Sensitivity analysis and calibration of CN-SIM to simulate the mineralisation of liquid dairy manures

► CO2 respiration of liquid dairy manures was well simulated by the model CN-SIM. ► Soil mineral nitrogen concentration (SMN) was overestimated after day 40. ► The release of initially immobilised N was responsible for SMN overestimation. ► N immobilisation was the only possibility to match the measured decrease of SMN. ► Will it be possible to improve simulations by adding other SMN sinks in the model?