Fig. 2
From: Assessing microbially mediated vivianite as a novel phosphorus and iron fertilizer
Effect of the application of different P sources on (a) SPAD measurements for durum wheat, (b) dry matter (DM) yield, (c) shoot P concentration and (d) total P uptake for durum wheat harvested at 34 DAT. (e) Represents the relative P use efficiency (RPUE) (%) of the tested fertilizers using KH2PO4 as the reference P fertilizer. The data are means of 5 replicates and error bars indicate standard error. Means with the same letters were not significantly different according to the Tukey test at a probability level of 0.05