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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 6 (2013)" : 5 Documents clear

Respons Curvularia lunata Penyebab Penyakit Bercak Daun Kelapa Sawit terhadap Berbagai Fungisida Agus Susanto; Agus Eko Prasetyo
Jurnal Fitopatologi Indonesia Vol 9 No 6 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Leaf spot disease of oil palm caused by Curvularia sp. is the major disease in nursery. Implementation of best nursery practices is the key to prevent it. Generally, fungicides are used only if epidemic of leaf spot diseases occur in the field. The objectives of this research were to determine causal agent of leaf spot disease of oil palm and the potential alternative weed host around the nursery, to select suitable fungicides, and to study the effect of fungicides rotation to disease incidence. The results showed that the causal agent of leaf spot disease of oil palm was Curvularia lunata. The fungus was also found on grasses, Cyperus rotundus and Imperata cylindrica. Difeconazol, copper oxide, and propineb suppressed leaf spot disease in nursery. Application of fungicide by rotation between difeconazol and copper oxide with frequency every 10 days suppressed the development of leaf spot disease of oil palm in the nursery.

Potensi Cuka Kayu Pinus dalam Pengendalian Penyakit Antraknosa pada Cabai Merah Sri Hartati; Rika Meliansyah; Lindung Tri Puspasari
Jurnal Fitopatologi Indonesia Vol 9 No 6 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Anthracnose disease caused by Colletotrichum capsici is a major disease on red chili which causes great economic losses. Wood vinegar, as a result of condensation of smoke, can be used as bactericide and fungicide. The use of pine wood vinegar is prospective for controlling anthracnose disease. The objective of this research was to study the potency of pine wood vinegar in controlling anthracnose on red chili. In vitro test was carried out to measure the inhibition of pine wood vinegar against the growth of mycelium mass and the germination of the conidium of C. capsici. The treatments were the concentration of the pine wood vinegar, i.e. 0, 1.5, 2.5, 3.5, 4.5, and 5 %, and a fungicide (2% of antracol) as comparison. The results showed that the lower the concentration of the pine wood vinegar, the lower the inhibition of the mycelium growth. The highest inhibition of the mycelium growth (76.1%) was caused by 5% of the pine wood vinegar, followed by 41.04% inhibition caused by 4.5% concentration. There was no germination of the conidium on all treatments.

Aplikasi Formula Cair Pseudomonas fluorescens P60 untuk Menekan Penyakit Virus Cabai Merah Loekas Soesanto; Endang Mugiastuti; Ruth Feti Rahayuniati
Jurnal Fitopatologi Indonesia Vol 9 No 6 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Viral diseases of chilli pepper are difficult to control, therefore the use of Pseudomonas fluorescens P60 should be evaluated. The aims of this research were to determine the influence of liquid formula of P. fluorescens P60 on virod disease and on growth and yield of chili pepper. Randomized block design (RBD) experiment was composed of 7 treatments and 4 replicates, i.e., control, insecticide applicaton, P. fluorescens P60 application by seedling drenching and spraying for 1, 2, 3, 5, and 7 times. The result showed that 5 times application of P. fluorescens P60 by drenching and spraying was able to suppress viral disease and reduce disease intensity by to 73.37%, increasing density level of P. fluorescens P60 to 9.50 x 1011 and increase phenolic compounds (saponin, tannin and glycoside). The same treatment could increase plant height 23.7%, root lenght 6.44%, plant dry weight 66.68%, root dry weight 23.59%, and yield weight 53.16%.

Patogenisitas Virus Tungro pada Varietas Tetua Padi Tahan Tungro R Heru Praptana; Y B Sumardiyono; Y Andi Trisyono
Jurnal Fitopatologi Indonesia Vol 9 No 6 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Tungro is one of the major diseases in rice which has become a constraint in increasing rice production in Indonesia. Tungro is caused by infection of two different viruses, i.e. Rice tungro bacilliform virus (RTBV) and Rice tungro spherical virus (RTSV), both of which can only be transmitted by green leafhoppers Nephotettix virescens (Distant) in a semipersistent manner. Since there is an indication of the existance of virulence variation of tungro viruses from different areas and the specific relationship between resistance of varieties and tungro viruses isolates, it is important to study the pathogenicity of tungro viruses from some endemic areas in Indonesia. This study aimed to identify the pathogenicity of tungro viruses from several endemic areas in Indonesia in some resistant varieties. One susceptible variety i.e. TN1 and ten resistant varieties were used in the study. Surveys and collection of infected plants and green leafhoppers were done in tungro endemic areas, namely West Java, Central Java, Yogyakarta, Central Sulawesi, West Sulawesi, South Sulawesi, Bali and West Nusa Tenggara. Artificial transmission using the test tube method was used in the pathogenicity test. Green leafhoppers caught from the field were used as transmitters.. The pathogenicity of tungro viruses were identified by the values of the incidence of tungro and the diseases indexes (DI). The result showed that difference in pathogenicity of tungro viruses in some resistant varieties was observed. Isolates from Central Java, Central Sulawesi and West Nusa Tenggara were able to infect all of resistant varieties and the pathogenicity of Central Java isolate was the highest among the other isolates.

Deteksi dan Identifikasi Potyvirus pada Ubi Jalar di Tana Toraja, Sulawesi Selatan Laras Anjarsari; Gede Suastika; Tri Asmira Damayanti
Jurnal Fitopatologi Indonesia Vol 9 No 6 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Typical viral symptoms including chlorotic and uneven interveinal yellowing on leaves without leaf malformation was observed on sweet potato field in Tana Toraja, South Sulawesi. To identify the causal of the disease, reverse transcription-polymerase chain reaction (RT-PCR) and DNA sequencing were carried out to detect the virus from infected plants. RT-PCR using universal primer for C1 gene of Potyvirus was successfully amplified approximately 683bp DNA fragment. The nucleotide sequences of this C1 gene fragment showed 98% homology to Sweet potato virus G (SPVG). Amplification using specific primer for coat protein (CP) gene of SPVG followed by DNA sequencing confirmed the association of SPVG from infected plants. Further nucleotide analysis shwowed that SPVG isolate from Tana Toraja had 99.2% homology to isolate from Japan. This is the firstt report of SPVG infection on sweet potato in South Sulawesi.

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Jawa barat

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