Abstract
Abstract Phosphorus content and balance in granulometric fractions of old alluvial soil developed from alluvial deposits od Vistula River in middle Poland was studied. The distribution of phosphorus in particular granulometric fractions of the studied soil showed high quantitative variability vertically in the profile. This resulted from the layered structure of the Vistulian old alluvial formation developed throughout the Holocene. The contribution of grain fractions in phosphorus accumulation increased with a decrease in their diameter, and in certain fractions with a decrease in their quantitative state. Eluviation of phosphorus down the soil profile concerned in particular grain fraction <0.02 mm. Fractions with a larger diameters were not subject to the process. Phosphorus resources calculated from the grain fraction balance in the analysed soil amounted to an average of 1.7 kg·m2 to a depth of 200 cm.
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