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http://dx.doi.org/10.5423/RPD.2009.15.3.193

Regional Differences of Leaf Spot Disease on Grapevine cv. 'Campbell Early' Caused by Pseudocercospora vitis in Plastic Green House  

Jung, Sung-Min (Fruit Research Division, National Institute of Horticultural & Herbal Science, RDA)
Park, Jong-Han (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, RDA)
Park, Seo-Jun (Fruit Research Division, National Institute of Horticultural & Herbal Science, RDA)
Lee, Han-Chan (Fruit Research Division, National Institute of Horticultural & Herbal Science, RDA)
Lee, Jae-Wook (Fruit Research Division, National Institute of Horticultural & Herbal Science, RDA)
Ryu, Myung-Sang (Fruit Research Division, National Institute of Horticultural & Herbal Science, RDA)
Publication Information
Research in Plant Disease / v.15, no.3, 2009 , pp. 193-197 More about this Journal
Abstract
Pseudocercospora leaf spot was major disease of grape cultivar 'Campbell Early' in Korea. Leaf spot first appeared in early June and rapidly dispersed to other leaves through rainy season. Disease progress of leaf spot by Pseudocercospora vitis in plastic green house, in the two provinces (Gimje and Gimcheon), were investigated in 2007. Differences of Infected leaves (%) between cultivation systems were observed in field and plastic green house, but there was no difference between provinces. Micro environmental factors, such as temperature and relative humidity, were correlated with infected leaves by PROC REG procedure of SAS (Statistical Analysis System). As a result, regression model best described ($R^2=0.95^{**}$) the infected leaves as a function of the interaction of cumulated temperatures; Y (Infected leaves)=-7.0101+0.0496$\times$20Hcum (Cumulated hour above 20 degree)+0.0208$\times$20cum (Cumulated temperature above 20 degree)-0.2781$\times$25Hcum (Cumulated hour above 25 degree). A statistics model was shown that cumulated hour and temperature above specific degree were critical factor for Pseudocercospora leaf spot on the grapevine leaves in plastic green house.
Keywords
Grapevine; Leap spot; Microclimate factors; Pseudocercospora vitis;
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Times Cited By KSCI : 4  (Citation Analysis)
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