exchangeable bases


What is exchangeable bases?

exchangeable bases meaning in Soil Science terminology / glossary / dictionary is:
Charge sites on the surface of soil particles that can be readily replaces with a salt solution. In most soils, Ca2+, Mg2+, K+ and Na+ predominate. Historically, these are called bases because they are cations of strong bases. Many soil chemists object to this term because these cations are not bases by any modern definition of the term. See also base saturation and exchangeable cation.


reference: Soil Science Society of America