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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Research in Plant Disease
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Journal DOI :
Korean Society of Plant Pathology
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Volume & Issues
Volume 16, Issue 3 - Dec 2010
Volume 16, Issue 2 - Aug 2010
Volume 16, Issue 1 - Apr 2010
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Occurrence of Virus Diseases on Major Crops in 2009
Choi, Hong-Soo ; Lee, Su-Heon ; Kim, Mi-Kyeong ; Kwak, Hae-Ryun ; Kim, Jeong-Soo ; Cho, Jeom-Deog ; Choi, Gug-Seoun ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 1~9
DOI : 10.5423/RPD.2010.16.1.001
Among the plant specimens requested from agricultural actual places of farmers, Agency of agricultural extension services and so forth for the diagnosis of plant virus diseases in 2009, the rate of crop types was 87.5% for vegetables, 4.0% for upland crops and 3.5% for orchids. In vegetables, the crops damaged severely by viral diseases were red pepper and tomato by the infection rate of 51.6% and 26.5%, orderly. Virus species occurring vegetables were 19 and the economically important viruses were Cucumber mosaic virus (CMV), Tomato spotted wilt virus (TSWV), Tomato yellow leaf curl virus (TYLCV), Pepper mild mottle virus (PMMoV) with the infection rate of 33.2%, 16.9%, 16.1% and 7.4%, respectively. Rice stripe virus (RSV) occurred at the whole areas of west coast in Korea in 2009, and its incidence was 14.2% mainly on the susceptible cultivars and yield loss was estimated up to 50%. TYLCV was spread at 34 areas of Si and/or Gun, 22 areas in 2009 and 12 in 2008. Distribution of TSWV was expanded newly in 6 areas of Si and/or Gun including Gangryung, Gangwondo in 2009, and its occurrence areas were 23 Si and/or Gun after first incidence at Anyang area in 2004. Tomato bushy stunt virus (TBSV) was incited newly at Gimcheon area in 2009 with the infection rate of 65.2%, and its soil transmission rate was 55.0% in average.
Recent Studies on Development of Transgenic Plants Induced Root-Knot Nematode Resistance by RNA Interference Suppression of Nematode Genes and Nematode Prevention
Hahn, Bum-Soo ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 10~20
DOI : 10.5423/RPD.2010.16.1.010
Root-knot nematodes cause billions of dollars in crop losses annually have a broad range of host over 2,000 species of plants. These nematodes are known as obligate, sedentary endo-parasites in a plant host to feed upon to complete their life cycle. To prevent the plant parasitic nematode, methyl bromide was widely applied as a soil fumigant. Other strategies to prevent or control nematodes involve RNAi-mediated suppression, R gene transformation, natural products or chemical treatments, the expression of peptide or proteins in susceptible plants, and others. Over the last decade, the entry in GenBank for Meloidogyne reveals 73,340 ESTs and recently two complete Meloidogyne spp. genomes sequences have simultaneously been presented by two groups. Recent works have demonstrated the effect of RNAi suppression to nematode target genes. These results will provide novel members of genes as a foundation for studies focused on understanding the function of M. incognita nematode genes as well as for the development of novel target genes for parasite control. Thus the successful development of biotechnology-derived plants with nematode resistance will result in large yield benefits for producers as well as environmental benefits and will accelerate the research related to pathogensresistant crops.
Effects on Growth and Yield of Korean Malting Barley Cultivars by Soil-borne Bymovirus Infection
Park, Jong-Chul ; Kim, Mi-Jung ; Lee, Eun-Sook ; Park, Chul-Soo ; Kang, Chun-Sik ; Hyun, Jong-Nae ; Lee, Jung-Joon ; Kim, Tae-Soo ; Kim, Ki-Jong ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 21~26
DOI : 10.5423/RPD.2010.16.1.021
Viral diseases, especially Barley yellow mosaic virus (BaYMV) and Barley mild mosaic virus (BaMMV) have been most serious in barley fields. In this study, we investigated the effect of different level of resistance to viral diseases on the plant growth and yield in malting barley. In diagnosis of virus infection, BaYMV and BaMMV were detected in 'Doosan 29' (susceptible), however, 'Jinyangbori' (moderate susceptible) and 'Hopumbori' (moderate) was infected by only BaYMV. Plant height was restrained about 8~29% in overwintered plant regeneration stage depending on the resistant of each cultivar. The culm length damaged also to 9~12% by BaYMV infection. The tiller numbers reduced to 10~14% in overwintering season, however, the head numbers in harvest season more decreased to 26~33%. Heading date was delayed to 3~3 days by the infection. In examination of yield components, 1,000 kernel weight and
weight reduced according to culrivar's resistant degrees to 4.0~6.4% and 1.0~4.2%, respectively. The yield of abortive grain was doubled in BaYMV infection comparing to non-infested field. Three varieties tested in the non-infected field over two years were not significantly different for yield potential with ranges of 509kg~632kg/10a. However, significant yield reduction was observed in 'Saessalbori' and 'Baegdong' with ranges of 77~177kg/10a as compared to 'Hopumbori' (467 kg/10a) when tested in the virus-infected field. Yield potentials of these cultivars reduced by 26~43%, respectively, in the virus-infected field as compared to those in the non-infected field.
Formulation of Bacillus amyloliquefaciens A-2 and Its Efficacy to Control Tomato Leaf Mold Caused by Fulvia fulva
Kong, Hyun-Gi ; Chun, Ock-Joo ; Choi, Ki-Hyuck ; Lee, Kwang-Youll ; Baek, Joung-Woo ; Kim, Hyun-Ju ; Murugaiyan, Senthilkumar ; Moon, Byung-Ju ; Lee, Seon-Woo ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 27~34
DOI : 10.5423/RPD.2010.16.1.027
This study was performed to develop a formulation using an antagonistic bacterium Bacillus amyloliquefaciens A-2 to control tomato leaf mold caused by Fulvia fulva. B. amyloliquefaciens A-2 was grown in a medium with rice oil and mixed with various carrier and additives. One of the formulations, A2-MP, showed the best disease control value among the tested formulations. The disease control value of A2-MP at 100-fold and 500-fold diluted treatment was not significantly different from that of chemical fungicide triflumizole in a growth chamber. Although disease control effect was decreased by serial diluted treatment of the prepared A2-MP, 1,000-fold diluted treatment of A2-MP still showed high disease control value of 72.0%. For the green house experiments, the disease control values of A2-MP was indicated as 79.4% which is similar to that of chemical fungicide, triflumizole showing 79.6%. When the disease control activity of the formulation A2-MP was compared in tomato production conditions, disease control values of 100-fold diluted A2-MP and 3,000 fold diluted triflumizole exhibited 60%, 81.6%, respectively. The disease control efficiency by A-2MP was 73% of the disease control value of chemical fungicide. The formulation A-2MP maintained the stable bacterial viability and disease control activity when stored at
. This result suggested that A-2MP develped from B. amyloliquefaciens A-2 could be used to control tomato leaf mold.
Suppressive Effect of Bacterial Isolates from Plant Rhizosphere against Late Blight Caused by Phytophthora citrophthora on Citrus Fruits
Kang, So-Young ; Jeun, Yong-Chull ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 35~40
DOI : 10.5423/RPD.2010.16.1.035
Suppression effect of the 12 bacterial isolates from plant rhizosphere against late blight caused by Phytophthora citrophthora were investigated on citrus fruits. Among the bacterial isolates, THJ609-3, TRH423-3, BRH433-2, Lyso-chit and KRY505-3 presented disease suppression after wound inoculation with the fungal pathogen in vivo. The anti-fungal activity was evaluated by measuring the length of inhibition zone of the mycelium P. citrophthora adjacent to the effective bacterial isolates in which all of the 5 bacterial isolates showed antagonistic effects. However, there was no positive correlations between the efficacy of disease suppression and the antagonistic effect. On the other hand, Lyso-chit and KRY505-3 were identified as Bacillus cereus, BRH433-2 as B. circulans and TRH423-3 as Burkholderia gladioli, respectively, by analysis of rDNA sequence on the internal transcript spaces. It is suggested that the effective bacterial isolates may be useful for finding biological control agents against late blight especially on environment-friendly farm where the application of fungicide is limited.
Identification of the Oligotrophic Bacteria Strain 7F Biocontrolling Phytophthora Blight Disease of Red-pepper
Kim, Dong-Gwan ; Yeo, Yun-Soo ; Kwon, Soon-Wo ; Jang, Kil-Su ; Lee, Chang-Muk ; Lee, Mi-Hye ; Kim, Soo-Jin ; Koo, Bon-Sung ; Yoon, Sang-Hong ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 41~47
DOI : 10.5423/RPD.2010.16.1.041
A total of 10,753 oligotrophic bacteria were isolated from the cultivated soils of red-pepper infected by Phytophthora blight disease in various regions of Korea (Chungju, Anmyon, Taean, Andong, Eumsung and Goesan). Seven bacteria isolates among these collected resources were selected by the first screening of in vitro antagonistic assay against major several plant pathogenic fungi including Phytophthora capsici. Finally, strain 7F was selected by pot assay for a possible biological control agent against Phytophthora blight disease of pepper seedling in the greenhouse. Strain 7F was identified as Bacillus subtilis on the basis of its 16S rDNA sequence analysis and as standardized biochemical characteristics assay kits such as API20 NE. In the experiment of P. capsici zoospore infected red-pepper on the pot test, infection rate of red-pepper with nonetreatment to Phytophthora blight disease was 87%, while the rate was only 6% in the pot treated with strain 7F. This result indicated that the Bacillus subtilis strain 7F will be useful as a potential biocontrol agent for Phytophthora blight disease of red-pepper.
Reduced Sensitivities of the Pear Scab Fungus (Venturia nashicola) Collected in Ulsan and Naju to Five Ergosterol-biosynthesis-inhibiting Fungicides
Kwon, Soo-Mean ; Yeo, Moo-Ill ; Choi, Se-Hoon ; Kim, Gun-Woong ; Jun, Kyung-Jin ; Uhm, Jae-Youl ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 48~58
DOI : 10.5423/RPD.2010.16.1.048
In Korea, EBI fungicides which are highly effective for control of pear scab and rust but of high risk for development of resistance have been frequently sprayed by majority of pear growers. To detect any possible resistance or reduced sensitivity in the field strains of scab fungus to five EBIs, difenoconazole, fluquinconazole, flusilazole, fenarimole and hexaconazole, sensitivity tests were conducted with fungal specimens collected in Ulsan and Naju where scab usually occurs and EBIs have been intensively sprayed for many years. As the strains for which
values of the EBIs were largely shifted from those of base-line were occasionally found, the resistant or less sensitive strains were supposed to be distributed. In the activity test for the EBIs by artificial inoculation, in which EBI-treated pear leaves on the potted seedlings were inoculated with fungal spores collected in the two regions, development of resistances to EBIs were confirmed. Since the fungal spores collected at 4 and 2 orchards in Naju and Ulsan, respectively, produced much higher disease incidence on the leaves treated with hexaconazole than those on the untreated control, those fungal specimens were determined as resistant to hexaconazole. Similar results were also obtained with two specimens from Ulsan for flusilazole.
Screening of Resistant Chinese Cabbage Cultivar against Clubroot (Plasmodiophora brassicae) for Cultivation in Highland
Yoon, Cheol-Soo ; Jung, Eun-Kyoung ; Lee, Sang-Jun ; Zhang, Yan ; Lee, Jae-Eun ; Kim, Byung-Sup ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 59~65
DOI : 10.5423/RPD.2010.16.1.059
This study was conducted to select the cultivars and strains which are suitable in cultivation of the Chinese cabbage having good horticultural characteristics and the resistance to clubroot caused by Plasmodiophora brassicae, which is a widespread disease that causes serious problems in many Brassica growing areas. Thirty four cultivars and nineteen strains of the Chinese cabbage were planted in the contaminated fields in highland and investigated the wilting symptom due to the initial disease occurrence and high temperature. Disease occurrence rate and severity of clubroot and the horticultural characteristics were also examined. According to the results, Bulamplus, Kangryeokyeoleumbaechu among cultivars of Chinese cabbage, SP-05, SP-02, CR DB 50, and CR DB 29 among strains of Chinese cabbage were resistant to hot weather by showing delayed above-ground symptom (wilting) of clubroot in 30 days after transplanting. In case of below-ground clubroot rate, Daetong, super CR Kimi 85 and super CR Hiroki among the cultivars of Chinese cabbage were resistant to clubroot in 60 days after transplanting. When fresh weight of Chinese cabbage among cultivars were compared, super CR Hiroki of over 2,500 g was the highest among other cultivars. Although the resistant and susceptible reactions of Chinese cabbage cultivars and strains against clubroot disease were somewhat different from the above-ground symptoms (wilting) of clubroot in 30 days and below-ground symptoms of clubroot in 60 days, we recommend that super CR Hiroki, CR Kimi 85, CR Janggun among cultivars of Chinese cabbage and CR DB 50 and CR DB 29 among strains of Chinese cabbage will be more suitable in cultivation of Chinese cabbage in highland.
Evaluation of Anthracnose Forecaster of an Integrated Pest Management System on Hot Pepper in the Fields
Kim, Sung-Taek ; Ahn, Mun-Il ; Yun, Sung-Chul ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 66~73
DOI : 10.5423/RPD.2010.16.1.066
Field trials were conducted in Suwon, Andong, Bongwha and Taean to evaluate an anthracnose forecaster in the integrated pest management system (IPM) including anthracnose, Phytophthora blight and tobacco budworm for hot pepper in 2008-2009. Percentage of diseased fruits by pepper anthracnose and yield were compared among three treatments, no-fungicide, forecaster and conventional. The incidence and yield of the forecaster at Bongwha on two varieties were 3.1-3.5% and 30-33 kg/40 plants. These were little less than those of the conventional's 0.3-0.8% and 35-36 kg/40 plants and much higher than those of the no-fungicide's 23-27% and 18-24 kg/40 plants. The number of spray at the forecaster was 5 times, whereas those at the conventional was 11-19 times depending on the farmers. In addition, the results of an anthracnose forecaster at the other three field trials allowed in protecting hot pepper from anthracnose while reducing the amount of pesticides used and the total cost of the pathogen control. However, it is needed to improve for anthracnose forecaster when anthracnose pressure was high such as Taean where 60-80% of the incidence. Because the control values of the forecaster at Taean were between those of no-pesticide and conventional treatment at best. If anthracnose is severe early in the season, additional preventive control should be considered when the fruits were fully grown yet.
Emulsification Characters of COY (Cooking Oil and Egg Yolk Mixture) and Mixing Application with Sulfur Wettable Powder for Enhancing the Control Efficacies against Paprika Powdery Mildew
Lee, Jung-Han ; Han, Ki-Soo ; Bae, Dong-Won ; Kwon, Young-Sang ; Kim, Dong-Kil ; Kang, Kyu-Young ; Kim, Hee-Kyu ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 74~80
DOI : 10.5423/RPD.2010.16.1.074
Emulsification characters were investigated for COY (Cooking oil and Egg Yolk Mixture) and control efficacies of COY was enhanced by supplemented Sulfur wp. against paprika powdery mildews. Amount of water added to one egg yolk and 100 ml olive oil affected tbe homogenization of mixtures to emulsion profoundly; those premixes with 5~10 ml water were too concentrated to be homogenized, hence not dispersible in water; those with 15~20 ml water were homogenized, but tended to flocculation and not readily dispersible in water, suggesting the instability of emulsion; and those with 50 or 100 ml water were homogenized well and was readily dispersible in water to stable emulsion over long period of time. It was further confirmed that those fruits sprayed with not-fully emulsified COY revealed the oily membranes or blotches on their surfaces, whereas the ones with fully emulsified COY revealed normal clean surfaces. Treatment of COY either alone or in supplementation with Sulfur wettable powder (sulfur wp) were also effective in suppressing the recurrence of powdery mildew signs, wbich had disappeared in three days of foliar application. Still, the COYs supplemented with sulfur wp (COY+sulfur wp) at 1,000x or 5,000x were significantly effective in suppression against the symptomlsign recurrence over COY or sulfur wp alone.
Effects of Acid Treatments on Chlorophyll, Carotenoid and Anthocyanin Contents in Arabidopsis
Im, Kyung-Hoan ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 81~85
DOI : 10.5423/RPD.2010.16.1.081
Arabidopsis seedlings subjected to low pH stress in the range of pH 5.6-4.0 did not show significant retardations in root and shoot growths. Treatment of pH 3.5-2.5 resulted in significant reductions in root and shoot length, especially in roots. Chlorophyll contents in seedlings increased during acid treatment of pH 5.6-4.0, but decreased by stronger acid treatment of pH 4.0 and lower pHs. Total carotenoid contents showed similar trend to chlorophyll contents by increasing during pH 5.6-3.5 treatments and decreasing by pH 3.0-2.5. Anthocyanin contents increased under acid stress of pH 5.6-3.0 and showed great reduction at pH 2.5. The ratios of carotenoids/chlorophylls and anthocyanins/chlorophylls increased by acid stress treatments. That indicates plants try to adjust physiologically to acid stress and protect chlorophylls by increasing carotenoid and anthocyanin contents. However, different responses of chlorophylls and anthocyanins to acid stress indicate both pigments play different roles in protecting plant from acid stress.
Brown Leaf Spot of Doonggulle (Polygonatum odoratum) Caused by Phyllosticta cruenta
Kwon, Jin-Hyeuk ; Jin, Young-Min ; Shim, Chang-Ki ; Phuong Chi, Tran Thi ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 86~89
DOI : 10.5423/RPD.2010.16.1.086
Brown leaf spot caused by Phyllosticta cruenta from 2007 to 2009 occurred severely in an herbs exhibition on Doonggulle (Polygonatum odoratum) at Gangju pond in Jeongchon-myon, Jinju city, Gyeongnam province, Korea. The typical symptoms of this disease were appeared on the brown leaf spot of leaves. Lesions on the leaves were appeared elliptical or irregular with 2~8 mm in size. Infected leaves were wilted, blighted and eventually died. Pycnidiospores and pycnidia of the fungus were abundantly formed on PDA. The optimum temperature for mycelial growth was
. Pycnidiospores were not readily formed on PDA, colorless in color, globose~subglobose in shape,
in size and appendage hanged
in size. Pycnidia were globose~subglobose in shape, dark brown in color and
in size. On the basis of mycological characteristics and pathogenicity test on host plants, the fungus was identified as Phyllosticta cruenta (Kunze: Fries) Kickx. This is the first report on the brown leaf spot of Doonggulle caused by P. cruenta in Korea.
Sclerotinia Rot of Astragalus sinicus Caused by Sclerotinia trifoliorum
Kwon, Jin-Hyeuk ; Lee, Heung-Su ; Lee, Yong-Hwan ; Shim, Hong-Sik ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 90~93
DOI : 10.5423/RPD.2010.16.1.090
Sclerotinia rot occurred sporadically on the stems and leaves of Astragalus sinicus in the farmers fields at Goseong-gun, Gyeongnam province in Korea. The infected plants showed the typical symptoms: watersoaked, wilt, rot, blight and eventual death. The colony of the isolated fungus on potato-dextrose agar (PDA) was white to faintly gray color. Sclerotia formed on the PDA were globose in shape, black in color and
in size. The optimum temperature for mycelial growth and sclerotium formation was at
on PDA. Apothecia formed on PDA were globose~disk in shape and 3~8 mm in size. Asci were cylindrical in shape and
in size. Ascospores were ellipsoid and
in size. On the basis of mycological characteristics and pathogenicity test on host plants, the fungus was identified as Sclerotinia trifoliorum Eriksson. This is the first report on sclerotinia rot of A. sinicus caused by Strifoliorum Eriksson in Korea.
Occurrence of Leptosphaerulina Leaf Blight on Kentucky Bluegrass Caused by Leptosphaerulina trifolii
Kim, Jeong-Ho ; Shim, Gyu-Yul ; Kim, Young-Ho ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 94~96
DOI : 10.5423/RPD.2010.16.1.094
In May of 2004 through 2007, Leptosphaerulina leaf blight caused by Leptosphaerulina trifolii occurred on Kentucky bluegrass (Poa pratensis) at golf courses in Gangwon Province, Korea. Symptoms on the turfgrass caused by L. trifolii were leaf blights, dying from the leaf tip downwards to the crown, which appeared patches in the field because of local pockets of severely infected (blighted) grass. Perithecia were produced on old or weak leaves, including club-shaped asci, each of which contained 8 pale brown muriform ascospores with cross and longitudinal septa. Ascospores of the fungus isolated from the diseased leaf tissue and cultured on potato-dextrose agar (PDA) were muriform multicellular (composed of 3-6 cells) and
in size with 3-4 transverse and 0-3 longitudinal septa, which were morphologically identical to L. trifolii reported previously. DNA sequences of ribosomal RNA gene (internal transcribed spacer) of the fungus were homologous with similarity of 99% to those of L. trifolii isolates in GenBank database, confirming the identity of the causal agent of the disease. Pathogenicity of the fungus was also confirmed on the creeping bentgrass by Koch's postulates. This is first report of Leptosphaerulina leaf blight on turfgrass caused by L. trifolii in Korea.
Angular Leaf Spot of Strawberry Caused by Xanthomonas fragariae
Kwon, Jin-Hyeuk ; Yoon, Hae-Suk ; Kim, Jeong-Soon ; Shim, Chang-Ki ; Nam, Myeong-Hyeon ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 97~100
DOI : 10.5423/RPD.2010.16.1.097
Angular leaf spot of strawberry caused by Xanthomonas fragariae occurred sporadically in the farmers open field at Sugok-myon, Jinju city, and greenhouse at Okjong-myon, Hadong-gun, Gyeongnam province, Korea. Typical symptoms of angular leaf spot initially appeared as a minute, water-soaked, rotted lesion on the lower leaf surface and the minute spots expanded to form angular leaf spots, usually delimited by small veins. The lesion was translucent under the transmitted light and dark green under reflected light. The slow growing pathogen was a gram-negative, motile bacterium with single polar flagellum, and producing yellowish orange pigment on YDC medium. It showed very strong pathogenicity on the leaves of strawberry. On the basis of biological characteristics and pathogenicity test on host plants, the bacteria was identified as a Xanthomonas fragariae. This is the first report on angular leaf spot of strawberry caused by X. fragariae in Korea.
Conidial Disperse of the Pepper Anthracnose Fungus Colletotrichum acutatum and Its Density on Infected Fruits
Jee, Hyeong-Jin ; Shin, Shun-Shan ; Lee, Ji-Hyun ; Kim, Won-Il ; Hong, Sung-Jun ; Kim, Yong-Ki ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 101~105
DOI : 10.5423/RPD.2010.16.1.101
This study was aimed to understand conidial disperse of the pepper anthracnose fungus Colletotrichum acutatum, elapse time for the disease development, and inoculum potentials on infected fruits. Most (99.2%) conidia of the fungus disseminated from inoculum source on the rainy day, while only 0.8% conidia dispersed on the sunny day. Among the conidia 93.3% were caught under 60 cm height at 30 cm distance; however, conidia were detected at 120 cm height at the distance. Relatively susceptible pepper fruits to anthracnose showed first visible symptoms at 4 days after infection under a mimic field condition. However, it seemed that over 10 days are required for the disease to develop on moderately resistant pepper fruits under unfavorable conditions. The number of conidia formed on a lesion was positively correlated with the lesion size (
). Over 10 millions of conidia were formed at a normal lesion size 1.5 cm in length. In some large coalesced lesions ca. 4cm in length produced over 100 millions of the fungal conidia. Results further confirmed that the rainfall is the key factor for the inoculum disperse of the pepper anthracnose pathogen, Colletotrichum acutatum, and a long distance dissemination is plausible according to rain and wind intensity. Consequently, rain-proof structures are ideal to avoid the disease, and removal of infected fruits and timely chemical spray are indispensible to reduce the inoculum potential in the field.
Effect of Polyvinyl Tunnel after Mulching on the Occurrence of Phytophthora Blight and Anthracnose of Red Pepper
Cheong, Seong-Soo ; Kim, Ju-Hee ; Choi, Dong-Chil ;
Research in Plant Disease, volume 16, issue 1, 2010, Pages 106~108
DOI : 10.5423/RPD.2010.16.1.106
This survey was conducted to investigate effect of covering with polyvinyl (
) on incidence of Phytophthora blight and anthracnose and growth. Early growth of pepper plant was superior when was covered with polyvinyl after planting. Incidence of anthracnose and Phytophthora blight was lower 26.9% and 60.3% in covering system than those in conventional culture system, respectively. A yield of dried red pepper was more 48.5% in cultured with covering system than that in conventional culture system.