Efficacy of insecticides against white grub, Holotrichia consanguinea infesting groundnut

Abstract

A field experiment comprised of eight insecticides tested against white grub on groundnut was conducted in endemic area of Junagadh District at Oil Seed Research Station, Manavadar. The soil drenching of Imidacloprid 40% + Fipronil 40% - 80% WG @ 250 g per ha and Clothianidin 50% WDG @ 250 gm per ha was the safe and most effective treatments against white grub in groundnut followed by Chlorpyriphos 20% EC @ 4000 ml per ha. Although, soil drenching of Imidacloprid 40% + Fipronil 40% - 80 WG @ 250 g per ha was the most profitable treatment (NICBR = 1:2.38), however, Imidacloprid 40% + Fipronil 40% - 80 WG @ 250 g per ha proved as the best treatment against white grub in groundnut crop.