re c

orn

is 1

5 in

. ta

ll.

Em

erge

ncy

use.

U

se d

irec

ted

spra

y.

Use

low

er

rate

s on

lig

hter

soi

ls o

r so

ils

low

in

orga

nic

mat

ter.

Ann

ual

broa

dlea

ves

2,4-

D a

min

e lp

t F

or c

orn

over

6 t

o 8

in.,

use

drop

noz

zles

. E

ster

for

mul

atio

ns

wil

l ca

use

mor

e co

rn i

njur

y an

d ar

e no

t re

com

men

ded.

O

il

solu

ble

amin

es

of

2,4-

D

(Dac

amin

e,

Em

ulsa

min

e)

are

avai

labl

e an

d ar

e us

ed a

t lo

wer

rat

es.

Dri

ft

cont

rol

addi

tive

s ca

n be

us

ed

wit

h so

me

2,4-

D

amin

e pr

oduc

ts

to r

educ

e da

nger

of

dr

ift.

Che

ck

the

prod

uct

labe

l.

• N

ot e

ffec

tive

on

sm

artw

eed

or w

ild

buck

whe

at.

Hyb

rids

var

y in

tol

eran

ce.

Vel

vetl

eaf,

jim

sonw

eed,

di

cam

ba

smar

twee

d, w

ild

buck

- (B

anve

l)

whe

at,

Can

ada

this

tle

%lb

Rem

ark

s an

d L

imit

atio

ns

lpt

— U

se p

ress

ure

less

tha

n 20

psi

. —

Do

not

appl

y if

soy

bean

s in

th

e vi

cini

ty a

re o

ver

10 i

n.

tall

or

have

beg

un t

o bl

oom

. —

Dri

ft c

ontr

ol a

gent

s m

ay b

e us

ed t

o re

duce

dri

ft

dang

er.

— V

olat

ilit

y dr

ift

is i

ncre

ased

at

tem

pera

ture

s ab

ove

85

° F

. —

Low

er r

ates

sho

uld

be u

sed

on c

oars

er s

oils

or

soil

s lo

w

in o

rgan

ic

mat

ter.

- USE FOR CORN 5 IN. OR LESS TALL. FOR CORN

OVER 5 IN., REDUCE RATE TO % PT PER ACRE.

- USE EXTREME CAUTION.

-DR

IFT

T

O

NE

AR

BY

S

EN

SIT

IVE

C

RO

PS

IS

A

HA

ZA

RD

. -

A l

ess

vola

tile

fo

rm

of

Ban

vel

(Ban

vel

II)

is

avai

labl

e an

d sh

ould

be

used

if

drif

t to

sen

siti

ve c

rops

is

poss

ible

. B

anve

l II

is

one

-hal

f th

e co

ncen

trat

ion

of B

anve

l. U

se

twic

e th

e am

ount

of

Ban

vel

II a

s B

rnve

l fo

r eq

uiva

lent

ra

tes.

-

For

cor

n ov

er 6

to

8 in

., us

e dr

op n

ozzl

es.

Page 18: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

— P

oste

mer

genc

e —

Org

anic

Soi

l (C

onti

nued

)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

F

orm

ula

tion

/A

Rem

ark

s an

d L

imit

atio

ns

Nut

sedg

e C

anad

a th

istl

e be

ntaz

on

(Bas

agra

n)

+ cr

op o

il co

ncen

trat

e

% +

%

See

Rem

arks

+ 1

qt +

1 q

t

1% p

t +

V

k pt

+ 1

qt +

1 q

t

TW

O A

PP

LIC

AT

ION

S R

EQ

UIR

ED

FO

R B

ES

T N

UT

-S

ED

GE

AN

D C

AN

AD

A T

HIS

TL

E

CO

NT

RO

L.

Incr

ease

rat

e to

1

qt

per

acre

for

ea

ch

appl

icat

ion

for

mor

e ef

fect

ive

Can

ada

this

tle

cont

rol.

Con

trol

s on

ly s

peci

fic

broa

dlea

ves.

- C

heck

lab

el f

or s

peci

fic

rate

at

prop

er w

eed

grow

th s

tage

. T

reat

w

hen

nuts

edge

is

4 t

o 6

in.

and

agai

n 10

da

ys

late

r.

• U

se a

min

imum

of

40

psi

and

20 g

al/A

of

wat

er.

Do

not

use

floo

d no

zzle

s.

Ann

ual

broa

dlea

ves

(inc

ludi

ng

velv

etle

af,

cock

lebu

r,

and

jim

son-

wee

d)

bent

azon

(B

asag

ran)

+

crop

oil

conc

entr

ate

+ Iqt

Iqt +

Iqt

Use

a m

inim

um o

f 40

psi

and

20

gal

/A o

f w

ater

. W

eak

on p

igw

eed,

nig

htsh

ade,

and

la

mbs

quar

ters

. C

ontr

ols

spec

ific

bro

adle

aves

. S

ee l

abel

. C

orn

is t

oler

ant

to B

asag

ran

at a

ll gr

owth

sta

ges.

H

ow­

ever

, be

st r

esul

ts a

re o

btai

ned

wit

h ea

rly

appl

icat

ions

to

smal

l w

eeds

.

Ann

ual

broa

dlea

ves

00

Ann

ual

broa

dlea

ves

bent

azon

(B

asag

ran)

+

atra

zine

+ cr

op o

il c

once

ntra

te

+ %

+ Iqt

%q

t + 0.

9 lb

80W

or

%

qt4

L

or

0.8

lb 9

0%

WD

G

+ Iq

t

Giv

es b

ette

r co

ntro

l of

som

e br

oadl

eaf

wee

ds,

espe

cial

ly

pigw

eed,

tha

n B

asag

ran

alon

e.

Com

bina

tion

red

uces

car

ryov

er f

rom

pos

tem

erge

nce

ap­

plic

atio

n of

atr

azin

e.

Cor

n in

jury

is

pos

sibl

e du

ring

st

ress

con

diti

ons

(col

d,

wet

, cl

oudy

w

eath

er)

or i

f th

e co

rn

is s

uccu

lent

fr

om

rece

nt

rain

fall

.

brom

oxyn

il

(Buc

tril

)

or

or

(ME

-4

Bro

min

al)

l^p

t

or

%

pt

App

ly t

o w

eeds

les

s th

an 4

in.

tal

l fo

r ef

fect

ive

cont

rol.

A

pply

to

corn

les

s th

an 8

in.

tal

l; a

fter

8

in.,

use

dro

p no

zzle

s.

• U

se m

inim

um o

f 20

gal

wat

er p

er a

cre

and

30

psi.

D

o no

t m

ix w

ith

spra

y ad

diti

ves

or l

iqui

d fe

rtil

izer

s.

Bro

mox

onyl

is

wea

k on

mus

tard

s, p

igw

eed,

rag

wee

d, a

nd

velv

etle

af.

Qua

ckgr

ass

atra

zine

(c

omm

erci

al p

rodu

ct)

Qua

ckgr

ass

5 lb

80W

or

4

qt4

L

or

4% l

b 9

0%

WD

G

Whe

n st

and

of q

uack

gras

s is

hea

vy,

appl

y in

fal

l. O

ther

­w

ise

appl

y in

spr

ing

befo

re

plow

ing

wh

en

quac

kgra

ss

is 4

to

8 in

. ta

ll.

Wai

t at

lea

st

10 d

ays

to p

low

. S

plit

app

lica

tion

; ap

ply

2 lb

per

acr

e pr

eplo

w a

nd 2

lb

per

acr

e pr

eem

erge

nce

to g

ive

cont

rol

of a

nnua

l w

eeds

al

so.

Wh

en a

tot

al o

f 4

lb o

f at

razi

ne i

s us

ed,

carr

yove

r m

ay

pers

ist

2 to

3 y

ears

.

Page 19: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

co

Nut

sedg

e

atra

zine

(c

omm

erci

al p

rodu

ct)

+ E

PT

C w

ith p

rote

ctan

t (E

radi

cane

) at

razi

ne

(com

mer

cial

pr

oduc

t)

+ cr

op o

il co

ncen

trat

e

1 + 6 2 + lqt

1% l

b 80

W

or

lqt4

L

or

1.1

lb 9

0% W

DG

+

3%

qt

2% l

b 80

W

or

2q

t4L

or

2%

lb

90%

WD

G

+ lq

t

Inco

rpor

ate

to a

dep

th

of 4

to

5 in

. im

med

iate

ly

afte

r ap

plic

atio

n w

ith

a di

sk,

2 ti

mes

in

oppo

site

di

rect

ions

. Q

uack

gras

s co

ntro

l w

ith

min

imum

soi

l re

sidu

e or

car

ry­

over

. E

radi

cane

E

xtra

is

al

so

avai

labl

e an

d sh

ould

be

us

ed

at t

he r

ate

of 4

qt

per

acre

.

— P

oste

mer

genc

e.

App

ly w

hen

quac

kgra

ss i

s 2

to 4

in.

tal

l.

— A

se

cond

ap

plic

atio

n m

ay

be

need

ed

2-3

wee

ks

late

r fo

r m

ore

com

plet

e co

ntro

l. —

Inc

reas

e ra

te

to

3 lb

pe

r ac

re

acti

ve

ingr

edie

nt

for

heav

y in

fest

atio

ns.

— W

hen

a t

otal

of

4 lb

of

atra

zine

is

used

, ca

rryo

ver

may

pe

rsis

t 2

to 3

yea

rs.

— C

orn

inju

ry

is p

ossi

ble

du

rin

g st

ress

co

ndit

ions

(c

old,

w

et,

clou

dy w

eath

er)

or i

f th

e co

rn

is s

uccu

lent

fr

om

rece

nt r

ainf

all.

glyp

hosa

te

(Rou

ndup

) 1%

2

qt

Bef

ore

plan

ting

in

the

spri

ng o

r as

a f

all

trea

tmen

t.

App

ly t

o ac

tive

ly g

row

ing

quac

kgra

ss a

t le

ast

8 in

. ta

ll.

Use

15

to 2

0 ga

l w

ater

per

acr

e.

No

soil

res

idue

. C

an p

low

or

till

3 d

ays

afte

r ap

plic

atio

n an

d pl

ant

crop

. D

o no

t pl

ow o

r ti

ll p

rior

to

trea

tmen

t.

• R

ound

up

rate

of

1

qt

may

b

e us

ed

for

sing

le

seas

on

quac

kgra

ss

cont

rol.

App

ly

1 q

t in

5-

10

gal

wat

er

per

ac

re w

ith

0.5

%

noni

onic

sur

fact

ant.

T

his

trea

tmen

t is

le

ss e

ffec

tive

on

an

undi

stur

bed

quac

kgra

ss

sod.

buty

late

5

(Sut

an

Plu

s or

Gen

ate

Plu

s)

Nut

sedg

e 3

qt

Pre

plan

t in

corp

orat

ed t

o a

dep

th o

f 2

to 3

in.

C

ontr

ol o

f an

nual

gra

sses

. C

ombi

ne o

r fo

llow

wit

h an

othe

r he

rbic

ide

(see

Pre

plan

t-M

iner

al S

oil

and

Pos

tem

erge

nce

Min

eral

Soi

l S

ecti

ons)

fo

r ad

diti

onal

bro

adle

af

wee

d co

ntro

l.

alac

hlor

(L

asso

) 3

qt

Pre

plan

t in

corp

orat

ed t

o a

dep

th

of 2

to

3 in

. fo

r co

n­si

sten

t nu

tsed

ge

cont

rol.

Con

trol

of

annu

al g

rass

es.

Com

bine

or

foll

ow w

ith

anot

her

herb

icid

e (s

ee P

repl

ant-

Min

eral

So

il an

d P

oste

mer

genc

e-M

iner

al

Soil

sect

ions

) fo

r ad

diti

onal

bro

adle

af

wee

d co

ntro

l.

met

olac

hlor

(D

ual)

2%

V

A

qt

Pre

plan

t in

corp

orat

ed

to a

dep

th

of 2

to

3 in

. fo

r co

n­si

sten

t nu

tsed

ge

cont

rol.

Con

trol

of

annu

al g

rass

es.

Fol

low

wit

h 2,

4-D

am

ine

or B

anve

l (s

ee P

oste

mer

genc

e-M

iner

al

Soil

sect

ion)

fo

r ad

diti

onal

br

oadl

eaf

wee

d co

ntro

l.

Page 20: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

(C

ontin

ued)

Wee

d C

ontr

olle

d H

erbi

cide

R

ate

lb/A

a.i.

F

orm

ula

tion

/A

Rem

arks

and

Lim

itat

ions

bent

azon

(B

asag

ran)

+

crop

oil

conc

entr

ate

% +

%

1%

pt

+ 1

% p

t —

Pos

tem

erge

nce

appl

icat

ion.

Tw

o ap

plic

atio

ns r

equi

red

for

best

nut

sedg

e co

ntro

l. +

+

Con

trol

s so

me

broa

dlea

ves

also

. C

heck

lab

el.

1 qt

+ 1

qt

1 qt

+ 1

qt

— T

reat

whe

n nu

tsed

ge i

s 4

to 6

in.

tall

and

agai

n 10

day

s la

ter.

Use

a m

inim

um o

f 40

psi

and

20

gal/

A o

f w

ater

. D

o no

t us

e fl

ood

nozz

les.

at

razi

ne

(com

mer

cial

pro

duct

)

+ cr

op o

il co

ncen

trat

e

2 +

2

+ 1 qt

+ 1

qt

2%80

W

or

2q

t4L

or

2%

lb

90%

WD

G

+ lq

t

— A

pply

2 l

b of

atr

azin

e pe

r ac

re w

hen

nuts

edge

is

2 in

. ta

ll, a

nd a

pply

2 l

b at

razi

ne 2

wee

ks l

ater

. O

n m

uck

soils

, app

ly 2

lb

of a

traz

ine

per

acre

whe

n th

e nu

tsed

ge

is 2

in.

tal

l, th

en a

pply

1 lb

of

atra

zine

per

acr

e 1

and

2 w

eeks

fol

low

ing

the

initi

al t

reat

men

t. —

Sur

fact

ants

at

1 pt

per

acr

e m

ay b

e us

ed i

n pl

ace

of

crop

oil

conc

entr

ate

but

are

som

ewha

t le

ss e

ffec

tive.

Cor

n in

jury

is

poss

ible

dur

ing

stre

ss c

ondi

tions

(c

old,

w

et,

clou

dy w

eath

er)

or i

f th

e co

rn i

s su

ccul

ent

from

re

cent

rai

nfal

l. —

Hig

h at

razi

ne c

arry

over

on

min

eral

soi

ls.

%

dica

mba

(B

anve

l)

+ 2,

4-D

est

er

+ 1

Hem

p D

ogba

ne

%

pt

+ 1

qt

— P

reha

rves

t tr

eatm

ent.

App

ly

afte

r co

rn

has

reac

hed

the

brow

n si

lk s

tage

(R

4) a

nd a

ll so

ybea

ns i

n th

e vi

­ci

nity

are

ful

ly p

odde

d w

ith l

eave

s tu

rnin

g ye

llow

(R

7).

— D

o no

t ap

ply

befo

re S

epte

mbe

r 1.

USE

E

XT

RE

ME

C

AU

TIO

N.

DR

IFT

T

O

NE

AR

BY

C

RO

PS I

S A

HA

ZA

RD

. —

Do

not

harv

est

for

7 da

ys a

fter

ap

plic

atio

n.

— D

o no

t gr

aze

or f

eed

fodd

er f

rom

tre

ated

are

as f

or 3

5 da

ys a

fter

ap

plic

atio

n.

— T

his

trea

tmen

t is

mos

t ef

fect

ive

whe

n he

mp

dogb

ane

is g

reen

and

the

und

ergr

ound

rh

izom

es h

ave

swol

len

pink

bud

s.

— M

ay r

equi

re t

wo

year

s fo

r co

mpl

ete

cont

rol.

— T

reat

men

t m

ay b

e m

ade

by g

roun

d or

aer

ial

appl

icat

ion.

Page 21: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

No

-Till

A

lfal

fa S

od

(Pre

dom

inan

tly

alfa

lfa

with

br

oadl

eaf

wee

ds

and

som

e gr

asse

s su

ch a

s tim

othy

, br

omeg

rass

an

d an

nual

w

eeds

)

falfa

sod

in

ual

broa

dlea

ves

mua

l gr

asse

s (e

xcep

t gr

een

foxt

ail,

gian

t fo

xtai

l, fa

ll pa

ni-

cum

, w

itchg

rass

, er

ab-

gras

s, a

nd s

andb

ur)

2,4-

D e

ster

FO

LL

OW

ED

BY

: at

razi

ne

(com

mer

cial

pro

duct

)

+ pa

raqu

at

(Par

aqua

t, G

ram

oxon

e)

or

glyp

hosa

te

(Rou

ndup

)

1%

2 + %

or

1%

to

l%q

t

2% l

b 80

W

or

2q

t4L

or

2%

lb

90%

WD

G

+ lq

t or

l%q

t

— A

pply

2,4

-D 7

-10

days

bef

ore

plan

ting

. —

Alfa

lfa s

houl

d be

at

leas

t 4

in.

tall

at t

reat

men

t tim

e.

— A

pply

atr

azin

e an

d pa

raqu

at

or R

ound

up

at p

lant

ing

time.

Use

Vz

pt X

77 o

r si

mila

r no

n-io

nic

surf

acta

nt p

er 1

00

gal

of s

pray

whe

n us

ing

para

quat

. D

oubl

e su

rfac

tant

ra

te w

hen

usin

g liq

uid

N o

r liq

uid

fert

ilize

r.

— U

se 2

0-60

gal

spr

ay/a

cre

wit

h pa

raqu

at a

nd 2

0-30

gal

sp

ray/

acre

with

R

ound

up.

— P

araq

uat

prov

ides

qui

cker

bu

rndo

wn.

R

ound

up

may

pr

ovid

e be

tter

con

trol

if s

od g

row

th i

s de

nse.

Pos

tem

erge

nce

Ban

vel

or 2

,4-D

(s

ee s

ectio

ns

abov

e)

may

be

need

ed t

o co

ntro

l al

falfa

es

cape

s.

— D

o no

t us

e pa

raqu

at w

ith s

uspe

nsio

n or

hig

h ph

osph

ate

carr

iers

. —

Fol

low

mix

ing

dire

ctio

ns f

or p

araq

uat

or

Rou

ndup

. —

In

a m

ixed

alf

alfa

-qua

ckgr

ass

sod,

an

addi

tiona

l 2

lb

per

acre

of

atra

zine

may

be

appl

ied

at p

lant

ing

time,

or

with

1 q

t pe

r ac

re o

f cr

op o

il co

ncen

trat

e w

ith t

he

2,4-

D e

ster

or

late

r as

a p

oste

mer

genc

e tr

eatm

ent.

— Q

uack

gras

s is

usu

ally

not

at

the

prop

er s

tage

of

grow

th

(8 i

n. t

all)

for

max

imum

eff

ectiv

enes

s fr

om

Rou

ndup

tr

eatm

ent

at c

orn

plan

ting.

(S

ee "

Qua

ckgr

ass"

sec

tion

for

note

s on

Rou

ndup

use

.)

Gra

ss S

od

(Pre

dom

inan

t sp

ecie

s bl

uegr

ass,

tim

othy

, or

char

dgra

ss,

brom

egra

ss,

or t

all

fesc

ue,

Not

qu

ackg

rass

)

Cra

ss s

od

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(exc

ept

gree

n fo

xtai

l, gi

ant

foxt

ail,

fall

pani

-cu

m,

witc

hgra

ss,

crab

-gr

ass,

and

san

dbur

)

atra

zine

(c

omm

erci

al p

rodu

ct)

+ pa

raqu

at

(Par

aqua

t, G

ram

oxon

e)

or

glyp

hosa

te

(Rou

ndup

)

3 + %

or

1%

3% l

b 80

W

—A

pply

at

plan

ting

tim

e.

or

— U

se %

pt

X77

or

sim

ilar

non-

ioni

c su

rfac

tant

per

10

0 3

qt 4

L

gal

of s

pray

whe

n us

ing

para

quat

. D

oubl

e su

rfac

tant

or

ra

te w

hen

liqui

d N

or

liqu

id f

ertil

izer

. 3%

lb

90%

WD

G

— U

se 2

0-60

gal

spr

ay/a

cre

with

par

aqua

t an

d 20

-30

gal

+

spra

y/ac

re w

ith

Rou

ndup

. 1

qt

— P

araq

uat

prov

ides

qui

cker

hu

rndo

wn.

R

ound

up

may

pr

ovid

e be

tter

con

trol

if

sod

grow

th i

s de

nse.

or

Do

not

use

para

quat

with

sus

pens

ion

or h

igh

phos

phat

e V

A q

t ca

rrie

rs.

— F

ollo

w m

ixin

g di

rect

ions

for

par

aqua

t or

Rou

ndup

.

Page 22: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

(C

ontin

ued)

Wee

d C

ontr

olle

d H

erbi

cide

R

ate

lb/A

a.

i. F

orm

ulat

ion/

A

Rem

arks

and

Lim

itat

ions

Qua

ckgr

ass

Sod

Q

uack

gras

s A

nnua

l br

oadl

eave

s A

nnua

l gr

asse

s (e

xcep

t gr

een

foxt

ail,

gian

t fo

xtai

l, fa

ll pa

ni-

cum

, w

itehg

rass

, cr

ab-

gras

s, a

nd

sand

bur)

to

atra

zine

(c

omm

erci

al p

rodu

ct)

+ cr

op o

il co

ncen

trat

e

FO

LL

OW

ED

BY

: at

razi

ne

2 + lqt

2

2% l

b 80

W

or

2q

t4L

or

2

%lb

90

%W

DG

+ lq

t

2% l

b 80

W

+ +

para

quat

%

(P

araq

uat,

Gra

mox

one)

or

or

gl

ypho

sate

1%

(R

ound

up)

or

2q

t4L

or

2

%lb

90

%W

DG

+

lqt or

l%

qt

•App

ly

atra

zine

pl

us

crop

oi

l w

hen

quac

kgra

ss

has

star

ted

grow

th

in

spri

ng,

7-10

day

s be

fore

pl

anti

ng.

Mak

e se

cond

app

licat

ion

at p

lant

ing.

-H

igh

rate

of

atra

zine

(4

lb

ai/A

) w

ill p

rovi

de s

ome

addi

tiona

l an

nual

gra

ss c

ontr

ol.

• Q

uack

gras

s is

usu

ally

not

at

the

prop

er s

tage

of

grow

th

(8 i

n. t

all)

for

max

imum

eff

ectiv

enes

s fr

om

Rou

ndup

tr

eatm

ent

at c

orn

plan

ting

. (S

ee "

Qua

ckgr

ass"

sec

tion

for

note

s on

Rou

ndup

use

.)

Whe

n 4

Tb o

f at

razi

ne a

re u

sed,

car

ryov

er m

ay p

ersi

st

2 to

3 y

ears

. Se

e no

tes

abov

e fo

r pa

raqu

at o

r R

ound

up

use.

2,

4-D

est

er

(1 l

b ai

/A o

r 1

qt/A

) m

ay b

e ad

ded

to

initi

al a

pplic

atio

n of

atr

azin

e pl

us c

rop

oil

conc

entr

ate

for

pere

nnia

l br

oadl

eaf

wee

d su

ppre

ssio

n.

atra

zine

(c

omm

erci

al p

rodu

ct)

+ pa

raqu

at

(Par

aqua

t, G

ram

oxon

e)

or

glyp

hosa

te

(Rou

ndup

)

+ or

1%

5 lb

80W

or

4

qt4

L

or

4% l

b 90

% D

WG

lqt or

l%

qt

App

ly a

t pl

anti

ng t

ime.

A

traz

ine

carr

yove

r m

ay p

ersi

st 2

to

3 ye

ars.

Se

e no

tes

abov

e fo

r pa

raqu

at a

nd R

ound

up u

se.

Page 23: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Gra

in S

tubb

le o

r Ro

w C

rop

Res

idue

(W

ith

rye

or w

heat

co

ver

crop

)

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

atra

zine

(c

omm

erci

al p

rodu

ct)

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

para

quat

(P

araq

uat,

Gra

mox

one)

or

gl

ypho

sate

(R

ound

up)

1%

+ 2%

or

2 + Vz

or

1%

2 lb

80W

or

iy

2q

t4L

or

1%

lb

90%

WD

G

+ 2%

qt

or

Iqt +

Iqt or

l%

qt

— A

pplie

d pr

eem

erge

nce.

Par

aqua

t ap

plie

d to

rye

bef

ore

join

ting

(24-

36"

tall

) m

ay n

ot p

rovi

de c

ompl

ete

rye

cont

rol.

— U

se 3

qt

Las

so fo

r he

avy

gras

s (e

spec

ially

fal

l pa

nicu

m

or c

rabg

rass

) in

fest

atio

ns.

— B

lade

x m

ay b

e in

clud

ed f

or m

ore

effe

ctiv

e fa

ll pa

nicu

m

cont

rol.

(See

re

mar

ks

for

four

-way

ta

nk

mix

es,

pg.

24).

See

not

es a

bove

for

par

aqua

t or

Rou

ndup

use

. —

Fol

low

par

aqua

t or

Rou

ndup

mix

ing

dire

ctio

ns.

— P

repa

ckag

ed m

ixes

of

atra

zine

+

Las

so o

r R

ound

up

+

Las

so (

Bro

nco)

are

ava

ilabl

e.

— A

pre

pack

aged

mix

of

atra

zine

+

Dua

l (B

leep

) is

ava

il­ab

le.

— M

axim

um D

ual r

ate

in ta

nk m

ixes

is 2

% p

t on

fine s

oils

.

Eg

cyan

azm

e 2

(Bla

dex)

alac

hlor

2%

(L

asso

)

+ +

para

quat

%

(P

araq

uat,

Gra

mox

one)

or

or

gl

ypho

sate

1%

(R

ound

up)

2% l

b 80

W

or

2q

t4L

2%

qt

+ Iq

t or

l%q

t

App

lied

pree

mer

genc

e.

Par

aqua

t ap

plie

d to

rye

bef

ore

join

ting

(24-

36"

tall

) m

ay n

ot p

rovi

de c

ompl

ete

cont

rol.

Use

3 q

t L

asso

for

heav

y gr

ass

(esp

ecia

lly f

all

pani

cum

or

cra

bgra

ss)

infe

stat

ions

. N

o ca

rryo

ver.

Se

e no

tes

abov

e fo

r pa

raqu

at o

r R

ound

up u

se.

Follo

w p

araq

uat

or R

ound

up l

abel

mix

ing

dire

ctio

ns.

A p

repa

ckag

ed m

ix o

f L

asso

•+-

Rou

ndup

(B

ronc

o) i

s av

aila

ble.

cyan

azm

e 2

(Bla

dex)

+ +

met

olac

hlor

2

(Dua

l)

+ +

para

quat

%

(P

araq

uat,

Gra

mox

one)

or

or

gl

ypho

sate

1%

(R

ound

up)

2% l

b 80

W

or

2q

t4L

+

Iqt +

Iqt or

1%

qt

App

lied

pree

mer

genc

e.

Par

aqua

t ap

plie

d to

rye

bef

ore

join

ting

(24-

36"

tall

) m

ay n

ot p

rovi

de c

ompl

ete

cont

rol.

Max

imum

Dua

l ra

te i

n B

lade

x co

mbi

natio

ns i

s 2¥

t pt

on

fin

e te

xtur

ed s

oils

with

ove

r 4%

org

anic

mat

ter.

N

o ca

rryo

ver.

Se

e no

tes

abov

e fo

r pa

raqu

at o

r R

ound

up u

se.

Follo

w p

araq

uat

or R

ound

up m

ixin

g di

rect

ions

.

Page 24: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

— G

rain

Stu

bble

(C

ontin

ued)

Wee

d C

ontr

olle

d H

erbi

cide

R

ate

lb/A

a.i.

F

orm

ula

tion

/A

Rem

arks

and

Lim

itat

ions

K

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

atra

zine

(c

omm

erci

al p

rodu

ct)

+ cy

anaz

ine

(Bla

dex)

+ al

achl

or

(Las

so)

+ pa

raqu

at

(Par

aqua

t, G

ram

oxan

e)

or

glyp

hosa

te

(Rou

ndup

)

atra

zine

(c

omm

erci

al p

rodu

ct)

+ cy

anaz

ine

(Bla

dex)

+ m

etol

achl

or

(Dua

l)

+ pa

raqu

at

(Par

aqua

t, G

ram

oxon

e)

or

glyp

hosa

te

(Rou

ndup

)

%

+ 1%

+ 2%

+ %

or

1%

%

+ 1%

+ 2 + %

or

1%

1 lb

80W

or

%

qt4

L

or

4/5I

b 90

% W

DG

+

2 lb

80W

or

l%

qt4

L

+ 2

%q

t

-f

lqt or

l%

qt

1 lb

80W

or

%

qt4

L

or

% l

b 90

% W

DG

+

21b8

0W

or

Vk

qt 4

L

+ iq

t + lqt or

l%

qt

App

lied

pree

mer

genc

e.

•Red

uces

pot

entia

l at

razi

ne c

arry

over

. •P

araq

uat

appl

ied

to r

ye b

efor

e jo

intin

g (2

4-36

" ta

ll)

may

not

pro

vide

com

plet

e co

ntro

l. •

May

sub

stit

ute

Pri

ncep

for

atr

azin

e if

fall

pani

cum

is

a se

vere

pro

blem

. •

See

note

s ab

ove

for

para

quat

or

Rou

ndup

use

. •

Follo

w p

araq

uat

or R

ound

up m

ixin

g di

rect

ions

. •

Prep

acka

ged

mix

es o

f at

razi

ne +

L

asso

or

Rou

ndup

4-

Las

so (

Bro

nco)

are

ava

ilabl

e.

— A

pplie

d pr

eem

erge

nce.

Red

uces

pot

enti

al a

traz

ine

carr

yove

r.

— P

araq

uat

appl

ied

to r

ye b

efor

e jo

intin

g (2

4-36

" ta

ll)

may

not

pro

vide

com

plet

e co

ntro

l. —

May

sub

stitu

te P

rinc

ep fo

r at

razi

ne i

f fa

ll pa

nicu

m i

s a

seve

re p

robl

em.

— S

ee n

otes

abo

ve f

or p

araq

uat

or R

ound

up u

se.

— F

ollo

w p

araq

uat

or R

ound

up m

ixin

g di

rect

ions

. —

A p

repa

ckag

ed m

ix o

f at

razi

ne -

f D

ual

(Bic

ep)

is a

vail­

able

.

Page 25: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Gra

in S

tubb

le o

r R

ow C

rop

Res

idue

Ani

mal

bro

adle

aves

A

nnua

l gr

asse

s

&

(Wit

hout

a

cove

r cr

op)

atra

zine

1%

(c

omm

erci

al p

rodu

ct)

alac

hlor

2

^ (L

asso

) or

or

m

etol

achl

or

2 (D

ual)

-|_

_

j-

para

quat

%

(P

araq

uat,

Gra

mox

one)

or

or

gl

ypho

sate

1%

(R

ound

up)

cyan

azin

e 2

(Bla

dex)

T

-f"

alac

hlor

2%

(L

asso

) 4-

4-

para

quat

V

z (P

araq

uat,

Gra

mox

one)

or

or

gl

ypho

sate

1%

(R

ound

up)

2 lb

80W

or

1%

qt

4L

or

l%lb

90

%W

DG

+

2% q

t

or

Iqt +

Iqt or

l%

qt

App

lied

pre

emer

genc

e.

• U

se 3

qt

Las

so f

or h

eavy

gra

ss (

espe

cial

ly f

all

pani

cum

or

cra

bgra

ss)

infe

stat

ions

. •

Bla

dex

may

be

incl

uded

for

mor

e ef

fect

ive

fall

pani

cum

co

ntro

l. (S

ee

rem

arks

fo

r fo

ur-w

ay

tank

m

ixes

, pg

. 26

).

• Se

e no

tes

abov

e fo

r pa

raqu

at o

r R

ound

up

use.

Follo

w p

araq

uat

or R

ound

up

mix

ing

dire

ctio

ns.

• P

repa

ckag

ed m

ixes

of

atra

zine

+

Las

so o

r R

ound

up

+

Las

so (

Bro

nco)

are

ava

ilab

le.

• A

pre

pack

aged

mix

of

atra

zine

-f

Dua

l (B

icep

) is

ava

il­

able

. -

Max

imum

Dua

l rat

e in

tan

k m

ixes

is 2

% p

t on

fine

soi

ls.

• W

here

no

cove

r cr

op i

s pr

esen

t an

d an

nual

wee

ds a

re

smal

l, th

e ra

te o

f pa

raqu

at

may

be

redu

ced

to

1 pt

pe

r ac

re o

r th

e ra

te o

f R

ound

up

may

be

redu

ced

to

1 qt

per

acr

e.

(See

Lab

el.)

2% l

b 80

W

or

2q

t4L

+

2%

qt

+ Iq

t or

l%q

t

App

lied

pre

emer

genc

e.

Use

3 q

t L

asso

for

hea

vy g

rass

(es

peci

ally

fal

l pa

nicu

m

or c

rabg

rass

) in

fest

atio

ns.

No

carr

yove

r.

See

note

s ab

ove

for

para

quat

or

Rou

ndup

use

. Fo

llow

par

aqua

t or

Rou

ndup

lab

el m

ixin

g di

rect

ions

. A

pre

pack

aged

m

ix o

f L

asso

+

Rou

ndup

(B

ronc

o) i

s av

aila

ble.

W

here

no

cove

r cr

op i

s pr

esen

t an

d an

nual

wee

ds a

re

smal

l, th

e ra

te o

f pa

raqu

at

may

be

redu

ced

to

1 pt

pe

r ac

re o

r th

e ra

te o

f R

ound

up

may

be

redu

ced

to

1 qt

per

acr

e.

(See

Lab

el.)

cyan

azin

e 2

(Bla

dex)

+ +

met

olac

hlor

2

(Dua

l)

para

quat

%

(P

araq

uat,

Gra

mox

one)

or

or

gl

ypho

sate

1%

(R

ound

up)

2% l

b 80

W

or

2q

t4L

+

Iqt +

Iqt or

l%

qt

— A

pplie

d pr

eem

erge

nce.

Max

imum

Dua

l ra

te i

n B

lade

x co

mbi

natio

ns r

ate

is 2

%

pt o

n fin

e te

xtur

ed s

oils

wit

h ov

er 4

% o

rgan

ic m

atte

r.

— N

o ca

rryo

ver.

See

not

es a

bove

for

par

aqua

t or

Rou

ndup

us

e.

— F

ollo

w p

araq

uat

or R

ound

up m

ixin

g di

rect

ions

. —

Whe

re n

o co

ver

crop

is

pres

ent

and

annu

al w

eeds

are

sm

all,

the

rate

of

para

quat

may

be

redu

ced

to 1

pt

per

acre

or

the

rate

of

Rou

ndup

m

ay b

e re

duce

d to

1 q

t pe

r ac

re.

(See

Lab

el.)

Page 26: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

CO

RN

— G

rain

Stu

bble

(C

ontin

ued)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

to

atra

zine

(c

omm

erci

al

pro

du

ct)

+ cy

anaz

ine

(Bla

dex)

+ al

achl

or

(Las

so)

+ p

araq

uat

(P

araq

uat,

Gra

mox

one)

or

gl

ypho

sate

(R

ound

up)

%

+ 1%

-f

2%

+ or

1%

atra

zine

(c

omm

erci

al p

rod

uct

)

+ +

cyan

azin

e 1%

(B

lade

x)

+ +

met

olac

hlor

2

(Dua

l)

+ +

par

aqu

at

%

(Par

aqua

t, G

ram

oxon

e)

or

or

glyp

hosa

te

1%

(Roi

/ndi

/p)

cyan

azin

e (B

lade

x)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

surf

acta

nt

2.2 + 2%

or

2 +

1 lb

80

W

or

% q

t 4

L

or

% b

l 9

0%

WD

G

+ 2

lb 8

0W

or

l^

qt4

L

+ 2

%q

t

+ lq

t or

l%q

t

App

lied

pr

eem

erge

nce.

R

educ

es

pote

ntia

l at

razi

ne

carr

yove

r.

May

sub

stit

ute

Pri

ncep

fo

r at

razi

ne i

f fa

ll p

anic

um i

s a

seve

re

prob

lem

. S

ee n

otes

abo

ve f

or p

araq

uat

or

Rou

ndup

us

e.

Fol

low

p

araq

uat

or

Rou

ndup

m

ixin

g di

rect

ions

. P

rep

ack

aged

m

ixes

of

atra

zine

4-

Las

so

or R

ound

up

+

Las

so

(Bro

nco)

ar

e av

aila

ble.

W

her

e no

cov

er c

rop

is p

rese

nt

and

annu

al w

eeds

ar

e sm

all,

the

rate

of

par

aqu

at m

ay b

e re

duce

d to

1 p

t pe

r ac

re o

r th

e ra

te

of

Rou

ndup

m

ay

be

redu

ced

to

1 q

t pe

r ac

re.

(See

L

abel

.)

1 lb

80

W

or

%q

t4L

or

%

lb

90

% W

DG

+ 2

lb 8

0W

or

l%

qt4

L

+ lq

t +

lqt or

l%

qt

App

lied

pr

eem

erge

nce.

R

educ

es

pote

ntia

l at

razi

ne

carr

yove

r.

- M

ay s

ubst

itut

e P

rtnc

ep

for

atra

zine

if

tall

pan

icum

is

a se

vere

pr

oble

m.

- S

ee n

otes

abo

ve f

or p

araq

uat

or

Rou

ndup

us

e.

• F

ollo

w p

araq

uat

or

Rou

ndup

m

ixin

g di

rect

ions

. •

A p

rep

ack

aged

mix

of

atra

zine

+

Dua

l (B

leep

) is

ava

il­

able

. W

her

e no

co

ver

crop

is

pres

ent

and

annu

al w

eeds

ar

e sm

all,

the

rate

of

par

aqu

at m

ay b

e re

duce

d to

1 p

t pe

r ac

re o

r th

e ra

te

of

Rou

ndup

m

ay

be

redu

ced

to

1 q

t pe

r ac

re.

(See

Lab

el.)

2.2

qt

4L

+ 2

%

qt

or

lqt +

App

lied

'pr

eem

erge

nce.

U

se B

lade

x 4

L o

nly.

F

or s

mal

l an

nual

wee

ds n

o m

ore

than

3

in.

in

heig

ht.

Bla

dex

4L

rat

e m

ust

be r

educ

ed

on s

andy

soi

ls o

r so

ils

wit

h le

ss t

han

3%

or

gani

c m

atte

r to

avo

id

inju

ry.

Use

a

min

imum

of

25

gal

of

spra

y/a

cre.

28

%

liqu

id

nitr

ogen

us

ed

as t

he h

erbi

cide

ca

rrie

r w

ill

add

to t

he e

ffec

tive

ness

of

the

tre

atm

ent

for

burn

dow

n.

Page 27: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

WEE

D CO

NTRO

L GU

IDE

FOR

SOYB

EANS

Pre

plan

t

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

Nu

tsed

ge

met

ribu

zin

(Lex

one

or S

enco

r)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

+ 2 or

2

% l

b 5

0W

or

%

pt4

L

or

% l

b 7

5%

DF

+ 2

qt or

2

pt

Som

e co

ntro

l of

jim

sonw

eed,

vel

verJ

eaf

and

cock

lebu

r.

Red

uce

met

ribu

zin

rate

if

soil

pH

is

abov

e 7.

0.

If s

oil

pH

is

7.4

or

abov

e, d

o no

t ap

ply

m

etri

buzi

n.

• Not

e la

bel

for

rota

tion

al c

rop

rest

rict

ions

. • L

asso

rat

e sh

ould

be

incr

ease

d to

3 q

t p

er a

cre

and

Dua

l to

2%

pt

per

acre

for

eff

ecti

ve n

utse

dge

cont

rol.

to

-4

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

(inc

ludi

ng n

ight

shad

e)

Nu

tsed

ge

chlo

ram

ben

(Am

iben

)

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

+ 2 or

2

1 ga

l 2

L

or

2%

lb 7

5%

DS

+ 2

qt or

2

pt

Las

so r

ate

shou

ld b

e in

crea

sed

to 3

qt

per

acr

e an

d D

ual

to 2

% p

t p

er a

cre

for

effe

ctiv

e nu

tsed

ge c

ontr

ol.

Ann

ual

gras

ses

trif

lura

lin

(Tre

jlan

)

pend

imet

hali

n (P

row

l)

IY2

pt

or 3

of

In

corp

orat

e or

m

ix

thor

ough

ly

into

to

p 2

soil

wit

hin

24 h

r af

ter

appl

icat

ion.

O

n sa

ndy

and

sand

y lo

am s

oils

low

in

orga

nic

mat

ter,

us

e %

lb

(1 p

t)

per

acre

. M

ost

effe

ctiv

e co

ntro

l if

app

lica

tion

is

mad

e 10

day

s to

2

wee

ks a

hea

d of

pla

ntin

g an

d fi

eld

rew

orke

d ju

st p

rior

to

pla

ntin

g.

2p

t In

corp

orat

e in

to

p 2

to 3

in.

In

corp

orat

e w

ithi

n 16

8 h

r (7

day

s)

unle

ss r

ainf

all

oc­

curs

(*

/4 t

o V

2 in

.).

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

(exc

ept

nigh

tsha

de)

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

(inc

ludi

ng n

ight

shad

e)

Com

bine

any

of

the

abov

e di

nitr

oani

line

s (T

rejl

an

or

Pro

wl)

wit

h m

etri

buzi

n (L

exon

e or

Se

ncor

)

% l

b 5

0W

Som

e co

ntro

l of

ji

mso

nwee

d, v

elve

tlea

f an

d co

ckle

bur.

or

See

spe

cifi

c re

mar

ks f

or e

ach

dini

troa

nili

ne h

erbi

cide

. %

pt

4L

Red

uce

rate

if

soil

pH

is

abov

e 7.

0.

or

— I

f so

il p

H

is 7

.4 o

r ab

ove,

do

not

appl

y m

etri

buzi

n.

% l

b 7

5%

DF

— N

ote

labe

l fo

r ro

tati

onal

cro

p re

stri

ctio

ns.

Com

bine

any

of

the

abov

e di

nitr

oani

line

s (T

rejl

an

or

Pro

wl)

w

ith

chlo

ram

ben

(Am

iben

)

1 ga

l 2

L

— S

ee s

peci

fic

rem

arks

for

eac

h di

nitr

oani

line

her

bici

de.

or

— I

ncre

ased

mus

tard

and

rag

wee

d co

ntro

l ov

er d

init

roan

i-2%

lb

75

% D

S li

nes

alon

e.

Page 28: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SO

YB

EA

NS

—P

rep

lan

t (C

ontin

ued)

P

repl

ant

Follo

wed

by

Pre

emer

genc

e

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

Din

itro

anil

ines

(T

refl

an,

FO

LL

OW

ED

B

Y:

chlo

ram

ben

(Am

iben

)

Pro

wl)

as

li

sted

ab

ove

appl

ied

prep

lant

in

corp

orat

ed

1 ga

l 2L

or

2

% l

b 7

5%

DS

App

lied

pr

eem

erge

nce.

dino

seb

(Pre

mer

ge)

4%

Vk

gal

— A

ppli

ed p

reem

erge

nce.

met

ribu

zin

(Lex

one

or

Senc

or)

linu

ron

(Lor

ox

or

Lin

ex)

% l

b 5

0W

App

lied

pr

eem

erge

nce.

or

Som

e co

ntro

l of

jim

sonw

eed

and

cock

lebu

r.

% p

t 4

L

— R

educ

e ra

te i

f so

il p

H i

s ab

ove

7.0.

or

If

soil

pH

is

7.4

or a

bove

, do

not

app

ly

met

ribu

zin.

V

i lb

75

% D

F —

Not

e la

bel

for

rota

tion

al c

rop

rest

rict

ions

.

m lb

sow

%

q

t4L

App

lied

pr

eem

erge

nce.

If

hea

vy r

ainf

all

occu

rs s

oon

afte

r ap

plic

atio

n, i

njur

y to

cr

op m

ay r

esul

t.

to

00

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

chlo

ram

ben

(Am

iben

)

Pre

emer

genc

e

l%g

al2

L

or

3.6

lb 7

5%

DS

May

be

nece

ssar

y to

rot

ary

hoe

if r

ainf

all

does

not

oc­

cur

wit

hin

4 to

5 d

ays

afte

r ap

plic

atio

n.

linu

ron

(Lor

ox

or L

inex

)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

+ 2 or

2

l%lb

50

W

or

% q

t 4

L

+ 2

qt or

2

pt

If h

eavy

rai

nfal

l oc

curs

soo

n af

ter

appl

icat

ion,

inj

ury

to

crop

may

res

ult.

Do

not

use

on

coar

se-t

extu

red

sand

y or

loa

my

sand

soi

ls

or o

n so

ils

wit

h le

ss t

han

2.5

% o

rgan

ic m

atte

r.

Pla

nt s

oybe

ans

at l

east

1%

in.

dee

p.

chlo

ram

ben

(Am

iben

)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

+ 2 or

2

1 ga

l 2

L

or

2% l

b 7

5%

DS

+ 2

qt or

2

pt

Pre

ferr

ed

on

sand

y so

ils

low

in

or

gani

c m

atte

r w

her

e in

jury

has

bee

n a

prob

lem

.

Page 29: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

to

Ann

ual b

road

leav

es

(incl

udin

g ni

ghts

hade

, pi

gwee

d an

d jim

son-

wee

d)

met

ribu

zin

(Lex

one

or S

enea

r)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

+

napt

alam

•+-

dino

seb

(Dya

nap)

acifl

uorf

en

(Bla

zer

2L)

+ su

rfac

tant

+ 2 or

2

% l

b 50

W

or

%p

t4L

or

%

lb 7

5% D

F +

2q

t or

2p

t

Som

e co

ntro

l of

coc

kleb

ur a

nd j

imso

nwee

d.

Red

uce

met

ribu

zin

rate

if

soil

pH i

s ab

ove

7.0.

If

soi

l pH

is

7.4

or a

bove

, do

not

app

ly m

etri

buzi

n.

Not

e la

bel

for

rota

tiona

l cr

op r

estr

ictio

ns.

or

2 + 6qt

2q

t or

lqt +

6q

t

App

ly 3

day

s af

ter

plan

ting

and

bef

ore

soyb

ean

leav

es

open

.

Post

emer

genc

e %

+ y8%

lqt +

• U

se a

min

imum

of

40 p

si a

nd 2

0 ga

l pe

r ac

re o

f w

ater

. D

o no

t us

e fl

ood

nozz

les.

Incr

ease

d cr

op i

njur

y m

ay o

ccur

with

the

add

ition

of

a su

rfac

tant

to

Bla

zer

2L.

Wea

k on

vel

vetle

af a

nd c

ockl

ebur

. D

elay

7 d

ays

betw

een

Bla

zer

use

and

Hoe

lon

trea

tmen

t. A

nnua

l br

oadl

eave

s (i

nclu

ding

coc

kleb

ur, v

el­

vetle

af a

nd j

imso

nwee

d)

bent

azon

(B

asag

ran)

-r

cr

op o

il co

ncen

trat

e + lq

t

lqt +

lqt

Use

a m

inim

um o

f 40

psi

and

20

gal/

A o

f w

ater

. D

o no

t us

e fl

ood

nozz

les.

N

o ac

tivity

fro

m B

asag

ran

pree

mer

genc

e.

Wea

k on

pig

wee

d, n

ight

shad

e, a

nd l

ambs

quar

ters

. D

elay

7 d

ays

betw

een

Bas

agra

n us

e an

d H

oelo

n tr

eat­

men

t. A

nnua

l br

oadl

eave

s ac

ifluo

rfen

(B

laze

r 2L

) +

bent

azon

(B

asag

ran)

+

crop

oil

conc

entr

ate

4- %

+ lpt

lpt +

l%p

t

+ lp

t

Use

a m

inim

um o

f 40

psi

and

20

gal

per

acre

of

wat

er.

Do

not

appl

y if

soyb

eans

are

und

er s

tres

s fr

om h

erbi

cide

in

jury

, co

ld o

r dr

y w

eath

er,

or h

ail

dam

age.

M

ost

effe

ctiv

e on

sm

all

wee

ds.

See

labe

l. In

crea

sed

crop

inj

ury

may

occ

ur w

ith t

he a

dditi

on o

f cr

op o

il co

ncen

trat

e to

Bla

zer

2L.

Ann

ual

gras

ses

Vol

unte

er c

orn

dicl

ofop

(H

oelo

n)

l%q

t N

ote

Hoe

lon

is a

res

tric

ted

use

herb

icid

e an

d re

quir

es

a ce

rtif

ied

appl

icat

or f

or u

se.

App

ly t

o gr

asse

s le

ss t

han

4 in

. tal

l. A

pply

to

volu

ntee

r co

rn l

ess

than

12

in.

tall

. D

o no

t ta

nk m

ix w

ith o

ther

che

mic

als.

D

elay

7

days

be

twee

n H

oelo

n us

e an

d B

asag

ran

or

Bla

zer

trea

tmen

t.

Page 30: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SO

YB

EA

NS

— P

oste

mer

genc

e

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

F

orm

ula

tion

/A

Rem

ark

s an

d L

imit

atio

ns

Nut

sedg

e C

anad

a th

istl

e be

ntaz

on

(Bas

agra

n)

+ cr

op o

il co

ncen

trat

e

% -

f %

l%

pt+

l^z

pt

— I

ncre

ase

Bas

agra

n ra

te t

o 1

qt

per

acre

for

ea

ch

appl

i­ca

tion

for

mor

e ef

fect

ive

Can

ada

this

tle

cont

rol.

+

+

Tre

at w

hen

nuts

edge

is

4 -

6 in

. an

d ag

ain

10 d

ays

late

r.

1 q

t +

1

qt

1 q

t +

1

qt

— S

ee n

utse

dge

rem

arks

un

der

Spe

cial

Wee

d P

robl

ems.

Use

a m

inim

um

of 4

0 ps

i an

d 20

gal

/A

of w

ater

. D

o no

t us

e fl

ood

nozz

les.

Del

ay 7

day

s be

twee

n B

asag

ran

use

and

Hoe

lon

trea

t­m

ent.

Ann

ual

gras

ses

Vol

unte

er

corn

fl

uazi

fop-

buty

l (F

usil

ade)

+ cr

op o

il co

ncen

trat

e or

se

thox

ydim

(P

oast

)

+ cr

op o

il co

ncen

trat

e

%

+ Iqt

or

0.19

+ Iqt

% p

t

+ Iq

t or

Ipt +

Iqt

Use

M p

t pe

r ac

re F

usil

ade

or

1M p

t pe

r ac

re P

oast

fo

r vo

lunt

eer

corn

. N

o so

il ac

tivi

ty f

rom

P

oast

or

Fus

ilad

e.

Con

trol

s on

ly

gras

ses

pres

ent

whe

n sp

raye

d.

Tre

at a

ctiv

ely-

grow

ing

gras

s u

p to

max

imum

of

4 in

ches

ta

ll

(see

lab

els)

or

vol

unte

er c

orn

18 i

nche

s ta

ll.

Use

a m

inim

um

of 5

gal

/A

wat

er a

nd 4

0 ps

i fo

r P

oast

or

F

usil

ade

appl

icat

ions

. A

void

dri

ft

onto

cor

n, s

orgh

um,

smal

l gr

ains

, an

d tu

rf.

Rai

nfal

l w

ithi

n 1

hour

of

appl

icat

ion

wil

l re

duce

con

trol

Doe

s no

t co

ntro

l nu

tsed

ge.

$ S

peci

al W

eed

Pro

blem

s

Vel

vetl

eaf

Coc

kleb

ur

Jim

sonw

eed

trif

lura

lin

(Tre

flan

)

or

pend

imet

hali

n (P

row

l)

or

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

+ ch

lora

mbe

n (A

mib

en)

+ m

etri

buzi

n (L

exon

e or

Se

ncor

)

%

or

1 or

2 or

2 + 2 + %

l%p

t

or

Iqt or

2

qt or

Iq

t + 4

qt2

L

or

2%

lb

75

% D

S

+ %

lb

50

W

or

%p

t4L

or

%

lb

75

% D

F

Pre

plan

t in

corp

orat

ed.

Onl

y fa

ir c

ontr

ol.

Som

e so

ybea

n in

jury

m

ay

occu

r.

Als

o m

ore

effe

ctiv

e co

ntro

l of

oth

er b

road

leav

ed

wee

ds.

Red

uce

met

ribu

zin

rate

if

soil

pH

is

abo

ve

7.0.

If

soi

l p

H

is 7

.4 o

r ab

ove,

do

not

appl

y m

etri

buzi

n.

Fol

low

wit

h po

stem

erge

nce

appl

icat

ion

of B

asag

ran

or

Bla

zer

(see

se

ctio

ns

abov

e)

if

need

ed

for

com

plet

e co

ntro

l.

Page 31: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Pre

plan

t In

corp

orat

ed

Vel

vetl

eaf

Jim

sonw

eed

Coc

kleb

ur

trif

lura

lin

(Tre

flan

)

or

pend

imet

hali

n (P

row

l)

or

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

+ m

etri

buzi

n (L

exon

e or

Sen

cor)

%

or

1 or

2 or

2 + %

FO

LL

OW

ED

BY

: w

P

reem

erge

nce

met

ribu

zin

(Lex

one

or

Senc

or)

Pre

plan

t In

corp

orat

ed

Jim

sonw

eed

Vel

vetl

eaf

Coc

kleb

ur

met

ribu

zin

(Lex

one

or

Senc

or)

+ tr

iflu

rali

n (T

refl

an)

or

pend

imet

hali

n (P

row

l)

or

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

% + %

or

1 or

2 or

2

1% p

t

or

lqt or

2

qt or

2

pt +

% l

b 50

W

or

%p

t4L

or

%

lb

75

% D

F

Pre

plan

t in

corp

orat

ed

tank

m

ix

of

dini

troa

nili

ne

or

acet

anil

ide

plus

m

etri

buzi

n fo

llow

ed

by

seco

nd

appl

i­ca

tion

of

met

ribu

zin

pree

mer

genc

e.

Bot

h m

etri

buzi

n tr

eatm

ents

nee

ded

for

eff

ecti

ve c

ontr

ol.

Som

e so

ybea

n in

jury

may

occ

ur.

Red

uce

met

ribu

zin

rate

if

soil

pH

is

abo

ve

7.0.

If

soi

l p

H

is 7

.4 o

r ab

ove,

do

not

appl

y m

etri

buzi

n.

- May

re

quir

e po

stem

erge

nce

appl

icat

ion

of e

ithe

r B

asa-

gran

or

B

laze

r fo

r co

mpl

ete

cont

rol.

See

ap

prop

riat

e se

ctio

ns

abov

e fo

r pa

rtic

ular

w

eed

spec

ies

and

use

di­

rect

ions

.

y 2 lb

sow

or

%

pt4

L

or

% l

b 7

5%

DF

% l

b 50

W

or

% p

t 4L

or

%

lb

75

% D

F

+ l^

pt

or

lqt or

2

qt

•Red

uce

Lex

one

or S

enco

r ra

te i

f so

il p

H i

s ab

ove

7.0.

-

Red

uce

met

ribu

zin

rate

if

soil

pH

is

abov

e 7.

0.

• If

soil

pH

is

7.4

or

abov

e, d

o no

t ap

ply

met

ribu

zin.

W

ILL

R

EQ

UIR

E

PO

ST

EM

ER

GE

NC

E

AP

PL

ICA

­T

ION

O

F E

ITH

ER

B

ASA

GR

AN

O

R

BL

AZ

ER

F

OR

C

OM

PL

ET

E

CO

NT

RO

L.

SE

E A

PP

RO

PR

IAT

E

SE

TIO

NS

AB

OV

E F

OR

PA

RT

ICU

LA

R W

EE

D

SP

EC

IES

AN

D

US

E

DIR

EC

TIO

NS

. S

ee a

ppro

pria

te s

ecti

ons

abov

e fo

r di

rect

ions

on

Tre

flan

, P

row

l, L

asso

or

Dua

l, pl

us

met

ribu

zin

use.

L

asso

&

met

ribu

zin

or

Dua

l &

met

ribu

zin

may

be

ap­

plie

d pr

eem

erge

nce.

or

lqt

FO

LL

OW

ED

BY

: (o

n p

age

32)

Page 32: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SO

YB

EA

NS

— S

peci

al W

eed

Pro

blem

s (C

ontin

ued)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

FO

LL

OW

ED

BY

: P

oste

mer

genc

e

acif

luor

fen

(Bla

zer

2L)

+ su

rfac

tant

or

be

ntaz

on

(Bas

agra

n)

+ cr

op o

il

conc

entr

ate

+ Vs%

or

1 + Iqt

Iqt

+ or

Iqt +

Iqt

Incr

ease

d cr

op

inju

ry

may

oc

cur

wit

h th

e ad

diti

on

of

a su

rfac

tant

to

Bla

zer

2L.

See

B

asag

ran

and

Bla

zer

2L

rem

arks

un

der

post

emer

­ge

nce

sect

ion.

Nu

tsed

ge

to

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

bent

azon

(B

asag

ran)

+

crop

oil

con

cent

rate

or

2%

3q

t or

l%q

t

Pre

plan

t in

corp

orat

ion

to a

dep

th o

f 2

-3 i

nche

s.

Som

e ea

rly

dist

orti

on

may

b

e ob

serv

ed

on

soyb

ean

leav

es.

Sha

llow

in

corp

orat

ion

wil

l im

prov

e co

ntro

l u

nd

er

con­

diti

ons

of l

imit

ed m

oist

ure.

% +

%

1%

pt

+

1% p

t —

TW

O

%-l

b A

PP

LIC

AT

ION

S R

EQ

UIR

ED

FO

R

BE

ST

S

ee R

emar

ks

NU

TS

ED

GE

C

ON

TR

OL

. +

+

Use

a m

inim

um o

f 4

0 ps

i an

d 2

0 g

al/A

of

wat

er.

Do

1 q

t +

1

qt

1 q

t +

1

qt

not

use

floo

d no

zzle

s.

— P

oste

mer

genc

e.

— T

reat

w

hen

nuts

edge

is

4 t

o 6

in.

and

agai

n 10

day

s la

ter.

Vol

unte

er c

orn

Wee

d es

cape

s P

eren

nial

s

glyp

hosa

te

(Rou

ndup

) R

ate

vari

es,

see

labe

l an

d pe

renn

ial

wee

d co

ntro

l se

ctio

n (p

g 42

)

Use

w

ith

rope

-wic

k ap

plic

ator

, w

ipe-

on

appl

icat

or,

or^

reci

rcul

atin

g sp

raye

r.

Qua

ckgr

ass

flua

zifo

p-bu

tyl

(Fus

ilad

e)

+ cr

op o

il co

ncen

trat

e or

se

thox

ydim

(P

oast

) +

crop

oil

conc

entr

ate

% +

%

+ lqt+

Iq

t or

0.

48 +

0.2

9

+ 1 qt

+

1 qt

% p

t -f

% p

t

4-

1 qt

+ 1

qt

or

2% p

t -f

1%

pt

+ 1

qt +

1

qt

TW

O

AP

PL

ICA

TIO

NS

AR

E

NE

ED

ED

F

OR

B

ES

T

QU

AC

KG

RA

SS

CO

NT

RO

L.

MA

KE

S

EC

ON

D

AP

­P

LIC

AT

ION

14

-21

DA

YS

FO

LL

OW

ING

IN

ITIA

L

TR

EA

TM

EN

T.

CU

TIV

AT

ION

MA

Y R

EP

LA

CE

SE

ON

D

AP

PL

ICA

TIO

N.

No

soil

act

ivit

y fr

om

Poa

st

or F

usil

ade.

C

ontr

ols

only

gr

ass

pres

ent

whe

n sp

raye

d.

• T

reat

ac

tive

ly

grow

ing

quac

kgra

ss 6

-8 i

n.

tall

. • U

se a

min

imum

of

10 g

al/A

wat

er a

nd 4

0 ps

i fo

r F

usi­

lade

or

Poa

st a

ppli

cati

ons.

•A

void

dr

ift

onto

cor

n, s

orgh

um,

smal

l gr

ains

, an

d tu

rf.

• R

ainf

all

wit

hin

one

hour

of

ap

plic

atio

n w

ill

redu

ce

cont

rol.

Add

itio

n of

oth

er h

erbi

cide

s to

tan

k m

ay r

edu

ce q

uack

­gr

ass

cont

rol.

Page 33: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Pre

emer

genc

e —

Org

anic

Soi

ls

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

chlo

ram

ben

(Am

iben

)

+ al

achl

or

(Las

so)

+ 4

Vk

ga!

2L

or

3.

6 lb

75

% D

S +

lga

l

— M

ay

requ

ire

post

emer

genc

e ap

plic

atio

ns

for

com

plet

e co

ntro

l (s

ee

belo

w).

Pos

tem

erge

nce

Ann

ual

broa

dlea

ves

(inc

ludi

ng n

ight

shad

e,

pigw

eed,

an

d ji

mso

n-w

eed

)

acif

luor

fen

(Bla

zer

2L)

+ su

rfac

tant

%

Va%

Org

anic

1

qt

Soils

Use

a m

inim

um o

f 4

0 ps

i an

d 20

gal

per

acr

e of

wat

er.

Do

not

use

floo

d no

zzle

s.

Incr

ease

d cr

op

inju

ry

may

oc

cur

wit

h th

e ad

diti

on o

f a

surf

acta

nt

to B

laze

r 2L

, W

eak

on v

elve

tlea

f an

d co

ckle

bur.

D

elay

7 d

ays

bet

wee

n B

laze

r us

e an

d H

oelo

n tr

eatm

ent.

Ann

ual

broa

dlea

ves

(inc

ludi

ng c

ockl

ebur

, ve

l­ve

tlea

f an

d ji

mso

nwee

d)

bent

azon

(B

asag

ran)

+

crop

oil

con

cent

rate

Iq

t

Iqt +

Iqt

Wea

k on

pig

wee

d, n

ight

shad

e, a

nd

lam

bsqu

arte

rs.

Use

a m

inim

um o

f 40

psi

and

20

gal

/A w

ater

. D

o no

t us

e fl

ood

nozz

les.

N

o ac

tivi

ty f

rom

B

asag

ran

pree

mer

genc

e.

Del

ay 7

day

s be

twee

n B

asag

ran

use

and

Hoe

lon

trea

t­m

ent.

Ann

ual

broa

dlea

ves

Go

acif

luor

fen

(Bla

zer

2L)

bent

azon

(B

asag

ran)

+

crop

oil

conc

entr

ate

+ %

+ lpt

lpt +

1% p

t

+ lp

t

Use

a m

inim

um o

f 4

0 ps

i an

d 2

0 ga

l pe

r ac

re o

f w

ater

. D

o no

t ap

ply

if s

oybe

ans

are

un

der

srt

ess

from

he

rbic

ide

inju

ry,

cold

or

dry

wea

ther

, or

hai

l da

mag

e.

Mos

t ef

fect

ive

on s

mal

l w

eeds

. S

ee l

abel

. In

crea

sed

crop

in

jury

m

ay

occu

r w

ith

the

addi

tion

of

cr

op o

il c

once

ntra

te t

o B

laze

r 2L

.

Ann

ual

gras

ses

Vol

unte

er c

orn

dicl

ofop

(H

oelo

n)

1%

qt

Not

e H

oelo

n is

a r

estr

icte

d us

e he

rbic

ide

and

requ

ires

a

cert

ifie

d ap

plic

ator

for

use

. A

pply

to

gras

ses

less

tha

n 4

in.

tall

. A

pply

to

volu

ntee

r co

rn l

ess

than

12

in.

tall

. D

o no

t ta

nk m

ix w

ith

othe

r ch

emic

als.

D

elay

7

days

be

twee

n H

oelo

n us

e an

d B

asag

ran

or

Bla

zer

trea

tmen

t.

seth

oxyd

im

(Toa

st)

+ cr

op o

il co

ncen

trat

e

or

flua

zifo

p -

buty

l (F

usil

ade)

_|_

cr

op o

il c

once

ntra

te

0.19

+ 1 q

t or

V

*

4_

1 q

t

lpt +

Iqt

or

1/2 p

t + 1

qt

Use

%

p

t pe

r ac

re

Fus

ilad

e or

\lA

pt

pe

r ac

re

Poa

st

for

volu

ntee

r co

rn.

No

soil

acti

vity

fr

om

Poa

st

or

Fus

ilad

e.

Con

trol

s on

ly

gras

ses

pres

ent

whe

n sp

raye

d.

Tre

at

acti

vely

gr

owin

g gr

asse

s a

max

imum

of

4

in.

tall

or

volu

ntee

r co

rn

18 i

n. t

all.

Use

a m

inim

um

of 5

gal

/A w

ater

and

40

psi

for

Poa

st

or F

usil

ade

appl

icat

ions

. •A

void

dri

ft

onto

cor

n, s

orgh

um,

smal

l gr

ains

, an

d tu

rf.

• R

ainf

all

wit

hin

one

hour

of

appl

icat

ion

wil

l re

duce

con

­tr

ol.

Doe

s no

t co

ntro

l nu

tsed

ge.

Page 34: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SO

YB

EA

NS

— P

oste

mer

genc

e —

Org

anic

Soi

ls (

Con

tinue

d)

Wee

d C

ontr

olle

d H

erb

icid

e

seth

oxyd

im

(Poa

st)

+ cr

op o

il co

ncen

trat

e

or

flna

zifo

p -

buty

l (F

usil

ade)

+

crop

oil

con

cent

rate

Rat

e lb

/A a

.i.

0.48

+

0.29

+ 1 q

t +

1

qt

or

y 4 +

y 4

+ 1 q

t +

1

qt

Fo

rmu

lati

on

/A

2%

pt

+

1% p

t

+ 1

qt

+

1 q

t

or

% p

t +

% p

t

+ 1

qt

+

1 q

t

Rem

ark

s an

d L

imit

atio

ns

Qua

ckgr

ass

— T

WO

A

PP

LIC

AT

ION

S A

RE

N

EE

DE

D

FO

R

BE

ST

Q

UA

CK

GR

AS

S C

ON

TR

OL

. M

AK

E

SE

CO

ND

A

PL

ICA

TIO

N

14-2

1 D

AY

S F

OL

LO

WIN

G

INIT

IAL

T

RE

AT

ME

NT

. C

UL

TIV

AT

ION

M

AY

R

EP

LA

CE

S

EC

ON

D

AP

PL

ICA

TIO

N.

— N

o so

il ac

tivi

ty

from

P

oast

or

Fus

ilad

e.

Con

trol

s on

ly

gras

s pr

esen

t w

hen

spra

yed.

Tre

at a

ctiv

ely

grow

ing

quac

kgra

ss 6

-8 i

nche

s ta

ll.

— U

se a

min

imum

of

5 g

al/A

w

ater

and

40

psi

for

Poa

st

or F

usil

ade

appl

icat

ions

. —

Avo

id d

rift

on

to c

orn,

sor

ghum

, sm

all

grai

ns,

and

turf

. —

Rai

nfal

l w

ithi

n 1

hour

of

appl

icat

ion

wil

l re

duce

con

trol

. —

Add

itio

n of

oth

er h

erbi

cide

s to

tan

k m

ay r

educ

e qu

ack­

gras

s co

ntro

l.

fc

No

Till

(Fol

low

ing

corn

, sm

all

grai

ns,

or w

ith

rye

or

whe

at

cove

r cr

op)

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

met

ribu

zin

(Lex

one

or

Senc

or)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

or

or

yzal

in

(Sur

flan

)

+ p

araq

uat

(P

araq

uat,

Gra

mox

one)

or

gl

ypho

sate

(R

ound

up)

% + 2

%

or 2 1 + %

or

1%

% l

b 5

0W

or

%

pt4

L

or

Vz

lb 7

5%

DF

+ 2

%q

t

or

lqt

lqt +

lqt or

l%

qt

— A

ppli

ed

pree

mer

genc

e.

— R

educ

e m

etri

buzi

n ra

te i

f so

il p

H

is a

bove

7.

0.

— I

f so

il p

H

is 7

.4 o

r ab

ove,

do

not

appl

y m

etri

buzi

n.

— N

ote

labe

l fo

r ro

tati

onal

cr

op

rest

rict

ions

. —

Par

aqua

t ap

plie

d be

fore

rye

joi

ntin

g (2

4-2

6"

tall

) m

ay

not

prov

ide

com

plet

e co

ntro

l. —

To

avoi

d ex

cess

ive

cove

r cr

op

grow

th,

par

aqu

at

or

Rou

ndup

m

ay

be

appl

ied

prio

r to

pl

anti

ng.

— U

se 3

qt

Las

so w

ith

heav

y an

nual

gra

ss

(esp

ecia

lly

fall

pa

nicu

m

and

crab

gras

s)

infe

stat

ions

. —

Max

imum

Dua

l ra

te i

n m

etri

buzi

n ta

nk m

ixes

is

IVn

pt

on f

ine

text

ured

so

ils.

Use

20

to 6

0 ga

l sp

ray

per

acre

wit

h p

araq

uat

and

20

to

30 g

al s

pray

pe

r ac

re w

ith

Rou

ndup

. —

Use

x h

pt

X77

or

sim

ilar

no

n-io

nic

surf

acta

nt

per

100

gal

wat

er w

ith

par

aqu

at a

ppli

cati

ons.

D

oubl

e su

rfac

tant

ra

te i

f li

quid

fer

tili

zer

is u

sed

as a

ca

rrie

r.

— D

o no

t us

e su

spen

sion

or

hig

h ph

osph

ate

liqu

id

fert

i­li

zers

as

carr

iers

for

p

araq

uat

ap

plic

atio

ns.

— F

ollo

w

mix

ing

dire

ctio

ns

on

par

aqu

at

and

Rou

ndup

la

bels

. —

Par

aqua

t gi

ves

fast

er

knoc

kdow

n.

Rou

ndup

m

ay

pro­

vide

be

tter

co

ntro

l if

w

eed

or

cove

r cr

op

grow

th

is

dens

e.

— M

ay

need

fo

llow

u

p tr

eatm

ent

wit

h B

asag

ran,

B

laze

r,

Hoe

lon,

P

oast

, or

Fus

ilad

e (s

ee "

Pos

tem

erge

nce"

sec

tion

fo

r w

eeds

co

ntro

lled

an

d us

e di

rect

ions

) fo

r w

eed

es­

cape

s.

Page 35: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

00

linur

on

(Lor

ox

or

Lin

ex)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

or

or

yzal

in

(Sur

flan

)

+ p

araq

uat

(P

araq

uat,

Gra

mox

one)

or

gl

ypho

sate

(R

ound

up)

%

+ 2%

or

2 1 + Vz

or

1%

1% l

b 50

W

or

%q

t4L

+ 2

%q

t

or

lqt

lqt +

lqt or

l%

qt

— W

her

e no

cov

er

crop

is

pres

ent

and

annu

al w

eeds

ar

e sm

all,

the

rate

of

par

aqu

at m

ay b

e re

duce

d to

1 p

t pe

r ac

re o

r th

e ra

te

of

Rou

ndup

m

ay

be

redu

ced

to

1 q

t pe

r ac

re.

(See

L

abel

.)

— A

pre

pack

aged

m

ix

of

Las

so

+

Rou

ndup

(B

ronc

o)

is

avai

labl

e.

— A

ppli

ed

pree

mer

genc

e.

— D

o no

t us

e on

coa

rse

text

ured

san

dy o

r lo

amy

sand

soi

ls

or o

n so

ils w

ith

less

tha

n 2

.5%

org

anic

mat

ter.

If

heav

y ra

infa

ll o

ccur

s so

on a

fter

app

lica

tion

, in

jury

to

cr

op m

ay

resu

lt.

— P

lant

soy

bean

s at

lea

st 1

%

in.

deep

. —

Par

aqua

t ap

plie

d be

fore

ry

e jo

inti

ng

(24

-36

" ta

ll)

may

no

t pr

ovid

e co

mpl

ete

cont

rol.

— T

o av

oid

exce

ssiv

e co

ver

crop

gr

owth

, p

araq

uat

or

R

ound

up

may

be

appl

ied

prio

r to

pla

ntin

g.

— U

se 3

qt

Las

so w

ith

heav

y an

nual

gra

ss

(esp

ecia

lly

fall

pani

eum

and

cra

bgra

ss)

infe

stat

ions

. —

Max

imum

D

ual

rate

in

Lor

ox

tank

m

ixes

is

2Vz

pt

on

fine

tex

ture

d so

ils.

Use

20

to 6

0 ga

l sp

ray

per

acre

wit

h p

araq

uat

and

20

to

30 g

al s

pray

per

acr

e w

ith

Rou

ndup

. —

Use

xk

pt

X77

or

sim

ilar

no

n-io

nic

surf

acta

nt

per

100

gal

wat

er w

ith

par

aqu

at a

ppli

cati

ons.

Dou

ble

surf

acta

nt

rate

if

li

quid

fe

rtil

izer

is

use

d as

a

carr

ier.

Do

not

use

susp

ensi

on

or h

igh

phos

phat

e li

quid

fe

rti­

lize

rs a

s ca

rrie

rs f

or p

araq

uat

ap

plic

atio

ns.

— F

ollo

w

mix

ing

dire

ctio

ns

on

par

aqu

at

or

Rou

ndup

la

bels

. —

Par

aqua

t gi

ves

fast

er k

nock

dow

n. R

ound

up

may

pro

vide

be

tter

con

trol

if

wee

d or

cov

er c

rop

grow

th i

s de

nse.

Wh

ere

no c

over

cro

p is

pre

sent

an

d an

nual

w

eeds

ar

e sm

all,

the

rate

of

par

aqu

at m

ay b

e re

duce

d to

1 p

t pe

r ac

re

or

the

rate

of

R

ound

up

may

be

re

duce

d to

1

qt

per

acre

. (S

ee

Lab

el.)

— M

ay

need

fo

llow

u

p tr

eatm

ent

wit

h B

asag

ran,

B

laze

r,

Hoe

lon,

P

oast

, or

Fus

ilad

e (s

ee "

Pos

tem

erge

nce"

sec

tion

fo

r w

eeds

co

ntro

lled

an

d us

e di

rect

ions

) fo

r w

eed

es­

cape

s.

— A

pre

pack

aged

m

ix

of

Las

so

+

Rou

ndup

(B

ronc

o)

is

avai

labl

e.

Page 36: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SO

YB

EA

NS

— P

oste

mer

genc

e (C

ontin

ued)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tion

/A

Rem

ark

s an

d L

imit

atio

ns

03

05

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

met

ribu

zin

(Lex

one

or

+ ch

lora

mbe

n (A

mib

en)

+ al

achl

or

(Las

so)

or

met

olac

hlor

(D

ual)

+ pa

raqu

at

Senc

or)

(Par

aqua

t, G

ram

oxon

e)

or

glyp

hosa

te

(Rou

ndup

)

% + 2 + 2

%

or

2 + %

or

1%

% l

b 50

W

or

%

pt

4L

or

%

lb

75

%

DF

+ 4

qt

2L

or

2%

lb

75

%

DS

+ 2

%

qt

or

Iq

t + Iq

t or

1%

q

t

- App

lied

pr

eem

erge

nce.

• R

educ

e m

etri

buzi

n ra

te

if

soil

pH

is

abo

ve

7.0.

- I

f so

il p

H

is 7

.4 o

r ab

ove,

do

not

appl

y m

etri

buzi

n.

- Not

e la

bel

for

rota

tion

al

crop

re

stri

ctio

ns.

Par

aqu

at

appl

ied

befo

re

rye

join

ting

(2

4-26

in

. ta

ll)

may

no

t pr

ovid

e co

mpl

ete

cont

rol.

To

avoi

d ex

cess

ive

cove

r cr

op

grow

th,

par

aqu

at

or

Rou

ndup

m

ay

be

appl

ied

prio

r to

pl

anti

ng.

- Use

3 q

t L

asso

wit

h he

avy

annu

al g

rass

(e

spec

iall

y fa

ll pa

nicu

m

and

crab

gras

s)

infe

stat

ions

. -

Max

imum

D

ual

rate

in

met

ribu

zin

tank

mix

es i

s 2

%

pt

on f

ine

text

ured

soi

ls.

- Use

20

to 6

0 ga

l sp

ray

per

acre

wit

h pa

raqu

at a

nd 2

0 to

30

gal

spr

ay p

er

acre

wit

h R

ound

up.

Use

V

z pt

X77

or

sim

ilar

non

-ion

ic

surf

acta

nt

per

100

gal

wat

er w

ith

par

aqu

at a

ppli

cati

ons.

D

oubl

e su

rfac

tant

ra

te

if li

quid

fe

rtil

izer

is

use

d as

a

carr

ier.

- D

o no

t us

e su

spen

sion

or

hi

gh

phos

phat

e li

quid

fe

rti­

lize

rs

as c

arri

ers

for

para

quat

ap

plic

atio

ns.

•Fol

low

m

ixin

g di

rect

ions

on

p

araq

uat

an

d R

ound

up

labe

ls.

- P

araq

uat

give

s fa

ster

kn

ockd

own.

R

ound

up

may

pr

o­vi

de

bett

er

cont

rol

if w

eed

or

cove

r cr

op

grow

th

is

dens

e.

- W

her

e no

cov

er

crop

is

pre

sent

an

d an

nual

wee

ds

are

smal

l, th

e ra

te o

f p

araq

uat

may

be

redu

ced

to 1

pt

per

acre

or

th

e ra

te

of

Rou

ndup

m

ay

be

redu

ced

to

1 q

t pe

r ac

re.

(See

L

abel

.)

- May

nee

d fo

llow

u

p tr

eatm

ents

w

ith

Bas

agra

n,

Bla

zer,

H

oelo

n,

Poa

st,

or F

usil

ade

(see

"P

oste

mer

genc

e" s

ecti

on

for

wee

ds

cont

roll

ed

and

use

dire

ctio

ns)

for

wee

d es

cape

s.

•A

prep

acka

ged

mix

of

L

asso

-f-

R

ound

up

(Bro

nco)

is

av

aila

ble.

Page 37: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

WEE

D C

ONT

ROL

GU

IDE

FOR

SM

ALL

GR

AIN

S B

arle

y an

d W

heat

(w

ithou

t le

gum

e se

edin

gs)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

broa

dlea

ves

2,4-

D

amin

e

brom

oxyn

il

(Buc

tril

) or

(M

E4

Bro

min

al)

Vz

lpt

App

ly

at

or

afte

r fu

ll ti

ller

ing

bu

t be

fore

th

e bo

ot

stag

e (t

he

grai

n is

usu

ally

6 t

o 8

in.

tall

at

full

till

erin

g,

and

the

boot

st

age

is r

each

ed

whe

n th

e up

per

shea

th

is b

egin

ning

to

sw

ell

wit

h th

e en

larg

ing

head

).

Do

not

appl

y in

th

e fa

ll.

or

l^p

t

or

%p

t

May

be

appl

ied

from

em

erge

nce

and

up

to b

oot

stag

e.

Goo

d co

vera

ge e

ssen

tial

. •

Bro

mox

ynil

mus

t be

app

lied

to

smal

l w

eeds

(l

ess

than

4"

ta

ll,

or V

A"

rose

ttes

) fo

r ef

fect

ive

cont

rol.

Bro

mox

ynil

is

wea

k on

may

wee

d, m

usta

rds,

and

he

nbit

.

Per

enni

als

(bin

dwee

d,

this

tles

) 2,

4-D

est

er

dica

mba

(B

anve

l)

or

(Ban

vel

II)

%

l%p

t U

se

whe

n gr

ain

is

full

y ti

ller

ed

bu

t be

fore

th

e bo

ot

stag

e.

Con

trol

is

lim

ited

. In

jury

m

ay

occu

r.

Som

e co

ntro

l of

wil

d on

ion

and

wil

d ga

rlic

.

or

y 8

%p

t

or

%

pt

Do

not

appl

y to

spr

ing-

seed

ed b

arle

y.

• S

ome

cont

rol

of w

ild

onio

n an

d w

ild

garl

ic.

Inju

ry

may

occ

ur o

n so

me

vari

etie

s of

w

heat

—T

ecum

-se

h, A

be,

Art

hur—

do n

ot u

se o

n th

ese

vari

etie

s.

May

be

ap

plie

d fr

om

earl

y sp

ring

un

til

full

till

erin

g (t

he g

rain

is

usua

lly

6 to

8 i

n. t

all

at t

his

stag

e).

Wil

d ga

rlic

W

ild

onio

n di

cam

ba

(Ban

vel)

or

(B

anve

l II

)

+ 2,

4-D

%

%p

t

or

%

+ %

or

x/z p

t

+ lp

t

— D

o no

t ap

ply

to s

prin

g-se

eded

bar

ley.

Inj

ury

may

occ

ur o

n so

me

vari

etie

s of

w

heat

—T

ecum

-se

h, A

be,

Art

hur—

do n

ot u

se o

n th

ese

vari

etie

s.

— M

ay u

se

eith

er e

ster

or

amin

e 2,

4-D

. —

Sho

uld

be a

ppli

ed

at f

ull

till

erin

g (t

he

grai

n is

usu

ally

6

to 8

in.

tal

l at

thi

s st

age)

.

Ann

ual

broa

dlea

ves

2,4-

D

(am

ine)

MC

PA

Oat

s w

ithou

t Le

gum

e Se

edin

gs

%P

t —

Use

whe

n gr

ain

is f

ully

ti

ller

ed

bu

t be

fore

bo

ot

stag

e.

— S

ome

yiel

d re

duct

ion

may

occ

ur b

ut

gene

rall

y le

ss t

han

caus

ed b

y w

eeds

.

%p

t L

ess

inju

riou

s th

an 2

,4-D

. L

ess

effe

ctiv

e th

an 2

,4-D

. U

se w

hen

grai

n is

til

leri

ng b

ut

befo

re t

he b

oot

stag

e.

brom

oxyn

il (B

uctr

il)

or

(ME

4 B

rom

inal

)

%

or

%

l%p or

%p

t

— M

ay b

e ap

plie

d fr

om e

mer

genc

e an

d u

p to

boo

t st

age.

Goo

d co

vera

ge e

ssen

tial

. —

Bro

mox

ynil

mus

t be

app

lied

to

sm

all

wee

ds

(les

s th

an

4"

tall

, or

1%

" ro

sett

es)

for

effe

ctiv

e co

ntro

l.

— B

rom

oxyn

il i

s w

eak

on m

ayw

eed,

mus

tard

s, a

nd

henb

it.

Page 38: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SM

ALL

GR

AIN

S (

Con

tinue

d)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tion

/A

Rem

ark

s an

d L

imit

atio

ns

Ann

ual

broa

dlea

ves

MC

PA

dino

seb

(Pre

mer

ge)

Sm

all

Gra

ins

See

ded

to

Legu

mes

%

pt

Use

whe

n gr

ain

is t

ille

ring

but

bef

ore

the

boot

sta

ge.

— A

can

opy

of g

rain

an

d w

eeds

ove

r th

e se

edin

g w

ill

re­

duce

th

e po

ssib

ilit

y of

in

jury

to

the

le

gum

e.

— S

wee

t cl

over

is

ver

y se

nsit

ive

to M

CP

A.

1.1

l%q

t —

Use

whe

n gr

ain

is 2

to

6 in

. ta

ll an

d w

eed

s ar

e sm

all.

— U

se b

etw

een

30 a

nd 5

0 ga

l of

wat

er p

er a

cre.

Gre

ater

inj

ury

to c

rop

if s

pray

ed d

urin

g cl

oudy

wea

ther

.

00

00

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

WEE

D C

ONT

ROL

GU

IDE

FO

R F

ORA

GES

A

lfalfa

, T

refo

il an

d C

love

r S

eedi

ngs

(cle

ar

seed

ings

w

ithou

t sm

all

grai

n co

mpa

nion

cr

ops)

EP

TC

(E

ptam

or

G

enep

) 3

%p

t W

ork

into

soi

l im

med

iate

ly

afte

r ap

plic

atio

n.

See

d m

ay b

e pl

ante

d im

med

iate

ly

afte

r th

is

oper

atio

n.

Do

not

use

whe

n gr

ass

is s

eede

d w

ith

legu

mes

.

bene

fin

(Bal

an)

1V8

3q

t —

See

rem

arks

ab

ove

for

EP

TC

.

Ann

ual

broa

dlea

ves

4-(2

,4-D

B)

amin

e (B

utox

one

200

or

But

yrac

20

0)

2q

t - A

pply

pos

tem

erge

nce

whe

n se

edli

ngs

are

at o

r be

yond

th

e 2

to 3

tr

ifol

iate

le

af

stag

e.

- Can

us

e if

annu

al

broa

dlea

f pr

oble

m

deve

lops

af

ter

usin

g E

ptam

, G

enep

or

B

alan

. -

Thi

s tr

eatm

ent

is n

ot l

abel

ed

for

use

wit

h sm

all

grai

n co

mpa

nion

cr

ops.

- D

o no

t ap

ply

to

swee

t cl

over

or

es

tabl

ishe

d cl

over

s gr

own

for

seed

. - D

o no

t gr

aze

or f

eed

hay

from

for

age

for

60 d

ays

afte

r ap

plic

atio

n.

- Do

not

appl

y w

hen

crop

is

unde

r st

ress

. D

o no

t ap

ply

whe

n th

e da

ytim

e te

mpe

ratu

re

is

ex­

pect

ed

to e

xcee

d 90

°F

wit

hin

the

next

3 d

ays.

D

o no

t ap

ply

if

tem

pera

ture

is

ex

pect

ed

to

fall

be

low

40

°F

shor

tly

afte

r tr

eatm

ent.

Per

enni

al w

eed

s (q

uack

gras

s,

Can

ada

this

tle,

mil

kw

eed

, et

c.)

glyp

hosa

te

(Rou

ndup

) R

ate

vari

es,

see

labe

l an

d pe

renn

ial

wee

d co

ntro

l se

ctio

n (p

gs.

50-5

1)

App

ly

to p

eren

nial

s at

la

bele

d ra

te

and

grow

th

stag

e be

fore

al

falf

a es

tabl

ishm

ent.

Page 39: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Alfa

lfa (

Est

ablis

hed

Sta

nd)

Yel

low

roc

ket

and

broa

d-le

aved

win

ter

annu

als

sim

azm

e (P

rinc

ep)

l^ib

sow

F

orag

e gr

asse

s w

ill

be i

njur

ed o

r ki

lled

. U

se 2

lb

Pri

ncep

on

fin

e te

xtur

ed

soil

s w

ith

4 to

6%

or

gani

c m

atte

r (e

stab

lish

ed

stan

ds

on

ly).

Som

e co

ntro

l of

see

dlin

g w

hite

coc

kle.

F

or

fall

appl

icat

ion

on

esta

blis

hed

(1

year

) al

falf

a or

af

ter

the

last

cut

ting

(b

efor

e th

e gr

ound

fr

eeze

s)

of

a sp

ring

see

ded

(by

June

1)

new

alf

alfa

st

and.

W

ill

cont

rol

win

ter

annu

als:

ye

llow

ro

cket

, he

nbit

, ch

ickw

eed,

pe

pper

gras

s,

shep

herd

's

purs

e an

d do

wny

br

ome.

Som

e in

jury

to

alf

alfa

m

ay

occu

r on

san

ds

and

loam

y sa

nds

low

in

orga

nic

mat

ter.

met

ribu

zin

(Lex

one

or

Senc

or)

Vz

1 lb

50

W

or

lpt4

L

or

% l

b 7

5%

DF

App

ly t

o do

rman

t al

falf

a in

lat

e fa

ll or

ear

ly s

prin

g.

Non

-dor

man

t al

falf

a m

ay b

e se

vere

ly

inju

red.

GO

terb

acil

(S

inba

r)

VA

A

pply

to

dorm

ant

alfa

lfa

in l

ate

fall

or e

arly

spr

ing.

N

ote

labe

l fo

r ro

tati

onal

cro

p re

stri

ctio

ns.

Ear

ly

spri

ng

appl

icat

ions

w

ill

cont

rol

othe

r br

oadl

eaf

wee

ds a

nd s

uppr

ess

quac

kgra

ss

infe

stat

ions

.

hexa

zino

ne

(Vel

par)

.6

lb

90

W

or

1 q

t 2L

App

ly

in

spri

ng

befo

re

alfa

lfa

grow

th

exce

eds

2 in

. S

prin

g ap

plic

atio

ns

to

dorm

ant

alfa

lfa

prov

ide

the

grea

test

cr

op

safe

ty.

App

lica

tion

ca

n be

m

ade

betw

een

cutt

ings

be

fore

re

-gr

owth

ex

ceed

s 2

in.

in h

eigh

t,

how

ever

, al

falf

a in

jury

m

ay

resu

lt

if pl

ants

ar

c un

der

stre

ss.

Do

not

mak

e m

ore

than

on

e ap

plic

atio

n in

one

gro

win

g se

ason

. •

Do

not

appl

y to

see

dlin

g al

falf

a or

alf

alfa

-for

age

gras

s m

ixtu

res.

D

o no

t ap

ply

whi

le

crop

is

unde

r st

ress

. D

o no

t ap

ply

to s

now

cov

ered

or

fro

zen

grou

nd.

Use

20

or

m

ore

gall

ons

of

wat

er

per

acre

fo

r gr

ound

ap

plic

atio

n.

• D

o no

t gr

aze

or f

eed

trea

ted

fora

ge

to l

ives

tock

for

30

da

ys

foll

owin

g ap

plic

atio

n.

Rot

atio

nal

rest

rict

ion:

C

orn

may

be

plan

ted

12 m

onth

s fo

llow

ing

the

last

app

lica

tion

pro

vide

d th

e so

il is

mol

d-bo

ard

plow

ed p

rior

to

plan

ting

. D

o no

t pl

ant

any

othe

r cr

op

for

two

year

s af

ter

appl

icat

ion.

Page 40: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

FOR

AG

ES

—A

lfal

fa

(Con

tinu

ed)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tion

/A

Rem

ark

s an

d L

imit

atio

ns

Dan

deli

ons

met

ribu

zin

(Lex

one

or

Senc

or)

2 lb

50

W

— A

pply

in

spri

ng b

efor

e al

falf

a br

eaks

dor

man

cy.

or

— N

on-d

orm

ant

alfa

lfa

may

be

seve

rely

in

jure

d.

1 q

t 4

L

— P

eren

nial

gra

sses

may

al

so b

e su

ppre

ssed

. or

Ear

ly

spri

ng

appl

icat

ions

w

ill

cont

rol

othe

r br

oadl

eaf

1% l

b 7

5%

DF

wee

ds a

nd s

uppr

ess

quac

kgra

ss

infe

stat

ions

.

hexa

zino

ne

(Vel

par)

©

1.1

lb

90

W

or

2q

t2L

- A

pply

in

sp

ring

be

fore

al

falf

a gr

owth

ex

ceed

s 2

in.

Spr

ing

appl

icat

ions

to

do

rman

t al

falf

a pr

ovid

e th

e gr

eate

st

crop

sa

fety

. -A

ppli

cati

on

can

be

mad

e be

twee

n cu

ttin

gs

befo

re

re-

grow

th

exce

eds

2 in

. in

hei

ght,

how

ever

, al

falf

a in

jury

m

ay

resu

lt

if

plan

ts

are

unde

r st

ress

. D

o no

t m

ake

mor

e th

an

one

appl

icat

ion

in o

ne g

row

ing

seas

on.

• Do

not

appl

y to

see

dlin

g al

falf

a or

alf

alfa

-for

age

gras

s m

ixtu

res.

Do

not

appl

y w

hile

cr

op i

s un

der

stre

ss.

• D

o no

t ap

ply

to s

now

cov

ered

or

fro

zen

grou

nd.

Use

20

or

m

ore

gall

ons

of

wat

er

per

acre

for

gr

ound

ap

plic

atio

n.

• D

o no

t gr

aze

or f

eed

trea

ted

fora

ge

to l

ives

tock

for

30

da

ys

foll

owin

g ap

plic

atio

n.

Rot

atio

nal

rest

rict

ion:

C

orn

may

be

plan

ted

12 m

onth

s fo

llow

ing

the

last

app

lica

tion

pro

vide

d th

e so

il i

s m

old-

boar

d pl

owed

pri

or t

o pl

anti

ng.

Do

not

plan

t an

y ot

her

crop

for

tw

o ye

ars

afte

r ap

plic

atio

n.

Wil

l al

so p

rovi

de

part

ial

cont

rol

of

quac

kgra

ss.

Hoa

ry a

lyss

um

Ann

ual

broa

dlea

ves

4-(2

,4-D

B)

amin

e (B

utox

one

200

or

But

yrac

20

0)

2q

t E

arly

Apr

il.

Spr

ay w

hen

hoar

y al

yssu

m s

eedl

ings

are

in

two

to f

our

leaf

st

age.

D

o no

t gr

aze

or f

eed

hay

from

for

age

for

30 d

ays

afte

r ap

plic

atio

n D

o no

t ap

ply

whe

n cr

op

is u

nder

st

ress

. D

o no

t ap

ply

whe

n th

e da

ytim

e te

mpe

ratu

re

is

ex­

pect

ed t

o ex

ceed

90

°F w

ithi

n th

e ne

xt 3

day

s.

Do

not

appl

y if

te

mpe

ratu

re

is

expe

cted

to

fa

ll

belo

w

40

°F

shor

tly

afte

r tr

eatm

ent.

Qua

ckgr

ass

pron

amid

e (K

erb)

V

k 31

b A

pply

in

la

te

fall

w

hen

soil

te

mpe

ratu

res

are

belo

w

60

° F

. F

or l

ight

to

mod

erat

e qu

ackg

rass

in

fest

atio

ns,

rate

ca

n be

re

duce

d to

1

lb a

.i./

acre

(2

lb

/acr

e of

fo

rmul

ated

p

rod

uct

).

Page 41: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Bird

sfoo

t Tr

efoi

l (E

stab

lishe

d S

tand

) H

oary

aly

ssum

A

nnua

l br

oadl

eave

s 4-

(2,4

-DB

) am

ine

(But

oxon

e 20

0 or

B

utyr

ac

200)

2q

t E

arly

Apr

il.

Spr

ay w

hen

hoar

y al

yssu

m s

eedl

ings

are

tw

o to

fou

r le

af

stag

e.

Do

not

graz

e or

fee

d ha

y fr

om f

orag

e fo

r 6

0 da

ys

afte

r ap

plic

atio

n.

Do

not

appl

y w

hen

crop

is

unde

r st

ress

. D

o no

t ap

ply

whe

n th

e da

ytim

e te

mpe

ratu

re

is

ex­

pec

ted

to e

xcee

d 9

0°F

wit

hin

the

next

3 d

ays.

D

o no

t ap

ply

if

tem

pera

ture

is

ex

pect

ed

to

fall

belo

w

40

°F

shor

tly

afte

r tr

eatm

ent.

Qua

ckgr

ass

pron

amid

e (K

erb)

1%

3

1b

App

ly

in

late

fa

ll

whe

n so

il

tem

pera

ture

s ar

e be

low

60

° F.

F

or l

ight

to

mod

erat

e qu

ackg

rass

in

fest

atio

ns,

rate

ca

n b

e re

duce

d to

1

lb a

.i./

acre

(2

lb

/acr

e of

fo

rmul

ated

p

rod

uct

).

Yel

low

roc

ket

and

broa

d-le

aved

win

ter

annu

als

MC

PA

Red

Clo

ver

(cur

rent

yea

r se

edin

g)

%

ipt

Spr

ay a

fter

kil

ling

fro

st;

legu

mes

do

rman

t.

Bie

nnia

ls a

nd

Per

enni

als

2,4-

D

este

r

Gra

ss P

astu

re

Iqt

— A

pply

in

fal

l or

spr

ing.

Per

enni

als

2,4-

D e

ster

Legu

me

Pas

ture

1

Iqt

— L

egum

es m

ay b

e in

jure

d or

kil

led.

Spo

t sp

ray

patc

hes.

Ann

ual

broa

dlea

ves

(inc

ludi

ng n

ight

shad

e)

Ann

ual

gras

ses

alac

hlor

(L

asso

) or

m

etol

achl

or

(Dua

l)

+ ch

lora

mbe

n (A

mib

en)

WEE

D CO

NTRO

L G

UID

E FO

R FI

ELD

BEAN

S

Pre

plan

t 2q

t

Iqt

+ 2 +

4 q

t 2L

or

2%

lb

75

% D

S

— C

heck

la

bel

for

use

on

coar

se-t

extu

red

soil

s lo

w

in

orga

nic

mat

ter.

Thi

s tr

eatm

ent

is u

sed

for

blac

k ni

ghts

hade

co

ntro

l.

— L

asso

or

D

ual

mus

t be

ap

plie

d pr

epla

nt

inco

rpor

ated

to

min

imiz

e da

nger

of

bea

n in

jury

. —

Am

iben

m

ay b

e ap

plie

d pr

epla

nt

inco

rpor

ated

or

pr

e-em

erge

nce.

Las

so w

ill

prov

ide

bett

er n

ight

shad

e co

ntro

l th

an

Dua

l. D

ual

wil

l pr

ovid

e ye

llow

nut

sedg

e su

ppre

ssio

n.

Page 42: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

FIE

LD B

EA

NS

— P

repl

ant-

Pre

emer

genc

e (C

ontin

ued)

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.i.

2%

+ %

or

%

2%

+ 2 + Vi or

%

For

mul

atio

n/A

1% q

t

+ lp

t or

l%p

t

1% q

t

+ 4

qt2

L

or

2% l

b 75

% D

S +

lpt or

l%p

t

Rem

ark

s an

d L

imit

atio

ns

Ann

ual

broa

dlea

ves

(exc

ept

nigh

tsha

de)

Ann

ual

gras

ses

EP

TC

(E

ptam

or

G

enep

) +

trif

lura

lin

(Tre

flan

) or

pe

ndim

etha

lin

(Pro

wl)

Inco

rpor

ate

imm

edia

tely

aft

er

appl

icat

ion.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

EP

TC

(E

ptam

or

G

enep

) +

chlo

ram

ben

(Am

iben

) +

trif

lura

lin

(Tre

flan

) or

pe

ndim

etha

lin

(Pro

wl)

Inco

rpor

ate

imm

edia

tely

af

ter

appl

icat

ion.

R

ainf

all

isn'

t as

cr

itic

al

for

acti

vati

on

of

Am

iben

as

w

hen

it i

s su

rfac

e ap

plie

d.

Pro

vide

s so

me

nigh

tsha

de

cont

rol.

Nig

htsh

ade

cont

rol

is i

mpr

oved

whe

n A

mib

en

is a

ppli

ed

as a

pre

emer

genc

e ov

erla

y (s

ee

bel

ow

).

to

Pre

plan

t In

corp

orat

ed

Ann

ual

broa

dlea

ves

(inc

ludi

ng n

ight

shad

e)

Ann

ual

gras

ses

Pre

plan

t Fo

llow

ed b

y P

reem

erge

nce

EP

TC

(E

ptam

or

G

enep

) +

trif

lura

lin

(Tre

flan

) or

pe

ndim

etha

lin

(Pro

wl)

2%

+ or

%

VA

q

t

+ lp

t or

l%p

t

— P

RE

PL

AN

T.

— I

ncor

pora

te

imm

edia

tely

af

ter

appl

icat

ion.

Fol

low

w

ith

pree

mer

genc

e tr

eatm

ent

for

com

plet

e co

ntro

l.

FO

LL

OW

ED

BY

: P

reem

erge

nce

chlo

ram

ben

(Am

iben

)

dino

seb

(Pre

mer

ge)

or

chlo

ram

ben

(Am

iben

)

+ di

nose

b (P

rem

erge

)

or

4%

or

1 + 3

4q

t2L

or

2%

lb

75

% D

S or

6q

t or

2 q

t 2L

or

l%

lb7

5%

DS

+

4q

t

Eff

ecti

vene

ss

depe

nds

on a

dequ

ate

rain

fall

af

ter

trea

t­m

ent.

Page 43: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Ann

ual

broa

dlea

ves

bent

azon

(B

asag

ran)

+ cr

op o

il c

once

ntra

te

Pos

tem

erge

nce

%

i%p

t

+ +

1

qt

1 q

t

— C

ontr

ols

only

cer

tain

bro

adle

aves

. S

ee l

abel

an

d p

ost-

emer

genc

e so

ybea

n se

ctio

n.

— C

heck

lab

el f

or s

peci

fic

rate

an

d p

rope

r w

eed

grow

th

stag

e.

— B

eans

mus

t h

ave

1 to

2 t

rifo

liate

lea

ves

befo

re a

ppli

ca­

tion

. N

uts

edge

C

anad

a th

istl

e be

ntaz

on

(Bas

agra

n)

+ cr

op o

il c

once

ntra

te

% +

%

+ 1 q

t +

1 q

t

1%

pt+

l%

pt

+ 1

qt

+

1 q

t

— S

ee r

emar

ks f

or n

utse

dge

cont

rol

unde

r so

ybea

ns.

— B

eans

mus

t ha

ve 1

to

2 tr

ifol

iate

lea

ves

befo

re a

ppli

ca­

tion

.

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

CO

chlo

ram

ben

(Am

iben

)

+ tr

iflur

alin

(T

refl

an)

or

pend

imet

hali

n (P

row

l)

WEE

D CO

NTRO

L G

UIDE

FOR

SUN

FLOW

ERS

Prep

lant

2

1 ga

l 2L

+ %

or

1

or

2%

lb 7

5%

DS

+ 1%

p

t

or

2p

t

— I

ncor

pora

te o

r m

ix T

refl

an

thor

ough

ly i

nto

top

2 or

3 i

n.

of

soil

wit

hin

24

hour

s af

ter

appl

icat

ion.

P

row

l in

cor­

pora

tion

m

ay b

e de

laye

d 7

days

. —

On

lig

ht s

oils

(s

andy

an

d sa

ndy

loam

) lo

w i

n o

rgan

ic

mat

ter

use

Vz

lb T

refl

an o

r %

lb

Pro

wl.

— U

se 6

qt

of A

mib

en

for

heav

y ra

gwee

d,

mus

tard

, or

ni

ghts

hade

po

pula

tion

s.

chlo

ram

ben

(Am

iben

)

+ al

achl

or

(Las

so)

2 + 2%

1 g

al 2

L

or

2%

lb 7

5%

DS

+ 2

%q

t

— M

ay b

e ap

plie

d ei

ther

pr

epla

nt

inco

rpor

ated

or

pre

-em

erge

nce.

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

(exc

ept

ragw

eed

, sm

art-

wee

d, m

usta

rd a

nd

nig

ht­

shad

e)

trif

lura

lin

(Tre

flan

) or

pe

ndim

etha

lin

(Pro

wl)

or

1

1%

pt

or

2p

t

— I

ncor

pora

te

Tre

flan

w

ithi

n 2

4 ho

urs

or

Pro

wl

wit

hin

7 da

ys

into

to

p 2

or 3

in.

of

soil

. —

On

ligh

t so

ils

(san

dy

and

sand

y lo

am)

low

in

orga

nic

mat

ter

use

V2

lb T

refl

an

or %

lb

Pro

wl.

Page 44: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SU

NFL

OW

ER

— P

reem

erge

nce

(Con

tinue

d)

We

ed

Con

trol

led

Her

bic

ide

Rat

e lb

/A

a.i.

F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

chlo

ram

ben

(Am

iben

)

chlo

ram

ben

(Am

iben

)

+ al

achl

or

(Las

so)

Pre

emer

genc

e 2

1 ga

l 2

L

+ 2%

or

2%

lb 7

5%

DS

Do

not

graz

e or

fee

d su

nflo

wer

fo

rage

fr

om

Am

iben

-tr

eate

d ar

eas.

A

mib

en

may

fo

llow

pr

epla

nt

trea

tmen

ts

of

Tre

flan

or

P

row

l. U

se

6 q

t of

A

mib

en

for

heav

y ra

gwee

d,

mus

tard

, or

ni

ghts

hade

po

pula

tion

s.

1 ga

l 2

L

or

2%

lb 7

5%

DS

+ 2%

q

t

May

be

ap

plie

d ei

ther

pr

epla

nt

inco

rpor

ated

or

pr

e­em

erge

nce.

Qua

ckgr

ass

fc

dala

pon

(Dow

pon

M)

WEE

D CO

NTRO

L G

UID

E FO

R PO

TATO

ES

10

13%

lb

Spr

ay i

n sp

ring

wh

en q

uack

gras

s is

4 t

o 6

in.

tall

. W

ait

one

wee

k be

fore

pl

owin

g.

— U

se i

n 30

to

40

gal

wat

er p

er a

cre.

Con

trol

of

qu

ackg

rass

w

ill

be

redu

ced

wh

en

heav

y st

and

of r

ye c

over

is

pres

ent.

glyp

hosa

te

(Rou

ndup

) 1%

Rem

ark

s an

d L

imit

atio

ns

2q

t

—H

eavy

sta

nd o

f ry

e co

ver

may

red

uce

quac

kgra

ss c

ontr

ol.

— R

ound

up

rate

of

1 q

t m

ay

be

used

fo

r si

ngle

se

ason

qu

ackg

rass

con

trol

. A

pply

1

qt

in 5

-10

gal

wat

er

per

acre

wit

h 0

.5%

non

ioni

c su

rfac

tant

.

— A

pply

to

acti

vely

gro

win

g qu

ackg

rass

at

leas

t 8

in.

tall

. —

Use

15

to 2

0 ga

l w

ater

per

acr

e.

— N

o so

il re

sidu

e.

— C

an p

low

or

till

3 d

ays

afte

r ap

plic

atio

n an

d pl

ant

crop

. —

Do

not

plow

or

till

pri

or t

o tr

eatm

ent.

Em

erge

d po

tato

es a

re v

ery

sens

itiv

e to

Rou

ndup

da

age.

D

o no

t us

e ne

ar

grow

ing

pota

to

plan

ts.

Pre

plan

t In

corp

orat

ed

Ann

ual

gras

ses

Ann

ual

broa

dlea

ves

FO

LL

OW

ED

BY

: D

elay

ed

Pre

emer

genc

e

Pre

plan

t Fo

llow

ed b

y D

elay

ed P

reem

erge

nce

EP

TC

(E

ptam

or

G

enep

) 4

%p

t —

Wor

k in

to s

oil

imm

edia

tely

aft

er

appl

icat

ion.

Six

lb

per

acre

may

be

used

if

nuts

edge

is

a pr

oble

m.

— P

repl

ant

inco

rpor

ated

.

linu

ron

(Lor

ox

or

Lin

ex)

or

met

ribu

zin

(Lex

eme

or

Senc

or)

or

2 lb

50

W

or

lqt4

L

or

llb

50

W

or

1 p

t 4

L

or

% l

b 7

5%

DF

— T

reat

men

t sh

ould

b

e m

ade

prio

r to

pot

ato

emer

genc

e an

d af

ter

wee

d em

erge

nce.

Do

not

appl

y Se

ncor

to

Atl

anti

c va

riet

y.

Page 45: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Ear

ly

Pre

emer

genc

e E

arly

Pre

emer

genc

e Fo

llow

ed b

y D

elay

ed P

reem

erge

nce

Ann

ual

gras

ses

(esp

ecia

lly

barn

yard

-gr

ass)

A

nnua

l br

oadl

eave

s

FO

LL

OW

ED

BY

: D

elay

ed

Pre

emer

genc

e

alac

hlor

(L

asso

) or

pe

ndim

etha

lin

(Pro

wl)

or

m

etol

achl

or

(Dua

l)

met

ribu

zin

(Lex

one

or

Senc

or)

or

linu

ron

(Lor

ox

or

Lin

ex)

or

dino

seb

(Pre

mer

ge)

2 or

X or

2 Vz

or

1 or

3

2q

t or

lfcp

t

or

2p

t

1 lb

50

W

or

lpt4

L

or

% l

b 7

5%

DF

or

2 lb

50W

or

lq

t4L

or

4

qt

— I

f fi

eld

leve

ling

is

nece

ssar

y it

sho

uld

be

done

soo

n af

ter

plan

ting

. —

App

ly e

arly

pre

emer

genc

e—m

ake

appl

icat

ion

soon

aft

er

plan

ting

. —

Mos

t ef

fect

ive

on

germ

inat

ing

gras

ses

that

h

ave

not

emer

ged.

Do

not

use

Pro

wl

on

muc

k so

ils o

r lo

amy

sand

s w

ith

less

th

an 1

.555

org

anic

mat

ter.

Fol

low

w

ith

Lex

one

or

Senc

or

or

Lor

ox

or

Pre

mer

ge.

— M

ost

effe

ctiv

e on

sm

all

emer

ged

wee

ds.

— D

elay

ed

pree

mer

genc

e.

— T

hese

tr

eatm

ents

fo

llow

L

asso

or

P

row

l or

D

ual

pre­

emer

genc

e.

— D

o no

t ap

ply

Senc

or

to A

tlan

tic

vari

ety.

Ann

ual

broa

dlea

ves

linu

ron

(Lor

ox

or

Lin

ex)

Del

ayed

Pre

emer

genc

e 1%

3

1b

50

W

or

l%q

t4L

App

ly d

elay

ed

pree

mer

genc

e;

afte

r w

eeds

em

erge

bu

t be

fore

po

tato

es

emer

ge.

If

fiel

d le

veli

ng

is

nece

ssar

y,

it

shou

ld

be

done

so

on

afte

r pl

anti

ng t

o al

low

wee

d em

erge

nce

befo

re s

pray

ing.

met

ribu

zin

(Lex

one

or

Senc

or)

%

1 lb

50

W

or

lpt4

L

or

% l

b 7

5%

DF

Ref

er t

o re

mar

ks u

nd

er

Lor

ox.

Use

u

p to

1

lb

acti

ve

ingr

edie

nt

met

ribu

zin

on

high

or

gani

c m

uck

soil

. - D

o no

t ap

ply

Senc

or

to A

tlan

tic

vari

ety.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

met

ribu

zin

(Lex

one

or

Senc

or)

Pos

tem

erge

nce

%lb

50

W

or

%p

t4L

or

%

lb

75

% D

F

— D

o no

t m

ake

over

all

post

emer

genc

e ap

plic

atio

ns f

ollo

ing

3 da

ys o

f co

ol,

wet

or

clou

dy w

eath

er a

s cr

op i

njur

y m

ay o

ccur

. —

Do

not

use

on e

arly

mat

urin

g va

riet

ies.

Do

not

use

on r

ed s

kin

vari

etie

s.

— D

o no

t ap

ply

post

emer

genc

e w

ithi

n 6

0 da

ys o

f ha

rves

t.

— G

reat

er p

ossi

bili

ty

of i

njur

y to

pot

atoe

s w

hen

spra

yed

over

all

at 1

2- t

o 15

-in.

sta

ges.

Page 46: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

WEE

D C

ONT

ROL

GU

IDE

FOR

MIN

T R

ow M

int

and

Mea

dow

M

int

Wee

d C

ontr

olle

d H

erb

icid

e R

ate

lb/A

a.

i. F

orm

ula

tio

n/A

R

emar

ks

and

Lim

itat

ion

s

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

terb

acil

(S

inba

r)

1%

21

b —

App

ly

pree

mer

genc

e on

ly.

— R

ates

may

be

redu

ced

to

1 lb

per

ac

re i

f te

rbac

il

was

us

ed t

he p

revi

ous

year

. —

Do

not

plan

t an

y ot

her

crop

ex

cept

po

tato

es

for

two

year

s fo

llow

ing

appl

icat

ion.

A

nnua

l br

oadl

eave

s (S

ee l

abel

for

sp

ecif

ic

spec

ies)

bent

azon

(B

asag

ran)

+

crop

oil

conc

entr

atio

n + lq

t

lqt +

lqt

— P

oste

mer

genc

e ap

plic

atio

n.

— C

ontr

ols

only

cer

tain

br

oadl

eave

s.

— U

se a

min

imum

of

40

psi

and

20 g

al/A

of

wat

er.

— D

o no

t us

e fl

ood

nozz

les.

Che

ck l

abel

for

pro

per

wee

d st

age

for

appl

icat

ions

. —

Wea

k on

pig

wee

d, n

ight

shad

e an

d la

mbs

quar

ters

. N

utse

dge

Can

ada

this

tle

4^

OS

bent

azon

+

crop

oil

con

cent

rati

on

%

+

%

% q

t +

%

qt

— P

oste

mer

genc

e ap

plic

atio

n.

+

+

+

+

— S

ee "

Rem

arks

" un

der

nuts

edge

co

ntro

l in

soy

bean

se

c-1

qt +

1

qt

1 q

t +

1

qt

tion

(P

age

17

).

bent

azon

+

crop

oil

con

cent

rati

on

2 +

2

2 q

t +

2

qt

— P

oste

mer

genc

e ap

plic

atio

n.

+

+

+

+"

— T

wo

appl

icat

ions

req

uire

d fo

r be

st t

hist

le c

ontr

ol.

1 q

t +

1

qt

1 q

t +

1

qt

— M

ake

firs

t ap

plic

atio

n w

hen

thi

stle

is

8 in

ches

tal

l an

d se

cond

app

lica

tion

7

to

10 d

ays

late

r.

— U

se a

min

imum

of

40

psi

and

20 g

al/A

of

wat

er.

Do

not

use

floo

d no

zzle

s.

Ann

ual

gras

ses

WEE

D C

ONT

ROL

GU

IDE

FOR

SUG

AR B

EETS

P

repl

ant

cycl

oate

(R

o-N

eet)

3

1b

2q

t In

corp

orat

e im

med

iate

ly t

o 2

to 3

in.

M

ust

be f

ollo

wed

pr

eem

erge

nce

by

Pyr

amin

. In

jury

may

occ

ur w

hen

Bet

anal

an

d B

etan

ex

are

appl

ied

post

emer

genc

e.

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

etho

fum

esat

e (N

ortr

on)

+ py

razo

n (P

yram

in)

+ T

CA

(T

CA

)

Pre

emer

genc

e 2

5%

qt

1.5

lb/g

al E

.C.

or

2 q

t 4

lb/g

al L

+ +

3 3

qt

+ +

6 5

qt

Soy

bean

s or

alf

alfa

m

ay b

e in

jure

d fo

llow

ing

Nor

tron

. O

n sa

ndy

soil

wit

h le

ss

than

1

%%

or

gani

c m

atte

r re

­du

ce N

ortr

on

rate

to

\Vi

lb/A

ai.

In o

rder

to

get

near

100

% w

eed

cont

rol

it w

ill,

in m

ost

case

s, b

e ne

cess

ary

to f

ollo

w u

p w

ith

a po

stem

erge

nce

appl

icat

ion.

pyra

zon

(Pyr

amin

) +

TC

A

(TC

A)

+ 6

4q

t + 5

qt

— T

CA

sho

uld

be i

nclu

ded

even

if

gras

ses

aren

't a

pro

b­le

m,

as b

ette

r co

ntro

l of

ann

ual

broa

dlea

ves

wil

l re

sult

. —

In

orde

r to

get

nea

r 10

0% w

eed

cont

rol

it w

ill,

in m

ost

case

s, b

e ne

cess

ary

to f

ollo

w u

p w

ith

a po

stem

erge

nce

appl

icat

ion.

Page 47: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

(con

tinu

ed)

PY

RA

MIN

+

T

CA

(c

onti

nued

)

pyra

zon

(Pyr

amin

) +

diet

haty

leth

yl

(Ant

or)

pyra

zon

(Pyr

amin

) +

etho

fum

esat

e (N

ortr

on)

+ di

etha

tyle

thyl

(A

ntor

)

+ 3

For

soi

ls h

igh

in c

lay

cont

ent

or o

rgan

ic m

atte

r, t

he r

ate

shou

ld b

e 4

lb P

yram

in

+

8 lb

T

CA

. •

For

so

ils

low

in

clay

and

or

gani

c m

atte

r th

e P

yram

in

rate

may

be

redu

ced

to 3

qt.

4q

t + 3

qt

— S

ee r

emar

ks f

or

Pyr

amin

+

T

CA

.

3q

t —

See

rem

arks

for

Pyr

amin

+

Nor

tron

+

T

CA

.

+ 2 + 2

+ 5%

qt

1.5

lb/g

al E

.C.

or

2q

t41

b/g

alL

+ 2

qt

Ann

ual

broa

dlea

ves

(inc

ludi

ng s

mar

twee

d)

desm

edip

ham

+

phen

med

i-ph

am

(Bet

amix

)

+ en

doth

all

(H27

3)

1 + %

Pos

tem

erge

nce

6.2

pt

+ 1%

pt

Add

one

qt.

oil

con

e, p

er a

cre

for

hard

to

cont

rol

larg

e w

eeds

or

if p

lant

s ar

e no

t vi

goro

usly

gr

owin

g.

- A

pply

whe

n th

e be

ets

are

in t

he 2

-4 t

rue

leaf

sta

ge.

- Wh

en

cult

ivat

ing

the

unsp

raye

d ar

ea,

care

sh

ould

be

ta

ken

so a

s to

cut

aw

ay a

por

tion

of

the

spr

ayed

ar

ea

on

the

firs

t cu

ltiv

atio

n an

d do

n't

roll

fr

esh

unsp

raye

d so

il ba

ck b

eyon

d th

e cu

t aw

ay p

oint

. -W

hen

te

mpe

ratu

re

is

75°

F or

gr

eate

r,

appl

y in

la

te

afte

rnoo

n or

ear

ly

even

ing.

-

Do

not

appl

y w

hen

plan

ts a

re u

nder

str

ess

such

as

tem

­pe

ratu

res

abov

e 85

° F

as i

njur

y m

ay o

ccur

. de

smed

ipha

m

(Bet

anex

)

+ en

doth

all

(H27

3)

etho

fum

esat

e (N

ortr

on)

+ de

smed

ipha

m +

ph

enm

edi-

pham

(B

etam

ix)

+ en

doth

all

(H27

3)

1 + %

%

+ 1 + %

6.2

pt

+ l%

pt

4 p

t 1.

5 lb

/gal

E.C

. or

l%

pt

4 lb

/gal

L

+ 6.

2 p

t

+ l%

pt

Ref

er t

o re

mar

ks u

nder

Bet

amix

+

H

273.

M

ore

effe

ctiv

e pi

gwee

d co

ntro

l.

Pro

vide

s fu

ll se

ason

wee

d co

ntro

l.

- R

efer

to

rem

arks

und

er B

etam

ix

+

H27

3.

• Do

not

use

oil

conc

entr

ate.

Page 48: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

SU

GA

R B

EE

TS —

Pos

tem

erge

nce

(Con

tinue

d)

Wee

d C

ontr

olle

d H

erbi

cide

R

ate

lb/A

a.i.

F

orm

ulat

ion/

A

Rem

arks

and

Lim

itat

ions

etho

fum

esat

e (N

ortr

on)

+ de

smed

ipha

m

(Bet

anex

) +

endo

thal

(H

273)

pyra

zon

(Pyr

amin

) +

desm

edip

ham

+ p

henm

edi-

pham

(B

etam

ix)

%

+ 1 + %

2 + 1

4 pt

1.5

lb/

gal

E.C

. or

l%

pt

4 lb

/gal

L

+ 6.

2 pt

+ l%

pt

Prov

ides

ful

l se

ason

wee

d co

ntro

l. R

efer

to

rem

arks

und

er B

etan

ex +

H

273.

D

o no

t us

e oi

l co

ncen

trat

e.

Ann

ual

broa

dlea

ves

(exc

ept

smar

twee

d)

2q

t + 6.

2 pt

App

ly w

hen

the

beet

s ar

e in

the

2-4

tru

e le

af s

tage

. W

hen

culti

vatin

g th

e un

spra

yed

area

, ca

re s

houl

d be

ta

ken

so a

s to

cut

aw

ay a

por

tion

of t

he s

pray

ed a

rea

on t

he f

irst

cul

tivat

ion

and

don'

t ro

ll fr

esh

unsp

raye

d so

il ba

ck b

eyon

d th

e cu

t aw

ay p

oint

. M

axim

um t

otal

am

ount

of

pyra

zon

that

can

be

used

for

be

ets

grow

n an

d pr

oces

sed

in M

ichi

gan

is 8

lb

per

acre

(2

lb

on a

7-i

n. b

and)

. W

hen

tem

pera

ture

is

75°

F or

gre

ater

, ap

ply

in l

ate

afte

rnoo

n or

ear

ly e

veni

ng.

Do

not

appl

y w

hen

plan

ts a

re u

nder

str

ess

such

as

tem

­pe

ratu

res

abov

e 85

° F

as i

njur

y m

ay o

ccur

. A

dd o

ne q

t. oi

l co

ncen

trat

e pe

r ac

re f

or h

ard

to c

ontr

ol

larg

e w

eeds

or

if pl

ants

are

not

vig

orou

sly

grow

ing.

Muc

h be

tter

pig

wee

d co

ntro

l th

an

Bet

amix

. R

efer

to

rem

arks

und

er P

yram

in +

Bet

amix

. py

razo

n (P

yram

in)

+ de

smed

ipha

m

(Bet

anex

)

+ 1

2q

t + 6.2

pt

Ref

er t

o re

mar

ks u

nder

Pyr

amin

+ B

etam

ix.

Ann

ual

broa

dlea

ves

(exc

ept

smar

twee

d an

d w

ild

buck

whe

at)

pyra

zon

(Pyr

amin

) +

dala

pon

(Dow

pon

M)

+ cr

op o

il em

ulsi

fiabl

e co

ncen

trat

e

+ 1 + lqt

2q

t + 1%

lb

+ lqt

Smar

twee

d an

d bu

ckw

heat

en

doth

all

(H27

3)

%

l%p

t T

his

herb

icid

e ca

n be

add

ed t

o an

y of

the

abo

ve p

ost-

emer

genc

e tr

eatm

ents

to im

prov

e co

ntro

l of t

hese

spec

ies.

V

olum

e ba

sed

on 3

lb

per

gal

form

ulat

ion.

Page 49: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Ann

ual

gras

ses

Vol

unte

er

corn

se

thox

ydim

(T

oast

)

+ cr

op o

il c

once

ntra

te

0.19

+ 1 qt

lpt +

lqt

Use

W*

pt

per

acr

e T

oast

fo

r vo

lunt

eer

corn

. N

o so

il ac

tivi

ty f

rom

T

oast

. C

ontr

ols

only

gra

sses

pre

s­en

t w

hen

spra

yed.

•T

reat

ac

tive

ly

grow

ing

gras

s u

p to

max

imum

of

4 i

n.

tall

(s

ee l

abel

) or

vol

unte

er

corn

18

in

. ta

ll.

• U

se a

min

imum

of

5 g

al/A

wat

er a

nd

40

psi

for

Toa

st.

• A

void

dri

ft

onto

cor

n, s

orgh

um,

smal

l gr

ains

or

turf

. • R

ainf

all

wit

hin

on

e ho

ur

of

appl

icat

ion

wil

l re

duce

co

ntro

l. • D

oes

no

t co

ntro

l nu

tsed

ge.

Qua

ckgr

ass

seth

oxyd

im

(Toa

st)

+ cr

op o

il c

once

ntra

te

0.48

-f

0.29

+ 1 qt

+

1 q

t

2V

2p

t+

lV2p

t

+ 1

qt

-f

1 qt

TW

O

AP

PL

ICA

TIO

NS

AR

E

NE

ED

ED

F

OR

B

ES

T

QU

AC

KG

RA

SS

CO

NT

RO

L.

MA

KE

S

EC

ON

D

AP

­P

LIC

AT

ION

14

-21

DA

YS

FO

LL

OW

ING

IN

ITIA

L

TR

EA

TM

EN

T.

CU

LT

IVA

TIO

N

MA

Y

RE

PL

AC

E

SE

CO

ND

A

PP

LIC

AT

ION

. N

o so

il ac

tivi

ty f

rom

Toa

st.

Con

trol

s on

ly g

rass

pre

sent

w

hen

spra

yed.

T

reat

ac

tive

ly

grow

ing

quac

kgra

ss

6-8

in.

tall

. U

se a

min

imum

of

5 g

al/A

wat

er

and

40

psi

for

T

oast

ap

plic

atio

n.

Avo

id d

rift

on

to c

orn,

sor

ghum

, sm

all

grai

ns o

r tu

rf.

- Rai

nfal

l w

ithi

n o

ne

hour

of

ap

plic

atio

n w

ill

redu

ce

cont

rol.

Add

itio

n of

oth

er h

erbi

cide

s to

tan

k m

ay r

educ

e qu

ack­

gras

s co

ntro

l.

WEE

D C

ONT

ROL

GU

IDE

FOR

GR

AIN

SO

RG

HU

M

Pre

emer

genc

e

Ann

ual

broa

dlea

ves

Ann

ual

gras

ses

prop

azin

e (M

ilog

ard)

2%

lb

80

W

or

2q

t4L

or

2.

2 lb

90%

WD

G

Do

not

use

on

sand

y so

ils.

D

o n

ot p

lant

sm

all

grai

ns,

smal

l se

eded

for

ages

, su

gar

beet

s, f

ield

bea

ns o

r ve

geta

ble

cro

ps t

he

foll

owin

g ye

ar.

atra

zine

(c

omm

erci

al p

rodu

ct)

+ pr

opac

hlor

(R

amro

d)

+ 3

iy4lb

80

W

or

lqt4

L

or

1.1

lb 9

0% W

DG

+

4%

lb (

65

% W

P)

Do

no

t fe

ed

sila

ge m

ade

from

tr

eate

d so

rghu

m t

o pr

o­du

cing

dai

ry

anim

als.

A

com

mer

cial

mix

of

Ram

rod

plus

atr

azin

e is

ava

ilab

le.

Not

la

bele

d fo

r fo

rage

so

rghu

m.

Page 50: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

GR

AIN

SO

RG

HU

M —

Pos

tem

erge

nce

(Con

tinue

d)

We

ed

Con

trol

led

Her

bic

ide

Rat

e lb

/A

a.i.

Fo

rmu

lati

on

/A

Rem

ark

s an

d L

imit

atio

ns

Ann

ual

broa

dlea

ves

Pos

tem

erge

nce

2,4-

D

amin

e %

qt

App

ly w

hen

sorg

hum

is

6 to

12

in.

high

. D

o no

t us

e un

less

wee

ds a

re a

ser

ious

pro

blem

be

caus

e in

jury

m

ay

occu

r.

Not

la

bele

d fo

r fo

rage

so

rghu

m.

Hyb

rids

var

y in

tol

eran

ce.

ox

o

TABL

E 2—

PER

ENN

IAL

WEE

DS N

ON-S

ELEC

TIVE

CON

TROL

Q

uack

gras

s (f

or s

prin

g se

eded

cro

ps]

dala

pon

(Dow

pon

M)

15

201b

App

ly i

n fa

ll.

— F

all

plow

7 t

o 10

day

s af

ter

spra

ying

if

poss

ible

. —

Lan

d ca

n be

pla

nted

to

spri

ng s

own

crop

s.

— U

se 3

0 to

40

gal

wat

er p

er a

cre.

For

qua

ckgr

ass

cont

rol

in c

orn,

pot

atoe

s an

d su

gar

beet

s,

see

spec

ific

cro

p.

Qua

ckgr

ass

(for

fal

l se

eded

cr

ops)

da

lapo

n (D

owpo

n M

) 10

13

%

lb

— A

pply

in

spri

ng o

r ea

rly

sum

mer

(p

rior

to

July

).

— P

low

7 t

o 10

day

s af

ter

spra

ying

. —

Lan

d ca

n be

pla

nted

to

alfa

lfa,

w

heat

or

win

ter

barl

ey.

— U

se 3

0 to

40

gal

wat

er p

er a

cre.

Q

uack

gras

s (p

rior

to

corn

, so

ybea

ns,

whe

at,

barl

ey,

oats

, so

r­gh

um,

fiel

d be

ans,

fo

r­ag

es,

pota

toes

, or

fol

low

­in

g sm

all

grai

ns o

r si

lage

co

rn i

n th

e fa

ll)

glyp

hosa

te

(Rou

ndup

) 1%

2

qt

App

ly t

o ac

tive

ly g

row

ing

quac

kgra

ss a

t le

ast

8 in

. ta

ll.

— U

se

15 t

o 20

ga

l w

ater

pe

r ac

re.

— N

o so

il re

sidu

e.

— C

an p

low

or

till

3 d

ays

afte

r ap

plic

atio

n an

d pl

ant

crop

. —

Do

not

plow

or

till

pri

or t

o tr

eatm

ent.

Rou

ndup

ra

te

of

1 qt

m

ay

be

used

fo

r si

ngle

se

ason

qu

ackg

rass

co

ntro

l.

App

ly

1 q

t in

5-

10

gal

wat

er

per

acre

w

ith

0.5

%

noni

onic

su

rfac

tant

. T

his

trea

tmen

t is

le

ss

effe

ctiv

e on

an

un

dist

urbe

d qu

ackg

rass

so

d.

Can

ada

this

tle

(pri

or t

o co

rn,

soyb

eans

, w

heat

, ba

rley

, oa

ts,

sor­

ghum

, fi

eld

bean

s,

for­

ages

, po

tato

es,

or f

ollo

ing

smal

l gr

ains

in

th

e fa

ll)

glyp

hosa

te

(Rou

ndup

) 2%

3

qt

— A

pply

whe

n th

istl

e is

at

bud

stag

e or

bey

ond.

Do

not

plow

or

till

pri

or t

o tr

eatm

ent.

Poo

r co

ntro

l w

ill

resu

lt

if

appl

icat

ion

is m

ade

duri

ng

tim

es o

f po

or g

row

ing

cond

itio

ns.

— C

an p

low

or

till

3 d

ays

afte

r ap

plic

atio

n an

d pl

ant

crop

.

Fie

ld

bind

wee

d (p

rior

to

corn

, so

ybea

ns,

whe

at,

barl

ey,

oats

, so

r­gh

um,

fiel

d be

ans,

fo

r­ag

es,

pota

toes

, or

fol

low

­in

g sm

all

grai

ns o

r si

lage

co

rn

in

the

fall

)

glyp

hosa

te

(Rou

ndup

) 2̂

4 3

qt

— A

pply

at

or b

eyon

d fu

ll bl

oom

. —

Do

not

plow

or

till

pri

or t

o tr

eatm

ent.

Poo

r co

ntro

l w

ill

resu

lt

if

appl

icat

ion

is m

ade

duri

ng

tim

es o

f po

or

grow

ing

cond

itio

ns.

— C

an p

low

or

till

7 d

ays

afte

r ap

plic

atio

n an

d pl

ant

crop

.

Page 51: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

Com

mon

m

ilkw

eed

glyp

hosa

te

2%

(p

rior

to

corn

, so

ybea

ns,

(Rou

ndup

) w

heat

, ba

rley

, oa

ts,

sor­

ghum

, fi

eld

bean

s,

for­

ages

, po

tato

es,

or f

ollo

ing

smal

l gr

ains

or

sila

ge

corn

in

the

fall

)

Hem

p do

gban

e gl

ypho

sate

3

(pri

or t

o co

rn,

soyb

eans

, (R

ound

up)

whe

at,

barl

ey,

oats

, so

r­gh

um,

fiel

d be

ans,

fo

r­ag

es,

pota

toes

, or

fol

low

­in

g sm

all

grai

ns

in

the

fall

)

John

song

rass

gl

ypho

sate

2*

A

(pri

or t

o co

rn,

soyb

eans

, (R

ound

up)

whe

at,

barl

ey,

oats

, so

r­gh

um,

fiel

d be

ans,

fo

r­ag

es,

pota

toes

)

Cat

tail

da

lapo

n 15

(D

owpo

n M

) ox

Cat

tail

gl

ypho

sate

3

(Rou

ndup

)

Ree

d ca

nary

gra

ss

glyp

hosa

te

2%

(p

rior

to

co

rn,

soyb

eans

, (R

ound

up)

whe

at,

barl

ey,

oats

, so

r­gh

um,

fiel

d be

ans,

fo

r­ag

es,

pota

toes

)

Poi

son

ivy

amit

role

t 2

Can

ada

this

tle

amit

role

t 4

Hor

se n

ettl

e

3 q

t —

App

ly

whe

n ac

tive

ly

grow

ing

and

mos

t pl

ants

ha

ve

reac

hed

late

bu

d to

fl

ower

st

age.

Spo

t tr

eatm

ent

in l

abel

ed

crop

s.

— R

ope-

wic

k,

wip

e-on

, or

re

circ

ulat

ing

spra

yer

may

be

us

ed i

n so

ybea

ns.

4 qt

App

ly

whe

n ac

tive

ly

grow

ing

and

mos

t pl

ants

ha

ve

reac

hed

late

bu

d to

fl

ower

st

age.

Can

pl

ow

or

till

7 da

ys

afte

r ap

plic

atio

n.

— R

ope-

wic

k,

wip

e-on

, or

re

circ

ulat

ing

spra

yer

may

be

us

ed i

n so

ybea

ns.

(See

L

abel

.)

2 q

t —

App

ly w

hen

acti

vely

gro

win

g w

hen

mos

t pl

ants

ar

e in

th

e bo

ot t

o he

ad s

tage

, at

lea

st 1

8 in

. ta

ll.

— R

ope-

wic

k,

wip

e-on

, or

re

circ

ulat

ing

spra

yer

may

be

us

ed i

n so

ybea

ns.

(See

L

abel

.)

20 l

b —

App

ly i

n Ju

ne o

r Ju

ly.

— U

se 8

0 to

100

gal

w

ater

. —

Kee

p li

vest

ock

out.

4 q

t —

App

lyin

g w

hen

acti

vely

gro

win

g an

d m

ost

plan

ts

have

re

ache

d ea

rly

head

st

age.

3 q

t —

App

ly

whe

n ac

tive

ly

grow

ing

and

mos

t pl

ants

h

ave

reac

hed

the

boot

to

head

st

age.

1 ga

l —

App

ly i

n Ju

ne o

r Ju

ly.

I;

— S

pray

whe

n in

ful

l le

af.

2 ga

l —

App

ly i

n Ju

ne o

r Ju

ly.

— D

o no

t pa

stur

e.

fAm

itro

le

may

not

be

used

on

crop

land

are

as.

Page 52: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

TABLE 3 — WEED RESPONSE TO HERBICIDES IN CORN*

PREPLANT INCORPORATED

ATRAZINE BLADEX DUAL ERADICANE ERADICANE EXTRA GENATE + /SUTAN + LASSO PRINCEP

PREEMERGENCE

ATRAZINE BLADEX DUAL LASSO PRINCEP PROWL RAMROD

POSTEMERGENCE

ATRAZINE - f OIL BANVEL BASAGRAN + OIL BLADEX BUCTRIL/ME-4BR0MINAL.. EVIK1

LINEX/LOROX1

2,4-D AMINE 2,4-D ESTER

3

CD

o o o

F F N P P P N G

F F N N G N N

G G E F G G F F F

ANNUAL BROADLEAVES

• o at a>

c o CO

E ~»

F P N P P P N F

F P N N F N P

G G G P G G F F F

a> t co 3 O* tf>

A

E CO _J

E E P

G G P P E

E E P P E G P

F G G E G G G G G

u co 00

a> • a co •C

sz

z

E G F P P N G E

E G

F G E P N

n G P

G G G

G G G

e o *D a>

a

• a a)

a.

G F G F F P G E

G F G G E F F

E G P F G G G G G

-a a> a>

co OC

E E P F F P P E

E E P P E P P

F G E E G G G G G

a> a»

£ co E </>

G G P F F P P G

G G P P G P P

G E E

G G

G G P P

co 3£ 33 a> > a> >

F P N F F P N F

F P N N F P P

G G G P G

G G F F

k. co

3 E

2

•5

E G P F F P P E

E G P P E P P

F F F G F

G G G G

</» CO

>_ w» • a i _ co >» c &_ co m

G G E E E E E G

G G E E G E G

F N N G N G F N N

ANNUAL GRASSES

in u> CO l _ M

A CO

O

P F E E E E E F

P F E E F E E

p N N F

N G F N N

"co X o

»#-c CO

<3

F F E E E E E F

F F E E F E E

F N N F N G F N N

5 o

c CD CD o

F G E E E E E F

F G E E F E E

G N N G N G F N N

"co X

o s -

o 75 >-

G G E E E E E G

G G E

E G E E

G N N G N G F N N

E 3

' E CO

n.

75 u.

P F E E E E E P

P F E E P E G

p N N F N G F N N

V) (A CO i_ CMS

JC

o 4-» £

P F E E E E G P

P F E

G P E

G

p N N F N G F N N

2 E o </> o a. 2 •f

P F F G G F F P

P F F F P F

p N N F N G F N N

PERENNIALS

S CD

iZ •o CD CD

*o c m

P N N N N N N P

Z Z

"0

Z Z

Z

"0

p F N N P F N p F

CD bo CD

X • o CD CD

5 •o c CO

p N N N N N N P

P N N N P N N

p G N N P F M F G

!c *-> CO

T3 (0

c CO u

F N N N N N N P

F N N N P N N

G F G N P F M F G

CD bo

uack

gras

s

ello

w

nuts

ed

a >-

G F N N N G G G G G P G N G F F

G F N N N F N F F F N N N N

G G N N N G N N N N P F N N N N N N

P = Poor; F = Fair; G = Good; E = Excellent; N None rPost Directed Only *The above ratings are a relative comparison of herbicide effectiveness. Weather conditions greatly influence the herbicide's effective­ness and weed control may be better under favorable conditions or poorer under unfavorable conditions.

52

Page 53: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

TABLE 4 — WEED RESPONSE TO HERBICIDES IN SOYBEANS'

PREPLANT INCORPORATED AMIBEN DUAL LASSO LEXONE/SENCOR PROWL TREFLAN

PREEMERGENCE AMIBEN DUAL DYANAP LASSO LEXONE/SENCOR LINEX/LOROX PREMERGE SURFLAN

POSTEMERGENCE BASAGRAN + OIL BLAZER 2L FUSILADE HOELON POAST

ANNUAL BROADLEAVES

Coc

kleb

ur

Jim

sonw

eed

Lam

bsqu

arte

r

Nig

htsh

ade

(Bla

ck)

Pigw

eed

(Red

root

)

Rag

wee

d

Sm

artw

eed

Vel

vetle

af

Wild

m

usta

rd

P P G G G G G F F N N P F G P P N P N N P G G P P N P G F E N E E E G E N N G P F P P P P N N G N G N P N P

P P G G E E G F F N N P F G P P N P F F G F G G G P G N N P G G P P N P G F E N E E E G E P P G G G G G F G P P G G G E G P G N N G P G P P P P

E G F P P F G G G F G F G E G G F E N N N N N N N N N N N N N N N N N N N N N N N N N N N

ANNUAL GRASSES

Bar

nyar

dgra

ss

Cra

bgra

ss

Gia

nt

foxt

ail

Gre

en

foxt

ail

Yel

low

fo

xtai

l

Fall

pani

cum

Witc

hgra

ss

Wild

pr

oso

mill

et

P P P P P P P P E E E E E E E F E E E E E E E F F F F G G F F P E E E E E E E F E E E E E E E F

F F F F F F F F E E E E E E E F E E E E E E E F F F F F F F ' F P F F F G G F F P F F F F F F F P P P P P P P P P E E E E E E E F

N N N N N N N N N N F N N F N N E E E E E E E E G G G G G G G G E E E E E E E E

PERENNIALS

Bin

dwee

d (F

ield

)

Bin

dwee

d (H

edge

)

Can

ada

this

tle

Gtu

ackg

rass

Yel

low

nu

tsed

ge

N N N N N N N N N G N N N N G N N N N N N N N N N N N N N N

N N N N N N N N N F N N N N N N N N N F N N N N N N N N N N N N N N N N N N N N

N N G N G P P P N N N N N G N N N N N N N N N F N

TABLE 5 — WEED RESPONSE TO HERBICIDES IN FORAGES"

BALAN EPTAM/GENEP KERB LEXONE/SENCOR MCPA PRINCEP SINBAR 2,4-DB

ockl

ebur

o

N P P F U

.O

G P

ANNUAL BROADLEAVES

mso

nwee

d

N P P G F F G P

ambs

quar

ter

ight

shad

e (B

lack

)

_l Z

G N G P P P E N G G E E G G G F

igw

eed

(Red

root

)

agw

eed

mar

twee

d

a. or e/>

G N P F F F P P P E E E

G G G E E G G G G G F P

elve

tleaf

>

N F P E F F G F

'ild

mus

tard

s?

P F P E G F G F

oary

al

lysu

m

X

P F P E G F G G

arny

ardg

rass

m

E E F G N G G N

ANNUAL GRASSES

rabg

rass

o

E E F

N F G N

iant

fox

tail

CD

E E P

N F G N

re e

n fo

xtai

l

C9

E E F E N F G N

ello

w

foxt

ail

>-

E E F E N G G N

all

pani

cum

U-

E E P G N P G N

'itch

gras

s

5=

G E P G N P G N

'ild

pros

o m

illet

s=

P F P

N P P N

indw

eed

(Fie

ld)

m

N N N N P P P P

PERENNIALS

indw

eed

(Hed

ge)

CD

N N N N P P P P

anad

a th

istle

o

N N N N F P F P

uack

gras

s

a

N F G p N P F

N

ello

w

nuts

edge

ande

lion

>• o

P N P N N N P G N P F P P F N N

P = Poor; F = Fair; G = Good; E = Excellent; N None

*The above ratings are a relative comparison of herbicide effectiveness. Weather conditions greatly influence the herbicide's effective­ness and weed control may be better under favorable conditions or poorer under unfavorable conditions.

53

Page 54: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

TABLE 6 — WEED RESPONSE TO HERBICIDES IN FIELD BEANS* ANNUAL BROADLEAVES ANNUAL GRASSES PERENNIALS

PREPLANT INCORPORATED AMIBEN DUAL . . . . . . . . . . . . . . . . . . . EPTAM/GENEP LASSO . . . . . . . . . . . . . . TREFLAN

PREEMERGENCE AMIBEN . . . . . . . . . . . . . . . . . PREMERGE

POSTEMERGENCE BASAGRAN + OIL . . . . . . . .

Coc

kieb

ur

Jim

sonw

eed

Lam

bsqu

arte

r

Nig

htsh

ade

(Bla

ck)

Pig

wee

d (R

edro

ot)

Rag

wee

d

Sm

artw

eed

Vel

vetl

eaf

Wild

mus

tard

P P G G G G G F F N N P F G P P N P P P G P F F F F F N N P G G P P N P N N G N G N P N P

P P G G E E G F F P P G G G E G P G

E G G P P G E G G

Bar

nyar

dgra

ss

Cra

bgra

ss

Gia

nt f

oxta

il

Gre

en f

oxta

il

Yel

low

fox

tail

Fall

pant

cum

Witc

hgra

ss

Wild

pro

so m

illet

P P P P P P P P E E E E E E E F E E E E E E E F E E E E E E E F E E E E E E E F

F F F F F F F F p p p p p p p p

N N N N N N N N

Bin

dwee

d (F

ield

)

Bin

dwee

d (H

edge

)

Can

ada

this

tle

Qua

ckgr

ass

Yel

low

nut

sedg

e

N N N N N N N N N G N N N F P N N N N F N N N N N

N N N N N N N N N N

N N G N G

TABLE 7 — WEED RESPONSE TO HERBICIDES IN POTATOES* ANNUAL BROADLEAVES ANNUAL GRASSES PERENNIALS

PREPLANT INCORPORATED EPTAM/GENEP

PREEMERGENCE DUAL LASSO . . . . . . . . . . . . . . . . . . LEXONE/SENCOR LINEX/LOROX . . . . . . . . . . . . PREMERGE PROWL . . . . . . . . . . . . . . . . . .

POSTEMERGENCE LEXONE/SENCOR . . . . . . . . .

Coc

kieb

ur

Jim

sonw

eed

Lam

bsqu

arte

r

Nig

htsh

ade

(Bla

ck)

Pig

wee

d (R

edro

ot)

Rag

wee

d

Sm

artw

eed

Vel

vetle

af

Wild

mus

tard

P P G P F F F F F

N N P F G P P N P N N P G G P P N P G r t N E E t G t P P G G G G G F G P P G G G E G P G N N G P F P P P P

G F E N E E E 6 E

Bar

nyar

dgra

ss

Cra

bgra

ss

Gia

nt f

oxta

il

Gre

en f

oxta

il

Yel

low

fox

tail

Fall

pani

cum

Witc

hgra

ss

Wild

pro

so m

illet

p p p r p r p r f r f r p

c j r ' F r j p c r c ' c r i r

F F F G G F F P F F F F F F F P p p p p p p p p E E E E E E E F

F F F F F F F P

Bin

dwee

d (

Fie

ld)

Bin

dwee

d (

Hed

ge)

Can

ada

this

tle

Qua

ckgr

ass

Yel

low

nut

sedg

e

N N N F F

N N N N F N N N N P N N N N N N N N N N N N N N N N N N N N

N N N N N

P = Poor; F = Fair; G = Good; E = Excellent; N = None *The above ratings are a relative comparison of herbicide effectiveness. Weather conditions greatly influence the herbicide's effective­ness and weed control may be better under favorable conditions or poorer under unfavorable conditions.

54

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TABLE 8 — WEED RESPONSE TO HERBICIDES IN SUGARBEETS

PREPLANT INCORPORATED

RO-NEET

PREEMERGENCE

ANTOR NORTRON PYRAMIN TCA

POSTEMERGENCE

BETAMIX BETANEX DOWPON H273 NORTRON POAST

ockl

ebur

u

P

N

p N

F p

N P F N

ANNUAL BROADLEAVES

mso

nwee

d

• - »

p

N F P N

F F N P F N

ambs

quar

ter

- i

P

P G E F

E G N P G N

ight

shad

e (B

lack

)

z

P

F G G P

F F N P G N

igw

eed

(Red

root

)

0-

P

F G G F

F G N P G N

agw

eed

cc

P

P P G F

G G N P P N

mar

twee

d

CO

P

P G G F

G G N E G IM

elve

tleaf

>

P

N P P N

P P N P P N

'ild

mus

tard

2=

P

P G G P

G G N P G N

ANNUAL GRASSES

arny

ardg

rass

CO

G

G P F G

P P G N P E

rabg

rass

o

G

G G F G

P P F N G E

iant

fox

tail

o

G

G P F G

P P G N P E

reen

fo

xtai

l

o

G

G F F G

P P G N F E

ello

w f

oxta

il

>-

G

G F F G

P P G N F E

all

pani

cum

UL

G

G P F G

P P G N P E

fitch

gras

s

s

G

G P F G

P P G N P E

PERENNIALS

indw

eed

(Fie

ld)

CO

N

N N N N

N N N N N N

indw

eed

(Hed

ge)

CO

N

N N N N

N N N N N N

anad

a th

istle

u

N

N N N N

N N N P N N

uack

gras

s

ello

w n

utse

dge

a >•

N F

N G N P N N G P

N N N N G P N N N P F N

TABLE 9 — WEED RESPONSE TO MISCELLANEOUS AND NON­SELECTIVE HERBICIDES*

AMITROL DOWPON MILOGARD PARAQUAT ROUNDUP

k. 3 JQ

o U

E N G E E

ANNUAL BROADLEAVES

onw

eed

SUI

E N

y_ U

J

E

bsqu

arte

r

E ra - 1

E N G E E

lack

) ts

hade

(B

J =

abo

z E N

LU

LU

E

root

) ig

wee

d (R

edi

agw

eed

0 . OC

E E N N E E E E E E

rtw

eed

ra

E w

E N

LU

UJ

E

3tle

af

el vi

>

E N P E E

mus

tard

fil

d

2=

E N E E E

yard

gras

s ar

n

00

E G G E E

ANNUAL GRASSES

gras

s ra

b

u

E F P E E

t fo

xtai

l

c ra

CO

E G F E E

n f

oxta

il re

e

C3

E G P E E

w f

oxt

ail

ello

>-

E G G E E

pani

cum

ra u.

E G P E E

h gr

ass

fitc

=

E G P E E

4-> 0)

pros

o m

i fil

d

=s

E G P E E

PERENNIALS

Id)

wee

d (F

ie

ind

CO

F N P P G

dge)

w

eed

(He

ind

CO

G N P P G

ida

this

tle

ra e ra o

G N P P G

0) bfi

;kgr

ass

w

nuts

ed

ra —

3 « cr >-

G P G P F F P P E P

P = Poor; F = Fair; G = Good; E — Excellent; N = None

*The above ratings are a relative comparison of herbicide effectiveness. Weather conditions greatly influence the herbicide's effective­ness and weed control may be better under favorable conditions or poorer under unfavorable conditions.

55

Page 56: WEED CONTROL GUIDE - Michigan State University …archive.lib.msu.edu/DMC/Ag. Ext. 2007-Chelsie/PDF/e434/e434-1985.pdf · Weed Control Guide for Field Crops ... The field cultivator

TABLE 10 — GLOSSARY OF CHEMICAL NAMES COMMON NAME

TRADE NAME* AND MANUFACTURER

CONCENTRATION AND COMMERCIAL FORMULATION*

ACIFLUORFEN Blazer 2L (Rohm and Haas) ALACHLOR Lasso (Monsanto) AMETRYN Evih (Ciba-Geigy) AMITROL Amitrol T (Union Carbide)

Amino Triazole, Cytrol Amitrol-T (American Cyanamid)

ATRAZINE Several (various) ATRAZINE + BUTYLATE + R-25788 . . . Sutazine (Stauffer) ATRAZINE + METOLACHLOR Bicep (Ciba-Geigy) BENEFIN Balan (Elanco) BENTAZON Basagran (BASF) BROMOXYNIL ME4 Brominal (Union Carbide)

Buctril (Rhone-Pouiene) BUTYLATE + R-25788 Sutan Plus (Stauffer),

Genate Plus (PPG) CHLORAMBEN Amiben (Union Carbide) CYANAZINE Bladex (Shell) CYCLOATE Ro-Neet (Stauffer) DALAPON Dowpon M (Dow) DESMEDIPHAM Betanex (Nor-Am) DESMEDIPHAM + PHENMEDIPHAM... Betamix (Nor-Am) DICAMBA Banvel or Banvel II (Velsicol) DICLOFOP Hoelon (Am. Hoechst) DIETHATYLETHYL Antor (Nor-Am) DINOSEB amine salt Premerge (Vertac) (DNBP) oil soluble General Weed Killer (Vertac) ENDOTHALL Endothal, Herbicide

273 (Pennwalt) EPTC Eptam (Stauffer), Genep (PPG) EPTC + R-25788 Eradicane (Stauffer) EPTC + R-25788 + R-33865 Eradicane Extra (Stauffer) ETHOFUMESATE Nortron (Nor-Am) FLUAZIFOP-BUTYL Fusilade (ICI) GLYPHOSATE Roundup (Monsanto) HEXAZINONE Veipar (DuPont) LINURON Lorox (DuPont), Linex (Griffin) MCPA Several (various) METOLACHLOR Dual (Ciba-Geigy) METRIBUZIN Lexone, Lexone OF,

Lexone 4L (DuPont), Sencor Sencor DF, Sencor 4 (Mobay)

NAPTALAM + DINOSEB Various PARAQUAT . Ortho Paraquat (Chevron)

Gramoxone (ICI) PENDIMETHALIN Prowl (American Cyanamid) PRONAMIDE . . . Kerb (Rohm + Haas) PROPACHLOR Ramrod (Monsanto) PROPAZINE Milogard (Ciba-Geigy) PYRAZON Pyramin (BASF) SETHOXYDIM Poast (BASF) SIMAZINE Princep (Ciba-Geigy) TCA TCA (various) TERBACIL Sinbar (DuPont) TRIFLURALIN Treflan (Elanco) 2,4-D Several (various) 2,4-DB Butyrac (Union Carbide)

Butoxone (Vertac)

2 lb/gal L 4 lb/gal L; 15% G 80% WP 90% WSP 90% WSP, 2 lb/gal L

80% WP; 4 lb/gal L, 90% WDG 6 lb/gal L (1.2 + 4.8) 4.5 lb/gal L (2 + 2.5) V/2 lb/gal L 4 lb/gal L 4 lb/gal L 2 lb/gal L 6.7 lb/gal L; 10% G

10% G; 2 lb/gal L; 75% DS 80% WP, 4 L; 15% G 6 lb/gal L; 10% G 74% WSP 1.3 lb/gal L 1.3 lb/gal L (.65 + .65)) 4 lb/gal or 2 lb/ gal L 3 lb/gal L 4 lb/gal L 3 lb/gal L 5 lb/gal L 1.46 lb/gal L 3 lb/gal L; 5% G 7 lb/gal L; 10% G 6.7 lb/gal L 6 lb/gal L 11/2 lb/gal L, 4 Ib/galL 4 lb gal/L 3 lb/gal L 2 lb/gal L, 90% WP 50% WP, 4 lb/gal L Various L 8 lb/gal L 50% WP; 75% DF, 4 lb/gal L

3 lb/gal L (2 + 1)

2 lb/gal L

4 lb/gal L 50% WP 65% WP; 20% G 4 lb/gal L; 80% WP; 90% WDG 80% WP 1.53 lb/gal L 80% WP; 4% G, 4 lb/gal L; 90% WDG 4.76 lb/gal L; 79.3% WSP 4 lb/gal L; 80% WP 4 lb/gal L; 5% G L, G, various 2 lb/gal L

•"Several" means there are numerous trade names for the chemical. The mention of trade names does not imply that they are en­dorsed or recommended over those of similar nature not listed.

tDF—dry flowable, G—granular, L—liquid, WDG—water dispersible granule, WP—wettable powder, WSP—water soluble powder.