Efficacy of new molecules of insecticides against girdle beetle, Obereopsis brevis Swed. and white fly, Bemisia tabaci Genn. and their analysis of economics

Abstract

A Field experiments were conducted during Kharif season of 2017-2018 to evaluate the efficacy of new molecule of insecticides i.e. Triazophos 40% EC, Indoxacarb 15.8% EC, Thiacloprid 21.7% SC, Profenophos 50% EC, Flubendiamide 39.35% SC, Chlorantraniliprole 18.5% SC, Betacyfluthrin 8.49%+ Imidacloprid 19.81% 300 OD, Thiamethoxam 12.6%+ Lambdacyhalothrin 9.5% ZC, will be compared with untreated control plot against the Girdle Beetle, Obereopsis brevis Swed. and White fly, Bemisia tabaci Genn. Among them, Triazophos @ 320 g a.i./ha were found as the best treatment against Girdle beetle followed by Chlorantraniliprole @ 30 g a.i./ha. The efficacy of insecticide against White fly had also shown the Thiacloprid @ 60 g a.i./ha as the best tested insecticides besides being safer to environment and Triazophos @ 320 g a.i./ha was found second best treatment. The highest yield of 13.13 q/ha, was recorded in the plot treated with Triazophos @ 320 g a.i. /ha. The lowest yield of 8.13 q/ha was recorded in untreated control. The C: B ratio of various insecticide treatments was calculated and the maximum C:B ratio (1:10.7) was recorded from Triazophos treatment followed by Thiamethoxam + Lambdacyhalothrin (1:10).