Vol. 11, Special Issue 5 (2022)

Author(s):
T Jayanth and Ashwani Kumar

Abstract:
The field experiment was conducted to determine Field efficacy of selected insecticides with combination of neem oil against gram pod borer [Helicoverpa armigera (Hubner)], infesting chickpea at Central research farm of Sam Higginbottom University of Agriculture, Technology and Sciences, Naini, Prayagraj, Uttar Pradesh, India during Rabi season of 2021-2022. Efficacy of seven treatments viz., Chlorantraniliprole 18.5% SC, Cypermethrin 4% EC, Profenophos 40% EC + Cypermethrin 4% EC , Chlorantraniliprole 18.5% SC + Neem oil, Profenophos 40% EC, Cypermethrin 35% EC+ Neem oil, Neem oil were evaluated against gram pod borer [Helicoverpa armigera (Hubner)]. Among all the treatments Chlorantraniliprole 18.5% SC was most effective treatment against gram pod borer with lowest mean larval population is 0.81 per treatment followed by Cypermethrin 4% EC (1.02), Profenophos 40% EC+ Cypermethrin 4% EC (1.2), Chlorantraniliprole 18.5% SC + Neem oil (1.25), Profenophos 40% EC (1.28), Cypermethrin 35% EC+ Neem oil (1.51) were next effective treatments. Among all the treatments Neem oil was least effective treatment against gram pod borer with highest mean larval population with 1.66 but comparatively superior over control (3.19) (Water spray) . The highest yield was recorded and when cost benefit ratio worked out, interesting result was achieved, among the treatment studied, i e., Chlorantraniliprole 18.5% SC (19.32 q/ha) with C:B ratio 1:3.42 followed by Cypermethrin 4% EC (18.80 q/ha) with C:B ratio 1:3.34, Profenophos 40%+ Cypermethrin 4% (15.84 q/ha) with C:B ratio 1:2.71, Chlorantraniliprole 18.5% SC + Neem oil (14.35 q/ha) with C:B ratio 1:2.46, Profenophos 40% EC (13.32 q/ha) with C:B ratio 1:2.34, Cypermethrin 35% EC+ Neem oil (12.24 q/ha) with C:B ratio 1:2.04, Neem oil 4ml/lit (10.50 q/ha) with C:B ratio 1:1.87 and control (water spray) (9.56 q/ha) with C:B ratio 1:1.88 respectively.