Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Weed Occurrence in Organic Apple Orchards by Different Cover Crops

유기재배 사과과원의 피복작물별 잡초발생

  • Oh, Young-Ju (Korea Biodiversity Research Center Co., Ltd.) ;
  • Song, Yang-Ik (Apple Research Station, National Institute of Horticultural & Herbal Science, RDA) ;
  • Kang, Seok-Beom (Citrus Research Station, National Institute of Horticultural & Herbal Science, RDA) ;
  • Hong, Sun-Hee (Institute of Environment and Ecology, Korea University) ;
  • Choi, Jin-Ho (Pear Research Station, National Institute of Horticultural & Herbal Science, RDA) ;
  • Paik, Weon-Ki (Department of Life Science, Daejin University)
  • 오영주 (한반도생물다양성연구소) ;
  • 송양익 (농촌진흥청 국립원예특작과학원 감귤시험장) ;
  • 강석범 (농촌진흥청 국립원예특작과학원 감귤시험장) ;
  • 홍선희 (고려대학교 환경생태연구소) ;
  • 최진호 (농촌진흥청 국립원예특작과학원 배연구소) ;
  • 백원기 (대진대학교 생명과학과)
  • Received : 2012.11.12
  • Accepted : 2012.11.25
  • Published : 2012.12.31
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Abstract

This study was conducted to select the cover crops in organic apple orchard by estimating the coverage of each cover crops and time-periodic weed occurrence. Seeding of Festuca myuros and Trifolium repens showed high contents of soil organic matter and phosphorus as compared with control. Seeding of Trifolium sp., Hordeum vulgare and Secale cereal reduced relatively occurrence of weed in May and S. cereal among others showed the greatest effect in June. In July, seeding F. arundinaceae and Poa pratensis showed low coverage and a lot of weeds occurred in their field. Fifty one species were occurred as weeds and it needs to removal of high and broadleaf weeds such as Chenopodium ficifolium, C. album var. centrorubru and Humulus japonicus in spring to increase the rate of ground cover. P. pratensis having the lowest cover rate showed the similar dry weight of weeds as compared with control. Trifolium sp. and Persicaria hydropiper had a high correlation with contents of soil organic matter and C. album var. centrorubru had a correlation with contents of soil phosphorus by CCA analysis.

유기 사과과원의 피복작물 선정을 위해 피복작물의 피복율과 시기별 잡초의 발생양상에 대해 조사하였다. 토양의 화학성분은 자연초생구에 비해 들묵새와 화이트클로버가 유기물 함량과 인산 함량이 다소 높게 분석되었다. 피복작물별 잡초 종의 출현은 5월에는 클로버 종류와 청보리, 호밀이 비교적 잡초 종의 출현이 억제되었고 6월에는 호밀이 가장 좋은 효과를 가져왔다. 7월에는 피복율이 낮은 톨페스큐와 켄터키블루그라스에서는 많은 잡초 종이 출현하였다. 유기 사과과원의 발생한 잡초는 총 51종으로 조사되었고 피복율을 높이기 위해서는 피복식물 보다 키가 크고 광엽인 좀명아주, 명아주, 환삼덩굴 등의 봄철 제거가 필요하다. 잡초의 건물중을 측정한 결과 피복율이 가장 낮았던 켄터키블루그라스에서 대조구와 거의 유사한 결과를 보여주었다. 잡초와 토양과의 관계에 대해 CCA로 분석한 결과 1축에서는 토끼풀과 여뀌가 유기물의 함량과 높은 상과관계를 가지며 명아주는 인산의 함량과 상관관계를 가지고 있는 것으로 분석되었다.

Keywords

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