Search for: [Abstract = "The very low value of pH, great quantities of products of sulphide decomposition, in this number of free sulphuric acid exceeding 60mg\/100g of soil, and a great content of soluble forms of aluminium Al3 within 6.0\-10.0 cmol\/kg on average, constituted a complex of factors limiting the growth and development of the vegetation. Additionally the records show an extremely low content of phosphorus and potassium in forms assimilable by plants and of total nitrogen."]

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