Fig. 5From: Effects of sweet pepper straw biochar on soil microbial communities and growth of continuously cropped cucumberBacterial community composition at phylum (A) and genus (B) levels influenced by SPSB concentrations. CK (no biochar), S1 (2.5% w/w biochar + soil), S2 (5% w/w biochar + soil), S3 (7.5% w/w biochar + soil). The significant differences are determined by the Tukey test, with different lowercase letters indicating significant differences between groups (P < 0.05)Back to article page