Referencing Water Content Effects on Soil Electrical Conductivity—Salinity Calibrations

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Abstract
The effects of hysteresis on soil electrical conductivity (σa), matric potential (ψm), and σa‐volumetric water content (Θ) relations were evaluated for two matrix materials using laboratory column techniques. These σa‐Θ relations were found to be little dependent on whether changes in soil moisture occurred by drying or wetting. In contrast, σa‐Ψm relations displayed a strong hysteresis effect. It is concluded that Θ is a simpler and more accurate parameter to use for adjusting for soil moisture status when determining soil salinity from measurements of σa.
Funding Information
  • French Ministère des Affaires Etrangères