Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effects of Soil Texture and Bulk Density on the Least-Limiting Water Range

토성(土性)과 용적밀도(容積密度)가 최소생육제한수분범위(最小生育制限水分範圍)에 미치는 영향(影響)

  • Jo, In-Sang (National Institute of Agricultural Science and Technology, RDA) ;
  • Hyun, Byung-Keun (National Institute of Agricultural Science and Technology, RDA) ;
  • Cho, Hyun-Jun (National Institute of Agricultural Science and Technology, RDA) ;
  • Jang, Yong-Seon (National Institute of Agricultural Science and Technology, RDA) ;
  • Shin, Jae-Sung (National Institute of Agricultural Science and Technology, RDA)
  • 조인상 (농촌진흥청 농업과학기술원) ;
  • 현병근 (농촌진흥청 농업과학기술원) ;
  • 조현준 (농촌진흥청 농업과학기술원) ;
  • 장용선 (농촌진흥청 농업과학기술원) ;
  • 신제성 (농촌진흥청 농업과학기술원)
  • Published : 1997.03.30
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Abstract

Three soils, sandy loam, loam and silty clay loam, were selected and three inches soil cores with 4 bulk density(BD) levels were made by compressing the soils wetted with 3 levels water. Mechanical and water characteristics were measured and analyzed the mechanical resistance limiting water, available water and least-limiting water range. Mechanical resistance limiting water(MRLW) were appeared at higher bulk density than $1.6Mg/m^3$ in sandy loam, and $1.4Mg/m^3$ in loam and silty clay loam. The least-limiting water ranges were sharply decreased at the bulk density $1.6Mg/m^3$ in sandy loam and loam, $1.4Mg/m^3$ in silty clay loam. There were big deferences between available water contents and least limiting water ranges in finer texture and higher bulk density soils.

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