Growth of Creeping Bentgrass on Bottom Ash and Dredged up Sand with Four Organic Matter Amendment Rates Under Saline Irrigation Condition

염해 조건에서 유기물이 첨가된 준설모래와 석탄회 토양이 크리핑 벤트그래스의 생육에 미치는 영향

  • Rahayu, Rahayu (Dept. of Agrotechnology, Sebelas Maret National University) ;
  • Yang, Geun-Mo (Dept. of Green Landscape Science, Dankook University) ;
  • Choi, Joon-Soo (Dept. of Green Landscape Science, Dankook University)
  • 라하유 (세블라스마렛국립대학 농업과학과) ;
  • 양근모 (단국대학교 녹지조경학과) ;
  • 최준수 (단국대학교 녹지조경학과)
  • Received : 2009.09.22
  • Accepted : 2009.11.20
  • Published : 2009.12.31

Abstract

This study was carried out to check the possibility of substituting bottom ash from the Seosan power plant for sand as growing media for creeping bentgrass (Agrostis stolonifera L.) under saline irrigation condition. Characteristics of growing media were evaluated by using column and leaching method. Creeping bentgrass cv. Pen-A1 was grown in pots with dredged up sand (DS) and bottom ash (BA) media those were amended using 1%, 2%, and 3 % OM rates in a green house. The plants were irrigated with 1.5 $dSm^{-1}$ saline water. Results showed that visual quality, plant height and shoot dry weight from DS treatment were higher than those of BA treatment. Even though BA contained more salts, repeated leaching could decrease ECe efficiently. In case of no OM amendment, the visual quality, plant height and shoot dry weight were similar between in BA and DS. Amendment of 2% OM increased the height of creeping bentgrass in DS, while decreased the plant growth in BA.

본 실험은 서산 부남호 준설모래와 태안 화력 발전소에서 발생된 석탄회(Bottom ash) 토양이 염해 조건에서 크리핑 벤트그래스의 생육배지로서의 활용 가능성에 대한 평가를 해보고자 수행되었다. 준설모래와 석탄회 토양의 물리, 화학적 특성을 실험실에서 조사하였으며, 각 토양에 유기물(peat)을 0, 1, 2, 3% 비율(w/w)로 각각 혼합한 토양에서 크리핑 벤트그래스 Pen-A1 품종을 파종 후 염이 포함된 물(EC=$1.5dSm^{-1}$)을 관수하며 생육을 평가하였다. 유기물 혼합전 준설 모래의 ECe가 $1.4dSm^{-1}$로 나타나, 석탄회 $8.4dSm^{-1}$에 비해 낮게 나타났다. 가시적 품질, 초장, 줄기 건물중 등은 준설모래 처리구에 비해 석탄회 처리구에서 낮게 나타났다. 석탄회 토양은 염분을 보유하고 있었으나, 관수로 인한 세척시 염분이 용탈되는 것을 확인할 수 있었다. 유기물을 혼합하지 않은 경우는 준설모래와 석탄회 토양에서 가시적 품질, 초장, 건물중이 처리 간에 차이를 보이지 않았으나, 2% 유기물을 혼합한 경우 준설모래 처리구가 석탄회 처리구에 비해 초장이 높게 조사되었다.

Keywords

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