In the present study, effect of some reduced risk insecticides were evaluated against sucking insect complex on okra. The selected reduced risk insecticides were Biotrin 0.5% (Matrine 0.5%), Capture 75 WDG (Imidacloprid + Emamectin Benzoate), Kotan 50 WG (Pymetrozine), Ravjum 14.5 SC (Indoxacarb) and Sniper 10 SC (Fenopropathrin + Fenvalerate). A total of four sprays were given at 10 days interval. Data were collected on number of insects/leaf, number of curled leaf per plant and marketable yield of okra (t/ha). Considering the reduction of jassid populations, the best result was found in case of Kotan 50 WG (0.51 jassid/leaf after given 4th spray) and Sniper 10 SC (0.67 jassid/leaf after given 4th spray) treated plots while the next best treatments were Capture 75 WDG (1.0 jassid/leaf) and Ravjum 14.5 SC (1.56 jassid/leaf) respectively. But Biotrin 0.5% was found ineffective or less effective against sucker complex of okra (8.0 jassid/leaf) and this result was comparable with untreated control (10.25 jassid/leaf). Similar trend was found in case of whitefly and aphid populations following given treatments. Numbers of curled leaves were significantly reduced in insecticides treated plots except Biotrin 0.5%. The highest marketable fruit yield (10.56t/ha) was found from Kotan 50 WG treated plots @ 1.0 g/L that was insignificantly followed by Sniper 10 SC @ 1.5 ml/L (10.44 t/ha). The lowest yield was recorded from control plots (6.12 t/ha) and the plots treated with Biotrin 0.5% (6.50 t/ha).
Key words: Reduced risk insecticide, infestation, sucking insects, marketable yield, okra
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