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Fig. 2 | Chemical and Biological Technologies in Agriculture

Fig. 2

From: Effect of bioeffectors and recycled P-fertiliser products on the growth of spring wheat

Fig. 2

a Total aboveground biomass of wheat plants in the KALKE experiment as a function of \(P_{{{\text{H}}_{ 2} {\text{O}}}}\) measured after 27 days and b the measured values of \(P_{{{\text{H}}_{ 2} {\text{O}}}}\) across P fertilisers and BE treatments. In a, data are fitted to three-parameter functions of the form \(y = y_{0} + a \cdot \left[ {1 - e^{{\left( { - b \cdot x} \right)}} } \right]\). In b, each bar represents the mean of data from four replicate samples. Error bars represent SEM. The following P fertilisers were added in the experiment: no P fertiliser (P0), TSP, superphosphate (SP), sewage sludge (SS), sewage sludge ash (SSA), Thomas phosphate (Thph), P-enriched LD slag (LDS/SSA)

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