Fig. 2. Gross N mineralization rate (GM) vs. respiration rate (R) divided by the C/N ratio (Z) of various plant residue constituents. (a) C/N ratio of total plant residue. (b) C/N ratio of water solubles (WS). (c) C/N ratio of neutral detergent solubles (NDS) and C/N ratio of acid detergent solubles (ADS). The regressions are based on data from the incubation period Day 5 to 6. Error bars show standard error (n = 3).