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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 10 No 5 (2014)" : 5 Documents clear

Interaksi antara Bakteri Endofit dan Bakteri Perakaran Pemacu Pertumbuhan Tanaman dalam Menekan Penyakit Layu Bakteri pada Tomat Abdjad Asih Nawangsih; Fitri Fatma Wardani
Jurnal Fitopatologi Indonesia Vol 10 No 5 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

One of the factors affected production of tomato is the incidence of bacterial wilt disease caused by Ralstonia solanacearum. An alternative control to manage the disease which is environmentally friendly is the use of biocontrol agents. Application of endophytic bacteria (Staphylococcus epidermidis BC4) and plant growth promoting rhizobacteria (Pseudomonas fluorescens RH4003 and Bacillus subtilis AB89) as biocontrol of tomato bacterial wilt was expected to be an alternative method. The objective of this study is to evaluate the interaction among endophytic bacteria and PGPR to suppress the development of bacterial wilt disease (R. solanacearum) and promoting the growth of tomato. Bacterial treatment which caused the highest suppression on disease incidence was single application of P. fluorescens RH4003. Disease index caused by S. epidermidis BC4 and P. fluorescens RH4003 applied individually was up to 41.18 dan 45.88%, respectively. Interaction between the endophytic bacteria and both of the PGPRs were antagonistic.

Pengendalian Penyakit Busuk Buah Phytophthora pada Kakao dengan Cendawan Endofit Trichoderma asperellum Andi Akbar Hakkar; Ade Rosmana; Muhammad Danial Rahim
Jurnal Fitopatologi Indonesia Vol 10 No 5 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

The Phytophthora pod rot (PPR) caused by Phytophthora palmivora is one of important diseases affecting the decrease of cacao productivity. The use of endophytic Trichoderma have a big potential for controlling this disease. The rate of PPR incidence in twelve weeks after three times application by spraying of ART-4/G.J.S 09-1559 isolate of Trichoderma asperellum with concentration of 1 g L-1, 2 g L-1, 4 g L-1 was 5.4%, 5.3%, and 3.7%, respectively per week; while the rate of PPR incidence on control was 8.4% per week. Apparently healthy pods pretreated with above concentrations of T. asperellum in field showed 30, 0, and 0% infested by PPR on its surface, respectively after one week incubation in laboratory, compared to a 90% of surface infestation by PPR on control. After 12 week of inoculation, T. asperellum was recovered from pod tissue. This data demonstrated the potential of T. asperellum as bio control agent of PPR disease on cacao.

Formula Pelet Berbahan Aktif Trichoderma sp. dan Aplikasinya terhadap Penyakit Rebah Kecambah pada Tanaman Mentimun Bonny Poernomo Wahyu Soekarno; Surono Surono; Susanti Susanti
Jurnal Fitopatologi Indonesia Vol 10 No 5 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Cucumber (Cucumis sativus) is an important vegetable comodity in Indonesia, but its production rate is still low. One of the factors that cause the low productivity is plant diseases. Damping-off disease often causes the damage of cucumber plant caused by a fungus that lives in the soil as soilborne disease, Phytium sp. The controlling effort of this disease have been done, for example using Trichoderma sp. as bio-agent, but the utilization of the bio-agent still is not practical so it is difficult to be applied in field. The pellet formula is more effective to be implemented because of the small size and easily moved. The purpose of this research was to produce the pellet formulation with active material of Trichoderma sp. with rich nutritious content, cheap and easy carrier. This research used two tests, in vitro and in vivo test. The in vitro test used six different pellet formulations, DAT, UAT, TAT, PAT, DDS and ATS. The best formulation in in vitro test are UAT and DDS, then the formulas were used in in vivo test. Both formulas could suppress the pathogenic fungus, Pythium, in vivo test.

Kompatibilitas Bacillus spp. dan Aktinomiset sebagai Agens Hayati Xanthomonas oryzae pv. oryzae dan Pemacu Pertumbuhan Padi Candra Putra; Giyanto Giyanto
Jurnal Fitopatologi Indonesia Vol 10 No 5 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae is an important disease on rice. The bacteria is seed borne and survives for a long time in the seed. Some beneficial microbes, such as Bacillus spp. and actinomycetes has been reported as biocontrol agents for the disease. The objectives of the research was to select isolates of actinomycetes as biocontrol agents for X. oryzae pv. oryzae which is also compatible with Bacillus spp. by seed application. Actinomycetes isolated from soil was selected using dual culture method on agar medium and on growing medium composing of mixture of soil and manure (1:1 w/w). Three isolates out of 16 isolated actinomycetes, i.e. APS 7, APS 9, and APS 12 showed antagonistic activities against X. oryzae pv. oryzae and compatible with Bacillus spp. Both Bacillus spp. and actinomycetes was applied to rice seed variety Ciherang using seed coating method in formulation containing rice husk. Actinomycetes treatment using APS 9 isolate was able to suppress population of X. oryzae pv. oryzae by (88.89%) and induce crown growth by 36.13%. The highest percentage of seedling emergence was obtained on combination treatment of B12 + APS 7 and single treatment of APS 9, i.e. 83.33% and 79%, respectively and significantly different with those of control treatment (56.67%). Application of Bacillus spp. and actinomycetes on rice seed was able to suppress population of X. oryzae pv. oryzae on rice seedling and induce rice growth.

Pengaruh Kemasaman, Suhu, dan Cahaya terhadap Golovinomyces sordidus Penyebab Penyakit Embun Tepung pada Plantago major Dini Florina; Dyah Manohara; Dono Wahyuno
Jurnal Fitopatologi Indonesia Vol 10 No 5 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Unidentified powdery mildew was found on leaves of a medicinal plant, Plantago major in Indonesia. The present studies were aimed to identify the causal fungal species of powdery mildew of P. major and study the effect of acidity, temperature and light on the causal fungus. Identification was conducted by observing morphological characteristics of the fungus scraped from diseased leaves under light microscope. The infection process was observed by staining the inoculated leaves followed observation under light microscope. Conidia were suspended in various pH solutions to examine effect of pH on conidial germination and hyphal length. For testing effects of temperature on conidial germination and hyphal length, conidial suspensions were dropped onto glass slides then incubated in temperature ranges from 20–35 °C, the germinating conidia and length of the existing hypha were counted and measured 24 hours later. With the same method as above the glass slides were incubated in 25 °C either in the dark or exposed under illuminated white light tube (400 Lux) for study effect of light on conidial germination. The causal fungus was identified as Golovinomyces sordidus (syn. Erysiphe sordida) with its anamorph state as Oidium. The germinating conidia penetrate directly into leaf tissue within 24 hours. The optimal conditions for the conidia to germinate are pH between 4 and 7, temperature between 25 °C and 30 °C, and dark condition.

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