Bio-efficacy of newer insecticides against sucking pests of cotton

摘要

Bio-efficacy of imidacloprid 17.8 SL (0.004, 0.006, 0.008 and 0.01%), acetamiprid 20 SP (0.003 and 0.006%) and thiamethoxam 25 WG (0.005 and 0.01%) alongwith recommended insecticides viz., methyl oxydemeton 25 EC (0.02%), dimethoate 30 EC (0.03%) andimidacloprid 70 WS @ 10 g/kg seed was evaluated against early season sucking pests of cotton during kharif season of 2004-2005 at Cotton Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (M. S.) India. The results revealed that imidaclopridseed treatment (10 g/ kg seed), both concentrations of acetamiprid and thiamethoxam were most and equally ' effective against aphid. Imidacloprid, acetamiprid and thiamethoxam at all the concentrations recorded equal efficacy against jassid. Imidacloprid(0.004 to 0.01%) and acetamiprid (0.003 and 0.006%) were most effective against thrips.