Figure 2.

Recovery of ³³P in the shoot material of Plantago lanceolata plants grown in grassland (green), cropland (orange) and sterilized control soils (blue) (a). The low ³³P recovery in sterilized control soils confirm that ³³P recovery corresponds to hyphal activity in the field soils. Shoot biomass (b) and total P uptake per pot (c) in the grassland vs. cropland soils. Boxes mark the interquartile range, vertical lines the whiskers, bold horizontal lines the median and “x” the mean values. Bonferroni corrected p-values <0.05 (based on two-sided Wilcoxon rank test) indicate significant differences between land use systems, “ns” means no significant difference.