Studies on efficacy of biorational insecticides against major sucking pests, Amrasca biguttula biguttula (Ishida), Bemisia tabaci (Gennadius) and Aphis gossypii (Glover) on brinjal

Field experiments were carried out for assessing the efficacy of some biorational insecticides against sucking pests of brinjal during 2015-16 at the Indian Institute of Horticultural Research, Bengaluru. The major sucking insects included leafhopper, Amrasca biguttula biguttula Ishida, whitefly, Bemisia tabaci Gennadius, and aphid Aphis gossypii Glover. All the tested biorationals reduced the sucking pest population significantly over control. Two sprays of spinosad 45 SC @ 0.2 ml/l recorded less population of all the three insects followed by dimethoate 30 EC @ 1.6 ml/l.