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

포도 캠벨얼리의 무가온 하우스재배시 지역별 갈색무늬병 발생차이

  • 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)
  • 정성민 (국립원예특작과학원 원예작물부 과수과) ;
  • 박종한 (국립원예특작과학원 원예환경과) ;
  • 박서준 (국립원예특작과학원 원예작물부 과수과) ;
  • 이한찬 (국립원예특작과학원 원예작물부 과수과) ;
  • 이재욱 (국립원예특작과학원 원예작물부 과수과) ;
  • 류명상 (국립원예특작과학원 원예작물부 과수과)
  • Published : 2009.12.01

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.

포도갈색무늬병은 주로 포도 캠벨얼리에서 6월 상순에 발생이 시작하여 장마철을 지나면서 급속히 전파되는 중요한 병중 하나이다. Pseudocercospora vitis에 의해 발생되는 갈색무늬병의 발생소장을 김제, 김천에 소재한 무가온 하우스에서 2007년에 조사하였다. 병의 발생율은 노지, 무가온 하우스에 따라 매우 다르게 나타났고 지역간의 차이는 나타나지 않았다. 무가온 하우스내의 온도와 상대습도와 같은 미기상요인을 대상으로 갈색무늬병 이 병엽률과의 연관성을 SAS의 PROC REG방법을 사용하여 통계분석 하였다. 그 결과 미기상 요인과 병발생간에 Y(Infected leaves)=-7.0101+0.0496$\times$20Hcum+0.0208$\times$20cum-0.2781$\times$25Hcum ($R^2=0.95^{**}$)과 같은 회귀식이 도출되었고 이는 특정 이상 온도 및 시간의 누적값이 무가온하우스 작형에서 Pseudocercospora vitis에 의한 포도 갈색무늬병에 있어 중요인자임을 보여준다.

Keywords

References

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