Comparative efficacy of green labeled insecticides against Spodoptera litura on bidi tobacco at scarce rainfall zone of A.P

Abstract

An experiment was conducted for three seasons at Regional Agricultural Research Station. Nandyal. Comparative efficacy of insecticides, viz Rynaxpyr 0.3ml/l, Spinosad 0.25ml/l, Novaluron 1ml/l, Emamectin benzoate 0.4gm/l and Chlorpyriphos 2.5ml of water against Spodoptera litura was carried out. All three insecticides Rynaxpyr 0.3ml/l, Spinosad 0.25ml/l, Novaluron 1ml/l, Emamectin benzoate 0.4gm/l and Chlorpyriphos 2.5ml, had non-significant difference among themselves in reducing the larval population of Spodoptera litura. at 3, 5 and 7 following the application of the insecticides. Rynaxpyr 0.3ml/l, Emamectin benzoate 0.4gm/l in reducing number of larvae on the basis of pre-spray data. Toxicity of Rynaxpyr 0.3ml/l, Emamectin benzoate 0.4gm/l and Spinosad 0.25ml/l was discussed.