Figure 4

Root concentrations of Nitrogen (mg g⁻¹) (a), Phosphorus (mg g⁻¹) (b) and Potassium (mg g⁻¹) (c) in 40-day old tomato plants under laboratory conditions. Five replicates were used. Different letters indicate significant difference (p < 0.05), according to a Turkey, One-way ANOVA.