In a 4-year laboratory and vegetation experiment on highly acidic sod-podzolic sandy loam soil, a comparative study of the fertilizing value and reclamation properties of calcareous materials of a carbonate nature (dolomitized limestone flour – DLF, dolomite flour – DF, conversion chalk – CC, crushed stone screening – CSS, chemically pure salt – CaCO chemically pure, or cp), silicate ameliorants (blast furnace slag – BFS and shale ash – SA) and brucites (ameliorants of hydroxide nature) with different contents and the ratio of CaO : MgO, introduced in a dose of 0.4 H was conducted. It was found that the reclamation effect of liming, regardless of the chemical composition of the ameliorants, was observed throughout the experiment (with the exception of shale ash). Liming contributed to the enrichment of the soil with exchangeable calcium and magnesium cations. The content of mobile aluminum and manganese compounds was significantly lower than in the non-liming versions. According to the total productivity of plants over the 4 years of the experiment, all options can be arranged in the following ascending order: control (without fertilizers) nitrogen strip (background) background + CC of 0.4 H background + DF of 0.4 H background + CSS of 0.4 H background + DLF of 0.4 H background + brucite (category C) of 0.4 H background + BFS of 0.4 H background + CaCO cp background + SA of 0.4 H background + brucite (category A) of 0.4 H.
A. V. Litvinovich (Wed,) studied this question.