Figure 10
Average total biomass, soybean yield, below ground biomass, and above ground biomass for different treatment groups from greenhouse growth and production experiment (GP2) including controls, −P controls, HA at 15 ppm P, nHA at 15 ppm P, nHA at 56.5 ppm P, and soluble Pi additions (treatment groups A-F, respectively) Bars represent mean values with error bars showing standard deviation (n = 20 treatments A-E, n = 5 treatment F). Treatments with a common letter superscript above are not significantly different, as determined via TukeyHSD post-hoc test (α = 0.05).
