Bio-efficacy Evaluation of Chemical Insecticides against Painted Bug, Bagrada hilaris (Burm.) in Mustard

Bio-efficacy studies of insecticides i.e. fipronil 5 SC @ 75 g a.i./ha, spinosad 45 SC @ 75 g a.i./ha, indoxacarb 14.5 SC @ 75 g a.i./ha, imidacloprid 17.8 SL @ 40 g a.i./ha, acetamiprid 20 SP @ 40 g a.i./ha, endosulfan 35 EC @ 350 g a.i./ha, dimethoate 30 EC @ 300 g a.i./ha and oxy-demeton methyl 25 EC @ 250 g a.i./ha against painted bug, Bagrada hilaris (Burm.) in mustard crop during 2006–07 and 2007–08 revealed that all the insecticide treatments were significantly superior over the control in term of higher yield and less infestation of painted bug. However, among the insecticidal treatments, comparative higher painted bug control and yield was obtained by imidacloprid 17.8 SL@ 40g a.i./ha, spinosad 45 SC @ 75 g a.i./ha, indoxacarb 14.5 SC@ 75 g a.i./ha, and acetamiprid 20 SP @ 40 g a.i./ha when compared with other insecticides. Most favourable incremental costbenefit ratio was obtained by the treatments i.e. imidacloprid 17.8 SL@ 40 g a.i./ha (1:32) followed by acetamiprid 20 SP @ 40g a.i./ha (1:28), dimethoate 30 EC @ 300 g a.i./ha (1:27), endosulfan 35EC @ 350 g a.i./ha (1:24), oxy-demeton methyl 25 EC @ 250 g a.i./ha (1:19), indoxacarb 14.5 SC @ 75 g a.i./ha (1:17.0), spinosad 45 SC @ 75 g a.i./ha (1:17) and fipronil 5 SC @ 75 g a.i./ha (1:9).