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Consequences of soil crust formation on soil hydraulic properties and irrigation performance

Citation

Chamley, F and Hardie, M and Lambert, S and Doyle, R, Consequences of soil crust formation on soil hydraulic properties and irrigation performance, Proceedings of the 5th Joint Soil Science Australia and New Zealand Society of Soil Science Conference, 2-7 December 2012, Hobart, Tasmania, pp. 221-224. ISBN 978-0-646-59142-1 (2012) [Refereed Conference Paper]


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Copyright Statement

Copyright 2012 Australian Society of Soil Science Incorporated

Official URL: http://www.soilscience2012.com/

Abstract

Rainfall and irrigation resulted in the formation of severe surface soil crusts. Crust formation resulted in significantly higher bulk density and significantly lower hydraulic conductivity including loss of nearly all macroporosity in the surface soil layers. Crust formation was accompanied by resettlement of the cultivated beds which also resulted in significantly higher bulk density and significantly lower unsaturated hydraulic conductivity. Crust formation and bed resettling prevented irrigation wetting up the crop seed bed, and increased the proportion of irrigation lost by runoff from 0.5 % to 35 %. Inverse simulation of cumulative tension infiltration data enabled the soil water characteristic of the surface crust to be determined and the effect of crust formation on infiltration modelled in HYDRUS 2D.

Item Details

Item Type:Refereed Conference Paper
Keywords:crusting, hydraulic conductivity, irrigation efficiency, surface seal
Research Division:Environmental Sciences
Research Group:Soil Sciences
Research Field:Soil Physics
Objective Division:Environment
Objective Group:Land and Water Management
Objective Field:Land and Water Management of environments not elsewhere classified
Author:Chamley, F (Miss Frances Chamley)
Author:Hardie, M (Mr Marcus Hardie)
Author:Lambert, S (Dr Susan Lambert)
Author:Doyle, R (Dr Richard Doyle)
ID Code:77872
Year Published:2012
Deposited By:Agricultural Science
Deposited On:2012-06-02
Last Modified:2017-10-31
Downloads:5 View Download Statistics

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