PL
Zwiększenie dawki saletry amonowej powodowało wzrost zawartości Cu, Zn, Pb i Cd w częściach nadziemnych roślin. Wpływ azotu był na ogół większy u roślin na glebie wzbogaconej w dany pierwiastek.
EN
The influence or diversified doses or ammonium nitrate (0,2, 0,4 and 0,6 g N per 5 kg dry soil) on the content of copper, zinc, lead and cadmium in plants grown on the soil with various content of those elements was investigated in a pot experiment on oats. Cu doses were: 20 and 100; Zn — 100 and 500; Pb — 100 and 500 and Cd 10 and 50 mg per 1 kg dry soil. Oats were harvested after earing. An increase in the dose of ammonium nitrate caused a raise in the concentration of copper, zinc and lead, and less regularly in cadmium concentration in the oats tops. The influence of nitrogen on the content of copper, zinc and lead was stronger in plants grown on soil enriched in a given element. A better supply of nitrogen in plants favoured copper and zinc dislocation from roots to tops. N-fertilization had no effect on the content of various forms of copper, zinc, lead and cadmium which penetrated into 1 M HCl extract.