Field Efficacy of Insecticides Against Blue Butterfly Lampides Boeticus (L.) on Yard Long Bean

Field experiment was conducted to evaluate the efficacy of some insecticides against blue butterfly Lampides boeticus (L.), on yard long bean Vigna unguiculata (L.) Walp. (cv. Githika) in the Department of Agricultural Entomology, College of Agriculture (KAU), Vellayani during kharif, 2017. The results showed that chlorantraniliprole 18.5SC @ 30 g a.i.ha^-1 followed by flubendiamide 39.35SC @ 48 g a.i.ha^-1 and thiacloprid 21.7SC @ 120 g a.i.ha^-1 recorded least flower damage when compared to control whereas, indoxacarb 14.5SC @ 75 g a.i.ha^-1 recorded lowest pod infestation which was followed by flubendiamide 39.35SC @ 48 g a.i.ha^-1 and thiacloprid 21.7SC @ 120 g a.i.ha^-1. Thus, foliar application of chlorantraniliprole 18.5SC @ 30 g a.i.ha^-1 was found effective in terms of reduction in flower and pod damage, and increased yield.