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Nematicidal Effect of Root-knot Nematode (Meloidogyne incognita) by Biological Nematicide

생물학적 선충 방제제를 이용한 고구마 뿌리혹선충 (Meloidogyne incognita)의 방제효과

  • Park, Moon-Hyun (Research Institute, HyosungONB Co., Ltd.) ;
  • Kim, Jin-Kwang (Department of Bio-Environmental Chemistry, College of Agriculture and LifeSciences, Chungnam National University) ;
  • Choi, Won-Ho (Department of Bio-Environmental Chemistry, College of Agriculture and LifeSciences, Chungnam National University) ;
  • Yoon, Min-Ho (Department of Bio-Environmental Chemistry, College of Agriculture and LifeSciences, Chungnam National University)
  • 박문현 ((주)효성오앤비) ;
  • 김진광 (충남대학교 농업생명과학대학 생물환경화학과) ;
  • 최원호 (충남대학교 농업생명과학대학 생물환경화학과) ;
  • 윤민호 (충남대학교 농업생명과학대학 생물환경화학과)
  • Received : 2011.03.16
  • Accepted : 2011.04.01
  • Published : 2011.04.30

Abstract

An nematophagous fungi Arthrobotrys thaumasia Nema-1 and Pseudomonas putida C-5, which degrade the collagen and gelatin, was isolated from controlled horticultural soils in Seonnam-myun, Sungju-gun, Kyungpook and Woosung-myun, Gongju-shi, Chungnam to develop biological nematode pesticide. When $5,000mL\;L^{-1}$ of A. thaumasia Nema-1 culture was treated to Meloidogyne incognita, the nematicidal activity resulted in 55% at 72 hours after treatment. While the nematicidal activity increased to 65% by treating the culture mixture of $5,000mL\;L^{-1}$ Nema-1 and P. putida C-5 after 72 hours. Furthermore, the nematicidal activity of the mixture containing cinnamon extract $50mg\;L^{-1}$, each $5,000mL\;L^{-1}$ of Nema-1 and C-5 culture was elevated to 89% at 72 hours after treatment, comparing to the result showed 17% and 57% of the nematicidal activity, respectively by the treatment of chemical nemato pesticide Fosthiazate $50mg\;L^{-1}$ and neem oil $2,000mL\;L^{-1}$. These results suggested that the mixture of microorganisms and plant extract were more effective biological nematicide than the case of only microorganism or plant extract for nematode control.

친환경 선충 방제제 개발을 위해 경북 성주군 선남면 및 충남 공주시 우성면의 시설원예 재배지 토양으로 부터 선충 포식성이 뛰어난 곰팡이 Arthrobotrys thaumasia Nema-1과 선충 표피성분인 collagen과 알집 주성분인 gelatin 분해능이 뛰어난 Pseudomonas putida C-5를 분리 하였다. 이들 분리균의 선충치사 효과를 검토한 결과, A. thaumasia Nema-1 곰팡이 배양액 $5,000mL\;L^{-1}$을 처리 시 방제효과는 72시간 후에 55%이었으나, 포식성 곰팡이 Nema-1과 P. putida C-5 세균 배양액 각각 $5,000mL\;L^{-1}$ 혼합 처리구에서는 65%로 상승하였다. 또한 선충치사효과를 증진시키기 위하여 살선충 활성이 있다고 보고된 계피추출물 $50mg\;L^{-1}$$5,000mL\;L^{-1}$의 Nema-1과 C-5 배양액과 혼합하여 처리하였을 때 72시간 경과 후의 치사율은 89%로 상승되었으며, 대표적 살선충제인 선충탄(Fosthiazate) $50mg\;L^{-1}$의 방제가 17%와 님오일 $2,000mL\;L^{-1}$의 방제가 57% 보다 훨씬 높은 수준이었다. 이상의 결과는 생물학적 선충방제제는 미생물 또는 식물체 추출물 단제 보다는 혼합물 형태로 사용하는 것이 더 효과적이라는 결과를 제시하였다.

Keywords

References

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