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Occurrence of Stink Bugs and Pecky Rice Damage by Stink Bugs in Paddy Fields in Gyeonggi-do, Korea

경기도 벼 재배지 노린재류의 발생소장과 벼 반점미 피해

  • Lee, Jin-Gu (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Hong, Soon-Sung (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Kim, Jin-Young (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Park, Kyeong-Yeol (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Lim, Jae-Wook (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Lee, Joon-Ho (Department of Agricultural Biotechnology, Seoul National University)
  • 이진구 (경기도농업기술원 환경농업연구과) ;
  • 홍순성 (경기도농업기술원 환경농업연구과) ;
  • 김진영 (경기도농업기술원 환경농업연구과) ;
  • 박경열 (경기도농업기술원 환경농업연구과) ;
  • 임재욱 (경기도농업기술원 환경농업연구과) ;
  • 이준호 (서울대학교 농생명공학부)
  • Published : 2009.03.30

Abstract

This study was carried out to survey the occurrence of stink bugs and pecky rice grain caused by the stink bugs in paddy fields in six districts of Gyeonggi-do. In the levee of the paddy fields, 30 species of the stink bugs were collected, and the dominant species were Paromius exiguus in Hwaseong and Siheung, and Stenotus rubrovittatus in Pyeongtaek, Icheon and Paju. In the paddy fields, 23 species were collected, and the dominant species were Paromius exiguus in Siheung, and Stenotus rubrovittatus in Pyeongtaek, Icheon and Paju. P. exiguus overwintered and proliferated mainly in the west coastal region, where its host plants, Imperata cylindrica and Calamagrostis epigeois, were abundant, and then moved to paddy fields later in the season, resulting in the peak density in September in paddy area. Stenotus rubrovittatus and Cletus punctiger were abundant in paddy area in August and September, and Eysarcoris aeneus was abundant in June and July. When the stink bugs were inoculated on the rice, the rate of pecky rice caused by E. aeneus and P. exiguus at milk ripe stage was 10.2% and 4.8%, respectively, and the rate by S. rubrovittatus and P. exiguus at dough ripe stage was 4.3% and 2.7%, respectively. The damage shape of pecky rice was distinctive according to the species. The surface of pecky rice by P. exiguus was very smooth but the surface of pecky rice by E. aeneus was rough and caved. In the pecky rice by S. rubrovittatus, the spot occurred at the topside of the grain.

벼 재배지에서 발생하는 노린재의 종류와 발생소장, 반점미 피해를 구명하기 위해 화성, 평택 등 경기지역 6개 시군 12개 읍면의 논과 논둑에서 노린재 발생밀도와 노린재 종류별 피해양상을 조사하였다. 논둑에서 채집된 노린재는 모두 30종이었고, 화성과 시흥에서 흑다리긴노린재(Paromius exiguus), 평택, 파주, 이천에서 홍색얼룩장님노린재(Stenotus rubrovittatus)가 우점하였다. 논에서 채집된 노린재는 모두 23종이었고, 시흥에서 흑다리긴노린재, 평택, 파주, 이천에서 홍색얼룩장님노린재가 우점하였다. 흑다리긴노린재는 화성 시화호 등 주로 서해안 습지에서 월동하고 증식한 후 이동하여 $8{\sim}9$월에 논둑에서 최고의 발생을 보였으며, 홍색얼룩장님노린재와 시골가시허리노린재(Cletus punctiger)는 $8{\sim}9$월에, 가시점둥글노린재(Eysarcoris aeneus)는 $6{\sim}7$월에 논둑에서 발생이 많았다. 벼에 노린재 종류별로 접종하여 반점미 피해를 확인한 결과, 유숙기 접종시 가시점둥글노린재가 10.2%, 흑다리긴노린재가 4.8%, 호숙기 접종시는 홍색얼룩장님노린재(Stenotus rubrovittatus)가 4.3%, 흑다리긴노린재가 2.7%의 반점미율을 보였다. 흑다리긴노린재에 의한 반점미 피해증상은 피해부위의 표면이 매끈하고 함몰되는 것이 없었으나, 가시점둥글노린재에 의한 반점미 피해증상은 흑다리긴노린재와 유사하지만 피해부위가 함몰되는 것이 많았고 그 표면은 거칠었다. 홍색얼룩장님노린재는 벼 낱알 위쪽을 가해하여 반점이 윗부분에 집중되는 특징이 있었다.

Keywords

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