CONTENT OF ACTIVE BORON FORMS IN TECHNOGENIC SOILS OF NIKOPOL MANGANESE ORE BASIN

The features of active boron concentrations distribution in space and on pedozem layers (filling layer of black Southern soil on loess-like loam) and sod-lithogenic soils on gray-green, red-brown clay and loess-like loam of Nikopol manganese ore basin. We provided general assessment of the technogenic soils state regarding to active boron content. We made the mathematical models of boron distribution in space and the dendrogramms to evaluate its homogeneity in the layers of 0-10 ... 90-100 cm of each soils type. In addition, we found that the studied soil profiles are heterogeneous. Technogenic soils have a high concentration of boron which is 2.3 times exceeds its content in the reference samples. In the future, it can lead to boric salinity. We found that silt and clay fraction of the soil play an important role in the boron migration