Ecological Studies on Rice Sheath Blight Caused by Rhizoctonia solani III. Cultural Method and Disease Development

벼잎집무늬마름병(病)의 생태학적연구(生態學的硏究) III. 경종적방법(耕種的方法)과 발병(發病)

  • Kim, Chang-Kyu (Dept. of Plant Pathology, Institute of Agricultural Sciences) ;
  • Ra, Dong-Soo (Dept. of Plant Pathology, Institute of Agricultural Sciences) ;
  • Min, Hong-Sik (Dept. of Plant Pathology, Institute of Agricultural Sciences)
  • 김장규 (농업기술연구소 병리과) ;
  • 나동수 (농업기술연구소 병리과) ;
  • 민홍식 (농업기술연구소 병리과)
  • Published : 1985.04.30

Abstract

Transplanting date, planting space and nitrogen level were evaluated for disease development of rice sheath blight using two rice cultivars, Jinheung and Yushin. Sheath blight disease was more severe in early transplanting plot (May 16), narrow planting space($27{\times}12cm$) and high nitrogen level (220kg/ha for Jinheung and 300kg/ha for Yushin) conditions than in May 26 transplanting plot, wide planting space ($27{\times}15cm$) and standard nitrogen level (110kg/ha and l50kg/ha). At the same time, cultural conditions favorable for disease development during growth stage resulted in greater damage at maturing stage.

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