Hypericum hookerianum (Wight and Arn.) as a Potential Bio-Pesticide to Control Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Background and Objective: Cotton is a greatly valued commercial crop which finds heavy losses due to pests. The study aimed to assess the bio-pesticidal activity of Hypericum hookerianum (Wight and Arn.) against important field pest Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Materials and Methods: The present study, the methanol extract of Hypericum hookerianum was tested for their pesticidal activity against the important agricultural field pest, Cotton bollworm, Helicoverpa armigera. The methanolic leaf extract was evaluated at different concentrations against the pest by performing antifeedant(leaf disc choice assay), larvicidal and ovicidal activities. Results: The methanol extract showed a 90.0% feed deterrent activity with 96.43% larvicidal activity and 65.77% larval egg mortality. These findings show that the methanol extract of this plant exhibits great potential as a bio-pesticide against the selected field pest. Conclusion: This present finding gives a secure alternative to the currently used chemical pesticides by contributing to a sustainable farming method.
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Asian Journal of Agricultural Research

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Authors

Mani Mahendrakumar

Alagarmalai Jeyasankar

Kuppusamy Elumalai

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Research Article

***Hypericum hookerianum* **(Wight and Arn.) as a Potential Bio-Pesticide to Control Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)****

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