Fig. 3
From: Assessing microbially mediated vivianite as a novel phosphorus and iron fertilizer
Effect of the application of different Fe sources on the (a) SPAD measurements for white lupin, (b) dry matter (DM) yield, (c) shoot Fe concentration and (d) total Fe uptake for white lupin harvested at 28 DAT. (e) Represents the relative Fe use efficiency (RFeUE) (%) of the tested fertilizers using Fe(II)-sulfate as the reference fertilizer. The data are means of 5 replicates and error bars indicate standard error. Means with same letters were not significantly different according to Tukey test at a probability level of 0.05