Soil organic carbon is an important factor for soil health and productivity. Soil carbon sequestration (SCS) also plays a crucial role in meeting the climate goals. For that purpose, catch- and cover crops are identified as a cost-effective management practice that combines SCS with other ecosystem services. There is a great need to estimate the amount of current and future SCS in Swedish soils achievable with this practice. This project aims to develop a robust and dynamic method to estimate the potential area of implementation and associated SCS potential. We will also analyze how soil organic carbon contents affects crop yield and resilience to climate change, and address problems relating to bias in data from long-term field trials. Results will improve extension service tools used to assess the effect of management practices on soil fertility and carbon storage, being useful for farmers and decision-makers at various levels, and for the Swedish climate reporting.