Sodium Adsorption Ratio
|Category|| : ||Academic & Science » Chemistry
|Country/Region|| : ||Worldwide
|Popularity|| : ||
What does SAR mean?
Sodium Adsorption Ratio (SAR) is an irrigation water quality parameter used in the management of sodium-affected soils. It is a ratio of the sodium (detrimental element) to the combination of calcium and magnesium (beneficial elements) in relation to known effects on soil dispersibility.
SAR is a measure of the amount of sodium (Na+) relative to calcium (Ca2+) and magnesium (Mg2+) in the water extracted from a saturated soil paste. It is also used as an indicator used to identify salinity of the soil.