Chemical Composition of Spring Wheat Plants on Acidic Sod-Podzolic Light Loamy Soil, Calcified by Calcium-Containing Industrial Waste. Empirical Models of Translocation of Macro- and Microelements into Vegetative

Abstract

In 2 vegetation experiments laid on acidic sod-podzolic light loamy soil, a comparative study of the fertilizing value and reclamation properties of finely ground dolomite flour (DF) particles used for road construction and blast furnace slag (FS) of a metallurgical plant was carried out. It was found that 1 year after liming, DF, introduced in doses equivalent to FS in terms of neutralizing ability, contributed to a greater shift in pHKCl and a greater accumulation of the sum of the exchange bases Ca2+ + Mg2+. In terms of the effect on the productivity of wheat straw, variations with FS, introduced in equal amounts with DF, were not inferior to the latter. The effect of liming DF on wheat grain yield was more significant than with FS. The relationship between the content of mobile Ca2+ + Mg2+ cations in reclaimed soil and the productivity of wheat grain was revealed. Empirical dependences describing the effect of increasing doses of meliorants on the transition of calcium, magnesium, zinc, iron and manganese into straw and grain of plants have been developed. It is concluded that at the first stage of the dissolution of meliorants, their chemical nature was the leading factor in achieving the effect of curing. The degree of grinding of lime materials was of secondary importance.