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All Journal Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Arika Purnawati
Master of Agrotechnology Study Program, Faculty of Agriculture, Universitas Pembangunan Nasional "Veteran" Jawa Timur
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Health Professions

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EFFECTIVENESS OF Bacillus spp. IN CONTROLLING Fusarium sp. AND ITS EFFECT ON GROWTH AND PHYTOCHEMICAL OF SHALLOT (Allium ascalonicum L.) Yuningsih Yuningsih; Yenny Wuryandari; Arika Purnawati
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 13 No. 1 (2026)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

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Abstract

Shallot (Allium ascalonicum L.) is a key horticultural crop in Indonesia, but its productivity is constrained by moler disease caused by Fusarium sp. Chemical fungicides have limited effectiveness and raise environmental concerns, necessitating eco-friendly alternatives such as Bacillus spp. This study aimed to evaluate the potential of Bacillus spp. in suppressing moler disease and promoting shallot growth and resistance. A factorial Completely Randomized Design (CRD) was employed under in vitro and in vivo conditions, with two factors: Fusarium sp. inoculation (with and without) and Bacillus spp. treatments (control, Bcz 14, and Bcz 20). Results demonstrated that Bacillus spp., particularly isolate Bcz 20, significantly reduced disease intensity by up to 73.91% and delayed symptom development. Moreover, Bacillus spp. enhanced plant growth and induced the accumulation of flavonoids and saponins. These findings indicate that Bacillus spp. function as effective biological control agents and plant growth promoting rhizobacteria (PGPR), offering a sustainable strategy to improve shallot productivity while reducing reliance on chemical fungicides.
EFFECTIVENESS OF Bacillus spp. IN CONTROLLING Fusarium sp. AND ITS EFFECT ON GROWTH AND PHYTOCHEMICAL OF SHALLOT (Allium ascalonicum L.) Yuningsih Yuningsih; Yenny Wuryandari; Arika Purnawati
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 13 No. 1 (2026)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Shallot (Allium ascalonicum L.) is a key horticultural crop in Indonesia, but its productivity is constrained by moler disease caused by Fusarium sp. Chemical fungicides have limited effectiveness and raise environmental concerns, necessitating eco-friendly alternatives such as Bacillus spp. This study aimed to evaluate the potential of Bacillus spp. in suppressing moler disease and promoting shallot growth and resistance. A factorial Completely Randomized Design (CRD) was employed under in vitro and in vivo conditions, with two factors: Fusarium sp. inoculation (with and without) and Bacillus spp. treatments (control, Bcz 14, and Bcz 20). Results demonstrated that Bacillus spp., particularly isolate Bcz 20, significantly reduced disease intensity by up to 73.91% and delayed symptom development. Moreover, Bacillus spp. enhanced plant growth and induced the accumulation of flavonoids and saponins. These findings indicate that Bacillus spp. function as effective biological control agents and plant growth promoting rhizobacteria (PGPR), offering a sustainable strategy to improve shallot productivity while reducing reliance on chemical fungicides.
Co-Authors Yenny Wuryandari Yuningsih Yuningsih