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https://hdl.handle.net/2440/27332
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Type: | Journal article |
Title: | Effects of latex and poly-DADMAC on erosion, hydrophobicity and water retention on two different soils |
Author: | Bernas, S. Oades, J. Churchman, G. |
Citation: | Soil Research, 1995; 33(5):805-816 |
Publisher: | CSIRO |
Issue Date: | 1995 |
ISSN: | 0004-9573 |
Statement of Responsibility: | S. M. Bernas J. M. Oades and G. J. Churchman |
Abstract: | <jats:p> Latex (natural polymer) and poly-DADMAC (synthetic polymer) were applied to a red brown earth (Alfisol) and a Wiesenboden (Mollisol). Run-off, infiltration, sediment loss and water stable aggregates were measured after subjecting the soils to simulated rainfall. Water retention of latex and poly-DADMAC amended soils was determined. The MED test for hydrophobicity was also carried out for the latex-treated soil. Latex decreased run-off and erosion, and increased infiltration on both soils. Poly-DADMAC minimized run-off and erosion, and increased infiltration on the Wiesenboden. It increased run-off and decreased infiltration on the red-brown earth; however, it still decreased erosion. Latex increased the percentage of water-stable aggregates > 2 mm on the red-brown earth, but it had less effect on the Wiesenboden. Poly-DADMAC decreased the percentage of water-stable aggregates < 0.125 mm on both soils after simulated rainfall. Both latex and poly-DADMAC had little effect on water retention of the red-brown earth and the Wiesenboden. Application of 1.5 g kg-1 of latex increased MED values of both soils, to give values that indicate moderate water-repellence but should not affect plant growth. Generally, latex was more effective on the red-brown earth and poly-DADMAC was more effective on the Wiesenboden. It seems that latex can be effective on all soil types, but poly-DADMAC will have more effect on clay soils. </jats:p> |
Keywords: | polymers structural stability infiltration erosion water repellence |
Description: | Copyright © CSIRO 1995 |
DOI: | 10.1071/SR9950805 |
Published version: | http://dx.doi.org/10.1071/sr9950805 |
Appears in Collections: | Aurora harvest 6 Soil and Land Systems publications |
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