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Effect of leaching on hydrophobicity and infiltration into a texture contrast soil

Citation

Hardie, M and Cotching, W and Doyle, R and Lisson, S, Effect of leaching on hydrophobicity and infiltration into a texture contrast soil, Proceedings of the 5th EUROSOIL International Congress, 17-22 July 2016, Istanbul, Turkey (In Press) [Refereed Conference Paper]


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Abstract

Water repellence in a texture contrast soil was found to be more strongly related to rainfall/leaching history, than the soil moisture content at the time of analysis. Field samples collected after prolonged rainfall had significantly lower water drop penetration time (WDPT) than samples collected after a prolonged period with minimal rainfall. A sequential leaching experiment also demonstrated that water repellence could be leached from the soil, and that water repellence did not return following drying. Infiltration experiments demonstrated that leaching of water repellent substances was sufficient to prevent the development of finger flow even when soils were air dried, however fingering was observed in both leached and non-leached soil when air flow at the base of the Helle-Shaw tank was prevented.

Item Details

Item Type:Refereed Conference Paper
Keywords:hydropedology, texture contrast soil, irrigation, duplex, preferential flow
Research Division:Environmental Sciences
Research Group:Soil Sciences
Research Field:Soil Sciences not elsewhere classified
Objective Division:Environment
Objective Group:Soils
Objective Field:Soils not elsewhere classified
Author:Hardie, M (Mr Marcus Hardie)
Author:Cotching, W (Dr Bill Cotching)
Author:Doyle, R (Dr Richard Doyle)
ID Code:109068
Year Published:In Press
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2016-05-18
Last Modified:2016-05-19
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