식물병연구 (Research in Plant Disease)

한국식물병리학회 (The Korean Society of Plant Pathology)
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몇 종류 살균제의 대추 탄저병균에 대한 방제효과 및 살균제 저항성 모니터링

Control Effects of Several Fungicides on Jujube Anthracnose and Fungicide Resistance Monitoring

  • 이경희 (충북농업기술원 대추연구소) ;
  • 최지영 (충북대학교 농업생명환경대학 식물의학과) ;
  • 박수빈 (충북대학교 농업생명환경대학 식물의학과) ;
  • 김흥태 (충북대학교 농업생명환경대학 식물의학과)
  • Lee, Kyeong Hee (Jujube Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Choi, Jiyoung (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Park, Subin (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Kim, Heung Tae (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University)
  • 투고 : 2019.12.08
  • 심사 : 2019.12.17
  • 발행 : 2019.12.31
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초록

작용기작이 다른 6종의 살균제를 선발하여 대추탄저병균에 대한 억제효과와 포장에서 대추 탄저병에 대한 방제효과를 조사하였다. 균사생장과 포자발아에 대한 억제효과가 우수하였던 fluazinam은 포장에서 대추 탄저병에 대한 방제효과도 우수하였다. 병원균의 균사생장에 대한 EC50값이 0.2-0.9 ㎍/ml와 0.4-1.1 ㎍/ml이었던 metconazole과 tebuconazole의 50.0 ㎍/ml에서 포자발아에 대한 억제효과는 7.4%와 11.1%로 매우 저조하였으나, 포장에서 병 방제효과는 80.5%와 77.0%로 나타났다. 배지 상에서 병원균의 균사생장에 대한 억제효과는 낮았지만, 포자발아 효과는 우수했던 보호살균제 mancozeb와 folpet은 포장에서 대추 탄저병에 대한 병 방제 효과가 87.6%와 92.0%로 우수하였다. 포장 분리 대추탄저병균 집단을 가지고 실시한 저항성 모니터링 결과, benzimidazole계에 속하는 carbendazim에 대한 저항성균은 이미 포장에서 발생하고 있으나, 나머지 pyraclostrobin, fluazinam, tebuconazole 등에 대해서는 저항성균의 발생이 없는 것으로 판단되었다. 하지만 pyraclostrobin에 대한 병원균 집단의 resistance factor 값이 160.4로 높은 것을 보면, 집단 내에서 살균제에 대한 반응의 다양성이 높은 것을 알 수 있기 때문에, 저항성 관리에 더 주의하여야 할 것으로 생각한다.

Among 6 fungicides, fluazinam, which had an excellent inhibitory effect on mycelial growth and spore germination, was also effective in controlling jujube anthracnose in the field. While EC50 values of metconazole and tebuconazole ranged from 0.2 to 0.9 ㎍/ml and from 0.4 to 1.1 ㎍/ml against the mycelial growth, respectively, each inhibitory effect on spore germination was low by 7.4% and 11.1% at 50.0 ㎍/ml. In the field test, they showed the control value of 80.5% and 77.0%, respectively. The protective fungicides, as mancozeb and folpet, which had a low inhibitory effect on the mycelial growth, but had a high inhibitory effect of spore germination, showed excellent disease control activities by 87.6% and 92.0% in the field. Showing a result of resistance monitoring conducted with the isolates of Colletotricum gloeosporioides, the resistance against carbendazim was already generated in the field, but it was thought that there was no resistance to pyraclostrobin, fluazinam and tebuconazole. However, if the resistance factor value of the population of C. gloeosporioides isolates to pyraclostrobin was high by 160.4, the diversity of the response to the fungicide in the population was high, so it should be taken more attention to the resistance management.

키워드

참고문헌

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