농약과학회지 (The Korean Journal of Pesticide Science)

  • 제19권4호
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  • Pages.394-398
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  • 2015
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  • 1226-6183(pISSN)
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  • 2287-2051(eISSN)
한국농약과학회 (The Korean Society of Pesticide Science)
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벼 잎집무늬마름병의 발생정도에 따른 경제적 방제수준 설정

Establishment of Economic Threshold Caused by Rice Sheath Blight Disease severity

  • 심홍식 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 최효원 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 예완해 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 이용환 (농촌진흥청 재해대응과)
  • Shim, Hongsik (Crop Protection Division, National Academy of Agricultural Science) ;
  • Choi, Hyo Won (Crop Protection Division, National Academy of Agricultural Science) ;
  • Yeh, Wan-Hae (Crop Protection Division, National Academy of Agricultural Science) ;
  • Lee, Yong-Hwan (Rural Development Administration)
  • 투고 : 2015.08.31
  • 심사 : 2015.11.09
  • 발행 : 2015.12.31
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초록

본 연구는 잎집무늬마름병에 대한 약제방제수준을 설정하기 위하여 오대벼를 공시하여 시험을 수행하였다. 잎집무늬마름병 발병정도에 따라 수량에 미치는 관계를 분석하였으며, 수량 구성 요소인 주당 이삭수, 이삭당 립수, 등숙률, 천립중과의 관계를 분석하였다. 그 결과 발병주율에 대한 수량과의 관계는 r = -0.93, 이삭당 립수 r = -0.66, 등숙율은 r = -0.77로 고도의 유의성 있는 부의 상관이 있었으나, 주당 이삭수와 천립중은 유의한 상관이 인정되지 않았다. 따라서 본시험에서는 발병과 상관이 높은 수량에 대하여 경제적 방제수준은 발병주율 7.8%로 설정할 수 있었다.

This research was performed to establish economic threshold (ET) for rice sheath blight disease with the cultivar Odeabyeo. Total yield and yield components, such as the panicle number per hill, the spikelet per panicle, the percent ripened grain and the thousand grain weight were evaluated depending on the disease severity of sheath blight on rice, respectively. Significant negative correlation between the percent of diseased hill (PDH) and total yield was observed (r = -0.93). Moreover, negative correlation coefficients were found between PDH and spikelet per panicle, and percent ripened grain (r = -0.66 and -0.77, respectively). There were no correlations between PDH and the panical number per hill, and a thousand grain weight, respectively. In this study, economic threshold level on sheath blight disease on rice was established on 7.8% of PDH.

키워드

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