Evaluation of different biopesticides against mango leafhoppers

Abstract

Mango leafhoppers are an important insect pest in mango ecosystem. Attempt was made to evaluate different biopesticides against mango leafhoppers. Among eight treatments imposed for the management of mango leafhoppers the treatment with Azadirachtin 5 EC (12.71 leafhopper / inflorescence) recorded significantly lower number of leafhoppers followed by Azadirachtin 1EC (14.41 leafhopper / inflorescence) and Lastraw 30 per cent (15.71 leafhopper / inflorescence). However, the standard check imidacloprid 17.8 SL @ 0.25 ml/lit recorded significantly lower number of leafhoppers (3.93 leafhopper / inflorescence). Highest yield of 65.12 q/ha was recorded in the treatment with Imidacloprid 17.8 SL. The economic analysis of different bio pesticides, imidacloprid gave highest returns with C: B ratio of 1: 3.13. Azadirachtin 5 EC stood second in giving returns with a C: B ratio of 1: 2.38 followed by Azadirachtin 1 EC (1: 2.30).