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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 12 No 1 (2016)" : 5 Documents clear

Potensi Metabolit Sekunder Cendawan Endofit Tanaman Cabai sebagai Penghambat Fusarium sp. Patogen Asal Biji Secara in Vitro Dewi Novina Sukapiring; Bonny Poernomo Wahyu Soekarno; Titiek Siti Yuliani
Jurnal Fitopatologi Indonesia Vol 12 No 1 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Endophytic fungi was known as controlling agents to pathogenic fungi, including Fusarium oxysporum. This research was aimed to select endophytic fungi from pepper which produced secondary metabolites and have beneficial effect in controlling seed borne pathogen especially Fusarium sp. Four isolates was obtained, i.e. CECL 19, CECL 28, CECL 38, and CECL 40; and further examined in 3 media fermentation, i.e. yeast glucose broth, potato dextrose broth, and potato dextrose yeast broth. Metabolites of endophytic fungi was tested in vitro for its inhibition effect on the growth of Fusarium sp. The result showed that the type of fermentation medium was significantly determining the ability of endophytic fungi in inhibiting the growth of Fusarium sp. Medium PDA and DEC was determined as the best medium to optimize metabolite production of CECL 28 and CECL 18, respectively. Metabolite compound produced by CECL 28 has been effective to inhibited Fusarium sp.

Tanggap Genotipe Kacang Tanah Terhadap Penyakit Bercak Daun Cercospora dan Karat Daun Puccinia Alfi Inayati; Eriyanto Yusnawan
Jurnal Fitopatologi Indonesia Vol 12 No 1 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Leaf spot and rust are two important diseases on groundnut. Both diseases are frequently found at the same time that influence the growth and reduce the yield of groundnut. This study was conducted to evaluate thirteen groundnut genotypes resistance to leaf spot and rust disease. The experiment was conducted using a split plot design and three replications, with inoculated and uninoculated treatment as main plot, and groundnut genotypes as the sub plot. Disease assessment was conducted by counting number of pustules per leaf, the number of spots per leaf, rust disease intensity, the intensity of leaf spot disease, and leaf area index. Yield components including stover weight, number of pods per plant, number of empty pods, number of chipo pods, and weight of pods per plant were recorded for both inoculated and uninoculated plants. The result showed that leaf spot disease developed earlier than rust disease. Only one genotype was susceptible to rust and the other 12 genotypes were very susceptible, whereas all genotypes tested were very susceptible to leaf spot. The intensity of rust and leaf spot diseases was negatively correlated with yield (r = - 0.1 – (0.4)). Rust and leaf spot diseases reduced the yield components including stover weight (73.2%), number of pods (68%), and weight of pods (72.5%). The number of empty pods and chipo pods were increase to 81% and 56.4% respectively.

Lama Penyimpanan, Karakterisasi Fisiologi, dan Viabilitas Bakteri Endofit Bacillus sp. dalam Formula Tepung Diana putri; Abdul Munif; Kikin Hamzah Mutaqin
Jurnal Fitopatologi Indonesia Vol 12 No 1 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Endophytic bacteria can be formulated to retain its ability as disease control agents. Three of endophytic bacteria which had the capability to suppress infection of Meloidogyne sp, and to enhance pepper growth were gained from the previous study. This research was aimed to evaluate the influence of storage time on the viability of endophytic bacteria, Bacillus sp. AA2, Bacillus sp. MER and MSJ, and to study its physiological charaterization during storage. The formulation evaluated in this study was : formulation 1 (50 g talc, 1 g pepton, 0.5 g CMC, and brown sugar 1.5 g), formulation 2 (50 g talc, 1 g pepton, 0.5 g CMC, and 1.5 g white sugar), formulation 3 (50 g talc, 1 g pepton, 0.5 g CMC, 1 g yeast extract, and 1.5 gwhite sugar) and formulation 4 (50 g talc, 1 g pepton, 0.5 g CMC, 1 g yeast extract, 3 mL molasses, 1 gbentonite, 0.75 g calcium carbonate, and 1 g dextrose). The results of the bacterial characterization showed that Bacillus sp AA2 and Bacillus sp MER belongs to Gram positive, produced lipase and protease enzyme, as well as IAA hormone. N2 fixation is only existed in Bacillussp. AA2 and MSJ isolate. The highest viability was shown on MSJ isolate with 2.5×106 cfu mL-1. in the fourth formulation, whereas Bacillus sp. AA2 and Bacillus sp. MER viability was 1.9×106 cfu mL-1. and 1.2×106 cfu mL-1. , respectively.

Pelet Bakteri Probiotik untuk Biokontrol Xanthomonas oryzae pv. oryzae dan Viabilitas Benih Padi Anak Agung Keswari Krisnandika; Eny Widajati; Wawan Hermawan; Giyanto Giyanto
Jurnal Fitopatologi Indonesia Vol 12 No 1 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Probiotic bacteria collection from the rice plant tissue (i.e. endophytic 467 and endophytic 748 isolates), the rhizosphere (Ralstonia pickettii TT47) and that from the ground (actinomycetes 6) has been reported as biocontrol agents. The effect of pellet containing probiotic bacteria to suppress Xanthomonas oryzae pv. oryzae pathogen in rice seed has not been known thoroughly. This research was carried out to evaluate the effect of pellet containing probiotic bacteria in maintaining viability of rice seeds infected by X. oryzaepv. oryzae. A dual culture method was used to test the antagonistic activities between probiotic bacteria and X. oryzaepv. oryzae. Isolates R. pickettii TT47, endophytic 467 and actinomycetes 6 showed antagonistic activities against X. oryzae pv. oryzae. Among them, only endophytic 467 and actinomycetes 6 that showed compatibility. Pellet formulation (talc + CMC 1.5% + glycerol 1%) contain actinomycetes 6 singly or combination with endophytic 467 in infected Ciherang rice seed was able to suppress population X. oryzaepv. oryzae as long as 6 weeks storage. While, the highest percentage of seed germination and seedling growth rate during 6 weeks storage was obtained on pellet formulation with R. pickettii TT47, i.e. 86.67% and 17.17% etmal-1 respectively and significantly different with infected nonpelleted rice seed (62.67% and 11.02% etmal-1). In conclusion, the application of probiotic bacteria R. pickettii TT47, endophytic 467 and actinomycetes 6 in pellet formulation was effective to decrease X. oryzaepv. oryzae and maintain viability of infected rice seed in 6 weeks storage.

Tingkat Infestasi Aphelenchoides besseyi pada Benih Padi di Bogor Fitrianingrum Kurniawati; Supramana Supramana
Jurnal Fitopatologi Indonesia Vol 12 No 1 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

The white tip disease on rice plants have been discovered in the district of Bogor, i.e. in Sukamakmur, Petir, and Muara Experimental Station areas. The infected plant exhibited symptoms, involving whiten leaf tip 3–5 cm that later turn to necrosis, twisted and crinkled. The disease is supposed caused by a parasitic nematode, namely Aphelenchoides besseyi, which is known seed borne. Extraction of nematodes based on ISTA protocols on rice was conducted. Seeds from eight varieties, SL8SHS, Hybrid Rice (HIPA14), IPB 3S, IR-64, Pertiwi (Pak Tiwi), Inpari 31, Pandan Wangi Bogor (Sintanur) and Ciherang, was obtained from seed vendors in Bogor and Muara Experimental Station. The majority of nematodes recovered were females and only few males with morphological characteristics matching with A. besseyi. All seed rice varieties tested contained A. besseyi with the average of 3–341 nematodes per 5 g seed.

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