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Soil Moisture Evaluation by Tensiometers
Author(s) -
Perrier Eugene R.,
Evans D. D.
Publication year - 1961
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/sssaj1961.03615995002500030010x
Subject(s) - tensiometer (surface tension) , water content , soil science , moisture , hysteresis , environmental science , water potential , soil water , desorption , porosity , materials science , chemistry , geotechnical engineering , geology , composite material , thermodynamics , adsorption , surface tension , physics , organic chemistry , quantum mechanics
Four different types of tensiometers were compared and found to be quite similar within their range of measurement. Only a slight difference in range was found between the instruments. Moisture desorption curves obtained by plotting tensiometer readings versus soil water content as obtained by sampling were different from those obtained by the porous plate apparatus using cores or disturbed samples. The differences are associated with structural changes resulting from the procesures used in the porous plate technique. The moisture desorption curves obtained with the tensiometers should be reliable if time lag and hysteresis effects are small.