Cd toxicity altered plant concentrations of several macroelements. Cd toxicity increased root concentrations of Mg only in
plants grown with 10M Cd, whereas N concentrations decreased progressively with excess Cd in stems and leaves (12% and 25% in plants grown with 10 and 100M Cd, respectively, although changes were statistically significant only with 100 M Cd) (Fig. 2). Potassium concentrations in roots decreased by 25% with both Cd treatments, whereas in leaves only the highest Cd treatment led to a significant 25% decrease (Fig. 2). Calcium and P concentrations did not show significant changes in any plant part with Cd treatments (Fig. 2).