Figure 4.
The dry weight (DW) of (a) shoots and (b) roots of white mustard “Rota” grown under different sulphur and/or nickel concentrations in the nutrient solution. Mean values (n = 36) followed by the same letter are not significant at 0.05 probability level based on Tukey’s honestly significance tests. Asterisks indicate significant effects for main factors and interactions between them.