Heavy metals complex influence on enzymatic activity and effective fertility of the cryosolic meadow-chernozem soil
A small plot experiment was held in cryosolic meadow-chernozem soil. It was shown that a combination of heavy metals, such as: copper, lead, zinc and cadmium in doses of 1 and 5 MPC (maximum permissible concentrations) reduces the activity of soil enzymes and the yield of green mass of barley variety “Tammy.” Redox enzyme dehydrogenase and hydrolytic enzymes phosphatase and urease are the most sensitive to pollution. The activity of these enzymes can be used for diagnostics of the frozen meadow-chernozem soil effective fertility and the degree of its contamination by heavy metals.