1Faculty, Agriculture Department, Davao Del Sur State College (DSSC)
2LBb Project Staff, DSSC
Email: juanagudera@gmail.com
Background: Beauveria bassiana is a well-known entomopathogenic fungus that plays an important role in the biological control of many insect pests. As a microbial insecticide, it offers an environmentally safer alternative to chemical pesticides and helps minimize the accumulation of harmful residues in agricultural crops. Although this fungus is commonly produced using solid culture media, many farmers prefer liquid formulations because they are more convenient for field application.
Objective: To address this objective, the research was conducted at Davao del Sur State College between January 2021 and May 2023 to examine the growth performance of B. bassiana grown in coco-water as a liquid medium under varying pasteurization periods. The study further evaluated whether liquidized B. bassiana (LBb) could effectively control the larvae of the rice white stem borer (Scirpophaga innotata Walker).
Results: The findings showed that coco-water pasteurized for three to four hours created suitable conditions for the growth of B. bassiana within five days after inoculation. In contrast, no fungal growth was observed in unpasteurized coco-water. Full colonization of the medium was recorded in bottles pasteurized for three to four hours, while slower growth occurred in media pasteurized for shorter periods and in Potato Dextrose Agar. Furthermore, rice plants treated with LBb at rates of 100, 150, or 200 ml per liter of water applied weekly, biweekly, or monthly produced effects comparable to those obtained using granular insecticide applied monthly.
Conclusion: These findings indicate that liquid formulations of B. bassiana using coco-water may provide a practical and environmentally friendly alternative for managing rice white stem borer infestation.
Keywords: Liquid Beauveria bassiana (LBb), coco water, pasteurization, white stem borer larvae, dosage, frequency.
How to cite this article: Agudera JP Jr, Banse NME, Innovating Liquid Beauveria Bassiana (Lbb) and Testing Against Rice White Stem Borer (Scirpophaga Innotata Walker) Larvae. Int J Drug Deliv Technol. 2026;16(12s): 616-622. DOI: 10.25258/ijddt.16.12s.73
Source of support: Nil.
Conflict of interest: None