The quantitative estimate of biovailable inorganic phosphorus content in forest soils by the modification of the anion-exchange resin method
2006
Rejsek, K.
The anion-exchange resin (AER) method for the estimation of bioavailable P was slightly optimised for soils with high contents of readily soluble organic compounds as well as for those having very different clay and sand contents. A slightly modified AER method was still more improved by the usage of polyester-netting bags of resin and compared with the original method. The improved method was used to describe seasonal variations of P concentrations in different soil types. Concentrations of bioavailable P compounds were considerably affected by the season, soil type and soil layer. The highest values were found in autumn, the lowest ones in summer. The P concentration in winter was generally higher than in spring except for Gleyic Regosol. Gleyic Regosol, Haplic Gleysol and Histic Gleysol were the most rich in P compounds. The differences between the surface and subsurface soil layers were not very pronounced.
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