Efficacy of insecticides and some bio-rationals against thrips and mites on chilli, (Capsicum annuum L).

Abstract

Study was conducted to determine the bio-efficacy of insecticides and some selected biorationals against chilli thrips (Scirtothrips dorsalis Hood) and chilli mites (Polyphagotarsonemus latus Banks) during summer and Rabi, 2018. Among different insecticides spirotetramat + imidacloprid 240 SC was the effective insecticide against thrips with 90.73% reduction in population followed by fipronil 5 SC (86.22%) and ethion 50 EC (81.60%). Whereas, mites were effectively controlled by spirotetramat + imidacloprid 240 SC (86.80%) followed by spiromesifen 22.9 SC (82.89%) which it was on par. Among biorationals nimbecidine was proved more effective by recording the highest reduction in thrips and mites which was followed by silicon 1000 ppm. The highest incremental cost benefit ratio (1:4.66) was registered in spirotetramat + imidacloprid 240 SC followed by fipronil 5 SC (1:3.30).