Fig. 6

Concentrations of Ce (a), Ca (b), Mg (c), Fe (d), and Al (e) in roots of the crop with Ce treatment, and concentrations of Y (f), Ca (g), Mg (h), Fe (i), and Al (j) in roots of the crop with Y treatment in the high clay and low clay soils. Values represent the mean ± standard deviation (n = 4). Different letters are significantly different at 5% level according to least significant difference post hoc test.