Guru GyaanAgroStar Agronomy Centre of Excellence
Management of sucking pests in Bt cotton
 Many times, sucking pests are observed alone or more than one at the same time. Under this situation, farmers may find difficulties in the selection of insecticides.  Select the insecticides on basis of occurrence of pest alone or more than one simultaneously on cotton crop.  Install yellow sticky traps for monitoring the pests.  Instead of spraying chemical insecticides directly, spray neem oil @ 50 ml or Lcanicinium lacani or Beauveria bassiana, a fungus base powder @ 40 g per 10 lit of water.  When only jassids is observed, spray acephate 75 SP @ 10 g per 10 lit of water.  When only whitefly is observed, spray bifenthrin 10 EC @ 10 ml or fenpropathrin 30 EC @ 4 ml or pyriproxyfen 10 EC @ 20 ml or traizophos 40 EC @ 20 ml or deltamethrin 1% + traizophos 35% EC @ 10 ml per 10 lit of water.  When only thrips is observed, spray spinatoram 11.7 SC @ 10 ml per 10 lit of water.  When aphid and jassids is observed at the same time, spray methyl-o-demeton 25 EC @ 10 ml per 10 lit of water.  When aphids and white fly ssimultaneously is observed, spray chlorpyriphos 20 EC @ 20 ml per 10 lit of water.  Jassids and thrips observed at the same time, spray lambda cyhelothrin 2.5 EC @ 15 ml or acephate 50% + bifenthrin 10 WG @ 10 ml or cypermethrin 10% + indoxacarb 10 SC @ 10 ml per 10 lit of water.  When whitefly and mites are observed at the same time, spray spiromesifen 22.9 SC 10 ml per 10 lit of water.  If jassids and whitefly observe at the same time, spray indoxacarb 14% + acetamiprid 7.7% SC 10 ml per 10 lit of water.  Aphids, jassids and whitefly (all these three) observed simultaneously, spray acetamiprid 20 SP 10 g or fipronil 4% + acetamiprid 4% SC 10 to 20 ml per 10 lit of water.  When aphid, jassids and thrips are observe at the same time, spray imidacloprid 70 WG 1 g or imidacloprid 30.5 SC 1 ml per 10 lit of water.  When aphids, jassids, whitefly and thrips, these four are observed at the same time, spray buprofezin 25 SC 20 ml or clothianidin 50 WG 1 to 2.5 g or diafenthiuron 50 WP 10 g or dinatofuran 20 SG 3 g or fipronil 5 SC 20 ml or flonicamid 50 WG 3 g or imidacloprid 17.8 SL 4 ml or profenophos 50 EC 10 ml or thiamethoxam 25 WG 4 g or acephate 50% + imidacloprid 1.8 SP 10 g per 10 lit of water.
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