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Data on the C- and N-transformation dynamics of the soil.

The C- and N-transformation processes were measured over 11 days incubation period under laboratory conditions in the calcareous sandy and chernozem soil. The experiment was carried out with and without glucose carbon source under different N nutritional conditions. The CO2 production and the ammonium- and nitrate-N content of the soil samples were determined from time to time during incubation. The glucose amendment resulted in the first two days period of net immobilization. Between the samplings on days 3 and 11 days the N immobilization and mineralization processes were approximately of equal size. Soil samples CO2 production incubated with glucose and different quantity of N-nutrient, reached a high value already on the first two days of incubation. Later, the intensity of glucose decomposition was controlled by the rate of mineralization of the organic N-forms of the soil.