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Pakistan Journal of Biological Sciences

Year: 2023 | Volume: 26 | Issue: 2 | Page No.: 56-62
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Authors

Dantje Tarore

Dantje Tarore

Jusuf Manueke

Jusuf Manueke

Vivi Bernadet Montong

Mokosuli Yermia Semuel

Mokosuli Yermia Semuel

Keywords

Background and Objective: Rice is one of the most important staple foods in the world, especially on the Asian Continent. Postharvest pests can reduce the quality and quantity of rice by up to 25%. Control using pathogenic microbes is the best choice in controlling postharvest pests in general and Sitophilus oryzae rice powder pests in particular. Research has been carried out to know the effect of dosage concentrations of pathogenic cultures and LC50 values of pathogenic Metarhizium anisopliae cultures on the control of S. oryzae rice powder pest. Materials and Methods: The concentration dose of the pathogenic culture of M. anisopliae acted as a treatment. The test insect population for each treatment was 25 imagos. The study of the effect of dose concentration of M. anisopliae culture on the mortality of S. oryzae imago used analysis of variance. Determination of the effective concentration of LC50 using probit analysis. Results: The higher the concentration of the pathogenic culture of M. anisopliae, the higher the mortality of the adult rice powder pest S. oryzae. The highest mortality of rice powder pest S. oryzae occurred at a dose of 50% concentration of the pathogen M. anisopliae culture, namely 89.33%, followed by a concentration of 40% with a mortality of 72.0%, a concentration of 30% with a mortality of 57.33%, a concentration of 20% with a mortality of 13.33% and the lowest dose concentration of 10% with a mortality of 1.33%. Conclusion: The effective concentration dose (LC50) of the pathogenic culture of M. anisopliae in controlling the rice powder pest S. oryzae was 31.88%.
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Comments

Mayang Sari Reply

The article presents an interesting approach to controlling the Sitophilus oryzae L. pest, which is a major problem in rice storage. The study found that the entomopathogenic fungus Metarhizium anisopliae can be an effective biological control agent against this pest.

Editor

Thank you for your positive feedback on our research article on the control of the Sitophilus oryzae L. pest with the entomopathogenic fungus Metarhizium anisopliae. We are pleased to hear that you found our approach interesting and effective. We hope that this research can contribute to finding more sustainable and environmentally friendly methods for pest control in rice storage.

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