Results of ANOVA of soil physicochemical data for the factors treatment and time in control (NPK) and biochar (BC3N) treatments.

Data were analyzed by two-way mixed ANOVA. Data for protein, HMW-Norg and LMW-Norg were available only for one sampling date and therefore were analyzed by one-way ANOVA. Abbreviations: Corg, soil organic C; Ntot, total soil N; BD, soil bulk density; Grav. WC, gravimetric soil water content; WFPS, water filled pore space; AFPS, aire filled pore space; DOC, dissolved organic C; DON, dissolved organic N; NO3−, nitrate; NH4+, ammonium; FAA, total free amino acids; TDN, total dissolved N; HMW-Norg, high molecular weight organic N; LMW-Norg, low molecular weight organic N; DNA, soil DNA content; AOA/DNA, archaeal amoA copy numbers on DNA basis; AOA/soil, archaeal amoA copy numbers on dry soil basis; AOB/DNA, bacterial amoA copy numbers on DNA basis; AOB/soil, bacterial amoA copy numbers on dry soil basis.