BIOLOŠKA REKULTIVACIJA RUDARSKOM AKTIVNOŠĆU DEGRADIRANIH ZEMLJIŠTA NA LOKACIJI SRĐEVIĆI – GACKO
BIOLOGICAL RECLAMATION OF SOILS DEGRADED BY MINING ACTIVITY ON LOCATION SRDJEVICI – GACKO

Summary/Abstract: Research has been performed on soil degraded by mining on locality Srdjevici owned by Mine and thermal power plant Gacko in a period of 2011 to 2013. Experiment has been set on three soil beds: pure marl – control; soil 40 cm – marl 35 cm – gravel 30 cm; soil 40 cm – marl 35 cm – ashes 40 cm. For sowing have been used three grass-legumes mixtures and alfalfa in a pure culture. During biennial testing following parameters have been followed: chemical properties of marl before and after biennial testing, chemical properties of soil and other soil beds, total content of microelements, heavy metals and concentration of polychlorinated biphenyl (PCB) in marl and soil beds, covering of soil with crops at the end of a second year of testing, botanical analysis of green mass of mixtures at the beginning and the end of testing, green mass yield per years and content of microelements and heavy metals in a dry plant mass. Soil that has been used in reclamation had a base reaction. With analysis of samples of marl, soil and other soil beds we have confirmed an increased content of heavy metals cadmium (Cd) and nickel (Ni) and determined values have been above allowed border values for agricultural soil. During biennial testing the best average covering of soil was on soil beds sowed with a mixture I/G (alfalfa 70% + orchard grass 30%). On control soil bed (pure marl) the highest yield of green mass has been accomplished with a mixture IV/G (15.1 t/ha). Increased content of heavy metals cadmium (Cd) and nickel (Ni), which has been determined in soil and other soil beds, haven‟t increased content of these elements in plant material of tested plant species.

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