Carbon and Nitrogen Mineralization in Relation to Soil Particle-Size Fractions after 32 Years of Chemical and Manure Application in a Continuous Maize Cropping System
Table 1
The soil organic carbon (SOC), total nitrogen (N), soil microbial biomass carbon (SMB-C), soil microbial biomass nitrogen (SMB-N), potential C (Cmin) and N (Nmin) mineralization, SMB-C/SMB-N, SMB-C/SOC, and CO2/SMB-C (qCO2) in bulk soil from the control (CK) or soil that has received 32 years of chemical fertilizer application (N, P: phosphorus, K: potassium) and either 0 (M0), 30 (M30) or 60 (M60) t manure ha-1 yr-1.