Abstract
An approach to assess the mineralogical status of chernozems is discussed. It is based on ten characteristics of the main groups of minerals composing the silicate part of the soil and allows us to give a comprehensive assessment of the mineralogical status of chernozems and its transformation under the impact of pedogenetic processes. The obtained data may be used for determining the soil genesis; improving soil classification; and solving various applied problems, including the assessment of the adverse effect of irrigation of chernozems on the state of their minerals, the irrigation-induced degradation of smectites and illite formation, illite formation upon the nonexchangeable fixation of potassium from fertilizers, etc. The principles of this approach may also be applied to other soils with due consideration for their mineralogical composition.
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