Figure 3.
Effects of soil nitrogen fertilization and inoculation on G. max nodule biomass: root biomass (panel A), nodule biomass (panel B), and root biomass (panel C). Soil nitrogen fertilization treatment is on the x-axis. Inoculation treatment is represented by coloured boxplots. Yellow shaded boxplots in panel C indicate individuals that were not inoculated with B. japonicum, while red shaded boxplots in all panels indicate individuals that were inoculated with B. japonicum. Boxes are the upper (75% percentile) and lower (25% percentile) quartile range. The whiskers are are the furthest data point, no further than 1.5 times the inner quartile range. Coloured dots are individual data points, jittered for visibility. The lettering above each box indicates the results from post-hoc Tukey’s tests with different lettering indicating statistically different groups (Tukey: p < 0.05).
