Total CO2 emitted and percentage of total carbon lost after three weeks of incubation.

To further probe differences among the S, SV, SVB, and SB treatments, total CO2 emitted and % C lost were compared via one-way ANOVA. Data represent the mean ± SE. Total C content refers to the sum of initial carbon present in the soil plus C added through amendments. Letters indicate significant differences between treatments as determined using Tukey HSD test.S, soil; SV, soil with vinasse; SVB, soil with 5% biochar and vinasse; SB, soil with 5% biochar. S and SB received water at the beginning of week 2 (30 mL) and week 3 (60 mL). SV and SVB received the same amount of vinasse.