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Variability of Hydraulic Conductivity in Two Subsurface Horizons of Two Silt Loam Soils
Author(s) -
Baker F. G.,
Bouma J.
Publication year - 1976
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/sssaj1976.03615995004000020011x
Subject(s) - loam , hydraulic conductivity , soil water , loess , silt , geology , soil science , soil series , soil classification , geomorphology
Hydraulic conductivity was measured in the B22t and B31t horizons of 12 pedons of two soils developed in loess deposits overlying glacial till. Conductivity measurements were made with the crust test technique for unsaturated conditions and with a new related in situ method for saturated conditions. Nonlinear regression yielded simple well‐fitting curves of the form log K = log( b ψ ‐ c ). Variability within and between major horizons in these soil series was found to be relatively low. The four horizons in these two silt loam soils had statistically identical hydraulic conductivity characteristics, even though morphological soil structure and soil genesis differed significantly.