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NALT Concept Space
U.S. Department of Agriculture

NALT Full

Concept information

  1. Research, Technology, Methods
  2. methodology
  3. metrology
  4. measurement
  5. sodium adsorption ratio

Preferred term

sodium adsorption ratio

Type

  • Topic

Definition

  • Information Sodium adsorption ratio is a measure of the amount of sodium (Na) relative to calcium (Ca) and magnesium (Mg) in the water extract from saturated soil paste. It is the ratio of the Na concentration divided by the square root of one-half of the Ca + Mg concentration. Soils that have SAR values of 13 or more may be characterized by an increased dispersion of organic matter and clay particles, reduced saturated hydraulic conductivity (Ksat) and aeration, and a general degradation of soil structure.

    Source: United States Department of Agriculture, Natural Resources Conservation Service, Soil Survey Staff

    Type: Concept definition

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URI

https://lod.nal.usda.gov/nalt/333471

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RDF/XML TURTLE JSON-LD Created 8/30/19, last modified 11/25/19