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Referencing Water Content Effects on Soil Electrical Conductivity—Salinity Calibrations
Author(s) -
Bottraud JeanChristophe,
Rhoades J. D.
Publication year - 1985
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1985.03615995004900060049x
Subject(s) - water content , soil science , hysteresis , salinity , electrical resistivity and conductivity , water potential , environmental science , soil salinity , wetting , soil water , geotechnical engineering , materials science , geology , composite material , physics , oceanography , quantum mechanics
The effects of hysteresis on soil electrical conductivity (σ a ), matric potential (ψ m ), and σ a ‐volumetric water content (Θ) relations were evaluated for two matrix materials using laboratory column techniques. These σ a ‐Θ relations were found to be little dependent on whether changes in soil moisture occurred by drying or wetting. In contrast, σ a ‐Ψ m 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 σ a .