Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Environment-Friendly Control of Beet Armyworm, Spodoptera exigua (Noctuidae: Lepidoptera) to Reduce Insecticide Use

농약 사용 저감화를 위한 환경 친화적인 파밤나방(Spodoptera exigua)의 방제

  • Jin, Da-Yong (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Paek, Seung-Kyung (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Kim, Jin-Su (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Choi, Su-Yeon (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Park, Chan (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Kim, Tae-Hwan (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Jin, Na-Young (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Jung, Sun-Young (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Youn, Young-Nam (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Yu, Yong-Man (Dept. Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
  • 김대용 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 백승경 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 김진수 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 최수연 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 박찬 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 김태환 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 진나영 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 정선영 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 윤영남 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 유용만 (충남대학교 농업생명과학대학 응용생물학과)
  • Published : 2009.06.30
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Abstract

For the environment-friendly control of beet armyworm, Spodoptera exigua, in spring onion fields, we have examined an alternative application method. Twenty-five insecticides registered for spring onion were tested for control effect against the beet armyworm in the laboratory, then the best 9 chemical and a single biological insecticides were selected and compared with 2 new isolates of Bacillus thuringiensis in a polyvinyl house. After that, 4 chemical and 3 B. thuringiensis treatments were used in the field for the control of beet armyworm in the spring onion. Two application methods are used: one is triple treatments with the same chemical and the other is alternative application with different chemicals and B. thuringiensis for 7 days intervals. Indoxacarb WP - chlorfluazuron EC - B.t. var. kurstaki CAB141 and indoxacarb WP - methoxyfenozide + spinosad SC - Chlorfluazuron EC - B.t. var. aizawai CAB109, B.t. var. kurstaki CAB141 showed greater than 78% mortality of beet armyworm larvae and greater than 43% damage decrease in spring onions infested by beet armyworm. These results showed that alternative applications had higher control effect than any other applications. It was suggested that alternative applications with microbial biological agents such as B. thuringiensis might minimize the development of insecticide resistance and might be used as the environment-friendly control of the beet armyworm.

파밭에서 발생하는 파밤나방을 친환경적으로 방제하기 위하여 농약저감화 방법중의 하나인 교호방제법을 검토하였다. 파밤나방에 등록되어 있는 살충제 가운데서 시판중인 25개 품목을 구입하여 실내실험에서 약효가 우수한 9종을 선발하여 비닐하우스내의 소포장 시험을 통해 화학 살충제 4종을 선발하였으며, 본 실험실에서 선발한 3종의 BT제의 교호처리를 포장시험에 적용하였다. 처리방법은 같은 약제를 1주일 간격으로 3회 처리한 단일처리와 BT제를 포함하여 서로 다른 약제를 1회씩 3종류를 1주일 간격으로 교호처리 하였다. 그 결과 화학농약과 미생물 농약을 처리한 Indoxacarb WP - Chlorfluazuron EC - B.t. var. kurstaki CAB141과 Indoxacarb WP - Methoxyfenozide + spinosad SC - Chlorfluazuron EC - B.t. var. aizawai CAB109, B.t. var. kurstaki CAB141의 3합이 평균 살충율 78%이상을 나타냈다. 따라서 단일처리의 방제가보다 10% 이상 높았으며 평균피해감소율 43% 이상에 달하여 단일처리한 조합보다 10% 높은 효과를 나타났다. 이와 같은 결과는, 동일한 약제 살포에 의한 저항성발달을 최소화하고, 천연물이나 미생물을 이용한 생물농약을 교호처리함으로서 화학농약의 살포 횟수를 감소시켜 친환경적으로 파밤나방을 방제할 수 있을 것으로 사료된다.

Keywords

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