Evaluation of Biopesticides against Fall Armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in Maize during Rabi

Author: Sahana M., Pramod Katti, A. Prabhuraj, Arunkumar Hosamani and Satyanarayana Rao

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Abstract

With the basic principle of integrated pest management (IPM) and searching for effective and sustainable alternatives for the management of Spodoptera frugiperda in maize different biopesticides were evaluated at Main Agricultural Research Station (MARS), UAS Raichur, Karnataka during Rabi 2019 cropping season. The experiment was laid in a Randomized Complete Block Design (RCBD) with three replications and seven treatments. Biopesticides such as Metarhizium rileyi, Sf NPV and Bacillus thuringiensis var. kurstaki were found to be the best treatments in reducing the larval population and per cent leaf damage compared to untreated control at five and seven days after two sprays. The yield and cost economics also showed that they were economically viable biopesticides.

Keywords

Bacillus, Biopesticides, Metarhizium, Rabi, SfNPV, Spodoptera

Conclusion

The pest S. frugiperda showed to be susceptible to isolates of M. rileyi, SfNPV and B. thuringiensis var. kurstaki indicating potential for biological control within an integrated pest management. These biopesticides were selected to evaluate more efficient biopesticide to control fall armyworm by applying lower doses in the field, helping to overcome the economic limitations and hazardous effects caused by insecticides, and thereby enhancing ecological feasibility.

References

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How to cite this article

Sahana M., Pramod Katti, A. Prabhuraj, Arunkumar Hosamani and Satyanarayana Rao (2023). Evaluation of Biopesticides Against Fall Armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in Maize during Rabi. Biological Forum – An International Journal, 15(1): 163-168.