Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Scouting Methods for Larva and Adult Alfalfa Weevil, Hypera postica (Coleoptera: Curculionidae) on Chinese Milkvetch, Astragalus sinicus L.

자운영답에서 알팔파바구미 유충 및 성충 조사방법

  • Lee, Heung-Su (Division of Plant Environment, Gyongsangnam-do Agricultural Research & Extension Services) ;
  • Kwon, Jin-Hyuk (Division of Plant Environment, Gyongsangnam-do Agricultural Research & Extension Services) ;
  • Chung, Bu-Keun (Division of Plant Environment, Gyongsangnam-do Agricultural Research & Extension Services) ;
  • Kim, Tae-Sung (Division of Plant Environment, Gyongsangnam-do Agricultural Research & Extension Services)
  • 이흥수 (경남농업기술원 친환경연구과) ;
  • 권진혁 (경남농업기술원 친환경연구과) ;
  • 정부근 (경남농업기술원 친환경연구과) ;
  • 김태성 (경남농업기술원 친환경연구과)
  • Received : 2011.11.12
  • Accepted : 2012.02.09
  • Published : 2012.03.01
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Abstract

This study was conducted to evaluate the scouting methods for larva and adults of the alfalfa weevil, $Hypera$ $postica$ Gyllenhal on Chinese milkvetch, $Astragalus$ $sinicus$ L. in the field. Three sampling methods, shake-bucket, shake-picking, and a sweeping net were evaluated for collecting alfalfa weevil larvae. We found significant differences among scouting methods and date in all survey fields. Sweep-net sampling was less able to detect small larvae than large larvae, which were not detected until early April whereas the shake-bucket, and shake-picking methods efficiently collected larvae from middle March. A Pitfall trap with three different baits - no bait, kidney bean seeds and sprouting kidney beans were compared for collection efficiency of alfalfa weevil adults. Collection efficiencies were significantly different by bait(p<0.018). Traps baited with sprouting kidney beans were the most efficient for collecting the alfalfa weevil. The number of alfalfa weevil caught was not significantly different between kidney bean seed and no bait in the pitfall trap. Therefore, the shake-bucket method for larvae and a pitfall trap baited with sprouting kidney beans for adults are recommended for scouting of the alfalfa weevil in a Chinese milkvetch field.

자운영포장에서 알팔파바구미 유충 및 성충의 조사방법에 따른 효율을 평가하기 위하여 본 실험을 수행하였다. 알팔파바구미 유충 밀도를 Shake-bucket, Shake-picking, Sweeping net 방법을 사용한 결과 조사지역 3곳에서 조사방법과 조사시기에 따라 유의하게 차이가 있었다. 포충망을 이용하여 유충밀도를 조사한 결과 4월초까지 유충을 조사할 수 없어 초기에 발생하는 유충을 조사하는데 적합하지 않았다. Shake-bucket과 Shake-picking을 이용한 조사에서 유충발생이 3월 중순부터 확인되었으며, 두 방법간에 차이는 없었다. 미끼를 넣은 Pitfall trap을 이용하여 알팔파바구미 성충 밀도를 조사한 결과 유인조건에 따라 유의하게 차이가 있었다(p<0.018). 각 처리간 성충 유인수를 조사한 결과 싹 틔운 강남콩 92마리, 강낭콩 종자 42마리, 트랩만 설치한 것에서 39마리로 싹 틔운 콩을 넣은 트랩에서 밀도유인 효과가 가장 좋았다. 자운영답에서 알팔파 바구미를 조사할 때 초기 발생하는 유충은 Shake-bucket법을 성충은 싹 틔운 강남콩을 미끼로 하는 pitfall trap을 이용하는 것이 좋다.

Keywords

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