Premium
Calculating the Depths of Soil Moisture Control Sections from Laboratory Data
Author(s) -
Zobeck T. M.,
Daugherty L. A.
Publication year - 1982
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/sssaj1982.03615995004600040026x
Subject(s) - water content , moisture , soil water , soil science , bar (unit) , environmental science , hydrology (agriculture) , bulk density , geology , geotechnical engineering , materials science , composite material , oceanography
Calculations of the upper and lower boundaries of a soil moisture control section are illustrated using only the depth, bulk density, and saturated, −1/3, and/or −15 bar water contents, and amount of coarse fragments of the soil horizons. It is recommended that the difference between the −50 to −100 cm and −15 bar water contents be used for determining and defining the soil moisture control section in medium to fine‐textured soils. Both moisture contents are reasonable approximations of physically or biologically significant moisture levels and easily determined in the laboratory. The definition would then correspond to the familiar available water‐holding capacity (AWC) value currently in use.