Bioefficacy of Annona squamosa L. Seed Extracts as Oviposition Deterrents and Adult Emergence Inhibitors Against Callosobruchus maculatus F. (Coleoptera: Bruchidae)

Author: R. Muthu, K. Premalatha, M. Shanthi, J.N. Prithiva and S. Vellaikumar

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Abstract

The pulse beetle, Callosobruchus maculatus being a primary storage pest is of great menace and are being tackled by synthetic insecticides and fumigants that act as effective method of pest control. In contrary, the usage of these insecticides and fumigants brought resistance in insects. Thus to overcome this constrain, an eco-friendly and cost effective method i.e., use of botanicals in managing pulse beetle population was attempted. With a basic understanding on the conventional method of using plant materials as insect repellents, the study was undertaken with the various solvent extracts of seeds of Annona squamosa, to manage population of the storage pest C. maculatus.The results revealed that, the seeds of A. squamosa extracts were found to show oviposition deterrent and reduced adult emergence activity. Methanolic extracts of A. squamosa exhibited higher reduction (90.64%) on fecundity at 20% concentration followed by ethyl acetate extract. The results of efficiency of A. squamosa extracts clearly indicated that botanical extracts showed good control on adult emergence (91.95%) at 20% concentration of A. squamosa seed extract and it protects the green gram seeds from C. maculatus

Keywords

Annona squamosa, seed extract, Callosobruchus maculatus, Green gram

Conclusion

The results of this study showed that Annona squamosa seed extracts, particularly those derived from methanol, exhibit significant potential as an eco-friendly and cost-effective alternative for managing Callosobruchus maculatus, a major storage pest of pulses with strong oviposition deterrence and growth inhibition effects. Ethyl acetate extracts also showed promising results, with notable reductions in both fecundity and adult emergence. The use of A. squamosa seed extracts can thus provide an effective, sustainable solution for controlling C. maculatus populations in stored pulses, helping to reduce the reliance on synthetic insecticides and mitigate the risk of insecticide resistance. The findings support the potential of plant-based pesticides as a viable component of integrated pest management strategies for postharvest pest control, contributing to the preservation of seed quality and reducing storage losses in pulse crops. Further research into optimizing the extraction methods and exploring the broader application of these extracts in different storage conditions could further enhance their practical utility

References

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How to cite this article

R. Muthu, K. Premalatha, M. Shanthi, J.N. Prithiva and S. Vellaikumar (2024). Bioefficacy of Annona squamosa L. Seed Extracts as Oviposition Deterrents and Adult Emergence Inhibitors Against Callosobruchus maculatus F. (Coleoptera: Bruchidae). Biological Forum – An International Journal, 16(11): 138-141