Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 2
Written by Yuriy OLIFIR, Anna НABRYEL, Oleh HAVRYSHKO, Tetiana PARTYKA, Hryhoriy KONYK, Nadiia KOZAK
FAO singles out acidic soils, which are widespread in Ukraine, as problematic soils. At the same time, the role of aluminium in soil acidity formation and aluminium toxicity is becoming increasingly important. The study was conducted in a long-term stationary experiment and under conditions of natural analogues of Albic Stagnic Luvisol under forest and fallow land. It was found that cultivation and long-term use of different doses of fertilizers and lime change the content of mobile aluminium compounds, physical and chemical properties of not only the upper humus horizons but also affect the lower horizons and soil formation processes. The highest content of mobile aluminium compounds, 110.3-121.5 mg/kg of soil, is accumulated in the upper humus horizons in the control without fertilizers. With prolonged mineral fertilization, the highest content of mobile aluminium compounds (148.1 mg/kg) is concentrated in the illuvial-eluvial horizon. In the soil under the forest, the highest content of mobile aluminium is accumulated in the upper humus horizons AEg, Ehg and is 210.6 and 183.0 mg/kg of soil, respectively, with the lowest рНКСl value of 3.72 and the highest hydrolytic acidity of 9.73 mg-eq/100 g of soil. The content of mobile aluminium ranges on the fallow land from 54.3 in AEg to 55.7 mg/kg in the Cg horizon, i.e. it is characterized by its uniform distribution.
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