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Jurnal Fitopatologi Indonesia

jfiti
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Published by Institut Pertanian Bogor

ISSN : 02157950 EISSN : 23392479 DOI : -

Core Subject : Health,

Medicine & Pharmacology

Jurnal Fitopatologi Indonesia (JFI) is an official publication owned by the Indonesian Phytopathology Society (Perhimpunan Fitopatologi Indonesia). In 2010, JFI management was given to PFI Komda Bogor. Since then, JFI has been published 6 times (January, March, May, July, September, and November).

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Articles 5 Documents

Search results for , issue "Vol 9 No 5 (2013)" : 5 Documents clear

Aplikasi Cendawan Endofit terhadap Perkembangan Populasi Nematoda Radopholus similis pada Pisang Barangan Lisnawita Lisnawita; Ahmad Rafiqi Tantawi; Mukhtar Iskandar Pinem
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Radopholus similis is a major constraint to banana production in the world including Indonesia and growers have relied on nematicides to manage yield losses. The use of endophytic fungi is one method that may reduce the need for nematicides, however little is known on the effective application method of endophytic fungi to control R. similis. The aim of this research was to find out an effective application method of endophytic fungi to reduce R.similispopulation on banana. Fifteen isolates of endophytic fungi originated from banana corm and root collected from banana plantation in North Sumatera were applied to Barangan cultivar by sowing and deeping methods. The isolates was contained of 11 isolates of Fusarium sp. (2BSTMHMM, 3ASTMHP, 5ASP, 1ASU, 4BSP, 4BJP, 5BKJP, 4BSU, 1BJP, 2 BSP, and 4BKJP) and 4 isolates ofTrichoderma sp. (2BSTMHP, 4BSTMHP, 2BSPH, and 2BSTMHH). All of these endophytic fungi were able to suppress the population of R. similis and they had potential to promote plant growth.

Cendawan Endofit Nonpatogen Asal Tanaman Cabai dan Potensinya sebagai Agens Pemacu Pertumbuhan Evan P. Ramdan; Widodo Widodo; Efi Toding Tondok; Suryo Wiyono; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Endophytic fungi have been reported to have mutual symbiosis with their host. This research aimed to obtain nonpathogenic isolates of endophytic fungi from roots, stems, and branches of chili pepper. Endophytic fungi were isolated on 10% malt extract agar (MEA) after serial surface sterilization of plant parts. The effect of endophytic fungi on the development of chili pepper seeds were tested by growing seeds on media containing endophytic fungi isolate. As many as 138 isolates of endophytic fungi were successfully isolated from chili pepper plants from Garut and Bogor. Based on colony morphology the isolates can be differentiated into 9 morphotypes. Among the total isolates, 13.04% are nonpathogenic. Some of them (7,25%) do not effect seedling significantly compared to control and some isolates (5.79%) caused better seedling growth than control. Endophytic fungi having the potential to promote plant growth was identified as Aspergillus sp., Fusarium sp., Penicillium sp., sterile hyphae 1, 2, and 3.

Penggunaan Galur Lemah Chili veinal mottle virus untuk Proteksi Silang Asniwita Asniwita; Sri Hendrastuti Hidayat; Gede Suastika; Slamet Susanto; Sriani Sujiprihati
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Inoculation of mild virus strain prior to severe virus strain to protect plant against viral disease is the principle of cross protection. Five mild strains of Chili veinal mottle virus (ChiVMV), i.e. -KAR, -SPR, -SKT, -CSR, and -PGL were used as cross protection agent to protect chili pepper plants against severe strain infection of ChiVMV-CKB. The mild strains were inoculated mechanically prior inoculation of severe strain and the efficiency of cross protection was evaluated by observing symptom development and measuring crop yield. Inoculation of mild strains 7 days prior inoculation of severe stain was not able to protect the plant from infection of severe strain ChiVMV-CKB. Protective effect was observed when mild strains were inoculated at 14, 21, and 28 days prior inoculation of severe strain. Symptom development was suppressed or delayed, and crop yield was not significantly different with healthy plants. It was suggested that to obtain the best protection against severe strain, the mild strain should be applied as early as possible before the occurrence of severe strain infection.

Khamir Antagonis untuk Pengendalian Penyakit Antraknosa pada Buah Avokad Selama Penyimpanan Yuli Fitriati; Suryo Wiyono; Ivone Oley Sumarauw
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Anthracnose caused by Colletotrichum gloeosporioides is an important disease in avocado fruit during storage. An effective, cheap, and safe control method is necessary as an alternative to subtitute the use of fungicides in postharvest disease control. This research aimed to identify yeast antagonist from avocados that are effective in controlling anthracnose disease on avocado fruit. Research was started with isolation of C. gloeosporioides and yeast from avocado fruit, followed by in vivo bioassay, antibiosis assay, and chitinolitic activity assay. In vivo bioassay was done by dipping avocado fruit on yeast cell suspension. As many as 23 yeasts isolates was obtained from avocado fruits. Eight yeast isolates (A28, A32, A33, A34, A35, A36, A37, A38) showed very effective for inhibiting anthracnose disease in avocado fruit at concentration of 106 mL-1 and 107 mL-1. However, only four isolates were chosen for further characterization based on morphological and molecular identification. Two species of yeast was identified as Pichia anomala, i.e. isolates A33 and A37 and Candida intermedia, i.e. isolates A35 and A36.

Isolasi dan Penapisan in Vitro Aktinomiset untuk Mengendalikan Xanthomonas Yuvika Yuvika,; Aswardi Nasution; Abdul Gafur
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Nursery disease frequently found on Acacia crassicarpa seedlings is bacterial leaf blight caused by Xanthomonas sp. Disease symptom starts as a small fleck on the leaf which may then develop to leaf strike or leaf blight if the environmental factors are conducive to disease development. Actinomycetes are soil microorganisms that produce biologically active substances such as enzymes and antibiotics. These compounds could inhibit growth of other microorganisms, particularly bacteria. Thus, Actinomycetes are considered as potential candidates of biocontrol agents for plant pathogens. In the current study Actinomycetes isolated from a wide range of localities were screened for their efficacy against Xanthomonas sp. in vitro. The objective of this study was to obtain Actinomycete isolates effective against Xanthomonas, to mitigate impact of the pathogen on quality of A. crassicarpa seedlings. All Actinomycete collections were isolated from soil by a chain of enrichment isolation procedures. The antibiotic activities were investigated through antimicrobial screening tests using paper discs on assay plates. Of the 75 Actinomycete isolates originally collected and screened, 5 isolates showed good antimicrobial activities against Xanthomonas and are therefore considered as potential biocontrol agent candidates.

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