Transformation of mineral nitrogen in different horizons of soddy-podzolic soil
Using the <sup>15</sup>N stable isotope as an artificial label in a small-plot field experiment on a well-cultivated loamy soddy-podzolic soil for studying the transformation of ammonium and nitrate soil nitrogen, the consumption of different mineral nitrogen forms by stock beet was studied and the nitrogen immobilization and loss depending on the spatial distribution in the soil profile were determined.