Bioefficacy of Spinetoram 12% SC against Thrips and Boll worm Complex on Cotton

The new insecticides Spinetoram 12% SC along with Profenophos 50% EC, Novaluran 10% EC and control were tested against Thrips(Thrips tabaci) and Bolloworm(Spodoptera) on cotton crop. The maximum reduction in the population of both the pest were recorded in the treatment of Spinetoram 12% SC (42.4%) @56 g a.i/ha and minimum in Novaluran 10% EC @75 ml a.i./ha (24.7). Profenophos 50% EC and Novaluran 10% EC @75 ml a.i./ha, which were on par with each other. In case of square damage, Spinetoram 12% SC @ 56 g a.i./ha was significantly effective with minimum square damage of 14.1% against the check of 26.1%. Maximum square damage 22.00 was found in case of Novaluran 10% EC @75 ml a.i/ha. Regarding boll damage, the same insecticide was found most effective with 7.1% open boll damage against control of 11.15%. Maximum open and green boll damage (15.06 and 22.65%) was recorded from Novaluran 10% EC @ 75 ml a.i./ha. In cases of Spodoptera, Spinetoram 12% SC @ 56 g a.i./ha was found most effective in controlling the larvae population (12.2%). Significantly higher seed cotton yield was obtained from Spinetoram 12% SC@ 56 g a.i/ha with 24.03 qtl/ha as against control 16.79 qtl/ha.