Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Changes in Weed Vegetation in Paddy Fields over the Last 50 Years in Korea

과거 50년간 우리나라 논잡초 군락의 변화

  • Received : 2015.12.12
  • Accepted : 2016.03.09
  • Published : 2016.03.31
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Abstract

The Rural Development Administration of Korea conducted a series of surveys of paddy weeds from 1971 to 2013 in approximately 10-year cycles and the results have been used for the efficient weed management of paddy fields. In 1971, annual weeds such as Rotala indica, Eleocharis acicularis f. longiseta, and Monochoria vaginalis were dominant. In 1981, the population of Echinochloa species decreased whereas broadleaf weeds such as M. vaginalis, Sagittaria pygmaea, and S. trifolia were dominant. In 1991, perennial weeds such as Eleocharis kuroguwai, S. pygmaea, and S. trifolia were dominant over annual weeds. In 2000, M. vaginalis was the most abundant species, followed by E. kuroguwai, Echinochloa species, and S. trifolia. In 2013, herbicide-resistant Echinochloa species and M. vaginalis were most dominant, followed by E. kuroguwai, Scirpus juncoides, and S. trifolia. It has been predicted that the prevalence of Echinochloa species will continue to increase and that perennial weeds will be more abundant than annual ones in the near future. The occurrence of herbicide-resistant weeds and exotic weeds will also increase due to global warming and changes in agricultural patterns.

농촌진흥청에서는 1971년부터 2013년까지 10년 주기로 논잡초 발생 분포조사를 실시하여 논잡초의 효율적인 관리에 이용되고 있다. 1971년에는 주로 마디꽃, 쇠털골, 물달개비 등 일년생잡초가 많이 발생된 반면에, 1981년에는 피의 발생이 줄어들고, 물달개비와 올미, 벗풀 등의 광엽잡초가 우점하였다. 1991년에는 일년생잡초 보다는 올방개, 올미, 벗풀 등과 같은 다년생잡초가 많았다. 2000년에는 물달개비가 가장 많이 발생되었고 그 다음으로 올방개, 피, 벗풀 등이었다. 2013년에는 제초제 저항성잡초인 피와 물달개비가 최우점하였으며, 올방개, 올챙이고랭이, 벗풀 등의 순이었다. 향후 논잡초 발생은 피의 발생량이 계속 증가할 것이고, 다년생잡초가 일년생잡초보다 발생비율이 높아질 것으로 예상된다. 또 이러한 추세는 기후변화와 재배방식 등의 농업패턴 변화로 제초제 저항성 잡초와 외래잡초의 발생이 증가될 것이다.

Keywords

References

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