Figure 9.

Mg-deficiency effects on the concentrations of N (a), P (b), K (c), Ca (d), Mg (e), Mn (f), Fe (g), Cu (h), Zn (i) and B (j) in the veins of upper, middle, and lower leaves. Bars represent the mean ± standard error (n = 4–6). Data were analyzed by two-way ANOVA (three (leaf positions) × two (Mg levels)) followed by Duncan's multiple range. Different letters above the bars indicate a significant difference at p < 0.05. NS, *, and ** indicate nonsignificant, significant at 5% and 1% level, respectively. LP, leaf position.