Bio-efficacy of new molecules and bio-rationals in the management of defoliator pests of sunflower

Abstract

Studies on the field efficacy of new molecules and biorationals against on sunflower defoliator pests. Two need based foliar applications at 45 and 65 DAS were given. All the treatments rendered significant suppression of defoliators pests and percent foliage damage compared to untreated control. Among the chemical treatments minimum population and percent foliage damage recorded in chlorantraniliprole which was significantly superior in recording the lowest population and percent foliage damageand were found significantly superior over profenophos 50 EC treated plot. While in biorationals GCK extract (2%) which was significantly superior in recording the lowest population and percent foliage damage which was on par with NSKE (5%).Among chemical treatments highestnet profit was recorded in chlorantraniliprole (rynaxypyr 18.5 SC) and emamectin benzoate 5 SG. The results clearly indicated the superiority of newer insecticides and biorationals in controlling Spilarctia obliqua and Thysanoplusia. orichalcea of sunflower.