Resumo

ARIAS, Fulvio et al. Relación entre la mineralogía de la fracción arcilla y la fertilidad en algunos suelos cultivados con banano en las llanuras aluviales del Caribe de Costa Rica. Agron. Costarricense [online]. 2010, vol.34, n.2, pp.223-236. ISSN 0377-9424.

Clay mineralogy and soil fertility of banana plantation alluvial soils at Costa Rica’s Caribbeanlowlands. This paper analyses  the relationship between soil clay mineralogy classes and soil fertility characteristics of soils cultivated with banana in the Caribbean lowlands of Costa Rica. The resultscorroborate that  some fertility properties are closely related to the amount and type of dominant clay ofthe soils;  among these characteristics the most relevant are CEC, phosphate retention and exchangeable cations. Soils belonging to the esmectitic clay mineralogy class showed greater values of CEC and exchangeable bases but lower phosphorus retention than soils of the metahalloysitic clay mineralogy class. Soil dominated by vermiculite showed lower amounts of available K and larger amounts of exchangeable Mg.

Palavras-chave : Clay mineralogy; alluvial soil; Caribbean lowlands; Costa Rica.

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