The soil specific nature of threshold electrolyte concentration analysis
Paper
Paper/Presentation Title | The soil specific nature of threshold electrolyte concentration analysis |
---|---|
Presentation Type | Paper |
Authors | Bennett, J. McL. (Author) and Raine, S. R. (Author) |
Editors | Birkett, L. L. and Sparrow, L. A. |
Journal or Proceedings Title | Proceedings of the 5th Joint Australian and New Zealand Soil Science Conference (SSA 2012) |
ERA Conference ID | 50979 |
Number of Pages | 4 |
Year | 2012 |
Place of Publication | Hobart, Australia |
ISBN | 9780646591421 |
Web Address (URL) of Paper | http://www.soilscience2012.com |
Conference/Event | 5th Joint Australian and New Zealand Soil Science Conference (SSA 2012): Soil Solutions for Diverse Landscapes |
Joint Australian and New Zealand Soil Science Conference | |
Event Details | 5th Joint Australian and New Zealand Soil Science Conference (SSA 2012): Soil Solutions for Diverse Landscapes Parent Joint Australian and New Zealand Soil Science Conference Event Date 02 to end of 07 Dec 2012 Event Location Hobart, Australia |
Event Details | Joint Australian and New Zealand Soil Science Conference |
Abstract | Maintenance of soil permeability is paramount to irrigation, especially as the use of saline-sodic waters increase. While research has shown that, soil permeability can be maintained under high sodicity conditions, provided the electrolyte concentration is sufficiently high, there is relatively little information depicting threshold electrolyte concentrations (TEC) relationships. Furthermore, even though TEC curves have been shown to be soil specific and dependent on soil properties such as clay mineralogy, clay content and organic matter content, guidelines for irrigation management in Australia do not currently acknowledge this. The work reported in this paper provides examples of TEC relationships for a range of soils from southern Queensland. Through correlation analysis, the work also investigates the role of clay content, mineralogy and organic matter in determining these relationships. Calculation of TEC curves for 6 south-eastern Queensland soils illustrated that TEC relationships are soil specific, even within soil orders; contrary to current guidelines. Additionally, correlation analysis revealed that there were no apparent relationships between the critical EC and SAR values (those determining TEC functions) and soil properties such as clay mineralogy, clay content and organic matter content. |
Keywords | water resources; irrigation; chemicals in water |
ANZSRC Field of Research 2020 | 410604. Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) |
410605. Soil physics | |
300201. Agricultural hydrology | |
Public Notes | This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. |
Byline Affiliations | National Centre for Engineering in Agriculture |
Faculty of Engineering and Surveying | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q18y5/the-soil-specific-nature-of-threshold-electrolyte-concentration-analysis
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