Abstract: The experiment was conducted in the year 1965, on soil type chernozem, in Rimski Šančevi, AP Vojvodina, Republic of Serbia. It was organised as a four-field crop rotation. During the trial, 20 variants of fertilizing were studied (19 + control), with increasing quantities of NPK nutrients (50, 100 and 150 kg ha-1). Total quantity of phosphorus and potassium, and ½ of nitrogen were applied in autumn. The remaining quantities of nitrogen were applied before sowing. Usual agronomy practices for sugar beet were applied. Due to the use of nitrogen root yield was increased by 6,33 t ha-1, due to the use of phosphorus the increase in root yield was 4, 83 t ha-1, and due to potassium the increase was 3,64 t ha-1. The increase in nitrogen resulted in decrease of sugar content by 1,29 %, in phosphorus by 0,64 % and in potassium by 1,20 %. When fertilized with excessive NPK nutrients, the sugar yield was lower by 1.140 kg ha-1. Only rational fertilizing can have a positive effect on achieving optimal results

Key words: sugar beet, NPK fertilizing, yield

Presentation: oral