Actual state and development of active aluminium in cambisols | Aktuálny stav a vývoj aktívneho hliníka v kambizemiach
2008
Makovníková, J., Výskumný ústav pôdoznalectva a ochrany pôdy, Banská Bystrica (Slovak Republic)
Obtained results of status and development of active aluminium in Cambisols of Slovakia are presented in this paper. Active aluminium content has been observed in the frame of Partial monitoring system - Soil. The soil samples were collected from the depth 0 - 0.10 m in 1993, 2007 and 2002 years. Active aluminium content (in soil samples with pH value in KCl lower than 6.0 n = 61), basic cations Ca sup(2+) Mg sup(2+) a K sup(+), value in KCl, Corg and soil particle lower than 0.01 mm were determined. Active aluminium content in Cambisols (status in 2002 year, depth 0 - 0.10 m) has been running from 1.20 to 385.12 mg per kg. The highest median of active aluminium content was measured in Cambisols group development on Flych belt. Relation between Al sup(3+)/CA sup(2+) indicates a degree of soil degradation. Unsuitable relations were determined in Cambisols group development on Flysch belt and in Cambisols group development on acid substrates (both arable land). Increase in active aluminium content was observed in Cambisols group development on Flysch belt. From the viewpoint of Spearman correlation analyses active aluminium content was in negative significant relation with pH in KG as well as with Ca sup(2+) and in positive significant relation with Cox . A methodological process of selective sequential extraction according to Zeien and Brummer has been used for five key localities (Cambisols). Aluminium is bound with relative high share on Fe oxides as well as in residual fraction. The mobile fraction is very important especially from plant uptake of view.
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