Efficacy of different insecticides against cotton leafhoppers (Amrasca Biguttula Biguttula (Ishida)) In RCH-2 BG-II.

Abstract

Among the sucking pests attacking cotton, leafhoppers (Amrasca biguttula biguttula (Ishida)) are very important. Seven different insecticides viz., imidacloprid 70% WG, fipronil 80% WG, diafenthiuron 50% WP, buprofezin 25% SC, acephate 75% SP,acetamiprid 20% SP, imidacloprid 17.8% SL were evaluated against leafhoppers in RCH-2 BG-II cotton hybrid during kharif 2011- 12 and 2012-13. Diafenthiuron was the most effective insecticide with 77.84 per cent reduction of leafhoppers population with highest yield(2227 kg ha-1) followed by imidacloprid 70% WG, fipronil , buprofezin and acephate .