Fungicide Screening for Control of Summer Spinach Damping-off Caused by Rhizoctonia solani

Rhizoctonia solani에 의한 여름 시금치 잘록병의 방제를 위한 살균제 선발

  • Kim, Byung-Sup (Department of Applied Plant Science, Kangnung National University) ;
  • Yun, Yue-Sun (Department of Applied Plant Science, Kangnung National University) ;
  • Yun, Choel-Soo (Department of Applied Plant Science, Kangnung National University) ;
  • Zhang, Xuan-Zhe (Department of Applied Plant Science, Kangnung National University) ;
  • Yeoung, Young-Rog (Department of Applied Plant Science, Kangnung National University) ;
  • Hong, Sae-Jin (Department of Applied Plant Science, Kangnung National University)
  • 김병섭 (강릉대학교 식물응용과학과) ;
  • 윤여순 (강릉대학교 식물응용과학과) ;
  • 윤철수 (강릉대학교 식물응용과학과) ;
  • 장현철 (강릉대학교 식물응용과학과) ;
  • 용영록 (강릉대학교 식물응용과학과) ;
  • 홍세진 (강릉대학교 식물응용과학과)
  • Published : 2005.03.31

Abstract

Damping-off of summer spinach caused by Rhizoctonia solani AG-4 has become a very important disease. For the control of summer spinach damping-off, antifungal activity of thirteen fungicides (pencycuron, trifloxystrobin, pyraclostrobin, azoxystrobin, kresoxim-methyl, validamycin, fluazinam, Benlate-T, flutolanil, cyazofamid, hexaconazole, tebuconazole, prochloraz) were evaluated in vitro and in vivo. Pencycuron, pyraclostrobin, validamycin, fluazinam, Benlate-T, hexaconazole, tebuconazole, and flutolanil significantly suppressed the mycelial growth of the pathogenic fungus. However, trifloxystrobin, azoxystrobia kresoxim-methyl, cyazofamid, and prochloraz did not represent good inhibition on the growth of R. solani. When applied by soil drenching (2,000 mg/L), pencycuron, pyraclostrobin, validamycin, fluazinam, Benlate-T, and flutolanil provided spinach survival ratios of 97.8%, 84.4%, 93.3%, 95.6%, 91.1%, and 86.7%, respectively. Also when treated in seed at 2,000 ing/L, pencycuron and pyraclostrobin displayed survival ratios of more than 85.1%.

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