Contans QA COCOAQ0909 Final

8/14/2019 Contans QA COCOAQ0909 Final

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1.Application1. Do I have to apply Contans every year or can I apply in the year

that field is in a susceptible crop? Typically Contans is applied in the

spring or prior fall to a field that will have the susceptible crop for thatyear. However Contans may be applied during the year of a non-hostcrop (i.e. Corn) to continue to reduce the amount of sclerotia in the soil.

2. I am only going to make one application - should it be fall orspring? A fall application is better due to the fact that Contans has moretime to degrade the sclerotia. It takes Contans two - three months tobreak down the sclerotia in the soil. Since Contans is a fungal product, itenjoys an environment of cool and moist weather.

3. If I am only going to make one application should I increase therate? Contans reduces the amount of sclerotia by 80-85% each year it is

used. The more beneficial fungus (Contans) applied the greater thereduction in the populations of sclerotia. Tillage and soil movement willbring deeper, less active sclerotia to the surface where it will becomemore active. More than one application is recommended to help reducethe amount of sclerotia in the soil.

4. What is the best way to apply Contans in a no-till or minimum tillsituation? Apply Contans early in the spring or in the fall before a rainevent.

5.After application of Contans how much soil disturbance can takeplace and not affect the product? We would like to see the productstay in the top 1-2 inches of the soil profile so that it comes into contact

with the active sclerotia populations that form apothecia which then formthe ascospores.

6. If I do not incorporate Contans, how much rainfall do I need tomove it into the soil? A half inch to one inch rainfall will helpincorporate the product.

7. The Contans label says to incorporate 2 inches deep. This isimpossible to do with corn stalk residue. When and how should Iincorporate Contans on corn stalks going to beans? The labelstates that the product should be incorporated in the top two inches ofthe soil. This is because the sclerotia that form apothecia that causeinfection are in the top two inches of soil. If you are unable tomechanically incorporate Contans in the first two inches of soil, sprayContans on the soil before a rain event to help incorporate the product.

8. Which is better - spring or fall application? A fall application is betterdue to the fact that Contans has more time to degrade the sclerotia. Ittakes Contans two - three months to break down the sclerotia in the soil.Since Contans is a fungal product, it enjoys an environment of cool andmoist weather.


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9. I conduct deep tillage before planting beans in the spring. Can Iapply Contans either at planting or after planting, withoutincorporation? There are many growers who apply the product without

incorporating. Keep in mind that Contans is a living fungus and it needsto be in contact with the sclerotia in cool moist conditions. Ifincorporation cannot be done, it would be advantageous for you to applyContans before a rain event or irrigate into the top 2 inches of soil. Donot apply Contans during a week of hot weather (80 degrees Fahrenheit)on dry soil.

10.Do I need to rinse my application equipment after usingContans? It is recommended that you rinse your booms out after aContans application.

2. Crop Rotation1.

I am going to corn next year, what is the benefit of a Contansapplication in that cropping rotation? The benefit of Contans beingapplied on the soybean stubble in the fall before corn is that the productis working on the sclerotia during a non-host crop. The non-susceptiblecrop will not produce more sclerotia therefore Contans has more time tobreak down the sclerotia in the soil.

3. Water1.You say not to tank mix Contans with chlorinated products, such

as metolachlor and alachlor. I use chlorine-treated municipalwater for my carrier. Can I still use Contans with this water? Youcan use Contans with chlorine treated water because the amount of

chlorine in chlorinated water falls below the level that would cause anissue with Contans.

2. Will using city water affect the performance of Contans? No. Seequestion 1 above.

4. Tank Mixing1. Can I tank mix Contans with liquid fertilizer? Do not mix Contans

with liquid fertilizer. The high concentration of fertilizer will kill the sporesin solution

2. What products can Contans be tank mixed with? Contans can betank mixed with Treflan, Prowl, Sonalan, Roundup and many other pre-emerge herbicides. See your CONTANS distributor for specific tank mixcompatibility.

3. What products are DO NOT tank mix with? Remember Contans is anaturally occurring fungus. Do not mix Contans with fertilizer or otherfungicides.

4. When tank mixing with other products, should Contans go in thetank first or last? Since Contans is a wettable granular, it can go into


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the tank first followed by a liquid. The sooner the spores can be sprayedonto the field, the greater the performance.

5. Storage1. I have some Contans left over from spring. How should I store it

until fall or next spring? In order to ensure viability of the product,store left over Contans in a freezer.

2. Can Contans be left in warehouse over winter in the Midwest asopposed to being in refrigerator? Due to the varying temperaturechanges in the spring, we would prefer that the product stays in acontrolled environment in order to ensure viability of the product.

3. How should I store Contans till time of use? In order to ensureviability of the product, it is always best to store Contans in a freezer.

4. Can Contans freeze and thaw? Contans is kept frozen and can bethawed out before application. When Contans is kept frozen, it puts theorganism to sleep. Unused, unmixed product can be re-frozen to ensureviability.

5.At what soil temperature does Contans not work? Above 80degrees Fahrenheit is when Contans does not work as well in the soil.

6. How long does Contans last in a refrigerator? The manufacturerstates that at 50 degrees Fahrenheit, the shelf-life of the product is 30days. If you store the product at 40 degrees, the shelf-life is 6 months.Below freezing the shelf-life is over one year.

7. My dealer delivered Contans last week. I wont be applyingContans for another three weeks. How should I store Contans to

ensure product integrity? The cooler the product stays, the better theproduct integrity. Store below 40 degrees Fahrenheit or freeze until readyto use.

2009 Sipcam Agro USA, Inc. Contans is a registered trademark of PROPHYTA Biologischer Pflanzenschutz GmbH.Always read and follow label instructions.

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Contans QA COCOAQ0909 Final