Risdiyanti, Rateh (2023) ANTAGONISME Streptomyces spp. TERHADAP Alternaria porri PENYEBAB PENYAKIT BERCAK UNGU PADA TANAMAN BAWANG MERAH (Allium ascalonicum L.). Undergraduate thesis, UPN VETERAN JATIM.
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Abstract
Alternaria porri is a purple botch fungus on shallots, this fungus can cause a loss of 3 – 57%. A. porri were obtain from Sumber Brantas shallots farmland then it was isolate using infected tissue planting method. Streptomyces spp. is a filamentous bacterium that is abundant in the soil and can be used as a biological agent, Streptomyces spp. were obtain from one location Pare. Kediri. East Java (BSP) and three location Sidera. Palu. Central Sulawesi (BSS1, BSS2,BSS3). The purpose of this study was to determine the effectiveness of Streptomyces spp. obtained from shallot fields in Pare, Kediri, East Java and Sidera, Palu, Central Sulawesi. This study was designed using CRD (Complete Randomized Design) consist of in vitro and In vivo test. In vitro test will be using dual culture method on PDA medium where A. porri and Streptomyces spp. will be planted on the same petri dish. In vivo test will be conducted using the best result from the In vitro test where the Streptomyces spp. will be diluted into 5%, 10%, and 15%, it will applied on shallot plant Bauji variety. The results of the In vitro test were based on highest inhibition zone from Streptomyces spp. Pare 17.75% while Streptomyces spp. Sidera 1 13.75%, while Streptomyces spp. Sidera 2 8,75%, and while Streptomyces spp. Sidera 3 8.50%. In vivo test were based on lowest disease severity value using the concentration of 15% from Streptomyces spp. Pare 1.13%, Streptomyces spp. Sidera 1 1.27%, and Streptomyces spp. Sidera 2 1.80% Keywords: Alternaria porri. Streptomyces spp. shallot
| 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 > SB Plant culture > SB599-990.5 Pests and Diseases |
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| Depositing User: | Rateh Lailatul Risdiyanti | ||||||||||||
| Date Deposited: | 27 Jan 2023 08:30 | ||||||||||||
| Last Modified: | 27 Jan 2023 08:30 | ||||||||||||
| URI: | http://repository.upnjatim.ac.id/id/eprint/11543 |
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