Recent Increase of Apple Leafminer, Lyonetia prunifoliella (H bner) on Apple Orchards in Gyeongbuk Province

경북지역 사과원의 은무늬굴나방(Lyonetia prunifoliella) 발생동향

  • 최경희 (농촌진흥청 원예연구소 사과시험장) ;
  • 이순원 (농촌진흥청 원예연구소 사과시험장) ;
  • 이동혁 (농촌진흥청 원예연구소 사과시험장) ;
  • 김동아 (농촌진흥청 원예연구소 사과시험장) ;
  • 서상재 (상주대학교 원예학과)
  • Published : 2004.03.01

Abstract

Leaf damage by apple leafminer, Lyonetia prunifoliella, was surveyed on Fuji apple orchards with seedling rootstock from 1992 to 2001 and with M.9 rootstock from 1999 to 2001. The damage was negligible in apple orchards with seedling rootstock as 0.15% in 1992 and 0.06% in 1993. However it sharply increased to more than 3.39% since 1994, reaching at peak damage of 6.28% to 7.78% in 1996 to 1998. Damages on apple orchards with M.9 rootstock from 1999 to 2001 were higher as 6.09% to 15.3%, compared with those with seedling rootstock in the same years. In seedling rootstock apple, the damage was highest on september but in M.9 rootstock apple, the difference was not significant. Leaf damage showed no differences between cultivars including 4 Korean cultivars and Fuji. These results may explain that increase of M.9 rootstock apple orchards is responsible for the recent outbreak of the leafminer in Korea.

1992년부터 2001년까지 10년 간 경북 사과주산지 4-6개 시군의 일반대목 사과원과 1999-2001년까지 3년 5-6개 시군의 M.9왜성대목 사과원에서 은무늬굴나방의 발생동향과 피해정도를 조사하였다. 1992년과 1993년의 발생과원율은 각각 10%와 25%, 피해엽율은 0.15%와 0.06%로 매우 경미하였다. 그러나, 1994년부터 2001년까지는 피해엽율이 급증하여 조사된 모든 일반대목 사과원에서 발생하였으며, 특히, 1996-1998년의 피해엽율이 6.28%-7.78%로 가장 높았다. M.9왜성대목 사과원에서는 3년 모두 발생과원율이 100%였으며, 누적피해엽율은 99년은 15.3%로 같은 해의 일반대목 사과원의 3.68%에 비해 높았으며, 2000년과 2001년은 통계적 유의성은 없었으나 M.9왜성대목 사과원의 발생밀도가 높았다. 일반대목 사과원의 월별 발생과원율과 피해엽율을 조사한 결과, 9월의 발생밀도가 가장 높았으며, M.9왜성대목 사과원에서는 통계적 유의성이 없었다. 국내에서 육성된 홍로. 감홍, 추광, 화홍 등 4개 품종과 후지의 은무늬굴나방에 의한 피해정도는 차이가 없었다. 이상의 결과로 보아 M.9왜성대목 사과원의 증가가 최근의 은무늬굴나방의 다발생과 관련이 클 것으로 판단된다.

Keywords

References

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