Impacts of sodic soil amelioration on hydraulic conductivity and deep drainage in the Lower Burdekin

Reading, Lucy, Lockington, David, Bristow, Keith, & Baumgartl, Thomas (2010) Impacts of sodic soil amelioration on hydraulic conductivity and deep drainage in the Lower Burdekin. In Australian Irrigation Conference and Exhibition "One Water Many Futures", 8-10 June 2010, Sydney, N.S.W. (Unpublished)


An understanding of the influence of soil chemistry on soil hydraulic properties is of critical importance for the management of sodic soils under irrigation. The hydraulic conductivity of sodic soils has been shown to be affected by properties of the applied solution including pH (Suarez et al. 1984), sodicity and salt concentration (McNeal and Coleman 1966). The changes in soil hydraulic conductivity are the result of changes in the spacing between clay layers in response to changes in soil solution chemistry. While the importance o f soil chemistry in controlling hydraulic conductivity is known, the exact impacts of sodic soil amelioration on hydraulic conductivity and deep drainage at a given location are difficult to predict. This is because the relationships between soil chemical factors and hydraulic conductivity are soil specific and because local site specific factors also need to be considered to determine the actual impacts on deep drainage rates.

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ID Code: 87043
Item Type: Conference Paper
Refereed: Yes
Keywords: sodic soil, hydraulic conductivity, deep drainage
Subjects: Australian and New Zealand Standard Research Classification > AGRICULTURAL AND VETERINARY SCIENCES (070000) > OTHER AGRICULTURAL AND VETERINARY SCIENCES (079900) > Agricultural Hydrology (Drainage Flooding Irrigation Quality etc) (079901)
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2010 The Author(s)
Deposited On: 29 Sep 2015 23:08
Last Modified: 29 Sep 2015 23:08

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