Relative toxicity of different insecticides against Spodoptera litura

Abstract

The present investigation entitled “Relative toxicity of different insecticides against Spodoptera litura” was conducted, in order to study the life stages of Spodoptera litura on different hosts. The experiment was conducted during year 2013- 2014 in the Laboratory of Toxicology, Department of Entomology, Dr. PDKV, and Akola. The Spodoptera litura reared on three host plants viz., Castor, Soybean, Sunflower. These host plant Influenced on the toxicity of different insecticides to Spodoptera litura, showed that the indoxacarb and Spinosad was most effective against Spodoptera litura fed on castor and Soybean host followed by emamectin benzoate and for Sunflower host spinosad was most effective insecticide followed by indoxacarb and emamectin benzoate. The relative toxicity of four different insecticides in third instar larvae of Spodoptera litura, reared on three host plants viz. Castor, Soybean and Sunflower, The order relative toxicity for Castor and Soybean host was Indoxacarb > Spinosad > Emamectin Benzoate >Rynaxypyr. And for Sunflower host the order relative toxicity was Spinosad > Indoxacarb > Emamectin benzoate >Rynaxypyr.