Estudio del fósforo en suelos de América Central. V. Uso de resinas de intercambio para evaluar la disponibilidad de P

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dc.creatorPalma, G.
dc.creatorFASSBENDER, H.W.
dc.date2025-07-11T19:54:28Z
dc.date2025-07-11T19:54:28Z
dc.date1970-07
dc.date.accessioned2026-06-09T02:09:41Z
dc.descriptionThe objective of this study was to evaluate the use anion exchange resin (Dowex 21K) as an index of P availability in 40 soils of Central America. The following determinations were undertaken, according to Cooke: 1. Initially available -kinetic- P (shaken 2 to 30 minutes) 2. Equilibration -intensity- P (shaken 18 hours) 3. Reserve -capacity- P (five successive extractions) The kinetical criteria used to evaluate the dynamics of P during the first 30 minutes of contact of the soils with the resin indicated that P initially available is not a good index of measure the P absorbed by the plant. For a group of 40 soils considered, the correlation between P adsorbed by the resin during 18 hours equlibration and the P absorbed by the tomato plants was 0.930, the correlation between reserve P measured by five successive equilibrations and absorbed P by tha plants was 0.951. It was concluded that equilibration P and reserve P are the most significant parameters to evaluate that availability of P in the soils. Higher correlations obtained for the resin method as compared with other chemical procedures indicated that resin is better for the evaluation of P available in the soil.
dc.format9 páginas
dc.formatapplication/pdf
dc.identifierhttps://repositorio.catie.ac.cr/handle/11554/13261
dc.identifieropenAccess
dc.identifier.urihttp://hdl.handle.net/123456789/2964
dc.languagees
dc.publisherInstituto Interamericano de Cooperación para la Agricultura (IICA)
dc.relationTurrialba; Vol.20, no. 3
dc.subjectFósforo||phosphorus||Fósforo||phosphore
dc.subjectSuelo||soil||solo||sol
dc.subjectQuímica del suelo||soil chemistry||Química do solo||chimie du sol
dc.subjectAmérica Central||Central America||América Central||Amérique centrale
dc.subjectResina||resins||resina||résine
dc.subjectAnión||anions||anion||anion
dc.subjectEstado nutricional||nutritional status||estado da nutrição||état nutritionnel
dc.subjectSede Central
dc.titleEstudio del fósforo en suelos de América Central. V. Uso de resinas de intercambio para evaluar la disponibilidad de P
dc.typeArtículo

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