Figure 1

Effects of mycorrhization with Tuber aestivum, Eisenia fetida earthworms and a combination of both treatments on silver fir root biomass and fine root morphology parameters after 6 and 12 months of mycorrhization in containers under controlled conditions; n = 10. The significantly different values after the Tukey HSD post-hoc test (p < 0.05) are annotated with a different lowercase letter.