Abstract
The study was conducted during kharif 2014 at College of Agriculture, Indore under All India Coordinated Cotton Improvement Project in Randomized Block Design (RBD) with eight treatments and three replications on Bt cotton hybrid NCS 927, sown on 27th July with 0.6x0.6 m spacing. All the recommended agronomical practices were adopted. Treatments were planned for alternate use of two insecticides during six sprays. The spraying was done at 10 days interval with 500 litre water per hectare, using knapsack sprayer fitted with a duromist nozzle. These treatments were prepared as T1- Imidacloprid (70%WG) @ 24.5 gai/ha & Oxydmeton methyl (25%EC) @ 250 gai/ha, T2- Thiaclorprid (21.7%SC) @ 30 gai/ha & Dimethoate (30%EC) @ 250 gai/ha, T3- Imidacloprid (17.8%SL) @ 25 gai/ha & Acephate (75%SP) @ 250 gai/ha, T4- Imidacloprid (30.5%SC) @ 26.25 gai/ha & Thiamethoxam (25%WG) @ 37.5 gai/ha, T5- Spiromesifen (22.9%SC) @ 144 gai/ha & Deltamethrin (2.8%EC) @ 15 gai/ha, T6-Fipronil (5%SC) @ 100 gai/ha & Lambdacyhalothrin (4.9%EC) @ 15 gai/ha, T7- Acetamiprid (20%SP) @ 30 gai/ha & Difenthiuran (50%WP) @ 300 gai/ha and T8- Untreated check. All the treatments Exhibited a significant reduction in jassid population over untreated check. Treatment T6- Fipronil (5%SC) @ 100 gai/ha & Lambdacyhalothrin (4.9%EC) @ 15 gai/ha showed least pest population in each spray and expressed no significant difference with T5- Spiromesifen (22.9%SC) @ 144 gai/ha & Deltamethrin (2.8%EC) @ 15 gai/ha. Similarly the overall jassid population reduction was recorded highest in treatment T6 (80.56%) followed by T5 (74.88%) and other treatments in which T1- Imidacloprid (70%WG) @ 24.5 gai/ha & Oxydmeton methyl (25%EC) @ 250 gai/ha (61.21%) showed least population reduction. Similar trend of efficacy was observed against aphid where treatment T6 showed least pest population in each spray and expressed no significant difference with T5. Again T6 showed highest aphid population reduction (80.56%) and followed with T5 (74.88%).
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Claims 8
Claim · model-written summary
All insecticide treatments significantly reduced jassid populations relative to untreated cotton.
Verbatim
e0“All the treatments Exhibited a significant reduction in jassid population over untreated check.”
t0“Bt Cotton”
Claim · model-written summary
T6 gave the lowest pest population at each spray and did not differ significantly from T5.
Verbatim
e0“Treatment T6- Fipronil (5%SC) @ 100 gai/ha & Lambdacyhalothrin (4.9%EC) @ 15 gai/ha showed least pest population in each spray and expressed no significant difference with T5- Spiromesifen (22.9%SC) @ 144 gai/ha & Deltamethrin (2.8%EC) @ 15 gai/ha.”
t0“Bt Cotton”
Claim · model-written summary
T6 produced the highest overall jassid population reduction, 80.56%.
- Taxon
- Bt Cottont0
- Treatment
- T6e0
- Interactor
- jasside0pest
- Outcome
- jassid population reductione0
- Direction
- higheste0
- Value
- 80.56%e0
Not reportedComparator
Verbatim
e0“overall jassid population reduction was recorded highest in treatment T6 (80.56%)”
t0“Bt Cotton”
Claim · model-written summary
T5 produced 74.88% overall jassid population reduction.
- Taxon
- Bt Cottont0
- Treatment
- T5e0
- Interactor
- jasside1pest
- Outcome
- jassid population reductione1
- Direction
- lowerinferrede0
- Value
- 74.88%e0
Not reportedComparator
Verbatim
e0“followed by T5 (74.88%)”
e1“overall jassid population reduction was recorded highest in treatment T6 (80.56%)”
t0“Bt Cotton”
Claim · model-written summary
T1 produced the least jassid population reduction, 61.21%.
- Taxon
- Bt Cottont0
- Treatment
- T1- Imidacloprid (70%WG) @ 24.5 gai/ha & Oxydmeton methyl (25%EC) @ 250 gai/hae0
- Outcome
- population reductione0
- Direction
- leaste0
- Value
- 61.21%e0
Not reportedComparator
Verbatim
e0“T1- Imidacloprid (70%WG) @ 24.5 gai/ha & Oxydmeton methyl (25%EC) @ 250 gai/ha (61.21%) showed least population reduction.”
t0“Bt Cotton”
Claim · model-written summary
T6 gave the lowest aphid population at each spray, without a significant difference from T5.
Verbatim
e0“against aphid where treatment T6 showed least pest population in each spray and expressed no significant difference with T5.”
t0“Bt Cotton”
Claim · model-written summary
T6 gave the highest aphid population reduction, 80.56%.
- Taxon
- Bt Cottont0
- Treatment
- T6e0
- Interactor
- aphide0pest
- Outcome
- aphid population reductione0
- Direction
- higheste0
- Value
- 80.56%e0
Not reportedComparator
Verbatim
e0“T6 showed highest aphid population reduction (80.56%)”
t0“Bt Cotton”
Claim · model-written summary
T5 gave 74.88% aphid population reduction.
- Taxon
- Bt Cottont0
- Treatment
- T5e0
- Outcome
- aphid population reductione1
- Direction
- lowerinferrede0
- Value
- 74.88%e0
Not reportedComparator
Verbatim
e0“followed with T5 (74.88%)”
e1“T6 showed highest aphid population reduction (80.56%)”
t0“Bt Cotton”
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