Efficacy of Some Important Insecticides in the Control of Bemisia Tabaci (Genn.), A Vector of the Yellow Mosaic Disease on Momoean

Field experiments were conducted to assess the comparative efficacy of eleven insecticides in controlling the whitefly, Bemisia tabaci Genn. and checking the incidence cf the yellow mosaic disease on mothbean [Vigna aconitijolia (Jacq.) Marechalj. Monocrotophos, fenitrothion, methyl-demeton; dimethoate, permethrin. disulfoton, phorate and carbofuran significantly reduced the whitefly population and were also found effective in reducing the incidence of yellow mosaic disease. Whereas, monocrotophos, fenitrothion and dimethoate only were found effective in increasing the grain yield of the plant. Monocrotophos at 0.25 kg a.i./ha applied 3 times at 15 days interval starting from 15th day of sowing was more effective than other chemicals and has been recommended for use in the control of whitefly and yellow mosaic disease on mothbean.