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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 407 Documents

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Potensi Ekstrak Kangkung sebagai Biofungisida untuk Mengendalikan Penyakit Busuk Buah Fusarium pada Tomat Bonny Poernomo Wahyu Soekarno; Surono .; Eva Marhaenis
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

One of the important pathogens on tomato is Fusarium sp. causing wilt and fruit rot. This study aims to investigate the potency of water spinach (Ipomea aquatica) as a biofungicide for inhibiting growth and development of tomato fruit rot caused by Fusarium sp. This study showed inhibiting ability of I. aquatica stem extract to Fusarium sp. growth ranges from 3.40% to 8.67%, while inhibiting ability of leaves extract can reach 3.40% to 45.55%. Resistance induction test showed that in vitro treatment of I. aquatica leaves extract 20% can lengthen incubation time of Fusarium fruit rot compared to positive and negative control. Leaves extract of I. aquatica 20% is potential as biofungicide.Key words: biofungicide, Fusarium sp., Ipomea aquatica

Keragaman Fusarium pada Rizosfer Tanaman Kacang Panjang dan Peranannya bagi Pertumbuhan Tanaman Rahmi Sutrisni; Widodo .
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Fusarium wilt caused by Fusarium oxysporum f.sp. tracheiphilum is one of the important diseases on yard long bean. Besides of its capability of causing diseases in plants, some species of Fusarium are non pathogenic and able to control Fusarium wilt as naturally occured in disease suppressive soils. The objective of this study was to observe the rhizosphere Fusarium diversity and its role on the plant growth of yard long bean. Out of 56 isolates collected during the study, four species were identified, including F. oxysporum (39.3%), F. semitectum (28.6%), F. longipes (12.5%), F. solani (5.3%), and one unidentified Fusarium sp. (14.3%). The highest diversity index was obtained from the field planted with corn as previous crop. In general, 56 isolates tested could be differentiated into 3 groups based on their effects on plan growth, i.e.: deleterious that caused wilting or growth suppressive without wilting (50.0%), neutral that no significantly difference growth as untreated (41.1%), and growth promoting (8.9%). All three isolated Fusarium causing plant wilting identified as F. oxysporum, while isolates with growth promoting effect were identified as F. oxysporum (4 isolates) and F. solani (1 isolate). These five selected growth promoting Fusarium also suppressed the wilt disease and increased the plant growth when co inoculated with wilt pathogen of yard long bean, F. oxysporum f.sp. tracheiphillum.Key words: diversity, Fusarium, long yard bean, rhizosphere

Ketahanan Biokimia Tanaman Cabai terhadap Begomovirus Penyebab Penyakit Daun Keriting Kuning Rokhana Faizah; Sriani Sujiprihati; Muhamad Syukur; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Plant biochemical resistance towards virus infection can be evaluated through measurement of salicylic acid accumulation and peroxidase concentration. A research was conducted to study biochemical resistance of chillipepper to infection of Pepper yellow leaf curl Begomovirus (PYLCV) the causal agent of pepper yellow leaf curl disease. Virus inoculation was done using insect vector, Bemisia tabaci. Salicylic acid accumulation and peroxidase concentration on 6 chillipepper genotypes (35C2, IPB C15, IPB C26, IPB C10, IPB C14, dan IPB C12) was measured 120 h after inoculation. The results showed that salicylic acid accumulation and peroxidase concentration were higher on plants after virus infection. Susceptible genotypes (35C2, IPB C15, IPB C26) tend to have higher salicylic acid accumulation and peroxidase concentration than those of resistant genotype (IPB C12). Positive correlation was observed between biochemical resistance (salicylic acid accumulation) and structural resistance (length of palisade meshophyll cell).Key words: Begomovirus, Pepper yellow leaf curl virus, peroxide enzyme, resistance mechanism, salicylic acid

Perlakuan Udara Panas sebagai Tindakan Karantina terhadap Biji Kedelai Ade Syahputra; Ranta Hadi
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Introduction and dissemination of plant disease agents can be avoided through physical treatment on agricultural commodities as pre and post harvest treatment. Research was conducted to find effective quarantine treatment to eradicate fungi infestation on soybean seed. Four fungi species were chosen for this study, i.e. Cercospora sp., Sclerotium rolfsii, Colletotrichum gloeosporiodes, and Pestalotia sp. The evaluation was conducted for seed, seedling, bean oilcake, and fungi culture using hot air treatment on 45, 50, 55, 60, 65, 70 °C and control for 5 h. In general, heat treatment caused suppression significantly on seed germination and seedling growth. However, heat treatment on 45, 50 and 55 °C resulted on lower infestation of fungi on seed, and no infestation was observed on 65 and 70 °CKey words: eradication, quarantine treatment, heat treatment

Laporan Pertama tentang Infeksi Polerovirus pada Tanaman Cabai di Daerah Bali, Indonesia Gede Suastika; Sedyo Hartono; I Dewa Nyoman Nyana; Tomohide Natsuaki
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

During a visit to Bali Island in September 2011, we found chilipepper plants exhibiting yellowing symptoms. The infected plants showed quite similar symptom to those of the recently reported Pepper yellow leaf curl virus from Israel and Japan, but there was no shortening of internodes or leaf rolling. We have ampliﬁed part of the genome of a virus associated with this disease using degenerate primers for members of the genus Polerovirus. The reverse transcription-polymerase chain reaction (RT-PCR) from symptom-bearing samples resulted in the amplification of a 650 bp band which is the expected size. RT-PCR from healthy samples did not produce an amplicon. Based on our results, we concluded that yellowing disease on chilipepper observed in Payangan, Gianyar, Bali is associated with a virus belonging to the genus Polerovirus. This is the first report on Polerovirus infection in chilipepper in Indonesia. Some researches for elucidation of the virus species and biological/molecular characters are being conducted.Key word: chilipepper, Indonesia, Polerovirus

Lima Ekstrak Tumbuhan untuk Menekan Infeksi Bean common mosaic virus pada Tanaman Kacang Panjang Lulu Kurnianingsih; Tri Asmira Damayanti
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bean common mosaic virus (BCMV) is one of major virus infecting legumes and is difficult to manage. Utilization of plant extracts as systemic resistance inducer against virus is needed to study. The aim of the research is to evaluate the potency of five leaf extracts, i.e. from pagoda flower, spiny amaranth, four o’clock flower, Chenopodium amaranticolor, and herba andrographitis against BCMV. The effectiveness of leaf extracts were tested by spraying yard long bean leaves. Plants treated by spine spinach shown varied symptoms, while other treatments showed mild mosaic up to symptomless. The highest to lowest of disease incidence was showed by crude leaf extract of spine spinach (70%), four o’clock (10%), herba andrographitis (10%), while C. amaranticolor and pagoda are still uninfected. These results had positive correlation to disease severity and virus inhibition. Four of five tested leaf extracts, except spine spinach, showed their potency as systemic resistance inducer against BCMV. Key words: BCMV, plant extract, yard long bean

Pemanfaatan Mulsa Jerami dan Plant Growth Promoting Rhizobacteria untuk Menekan Penyakit Pustul Bakteri pada Tanaman Kedelai Tita Widjayanti; Abdjad Asih Nawangsih; Kikin Hamzah Mutaqin
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bacterial pustule caused by Xanthomonas axonopodis pv. glycines is one of important bacterial diseases of soybean in Indonesia. The development of alternative control of the disease is required to support integrated diseases management for sustainable agriculture. This research was conducted to observe the effect of straw mulch and plant growth promoting Rhizobacteria (PGPR) on the incidence of bacterial pustule disease on two soybean varieties in the farmer field at Cigombong, Sukabumi, West Java. The result of this research showed that all of the factors as combinations did not significantly affect the value of total area under disease progress curve (AUDPC) of bacterial pustule. Factor that significantly affected the values of AUDPC was soybean varieties. Gepak Kuning variety has lowest AUDPC value compared to Anjasmoro variety. In addition, combination of Gepak Kuning variety and straw mulch showed significantly different effect on AUDPC value. Therefore, this treatment combination should be recommended for the farmers.Key word: PGPR, soybean variety, straw mulch, Xanthomonas axonopodis pv. glycines

Keagresifan Beberapa Isolat Fusarium oxysporum f. sp. zingiberi Asal Temanggung dan Boyolali Setelah Penyimpanan dalam Tanah Steril Henky Setyawan Norandika Wahyu; Loekas Soesanto; Kustantinah Kustantinah
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Preservation of fungi isolates is needed for further research but usually the preservation treatment is only concerned on life span and growth of the fungi. This research aimed at knowing life span and aggressivity of Fusarium oxysporum f. sp. zingiberi isolates from ginger cv. Gajah after preserving for three years in sterile soil. Completely Randomized Design and Randomized Block Design were used for in vitro and in planta test, respectively, with 10 isolates of F. oxysporum f. sp. zingiberi from Temanggung, 8 isolates of F. oxysporum f. sp. zingiberi from Boyolali, and 1 control, each repeated three times. Variables observed were incubation period, infected area, disease intensity, rhizome wet weight, number of leaves, and crop height. Result of the research showed that all isolates of F. oxysporum f. sp. zingiberi could still grew well. Based on origin of the isolates, the highest aggressivity on ginger rhizome was TKO3 from Temanggung and BAO6 from Boyolali with infected area of 67.67 mm2 and 56.67 mm2, respectively. On ginger crop, the highest aggressivity was BAO1 from Boyolali and TPO2 from Temanggung with disease intensity of 68.09% and 38.13%, respectively. All isolates of F. oxysporum f. sp. zingiberi did not cause significantly different effect on incubation period, disease intensity, crop height, leaves total, and rhizome wet weight but they caused significantly different effect on infected area. Key word: aggressivity, Fusarium oxysporum, ginger, preservation, steril soil

Etil Format sebagai Perlakuan Alternatif terhadap Colletotrichum gloeosporioides pada Stroberi Ade Syahputra; Nurul Dwi Handayani; Indriani Kusumawati Daud Malvini
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Ethyl formate (EtF) is alternative fumigant to substitute methyl bromide. The objective of the current study was to obtain an effective dose and exposure time of Etf treatment against Colletotrichum gloeosporioides in strawberry. In vitro test was conducted on colonies of C. gloeosporioides grew on PDA in petri dishes. The fungus was fumigated with Etf at various dose (0, 140, 190, 240, and 290 g m-3) and at various exposure time (1, 2, 3, and 4 hours), in 5 L plastic bags. On in vivo test, agar plugs of C. gloeosporioides (diameter 0,3 mm) were inoculated on to wounded strawberries, and the inoculated strawberries were then fumigated with Etf at similar dose and exposure time treatments. Each test was conducted in four replicates. Fumigation with Etf at 190 g m-3 significantly reduced the growth of C. gloeosporioides on agar, but did not reduce the colonization of the pathogen on strawberries. Ethyl formate did not affect visual quality of strawberries, but damaged the calyx at 190 g m-3. Other fungi, namely Colletotrichum sp. and Botrytis sp., were found on fumigated and nonfumigated strawberries. Key words: Colletotrichum gloeosporioides, ethyl formate, strawberries

Infeksi Papaya ringspot virus pada Tanaman Pepaya di Provinsi Nanggroe Aceh Darussalam Sri Hendrastuti Hidayat; Sari Nurulita; Suryo Wiyono
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Severe mosaic symptoms was observed on papaya plants in Meusa village, Kutablang sub district, Bireun district and Lambaro Teunom village, Lembah Seulawah sub district, Aceh Besar district. Systemic mosaic was found in leaves, stem, twig, and fruit. Reverse transcription-polymerase chain reaction (RT-PCR) was conducted to detect the virus causing mosaic symptoms using universal primer for Potyvirus. Amplification of 320 bp DNA fragment was successfully obtained from leaves and fruits bearing severe mosaic symptoms. Nucleotide sequencing was proceeded using the DNA amplicon as the template. Further sequence analysis indicated that Potyvirus isolates from papaya in Aceh show the highest homology (92.7% to 94.7%) with Papaya ringspot virus (PRSV) from Philippines, Thailand, and Indonesia. This is the first report on PRSV infection on papaya in Nanggroe Aceh Darussalam province. Key words: Potyvirus, RT-PCR, sequencing

Page 3 of 41 | Total Record : 407

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