Fig. 6From: Effects of biochar on soil microbial diversity and community structure in clay soilThe Kruskal-Wallis H test plot at the phylum and genus levels for bacteria. Notes: MC, BS, and MCS are the same as in Fig. 1. Columns of different colors represent different groups. The rightmost is the P value and the corresponding symbol. *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001Back to article page