author(s)
S Sambathkumar

abstract
Cabbage is an important cruciferous vegetable, infested by many insect pests and diamondback moth, Plutella xylostella and leaf webber, Crocidolomia binotalis Zeller are found to be predominant and highly devastating in nature and thereby offer huge economic losses. In viewing the drawbacks of conventional insecticides used to management, in vitro studies were attempted to find out the effect of some newer generation insecticide molecules against these pests. Among insecticides evaluated, Chlorantraniliprole 18.5% SC and Flubendiamide 39.5% SC up on exposure to short period, both larvae of P. xylostella and C. binotalis stopped feeding and found completely controlled. Later, Spinosad 2.5% SC @ 25 g a.i./ha, Emamectin Benzoate 5% SG @ 15 g a.i./ha and Fipronil 5% SC @ 750 g a.i./ha were joined in the lineage through reducing the population of these pests. When compared to DBM larvae, these insecticides brought rapid and complete larval mortality of C. binotalis and this revealed their maximum susceptibility.