Field Efficacy of Some Insecticides Against Fall Army Worm Spodoptera Frugiperda in Maize

Abstract

A field experiment was conducted during rabi 2018-19 and kharif, 2019 to evaluate efficacy of some newer along with conventional insecticides against fall army worm Spodoptera frugiperda (J E Smith) in maize. The randomized block design (RBD) was followed with ten treatments replicated thrice; the treatments include chlorantraniliprole 18.5%SC, novaluron 5.25%+ indoxacarb 4.5%SC, spinetoram 11.7%SC, lamda cyalothrin 5%EC, thiodicarb 75%WP, profenophos 50%EC, novaluran 5.25% + emamectin benzoate 0.9%SC, emamectin benzoate 5%SG and azadirachtin 1500 ppm. The results revealed that infestation and severity were low with spinetoram 11.7%SC (0.0 and 0.12) followed by chlorantraniliprole 18.5%SC (0.0 and 1.20), respectively, after third insecticidal spray during rabi 2018-19 and the same trend was noticed during kharif, 2019 also. The pooled data on yield revealed that spinetoram gave maximum yield (56.12 q/ ha) followed by chlorantraniliprole (54.16q/ ha). Cost benefit ratio was also maximum with these- 1:3.09 and 1:2.89, respectively.