Estimated mineralisation in the upcoming season is calculated with a model describing the breakdown of organic matter in the soil. The model used is based on the MINIP model, developed by Yang (1996) and Yang & Janssen (2000). It describes the breakdown of organic matter over time. The expected mineralisation (%) for the coming seasons is calculated with this model, and the calculated amount of SOC that will be broken down this year is given on the report. This shows how much SOC should be brought back to the field, to compensate. To sequester carbon, the input of SOC should be higher than the mineralisation. In addition to the parameters given on the report, pH and microbial activity are analysed and used in the mineralisation model.