Does anyone know about magnesium specific sites present in the soil clay-sized fraction particularly in the tropical soils?

08 August 2014 1 7K Report

I constructed Mg buffering capacity curves for different types of tropical soils and found that these soils prefer Mg than K. I want to explain why is that.

Dilip Kumar Pal

This may happen when soils contain low charge smectite that has no K selectivity. The information of soils with regard to the CEC of soils and clays may throw some light on the composition of clay minerals. Please check also the % of K saturation of the soil CEC. If it is too low that indicates soils have negligible vermiculite,which is the only K fixer in soils.

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