Comparative Toxicity of IGRs and New Chemistry Insecticides against Cabbage Butterfly (Pieris Brassicae Nepalensis)

An experiment was conducted to study the toxicity of IGRs lufenuron (Match 5% EC), emamectin benzoate (Proclaim 1.9 EC) and new chemistry insecticides namely, chlorantraniliprole (Coragen 20% SC) and chlorantraniliprole + thiamethoxam (Voliam Flexi 300 SC) against different larval instars of P. brassicae nepalensis during 2020-21.The field population collected from Faisalabad was tested using leaf dip bioassay method under laboratory conditions.Overall results showed that a new chemistry insecticide chlorantraniliprole + thiamethoxam (Voliam Flexi 300 SC) was most toxic insecticide against all larval instars of P. brassicae nepalensis followed by chlorantraniliprole (Coragen 20% SC).IGRs (Lufenuron and emamectin benzoate) have been found least effective insecticides.Lufenuron (Match 5% EC) was found most less toxic insecticide.