Effect of Pyriproxifen 10% EW against sucking insect pest population in cotton

Abstract

An investigation was carried out at AICRP on cotton scheme, Chamarajanagar, Karnataka during kharif season of 2016-17 and 2017-18 to evaluate the bio-efficacy of pyriproxifen 10% EW against sucking insect pests of cotton viz., whitefly (Bemisia tabaci Genn.), aphids (Aphis gossypii Glover), thrips (Thrips tabaci Lind), and leafhopper (Amrasca bigutulla bigutulla Ishida). The study indicated that spraying of pyriproxifen 10% EW @ 200 g.a.i/ha has recorded significantly higher seed cotton yield (19.43 q/ha) with maximum per cent reduction in whiteflies (95.28%), aphids (90.04%), thrips (98.78%) and leafhoppers (94.40%), respectively. Followed by spraying pyriproxifen 10% EW at 125 g.a.i/ha. However, all the insecticide treated plots were superior in reducing the pest load as compared to un treated control.