Urea adsorption in some Trinidad soils

Subba M. Rao, Nazir Ahmad


The extent of urea adsorption in 19 different soil types in Trinidad were measured. Freundlich adsorption Isotherms were drawn based on adsorption data. Among the various soil characteristics statistically tested for their role in urea adsorption. CEC, organic carbon and clay content were found to be most significantly correlated with urea adsorption. This indirect evidence is in agreement with other results which have suggested an active role of soil organic matter and clay content in urea adsorption. The 19 Trinidad soils studied were placed in three categories, i.e. high, medium and low with respect to urea adsorption capacity.


Soils; Urea; Adsorption; Trinidad

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