Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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The Distribution and Occurrence of Sulfonylurea-Resistant Weeds in Paddy Fields of Gyeongbuk Province

경북 지역 Sulfonylurea계 저항성 논잡초 발생양상과 분포

  • Kim, Sang Kuk (Gyeongsangbuk-do Provincial Agricultural Research & Extension Services) ;
  • Kim, Hak Yoon (Department of Global Environment, Keimyung University)
  • Received : 2013.02.07
  • Accepted : 2013.05.30
  • Published : 2013.06.30
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Abstract

The study was carried out to obtain the basic information on distribution and occurrence of weeds including resistant weeds to sulfonylurea herbicides in paddy fields of Gyeongbuk province. In weed distribution on life cycle, annual weed was occupied by 91.8% and perennials were 8.2%, respectively. In morphological distribution of weeds, broad leaf weeds were 85.7%, sedges was 9.1%, and grass weed was 3.8%, respectively. Sulfonylurea-resistant weeds in paddy fields of twelve regions were widely occurred except for Yecheon region. The six sulfonylurea resistant biotypes occurred in paddy fields of Gyeongbuk province were Lindernia dubia, Eleocharis kuroguwai, Monochoria vaginalis and Ludwigia prostrata. It revealed that occurrence rate and area of sulfonylurea-resistant weeds were about 15.9 % and 22,420 ha in Gyeongbuk province.

본 연구는 경상북도 지역의 논에 발생하는 잡초종의 발생과 분포 및 sulfonylurea계 제초제 저항성잡초 발생비율을 조사한 것으로 생활사별 논잡초 분포는 일년생이 91.8%로서 다년생 8.2%보다 많았으며, 형태적 분포는 광엽잡초 85.7%, 사초과 9.1%, 화본과 3.8%였다. 잡초종은 물달개비, 미국외풀, 피, 여뀌바늘, 올챙이고랭이, 미국가막사리이었고, 물달개비가 우점하는 지역과 발생률은 포항, 의성, 상주, 경주 순으로 각각 85.1%, 76.3%, 73.5%, 58.9%였으며, 미국외풀은 영덕, 고령, 군위, 영양, 안동, 예천, 구미, 영천 순으로 발생률은 각각 96.3%, 93.8%, 92.7%, 90.7%, 86.8%, 70.6%, 66.7%, 56.2%로 나타났다. 지역별로 주요 논잡초는 물달개비, 미국외풀, 너도방동사니, 피, 올챙이고랭이 순이었고, 우점도를 1981년, 1992년 및 2012년도와 비교하면 미국외풀(42.8%), 물달개비(37.5%), 너도방동사니(7.9%)순이었다. 논에 발생한 sulfonylurea계 제초제 저항성 잡초는 물달개비, 여뀌바늘, 미국외풀, 올챙이고랭이로 총 4종이었고, 제초제 저항성잡초 가운데 가장 많은 발생면적을 보인 초종은 미국외풀로 11.1%를 차지하였다. 2012년 조사된 지역에 대한 제초제 저항성 잡초 발생률은 15.9%정도로 경북지역의 벼 재배면적(141,005ha)을 고려하면 제초제 저항성잡초 발생면적은 22,420ha정도로 추정되었다.

Keywords

References

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