(in lingua inglese)
1. Under conditions of the conducted experiment, a considerable effect of the applied fertilization on the obtained yield amount was determined.
2. The most favourable productivity coefficient was reached when 400 kg of the slow-acting fertilizer was used.
3. The highest physiological effectiveness was determined when 500 kg · ha-1 of the slow-acting fertilizer was used.
4. Taking into account both the yield amount and the values of coefficients of the nitrogen fertilization efficiency, the most beneficial variants are to fertilize with slow-acting fertilizers under the root and to fertilize with traditional fertilizers applied in a conventional way.