Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Control Efficacy of Several Fungicides against Downy Mildew of Onion at Nursery Seedling Stage

육묘상 양파 노균병에 대한 몇 가지 살균제의 방제 효과

  • Mo, Chung-Yong (Department of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University) ;
  • Lee, Jang Hoon (Department of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University) ;
  • Ko, Suk-Juo (Jeollanam-do Agricultural Research and Extension Services) ;
  • Yang, Kwang-Yeol (Department of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University)
  • 모청용 (전남대학교 농업생명과학대학 식물생명공학부) ;
  • 이장훈 (전남대학교 농업생명과학대학 식물생명공학부) ;
  • 고숙주 (전라남도농업기술원) ;
  • 양광열 (전남대학교 농업생명과학대학 식물생명공학부)
  • Received : 2016.06.11
  • Accepted : 2016.08.08
  • Published : 2016.09.30
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Abstract

During the nursery seedlings stage at Muan in 2013, moisture and temperature conditions were favorable for the occurrence of onion downy mildew. Several fungicides were evaluated for controlling onion downy mildew at the stage of seedling. The disease incidence of the untreated control was 51.1%, which was sufficient to evaluate the fungicide efficacy for the control of onion downy mildew. Incidence at the mancozeb treatment (MAN treatment) was 4.4% and it was the highest control value of 91.4%. Incidence at the various fungicides treatment (MIX treatment) consisted of amectotradin plus dimethomorph, floupicolide plus propamocarb HCl, or dimethomorph plus pyraclostrobin was 10.0%, and the control value of the MIX treatment was 80.4%. Among the tested fungicides, amectotradin plus dimethomorph (AME plus DIM treatment) was selected and treated. Incidence of AME plus DIM treatment was 12.2%. There was statistically significant difference among the three different treatments and the untreated control. These results suggest that the application of fungicides on onion nursery seedlings was effective to control the onion downy mildew.

무안지역의 양파 농가에서 육묘 재배가 시작된 2013년 9월 중 하순경부터 본밭에 정식이 이루어진 11월 하순까지의 온도 및 상대습도 조건이 양파 노균병 발병에 적합한 환경에 해당하였다. 그래서 육묘 단계에서 발생하는 양파 노균병의 방제를 위해 살균제를 이용하여 연구를 수행한 결과, 양파 육묘상에 서로 다른 살균제들이 처리된 각각의 처리구에 비해서 무처리구에서는 51.1%의 이병주율을 보여 살균제 효과를 평가하기에 충분하였다. 다양한 작용기작을 가지고 있고 포자발아 억제 효과가 우수하여 보호살균제로 많이 사용되고 있는 mancozeb을 세 차례 살포한 MAN 처리구의 이병주율이 4.4%로 나타나 방제가가 91.4%로 조사되어 가장 우수한 방제 효과를 보였고, 작용기작이 각각 다른 살균제인 amectotradin+dimethomorph, fluopicolide+propamocarb HCl, dimethomorph+pyraclostrobin을 순서대로 살포한 MIX 처리구는 10.0%의 이병주율을 보여 방제가가 80.4%로 나타났다. 그리고 amectotradin+dimethomorph만을 세 차례 살포한 AME+DIM 처리구는 12.2%의 이병주율을 보여 방제가가 76.1%로 나타나 방제 효과가 다른 두 처리구에 비해 다소 낮게 나타났으나 살균제가 처리된 모든 처리구에서 무처리구에 비해서 통계적으로 유의한 차이를 나타내었다. 따라서 양파 육묘 재배 시기가 노균병발병에 적합한 환경에 해당되므로 살균제 등을 사용하여 육묘 단계부터 양파 노균병 방제에 대한 적극적인 노력이 필요하다고 생각한다.

Keywords

References

  1. Abkhoo, J. 2012. Efficacy of different fungicides for the control of downy mildew of onion. 1: 331. doi: 10.4172/scientificreports.331.
  2. Bashi, E. and Aylor, D. E. 1983. Survival of detached sporangia of Peronospora destructor and Peronospora tabacina. Phytopathology 73: 1135-1139. https://doi.org/10.1094/Phyto-73-1135
  3. Choi, I. H., Lee, E. T., Kim, C. W. and Nam, S. S. 2011. Comparison of damage aspects of the first with the second by downy mildew disease for disease forecasting in the onion field. Korean J. Hortic. Sci. Technol. 29(Suppl II): 112-113. (Abstract)
  4. Develash, R. K. and Sugha, S. K. 1997. Management of downy mildew (Peronospora destructor) of onion (Allium cepa). Crop Prot. 16: 63-67. https://doi.org/10.1016/S0261-2194(96)00056-7
  5. Gisi, U. and Sierotzki, H. 2008. Fungicide modes of action and resistance in downy mildews. Eur. J. Plant Pathol. 122: 157-167. https://doi.org/10.1007/s10658-008-9290-5
  6. Hildebrand, P. D. and Sutton, J. C. 1982. Weather variables in relation to an epidemic of onion downy mildew. Phytopathology 72: 219-224. https://doi.org/10.1094/Phyto-72-219
  7. Hildebrand, P. D. and Sutton, J. C. 1984. Relationships of temperature, moisture and inoculum density to the infection cycle of Peronospora destructor. Can. J. Plant Pathol. 6: 127-134. https://doi.org/10.1080/07060668409501572
  8. Hwang, E. J., Choi, I. H., Kwon, Y. S., Lee, E. T. and Kim, C. W. 2013. Primary infection study of downy mildew according to different times of onion (Allium cepa L.) transplants. Korean J. Hortic. Sci. Technol. 31(Suppl II): 64-65. (Abstract)
  9. Jung, B. J. 1964. Study on the control of downy mildew of onion with several new fungicides. Korean J. Plant Prot. 3: 11-14.
  10. Palti, J. 1989. Epidemiology, prediction and control of onion downy mildew caused by Peronospora destructor. Phytoparasitica 17: 31-48. https://doi.org/10.1007/BF02979603
  11. Raziq, F., Alam, I., Naz, I. and Khan, H. 2008. Evaluation of fungicides for controlling downy mildew of onion under field conditions. Sarhad J. Agric. 24: 85-91.
  12. Smith, R. W., Lorbeer, J. W. and Abd-Elrazik, A. A. 1985. Reappearance and control of onion downy mildew epidemics in New York. Plant Dis. 69: 703-706.
  13. Surviliene, E., Valuskaite, A. and Raudonis, L. 2008. The effect of fungicides on the development of downy mildew of onions. Zemdirbyste 95: 171-179.
  14. Viranyi, F. 1974. Studies on the biology and ecology of onion downy mildew (Peronospora destructor (Berk.) Fries) in Hungary. II. Factors influencing sporulation and conidium germination. Acta Phytopathol. Acad. Sci. Hung. 9: 315-318.