Efficacy of different insecticides against major sucking insect-pests infesting Bt cotton

Abstract

A field experiment was conducted during kharif, 2023-2024 to evaluate the bio-efficacy of major sucking insect-pests infesting Bt cotton at regional research station, Anand agricultural university, Anand, Gujarat. Among evaluated different insecticides dinotefuran 20% SG, clothianidin 50% WDG and tolfenpyrad 15% EC were most effective in reducing leafhopper and aphid population while, acetamiprid 20% SP, spiromesifen 240 SC and afidopyropen 50 gL-1 DC were most effective for whiteflies, whereas clothianidin 50% WDG, fipronil 5% SC and tolfenpyrad 15% EC significantly reduced thrips population. The highest cotton yield was recorded from the treatment dinotefuran followed by clothianidin and tolfenpyrad. Looking to the ICBR dinotefuran provided the highest return (1:11.34), followed by acetamiprid (1:10.29) and acephate (1:8.23).