Retención y solubilización de 32P en suelos ácidos de regiones tropicales
The solubility of P retained by two acid soils of tropical regions was studied. Total amount of P retained from a solution of 100 ppm of P was higher for Cervantes soil (Vitrandept) as compared to Colorado soil (Distropept). Fractionation studies indicated the predominance of Al-P in both soils, but...
| Main Authors: | , |
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| Format: | Artículo |
| Language: | Español |
| Published: |
Instituto Interamericano de Cooperación para la Agricultura (IICA)
2025
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| Subjects: | |
| Online Access: | https://repositorio.catie.ac.cr/handle/11554/13223 |
| Summary: | The solubility of P retained by two acid soils of tropical regions was studied. Total amount of P retained from a solution of 100 ppm of P was higher for Cervantes soil (Vitrandept) as compared to Colorado soil (Distropept). Fractionation studies indicated the predominance of Al-P in both soils, but there was predominance of Ca-P over Fe-P in the case of Cervantes. Desorption carried out with different extractants indicated that Cervantes released more P in Bray and Mehlich extracts as compared to Colorado soil. In the case of an andosol such as Cervantes the dissolution of amorphous materials by acid extractants brings together a higher dissolution of P. Fractionation of P after successive desorption indicated differential dissolution of different P fractions retained initially by the soil |
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