Bio-efficacy of thiamethoxam in comprison to recommended insecticides against leafhopper and white fly of brinjal (Solanum melongena L.)

Abstract

The bio-efficacy of thiamethoxam (25 9 a.i./ha) was assessed on brinjal, variety “Pusa Kranti” under Delhi conditions in comparison with beta-cyfluthrin (18.75 9 a.i./ha), deltamethrin (20 9 a.i./ha), profenophos (500 9 a.i./ha) and endosulfan (700 9 a.i./ha) against the leafhopper, Amrasca bigutfufa biguttufa (IShida) and white fly, Bemisia tabaci (Gennadius). Thiamethoxam was superior to other treatments against both leaf hopper and white fly. After one day of first spray of thiamethoxam, endosulfan, beta-cyfluthrin, deltamethrin and profenophos, the white fly population reduced by 94.80, 93.74, 88.38, 86.25 and 80.70 per cent, respectively, while leafhopper population was reduced by 94.06, 92.61, 82.50, 82.65 and 77.39 per cent.