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Determination of Soil Solution Electrical Conductivity from Bulk Soil Electrical Conductivity Measurements by the Four‐Electrode Method
Author(s) -
Nadler A.,
Frenkel H.
Publication year - 1980
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/sssaj1980.03615995004400060017x
Subject(s) - electrical resistivity and conductivity , conductance , conductivity , soil science , analytical chemistry (journal) , electrode , materials science , water content , surface conductivity , electrical resistance and conductance , chemistry , environmental science , environmental chemistry , composite material , geology , geotechnical engineering , physics , condensed matter physics , quantum mechanics
Soil electrical conductivity (EC a ) by the four electrode method was studied in the laboratory as a function of soil water electrical conductivity (EC w ) and water content in six soil types. A linear relationship between EC a and EC w was valid only at salinities > 4 mmho/cm. At very low salinity levels the contribution of the surface conductance was not constant and had a higher contribution than EC w to measured EC a . A method for calculating the partial contribution of surface conductance to EC a as a function of EC w and clay content is applied including a correction for dependence on the soil water content.