Effects of interchangeable potassium on the permeability of a soil of Manfredi (Province of Córdoba) by Faedo, Stelio, Cerana, Luis

“…Aumenting the proportion of exchangeable potassium, increased the turbidity and coloration of the percolates, showing a marked effect of the cation on dispersion and migration of clay and humic colloids. On addition to the soil of 0,5 % calcium carbonate, the final percentage of exchangeable potassium was reduced to 3,6; in the permeability tests, all perco'ates were limpid and colourless. …”
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