author(s)
Nikitha Reddy Gaddam, Vivek Kumar Srivastava, Anoorag R Tayde and Akhilesh Tripathi

abstract
The present investigation was conducted during rabi season of 2019-2020 at SHUATS, Prayagraj in randomized block design on three replications. Eight treatments comprised of botanicals viz. Neem seed kernel extract 5%, Neem leaf extract, Neem oil 10ml/lit and three treatments of Microbials i.e., Beauveria bassiana 3g/lit of water, Bacillus thuringiensis 1g/liter of water and Spinosad 45SC 0.32ml/lit, Indoxacarb 14.5SC 0.35ml/lit and one untreated control was taken. The observations on larval population 3,7 and 14 days at each spraying (1^st and 2^nd) were recorded for computing the percent larval reduction. The data revealed that highest percentage reduction of DBM larvae was observed in Spinosad 45SC (84.97%) followed by Indoxacarb 14.5SC (58.77%) and Bacillus thuringiensis (46.62%). The mean crop yield ranged between 298 q/ha to 228 q/ha in the insecticidal treatments, the highest yield was recorded in Spinosad 45SC (298 q/ha) followed by Indoxacarb 14.5SC (275 q/ha) and Bacillus thuringiensis (268 q/ha). The cost benefit ratio varied from (1:5.97) to (1:5.57) in different treatments, the highest was recorded in Indoxacarb14.5SC (1:5.97) followed by Bacillus thuringiensis (1:5.94) and Spinosad 14.5SC (1:5.86).