Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Dipping Strawberry Plants in Fungicides before Planting to Control Anthracnose

딸기 탄저병 방제를 위한 정식 전 살균제 침지처리 효과

  • Nam, Myeong Hyeon (Nonsan Strawberry Experiment Station, Chungnam ARES) ;
  • Lee, In Ha (Nonsan Strawberry Experiment Station, Chungnam ARES) ;
  • Kim, Hong Gi (Department of Applied Biology, Chungnam National University)
  • 남명현 (충남농업기술원 논산딸기시험장) ;
  • 이인하 (충남농업기술원 논산딸기시험장) ;
  • 김홍기 (충남대학교 응용생물학과)
  • Received : 2014.01.09
  • Accepted : 2014.03.10
  • Published : 2014.03.31
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Abstract

Anthracnose crown rot (ACR), caused by Colletotrichum fructicola, is a serious disease of strawberry in Korea. The primary inoculums of ACR were symptomless strawberry plants, plant debris, and other host plants. To effectively control anthracnose in symptomless transplanted strawberries, it is necessary to use disease-free plants, detect the disease early, and apply a fungicide. Therefore, in 2010 and 2011, we evaluated the efficacy of pre-plant fungicide dips by using strawberry transplants infected by C. fructicola for the control of anthracnose. Dipping plants in prochloraz-Mn for 10 min before planting was most effective for controlling anthracnose in symptomless strawberry plants and resulted in more than 76% control efficacy. Azoxystrobin showed a control efficacy of over 40%, but plants treated with pyraclostrobin, mancozeb and iminoctadine tris showed high disease severity. The control efficacy of the dip treatment with prochloraz-Mn did not differ with temperature and time. Treatment with prochloraz-Mn for more than an hour caused growth suppression in strawberry plants. Therefore, the development of anthracnose can be effectively reduced by dipping strawberry plants for 10 min in prochloraz-Mn before planting.

Colletotrichum fructicola에 의해 주로 발생하는 국내 딸기 탄저병은 딸기재배에서 가장 문제가 되는 병해로 1차 전염원은 잠재감염주, 이병 잔재물과 다른 기주식물이다. 잠재감염주에 대한 효과적인 방제를 위해 건전한 식물체를 이용하거나 조기 진단 및 살균제 처리 방법이 중요하다. 따라서 잠재감염주에 대한 효과적인 탄저병 방제를 위해 2010년과 2011년에 살균제 침지처리효과를 조사하였다. 딸기 정식 전 자묘에 대한 prochloraz-Mn 침지처리구는 탄저병 이병주율이 가장 낮았으며 무처리 대비 76% 이상의 방제효과를 나타냈다. 그 외 azoxystrobin 처리구는 40% 이상의 탄저병 방제효과가 있었으나 pyraclostrobin, mancozeb, iminoctodine tris는 낮은 방제효과를 보였다. Prochloraz-Mn의 침지시간과 온도에 따른 탄저병 방제효과 조사에서는 처리간 유의차는 없었으며 1시간 이상 처리시 식물체의 생육이 억제되는 경향을 보였다. 따라서 딸기 정식 전 prochloraz-Mn을 10분 침지처리시 잠재감염주에 의한 탄저병 발생을 효과적으로 방제할 수 있을 것이다.

Keywords

References

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