Fig. 6. Comparison of total root biomass per transect (five cores) and root biomass estimated with GPR (adjusted to account for fertilizer effects on signal magnitude) within each treatment (+/- s.e.).
Fig. 6. Comparison of total root biomass per transect (five cores) and root biomass estimated with GPR (adjusted to account for fertilizer effects on signal magnitude) within each treatment (+/- s.e.).