Table 6: Measured C0 (N0), annual C (N) additions,  ( ), ( ),and Ceq (Neq) at equilibrium.

Crop sequenceC0m
Mg ha−1Mg ha−1 year−1Mg ha−1

SS40.5 (2)2.8 (0.6 )0.4737.9
MM41.0 (2)4.2 (1.8)0.5538.9
W/S-M45.3 (0.8)4.8 (0.8)0.6740.4

N0 Neq
Mg ha−1Mg ha−1 year−1Mg ha−1

SS4.05 (0.2)0.068 (0.01)0.0573.3
MM4.20 (0.2)0.074 (0.03)0.0613.55
W/S-M4.33 (0.1)0.090 (0.01)0.0763.71

C0 (N0): initial soil C (N) stock; m ( ): annual C (N) addition; ( ): maximum humified C (N) stock; Ceq (Neq): soil C (N) stock at equilibrium. SS: soybean monoculture; MM: maize monoculture; W/S-M: doubled-cropped wheat/soybean maize.