Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Alternative Fungicide Spraying for the Control of Powdery Mildew Caused by Sphaerotheca fusca on Greenhouse Watermelon (Citrullus lanatus)

시설 수박 흰가루병 방제를 위한 살균제 교차방제 체계

  • Kang, Hyo-Jung (Watermelon Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Kim, Youngsang (Watermelon Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Han, Bongtae (Watermelon Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Kim, Taeil (Watermelon Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Noh, Jaegwan (Watermelon Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Kim, Yeegi (Watermelon Research Institute, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Shin, Hyeon-Dong (Division of Environmental Science and Ecological Engineering, Korea University)
  • 강효중 (충청북도농업기술원 수박연구소) ;
  • 김영상 (충청북도농업기술원 수박연구소) ;
  • 한봉태 (충청북도농업기술원 수박연구소) ;
  • 김태일 (충청북도농업기술원 수박연구소) ;
  • 노재관 (충청북도농업기술원 수박연구소) ;
  • 김이기 (충청북도농업기술원 수박연구소) ;
  • 신현동 (고려대학교 환경생태공학부)
  • Received : 2014.01.09
  • Accepted : 2014.03.11
  • Published : 2014.03.31
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Abstract

Alternative spraying was developed using fungicides and potassium phosphonate to control watermelon powdery mildew (WPM) caused by Sphaerotheca fusca under greenhouse condition. In 2010 trial, a total of 9 combinations of 6 fungicides which are legally registered in Korea and currently used on watermelon farms were tested for the control efficacy against WPM. Though the combination of chlorothalonil (Chl)-myclobutanil (My)-fenarimol (Fen)-hexaconazole (Hex) was the most effective (82.6%) in the first-year trial, it had the problem that My, Fen and Hex have the same mode of action. Therefore, in the second-year trial to improve the fungicide combination and to reduce fungicide application, fungicides and potassium phosphonate (P) combinations were tested for WPM control using 500 ppm aqueous potassium phosphonate solution which is both eco-friendly and showing different mode of action from the fungicides tested. The P-My-Fen-Hex applied at 10-day intervals provided relatively high control (75.6%), whereas Chl-My-Fen-P provided 31.8% control. To improve the control, fungicides and P were applied at 7-day intervals in the third-year trial. Though Chl-My-Fen-Hex provided the highest control (89.6%), P-My-Fen-Hex also provided relatively high control (83.5%) compared to 65.9 % control with Chl-My-Fen-P, which suggests that Chl-My-Fen-Hex could be replaced with P-My-Fen-Hex for WPM control.

우리나라 수박 재배지에서 발생하고 있는 흰가루병 방제를 위한 아인산칼륨-살균제 교차방제체계를 개발하였다. 2010년 시험에서는, 우리나라에서 수박 흰가루병 방제를 위하여 등록되어 합법적으로 사용 가능하며, 농가에서 사용중인 6종류의 살균제를 이용하여 9가지 처리조합을 구성하여 시험하였다. 그 결과 클로로탈로닐(Chl)-마이클로뷰타닐(My)-페나리몰(Fen)-헥사코나졸(Hex)의 처리가 가장 효과가 우수한 것으로 나타났으나, My, Fen, Hex의 작용 기작이 동일하다는 문제점이 있었다. 따라서 2년차 시험에서는 처리조합을 개선하고 농약사용을 줄이기 위하여 이들 살균제 외에 작용기작이 다르면서도 친환경적인 약제인 아인산칼륨을 이용하여 살균제-아인산칼륨 교차 살포 조합을 선발하기 위한 포장시험을 수행하였다. 10간격처리에서, Chl-My-Fen-P는 31.8%의 방제효과를 나타낸 반면, Chl-My-Fen-P는 75.6%의 비교적 높은 방제효과를 나타냈다. 방제효과를 개선하기 위하여 3년차 시험에서는 살균제와 아인산칼륨을 7일 간격으로 살포하였다. Chl-My-Fen-Hex가 가장 높은 89.6%의 방제효과를 나타냈으나, 65.9%의 방제효과를 나타낸Chl-My-Fen-P와 달리 P-My-Fen-Hex 또한 83.5%의 비교적 높은 방제효과를 나타냄으로써, 수박 흰가루병 방제를 위하여 Chl-My-Fen-Hex의 방제체계는 P-My-Fen-Hex로 대체할 수 있음을 시사하고 있다.

Keywords

References

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