Efficacy of different biopesticides against sucking pests infesting okra, Abelmoschus esculentus L. (Moench)

Abstract

In order to examine the efficacy of different biopesticides against sucking pests of okra viz., leaf hopper, aphid and whitefly, a field study was taken at Central Experimental Station Wakawali, Maharashtra, India during kharif 2019-2020. The results revealed that azadirachtin 1% EC @ 0.003 per cent was the best treatment, recorded with minimum (3.07) mean leaf hopper population per three leaves and was followed by the treatment Lecanicillium lecanii @ 5gm/l (3.48 leaf hoppers/three leaves). For aphid Lecanicillium lecanii @ 5gm/l was the best treatment which was recorded minimum (6.28) mean aphid population per three leaves and was followed by treatment Azadirachtin 1% EC @ 0.003 per cent (6.65 aphids/three leaves). Lecanicillium lecanii @ 5gm/lit was the best treatment against whitefly as it was recorded with minimum (2.58) mean whitefly population per three leaves and was followed by azadirachtin 1% EC @ 0.003 per cent (2.72 whiteflies) and Beauveria bassiana @ 5g/l (3.17 whiteflies).