THE INFLUENCE OF MINERAL FERTILIZERS ON PRODUCTIVITY OF SOYBEAN CULTIVATED IN ROSTOV REGION
The article is devoted to the study of the influence of different doses and combinations of mineral fertilizers on the productivity of spring barley Medicum 157. In the course of research, it was found that nitrogen fertilizers should be applied at a dose of N<sub>30</sub> to increase the yield and protein content in the grain with a maximum return on fertilizers.