Selection of Beneficial Microbial Agents for Control of Fungal Diseases in the Phyllosphere of Cucumber Plant

오이 지상부의 주요 곰팡이 병해의 생물적 방제용 유용미생물의 선발

  • Lee, Sang-Yeob (Agricultural Microbiology Team, National Academy of Agricultural Science (NAAS), Rural Development Administration(RDA)) ;
  • Lee, Young-Kee (Crop Protection Division, National Academy of Agricultural Science (NAAS), Rural Development Administration(RDA)) ;
  • Park, Kyung-Seok (Agricultural Microbiology Team, National Academy of Agricultural Science (NAAS), Rural Development Administration(RDA)) ;
  • Kim, Yong-Ki (Organic Agriculture Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
  • 이상엽 (농촌진흥청 국립농업과학원 농업미생물팀) ;
  • 이영기 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 박경석 (농촌진흥청 국립농업과학원 농업미생물팀) ;
  • 김용기 (농촌진흥청 국립농업과학원 유기농업과)
  • Received : 2010.11.01
  • Accepted : 2010.12.09
  • Published : 2010.12.31

Abstract

Bacillus subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 obtained from phyllosphere of cucumber plants were selected for biological control of fungal air-borne diseases. For the downy mildew, diseased area of B. subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 showed 0.5%, 20.2% and 42.0%, but that of control was 82.0% respectively, in cucumber seedling test. Incidence of powdery mildew by once application of B. subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 was 2.8%, 3.6% and 12.3%, respectively, whereas that of control was 65.6%. On the gray mold, diseased area of B. subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 was 8.0%, 30.8% and 5.2%, respectively, compared to 81.2% for the control. Therefore, B. subtilis B29 could be a prospective antagonist for biological control of powdery mildew, downy mildew and gray mold of cucumber plant.

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