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WESSELING J
Soil Science: July 1974
Original Article: PDF Only
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ABSTRACTMeasurements of saturated and unsaturated hydraulic conductivities in 45- and 90-cm-long undisturbed Pachappa sandy loam columns showed that differences in saturated hydraulic conductivity from layer to layer in the profile remain present under unsaturated conditions. It was found that the same relation between relative conductivities and matric potentials can be used for every layer of the soil profile. Relative conductivities computed from moisture-retention curves determined for each 10-cm layer of the soil agree fairly well with measured data. It is concluded that relative conductivities for the whole of the soil profile can be derived from the average-moisture-retention values.

Measurements of saturated and unsaturated hydraulic conductivities in 45- and 90-cm-long undisturbed Pachappa sandy loam columns showed that differences in saturated hydraulic conductivity from layer to layer in the profile remain present under unsaturated conditions. It was found that the same relation between relative conductivities and matric potentials can be used for every layer of the soil profile. Relative conductivities computed from moisture-retention curves determined for each 10-cm layer of the soil agree fairly well with measured data. It is concluded that relative conductivities for the whole of the soil profile can be derived from the average-moisture-retention values.

© Williams & Wilkins 1974. All Rights Reserved.