Bio-efficacy of different biopesticides against hopper, Amritodus atkinsoni Lethierry infesting mango

Abstract

In order to evaluate the bio-efficacy of various biopesticides against hopper, Amritodus atkinsoni infesting mango, a field experiment was conducted at Anand Agricultural University, Anand during 2018. Among the eight biopesticides evaluated, neem seed kernel extract (NSKE) 5 per cent was found the most effective followed by Lecanicillium lecanii 1.15% WP, neem oil 1 per cent and neem leaf extract (NLE) 10 per cent in reducing the incidence of A. atkinsoni. Maximum (118.77 q/ha) mango fruit yield was recorded from the trees treated with NSKE which was at par with L. lecanii 1.15% WP, neem oil 1 per cent and neem leaf extract (NLE) 10 per cent with yield of 116.27, 110.79 and 108.03 q/ha, respectively. The highest (1:13.16) return was obtained with the treatment of NSKE followed by L. lecanii 1.15% WP (1:12.56), neem oil (1:11.23) and NLE (1:10.56).