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Effects of Soil Moisture Condition and Shading on Growth of Invasive Plant Burcucumber (Sicyos angulatus L.)

토양 수분과 차광이 외래식물 가시박의 생육에 미치는 영향

  • Oh, Dagyeom (Department of Agronomy, Gyeongsang National University) ;
  • Shim, Doobo (Department of Agronomy, Gyeongsang National University) ;
  • Song, Sonhwa (Department of Agronomy, Gyeongsang National University) ;
  • Oh, Jihyun (Department of Agronomy, Gyeongsang National University) ;
  • Hong, Sunhee (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Shim, Sangin (Department of Agronomy, Gyeongsang National University)
  • 오다겸 (국립경상대학교 농업생명과학대학 농학과) ;
  • 심두보 (국립경상대학교 농업생명과학대학 농학과) ;
  • 송선화 (국립경상대학교 농업생명과학대학 농학과) ;
  • 오지현 (국립경상대학교 농업생명과학대학 농학과) ;
  • 홍선희 (고려대학교 환경생태공학부) ;
  • 심상인 (국립경상대학교 농업생명과학대학 농학과)
  • Received : 2015.09.12
  • Accepted : 2015.12.08
  • Published : 2015.12.30

Abstract

Burcucumber (Sicyos angulatus) is an annual invasive plant species originated from North America. This species grows by twining around tree trunks, and blocks other plants from photosynthesis. Thus, it has caused the destruction of the ecosystem and biological diversity by threatening native plants. This study was performed to find out the effect of different soil water content (20%, 13%, 10%, 3%) and various shading degrees (0%, 60%, 80%) on the growth and photosynthesis-related activity of burcucumber. In the responses of burcucumber to soil water content, plant height (PH), leaf length (LL), leaf width (LW) and photosynthetic efficiency (PE) were lower at 20% water content than 10% reflecting that burcucumber plant grow well in the less dry soil and shows poor growth under wet soil condition. In shading experiment, PH, LL, LW and PE were lower at 80% than 60% shading and in general, the growth characteristics were lowered as the shading intensity increased. The improved growth of burcucumber under highly or moderately shaded condition implies that the plant can grow well without growth retardation and can be adapted to shading condition with other tall plant species including tree. Further study on the combination effects of above factors should be conducted in future for effective ecological control of burcucumber.

Acknowledgement

Supported by : Korea Environmental Industry and Technology Institute (KEITI)

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