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Distribution Characteristics of Weeds and Vegetation Types in Dioscorea oppostifolia Thunb. Field

마밭에 출현하는 잡초와 식생유형의 특성

  • Kim, Duk-Hwan (College of Agricultural Kyungpook National University) ;
  • Park, Jae-Man (College of Agricultural Kyungpook National University) ;
  • Kang, Sang-Mo (College of Agricultural Kyungpook National University) ;
  • Lee, Seok-Min (College of Agricultural Kyungpook National University) ;
  • Lee, In-Yong (Crop Protection Division, National Academy of Agricultural Science, RDA) ;
  • Lee, In-Jung (College of Agricultural Kyungpook National University)
  • 김덕환 (경북대학교 농업생명과학대학) ;
  • 박재만 (경북대학교 농업생명과학대학) ;
  • 강상모 (경북대학교 농업생명과학대학) ;
  • 이석민 (경북대학교 농업생명과학대학) ;
  • 이인용 (국립농업과학원 작물보호과) ;
  • 이인중 (경북대학교 농업생명과학대학)
  • Received : 2014.10.16
  • Accepted : 2014.12.05
  • Published : 2014.12.31

Abstract

A survey was conducted to identify the occurrence of problematic weed species on the Dioscorea oppostifolia fields in South Korea. Total 43 sites of the 8 different regions in S. Korea were investigated from May to October, 2014. In yam fields, the identified weeds were distributed in 11 families and 44 species. The exotic plants were identified as 3 families, 10 genera, 10 species. The vegetation of Dioscorea oppostifolia fields was classified into communities of 7 groups by methods of the Zurich-Montpellier school of phytosociology (Xanthium canadense Community, Bidens frondosa Community, Echinochloa oryzoides Community, Eclipta prostrata Community, Portulaca oleracea Community, Centipeda minima Community, Rorippa islandica Community). The weeds occurred in Dioscorea oppostifolia fields were divided into three groups in principal component plot analysis (PCA). Without weed control, yields loss in yam production was reached up to 82% as compared to weed controlled fields.

Keywords

Dioscorea oppostifolia Thunb.;vegetation;PCA analysis

Acknowledgement

Supported by : Rural Development Administration

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  1. Ecological Characteristics of Weed Species on Dry Field in the Eastern Region of Korea vol.4, pp.3, 2015, https://doi.org/10.5660/WTS.2015.4.3.188