Impact of Biochar on Earthworm Populations: A Review

Figure 1

Abundance of earthworms by pigmentation and size class, in biochar plots sampled at Rosemount, MN; treatments are (i) control (no amendment), (ii) composted manure; (iii) fast pyrolysis hardwood biochar, (iv) fast pyrolysis hardwood biochar + manure, (v) fast pyrolysis macadamia nut biochar. See text for description of size class.