Comparative Efficacy of Newer Insecticides against Plutella xylostella and Spodoptera litura on Cauliflower under Laboratory Conditions

Abstract

Cabbages and cauliflowers are the most important winter vegetables cultivated mainly in tropical and temperate areas of the globe. Armyworm, Spodoptera litura and Diamondback moth (DBM), Plutella xylostella are the most economic and destructive insect pest for cabbage and cauliflower. The current study was conducted to investigate three new insecticides such as emamectin benzoate, lufenuron and profenofos against two lepidopteran insect pests; Spodoptera litura and Plutella xylostella at different larval instars during 2018 under laboratory conditions. For this purpose, randomized complete design and leaf dip method was used. The current study was resulted that Emamectin benzoate proved to be effective one with significantly higher level of morality followed by profenofos and lufenuron after 48 and 72 hours respectively. Emamectin benzoate can be recommended as the most toxic insecticides against both Spodoptera litura and Plutella xylostella populations along with profenofos.