Extraction of potassium from some kaolinitic soils of the tropics
Three methods for soil potassium extraction (M NH4OAc pH 7, 0.01 M AgTU and 30 % hot H2SO4) were compared for a variety of kaolinitic soils of the tropics. The AgTU‐extractable K was much higher than the M NH4OAc‐extractable K when vermiculite clay was present in the soil. The correlation between bo...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
1988
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| Acceso en línea: | https://hdl.handle.net/10568/177170 |
| _version_ | 1855534569030156288 |
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| author | Pleysier, J.L. Janssens, J. Cremers, A. |
| author_browse | Cremers, A. Janssens, J. Pleysier, J.L. |
| author_facet | Pleysier, J.L. Janssens, J. Cremers, A. |
| author_sort | Pleysier, J.L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Three methods for soil potassium extraction (M NH4OAc pH 7, 0.01 M AgTU and 30 % hot H2SO4) were compared for a variety of kaolinitic soils of the tropics. The AgTU‐extractable K was much higher than the M NH4OAc‐extractable K when vermiculite clay was present in the soil. The correlation between both was given by an R value of 0.937. The amounts of K extracted by 0.01 M AgTU and by hot H2SO4 were approximately the same. The R value for these two methods was 0.843.
It is suggested that the AgTU extractant could be used for determination of plant‐available K in soil and for testing for the presence or absence of vermiculite clay in soils. |
| format | Journal Article |
| id | CGSpace177170 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1988 |
| publishDateRange | 1988 |
| publishDateSort | 1988 |
| record_format | dspace |
| spelling | CGSpace1771702025-11-11T10:40:40Z Extraction of potassium from some kaolinitic soils of the tropics Pleysier, J.L. Janssens, J. Cremers, A. potassium tropics clay soils soils tropical soils Three methods for soil potassium extraction (M NH4OAc pH 7, 0.01 M AgTU and 30 % hot H2SO4) were compared for a variety of kaolinitic soils of the tropics. The AgTU‐extractable K was much higher than the M NH4OAc‐extractable K when vermiculite clay was present in the soil. The correlation between both was given by an R value of 0.937. The amounts of K extracted by 0.01 M AgTU and by hot H2SO4 were approximately the same. The R value for these two methods was 0.843. It is suggested that the AgTU extractant could be used for determination of plant‐available K in soil and for testing for the presence or absence of vermiculite clay in soils. 1988 2025-10-16T13:25:24Z 2025-10-16T13:25:24Z Journal Article https://hdl.handle.net/10568/177170 en Limited Access application/pdf Pleysier, J. L., Janssens, J., & Cremers, A. (1988). Extraction of potassium from some kaolinitic soils of the tropics. Communications in Soil Science and Plant Analysis, 19, (1), 69-77. |
| spellingShingle | potassium tropics clay soils soils tropical soils Pleysier, J.L. Janssens, J. Cremers, A. Extraction of potassium from some kaolinitic soils of the tropics |
| title | Extraction of potassium from some kaolinitic soils of the tropics |
| title_full | Extraction of potassium from some kaolinitic soils of the tropics |
| title_fullStr | Extraction of potassium from some kaolinitic soils of the tropics |
| title_full_unstemmed | Extraction of potassium from some kaolinitic soils of the tropics |
| title_short | Extraction of potassium from some kaolinitic soils of the tropics |
| title_sort | extraction of potassium from some kaolinitic soils of the tropics |
| topic | potassium tropics clay soils soils tropical soils |
| url | https://hdl.handle.net/10568/177170 |
| work_keys_str_mv | AT pleysierjl extractionofpotassiumfromsomekaoliniticsoilsofthetropics AT janssensj extractionofpotassiumfromsomekaoliniticsoilsofthetropics AT cremersa extractionofpotassiumfromsomekaoliniticsoilsofthetropics |