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Influence of Soil Structure on Water Relations in Low Humic Latosols: II. Water Movement
Author(s) -
Sharma M. L.,
Uehara G.
Publication year - 1968
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/sssaj1968.03615995003200060022x
Subject(s) - soil water , water flow , capillary action , chemistry , soil science , environmental science , materials science , composite material
Experiments were carried out to study the effect of two aspects of structure, macrofabric (arrangement of peds) and microfabric (arrangement of primary particles within the ped), on water movement. Two latosolic soils of nearly similar composition and varying greatly in soil fabric were used. Capillary conductivity of the soils and their water‐stable aggregates were obtained. The results showed that the effect of macrofabric on water movement was more pronounced in the lowtension range (0–0.2 bar). Identical flow rates were obtained for the same size water stable aggregates of both soils, suggesting that intra‐ped pores did not significantly contribute to water flow in this tension range. It was suggested, however, that microfabric might influence fluid flow properties in the high tension range.