Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Management of powdery mildew and leaf mould on tomato organically cultivated under controlled structured condition

  • Kim, Yong-Ki (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Hong, Sung-Jun (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Jee, Hyeong-Jin (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Park, Jong-Ho (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Han, Eun-Jung (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • An, Nan-Hee (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Choi, Eun-Jung (Organic Agriculture Division, National Academy of Agricultural Science, RDA) ;
  • Ryu, Kyoung-Yul (Microbial Safety Division, National Academy of Agricultural Science, RDA)
  • Published : 2011.11.30
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Abstract

Powdery mildew and leaf mold were major diseases in organic cultured tomatoes. $NaHCO_3$ and $KH_2PO_4$ were selected as control agents for controlling tomato powdery mildew. Control effect of the selected control agents was increased when they were treated with oil-egg yolk mixtures (OEYO). Also four organic materials used commercially including copper hydroxide and sulfur, showed high control effect more than 90% in green house. Also two organic matters, copper hydroxide and sulfur showed high control effect in farmer's field. When tomatoes were cultivated in plastic house installed with circulation fan, incidence of powdery mildew and leaf mold was reduced by 56% and 60%, respectively.

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