Vol. 11, Special Issue 7 (2022)

Author(s):
Meda Sravani and Ashwani Kumar

Abstract:
The present experiment based on Field efficacy and economics of selected insecticides against pod borer [Helicoverpa armigera (Hubner)] on green gram [Vigna radiata (L.) Wilczek] was undertaken at central research field, Prayagraj, Uttar Pradesh, India during July, 2021 containing seven treatments viz, Flubendiamide 480SC (T1), Indoxacarb 14.5 SC (T2), Emamectin benzoate 5SG (T3), Spinosad 45SC (T4), NSKE 5% (T5), Bacillus thuringiensis 4% WSP (T6), Profenophos 50EC (T7) and untreated Control (T0) in RBD with three replications aiming to evaluate their efficacy of selected insecticides against pod borer, Helicoverpa armigera. Data was taken on green gram pod borer with number of larvae per infested pod and calculated per cent larval reduction. The per cent larval reduction of green gram pod borer Helicoverpa armigera on third, seventh and fourteen days after spraying revealed that the treatments Flubendiamide 480SC (T1), Indoxacarb 14.5 SC (T2), Emamectin benzoate 5SG (T3), Spinosad 45SC (T4), NSKE 5% (T5), Bacillus thuringiensis 4% WSP (T6), Profenophos 50EC (T7) were found superior over all the treatment first and second sprays respectively. Emamectin benzoate 5SG gave maximum per cent larval reduction followed by flubendiamide 480SC. When cost benefit ratio was worked out, interesting result was achieved. Among all the treatments, the best and most economical treatment was Emamectin benzoate 5SG (1:3.64) followed by Flubendiamide 480SC (1:3.55), Indoxacarb 14.5 SC (1:3.18), Spinosad 45SC (1:2.89), Profenophos 50EC (1:2.61), NSKE 5% (1:2.20), Bacillus thuringiensis 4% WSP(1:1.64), as compared to control plot (1:1.45).