Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions
The chemical characteristics of two soil types, an Alfisol and an Ultisol, were studied in the humid tropical zone of southern Nigeria. The objective was to investigate the contribution of soil organic matter (SOM) to nutrient retention characteristics and identify those SOM pools that contribute mo...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2004
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| Acceso en línea: | https://hdl.handle.net/10568/41062 |
| _version_ | 1855536507757002752 |
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| author | Cofie, Olufunke O. Pleysier, J. |
| author_browse | Cofie, Olufunke O. Pleysier, J. |
| author_facet | Cofie, Olufunke O. Pleysier, J. |
| author_sort | Cofie, Olufunke O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The chemical characteristics of two soil types, an Alfisol and an Ultisol, were studied in the humid tropical zone of southern Nigeria. The objective was to investigate the contribution of soil organic matter (SOM) to nutrient retention characteristics and identify those SOM pools that contribute most to the ion exchange properties of the soils. Ion exchange studies involving K-Ca and Mg-Ca systems in whole soil, organic fraction (53-250 mm) and clay fraction (<2 mm ) showed a preference for Ca relative to K in the soil and organic fraction. For the clay fraction in Alfisol, the isotherm in K-Ca system suggested a preference for K at low K saturation, but from about 50% K saturation, the isotherm inferred a preference for Ca. However, the overall selectivity at constant temperature and pressure as expressed by Gibb's free energy change suggested a stronger binding of K than Ca by the fraction. |
| format | Journal Article |
| id | CGSpace41062 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2004 |
| publishDateRange | 2004 |
| publishDateSort | 2004 |
| record_format | dspace |
| spelling | CGSpace410622023-06-12T21:21:56Z Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions Cofie, Olufunke O. Pleysier, J. ion exchange soil properties soil organic matter clay fractionation calcium magnesium potassium The chemical characteristics of two soil types, an Alfisol and an Ultisol, were studied in the humid tropical zone of southern Nigeria. The objective was to investigate the contribution of soil organic matter (SOM) to nutrient retention characteristics and identify those SOM pools that contribute most to the ion exchange properties of the soils. Ion exchange studies involving K-Ca and Mg-Ca systems in whole soil, organic fraction (53-250 mm) and clay fraction (<2 mm ) showed a preference for Ca relative to K in the soil and organic fraction. For the clay fraction in Alfisol, the isotherm in K-Ca system suggested a preference for K at low K saturation, but from about 50% K saturation, the isotherm inferred a preference for Ca. However, the overall selectivity at constant temperature and pressure as expressed by Gibb's free energy change suggested a stronger binding of K than Ca by the fraction. 2004 2014-06-13T14:49:08Z 2014-06-13T14:49:08Z Journal Article https://hdl.handle.net/10568/41062 en Limited Access Cofie, Olufunke; Pleysier, J. 2004. Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions. Communications in Soil Science and Plant Analysis, 35(17-18):2417-2431. |
| spellingShingle | ion exchange soil properties soil organic matter clay fractionation calcium magnesium potassium Cofie, Olufunke O. Pleysier, J. Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions |
| title | Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions |
| title_full | Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions |
| title_fullStr | Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions |
| title_full_unstemmed | Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions |
| title_short | Ion exchange involving calcium-potasium (Ca-K) and calcium-magnesium (Ca-Mg) in soil and organic matter fractions |
| title_sort | ion exchange involving calcium potasium ca k and calcium magnesium ca mg in soil and organic matter fractions |
| topic | ion exchange soil properties soil organic matter clay fractionation calcium magnesium potassium |
| url | https://hdl.handle.net/10568/41062 |
| work_keys_str_mv | AT cofieolufunkeo ionexchangeinvolvingcalciumpotasiumcakandcalciummagnesiumcamginsoilandorganicmatterfractions AT pleysierj ionexchangeinvolvingcalciumpotasiumcakandcalciummagnesiumcamginsoilandorganicmatterfractions |