Fig. 3. Mean values for the microbial biomass carbon, respiration, and CO2 efflux of the rototilled, disked, and control soils. (a) Microbial biomass carbon (MBC), (b) respiration, and (c) CO2 efflux. The soils were tilled at 0 h. The time of irrigation (222 h) is indicated by the vertical dashed line. The error bars are the standard error of the mean (n = 3). The least significant difference (LSD) between the treatments is shown. There were no significant differences in MBC or respiration at any point during the experiment.
