Reactive aluminium and iron in selected profiles of andosols and podzols
2004
Balkovic, J.(Soil Science and Conservation Research Institute, Bratislava (Slovak Republic) | Cemanova, G.Comenius University, Bratislava (Slovak Republic). Faculty of Natural Sciences)
This paper is focused on evaluation of reactive aluminium and iron in genetic horizons of studied profiles of Andosols and Podzols. Four profiles were analysed for oxalate and pyrophosphate iron and aluminium and, moreover, also for activity of Al sup(3+) in the soil solution by conventional soil survey. The paper offers a view on profile distribution of reactive forms of Al and Fe as for their quality and quantity. Two qualitatively different forms of Al and Fe were selectively extracted for each genetic horizon of studied profiles of Andosols and Podzols; i.e. organically associated Al, Fe (Al org., Fe org.) and short-range-order minerals of Al and Fe (Al min., Fe min.). We also discuss the solubility mechanisms of Al min. and Al org. in the Aluminium buffer range as an important environmental parameter affecting phytotoxicity of soil environment in such acid soils.
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