EN
Agricultural University at Szczecin, Institute of Agricultural Engineering, Department of Plant Production and Irrigation Head: Prof fit., D.Sc. Stanisław J. Karczmarczyk Field experiments on effects of sprinkling irrigation and various doses of nitrogen were performed on two types of soil: sand and sandy loam. On the sandy soil irrigated sugar beets and corn yielded best whean supplied with 210 kg N per 1 ha, whereas 175 kg N proved best for watered potatoes and winter wheat. On the sandy loam soil, for sprinkled beets and corn 180 i kg N ha-1 are recommended, and for potatoes and winter wheat 150 kg. Because irrigation and fertilization distinctly increased the yields, significant losses in magnesium content in the crop and upper soil layer were found. On the sandy soil irrigation contributed to the leaching of magnesium into deeper layers of the soil profile.