Bio-Efficacy of Insecticides Against Plutella Xylostella (L.) in Cabbage (Brassica Oleracea Var.Capitata)

Abstract

Efficacy of seven insecticides viz., emamectin benzoate 5 SG at 11 g a.i.ha^-1, emamectin benzoate 5 SG at 22 g a.i.ha^-1, profenophos 50 EC at 500 g a.i.ha^-1, profenophos 50 EC at 1000 g a.i.ha^-1, spinosad 45 SC at 100 g a.i.ha^-1, bifenthrin 10 EC at 100 g a.i.ha^-1 and Bacillus thuringiensis at 5 WP at 25 g a.i.ha^-1 was evaluated during Kharif,2012 against Plutella xylostella on cabbage. Among all the insecticides, profenophos (1000 g a.i.ha^-1) was found to be the most effective one with a maximum reduction in Plutella xylostella population (70.20%), followed by bifenthrin 10 EC at 100 g a.i.ha^-1 (68.18%).