Efficacy of new insecticides for the management of cowpea pod borer (Maruca vitrata fab.)

Field experiments were conducted at Regional Research Station, Karnal (Haryana) on cowpea during Kharif, 2011 and 2012. In pooled result flubendiamide @ 1.0 gm/lit was found significantly better to reduce the cowpea pod borer damage on number basis (19.61%) followed by indoxacarb 14.5 SC @ 0.5ml/lit (24.13%). Similarly highest marketable yield (96.12q/ha) was recorded in flubendiamide @ 1.0 gm/lit and found to be at par with indoxacarb 14.5SC @ 0.5ml/lit (90.36). However, maximum cost benefit ratio (1: 14.5) was recorded in endosulfan 35 EC @ 2ml/lit followed by indoxacarb 14.5SC @ 0.5ml/lt. (1: 5.0) and thiodicarb 40 WP @ 1.0 gm/lit (1: 3.7). So based on the efficacy, flubendiamide @ 1.0 gm/lit followed by indoxacarb 14.5SC @ 0.5ml/lit was found to be very effective against Maruca vitrata in cowpea.