한국유기농업학회지 (Korean Journal of Organic Agriculture)

  • 제24권4호
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  • Pages.919-929
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  • 2016
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  • 1229-3571(pISSN)
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  • 2287-819X(eISSN)
한국유기농업학회 (Korean Association of Organic Agriculture)
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유기농업자재와 순지르기를 이용한 오이 노균병 방제

Effect of Organic Materials and the Removal of Apical Shoot on Controlling Cucumber Downy Mildew

  • 박종원 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 김용기 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 박소향 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 홍성준 (농촌진흥청 농촌지원국 재해대응과) ;
  • 심창기 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 김민정 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 박종호 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 한은정 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 소현규 (농촌진흥청 국립농업과학원 농업환경부 유기농업과) ;
  • 김석철 (농촌진흥청 국립농업과학원 농업환경부 유기농업과)
  • 투고 : 2016.10.31
  • 심사 : 2016.11.14
  • 발행 : 2016.11.30
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초록

본 연구는 비닐하우스에서 오이재배 시 유기농업자재(석회보르도액, 황토유황합제)와 순지르기가 노균병 발병에 미치는 영향을 알아보기 위하여 수행되었다. 자재는 석회보르도액과 황토유황합제를 사용하였으며 석회보르도액은 최적농도를 규명하기 위해 석회와 황산구리의 배합비율을 조절하여 5가지를 만들어서 노균병 발생 후 치료위주로 처리하였다. 본 실험을 수행한 결과, 자재 중에서는 4-6식 석회보르도액이 가장 효율적이라는 것을 알 수 있었고 황토유황합제는 석회보르도액보다 효과가 떨어졌으나 병에 대한 억제효과가 있었다. 순지르기가 병 발생억제에 미치는 영향에 있어서는 순지르기를 한 것이 제거하지 않은 것 보다 병 발생이 56.3% 억제되었다. 순지르기시기에 따른 오이 노균병 발생정도는 감수성 품종인 미소백다다기의 경우 순지르기를 할수록 병 발생이 감소되었고 저항성 품종인 흑룡삼척의 경우에는 병 발생이 적어 차이를 보이지 않았다. 또한 유기농업자재와 순지르기를 병행처리 한 결과, 자재와 순지르기 처리를 병행 처리한 처리구가 모두 병반면적률이 낮았으며 그 중에서도 석회보르도액 4-6식이 가장 낮은 병반면적률을 나타내었다. 본 연구를 통해 순지르기가 오이 노균병 억제에 효과가 있고 자재와 함께 병행하여 처리하였을 때 더 효과가 높았음을 알 수 있었다.

This study investigated the effect of organic materials (Bordeaux, Loess-sulfur) and the removal of apical shoot against downy mildew disease on cucumber cultivated in greenhouse. Five kinds of Bordeaux were made by adjusting mixing ratio of lime and copper sulfate in order to elucidate the optimal combination. The 4-6type Bordeaux was selected as the most effective combination for controlling cucumber downy mildew. Loess-sulfur showed inhibitory activity against cucumber downey mildew, but it was less effective than Bordeaux. It was confirmed that apical shoot cutting could reduce the incidence of cucumber downy mildew disease by 56.3%. When apical shoots of susceptible cucumber variety were cut at different leaf stages, disease incidence by early apical shoot cutting treatment was lower than that of late apical shoot cutting treatment. However in a resistant variety, 'Heukryungsamcheok', disease incidences of all cucumber apical shoot cutting treatments were lower than that of non-cutting treatment, but there was no differences between apical shoot cutting treatments due to low disease incidences. In addition, when organic materials and apical shoot cutting treatment were carried out in parallel, the combined treatments of organic materials and apical shoot cutting showed low disease incidence of cucumber downy mildew compared to untreated control. The lowest disease incidence of cucumber downy mildew was recorded in the combined treatment of 4-6type Bordeaux and apical shoot cutting. This study confirmed that apical shoot cutting can reduce the disease incidence of cucumber downy mildew and the combined treatment of apical shoot cutting and organic materials showed higher suppressive effect against cucumber downy mildew.

키워드

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