The possibility of Miscanthus×giganteus cultivation as an energy crop on the different types of mining rocks was studied. It was revealed that a loess-like loam and red-brown clay with the added black soil were the most suitable for plant growing. The yield of dry above-ground biomass ranged from 4.3 to 6.8 t DM ha-1 after the first year of cultivation and from 8.9 to 9.7 t DM ha-1 after the second year while using these substrates. The application of amendments stimulated the growth and development of plants and increased productivity from 50 to 140%. M.×giganteus showed sufficient tolerance and good enough growth on the geochemically active dark-gray schist clay with yield from 2 to 3 t DM ha-1 after the first year of cultivation already. For plants grown on the different strata of dark-gray schist clay, the thermal decomposition of the biomass took place in four stages in the temperature range from 30 to 640 °C. The samples grown on stratum 0-20 cm showed the highest reactivity with a peak 30.6%/min at 290 °C. There were differences in the concentrations of determined heavy metals: iron, zinc, copper, and lead in the plant tissues depending on the layer depth of dark-gray schist clay from 0 to 20 cm to 40-60 cm. The relatively limited content of heavy metals in the above-ground biomass was due to the preferential accumulation in the roots.

Dnipro State Agrarian and Economic University Sergey Efremov str 25 Dnipro 49600 Ukraine

Jan Evangelista Purkyne University in Ústí nad Labem Ústí nad Labem Czech Republic

National University of Life and Environmental Sciences Kyiv Ukraine

Oles Honchar Dnipro National University Gagarin av 72 Dnipro 49010 Ukraine

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