Efficacy of insecticides against Bemisia tabaci (Genn.) and Spilosoma obliqua (Wlk.) in black gram

Field experiment were carried out at the Entomology Instructional Farm, JNKVV College of Agriculture, Rewa during kharif 2014–15 in black gram variety T-9 to evaluate the efficacy of flubendiamide 39.35% SC, indoxacarb 15.8% EC, thiamethoxam 25% WG, triazophos 40% EC, monocrotophos 36% SL, thiacloprid 21.7% SC, chlorantraniliprole 18.5% SC and quinalphos 25% EC compared with untreated control. The observations on their efficacy against the Bihar hairy caterpillar Spilosoma obliqua (Walker) and whitefly, Bemisia tabaci (Gennadius) revealed that thiacloprid 21.7% SC was the most effective against whitefly followed by thiamethoxam 25% WG while chlorantraniliprole 18.5% SC was the most effective against Bihar hairy caterpillar followed by flubendiamide 39.35% SC. Flubendiamide 39.35% SC and thiacloprid 21.7% SC were the least effective against whitefly and Bihar hairy caterpillar, respectively.