Bioassay Studies for Testing Toxicity of Novel Insecticides against Spodoptera litura (Fabricius.)

Bioassay studies were conducted in the Department of Entomology, College of Agriculture, Rajendranagar, Hyderabad to determine the relative toxicity of selected novel insecticides viz., chlorfluazuron, chlorantraniliprole, spinetoram, indoxacarb, emamectin benzoate and spinosad against second instar larvae ofS. Litura by topical application, residue method and surface diet method. The data on the toxicity of insecticides to S. litura, clearly indicated that among the six insecticides tested against the second instar, emamectin benzoate, spinetoram, indoxacarb, chlorfluazuron, chlorantraniliprole showed greater toxicity against S. litura compared to spinosad in all the three methods of application.