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All Journal Buletin Agrohorti Jurnal Fitopatologi Indonesia Bioplante Microbiology Indonesia Jurnal Keteknikan Pertanian AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Karet JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian

Widodo Widodo

Departemen Proteksi Tanaman, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Kamper Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 2432568

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Medicine & Pharmacology

Published : 29 Documents Claim Missing Document

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Daya Hasil 15 Galur Cabai IPB dan Ketahanannya terhadap Penyakit Antraknosa yang Disebabkan oleh Colletotrichum acutatum Lia Marliyanti; Muhamad Syukur; . Widodo
Buletin Agrohorti Vol. 1 No. 1 (2013): Januari 2013
Publisher : Departemen Agronomi dan Hortikultura

This research intended to evaluate the yield of 15 IPB chili pepper lines from Plant Genetics and Breeding Division, Department of Agronomy and Horticulture, IPB, and was compared then with 5 commercial varieties. This research also intended to evaluate its resistance to anthracnose. This research was done from January until July 2011 at Bogor. The main character that evaluated was yield component and resistant to character. IPB019015, IPB110005, IPB120005, IPB009019, IPB002046, and IPB001004 had yield ability better than commercial varieties. IPB019015 had resistance to anthracnose disease better than commercial varieties.Keywords: anthracnose, chili, yield component

Pengaruh Empat Galur Bakteri Pemacu Pertumbuhan Tanaman dan Waktu Inokulasi Virus terhadap Keparahan Penyakit Daun Keriting Kuning Cabai Hari Priwiratama; Sri Hendrastuti Hidayat; Widodo .
Jurnal Fitopatologi Indonesia Vol. 8 No. 1 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Plant growth-promoting rhizobacteria (PGPR) has effectively reduced infection of pathogens. Bacillus polimixa BG25, B. subtilis SB3, Pseudomonas fluorescens PG01, P. fluorescens S32, and their combinations were used as seed treatment. Bemisia tabaci (Hemiptera: Aleyrodidae) was used to inoculate Geminivirus at 3, 5, and 6 weeks after planting. Seeds without any bacteria treatment were used as controlled plant. Treatment of PGPR and time of inoculation were significantly effect disease intensity, but not incubation period. Late infection of Geminivirus reduced disease intensity. Based on measurement of plant height, number of branch, and flowers it was concluded that some bacterial treatments was significantly effect plant growth. Key words: Bemisia tabaci, Geminivirus, PGPR, plant growth promoting rhizobacteria

Penyakit Keriting Daun Pepaya yang Disebabkan oleh Cladosporium cladosporioides Widodo .; Suryo Wiyono
Jurnal Fitopatologi Indonesia Vol. 8 No. 1 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Leaf curling and chlorotic spot on young leaves of papaya type California was observed in Bogor, Kebumen, and Bekasi. Conidium of Cladosporium cladosporioides was found associated with diseased tissue based on microscopic examination. To our knowledge, this is the first report of C. cladosporioides causing papaya leaf curling in Indonesia. Key words: chlorotic, leaf curl disease, papaya disease, scab

Laporan Pertama tentang Penyakit Busuk Arang pada Kacang Tanah Suryo Wiyono; Widodo .
Jurnal Fitopatologi Indonesia Vol. 8 No. 2 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Peanut charcoal rot disease was first observed in Bogor,West Java in June 2010, and Serang, Banten in January 2012. Infected plants in the field showed root and stem rot, discoloration of stems and/or branches. Severe infection may cause wilting of foliage then plant dried out. Based on microscopic observation Macrophomina phaseolina was constantly associated with diseased plants from those two areas. Hot temperature and low rainfall might favour disease development. This is the first report of charcoal rot disease of peanut in West Java and Banten. Key words: charcoal rot, Macrophomina phaseolina, peanut

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

Cendawan Endofit Nonpatogen Asal Tanaman Cabai dan Potensinya sebagai Agens Pemacu Pertumbuhan Evan P. Ramdan; Widodo Widodo; Efi Toding Tondok; Suryo Wiyono; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol 9 No 5 (2013)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Endophytic fungi have been reported to have mutual symbiosis with their host. This research aimed to obtain nonpathogenic isolates of endophytic fungi from roots, stems, and branches of chili pepper. Endophytic fungi were isolated on 10% malt extract agar (MEA) after serial surface sterilization of plant parts. The effect of endophytic fungi on the development of chili pepper seeds were tested by growing seeds on media containing endophytic fungi isolate. As many as 138 isolates of endophytic fungi were successfully isolated from chili pepper plants from Garut and Bogor. Based on colony morphology the isolates can be differentiated into 9 morphotypes. Among the total isolates, 13.04% are nonpathogenic. Some of them (7,25%) do not effect seedling significantly compared to control and some isolates (5.79%) caused better seedling growth than control. Endophytic fungi having the potential to promote plant growth was identified as Aspergillus sp., Fusarium sp., Penicillium sp., sterile hyphae 1, 2, and 3.

KOMUNIKASI SINGKAT: Penyakit Keriting Pada Tanaman Pepaya Di Bogor Maria Ulfa Putri Yoeshinda; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 10 No 3 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Papaya is widely grown and consumed in Indonesia as a favorite fruit. Since 2011, a new disease was reported in Bogor, i.e. leaf curl disease caused by Cladosporium cladosporioides.Therefore, a survey was conducted in Bogor to determine the status of leaf curl disease of papaya and to identify some agricultural practices that may affect disease development. Based on field observation conducted in Bogor, subdistricts Rancabungur and Sukaraja, it was evidenced that leaf curl disease has been widely spread, with disease incidence reached 87 % and 96%, respectively and disease severity in both areas reached 24–28%. Although disease severity was not different, disease incidence was generally lower in papaya field cultivating var. Caliporan (medium type fruit)or in monoculture cropping system compared to those cultivating var. Bangkok (large type fruit) or multiple cropping system. Other cultivated practices did not seem to cause significant effect on disease incidence and severity.

Pengendalian Penyakit Busuk Pangkal Batang Lada dengan Ekstrak Pinang, Gambir, Sirih, dan Kapur Sirih Dedek Kusvianti; Widodo Widodo; Djoko Prijono
Jurnal Fitopatologi Indonesia Vol 10 No 4 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Pepper is an important commodity in Indonesia due to its export value. Infection of Phytophthora capsici causing stem rot disease is very critical for the production of pepper plants. Research was conducted to evaluate the efficiency of extracts of areca, gambir, betle, and lime paste for controlling stem rot disease. In vitro and in vivo experiments was designed to evaluate 2 factors, i.e. type and concentration of extracts. In vitro experiment was conducted by growing 4 day old and 5 mm in diameter of P. capsici isolate on V8 media containing the extracts tested. In vivo experiment was done by dipping pepper leaves on the extracts, followed by dropping zoospores of P. capsici on underneath of leaf surface. Mixture of 4 extracts (areca + gambir + betel + lime paste) of 0.005% and 0.01%; and areca extract of 0.04% was able to inhibit the growth of P. capsici colonies effectively in vitro. Similarly, mixture of 4 extracts of 0.01% effectively suppressed disease severity in vivo with equal effect with those of propineb fungicide of 0.2%.

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.

Eksplorasi Fusarium Nonpatogen untuk Pengendalian Penyakit Busuk Pangkal pada Bawang Merah Umi Sallamatul Isniah; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 11 No 1 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Fusarium oxysporum f. sp. cepae causing basal rot disease is one of an important constrains in shallot productions. Result from several studies showed that non-pathogenic F. oxysporum was very potential to control fusarium basal rot in shallot. This study was conducted to explore non-pathogenic isolates of F. oxysporum from shallot fields which might be effective for controlling basal rot disease. Eighteen out of 21 isolates did not cause any disease symptom, they even promoted shallot growth when inoculated onto bulbs. Three out of 18 selected isolates, i.e. P13a, T14a, and P21a were the most effective isolates in controlling the disease in two consecutive experiments with level of efficacy ranges from 61.2% to 83.3%. This level of efficacy was higher than those of fungicide (benomyl) treatment.

Co-Authors ALI NURMANSYAH Ali Wafa Ana Feronika Cindra Irawati Andika Septiana Suryaningsih Andriani, Desta Anthoni Sulthan Harahap Asniah Asniah Bonjok Istiaji Busyairi Latiful Ashar Dedek Kusvianti devi ayu komalaningrat Dini Dinarty Dini Dinarty DJOKO PRIJONO DWI SUGIPRIHATINI Efi Toding Tondok Eryna Elfasari Rangkuti Evan P. Ramdan Fetrina Oktavia Fetrina Oktavia Firmansyah, Raden Arief Gayuh Rahayu Giyanto Giyanto Hari Priwiratama Heri Harti Hermanu Triwidodo Kikin H Mutaqin Kudang Boro Seminar Kuswanhadi Kuswanhadi Kuswanhadi Kuswanhadi Lia Marliyanti Lilih Naelun Najah Maggy Tenawidjaja Suhartono Maria Ulfa Putri Yoeshinda Mohamad Rahmad Suhartanto Muhamad Syukur Ni Putu Winda Mahasari Rahmi Sutrisni Ramdan, Evan Purnama SRI HENDRASTUTI HIDAYAT Sudarsono Sudarsono Sudarsono Sudarsono Sulastri Sulastri Supramana Suryo Wiyono Syaidatul Rosidah Titiek Siti Yuliani Umi Sallamatul Isniah Weni Wilia Yudi Sastro

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