Efficacy and Economics of Selected Chemicals and Bio-pesticides against Mustard Aphid [Lipaphis erysimi (Kaltenbach)] in Prayagraj, U.P., India
Bhaskar Shastri *
Department of Entomology, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Naini, Prayagraj 211007, Uttar Pradesh, India.
Ashwani Kumar
Department of Entomology, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Naini, Prayagraj 211007, Uttar Pradesh, India.
*Author to whom correspondence should be addressed.
Abstract
The study was carried out at central research farm in rabi season at Sam Higginbottom University of Agriculture Technology and Sciences. The efficacy of treatments was measured in terms of the reduction in aphid population. Imidacloprid 17.8 SL exhibited the highest population reduction (95.210), followed by Dimethoate 30 EC (82.887), Acetamiprid 20 SP (69.350), Neem oil 5% (48.767), N.S.K.E. (42.040), Verticillium lecanii 1.15 WP (39.95), Beauveria bassiana 1.15 WP (30.707), with the untreated plot showing the minimum reduction. The cost-benefit analysis of treatments revealed that. Imidacloprid 17.8 SL demonstrated the highest return (1:5.23), followed by Dimethoate 30 EC (1:4.26), Acetamiprid 20 SP (1:4.16), Neem oil 5% (1:3.67), N.S.K.E (1:3.45), Verticillium lecanii (1:2.77), and Beauveria bassiana (1:2.61). The control plot yielded the lowest return (1:1.56).
Keywords: Bio-pesticides, chemicals, cost benefit ratio, economics, efficacy, mustard aphid, Lipaphis erysimi, population reduction, Rabi season, treatments