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Effects of arbuscular mycorrhizal fungi and biochar on maize (a) shoot biomass, (b) root biomass, (c) total biomass, and (d) root–shoot ratio. Data are means of five replicates ±SEs. Different letters above the columns indicate significant differences according to Duncan’s test at p < 0.05. CK, control; A, arbuscular mycorrhizal fungi; B, biochar; AB, arbuscular mycorrhizal fungi and biochar.
