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The Occurrence of Weed Species in Coix lacryma-jobi var. mayuen Fields

율무밭에 발생하는 잡초 양상

  • 이인용 (국립농업과학원 작물보호과) ;
  • 김창석 (국립농업과학원 작물보호과) ;
  • 이정란 (국립농업과학원 작물보호과) ;
  • 한정아 (경기도농업기술원 소득자원연구소) ;
  • 김경훈 (국립농업과학원 작물보호과) ;
  • 김미선 (국립농업과학원 작물보호과) ;
  • 송희근 (국립농업과학원 작물보호과) ;
  • 김덕환 (경북대학교 농업생명과학대학)
  • Received : 2014.03.13
  • Accepted : 2014.06.13
  • Published : 2014.06.30

Abstract

This study was conducted in order to utilize the basic data for weed control by surveying the occurrence of weed species and the degree of damages caused by those weeds occurred in cultivated Coix lacryma-jobi var. mayuen fields. Survey was carried out three times, from June to September in 2013. The weed flora was composed of a total of 98 weeds, 33 family, of which 58 species were annual, 21 species were biennial, and 19 were perennial plants. Thirty-one exotic species were included as well. Dominance was the highest with Digitaria ciliaris followed by Acalypha australis, Echinochloa crus-galli, Portulaca oleracea, Bidens frondosa etc. in order. In the PCA plot analysis, weeds occurred in C. lacryma-jobi var. mayuen fields were divided into three groups, Panicum dichotomitlorum community, Echinochloa crus-galli-Sigesbeckia pubescens community and Acalypha australis community. Yield of C. lacryma-jobi var. mayuen was reduced 60% in no weeding plots comparing to that in weed management plots.

Keywords

Coix lacryma-jobi var. mayuen;PCA analysis;Weed

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