Fig. 3. Soil pH dynamics during the incubation period for treatments PBA (soil + PBa), PBV (soil + PB, ventilated incubation), PBS (soil + PB, sealed incubation), CKV (soil only,
ventilated incubation), and CKS (soil only, sealed incubation). Each value represents the mean of three replicates with the standard error shown by the vertical bars.