Changes in some properties of solonetzes of the Baraba Lowland 20-25 years after gypsum application

摘要

It is shown that a single gypsum application to crusty hydromorphic low- and high-sodium solonetzes of the Baraba Lowland exerts a positive ameliorative effect for a period of 25 years and more. A plow layer with a crumb-granular structure is formed in the ameliorated solonetzes, and positive changes in the particle-size distribution are also observed. The ameliorated crusty solonetzes are transformed into meadow and chernozemic-meadow soils with different degrees of alkalinity and salinity.