Population dynamics of sucking insect pests of okra

Abstract

The population of sucking insect pest aphids, leafhoppers and thrips ranged between 4.0-34.7, 5-33.1, 3.3-28.6 pests/ 3 leaves respectively. The attack of pests commenced from 29th SMW in second fortnight of July. The peak level of sucking pests viz, aphids, leafhoppers and thrips recorded 34.7, 33.1 and 28.6 pests/ 3 leaves, respectively and peak level reached on 37 SMW, 33.7 SMW and 36 SMW, respectively. During entire study period, maximum temperature showed non-significant negative correlation with sucking pest, minimum temperature exhibited negative correlation with aphid & leafhoppers and positive with thrips, morning humidity and minimum humidity showed positive correlation with sucking pests, rainfall showed negative correlation with aphids & leafhoppers and positive with thrips.