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Research Article Open access CC BY 4.0

Efficacy of Various Insecticides against Gram Pod Borer (Helicoverpa armigera) Hubner in Chickpea

Vaishnavi Mishra, Saroj Chauhan, Ritesh Kumar, Pradumn Kumar Mourya

Journal of Advances in Biology & Biotechnology · pp. 71–80 · Published 19 Aug 2024

10.9734/jabb/2024/v27i91275

Abstract

The investigation sought to examine the efficacy of several pesticides on the larval population of the gram pod borer (Helicoverpa armigera) in chickpea  plants,  as  well  as  the  corresponding cost-benefit ratio. The experiment was carried out in the Entomology Research Field, Institute of Agriculture and Natural Sciences, Deeksha Bhawan, DDU Gorakhpur University, Gorakhpur in a Randomized Block Design (RBD) with seven treatments replicated three times using Pusa 362 variety in a plot size of (3 m×2 m) at a spacing of (20×10 cm). The treatments used during the observation were T1 Spinosad, T2 NSKE, T3 Bt, T4 Beauveria bassiana, T5 Neem oil, T6 Emamectin benzoate and T7 control plot (without any treatment). From the study it was noted that the highest reduction was reported in plots treated with Spinosad 0.20ml/l which proved to be superior among the rest of the treatments and the next effective treatment is Emamectin benzoate 0.4 g/l, followed by Beauveria bassiana 2x 10 CFU@ 5ml/l, Bacillus thuringiensis 1.5g/l and maximum population of pod borer was observed in untreated control plot. The data on the yield of chickpea revealed that the highest yield recorded in the treatment Spinosad (0.20ml/l) and it was superior over all the other treatment followed by Emamectin benzoate 0.4g/l with the yield was obtained in the control. The data on the increase in yield over control of chickpea revealed that the highest increase in yield over control was recorded in the treatment Spinosad (0.20ml/l) and it was superior over all the other treatments and followed by Emamectin benzoate 0.4g/l with the lowest increase in yield over control was reported in plot treated with NSKE 5% with, respectively. The maximum cost-benefit ratio was obtained in the plot treated with 0.20ml/l spinosad 45 SC next effective treatment in terms of cost-benefit ratio was Emamectin benzoate 0.4g/l and the lowest cost-benefit ratio was found in Neem oil 3%treated plot.

Bio efficacy gram pod borer Helicovera armigera spinosad cost-benefit ratio Eastern Uttar Pradesh

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