Bio-efficacy of biorational insecticides against major sucking insect-pests of okra (Abelmoschus esculentus L. Moench).

Abstract

The experiment was conducted during March month of the year 2025 at research-cum-Instructional farm of Raj Mohini Devi College Agriculture and Research Station, Ajirma, Ambikapur, District, Surguja (C.G.).The bio-efficacy of birational insecticides against Leafhopper, aphid and whitefly of okra revealed that the six treatments including Azadirachtin (0.03% EC), Pongamia oil (1.0%), Metarhizium anisopliae (5ml/L), Lecanicillium lecanii (5ml/L), Beauveria bassiana (5ml/L) and a chemical standard Imidacloprid 17.8% SL, along with an untreated control, were evaluated results indicated that Imidacloprid showed the highest efficacy against sucking insect-pests. Among the biorational insecticides, Azadirachtin recorded the lowest population of aphid, leafhopper and whitefly as well as highest fruit yield (49.22 q/ha), followed closely by Pongamia oil, with both being statistically at par. Among microbial biopesticides, Lecanicillium lecanii emerged as the most effective in suppressing pest.