Potassium in winery waste waters used for irrigation and soil structural decline
Paper
Paper/Presentation Title | Potassium in winery waste waters used for irrigation and soil structural decline |
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Presentation Type | Paper |
Authors | Rengasamy, Pichu (Author) and Marchuk, Alla (Author) |
Journal or Proceedings Title | 22nd Grape and Wine Science Symposium (Crush 2011) |
Year | 2011 |
Web Address (URL) of Paper | http://www.wineinnovationcluster.com/ |
Conference/Event | 22nd Grape and Wine Science Symposium (Crush 2011) |
Event Details | 22nd Grape and Wine Science Symposium (Crush 2011) Event Date 28 to end of 30 Sep 2011 Event Location Adelaide, Australia |
Abstract | Long-term application of winery waste water containing high levels of potassium will lead to build-up of exchangeable potassium in soils which can cause soil structural problems similar to exchangeable sodium. Conflicting reports on the effect of exchangeable potassium, being either equal to or less than that of sodium, are found in the literature. We investigated the dispersive and flocculating powers of cations viz. Na, K, Mg and Ca on the basis of our concept that the degree of ionicity (or covalency) of clay-cation bonds determine the dispersion and flocculation of soil clays. Our experimental results were in conformity with the theoretical values of flocculating powers of cations. Compared to Na=1, the flocculating power of the other common cations would be K=1.8, Mg=27, and Ca=45. Flocculating power gives the inverse of dispersive effects. Based on these notions, a ratio analogous to the SAR (sodium adsorption ratio), but which incorporates the differential effects of Na and K in dispersing soil clays, and also the differential effects of Ca and Mg in flocculating soil clays was derived as: |
Keywords | irrigation runoff; potassium; wine growing; effects on soil |
ANZSRC Field of Research 2020 | 400499. Chemical engineering not elsewhere classified |
300201. Agricultural hydrology | |
410601. Land capability and soil productivity | |
Public Notes | Copyright 2011 for the content of these abstracts and the full papers presented at the Symposium remains with the authors. |
Byline Affiliations | University of Adelaide |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2976/potassium-in-winery-waste-waters-used-for-irrigation-and-soil-structural-decline
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