Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Occurrence characteristics and management plans of Lactuca scariola L., an ecosystem disturbance plant

생태계교란식물 가시상추의 발생특성과 관리방안

  • In-Yong Lee (School of Applied Science in Natural Resources & Environment, Hankyong National University) ;
  • Seung-Hwan Kim (School of Applied Science in Natural Resources & Environment, Hankyong National University) ;
  • Yong-Ho Lee (School of Applied Science in Natural Resources & Environment, Hankyong National University) ;
  • Sun-Hee Hong (School of Applied Science in Natural Resources & Environment, Hankyong National University)
  • 이인용 (국립한경대학교 식물자원조경학부) ;
  • 김승환 (국립한경대학교 식물자원조경학부) ;
  • 이용호 (국립한경대학교 식물자원조경학부) ;
  • 홍선희 (국립한경대학교 식물자원조경학부)
  • Received : 2022.06.11
  • Accepted : 2022.07.18
  • Published : 2022.09.30
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Abstract

Lactuca scariola L. is one of ecosystem-disturbance plants that grow everywhere such as roadsides, grasslands, railroads, banks, and fields. L. scariola usually occurs in autumn. It overwinters in rosette form. It flowers and produces seeds in early summer of the next year. Seeds of L. scariola can germinate immediately without dormancy when the temperature is over 20℃. Due to endogenous bacteria in seeds of L. scariola, it has a strong drought tolerance. Thus, it can grow well on roadsides. L. scariola should be controlled as it can result in 60-80% of soybean yield loss at densities above 50 plants m-2. It is advisable to remove L. scariola as it competes with native plants by acting as a pioneer to other ecosystem-disturbance plants. Among various control methods, chemical control is the most effective method that is widely used. Soil treatment with herbicides such as oxyfluorfen EC and pendimethalin EC can inhibit the development of L. scariola. Foliar treatment herbicides glyphosate and glufosinateammonium are widely used. L. scariola is resistant to 2,4-D, dicamba, and MCPA among foliar treatment herbicides. Thus, it is recommended to apply herbicides with different modes of action.

가시상추는 도로변, 초지, 철도변, 주택가, 밭둑 등 도처에서 생육하는 생태계교란식물 중의 하나이다. 가시상추는 일반적으로 가을에 발생하여 로제트 형태로 월동하고 이듬해 초여름에 꽃을 피고 종자를 맺는다. 가시상추의 종자는 20℃ 이상만 되면 휴면성이 없이 즉시 발아할 수 있다. 가시상추 종자 속의 내생세균에 의해 가뭄 견딤성이 강해 도로변에서도 잘 생육할 수 있다. 가시상추는 50주 m-2이상의 밀도에서 콩 수확량의 60~80% 손실을 일으킬 뿐만 아니라, 다른 생태계교란식물의 선구자 역할을 하여 토착식물과 경쟁하기 때문에 제거하는 것이 좋다. 여러 가지 방제방법 중 화학적 방제법이 가장 효과적이고 널리 사용되고 있다. 토양처리제인 oxyfluorfen와 pendimethalin 등이 가시상추의 발생을 억제하였다. 경엽처리제는 glyphosate, glufosinate-ammonium이 많이 사용되고 있다. 경엽처리제 중 2,4-D, dicamba, MCPA 등에 저항성을 보이는 가시상추가 발생하였기에 작용점이 다른 제초제 살포를 권장하고 있다.

Keywords

Acknowledgement

본 연구는 환경부 연구프로젝트(프로젝트 번호: 2021002270004) 예산 지원으로 수행하였습니다.

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