Control of Alternaria Leaf Blight of Ginseng by Microbial Agent and Fungicides

미생물 제제와 살균제에 의한 인삼 점무늬병의 방제

  • Li, Xiangguo (Division of Plant Resources, Chungnam National University) ;
  • Han, Jin-Soo (Division of Plant Resources, Chungnam National University) ;
  • Jin, Xuanji (Division of Plant Resources, Chungnam National University) ;
  • Yin, Dapeng (Division of Plant Resources, Chungnam National University) ;
  • Choi, Jae-Eul (Division of Plant Resources, Chungnam National University)
  • 이상국 (충남대학교 농업생물과학대학 식물자원학부) ;
  • 한진수 (충남대학교 농업생물과학대학 식물자원학부) ;
  • 김현길 (충남대학교 농업생물과학대학 식물자원학부) ;
  • 윤대붕 (충남대학교 농업생물과학대학 식물자원학부) ;
  • 최재을 (충남대학교 농업생물과학대학 식물자원학부)
  • Published : 2008.08.01


The single application of Bacillus subtilis QST713(BS QST713) mixed application with fungicides and alternate application were treated to examine the control of alternaria leaf blight of Panax ginseng. Control value of alternaria leaf blight by single application of BS QST713 at 10 days interval was 83.3%, and those of single application at 10 days interval was $80.4{\sim}83.7%$ by azoxystrobin, chlorothalonil copper sulfate basic, copper sulfate basic, kresoxim-methyl, difenoconazole, mancozeb. When mixture of BS QST713 and fungicides were applied at 14 days interval, the control value of alternaria leaf blight were 83.6% by BS QST713 and mancozeb, and 82.6% by BS QST713 and azoxystrobin. However, mixture of BS QST713 with difenoconazole, kresoxim-methyl, copper sulfate basic and chlorothalonil copper sulfate basic exhibited the disease control values from 61.1% to 76.4%, which showed slightly lower control efficacy. In Daejeon, the alternate application of BS QST713 followed by copper sulfate basic with 14 days interval was 85.9% in control value, which showed the best control efficacy. The alternate application with other tested fungicides slightly decreased to $55.5{\sim}78.2%$ in control value. However, the alternate application of BS QST713 followed by fungicides showed very high control efficacy, which were approximately 90% in Muju, Jeonbuk Province. Consequently, the single, mixed or alternate application of BS QST713 and fungicides could be recommended as a control method to reduce the amount of fungicides.


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