Field Evaluation of Insecticides Against Fall Army Worm Spodoptera Frugiperda (J E Smith) in Sweet Corn

A field experiment was carried out at the Agricultural College Farm, Naira during rabi, 2019–20 on management of insect pests of sweet corn with special emphasis on fall army worm Spodoptera frugiperda (J E Smith). The results revealed that emamectin benzoate 5SG @0.4 g l^-1 (83.19% reduction in larval incidence) followed by spinosad 45SC @ 0.3 ml l^-1, chlorantraniliprole 0.4G @ 10 kg ha^-1 and chlorantraniliprole 9.3%+ lambda cyhalothrin 4.6% @ 0.5 ml l^-1 were significantly superior (with 80.49, 77.02 and 74.67% reduction in larval incidence, respectively). The treatments with cyantraniliprole 19.8% + thiamethoxam 19.8%FS @ 6 ml kg^-1, lambda cyhalothrin 5EC @ 2ml l^-1 and fipronil 0.3G @ 12 kg ha^-1 were the less effective ones. Emamectin benzoate 5SG gave maximum yield of 39,716 kg ha^-1 with ICB ratio of 1:22.57.