In this study contents of selected microelements were determined in cambic chernozem after intensive mineral fertilization. The studies presented in this paper concern 4 years of experiments. Soil content in Fe, Mn and Zn were determined, in the 0-20cm depth, by DTPA + ammonium bicarbonate method. Boron content of soil was also determined through HCl method. Modification of microelements content in soil resulted from intensive nitrogen fertilizers application, on different pre – fertilized plots with phosphorus and potassium, and decrease of soil pH. Soil microelements content was considered medium in all experimental plots, with exception of Zn in plots with high doses of phosphorus fertilizers.

mineral fertilization; soil; microelement

Presentation: oral