Abstract
Field experiments were conducted during rabi/summer season of 2010-11 and 2011-12 to evaluate the efficacyof five newer insecticides (chlorantraniliprole, flubendiamide, spinosad, thiodicarb, novaluron) with twoconventional insecticides (dichlorvos and chlorpyriphos) against tobacco caterpillar, Spodoptera litura in groundnut. The experiments were conducted in a randomized block design with eight treatments and three replications. The results revealed that the maximum percentage of larval reduction and defoliation was in flubendiamide 480SC @ 150 ml/ha followed by chlorantraniliprole 20SC @ 125 ml/ha and novaluron 10EC @ 500 ml/ha. Highest dry pod yield of groundnut was recorded in flubendiamide (2650 and 2100 kg/ha) followed by chlorantraniliprole (2500 and 1983 kg/ha) and novaluron (2267 and 1958 kg/ha) as against 1750 and 1375 kg/ha in untreated control during 2010-11 and 2011-12, respectively. The maximum cost-benefit ratio of 1: 2.5 and 1: 2.13 was obtained with flubendiamide during 2010-11 and 2011-12, respectively.
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