All India Coordinated Research Project on Weed Management ... Document/AICRP-WC...Pyrazosulfuron 25 g/ha rotated with pretilachlor 0.750 kg/ha fb bispyribac-Na 25 g/ha (75% nutrient

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All India Coordinated Research Project on Weed Management (AICRP-WM)

ICAR-Directorate of Weed Research, Jabalpur (MP)

Technical Programme 2020-21& 2021-22

WP1. Development of location specific sustainable weed management practices

WP1.1 Weed management in major crops and cropping systems of the state

WP1.1.1 Weed management in rice, and rice-based cropping systems

Observations (Following observations to be taken in each experiment under WP 1.1)

1. Weed emergence - population (species-wise) and dry matter accumulation (category-wise –

sedge, grasses, BLW, total) at 30, 60 DAS/T and harvest and base year observations.

2. Crop growth parameters [plant height, dry matter production (species wise and total) and no. of effective tillers) ] at 60DAS/DAT, and at harvest and yield (grain and straw) at harvest

3. Continuous monitoring of shift in weed species as compared to base year

4. Weed seed bank studies soil depth wise 0-10 cm and 10-20 cm depths soil samples just after summer and before kharif season. Minimum of 3 kg soils need to be collected and seed bank

study will be conducted in trays.

5. Energetic and economics of tillage and weed management practices

6. Effect on physico-chemical and biological properties of soil– initial and after end of each cycle.

7. Phytotoxicity on crops, if any

8. Nutrient status before and after the cropping cycle 9. Visual observation may be recorded for residual toxicity if any of previous crops herbicides and

can be compared to unweeded control

10. Effect soil physio – chemical and biological properties 11. Economics of the treatments

Coimbatore

WP 1.1.1.1 Long-term herbicide trial in transplanted lowland rice-rice cropping system

OLD

Objectives

To study the influence of weed management on weed shift, productivity and economics in transplanted rice-rice cropping system

To assess the persistent and residue (soil, grain and straw) of herbicides

To study the effect of weed management on rhizosphere microbial community

Treatments:

Treatment Dose (g/ha) DAT

T1: PE pyrasosulfuron-ethyl fb hand weeding (K & R) 20 3 fb 30

T2: PE pyrasosulfuron-ethyl fb hand weeding (K) + PE bensulfuron-

methyl + pretilachlor fb hand weeding (R) 20 +660

3 fb 30

(K and R)

2

T3: PE pyrasosulfuron-ethyl (10% WP) fb penoxsulam+ cyhalofop butyl

(RM) (K & R) 20 fb 135 3 fb 25

T4: PE pyrasosulfuron-ethyl (10% WP) fb POE bispyribac-sodium (10%

EC) (K) + PE bensulfuron-methyl + fb POE bispyribac-sodium (R)

20 fb 25 +

660 fb 25

3 fb 30

(K and R)

T5: Hand weeding twice - 15 and 30

T6 : Unweeded check - -

K –Kharif; R -rabi, DAT: Days After Transplanting Design: RBD; Replications: Non-replicated

Crops : Rice

Seasons : K –Kharif ; R -Rabi

Design : RBD

Replication : Non replicated

Plot size : 12 m X 9 m

Observations: As given under WP 1.1

Jorhat

WP 1.1.1.2 Long-term herbicidal trial in rice-rice cropping sequence

OLD

(Year of commencement Kharif 2016)

Objectives

Treatments

S No Treatments

1. Farmers practice (pretilachlor 0.750 kg/ha + NPK fertilizer)

2. Farmers practice (pretilachlor 0.750 kg/ha + 75% nutrient through fertilizers + 25% nutrient

through organic source)

3. Pyrazosulfuron 25 g/ha fb bispyribac-Na 25 g/ha (100% nutrient through fertilizers)

4. Pyrazosulfuron 25 g/ha fb bispyribac-Na 25 g/ha (75% nutrient through fertilizers + 25%

nutrient through organic source)

5. Pyrazosulfuron 25 g/ha rotated with pretilachlor 0.750 kg/ha fb bispyribac-Na 25 g/ha (100%

nutrient through fertilizers)

6. Pyrazosulfuron 25 g/ha rotated with pretilachlor 0.750 kg/ha fb bispyribac-Na 25 g/ha (75%

nutrient through fertilizers + 25% nutrient through organic source)

Plot Size: - 10m x 10m =100 m2

Design: RBD Replication: 3


Jorhat

WP 1.1.1.3 Weed management in rice-pea-rice cropping sequence

NEW

Objective: To find out an alternative method of rice cultivation along with the minimization of yield loss

from weeds in rice-pea relay cropping system

Treatments:

First crop rice:

3

Rice variety: Any medium duration recommended variety

Design: Split-plot Replication: 3

Methods of crop establishment (M)

M1: Conventional transplanting

M2: Direct Seeding by drum seeder

M3: Reduced tillage up to 50% with direct-seeding

Weed management practices (W)

W1: Pretilachlor 0.750 kg/ha

W2: Pretilachlor 0.750 kg/ha PE + working with grubber/Paddy weeder at 30DAS/DAP

W3: Pyrazosulfuron-ethyl 25g/ha PE + bispyribac-sodium 0.025 kg/ha at 30 DAS/DAP

W4: Working with grubber/Paddy weeder at 20 and 40 DAS/DAP

Second and third crop pea & rice:

Variety: Any suitable recommended variety

Treatments: No weed management treatments. The residual effect of the first crop will be studied.

Design: Split plot Replication: 3 Plot size: 4m x 3m


Anand

WP 1.1.1.4 Weed management in dry seeded DSR

Collaboration with AICRP on Rice, AAU, Anand

Objectives: 1. To evaluate the bio-efficacy of different herbicides to manage complex weed flora in drilled rice 2. To study the effect of different weed management practices on growth and yield of rice 3. To assess phytotoxicity of applied herbicides, if any on crop

Year of commencement: Kharif-2020

Treatment:

Note: - PE = Pre-Emergence (1-3 DAS) EPoE = Early Post-Emergence (10-15 DAS)

PoE = Post-Emergence (25-30 DAS)

Experimental details:

Sr.

No. Treatments

Dose

g/ha

Time of

application

T1 Pretilachlor + pyrazosulfuron-ethyl (premix) 600+15 PE

T2 Pretilachlor + pyrazosulfuron-ethyl fb HW at 30 DAS (premix) 600 fb15 PE

T3 Pretilachlor fb bispyribac-sodium 600 fb 25 PE fb PoE

T4 Bentazone 480 g/l SL + bispyribac-sodium (tank mix) 960+25 EPoE

T5 Bispyribac-sodium fb HW at 30 DAS 25 EPoE

T6 Metsulfuron-methyl + chlorimuron-ethyl (premix) 4 g/ha EPoE

T7 Triafamone + ethoxysulfuron (premix) 44.0+22.5 PoE

T8 Triafamone + ethoxysulfuron (premix) fb mechanical weeding at

30 DAS

44.0+22.5 EPoE

T9 Penoxsulam + cyhalofop-butyl (premix) 120 PoE

T10 Penoxsulam + cyhalofop-butyl (premix) fb HW at 30 DAS 120 EPoE

T11 Mechanical weeding at 20 and 40 DAS - -

T12 Weedy - -

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1. Crop : Rice

2. Season : Kharif

3. Variety : Mahisagar

4. Seed rate : 60 kg/ha

5. Spacing : 30 cm between rows

6. Method of sowing : Drilling

7. Fertilizer : 50-25-0 NPK kg/ha

8. Design : RBD

9. Replications : Three

10. Plot Size : Gross: 3.60 x 5.0 m

: Net: 2.40 x 4.0 m

11. Water volume : 500 litres/ha

12. Spray equipment : Knapsack sprayer fitted with flat fan nozzle


Karaikal (Volunteer centre)

WP 1.1.1.5 Weed management options for control of complex weed flora in dry direct- seeded rice

Objectives:

To study the weed management treatments against weed complex; and their effect on growth and yield of (unpuddled) dry direct-seeded rice

To study the phytotoxic effects on the crop, if any

Treatments:

Seed rate (3 levels) -Main plot

S1 – 56 kg/ha (75% of recommended seed rate)

S2 – 75 kg/ha (Recommended seed rate)

S3 – 94 kg/ha (25% higher recommended seed rate)

Weed management (4 levels)- Sub plot

W1 – Pendimethalin 1.0 kg/ha (PE)

W2 – Bispyribac-Na 25 g /ha (PoE)

W3 – Pendimethalin 1.0 kg/ha fb bispyribac-Na 25 g/ha

W4 – Unweeded control

* Medium duration variety will be used

Season: Aug 2020 – Jan 2021 Design: Split plot design Replications: 3


Kashmir (Volunteer centre)

WP 1.1.1.6 Study of weed flora and their management through herbicides in rice grown under different establishment methods.

Objectives:

To study the effect of herbicides on weed dynamics under direct seeding and transplanted rice

To study the effect of herbicides on growth and productivity of rice grown under direct seeding and transplanted rice

Treatments:

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Main plot treatments: Crop establishment method

i. Conventional transplanted rice (TPR) ii. Direct seeded rice (DSR)

Sub-plot treatment: Herbicides application

i. Butachlor 5% G (PE 1.5 kg/ha)

ii. Bispyribac-sodium (POE 25 g/ha)

iii. Penoxulam (Early POE 22.5 g/ha)

iv. Bensulfuron-methyl 0.6%+pretilachlor 6% GR (PE, 0.660 kg/ha)

v. Pyrazosulfuron ethyl 0.15%+pretilachlor 6% GR (PE, 0.615 kg/ha)

vi. Metsulfuron-methyl 10%+chlorimuron-ethyl 10% + 0.2% surfactant (POE, 4 g/ha)

vii. Weed free

viii. Weedy check

Design: Split-plot design

Replication: 3

Plot size: 3.00 m x 5.00 m


Jammu

WP 1.1.1.7 (i) Effect of green manures and herbicides on weed dynamics and yield of transplanted

rice-wheat cropping system

NEW

Objectives:

To study the effect of green manuring and pre and post-emergence herbicidal weed management on weed flora dynamics and productivity of rice.

Treatments:

Factor A In-situ green manuring (Main plot) Rice Nutrient levels (Main plot) Wheat

1. Cowpea 75% RDF

2. Dhaincha 100% RDF

3. Cluster bean 125% RDF

Factor B Herbicides (Sub-plot) Herbicides (Sub-plot)

1. Pretilachlor+pyrazosulfuron -ethyl 600+15

g/ha as PE

Sulfosulfuron + carfentrazone-ethyl

25+20 g/ha at 30-35 DAS

2. Bispyribac-sodium 25 g/ha at 25 days after

sowing

Clodinafop propargyl + metsulfuron-

methyl 60+4 g/ha at 30-35 DAS

3. Triafamone + ethoxysulfuron 66.5 g/ha

(44+22.5 g/ha) as post-emergence

Clodinafop propargyl + metribuzin

54+120 g/ha at 30-35 DAS

4. Mechanical weeding at 20 & 40 DAT Mesoulfuron-methyl + iodosulfuron-

methyl sodium 14.4 g/ha at 30-35 DAS

*In-situ green manuring at 40-45 DAS, 100% RDF=100:50:25 NPK

Experiment details: Design: Spilt plot Design Plot size: 5 x 4 m Replications: 3

Observations (As given under WP 1.1.1, page 1)

WP 1.1.1.7 (ii) Effect of green manures and herbicides on weed dynamics and yield of direct seeded

rice-wheat cropping system

Objectives:

6

To study the effect of green manuring and pre and post emergence herbicidal weed management on weed flora dynamics and productivity of rice.

Treatments:

Factor A In-situ green manuring (Main plot) Rice Wheat establishment (Main plot)

1. Cowpea Conventional tillage

2. Dhaincha Zero tillage

3. Stale seed bed FIRB

Factor B Herbicides (Sub-plot) Herbicides (Sub-plot)

1. Pendimethalin 1.0 kg/ha as pre-emergence Pendimethalin 1 kg/ha as PE

2. Bispyribac-sodium 25 g/ha at 25 days after

sowing

Flumioxazin 125 g/ha as PE

3 Triafamone + ethoxysulfuron 66.5 g/ha


Pyroxasulfone 127.5 g/ha as PE

4.

Pendimethalin 1 kg/ha as pre-emergence fb

bispyribac-sodium 25 g/ha at 25 days after

sowing

Weed free

5.

Pendimethalin 1 kg/ha as pre-emergence fb

triafamone + ethoxysulfuron 66.5 g/ha


Weedy check

*In-situ green manuring at 40-45 DAS

Experiment details: Design: Spilt plot Design Plot size: 5 x 3.2 m Replications: 3


Banda (Volunteer centre)

WP1.1.1.8 Study on weed dynamics and weed management strategies in wheat under rice-wheat crop sequence of Buldelkhand region of U.P.

Objective:

To study the effect of weed management practices on weed dynamics

To study the effect of different weed management practices on crop growth, yield and economics

Treatment

Main plot treatment (Tillage practice)

T1-Conventional Tillage

T2-Zero Tillage

Sub Plot treatment

W1-Pendimethalin PE 1.0 kg/ha

W2-Pendimethalin 0.678 kg/ha + pyroxasulfone 127.5 g/ha

W3-Clodinafop propargyl +metsulfuron-methyl 60+ 4 g/ha as post-emergence. W4-Sulfosulfuron + metsulfuron (32 g/ha)

W5-Weedy check (control)

W6- Weed free

Design of experiment: Split plot Design Replication: 3 Plot size: 5m x 4m


Kalyani

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WP 1.1.1.9 Study on weed dynamics and weed management strategies in rice-wheat-green manure

cropping system under new alluvial soils

Objective:

To study the effect of weed management practices on weed dynamics

To study the effect of different weed management practices on crop growth, yield and economics

Treatment details

Treatments Kharif (Rice) Rabi (Wheat)

T1 Oxadiagryal PE 0.1 Kg/ha fb 2,4-D

POE 0.5 Kg/ha 25 DAT

Pendimethalin PE 1.0 Kg/ha fb metribuzin

POE 0.2Kg/ha 25 DAS

T2 Pretilachlor PE 0.70 Kg/ha Pendimethalin PE 1.0 Kg/ha

T3 Pretilachlor PE 0.70 Kg/ha fb

bispyribac-Na 25 g/ha 25 DAS

Pendimethalin 0.678 kg/ha + pyroxasulfone

127.5 g/ha


cyhalofop-butyl + penoxsulam 112.5 +

22.5 g/ha)

Pendimethalin PE 1.0 Kg/ha fb one hand

weeding at 30 DAS

T5 Oxadiagryal PE 0.1 Kg/ha fb passing

of conoweeder

Clodinafop-propargyl +metsulfuron-methyl

60+ 4 g/ha as post-emergence.

T6 Pretilachlor PE 0.70 Kg/ha fb passing

of conoweeder

Mesosulfuron+ iodosulfuron (RM) 13.4 g/ha


triafamone + ethoxysulfuron

(44.0+22.5)

Sulfosulfuron + metsulfuron (32 g/ha)

T8 2 hand weeding at 20 & 40 DAS 2 hand weeding at 20 & 40 DAS

T9 Weedy check (control) Weedy check (control)

Design of experiment: RCBD Replication: 4 Plot size: 5m x 4m


Raipur

NEW

WP 1.1.1.10 Weed management in transplanted rice-chickpea cropping system

Objectives:

1. To study the effect of pre and post emergence herbicidal weed management on weed flora in rice-

chickpea

2. To evaluate different weed management practices for their effectiveness in rice and chickpea

3. To study the economics of the treatments.

Treatments Rice: transplanted condition Design RBD, Replications: Three

T1 Oxadiargyl 80g/ha PE fb PoE of bispyribac-Na at 20-25 DAT

T2 Oxadiargyl 80g/ha PE fb PoE penoxsulam + cyhalofop butyl 135 g/ha PoE as ready-mix at 20-25

DAT

T3 Oxadiargyl 80 g/ha PE fb PoE triafamone + ethoxysulfuron 66.5 g/ha as ready-mix at 20-25

DAT

T4 PoE penoxsulam + cyhalofop butyl 135 g/ha PoE as ready-mix at 20 DAT

T5 PoE triafamone + ethoxysulfuron 10% 66.5 g/ha as ready-mix at 20 DAT

T6 EPoE of Pretilachlor+bensulfuron 660 g/ha 10-12 DAT fb penoxsulam + cyhalofop 135 g/ha

PoE as ready-mix at 25-30 DAS

T7 EPoE Pretilachlor+bensulfuron 660 g/ha 10-12 DAT fb triafamone + ethoxysulfuron 66.5 g/ha as

ready-mix at 25-30 DAT

T8 Pyrazosulfuron 20 g/ha PE fb penoxsulam + cyhalofop 135 g/ha as ready-mix at 25-30 DAT

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T9 Motorized weeder twice (single/double row type) 20 DAT fb Intra-row hand weeding at 40 DAT

T10 Mechanical weeding through Ambika paddy weeder at 20 and 40 DAS

T11 Two hand weeding (20 & 40 DAT)/Single hand weeding at 30 DAT

T

12

Weedy Check

*weedy check treatment seems to be needed to observe the weed flora of field as almost all the weeds of

the experimental area will occur in the weedy check plot

Chickpea, Design RBD, Replications: 03

Treatments details

T1 Pendimethalin 678 g/ha as PE

T2 Pendimethalin + imazethapyr 1000g/ha as PE

T3 Oxyfluorfen 140 g/ha as PE

T4 Topramezone 25.28 g/ha as POST (18-20 DAS)

T5 Pendimethalin 678 g/ha PE fb quizalofop 50 g/ha POST

T6 Pendimethalin 678 g/ha PE fb propaquizofop 50 g/ha POST

T7 Flauzifop – p- butyl+fomesafen 125 g/ha POST

T8 Flauzifop – p- butyl+fomesafen 250 g/ha POST

T9 Propaquizafop + imazethapyr 125 g/ha POST

T10 Mechanical weeding at 20 fb 40 DAS

T11 Hand Weeding at 30 DAS/Farmers practice

T 12 Weedy Check* please see the remark below

*weedy check treatment may be required to observe the weed flora of field as almost all the weeds of the

area will occur in the weedy check plot


Raipur

NEW

WP 1.1.1.11 Weed flora and dynamics study in long-term fertilizers experiment

(Collaboration with AICRP on Long Term Fertilizers Experiments: “Study changes in soil quality, crop

productivity and sustainability)

Objective:

To see the changes in weed flora in soil as affected by continuous application of plant nutrients during long-term

Details of Field experiment: Rice (Rajeshwari R-I) : Wheat ( C.G. – 4 Amber) RDF : 120:60:40: N:

P2O5:K2O/ha for both rice and wheat crop

Treatments:

Tr Details

T 1 Control

T 2 50% of the recommended optimum NPK fertilizer schedule (60:30:20:: N: P2O5:K2O/ha)

T 3 100% of the rec. optimum NPK dose (120:60:40: N: P2O5:K2O/ha)

T 4 150% of the rec. optimum NPK dose (180:90:60: N: P2O5:K2O/ha)

T 5 100% of the rec. optimum NPK + ZnSo4 @ 10 kg /ha in kharif crop only (120:60:40 :: N:P2O5

:K2O + Zn SO4/ha)

T 6 100% N and P of rec. N dose of fertilizer 120:60:0: N: P2O5:K2O/ha

T 7 100% N of rec. optimum N dose (120:0:0:: N: P2O5 : K2O/ha

T 8 100% NPK + FYM (5 t/ha in kharif crop only)

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T 9 50% NPK + BGA (10 kg/ha dry culture in kharif crop only)

T 10 50% NPK + GM (sown in site cut and mixed in soil in kharif season only)

Note: FYM, green manuring and ZnSO4 applied only in kharif season. Nitrogen, Phosphorus and potassium

fertilizers are applied as per treatments requirement during both the seasons.

Experimental Details

a. Design - RBD

b. Replications - 4

c. Plot size - 20 m x 10 m

d. Crops - Rice (Rajeshwari R-I) : Wheat ( C.G. – 4 Amber)

e. Fertilizer Sources - N – Urea, P2O5 – Single super phosphate, K2O – Muriate

of Potash, Zn – Zinc Sulphate

f. Organic Sources - FYM, Blue green algae, Green manure (Sun hemp)

Observations : As given under WP 1.1

Akola

WP 1.1.1.12 Productivity and economics of rice-chickpea cropping sequence under different

fertigation level and weed management practices.

(For Eastern Vidarbha region paddy based cropping system)

Objectives:

To study the effect of fertigation on crop growth and yield of rice-chickpea.

To study the relative performance of herbicides for control of weeds in rice-chickpea.

To study nutrient and water use efficiency through fertigation in rice-chickpea.

To study the economics of the treatments.

Treatments:

I) Main plot treatments:

A) Fertigation levels

Trt Kharif Rice (120:60:60) NPK Kg ha-1 Rabi Chickpea (25:50:30) NPK Kg ha-1

F1 100% RDF soil application (120:60:60) NPK

Kg ha-1 (N in 3 Spilts)

100% RDF soil application (25:50:30) NPK Kg

ha-1 (N in 2 Spilts)

F2 75% RDNK in 5 Splits 50% RDNK in 3 Splits



II) Sub plot treatments:

B) Weed management practices

Trt Kharif Rice Rabi Chickpea

W1 Pendimethalin 1 kg /ha PE fb bispyribac

sodium 0.025 Kg /ha at 25 DAS.

Pendimethalin 1 kg /ha PE fb propaquizafop

+ imazethapyr 0.125 Kg/ha at 20-25 DAS.

W2 Pretilachlor + pyrazosulfuron-ethyl 0.615 kg

/ha PE fb bispyribac sodium 0.025 Kg/ha at

25 DAS.

Oxyfluorfen 0.140 kg/ha PE fb quizalofop-

ethyl 0.050 Kg/ha at 20-25 DAS.

W3 Pretilachlor 0.75 kg /ha PE fb bispyribac-

sodium 0.025 Kg/ha at 25 DAS.

Pendimethalin 1 kg /ha PE fb topramezone

0.040 Kg/ha at 20-25 DAS.

W4 Farmer practices – 2 HW 15-20 Days

interval after sowing fb 2 hoeing

Farmer practices –2 hoeing 15-20 Days

interval after sowing fb 2 HW

W5 Weedy check Weedy check

The quantity of fertilizer in each Split through fertigation

10

Rice (Kharif) Chickpea (Rabi)

Quantity of fertilizer to be

applied

Stage of crop

(DAS)

Quantity of fertilizer to

be applied

Stage of crop

(DAS)

10% RDNK Basal 25% RDNK Basal

20% RDNK 20 DAS 25% RDNK 20 DAS



20% RDNK 80 DAS

DAS- Days after sowing, RDNK – Recommended dose of N & K

Source of fertilizer – N and K through straight fertilizer i.e. Urea and murate of postash (White-water

soluble) through drip. Phosphorus applied in the form of single super phosphate as a basal.

Design: Split Plot Design Replications: 3, Plot Size:- 4.8 X 6.0 M2


WP 1.1.2 Weed management in maize and maize-based cropping systems

Jorhat

WP 1.1.2.1 Integrated weed management in potato-maize cropping sequence

NEW

Objectives:

To find out the most suitable weed management practice in potato-maize cropping sequence with

maximum crop yield.

To find out effect of different combination of weed management practices on weed flora in

potato-maize cropping sequence.

Treatments:

T1: Farmers practice i.e., manual weeding (both the crop)

T2: Potato - Fallow (recommended practice)

T3: Fallow - Maize (recommended practice)

T4: Mulching with water hyacinth 6 t/ha in potato - pre-emergence application of atrazine 1 kg/ha in maize.

T5: Mulching with rice straw 6 t/ha in potato - pre-emergence application of atrazine 0.5 kg/ha +

tembotrione (120 g/ha) in maize.

T6: Use of cultivator 30 days in potato- live mulching with cowpea in maize.

T7: PE application of metribuzine 500 g/ha + one mechanical weeding in potato followed by live mulching

with cowpea in maize.

T8: PE application of metribuzine 500 g/ha + mulching with plant biomass in potato followed by live

mulching with green gram in maize.

T9: Mulching with lemongrass/citronella leaves (both the crop)

Design: RBD Replication: 3 Plot size: 4m x 3m


Other observations:

1. Weed control efficiency (%), Weed index (%)

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2. Phytotoxicity on crops, if any

Jammu

WP 1.1.2.2 Effect of herbicides on weed dynamics and yield of maize-chick pea cropping system

(Collaboration Advanced Centre for Rainfed Agriculture (ACRA), SKUAST-J)

Objectives:

To study the effect of pre and post emergence herbicidal weed management on weed flora dynamics and productivity of rainfed maize and chick pea

Treatments:

S.

No. Maize

Chickpea

1. Atrazine 1000 g/ha as PRE Pendimethalin 678 g/ha as PE

2. Pyroxasulfone 127.5 g/ha as PRE Oxyfluorfen 140 g/ha as PE

3. Tembotrione 120 g/ha as POE Imazethapyr + pendimethalin (RM) 1000 g/ha as PE

4. Topramezone 25.2 g/ha POE Pendimethalin 1000 g/ha fb quizalofop ethyl 50 g/ha

at 20-25 DAS

5. Tembotrione + atrazine 120 + 500 g/ha as

POE

Pendimethalin 1000 g/ha fb propaquizafop 50 g/ha at

20-25 DAS

6. Topramezone + atrazine 25.2 + 500 g/ha

POE Topramezone 25.2 g/ha at 20-25 DAS

7. Mesotrione + atrazine 87.5 +875 g/ha as

POE

Propaquizafop + imazethapyr 50 + 75 g/ha at 20-25

DAS

8. Tembotrione + 2, 4-DEE 120 + 500 g/ha

as POE Fluazifop-p-butyl + fomesafen 125 g/ha POE

9. Topramezone + 2, 4-DEE 25.2 + 500 g/ha

POE Fluazifop-p-butyl + fomesafen 250 g/ha POE

10. 2 mechanical weeding at 20 & 40 DAS Mechanical weeding at 20 and 40 DAS

11. Weedy Weedy

Experiment details:

Design: RBD Plot size: 5 x 4 m Replications: 3

Observations : As given under WP 1.1.

Bhubaneswar

WP 1.1.2.3 Weed management with new generation herbicides in maize (Sweet corn) in maize-

black gram /green gram cropping system.

(Same treatment as previous experiment)

Objectives:

To evaluate the efficacy of different herbicides mixture for weed management in maize

To study the effect of different herbicides mixture on yield and yield attributes of maize

To assess herbicide residues and phytotoxicity of applied herbicides, if any on crop

Treatments:

Maize

T1: Atrazine 0.75 kg/ha PE fb HW at 40 DAS

T2: Atrazine+pendimethaline (0.50 +0.25 kg/ha) PE (tank mix)

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T3: Atrazine1.0 kg/ha PE fb 2,4-D1.0 kg/ha LPoE

T4: Atrazine+pendimethaline (0.50 +0.25 kg/ha) PE fb 2,4-D1.0 kg/ha LPoE

T5: Topramezone 25 g/ha EPoE fb IC

T6: Tembotrione 120 g/ha EPoE fb IC

T7: Topramezone + atrazine (25 + 500 g/ha) EPoE fb IC

T8: Tembotrione + atrazine (100+ 250 g/ha) EPoE fb IC+ HW at30 DAS

T9: IC+ HW at 20 and 40 DAS

T10: Weedy check

Blackgram/greengram

Treatments Dose (g/ha) Time of application

1. Pendimethalin 38.7 678 PE

2. Oxyfluorfen 140 PE

3. Imazethapyr + pendimethalin (RM) 1000 PE

4. Pendimethalin + quizalofop-ethyl 1000+50 20-25 DAS

5. Pendimethalin + propaquizafop 1000+50 POE

6. Topramezone 25.2 20-25 DAS

7. Propaquizafop 2.5 % + imazethapyr 3.75 % 50 + 75 20-25 DAS

8. Fluazifop-p-butyl + fomesafen 125 POE

9. Mechanical weeding at 20 and 40 DAS - -

10. Farmers practice‟ HW at 20 DAS - -

Note:- DAS-Day after sowing PE -Pre-emergence

EPoE-Early post-emergence (15-20 DAS) LPoE -Late post-emergence (30-35 DAS)

IC–Inter-culturing HW-Hand weeding


Ludhiana

WP 1.1.2.4 Integrated weed management in maize

Objective:

To develop integrated weed management approaches for maize

Treatments:

1. Unweeded check 2. Atrazine 625 g/ha as pre-emergence 3. Tembotrione 110 g/ha as post-emergence at 20 DAS 4. Black plastic mulch (25 μm) 5. Paddy straw mulch (6.25 t/ha) 6. Pyroxasulfone 76.5 g/ha as pre-emergence 7. Pyroxasulfone 102.0 g/ha as pre-emergence 8. Pyroxasulfone 127.5 g/ha as pre-emergence 9. Pyroxasulfone 150 g/ha as pre-emergence 10. Pyroxasulfone 102.0 g/ha fb paddy straw mulch 6.25 t/ha 11. Pyroxasulfone 102.0 g/ha fb inter-culture at 20-25 DAS 12. Tembotrione 37 g/ha (band spray;20cm width) fb inter-culture in inter-rows

Design: RBD Replication: 3 Plot size: 7.0 m x 4.2 m

13



WP 1.1.2.5 Response of maize to weed management practices under temperate conditions of Kashmir

Objectives:

To study the effect of weed management practices on weed dynamics in maize crop

To study the effect of weed management practices on growth and productivity of maize

To work out the effect of weed management practices on weed control performance indices

Treatments: i. Pendimethalin (PE 1.0 kg/ha) fb 1 hand hoeing at 35 DAS

ii. Atrazine (PE 1.0 kg/ha) fb 1 hand hoeing at 35 DAS iii. Pendimethalin + atrazine (Tank mixed PE 0.75 + 0.75 kg/ha) fb 1 hand hoeing at 35

DAS iv. Pendimethalin (PE 1.0 kg/ha) fb tembotrione (POE 120 g/ha at 35 DAS) v. Atrazine (PE 1.0 kg/ha) fb tembotrione (POE 120 g/ha at 35 DAS)

vi. Weed free (15, 30, 45, 60 & 75 DAS) vii. Weedy check

Design: RBD; Replication: 3; Plot size: 4.00 m x 5.00 m


Dharwad (Volunteer centre)

WP 1.1.2.6 Weed management with new generation herbicides in maize and its residual effect on

succeeding wheat

Objectives

To evaluate the efficacy of different herbicides mixture for weed management in maize

To Study the effect of different herbicides mixture on yield and yield attributes of maize

To assess herbicide residues in soil and produce and phytotoxicity of applied herbicides

Treatments:

T1: Atrazine 1.0 kg/ha PE fb HW at 40 DAS

T2: Atrazine + pendimethalin (0.50 + 0.25 kg/ha) PE

T3: Atrazine 1.0 kg/ha PE fb 2,4-D 1.0 kg/ha LpoE (Recommended)

T4: Atrazine + pendimethalin (0.50 + 0.25 kg/ha) PE fb 2,4-D 1.0 kg/ha LPoE

T5: Topramezone 25.2 g/ha EPoE

T6: Tembotrione 120 g/ha EPoE

T7: Topramezone 25.2 g/ha EPoE fb IC + HW at 30 DAS

T8: Tembotrione 120 g/ha EPoE fb IC + HW at 30 DAS

T9: Topramezone + atrazine (25.2 + 500 g/ha) EPoE fb IC + HW at 30 DAS

T10: Tembotrione + atrazine (105 + 250 g/ha) EPoE fb IC + HW at 30 DAS

T11: IC + HW at 20 and 40 DAS

T12: Weedy check

14

Note: - DAS - Day after sowing PE - Pre -emergence

EPoE-Early post emergence (15-20 DAS) LPoE - Late post emergence (30-35 DAS)

IC – Inter-culturing HW - Hand weeding

Experimental details:

1. Season : Kharif Rabi

2. Crop : Maize Wheat

3. Variety : GM-6 GW-496

4. Seed rate : 20 kg/ha 120 kg/ha

5. Spacing : 60 cm x 20 cm 22.5 cm

6. Method of Sowing : Dibbling Drilling

7. Fertilizer : N40 + P40 kg/ha as basal

N40 kg/ha top dressing at 30 DAS

N60 + P60 kg/ha as basal

N60 kg/ha top dressing at 30

DAS

8. Design : RBD RBD

9. Replications : Three Three

10. Plot size (Gross) : 3.60 m x 5.00 m 3.60 m x 5.00 m

Net : 2.40 m × 4.20 m 2.70 m × 4.20 m

11. Water volume : 750-1000 liters/ha -

12. Spray equipment : Knapsack sprayer fitted with Flat

fan nozzle

-

Carry over study on succeeding crops: Wheat

To know the residual effect of applied herbicides, succeeding wheat crop will be grown keeping

layout as such by adopting recommended package of practices.


Akola

WP 1.1.2.7 Productivity and economics of maize-chickpea cropping sequence under different

fertigation levels and weed management practices.

(For Western & Central Vidarbha Region)

Objectives:

To study the effect of fertigation on crop growth and yield of Maize-Chickpea.

To study the relative performance of herbicides for control of weeds in Maize-Chickpea.

To study nutrient and water use efficiency through fertigation in Maize-Chickpea.

To study the economics of the system.

Treatments:

I) Main plot treatments:

A) Fertigation levels

Trt Kharif maize (120:60:60) NPK kg/ha Rabi chickpea (25:50:30) NPK kg/ha

F1 100% RDF soil application (120:60:60) NPK

Kg/ha (N in 3 Spilts)

100% RDF soil application (25:50:30) NPK

kg/ha (N in 2 Spilts)




II) Sub plot treatments:

15



Trt Maize (Kharif) chickpea (Rabi)

W1 Atrazine 0.75 kg /ha PE fb tembotrione 0.120

kg/ha POE 20 DAS

Pendimethalin 1.0 kg/ha PE fb propaquizafop

+ imazethapyr 0.125 kg/ha at 20-25 DAS.

W2 Atrazine 0.75 kg/ha PE fb topramezone

0.0252 kg/ha POE 20 DAS.

Oxyfluorfen 0.140 kg/ha PE fb quizalofop-

ethyl 0.050 kg/ha at 20-25 DAS.

W3 Atrazine 0.75 kg/ha PE fb halosulfuron-

methyl 0.05 kg/ha POE 20 DAS

Pendimethalin 1.0 kg /ha PE fb topramezone

0.040 kg/ha at 20-25 DAS.

W4 Farmer practices –2 hoeing 15-20 Days


Farmer practices –2 hoeing 15-20 Days


W5 Weedy check Weedy check

The quantity of fertilizer in each Split will be done through fertigation

Kharif maize Rabi chickpea

Quantity of fertilizer to be

applied

Stage of crop

(DAS)

Quantity of fertilizer to

be applied

Stage of crop (DAS)

10% RDNK Basal 50% RDNK Basal



25% RDNK 60 DAS

20% RDNK 80 DAS

DAS- Days after sowing, RDNK – Recommended dose of N & K

Source of fertilizer – N and K through straight fertilizer i.e. Urea and murate of postash (White-water

soluble) through drip. Phosphorus applied in the form of single super phosphate as a basal.

Design: Split Plot Design Replications: 3, Plot Size:- 4.8 X 6.0 M2

Observations: As given under WP 1.1.

WP 1.1.3 Weed management in blackgram/greengram/chickpea/ pigeonpea crops and

cropping systems

Udaipur

WP 1.1.3.1 Evaluation of pre and post emergence herbicides against complex weed flora in

blackgram (Vigna mungo (L.) Hepper) Kharif season

Objectives:

To study the bio-efficacy of combination of herbicides against complex weed flora and their effect on growth and yield of blackgram.

To study the phytotoxic effects on the crop, if any.

Treatments:

Sr.

No.

Herbicides Dose (g/ha) Time of application

1. Pendimethalin fb MC and HW at 40 DAS 750g PE (2 DAS )

2. Imazethyr + pendimethalin (RM) fb mechanical weeding at 40 DAS

750

PE (2 DAS )

3. Imazethapyr fb mechanical weeding at 40 DAS 60g PoE (15-20 DAS)

4. Imazethyr + imazamax fb mechanical weeding at 40 DAS

60g PoE (15-20 DAS)

5. Acifluorfen + clodinofop propargyl (RM) 245 g PoE (15-20 DAS)

6. Imazethapyr + quizalofop-ethyl (TM) 60g + 60g PoE (15-20 DAS)

16

7. Imazethapyr + propaquizafop (TM) 60g + 75g E PoE (15-20 DAS)

8. Oxyfluorfen + imazethapyr 10% SL 150g+75g PE (2 DAS)+ PoE (15-20 DAS)

9. Pendimethalin 3 +imazethapyr 750g + 60g

PE (2 DAS)+

PoE (15-20 DAS)

10. IC fb hand weeding at 20 and 40 days after sowing

11. Weedy check - -

Experiment details:

Design: RBD Plot size: Gross: 3.6 m x 5.0 m; Net: 2.4 m x 4.0 m Replications: 3


Guntur (Volunteer center)

WP 1.1.3.2 Evaluation of sustainable weed management practices in different cropping systems

under Irrigated -Dry conditions for Krishna zone of Andhra Pradesh.

Site of the experiment: RARS, Lam, Guntur.

Objectives:

To study cropping systems for Krishna zone of AP with some diversification over, traditional cropping systems.

To evaluate different weed management practices for their sustainability in different cropping systems

Treatments:

Main plots (cropping systems)

1. Redgram + greengram intercropping (June to – February)- Fodder sorghum (March –

April)

2. Greengram (June to August) – Rabi redgram (Sept. to February) - fodder sorghum (March

– April)

3. Greengram (June to August) – Maize (Sept. to December) – fodder sorghum (March –

April)

Sub- plots (weed management practice)

1. Pre-emergence herbicide fb inter cultivation

2. Pre-emergence herbicide fb post emergence herbicide

3. Hand weeding at 20-25 DAS fb Intercultivation

4. No weeding (only Intercultivation)

Treatment

Crop Spacing Herbicides Dosage

PRE POST PRE POST

Redgram Kharif-180 x 20 cm

Rabi-90 x 10 cm

Pendimethalin Imazethapyr 1000g/ha 50 g/ha

Greengram 30 x 10 cm Pendimethalin Imazethapyr 750 g/ha 50 g/ha

Maize 60 x 20 cm Pendimethalin Tembotrione 1000g/ha 120 g/ha

Design: Split plot Replications: 3 Plot size: 5.4 m x 6.0 m Experimental area: 2000 m2


Other observations:

1. Production efficiency (kg/ha/day); land use efficiency and economics

2. Weed control efficiency (%)

17

Sabour (Volunteer centre)

WP 1.1.3.3 Evaluation of herbicide doses and application time of topramezone on different

chickpea varieties.

Objectives:

To study the effect of herbicide doses and time of application on growth and yield of chickpea.

To study the relative performance of herbicide doses and application time against weed flora in chickpea.

Technical programme of work

A. Main plot treatments (2 Varieties)

1. GCP105

2. Sabour chana-1

B. Sub plot treatments: (3 Time of herbicide application)

1. 20-25 DAS

2. 25-30 DAS

3. 30-35 DAS

C. Sub-sub plot treatments: (4 Doses of herbicide application)

1. 0 g

2. 25 g

3. 30 g

4. 35 g

Design: Split-Split Plot Replications : 3 Spray volume: 500 L/ha



WP 1.1.3.4 Studies on herbicidal effect of imazethapyr and its ready-mix with imazemox and

pendimethalin against weeds in blackgram and their residual effect on succeeding

mustard crop

Objectives:

To study the bio-efficacy of different herbicides against weeds and their effect on growth and yield of blackgram.

To study the phytotoxic effects on the blackgram, if any.

To study the residual effect of herbicides applied in blackgram on succeeding mustard crop

Treatments:

Herbicides Dose (g/ha) Time of

application

T1 Imazethypyr 50 g PE

T2 Imazethypyr 60 g PE

T3 Imazethypyr 50 g (3-4 leaf stage)

T4 Imazethypyr 60 g (3-4 leaf stage)

T5 Imazethypyr + imazamox (RM) 50 g PE

T6 Imazethypyr + imazamox (RM) 60 g PE

T7 Imazethypyr + imazamox (RM) 50 g (3-4 leaf stage)

T8 Imazethypyr + imazamox (RM) 60 g (3-4 leaf stage)

T9 Pendimethalin 1000 g PE

T10 Imazethypyr + pendimethalin (RM) 1000 g PE

18

T11 Hoeing (2) ----------- 15 and 30 DAS

T12 Weedy check ---- ----

T13 Weed free ---- ----



WP1.1.3.5 Weed dynamics and productivity of chickpea (Cicer arietinum) under pre- and post-

emergence application of herbicides.

Objectives:

To study the bio-efficacy of different herbicides against weeds

To study the effect of weed control measures on growth and yield of chickpea

To assess the efficacy of weed management methods on economics of chickpea

Treatments:

Treatments Herbicide/ treatments Rate of application

(g/ha)

Time of

application

T1 Weedy check

T2 Weed free Upton 60 days

T3 Pendimethalin + 1 HW 1000 PE

T4 Oxyfluorfen + 1 HW 100 g PE

T5 Imezathapyr 40 g 20 DAS (PoE)

T6 Quizalofop-ethyl 50 g 25-30 DAS (PoE)

T7 Topramezone 20g PoE

T8 Topramezone 25g PoE

T9 Clodinafop-propargyl + Na-acifluorfen 500g PoE

T10 Pendimethalin + imazathapyr 1000 g+ 40 g PE + PoE

T11 Pendimethalin + quizalofop-ethyl 1000 g+ 50 g PE + PoE

T12 Oxyfluorfen + imazathapyr 100 g+ 40 g PE + PoE

T13 Oxyfluorfen + quizalofop-ethyl 100 g+ 50 g PE + PoE

Replications-3; Design- RBD; Plot size – 5x3 m= 15 m2 Chickpea variety JG-14



WP 1.1.3.6 Weed management in sesame under chickpea – sesame cropping sequence.

Objectives:

To study the effect of different weed control methods against weeds.

To study the effect of weed control methods on growth, yield and economics of sesame.

Replication- 3 Design: RBD

Plot size: 15 sqm Total area 700-800 sqm

Treatments:

T1- Un-weeded Check

T2- Two hand weeding

T3- Pendimethalin 1 kg/ha

T4- Imezathapyr 0.04 kg/ha PE

19

T5- Imezathapyr 0.04 kg/ha Early PoE

T6 -Pendimethalin 1 kg/ha + 1HW

T7- Imezathapyr 0.04 kg/ha PE + 1 HW

T8- Quizalofop-p-ethyl 0.05 kg/ha PoE


Thrissur

WP 1.1.3.7 Integrated weed management in greengram in summer rice fallows

Objective:

To develop integrated weed management strategy for greengram

Treatments:

1. Stale seed bed for 14 days followed by shallow digging 2. Stale seed bed for 14 days followed by shallow digging, followed by oxyfluorfen, 0.15 kg/ha, 0-3

DAS

3. Oxyfluorfen, 0.15 kg/ha, 0-3 DAS followed by one hand weeding at 25 DAS 4. Imazethapyr, 50 g/ha 0-3 DAS followed by one hand weeding at 25 DAS 5. Imazethapyr + imazamox (pre-mix), 80 g/ha 0-3 DAS followed by one hand weeding at 25 DAS 6. Diclosulam, 15 g/ha 0-3 DAS followed by one hand weeding at 25 DAS 7. Hand weeding at 20 and 40 DAS 8. Unweeded control

Design: RBD; Replications: 3; Plot size: 20 sq. m; Season: Summer 2020

The crop will be sown in November, after harvest of Kharif rice.


Hisar

WP 1.1.3.8 Evaluation of herbicides against complex weed flora in pigeonpea

Objectives:

To study the bio-efficacy of combination of herbicides against complex weed flora and their effect on growth and yield of pigeonpea

To study the phytotoxic effects on crops, if any

Treatments:

S.No. Treatments Dose (g/ha) Time of

application

1. Pyroxasulfone fb imazethapyr 127.5 & 100 PRE & PoE

2. Pendimethalin fb one mechanical weeding 1500 PRE & 45 DAS

3. Pendimethalin fb imazethapyr 1500 & 100 PRE & PoE

4. Pendimethalin fb one mechanical weeding 1000 PRE & 45 DAS

5. Pendimethalin fb imazethapyr + imazamox (RM) 1500 &40 PRE & PoE

6. Pendimethalin + imazethapyr EC (RM) fb one mechanical weeding

1000 PRE &PoE fb 45

DAS

7. Propaquizafop + imazethapyr (RM) 50+75 PoE

8. Pendimethalin + imazethapyr (TM) 1000 +75 PRE

9. Two mechanical weedings (manual hoe/power weeder) - 20 and 45 DAS

10. Weedy check - -

11. Weed free - -

20

*Pigeon pea is planted at distance of 45 cms R- R spacing. At 45 DAS, only manual hoe is possible to

avoid damage to crop plants. Weed free treatment means to keep the plot weed free as and when weeds

appear. The yield obtained in various treatments will be compared with this and weedy check treatment.

Design: RBD Replications: 3 Plot size: 6 x 6 M Spray volume: 500 L/ha


WP 1.1.4 Weed management in groundnut based system

Bhubaneswar

WP 1.1.4.1 Weed management and fertility levels on growth, yield and soil health in groundnut – okra cropping system

Objective:

To find out the effect of weed management practices along with fertility levels (organic & inorganic) on soil health in groundnut-okra cropping system.

Treatments:

Kharif (Ground nut)

Fertility levels:

T1: 100 % Recommended dose of fertilizer

T2: 75% Recommended dose of fertilizer + 25% N through FYM


T4: Without fertilizer + Without FYM

Weed management practices:

T1: Pre-emergence application of pretilachlor 0.5 kg/ha (2 DAS)

T2: Earle post emergence application of imazythapyr 0.075 kg/ha (15 DAS)

T3: Manual weeding (20 & 40 DAS)

T4: Twin wheel hoe fb HW at 40 DAS

Rabi (Okra)

Fertility levels:

T1: 100 % Recommended dose of fertilizer



T4: Without fertilizer + Without FYM

Weed management practices:

T1: Pre-emergence application of pendimethalin 0.75 kg/ha (2 DAS)

T2: Pre emergence application of pretilachlor 0.5 kg /ha (15 DAS)

T3: Manual weeding (20 & 40 DAS)

T4: Twin wheel hoe fb HW at 40 DAS

Design: Factorial RCBD with 4 replications, Plot size: 25 m2 (5 m x 5m)


Udaipur

21

WP 1.1.4.2 Integrated weed management in groundnut-wheat cropping system

Objectives:

To evaluate the efficacy of different weed management practices on weeds in groundnut-wheat cropping system

To study the effect of different weed management practices on growth and yield

Crop: Groundnut; Year of commencement: Kharif, 2020

Tr.

No.

Treatments Dose g/ha Time of

application

T1: Pendimethalin + imazethapyr (RM) 750 PE

T2: Oxyfluorfen fb imazethapyr 180 fb

100

PE fb POE

T3: Oxyfluorfen fb imazamox + imazethapyr (Pre-mix) 180 fb 70 PE fb POE

T4: Imazethapyr fb IC + HW at 40 DAS 100 POE

T5: Imazethapyr + propaquizafop (RM- Shaked) 125 POE

T6: Imazethapyr + propaquizafop

(RM- Shaked) fb IC + HW at 40 DAS

125 POE

T7: Imazethyr + imazamax (Pre-mix) 70 POE

T8: Imazethyr + imazamax (Pre-mix) fb HW at 40 DAS 70 POE

T9: Fluazifop-p-butyl + fomesafen (Pre-mix) 250 POE

T10: Fluazifop-p-butyl + fomesafen (Pre-mix) fb IC + HW at

40 DAS

250 POE

T11: IC fb HW at 20 and 40 DAS - -

T12: Farmers practice - -

Crop: Wheat; Year of commencement: Rabi, 2020-21

Treatment:

Tr.

No.

Treatments Dose

g/ha

Time of

application

T1: Carfentrazone-ethyl 20 POE at 35 DAS

T2: Sulfosulfuron 25 POE at 35 DAS

T3: Metsulfuron-methyl 4 POE at 35 DAS

T4: Carfentrazone-ethyl + sulfosulfuron 500 POE at 35 DAS

T5: Pinoxaden + carfentrazone (Tank mix) 60+20 POE at 35 DAS

T6: Clodinafop- propargyl

+ carfentrazone (Tank mix)

60+20 POE at 35 DAS

T7: Sulfosulfuron + metsulfuron (Premix) 30+2 POE at 35 DAS

T8: Pinoxaden + metsulfuron (Tank mix) 60+4 POE at 35 DAS

T9: Mesosulfuron + iodosulfuron (Premix) 12 + 2.4 POE at 35 DAS

T10: Clodinafop propargyl + metsulfuron-methyl ( Premix) 60 + 4 POE at 35 DAS

T11: Two hand weedings at 30 and 45 DAS

T12: Weedy check

Note:

DAS = Days After Sowing

HW = Hand Weeding

PE = Pre emergence

PoE = Post emergence (25-30 DAS)

EPoE = Post emergence (10-15 DAS)

Experimental details

22

Design: RBD Replications: 03 Plot Size: Gross: 3.6 m x 5.0 m; Net: 2.4 m x 4.0 m

Observations: 1. Plant stand (no./m row length) at 15 DAS and at harvest 2. Plant height (cm) at 30 and 60 DAS and at harvest 3. Weed count (no./m2) and weed dry biomass (g/m2) (Monocot and Dicot group wise) at 30

and 60 DAS & at harvest

4. Phytotoxicity on crop, if any at 7 and 14 days after herbicide application (0 to 10 scales) 5. Weed control efficiency (%) 6. Pod and haulm yield (kg/ha) 7. Microbial properties after application of herbicides (30 DAS and harvest) 8. Carry over effect on succeeding groundnut crop 9. Economics

WP 1.1.5: Weed management in cotton based inter cropping system

Hyderabad

WP 1.1.5.1 Integrated weed management in cotton based inter cropping system

Objectives:

To study the effect of pre and post emergence herbicides on weed growth in cotton under intercropping

To study the integrated weed management practices on growth and yield of cotton under intercropping

To study the economics of weed management in intercropped cotton

Treatments:

Main plots: Intercrops

1. Sole cotton

2. Cotton + sesame (non-legume)

3. Cotton + soybean (legume)

4. Cotton + dhaincha (green manure crop ) and mulching at 45 DAS

Sub- plots: Weed Management Methods

Sole cotton Cotton +

soybean

Cotton + sesame Cotton +

Dhaincha

W1 IWM

Diuron 0.75 kg/ha

(PE) fb intercultivation

at 30 and 45 DAS

Pendimethalin

640 g/ha (PE) fb

hand weeding at

30 and 45 DAS

Pendimethalin

640 g/ha (PE) fb

hand weeding at

30 and 45 DAS

Pendimethalin

640 g/ha (PE) fb

hand weeding at

30 DAS and

incorporation of

Dhaincha at

40DAS

W2 Herbicidal control

Diuron 0.75kg/ha (PE)

fb pyrithiobac sodium

62.5 g/ha +

quizalofop-ethyl 50

g/ha (POE) at 2-3 leaf

stage of the weeds

Pendimethalin38.

7 CS 640 g/ha

(PE) fb

quizalofop- ethyl

45 g/ha (POE, 25

DAS)

Pendimethalin

640 g/ha (PE) fb

quizalofop ethyl

45 g/ha (POE, 25

DAS)

Pendimethalin

640 g/ha (PE) fb

quizalofop- ethyl

45 g/ha (POE, 25

DAS)

W3 Hand

weeding/Mechnaical

control

30 and 60 DAS 30 and 60 DAS 30 and 60 DAS 30 and 30 DAS

23

Design: Split plot; Replications: 3 ; Plot size: 5.4 x 4.2 m



WP 1.1.5.2 Integrated weed management in cotton based inter cropping system

Objectives

To study the effect of pre and post emergence herbicides on weed growth in cotton under intercropping

To study the integrated weed management practices on growth and yield of cotton under intercropping

To study the economics of weed management in intercropped cotton

Treatments:

Main plots: Intercrops

1. Sole cotton

2. Cotton + sesame (non-legume)

3. Cotton + greengram/blackgram (legume)

4. Cotton + dhaincha (green manure crop ) and mulching at 45 DAS

Sub- plots: Weed Management Methods

Sole cotton Cotton +

soybean

Cotton + sesame Cotton +

Dhaincha

W1 IWM

Pendimethalin 640

g/ha (PE) fb hand

weeding at 30& 45

DAS

Pendimethalin

640 g/ha (PE) fb

hand weeding at

30 and 45 DAS

Pendimethalin

640 g/ha (PE) fb

hand weeding at

30 and 45 DAS

Pendimethalin

640 g/ha (PE) fb

hand weeding at

30 DAS and

incorporation of

Dhaincha at

45DAS

W2 Herbicidal control

Pendimethalin 640

g/ha (PE) fb

pyrithiobac-sodium

62.5 g/ha +

quizalofop- ethyl 50

g/ha (POE) at 2-3 leaf

stage of the weeds

Pendimethalin38.

7 CS 640 g/ha

(PE) fb

quizalofop -ethyl

45 g/ha (POE, 25

DAS)

Pendimethalin

640 g /ha (PE) fb

quizalofop ethyl

45 g /ha

(POE,

25 DAS)

Pendimethalin

640 g/ha (PE) fb

quizalofop-ethyl

45 g/ha (POE, 25

DAS)

W3 Hand

weeding/Mechnaica

l control

30 and 60 DAS 30 and 60 DAS 30 and 60 DAS 30 and 30 DAS

Design: Split plot Replications: 3 Plot size: 5.4 x 4.2 m


WP 1.1.6 Weed management in millets

Hyderabad

24

WP 1.1.6.1 Bio-efficacy and phytotoxicity of herbicides and herbicide mixtures for weed control in

finger millet.

Year of Initiation: 2020-21 Duration: 2 years

Objectives:

To study the bio-efficacy of herbicides and herbicide combinations on weed growth in fingermillet

To find out the phytotoxicity of herbicides if any and effect on growth and yield of fingermillet

To find out the economic combination of pre and post emergence herbicides for finger millet

Treatments:

T1: Isoproturon 750 g/ha as PE fb bispyribac-sodium 15 g/ha as POE

T2: Oxadiargyl 80 g/ha at as PE fb bispyribac-sodium 15 g/ha as POE

T3: Bensulfuron methyl + pretilachlor 660 g / ha as PE fb bispyribac-sodium 15 g/ha as POE

T4: Isoproturon 750 g/ha as PE + metsulfuron-methyl fb chlorimuron-ethyl 4g/ha as POE

T5: Oxadiargyl 80g/ha at as PE metsulfuron-methyl fb chlorimuron-ethyl 4 g/ha as POE

T6: Bensulfuron-methyl + pretilachlor 6% GR 660 g/ha as PE fb metsulfuron-methyl + chlorimuron-

ethyl 4g/ha as POE

T7: Isoproturon 750g/ha as PE fb mechanical weeding at 30 DAT

T8: Oxadiargyl 80% WP 80g/ha at as PE fb mechanical weeding at 30 DAT

T9: Bensulfuron methyl + pretilachlor 660 g/ha as PE fb mechanical weeding at 30 DAT

T10: Hand weeding twice at 20 DAT and 40 DAT

T11: Weedy check

Design: RBD; Gross Plot Size: 4.8 m x 4.0 m; Net Plot Size :4.2 m x 3.4 m; Spacing :

(30ҳ10cm)



WP 1.1.6.2 Weed management in transplanted finger millet

Objectives:

To study the influence of weed management on weed dynamics, crop growth and productivity

To study the influence of weed management treatment on economics

Treatments:

Treatment Dose (g/ha) Time (DAP)

T1 Stale seed bed technique alone (SSB)*

T2 Intercultivation (IC) twice 100 20 & 40

T3 Bensulfuron methyl+pretilachlor (PE) 60+600 0-3

T4 Bispyribac-sodium (PoE) 20 20

T5 Stale seed bed technique alone fb bensulfuron-

methyl+pretilachlor

60+600 0-3

T6 Stale seed bed technique alone fb bispyribac- sodium 20 20

T7 Bensulfuron methyl+pretilachlor fb intercultivation

(IC) once

60+600 0-3/ 40

T8 Bispyribac- sodium fb intercultivation (IC) once 20 20/ 40

T9 Bensulfuron methyl+pretilachlor fb hand weeding

once

60+600 0-3/ 40

T10 Bispyribac-sodium fb hand weeding once 20 20/ 40

T11 Hand weeding twice 20 & 40

25

T12 Unweeded control

Glyphosate will be sprayed 15 days before experiment in the SSB Season: June 2020- Aug 2020 Design:RBD; Replications:3


Kalyani

WP 1.1.7: Identification of suitable weed management strategy in lentil under rainfed situation

Objectives:

To study the effect of different control measures on weeds, crop growth and yield of lentil.

To study the efficacy of post emergence herbicides on weeds in lentil. To study the economics of weed control measures in the trial.

Treatments:

Treatments Lentil

T1 Metolachlor PE 1.0 Kg/ha fb quizalofop-ethyl 0.05kg/ha PoE

T2 Metolachlor PE 1.0 Kg/ha fb one hand weeding at 25 DAS

T3 Pendimethalin 1000 g/ha PE

T4 Isoproturon 750 g/ha post-emergence

T5 Pendimethalin + imazethapyr (960 + 40 g/ha) PE

T6 Pendimethalin + imazethapyr (720 + 30 g/ha) PE

T7 Pendimethalin + isoproturon (1000 + 750 g/ha) PE

T8 Mechanical weeding by hand grubber

T9 Hand weeding at 20 DAS

T10 Weedy check (control)

Design of experiment: RCBD Replication: 3 Plot size: 5m x 4m



WP 1.1.8: Study of weed flora and its management in lentil under temperate condition

Objectives:

To study the effect of weed management practices on weed dynamics and control of weeds

To study the effect of weed management practices on growth and productivity of lentil

Treatments: i. Pendimethalin (1kg/ha PE)

ii. Pendimethalin (1 kg/ha PE) fb prometryn (0.5 kg/ha POE) iii. Pendimethalin (1 kg/ha PE) fb fluazifop-p-butyl (0.1 kg/ha POE) iv. Pendimethalin (1 kg/ha PE) fb quizalofop-p-ethyl (0.05 kg/ha POE) v. Pendimethalin (1 kg/ha PE) fb imazethapyr (0.04 kg/ha POE)

vi. Pendimethalin (1 kg/ha PE) fb two manual weeding (spring) vii. Prometryn (0.5 kg/ha PE)

viii. Prometryn (0.5 kg/ha PE) fb fluazifop-p-butyl (0.1 kg/ha POE) ix. Prometryn (0.5 kg/ha PE) fb quizalofop-p-ethyl (0.05 kg/ha POE) x. Prometryn (0.5 kg/ha PE) fb imazethapyr (0.04 kg/ha POE)

xi. Prometryn (0.5 kg/ha PE) fb two manual weeding (spring) xii. Three manual weeding at 20 days interval during spring

26

xiii. Weedy check

Design: RBD Replication: 03; Plot size: 3.75 m x 4.00 m


Pantnagar

WP 1.1.9: Management and in situ utilization of weeds in different cropping systems.

(Collaboration with Net work project on Integrated Farming Systems)

Objectives:

To find out the weed management practices under cropping system

Management and utilization of the weeds in situ under different cropping systems

A. Management and utilization of weeds in situ under agri - horti cropping system

Litchi + peach

Black gram-coriander- maize

Existing treatment

Blackgram-Pendimethalin 1.0 kg/ha (Pre-emergence)

Coriander – Pendimethalin 1.0 kg/ha (pre-emergence)

Maize – Atrazine 500 g/ha (pre-emergence) fb one hand weeding

Suggested treatment

Blackgram- Imazethapyr 100 g/ha (Post-emergence)

Coriander – Pendimethalin 1.0 kg/ha (pre-emergence) fb one hand weeding

Maize – Topramezone 33.6 g/ha (Post-emergence) fb one hand weeding

Plot size: 63m x 27m

The data will be analyzed by using T- test

B- Widely spaced sugarcane & maize

Sugarcane:

Existing treatment

Sugarcane single row (spacing75cm)-Atrazine 1.0 kg/ha (Pre-emergence) fb two hand weedings

Suggested treatment

Sugarcane paired row (spacing 120 cm)-Topramezone 25 g/ha (Post-emergence) fb Mechanical

weeder



Maize:

Existing treatment

Atrazine 500 g/ha (Pre-emergence) fb one hand weeding

Suggested treatment

Topramezone 33.6 g/ha Post-emergence



Observations:

27

1. Weed density and dry weight (species wise and total) at different crop growth stages 2. Energy & economics 3. Productivity


WP 1.1.10: Weed flora study in nursery and high density orchard of apple.

Objectives:

To study the effect of weed management practices on weed dynamics in apple high density orchard

To study the effect of weed management practices on growth of apple plants

To work out the effect of weed management practices on weed control performance indices

Treatments:

i. Pendimethalin (PE 1.0 kg/ha)

ii. Atrazine (PE 1.0 kg/ha)

iii. Pendimethaline (PE 1.0 kg/ha) fb glyphosate (*POE 1.0 kg/ha)

iv. Atrazine (PE 1.0 kg/ha) fb glyphosate (*POE 1.0 kg/ha)

v. Pendimethalin (PE 1.0 kg/ha) fb paraquat (*POE 1.0 kg/ha)

vi. Atrazine (PE 1.0 kg/ha) fb paraquat (*POE 1.0 kg/ha)

vii. Weed free

viii. Weedy check

* Protected spray of POE herbicide

Design: RBD; Replication: 3;

Plot size: 7.5 m row line with spacing of 1.5 m plant to plant i.e. 5 plants in each row

Observations:

1. Weed density (Number/m2) at 30 and 60 days after first spray 2. Weed dry matter (g m-2) at 30 and 60 days after first spray 3. Number of branching 4. Number of leaves 5. Fruit yield 6. Economics analysis

Jammu

WP 1.1.11: Effect of different weed management practices in marigold

(Collaboration with Division of Vegetable & Floriculture, SKUAST-Jammu)

Objectives:

To study the effect of integrated weed management in marigold

Treatments:

S. No. Treatment

1. Pendimethalin 1.5 kg/ha as PE

2. Oxyfluorfen 200 g/ha as PE

3. Quizalofop ethyl 50 g/ha as POE

4. Propaquizafop 50 g/ha as POE

5. Propaquizafop 100 g/ha as POE

6. Pendimethalin 1.5 kg/ha as PE fb quizalofop-ethyl 50 g/ ha as POE

28

7. Oxyfluorfen 200 g/ha as PE fb quizalofop-ethyl 50 g/ ha as POE

8. Pendimethalin 1.5 kg/ha as PE fb propaquizafop 50 g/ha as POE

9. Oxyfluorfen 200 g/ha as PE fb propaquizafop 50 g/ha as POE

10. Pendimethalin 1.5 kg/ha as PE fb propaquizafop 100 g/ha as POE

11. Oxyfluorfen 200 g/ha as PE fb propaquizafop 100 g/ha as POE

12. Pendimethalin 1.5 kg/ha as PE fb 1 HW

13. Oxyfluorfen 200 g/ha as PE fb 1 HW

14. Quizalofop ethyl 50 g/ ha as POE fb 1 HW

15. Propaquizafop 50 g/ha as POE fb 1 HW

16. Propaquizafop 100 g/ha as POE fb 1 HW

18. Mechanical weeding 20 & 40 DAS

Experiment details: Design: RBD Replications: 3 Plot size: 4 m X 4 m

Observations:

1. Weed density and dry weight (species wise and total) at different crop growth stages 2. Plant height, branches/plant, flower/ plant and flower yield/ha. 3. Economics analysis 4. Phytotoxicity on crops, if any

Pantnagar

OLD

WP 1.1.12: Evaluation of different herbicides in spring planted sugarcane

Objectives:

To find out the effect of different herbicides on weeds, growth and yield of sugarcane.

To observe the phytotoxicity of different herbicides on sugarcane.

To work out economics of different treatments.

Treatments:

S. No. Treatments Dose (g/ha) Time of application

Metribuzin 1000 PRE

Metribuzin + haosufuron methyl (TM) 1000+67.5 PRE

Atrazine 2000 PRE

Atrazine + halosulfuron (TM) 2000+67.5 PRE

Metribuzin +halosulfuron (TM) 1000+67.5 PoE 40 DAP

Atrazine + halosulfuron (TM) 2000+67.5 PoE 40 DAP

Metribuzin fb halosulfuron 1000 & 67.5 PRE fb 40 DAP-PoE

Atrazine fb halosulfuron 2000 & 67.5 PRE fb 40 DAP-PoE

Sulfentrazone fb hoeing fb 2,4-D 720 & 1000 PRE fb 45 DAP fb 60 DAP-PoE

Sulfentrazonefb hoeing fb almix 720 & 4 PRE fb 45 DAP fb 60 DAP-PoE

Atrazine fb 2,4-D 2000 & 1000 PRE fb 60 DAP-PoE

Hoeing after first irrigation fb atrazine after

second irrigation

2000 POE to sugarcane but PRE to

weeds

Glyphosate (41% SL) + metribuzin+ surfactant

(1%)-(TM)

1860 + 1000 15 DAS-EPoE

Atrazine fb metsulfuron + carfentrazone (RM) 2000 & 25 PRE fb PoE-60 DAP

Atrazine fb hoeing fb topramizone 2000 & 25 PRE fb 45 DAP fb 60 DAP-PoE

Paraquat fb atrazine 800 & 2000 15 DAS-EPoE fb 60 DAP-PoE

29

Three hoeing (30, 60 and 90 DAP) - 30, 60 and 90 DAP

Mechanical weeding 20 and 40 DAS - -

Design: RBD; Replications: 3 Varieties: COP90223

Plot size: 4.5 m x 6.0 m Seed rate: 87.5 q/ha

Observations:

A)Weeds

1. Weed density and dry weight (species wise and total) at 45, 75, 105 and 135 DAP 2. Visual and actual weed control (%) at 45, 75, 105 and 135 days after planting

3. Phytotoxicity (%) of different treatments, if any ( 60 and 75 DAP)

4. Weed control efficiency (%) at 45, 75, 105 and 135 DAP

5. Weed index

B) Sugarcane

1. Germination per cent at 20 and 40 days after planting

2. Tiller count (000/ha) at monthly intervals 45, 75, 105 and 135 DAP

3. Light interception studies at 75 and 135 DAP

4. Dry matter accumulation of sugarcane (g/running metre) at 75, 135, 195, 255 DAP and at

harvest

5. Number of millable canes (000/ha), cane length (cm), single cane weight (g) and cane girth

(cm) at harvest

6. Cane yield (t/ha)

7. Commercial cane sugar (%) at harvest

8. Sugar yield (t/ha)

C) Economics

1. Variable cost (Rs/ha)

2. Gross returns (Rs/ha)

3. Net returns (Rs/ha)

4. B : C ratio

Kalyani

WP 1.1.13: Weed management in olitorius jute (Year of commencement: 2021)

Objectives:

To find out the effect of different weed control measures on weeds in jute.

To study the effect of different weed control measures on yield attributes and yield of jute.

To work out economics of different treatments

Treatments:

T1-Pretilachlor 750 g/ha at 2 DAS fb propaquizalofop 80 g/ha at 25 DAS

T2-Ipfencarbazone 70 g/ha immediately after sowing fb propaquizalofop 80 g/ha at 25 DAS

T3-Ipfencarbazone 90 g/ha immediately after sowing fb propaquizalofop 80 g/ha at 25 DAS

T4-Ipfencarbazone 70 g/ha immediately after sowing fb hand weeding at 30 DAS

T5-Ipfencarbazone 90 g/ha immediately after sowing fb hand weeding at 30 DAS

T6- Nail weeder at 12 DAS fb Thinning+hand weeding at 25 and 40 DAS

T7- Thinning+hand weeding at 12 DAS fb hand weeding at 25 and 40 DAS

T8-Intercropping with red amaranthus

T9-Weedy check

Design: RCBD; Replication: 3; Plot size: 4 m x 5 m

30


Bengaluru

WP 1.1.14 : Evaluation of herbicides against weed complex of french bean (Kharif) -field bean

(Rabi) cropping system

French beans as vegetables are quite popular in India. It is very tasty and also nutritious being

leguminous. Its tender beans and matured seeds both are used as vegetable. It is a short duration crop

mainly grown in Kharif. But if irrigation facilities are available, it can be grown in Rabi and summer

seasons.

Objectives:

To evaluate the effective methods of weed control on growth and yield of French Bean and Field bean cropping system

To study the effect of herbicides on growth and yield of French bean and Field bean cropping system on weed intensity and weed control efficiency.

To work out the economics.

Treatments:

Kharif - French bean Rabi - Field bean

T1- Pendimethalin 750 g/ha (PE)


T3- Oxadiargyl 60 g/ha (PE)

T4- Oxadiargyl 75 g/ha (PE)

T5- Oxyfluorfen 150 g/ha (PE)

T6- Oxyfluorfen 200 g/ha ((PE)

T7- Metribuzin 500 g/ha (PE)

T8- Metribuzin 750 g/ha (PE)

T9- Pretilachlor 500g/ha (PE)

T10- Pretilachlor 1000 g/ha (PE)

T11- One hand weeding at 25 DAS

T12- Weedy check


T2- Oxadiazone 200g /ha (PE)

T3- Oxadiazone 250 g/ha (PE)

T4- Oxadiagryl 60 g/ha (PE)

T5-Oxadiagryl 75g/ha (PE)

T6- Oxyflurofen100g/ha (PE)

T7- Oxyflurofen 125 g/ha (PE)

T8- Sodium aciflurofan + clodinafop-propargyl (206 +100 g/ha) (POE)

T9- Fluazifop-p-butyl + fomesafen 250 g/ha (POE)

T10-Imazethypyr 75g/ha (POE)

T11- Hand weeding twice

T12- Weedy check

Design: RCBD; Replications:03; Spacing: 45 x 30cm; Gross plot size: 5.4 m × 4.0 m


WP 1.2 Weed management under resource conservation techniques

WP 1.2.1 Weed management in different cropping systems under conservation agriculture

systems

Objectives:

To monitor weed dynamics, crop productivity, resource use efficiency and herbicide residues under long-term tillage and residue management practices

To study C-sequestration and changes in physico-chemical and biological properties of soil

Treatment: Given below centre-wise

Observations (To be taken in each experiment under WP 1.2)

1. Weed emergence - population (species-wise) and dry matter accumulation (category-wise –

a. sedge, grasses, BLW, total) at 30, 60 DAS/T and harvest and base year observations.

2. Crop growth parameters (plant height, dry matter production and no. of effective tillers,) at 60

31

a. DAS/DAT, and at harvest and yield (grain and straw) at harvest

3. Continuous monitoring of shift in weed species as compared to base year

4. Weed seed bank studies soil depth wise 0-10 cm and 10-20 cm depths soil samples just after summer and before kharif season. Minimum of 3 kg soils need to be collected and seed bank

study will be conducted in trays.

5. Energetic and economics of tillage and weed management practices

6. C-sequestration, physico-chemical and biological properties of soil– initial and after end of each

a. cycle

7. Effect on soil micro-flora (bacteria, fungi and actinomycetes) due to tillage and weed management practices

8. Instead of estimating microbial populations only estimation of beneficial microorganisms such as:

a. Total free nitrogen fixers b. Total P- solubilizing microorganisms c. Per cent root colonization by AM fungi at 50 DAS d. Soil microbial activity e. Microbial biomass carbon f. Soil respiration/urease, dehydrogenase and phosphatase activity

9. Quantify the amount of green manure added under different treatments. 10. Record visual observation may be recorded on Sesbania population for residual toxicity if any of

previous crops herbicides and can be compared to unweeded control

WP 1.2.1.1 Rice-based cropping systems

Bhubaneswar

OLD

WP 1.2.1.1.1 Weed management in rice-maize-cowpea cropping system under conservation

agriculture (Year of Commencement: Kharif- 2013)

Treatments:

A. Tillage and residue management (main plot) Tillage (main plot): Kharif (rice) Rabi (maize) summer (cow pea)

KharifV (rice) Rabi (maize) Summer

(cowpea)

T1 CT (Transplanted) CT CT

T2 CT (Transplanted) ZT ZT

T3 CT (Direct seeded) CT ZT

T4 ZT (Direct seeded) ZT+R ZT

T5 ZT+R(Direct seeded) ZT+R ZT+R

B. Weed control (subplot) H1 – Rice: Pretilachlor 0.75 g/ha; Maize: atrazine+pendimethalin (500+500 g/ha) /cow pea :

Pendimethalin 0.75 kg/ha:

H2 IWM (Rice: Mechanical weeding with herbicide Pretilachlor 0.75 kg/ha fb mw ; Maize/cow pea:

Pendimethalin 0.75 kg/ha with one manual weeding)

H3 – One hand weeding at 25 DAS

Design : Strip plot

32

Replication : Three

Plot size : 10×5 m2


SKUAST, Jammu

OLD

WP 1.2.1.1.2 Weed management in rice-wheat-green manure cropping system under conservation

agriculture (Year of commencement: Kharif 2016)

Collaboration: Division of Soil Science & Agri. Chem., SKUAST-Jammu.

Objectives:

To monitor weed dynamics, crop productivity and resource-use efficiency under long-term tillage and residue management practices


Treatments:

A. Tillage and residue management (main plot)

Treatment Kharif (Rice) Rabi (Wheat) Summer (Sesbania as green

manure)

1 CT (Transplanted) CT ZT Green manure

2 CT (Transplanted) ZT ZT Green manure

3 CT (Direct -seeded) CT ZT Green manure

4 ZT (Direct -seeded) ZT+R ZT Green manure

5 ZT (Direct -seeded) + R ZT + R ZT+ R Green manure

B. Weed management (sub plot)

Treatment Kharif (Rice) Rabi (Wheat) Summer

(Sesbania as

green manure)

1 Recommended

herbicides

DSR: Pendimethalin 1 kg/ha as

PE fb bispyribac-sodium 25

g/ha

CT -Transplanted:

bispyribac-sodium 25 g/ha

Sulfosulfuron +

metsulfuron (30+2

g/ha) at 30 DAS

-

2 Integrated weed

management

(herbicide + hand

weeding)

DSR: Pendimethalin 1 kg/ha

as PE fb bispyribac-sodium 25

g/ha at 25 DAS fb HW at 45

DAS

CT Transplanted: bispyribac-

sodium 25 g/ha + 1 HW (45

DAT)

Sulfosulfuron +

metsulfuron (30+2

g/ha) at 30 DAS fb

HW at 45 DAS

-

3 Weedy check

One hand weeding after

observation at 60 DAS)

One hand weeding

after observation at 60

DAS)

-

Design: Split plot; Replications: 3; Plot size: 10 m x 8.8 m

Note: Residual studies in this experiment may not be allotted to Jammu centre.

Observations: as given under WP 1.2

Jorhat

33

WP 1.2.1.1.3 Weed management in rice-mustard-green manure cropping system under

conservation agriculture (Year of commencement Kharif 2016): The trial will

continue as approved.

OLD

Treatments:

Tillage and residue management (main plot)

Treatment Kharif (rice) Rabi (mustard) Summer (green manure)

1. CT (Transplanted) CT CT

2. CT (Transplanted MT MT

3. CT (Direct -seeded) CT MT

4. MT (Direct -seeded) MT+R MT

5. MT (Direct -seeded) + R MT + R MT + R

Weed management (sub plot)

W1-Recommended herbicides (Pretilachlor 0.750 kg/ha pre-em in rice, pendimethalin 0.750 kg/ha pre-em

in rapeseed,

W2-Integrated weed management (Pretilachlor 0.750 kg/ha pre-em in rice + one mechanical weeding,

pendimethalin 0.750 kg/ha pre-em in rapeseed + one mechanical weeding,

W3-One hand weeding/hoeing

W4-Weedy check

Design: Split plot; Replications: 3 ; Plot size: 20 x 10 m = 200 m2


Raipur

OLD WP 1.2.1.1.4 Weed management in rice-wheat-cowpea (fodder) cropping system under

conservation agriculture

Main plot treatments:

Tr Kharif Rabi Summer

T1 CT ( Transplanted) CT CT

T2 CT (Transplanted) ZT ZT

T3 CT (Direct Seeded) CT ZT

T4 ZT (Direct Seeded) ZT + R ZT

T5 ZT (Direct Seeded)+ R ZT + R ZT+R

Sub plot treatments:

Tr Kharif Rabi Summer

Recommended

herbicide

Pyrazosulfuron 0.02 kg/ha

fb penoxsulam 0.025 kg/ha

PoE

Clodinofop 0.06

kg/ha+ metsulfuron

0.004 kg/ha PoE

Pendimethalin 1.0 kg/ha

IWM (Integrated Weed

Management) Oxadiargrl 80 g/ha PE fb

HW at 25 DAT/S

Clodinofop 0.06 kg/ha

+ metsulfuron 0.004

kg/ha PoE fb HW at

40 DAS

Pendimethalin 1.0 kg/ha +

HW at 20 DAS

Unweeded Weedy check Weedy check Weedy check

Study Period: Kharif, Rabi and summer season of 2020-21 and 2021-22. Design : Split plot

Size: 12m X 4m; Replication:3


34

CCSHAU, Hisar

OLD

WP 1.2.1.1.5 Weed management in conservation agriculture systems in rice-wheat cropping system

Objectives:

To monitor weed dynamics, crop productivity and herbicide residues under long-term tillage and

residue management practices under CA.

To evaluate the effect on crop productivity and resource use efficiency

Treatments:


Treatment Kharif (Rice) Rabi (Wheat) Green manuring

1 CT (Transplanted) CT ZT green gram

2 CT (Transplanted) ZT wheat without residues ZT green gram

3 CT (Transplanted) ZT wheat(Happy seeder sown) with

partial residues (3 t/ha)

ZT green gram

4 CT (Transplanted) ZT wheat (Happy seeder sown) with

full residue

Load ( Give in t/ha quantify???)

ZT green gram

5 CT (Transplanted) ZT wheat (Happy seeder sown) with

full residue load Give in t/ha

quantify???) + microbial consortia/

waste decomposer

ZT green gram

B. Weed management (sub plot)

Kharif

1. Recommended herbicides – Pretilachlor 1000 g/ha, PRE 2. Integrated weed management – Pretilachlor 1000 g/ha, PRE + One HW at 40 DAS 3. Weedy check – (One HW weeding at 60 DAT after taking weed observation)

Rabi

1. Recommended herbicides – Mesosulfuron+iodosulfuron (RM) 14.4 g/ha, 35 DAS 2. Integrated Weed Management - Mesosulfuron+iodosulfuron (RM) 14.4 g/ha, 35 DAS + One HW

at 60 DAS

3. Weedy check – (One hand weeding after the critical period of crop-weed competition 60 DAS)

Design: Strip plot Replications: 3


Pantnagar

OLD

WP 1.2.1.1.6 Weed management in rice-wheat-Sesbania cropping system under conservation

agriculture

Objective: To monitor weed dynamics, crop productivity under long-term tillage and residue management

practices.

To evaluate the effect on crop productivity and resource-use efficiency.

35

To study changes in physico-chemical properties of soil.

Treatments:

Main Plot -Tillage and residue management

Kharif (Rice) Rabi (Wheat) Summer

M1 Transplanted rice Conventional wheat Fallow

M2 Transplanted rice + residue Inc. 6 t/ha Conventional wheat +residue Inc. 7

t/ha

Sesbania

(GM)

M3 Transplanted rice + residue Inc. 6 t/ha Zero tillage wheat + residue

retention 7 t/ha

Sesbania

(GM)

M4. Direct-seeded rice Conventional wheat Fallow

M5. Direct-seeded rice + residue Inc. 6 t/ha Conventional wheat +residue

retention 7 t/ha

Sesbania

(GM)

M6. Direct-seeded rice + residue Inc. 6 t/ha Zero tillage wheat +residue

retention 7 t/ha

Sesbania

(GM)

Sub Plot- Weed management

W1 Penoxsulam1w/w + cyhalofop –butyl w/w

OD 135 g./ha (15-20 DAS/DAT)

Clodinafop -propargyl + metsulfuron- methyl

+4g/ha as post-emergence.

W2

IWM-Penoxsulam + cyhalofop –butyl 135

g/ha (15-20 DAS/DAT) fb one hand weeding

at 45 DAS/DAT)

IWM-Clodinafop -propargyl + metsulfuron-

methyl 60+4 g/ha as post-emergence fb One hand

weeding at 60 DAS)

W3 One hand weeding after 60 DAS One hand weeding after 60 DAS

Design: Split Plot Design Replications: 3 Main plot size: 36m x 4m

Note: Method of establishment ZT/CT need to be mentioned


Ludhiana

WP 1.2.1.1.7 Weed management in rice-wheat cropping system under conservation agriculture

Objectives: • To monitor weed dynamics, crop productivity, resource use efficiency and herbicide residues

under long-term tillage and residue management practices

• To study C-sequestration and changes in physico-chemical and biological properties of soil

Treatments:

A. Crop establishment, tillage and residue management S.No. Rice Wheat Green manure

1 Conventional tillage

(CT)- Puddled

transplanted rice (PTR)

CT wheat (rice residue removed) -

2 CT-PTR CT wheat (rice residue incorporated ZT+R Green manure

3 CT-PTR ZT wheat (rice residue retention on surface

-sowing with Happy seeder)

ZT+R Green manure

4 CT-Direct seeded rice ZT wheat (rice residue retention on

surface-sowing with Happy seeder)

ZT+ R Green manure

B. Weed management 1. Unweeded check (One hand weeding may be done after the critical period of crop-weed

competition i.e. between 45- 60 days after sowing)

2. Recommend herbicides (Rice: Pendimethalin 1.0 kg/ha as pre-emergence followed by bispyribac-sodium 25 g/ fenoxaprop 67.5 g/ chlorimuron + metsulfuron 4 g/ha depending on

weed flora present in the field; Wheat: Clodinafop + metribuzin 275 g/ha as post-emergence.

36

3. IWM (Recommended herbicides followed by hand weeding)

Design: Split-plot ; Main plot- 30m x4.5m; Sub plot- 10m x 4.5m; Replications: 3


Kalyani

OLD

WP 1.2.1.1.8 Weed management in rice-rapeseed-green gram cropping system under conservation

agriculture

Objectives: • To monitor weed dynamics, crop productivity, resource use efficiency and herbicide residues under

long-term tillage and residue management practices

• To study C-sequestration and changes in physico-chemical and biological properties of soil

Treatments


CT- Conventional tillage (3-4 cultivation followed by planking)

MT- Minimum tillage (Use of 1 pass rotovator)

R- Residue of previous crop retained in-situ on soil surface

Design of experiment: Split plot Replication: 3Plot size: 5m x 4m


WP 1.2.2.2 Maize based cropping system

Bengaluru

OLD

WP 1.2.2.2.1 Weed management in maize based cropping system in conservation agriculture

[Kharif-(Maize)- Rabi- (greengram)- Summer – maize)

Objectives:

To monitor weed dynamics, crop productivity and herbicide residues under long-term tillage and residue management practices

To evaluate the effect on crop productivity and resource-use efficiency

Treatment Kharif (rice) Rabi (rapeseed) Summer ( greengram)

Main plot: (Tillage and residue management)

1 CT (Transplanted) CT + R CT

2 CT (Transplanted) MT MT

3 CT (Direct -seeded) CT + R MT

4 MT (Direct -seeded) MT MT

5 MT(Direct -seeded) + R MT + R MT + R

Sub plot: Weed management

1 Pretilachlor 0.75 kg/ha PRE followed by

bispyribac-Na 25 g/ha at 25 DAT

Pendimethalin 1.0 kg/ha PRE Quizalofop-ethyl 50 g/ha at

20 DAS

2 Pretilachlor 0.75 kg/ha PRE followed by

bispyribac-Na 25 g/ha at 25 DAT fb

mechanical weeding at 50 DAT

Pendimethalin 1.0 kg/ha PRE

fb mechanical weeding at 30

DAT

Quizalofop-ethyl 50 g/ha at

20 DAS fb mechanical

weeding at 30 DAT

3 One hand weeding at 30 DAT One hand weeding at 30 DAT One hand weeding at 30

DAT

37


Treatment details: A. Main Plot Treatments - Tillage and Residue management

Treatment Kharif ( Maize) Rabi –(Greengram) Summer ( Maize)

T1 Conventional Tillage

*(CT)

Conventional Tillage ( CT) +

Maize residue

Fallow

T2 *Zero Tillage (ZT) Zero Tillage (ZT) + Maize

residue

Zero Tillage + GG residue

T3 *Minimum Tillage (MT) Minimum Tillage (MT) +

Maize residue

Minimum Tillage + GG

residue

T4 Zero Tillage(ZT) +

Maize residues

Minimum Tillage + Maize

Residue

Minimum Tillage + GG

residue

T5 *Permanent Bed (PB) Permanent Bed (PB)+ Maize

residue

Permanent Bed (PB)+ GG

residue

Initially the field is deep tilled (to 30 cm depth) using plough to break the hard pan below the plough layer

before stat of experiment

*CT – Conventional tillage –involved one ploughing each with disc harrow followed by rotavator.

*ZT –No tillage, soil and the surface residues are minimally disturbed, opening a slice for placing seed /

fertilizer leaves inter-row areas undisturbed except for the opening of a narrow (2-3 cm wide) strip or

small hole in the ground for seed placement to ensure adequate seed/soil contact.

*R – Crop residues – all residues produced to be retained in situ on soil surface.

*MT- A broad plough is used to disrupt the top layer of soil only few centimetres or single ploughing

prior to sowing followed by strip-tilling rows with hand-held hoes to sow maize seed. if the soil to be

intact and non penetrate.

*PB- In bed planting wide beds with furrow are prepared where the maize seeds are precisely placed at

required depth 3-4 cm. After preparing the fresh beds during first year these can keep as permanent beds

for subsequent year with keeping crop residue and reshape if required after harvest of the crop. One line

of maize on each bed is desirable when sole crop of maize is planted keeping seed to seed spacing at 30

cm.

Weed management practices (Sub Plot)

Design: Split plot Design;

Plot size: 15 m x 3.6 m

Replication: Three

Location: MRS, Hebbal


IWM Kharif ( Maize) Rabi ( GG) Summer ( Maize)

W1-

Recommended

herbicides

Recommended herbicide-

Pendimethalin (750 g/ha (PE) +

fb tembotrione 120 g/ha


Pendimethalin (750 g/ha) (PE)

fb imazethapyr 10SL at 75

g/ha at 25 DAS POE


Pendimethalin (750 g/ha

(PE) + fb

tembotrione 120 g/ha

W2- Integrated

weed Mgt.

(herbicide +

mechanical

weeding)

IWM – Atrazine 1.25 kg/ha PE

+ HW at 30 DAS

IWM – Pendimethalin (750

g/ha (PE) fb Hand weeding at

30 DAS

IWM – Atrazine 1.25 kg/ha

PE + HW at 30DAS

W3- One Hand

weeding

One weeding after taking

observation at 60 DAS





38

Udaipur

WP 1.2.2.2.2 Development of sustainable weed management strategies in diversified cropping

systems

(i) Maize - wheat cropping system

Objectives:

To monitor weed dynamics, crop productivity and herbicide residues under long-term tillage and residue management practices

To evaluate the effect on crop productivity and resource-use efficiency

To study C-sequestration, and changes in physico-chemical and biological properties of soil


Treatments Kharif (Maize) Rabi (Wheat) *Summer (Green manuring)

1 CT CT CT

2 CT ZT ZT

3 ZT ZT ZT

4 ZT + R ZT ZT + R

5 ZT + R ZT + R ZT + R

Weed management (Sub-plot)

Maize

1. Atrazine 0.50 kg/ha + tembotrione- 120 g/ha PoE a

Documents

All India Coordinated Research Project on Weed Management ... Document/AICRP-WC...Pyrazosulfuron 25 g/ha rotated with pretilachlor 0.750 kg/ha fb bispyribac-Na 25 g/ha (75% nutrient