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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 412 Documents

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Serangan Tribolium castaneum pada Beras di Penyimpanan dan Pengaruhnya terhadap Serangan Cendawan dan Susut Bobot Okky Setyawati Dharmaputra; Hariyadi Halid; Sunjaya Sunjaya
Jurnal Fitopatologi Indonesia Vol 10 No 4 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Tribolium castaneum is an important insect pest of stored milled rice in Indonesia. The effect of T. castaneum on fungal infection of stored milled rice was investigated together with moisture content and weight loss. Milled rice were placed in glass jars (250 g/jar) and infested with 5, 10, and 20 pairs of T. castaneum. As control, the jars contained only milled rice. Three replications were made for each treatment (including the control). The jars were stored in storage room for 1, 2, and 3 months. Moisture contents (based on wet weight) of milled rice were determined using the oven method. Fungi were isolated and enumerated using dilution plating, followed by pour plate method on Dichloran 18% Glycerol Agar (DG18). Weight loss (based on dry weight) was determined after 3 months of storage.The results showed, that the population of adult T. castaneum increased with the increase in the number of pairs of infested T. castaneum and storage duration. The moisture contents of milled rice were relatively constant during storage. It was assumed, that the moisture contents were more influenced by the environmental conditions rather than the occurrence of T. castaneum. Nineteen fungal species were isolated Aspergillus flavus and Penicillium citrinum were the dominant fungal species. Total fungal population decreased after 2 and 3 months of storage, with the increase in the number of pairs of infested T. castaneum. Weight loss increased with the increase in the number of pairs of infested T. castaneum. Based on weight loss of milled rice, the best storage duration was found when the number of pairs of T. castaneum was five pairs, the duration of storage was 1, 2 or 3 months of storage.

Aplikasi Trichoderma koningii dan Pseudomonas berfluoresensi untuk Pengendalian Penyakit Cabai di Minahasa, Sulawesi Utara Johanna Maartje Paath; Max Ratulangi
Jurnal Fitopatologi Indonesia Vol 10 No 4 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Major diseases on chili in Minahasa are bacterial wilt, anthracnose, and mosaic caused by virus infection. The objectives of this research were to evaluate the effectiveness of two microbes, Trichoderma koningii and fluorescent Pseudomonas, as biocontrol agents for major diseases of chili. Field experiment was conducted in Toure Village, Tompaso Baru, District of Minahasa. The treatments used were without biocontrol agents, T. koningii, fluorescent Pseudomanas, combination of T. koningii and fluorescent Pseudomanas. The results indicated that application of T. koningii, fluorescent Pseudomonas, and combination of the two biocontrol agents were only successfully suppressed incidence of bacterial wilt, but not of anthracnose nor mosaic diseases. Combination of the two biocontrol agents were able to improve yield of chili.

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.

Infeksi Bean common mosaic virus pada Umur Tanaman Kacang Panjang yang Berbeda Hamdayanty Hamdayanty; Tri Asmira Damayanti
Jurnal Fitopatologi Indonesia Vol 10 No 6 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bean common mosaic virus (BCMV) is one of the most important virus infecting yard long bean because it can decrease yield and seed transmitted. The aims of research were to determine the effect of plant age infected by BCMV on seed transmission efficiency of the virus, as well as its effect on plant growth. BCMV was mechanically inoculated on yard long bean at 1, 2, 3, and 4 weeks after planting (WAP). Observation was conducted for incubation period, disease incidence and severity, seed transmission efficiency of the virus, plant height, and productivity of the plants. Virus infection was detected using indirect ELISA method. The results showed that the earlier infection of BCMV occurred the shortest incubation period, the most severe symptoms, the highest inhibition of plant growth, and productivity. Disease severity was 94.6, 83.8, 81.1, and 69.6% on plants inoculated at 1, 2, 3, and 4 WAP, respectively. Disease incidence and virus titer was not affected by infection on different plant age. Seed transmission of BCMV was 7, 66, 39, and 24% on plants inoculated at 1, 2, 3, and 4 WAP, respectively. Infection on 2 WAP was considered the critical times for BCMV to be seed-borne on yard long bean.

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.

Integrasi Teknik Invigorasi Benih dengan Rizobakteri untuk Pengendalian Penyakit dan Peningkatan Hasil Tomat Gusti Ayu Kade Sutariati; Abdul Madiki; Andi Khaeruni
Jurnal Fitopatologi Indonesia Vol 10 No 6 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

The effects of pre-planted seed invigoration treatment integrated with rhizobacteria were studied in an attempt to control fusarium wilt disease and to improve yield of tomato in the field. Seed treatments consisted of seed invigoration with single or mixture rhizobacteria, burned rice husk or sawdust seed matriconditioning, integrated seed matriconditioning with single or mixture rhizobacteria, seed hydration, and fungicide seed treatment. The result showed that the most effective treatment was the integration of rice hull charcoal seed matriconditioning with Bacillus polymixa BG25. The seed treatment increased total fruit and fruit weight by 40% and 166% , respectively. The treatment was also effective in suppressing disease incidence by 70%. Based on this experiment, rhizobacteria B. polymixa BG25 integrated with rice hull charcoal seed matriconditioning can be recommended as biocontrol agents in improving yield and controlling fusarium wilt disease of tomato.

Keparahan Penyakit Daun Keriting Kuning dan Pertumbuhan Populasi Kutukebul pada Beberapa Genotipe Cabai Nissa Fawwaz Adilah; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol 10 No 6 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Incidence of yellow leaf curl disease on chili pepper is very common in Indonesia and becomes major production constrain. The causal agent, Pepper yellow leaf curl virus (PYLCV), is only transmitted by insect vector, i.e. whitefly (Bemisia tabaci). Research was conducted to determine response of 6 chili pepper genotypes [Meteor, Rimbun, Tornado, F1(12X14), IPBC12, and 35C2] against infection of PYLCV and population growth of whitefly on each genotypes. Transmission of PYLCV to chili pepper genotypes was done using whitefly. Whitefly was maintained on each chili pepper genotypes to evaluate its population growth. Genotype IPBC12 was resistant to PYLCV having disease severity 0–9.2% and showed mild symptom. Genotypes Rimbun, Meteor, Tornado, F1(12X14), and 35C2 were susceptible having disease severity >20% and showed severe symptom. Resistance of IPBC12 might be correlated with the growth of whitefly on the genotype. The amount of whitefly eggs and its successful rate to become adult was relatively lower in IPBC12 than those in other genotypes. Genotype IPBC12 might be considered as resistance source in developing resistant variety of chili pepper to PYLCV.

Pendugaan Parameter Genetik Ketahanan Tanaman Cabai terhadap Penyakit Antraknosa Syaidatul Rosidah; Muhamad Syukur; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 10 No 6 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Fruits of chili pepper as crossing population between C15 and C2 genotype were used to study genetic parameter of resistance for anthracnose disease caused by Colletotrichum acutatum. Twenty mature green chili pepper fruits from each plant were inoculated by C. acutatum PYK 04 isolate. The results showed that resistance to anthracnose in chili pepper was controlled by recessive gene. Broad-sence heritability were high for both disease incidence and necrotic diameter. Narrow-sence heritability were high for stem diameter and low for necrotic diameter. Additive-variance ratio were high for disease incidence and medium for necrotic diameter. Development of resistance varieties of chili pepper to anthracnose should be subjected to line varieties.

Penyakit Kerupuk Tembakau di Sumatera Barat Jumsu Trisno; Rahil Ade Rifqah; Martinius Martinius
Jurnal Fitopatologi Indonesia Vol 10 No 6 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Tobacco leaf curl disease (“kerupuk”) is a new disease on tobacco in West Sumatra. This disease has spread throughout the tobacco planting area in District Limapuluh Kota with intensity of 2.5–26.3%. DNA fragment of 1600 bp was successfully amplified using polymerase chain reaction method with primer pairs for Begomovirus PAL1v 1978/PAR1c 715 from tobacco leaves showing symptoms. This result indicated Begomovirus infection. Sequence analysis based on NCBI BLAST program showed that Begomovirus infecting tobacco in West Sumatera has the highest homology of 89% and 91–97% with Pepper yellow leaf curl Indonesia Virus infecting tomato and chili pepper in West Sumatera, respectively. This is considered as the first report of Begomovirus infection on tobacco in West Sumatra.

Page 9 of 42 | Total Record : 412

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