sodium adsorption ratio

{
  "id": "MLC-T-AGR-005900",
  "term": "sodium adsorption ratio",
  "field": "Agriculture and food",
  "definition": "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.",
  "subject": "Research, Technology, Methods",
  "see_also": [
    "measurement",
    "irrigation systems",
    "water quality",
    "hydraulic conductivity",
    "soil properties",
    "soil degradation"
  ],
  "references": [
    "United States Department of Agriculture, Natural Resources Conservation Service, Soil Survey Staff",
    "NAL Agricultural Thesaurus and Glossary"
  ],
  "translations": {
    "es": "razón de absorción de sodio"
  },
  "url": "https://mlchart.com/terminology/agriculture/sodium-adsorption-ratio/"
}