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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 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 Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Medicine & Pharmacology

Published : 33 Documents Claim Missing Document

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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.

Deteksi dan Identifikasi Cendawan Terbawa Benih Brassicaceae Anthoni Sulthan Harahap; Titiek Siti Yuliani; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 11 No 3 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Seed quality is very critical in agricultural production, especially to gain high yield and reduce disease problems in the field. New diseases or pathogens is potentially entering a country through seed movement by import activity. This study aimed to detect and identify seed-borne fungi from Brassicaceae seeds imported from the United States and Malaysia. Seeds were incubated on 5 sheets of wet blotting paper at a temperature of 27–30 °C for 14 days following surface sterilization. Each fungus that grows on the seed was isolated on potato dextrose agar and malt extract agar for further morphological identification. The three fungi most commonly found either on the seed with or without surface-sterilization were Aspergillus flavus, Curvularia lunata and A. niger. All of the fungi were a potential pathogen in the family Brassicaceae seeds and seedlings. Important pathogen in Brassicaceae crops, i.e. Phoma lingam was also found in small amounts and only on white pak choy seeds.

Pengendalian Colletotrichum spp. Terbawa Benih Cabai dengan Paparan Gelombang Mikro Lilih Naelun Najah; Mohamad Rahmad Suhartanto; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 12 No 4 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Seed treatment using microwave has been reported as an effective and efficient method to control seed borne pathogens of chili pepper. The purpose of this research was to evaluate the effectiveness of microwave irradiation treatment to suppress seedborne Colletotrichum spp. while maintaining physiological quality of chili’s seed. First experiment was aimed to select the best condition for seed germination, and was done in completely randomized design with three levels of water content (4.31%, 6.33%, and 8.25%). The second experiment was aimed to determine the best condition for disease suppression, and was done in completely randomized design with different levels of microwave irradiation duration (0, 10, 20, 30, 40, and 50 seconds) using the best seed water content level from the first experiment. Application of systemic fungicide with benomyl as active ingredient (0.5 g L-1) was done as check treatment. Four major species of Colletotrichum was found from chili’s seed, i.e. C. acutatum, C. capsici, C. gloeosporioides, and Colletotrichum sp. with C. acutatum as the predominant species. The best water content level for microwave treatment was 4.31%. The most effective treatment was microwave irradiation duration for 40 seconds with efficacy rate of 64.5% for controlling seedborne C. acutatum on chili pepper.

Cendawan Endofit yang Potensial Meningkatkan Ketahanan Cabai Merah terhadap Penyakit Layu Bakteri Ana Feronika Cindra Irawati; Yudi Sastro; Sulastri Sulastri; Maggy Tenawidjaja Suhartono; Kikin Hamzah Mutaqin; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 12 No 4 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Ralstonia solanacearum has been known to cause bacterial wilt disease on chili pepper. Despite many reports on the potential use of endophytic fungi to induce plant resistance, its utilization to suppress bacterial wilt disease of chili has not been widely reported. The aims of this research was to screen potential endophytic fungi that may increase chili resistance against bacterial wilt disease. Selection of endophytic fungi was done using in vivo and antibiosis test. Strains of fungi were considered the most potent in suppressing the development of bacterial wilt in chilli were identified. Ten out of 62 isolates of endophytic fungi gave the highest suppression on chilli’s bacterial wilt disease. Most strains of endophytic fungi were able to suppress the development of bacterial wilt disease, but not always positively correlated to the vegetative and generative growth of chilli. Based on the level of disease intensity and the growth of plants were obtained three strains of endophytic fungi that considered potentially suppress the incidence of bacterial wilt disease. The three isolates was identified as Fusarium solani f.sp. phaseoli (AC-2.13 and AC-4.4) and Trichoderma asperellum (AC-3.18) using morphology and molecular characters. Although all three selected isolates were able to suppress bacterial wilt disease in this study, but application of F. solani f.sp. phaseoli should be considered in practical use since it is generally known as the causal agent of root rot disease of beans

Sensitivitas Colletotrichum spp. pada Cabai terhadap Benomil, Klorotalonil, Mankozeb, dan Propineb Desta Andriani; Suryo Wiyono; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol 13 No 4 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Anthracnose caused by several species of Colletotrichum is one of limiting factors for chilli production. Up to now the control of antrachnose disease still rely on regular and intensive application of synthetic fungicides. Application of similar active ingredients of synthetic fungicides may create resistance of the pathogens. This study was conducted to evaluate the sensitivity of three species of Colletotrichum against four commercial fungicides with different active ingredients, i.e. benomyl, chlorotalonil, mancozeb, and propineb. The sensitivity level and the potential occurrence of resistance of Colletotrichum were observed based on relative inhibition rate using poisoning food method. The results showed that all isolates were highly resistant to chlorotalonil, even up to ten times of the highest recommended concentrations. The tested fungal isolates were resistant or highly resistant to the recommended concentrations of mancozeb and propineb, but they were still sensitive when the concentrations were increased up to five times. Isolates of Colletotrichum spp. showed sensitive to highly sensitive response to benomyl.

Potensi Cendawan Endofit sebagai Pengendali Hayati Penyakit Busuk Pangkal Batang (Phytophthora capsici) pada Bibit Cabai Evan Purnama Ramdan; Efi Toding Tondok; Suryo Wiyono; Sri Hendrastuti Hidayat; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol. 13 No. 5 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Stem rot disease caused by Phytophthora capsici is an important disease on chilli. Eight endophytic fungi that had been isolated and screened based on pathogenecity test were further tested for their potential as the biological control agent of the stem rot disease of chilli. The endophytic fungi suspension was applied twice during the trial. The first application was on 100 seed lot, by soaking them in 100 mL of suspension. The second application was on the 3 weeks-old chili seedlings by drenching them with 10 mL suspension per plant. The concentration of endophytic fungi in the suspension was 2.8 × 106 cfu mL-1. The disease intensity and AUDPC value were measured for 4 weeks after the pathogen inoculation. The growth inhibition test of P. capsici was performed in vitro and the colonization abilities of endophytic fungi were observed at 4 weeks-old chilli seedlings. Eight endophytic fungi inhibited the growth of the P. capsici, and two of those isolates namely Penicillium strain MAG1 and Penicillium strain PAB2 showed antibiosis mechanism. Endophytic fungi has the ability more to colonize at the root (26–60%) than in the stem (20–40%). Fusarium strain MAGR1 has the highest level of endophytic colonization i.e. 60% compared to others. Based on in vivo assay, six endophytic fungi isolates, i.e. Fusarium strain MAGR1, Penicillium strain MAG1, Penicillium strain PAB2, sterile hyphae HAJ1, sterile hyphae HAJ2, and sterile hyphae PBG7, showed the potency to control stem rot disease with inhibition level of 25.5–35.5%

Identifikasi Colletotrichum spp. Asal Tanaman Pepaya Eryna Elfasari Rangkuti; Suryo Wiyono; Widodo Widodo
Jurnal Fitopatologi Indonesia Vol. 13 No. 5 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Colletotrichum spp. is known as the causal agent of anthracnose and considered as an important limiting factors on papaya production. The objective of this study was to determine the species of Colletotrichum spp. from various plant parts of papaya (Carica papaya) showing anthracnose symptom. Twenty isolates of Colletotrichum spp. was isolated and were grouped into 3 morphological groups based on colony similarity, conidial morphology, and setae formation. A total of 12 isolates of group I and 3 isolates of group II were identified morphologically as C. gloeosporioides sensu lato based on cylindrical conidia with rounded on both ends and colony morphology. Meanwhile, 1 isolate of group II was molecularly identified as C. magnum. Four isolates of group III with a curved and pointed-end conidia, and produced setae on artificial medium were identified molecularly as C. truncatum. C. gloeosporioides was obtained on stem, leaf petiole, and fruit. C. magnum and C. truncatum were only obtained on leaf petiole and fruit, respectively. In addition to morphological and molecular characters, differences in colony growth responses to temperature can be used to distinguish the species of Colletotrichum. To our knowledge the existence of anthracnose symptom on the stems and leaf petioles of papaya in the fields and the discovery of C. magnum and C. truncatum isolated from papaya was the first report in Indonesia.

Co-Authors ALI NURMANSYAH Ali Wafa Ana Feronika Cindra Irawati Andika Septiana Suryaningsih Andriani, Desta Anthoni Sulthan Harahap Asniah Asniah Azis Rifianto 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 Maggy Thenawidjaja Suhartono Maria Ulfa Putri Yoeshinda Meity Suradji Sinaga Mohamad Rahmad Suhartanto Muhamad Syukur Ni Putu Winda Mahasari Nura , Nurul Khumaida Rahmi Sutrisni Ramdan, Evan Purnama Siti Hapshoh SRI HENDRASTUTI HIDAYAT Sudarsono Sudarsono Sudarsono Sudarsono Sulastri Sulastri Supramana Suryo Wiyono Syaidatul Rosidah Titiek Siti Yuliani Trikoesoemaningtyas Umi Sallamatul Isniah Weni Wilia Yudi Sastro Yudiwanti Wahyu E. Kusumo

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