Vol. 11, Special Issue 7 (2022)

Author(s):
Jagtap Pandurang Macchindra and Ashwani Kumar

Abstract:
An experiment on chickpea was conducted to determine the “Field efficacy and economics of different chemicals and biopesticides against pod borer, Helicoverpa armigera (Hubner) on chickpea during rabi season” of 2021-22 at the Central Research Field, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj. Efficacy of seven insecticides viz., T₁-Flubendiamide 480SC 0.4 ml/lit of water, T₂-Spinosad 45SC 0.5 ml/lit of water, T₃-Profenofos 50EC 4 ml/lit of water, T₄-Lamda Cyhalothrin 5EC 1 ml/lit of water, T₅-HaNPV 2 ml/lit of water, T₆-NSKE 5% 2ml/lit of water and T₇-Bacillus thuringiensis @ 2 gm/lit of water and treatment of T₈-Untreated control were tested against chickpea pod borer Helicoverpa armigera (Hubner). The different insecticides and biopesticides treatments revealed that the pod damage percentage of pod borer, H. armigera was recorded in synthetic insecticides, T₂-Spinosad 45SC (6.43%) which found most effective followed by T₁-Flubendiamide 480SC (8.11%), T₄-Lamda Cyhalothrin 5EC (9.17%), T₃-Profenofos 50EC (11.00%). The minimum pod damage percentages (6.43%) were observed in T₂-Spinosad 45SC as compared to the T₈-untreated control (20.60%). The yield among the different treatments were significant. All the treatments were superior over control. Highest yield was recorded in the T₂-Spinosad 45SC @20.20 q/ha then followed by T₁-Flubendiamide 480SC @ 18.50 q/ha, T₄-Lambda cyhalothrin 5EC 16.20 q/ha, T₃-Profenophos 50EC 15.10 q/ha, T₅-HaNPV @ 14.69 q/ha, T₇-Bacillus thuringiensis @ 13.50 q/ha, T₈-NSKE 5% @ 12.20 q/ha. The cost benefit ratio was recorded in the T₂-Spinosad 45SC with highest cost benefit ratio of 1:2.70 then followed by T₅-HaNPV with cost benefit ratio of 1:2.60, T₈-NSKE 5% with cost benefit ratio of 1:2.58, T₄-Lambda cyhalothrin 5EC with cost benefit ratio of 1:2.48, T₁-Flubendiamide 480SC with cost benefit ratio of 1:2.47, T₃-Profenophos 50EC with cost benefit ratio of 1:2.00, T₇-Bacillus thuringiensis with cost benefit ratio 1:1.86. The synthetic chemicals shows better results in combating to the pest infestation compare to the botanicals.