Bio efficacy of different pesticides against whitefly (Bemisia tabaci Gennadius) in tomato

Abstract

Whitefly, Bemisia tabaci is one of the major injurious sucking pests in Gujarat as well as in India. The field experiment based on bio-efficacy of different pesticides against whitefly, Bemisia tabaci in tomato cv. GT. 2 was conducted under field condition at Navsari Agricultural University, Navsari, Gujarat during Rabi 2014-15. Eight treatments including untreated control were imposed in Randomized Block Design with four replications. Lowest whitefly population (2.18 adults/leaf) was recorded in imidacloprid 17.8 SC @ 0.005% (2.8 ml/10 L of water) followed by 2.22 adults/leaf in dimethoate 30 EC @ 0.03% (10 ml/10 L of water) which were significantly at par with each other. Next in the order of effectiveness was azadirachtin 3000 ppm at 3 ml/litre of water (5.69 adult/leaf).