Efficacy of selected insecticides and botanicals against shoot and fruit borer, Earias vittella (Fabricius) on okra

Abstract

A field experiment was conducted during the kharif season of 2024 at Central Research Field, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India to evaluate the efficacy of eight treatments against Earias vittella on okra. The results revealed that all the treatments significantly reduced pest incidence compared to the control. Chlorantraniliprole 18.5% SC was most effective, which recording minimum shoot (10.21%) and fruit (9.98%) infestation, followed by emamectin benzoate 5% SG (11.45% and 12.29%) and spinosad 45% SC (13.86% and 14.11%). Moderate efficacy was observed with Neem oil 5%, Karanj oil 5%, B. bassiana 5% WP, and B. thuringiensis 5% WP. The untreated control showed the highest infestation (24.84% and 25.98%). Maximum yield was
obtained with Chlorantraniliprole 18.5% SC (153 q/ha), followed by spinosad 45% SC (150 q/ha). Economic analysis revealed the highest cost-benefit ratio for chlorantraniliprole 18.5% SC (1:6.54), followed by emamectin benzoate 5% SG (1:6.01) and spinosad 45% SC (1:5.54).