Fig. 4
From: Effect of bioeffectors and recycled P-fertiliser products on the growth of spring wheat
Score plot (a) showing the result of a PCA on the elemental (B, Ca, Cu, Fe, K, Mg, Mn, P, S, Zn) composition of the youngest fully developed leaf measured at 25 days after sowing in the UCPH experiment. Loading plot (b) showing the loadings of the second principal component. Data are from three replicates of the P-fertilisation treatments P0 (control), TSP, SP (superphosphate), SS (sewage sludge), SSA (sewage sludge ash), FFPM (fibre fraction of pig manure) and Comp (compost of sewage sludge and garden/park waste). Pots were not amended with a BE (BE0)