CHANGES IN ACID-BASE PROPERTIES OF CHERNOZEM SOIL UNDER THE INFLUENCE OF LIME MELIORANT AND MINERAL FERTILIZERS
The article presents data on the study of the effect of waste from the kiln of limestone flour as a chemical meliorant and mineral fertilizers on the acid-base properties of leached Chernozem. As shown by the results of research, the use of chemical meliorant against the background of the use of different doses of mineral fertilizers and in its pure form contributed to the accumulation of calcium and magnesium cations, which to a certain extent affected the increase in the amount of exchange cations in the soil absorbing complex of leached Chernozem and reduced soil acidity. In the variants with the use of liming with a dose of chemical meliorant 1.0 Ng for a three-year period, deviations in the pH level were in the range of 0.26-0.49 units, with a dose of 1.5 Ng-0.66-0.77 units, with a dose of 2.0 Ng-0.94-1.09 units.