Fig. 5
From: Effect of bioeffectors and recycled P-fertiliser products on the growth of spring wheat
Score plots (a, b) showing the result of a PCA on the elemental (Ca, K, Mg, Mn, Na, P) composition of the aboveground biomass grouped either according to P fertiliser applied (a) or BE inoculation (b). Loading plot (c) showing the loadings of the second principal component. Data are from the HK Kalke experiment. Codes for P fertilisers in a negative control (P0), TSP (TSP), superphosphate (SP), Thomas phosphate (Thph), sewage sludge (SS), sewage sludge ash (SSA), SSA-enriched LD slag (LDS/SSA, light green points)