Evaluation of Some Biopesticides against Pod Borer in Garden Pea (Pisum sativum L.) under Natural Conditions of Prayagraj (U.P.)

Abstract

The experiment was conducted at the research plot of the Department of Agricultural Entomology at the Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj during the Rabi season of 2021-22. The treatments Selected for this experiment were evaluated against Pod borer, Helicoverpa armigera i.e., Neem oil 2% @ 2ml/lit, Spinosad 45% SC @ 0.2ml/lit, NSKE 5% @ 5ml/lit, Bacillus thuringiensis 4% WSP @ ml/lit, NSKE+HaNPV+Bt @ 1ml/lit, Emamectin Benzoate 5% SG @ 2ml/lit, Beauveria bassiana @ 2ml/lit and Untreated control in RBD with three replications. Results revealed that among the different treatments Emamectin benzoate 5% SG (10.57%) was found to be the most effective treatment in the reduction of H. armigera followed by Spinosad 45% SC (15.21%), NSKE+HaNPV+Bt (9.03%), Beauveria bassiana 1.5% SG (13.98%), NSKE 5% (16.41%), Bacillus thuringiensis 4% WSP (12.00%) and Neem oil 2% (17.32%) was found to be least effective against this pest. Among all the treatments, the cost-benefit ratio has been analyzed, in which the highest was Emamectin benzoate 5% SG (1:4.25) and marketable yield (19.20 q/ha) followed by Spinosad 45% SC (1:3.43 and 16.40 q/ha), and NSKE+HaNPV+Bt (1:3.00 and 14. 60 q/ha), Beauveria bassiana 1. 5 % SG (1:2.80 and 13.25 q/ha), NSKE 5%(1:2.69 and 12.45 q/ha), Bacillus thuringiensis 4% WSP (1:2.55 and 11.80 q/ha) and the lowest was Neem oil 2% (1:2.48 and 11.20 q/ha) have been recorded.