Scaling the saturated hydraulic conductivity of an Alfisol

Bonsu, M and Laryea, K B (1989) Scaling the saturated hydraulic conductivity of an Alfisol. Journal of Soil Science, 40 (4). pp. 731-742. ISSN 0022-4588

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Abstract

Alfisols exhibit a high degree of spatial variability in their physical properties. As a result, it is difficult to use information on physical parameters measured at one location to model larger-scale hydrologic processes. In this study, the saturated hydraulic conductivity, Ks, of an Alfisol was determined on 109 undisturbed monoliths using the falling-head permeameter method. The model developed by Arya & Paris (Soil Science Society of America Journal 45, 1023-1030, 1981) was used to calculate the pore volume from sand and clay fractions. Scaling factors were calculated from the measured Ks, sand pore-volume, clay pore-volume, clay content and effective porosity, using the similar media concept. Prediction of Ks of gravelly Alfisol using clay pore-volume is confounded by high gravel content which, when discounted, improves the prediction remarkably. The scaled mean saturated hydraulic conductivity K* for all horizons of the alfisol was approximately 1.0 × 10-5 m s-1

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Others > Soil Science
Others > Agriculture-Farming, Production, Technology, Economics
Depositing User: Mr B K Murthy
Date Deposited: 01 Apr 2014 10:56
Last Modified: 01 Apr 2014 10:56
URI: http://oar.icrisat.org/id/eprint/7725
Official URL: http://dx.doi.org/10.1111/j.1365-2389.1989.tb01313...
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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