Bio-Efficacy of Different Insecticides against Spotted Pod Borer Maruca vitrata (Geyer) Infesting Cowpea

Author: Bhagwan S. Gawade, Makrand S. Karmarkar, Kumud V. Naik, Vinayak N. Jalgaonkar, Bapusaheb D. Shinde, Rajesh S. Mule, Rajedra G. Bhagwat, Udaykumar B. Pethe, Renuka S. Mahajan and Vedantika V. Jadhav

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Abstract

The study was conducted at the Education and Research Farm, Department of Agricultural Botany, College of Agriculture, Dapoli, Dr. Balasaheb Sawant Konakan Krishi Vidyapeeth, Dapoli (MS) India during rabi season of 2022 on the bio-efficacy of different insecticides viz., spinosad 45 per cent SC, emamectin benzoate 5 per cent SG, flubendiamide 480 per cent EC, chlorantraniliprole 18.5 per cent EC, lambda cyhalothrin 5 per cent EC, indoxacarb 14.5 per cent SC, and azadirachtin 1 per cent against spotted pod borer Maruca vitrata (Geyer) infesting cowpea. The overall result revealed that all the insecticidal treatments were significantly superior over untreated control in minimizing the larval population of M. vitrata infesting cowpea. Among the treatments, spinosad 45 EC @ 0.003 per cent was found more effective in reducing the pod damage (2.89%) and followed by indoxacarb 14.5 SC @ 0.014 per cent (3.96%). The next best treatments were emamectin benzoate 5 SG @ 0.002 per cent (4.76%), lambda cyhalothrin 5 EC @ 0.003 per cent (5.85%), chlorantraniliprole 18.5 EC @ 0.001 per cent (7.56%), flubendiamide 480 EC @ 0.002 per cent (7.90%) and azadirachtin 0.003 per cent (9.86%). The highest pod damage (16.99%) was recorded in the untreated control. The highest cowpea green pod yield (14.22q ha-1) was achieved by spinosad 45 EC @ 0.003 per cent followed by indoxacarb 14.5 SC @ 0.014 per cent which recorded (13.70 q ha-1), emamectin benzoate 5 SG @ 0.002 per cent(13.25 q ha-1), lambda cyhalothrin 5 EC @ 0.003 per cent (12.36 q ha-1), Chlorantraniliprole 18.5 EC @ 0.001 per cent(11.17 q ha-1), Flubendiamide 480 EC @ 0.002 per cent (10.90 q ha-1) and azadirachtin 1 @ 0.003 per cent (10.12 q ha-1). Among all the treatments untreated control recorded lowest yield (9.14 q ha-1).

Keywords

Pod damage, cowpea, yield, insecticides, spotted pod borer, M. vitrata

Conclusion

The study underscores the successful management of the cowpea spotted pod borer through a structured spray schedule. Despite its status as a significant pest for cowpea crops, the research reveals that the application of spinosad 45 EC at 0.003%, indoxacarb 14.5 SC at 0.014%, and emamectin benzoate 5 SG at 0.002% proved highly effective in protecting pods. The results suggest that incorporating these insecticides into the recommended spray routine can contribute to the efficient control of the cowpea spotted pod borer.

References

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How to cite this article

Bhagwan S. Gawade, Makrand S. Karmarkar, Kumud V. Naik, Vinayak N. Jalgaonkar, Bapusaheb D. Shinde, Rajesh S. Mule, Rajedra G. Bhagwat, Udaykumar B. Pethe, Renuka S. Mahajan and Vedantika V. Jadhav (2024). Bio-Efficacy of Different Insecticides Against Spotted Pod Borer Maruca vitrata (Geyer) Infesting Cowpea. Biological Forum – An International Journal, 16(1): 44-46.