author(s)
Roop Singh Meena, Keshav Mehra and Vikram

abstract
An experiment was conducted at Agricultural Research Station, Sriganganagar, (SKRAU, Bikaner) to evaluate the bio-efficacy of imidacloprid 17.1 SL against important sucking pests of cotton viz., jassid, whitefly and thrips during the Kharif, 2016. The insecticides viz., imidacloprid 17.1% SL @ 150, 200 & 250 ml ha^-1, imidacloprid 17.8% SL @ 125 ml ha^-1, acetamiprid 20% SP @ 100 g ha^-1 and thiamethoxam 25% WG @ 200 g ha^-1 were applied two times at ETL. Among the treatments, imidacloprid 17.1% SL @ 250 ml ha^-1 was found most effective against jassid, whitefly and thrips in cotton crop which was at par with imidacloprid 17.1% SL @ 200 ml ha^-1 and thiamethoxam 25% WG @ 200 g ha^-1. Highest seed cotton yield (16.17 q ha^-1) was recorded in the plots treated with imidacloprid 17.1% SL @ 250 ml ha^-1.