# Carrier Formulations to Enhance Conidial Viability and Pathogenicity of Beauveria bassiana against Spodoptera frugiperda Larvae
> Azurah N.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_105046017177
Jurnal / Konferensi: Annals of Tropical Research
Tahun terbit: 2026
DOI: https://doi.org/10.32945/atr48113.2026
ISSN: 01160710
Kuartil SJR: Q4
Citations: 0

## Authors
- Azurah N.

## Abstract
Background: Beauveria bassiana is an entomopathogenic fungus widely utilized as a biological control agent against various insect pests, including Spodoptera frugiperda. Objectives: This study aimed to analyze the effect of oil-based formulations on the conidial viability and efficacy of B. bassiana in infecting S. frugiperda larvae. Methods: The research was conducted from May to November 2025. An in vitro study was performed to observe conidial viability across various formulations over storage periods ranging from 7 to 35 days at room temperature. Subsequently, an in vivo assay was conducted to evaluate the efficacy of the two most viable formulations against S. frugiperda larvae in comparison to a control group. The tested treatments included B. bassiana combined with sterile distilled water (control), paraffin oil, virgin coconut oil (VCO), soybean oil, and glycerol. Results: Results indicated that the VCO formulation exhibited the highest conidial viability after 35 days of storage (69.2% germination), followed by paraffin oil (55.4%), soybean oil (47.6%), and glycerol (41.4%), while the control showed the lowest viability (25.0%). Both VCO and paraffin oil formulations achieved 100% larval mortality by the seventh day. In contrast, the control group reached only 98% mortality by the tenth day, with some larvae successfully pupating. Conclusion: These findings suggest that oil-based carriers, especially VCO, optimally enhance the stability of B. bassiana conidia during storage and increase their infectivity against S. frugiperda. Furthermore, VCO is a superior carrier due to its plantbased origin and environmental sustainability.

## Keywords
- Beauveria bassiana
- Biology
- Bassiana
- Conidium
- Infectivity
- Entomopathogenic fungi
- Entomopathogenic fungus
- Biological pest control
- Larva
- Horticulture
- Microbiology
- Veterinary medicine
- Spodoptera
- Coconut oil
- Garlic Oil
- Metarhizium anisopliae
- Botany
- Food science
- Beauveria
- Exigua
- Fungus
- Respirometry

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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