Efficacy of novel insecticides and biopesticides against whitefly on okra

Abstract

The experiment was conducted at the farmer’s okra field in Randomized Block Design with 8 treatments replicated thrice. The bio-efficacy of different novel insecticides against white fly revealed that among the treatments, seed treatment of imidacloprid 5 g/kg seed + neem Azal @ 5000 ppm spray + indoxacarb 75 g a.i/ha spray + Bacillus thuringiensis (Biolep) @1 kg/ha spray was significantly most effective treatment and reduced whitefly count by 63.01 - 52.13 and 52.45 - 42.34% at one and seven days after first and second spraying, respectively. However, imidacloprid 5 g/kg seed + neem Azal @ 5000 ppm + indoxacarb 75 g a.i/ha + Bt @ 1 kg/ ha combination was not so much effective treatment after 3rd spray as that was after 1st and 2nd spray of the insecticides and biopesticides.