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| Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/48/1/SS0480010050
Last checked: 12/07/2016
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| Publication Type:
| Refereed |
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| Author(s): | Suarez, D. L.;
Rhoades, J. D.;
Lavado, R.;
Grieve, C. M. |
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| Author Affiliation: | Suarez: Geochemist; Rhoades and Lavado: Soil Scientists; and Grieve: Plant Physiologist |
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| Title: | Effect of pH on saturated hydraulic conductivity and soil dispersion |
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| Source: | Soil Science Society of America Journal. Vol. 48, No. 1, 1984, p. 50-55. |
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| Publishing Information: | Madison, WI: Soil Science Society of America |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: pH; Saturated hydraulic conductivity; Dispersion; Exchangeable sodium; Irrigation water; Water quality; Soil types; Sodic soils; Clay; Comparisons; Arid climate; Sodium Adsorption Ratio; Electrolytes; Physical properties of soil; Particle size; Chemical properties of soil; Anion exchange; Adsorption; Cation exchange; Anions; Cations
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| Abstract/Contents: | "The adverse effects of exchangeable sodium on soil hydraulic conductivity (K) are well known, but at present only sodicity and total electrolyte concentration are used in evaluating irrigation water suitability. In arid areas, high sodicity is often associated with high dissolved carbonate and thus high pH, but in humid areas high sodicity may be assoicated with low pH. To evaluate the effect of pH (as an independent variable) on K, solutions with the same SAR and electrolyte level were prepared at pH 6, 7, 8 and 9. Saturated K values were determined at constant flux in columns packed at a bulk density of 1.5 Mg m-3. At pH 9, saturated K values were lower than at pH 6 for a montmorillonitic and a kaolinitic soil. For a vermiculitic soil with lower organic carbon and higher silt content, pH changes did not cause large K differences. Decreases in K were not reversible on application of waters with higher electrolyte levels. The results from the K experiments were generally consistent with optical transmission measurements of dispersion. Although anion adsorption was at or below detection limits and cation exchange capacity (CEC) was only slightly dependent on pH, differences in pH effects on K among soils are likely due to differences in quantitites of variable-charge minerals and organic matter." |
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| Language: | English |
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| References: | 20 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Suarez, D. L., J. D. Rhoades, R. Lavado, and C. M. Grieve. 1984. Effect of pH on saturated hydraulic conductivity and soil dispersion. Soil Sci. Soc. Am. J. 48(1):p. 50-55. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/sssaj/pdfs/48/1/SS0480010050
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 590 .S65 |
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