Nabiella, Aullyvia Putri (2026) Efektivitas Agensia Antagonis Beberapa Isolat Bakteri Bacillus spp. Terhadap Penyakit Antraknosa (Colletotrichum capsici) pada Buah Cabai (Capsicum annuum L.). Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Red chili (Capsicum annuum) is a high-value horticultural commodity, but its production often declines due to anthracnose disease attacks caused by Colletotrichum capsici. Control is still dominated by the use of high-dose chemical fungicides and has the potential to be negative for the environment, so an environmentally friendly alternative is needed by utilizing antagonistic bacteria Bacillus spp. However, research on the effectiveness of Bacillus spp. against C. capsici, especially on differences in population density and fruit detachment testing, is still limited and has not been widely reported. The study was conducted in vitro with inhibitory testing using five Bacillus spp. isolates, namely Bcz-14, Bcz-16, Bcz-20, Bcz-21, and Bcz-30 at densities of 10⁹ and 10¹⁰ CFU/mL and in vivo by taking the 3 best treatments in the in vitro test. The data results were analyzed using the SPSS (Statistical Package for the Social Science) version 24 application using the ANOVA test at a significance level of 5%, followed by a 5% BNJ test if there was a significant difference. The results of the study showed that the B1K1 treatment (Bcz-14 density of 109 CFU/mL) with an inhibitory power of 5.83 mm, B5K1 (Bcz-30 density of 109 CFU/mL) with an inhibitory power of 5.50 mm, and B2K1 (Bcz-16 density of 109CFU/mL) with an inhibitory power of 4.16 mm provided the best results in in vitro tests with the most stable inhibitory power values in suppressing the growth of C. capsici. The results of in vivo tests showed that the B1K1 treatment (Bcz-14 density of 109 CFU/mL) provided the best results in suppressing disease intensity by up to 26.25% and produced an effectiveness of 51.16%. Keywords: anthracnose, red chilli, Colletotrichum capsici, Bacillus spp., biological control
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > SB Plant culture > SB950-989 Pest Control and Treatment of Diseases, Plant Protection S Agriculture > S Agriculture (General) |
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| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Aullyvia Putri Nabiella | ||||||||||||
| Date Deposited: | 03 Jun 2026 04:17 | ||||||||||||
| Last Modified: | 03 Jun 2026 04:17 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/53568 |
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