RANI, SASISKA (2021) POTENSI BAKTERI Bacillus spp. DALAM MENEKAN PERTUMBUHAN JAMUR Colletotrichum capsici PENYEBAB PENYAKIT ANTRAKNOSA PADA TANAMAN CABAI MERAH (Capsicum annuum L.). Undergraduate thesis, UPN "VETERAN" JAWA TIMUR.
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Abstract
One of the main problems in the production of red chili is anthracnose disease that caused by Colletotrichum capsici pathogen. Chemical control isn’t recommended because it has a negative impact on the environment and humans. Bacillus spp. has the potential to suppress the growth of pathogens and spur the growth of plant. This study aims to determine the effectiveness of five bacterial isolates of Bacillus spp. there are Ba-6, Ba-9, Ba-12, Ba-15, and Ba-17 in suppressing the growth of the C. capsici pathogenic fungus and stimulating the growth of red chili. The tests were carried out by in vitro and in vivo. In vitro testing was carried out with PDA media antagonists and detach fruit. The parameters observed were the percentage of inhibition, hyphal morphology, incubation period, and disease intensity in chili. In vivo testing was carried out by immersing roots of plant in a suspension of Bacillus spp. density of 109 cfu/ml. Parameters observed included the growth of plant (height of plant and number of leaves) and plant resistance (incubation period and disease intensity). The results of in vitro studies showed that the best PDA media antagonist was tested on Bacillus sp. isolate Ba-9 with 23,04% inhibition. Furthermore, in the detachment test of Bacillus sp. Ba-9 isolate was able to suppress the growth of C. capsici by 21,25% compared to control. In vivo studies showed that Bacillus sp. isolate Ba- 15 showed the best results because it was able to suppress the growth of C. capsici by 6,25% compared to the negative control. Bacillus sp. isolate Ba-9 was able to stimulate the growth of chili with an average height of plant 20,10 cm and an average number of leaves 10,49. Keywords: biological agents, red chili, anthracnose, Bacillus sp., C. capsici
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > S Agriculture (General) | ||||||||||||
| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Mujari Mujari | ||||||||||||
| Date Deposited: | 17 Nov 2021 04:30 | ||||||||||||
| Last Modified: | 17 Nov 2021 04:30 | ||||||||||||
| URI: | http://repository.upnjatim.ac.id/id/eprint/3233 |
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