**4. Conclusions**

This research provides a scientific basis and confirms the value of mulching as a sustainable although time-consuming agricultural method to improve soil organic carbon sequestration. Long-term effects of mulching have to be tracked to identify whether SOC improvement reaches a steady state related to the saturation of SOC pools. Future studies are also needed to quantify associated economic benefits and agricultural sustainability related to carbon-transformation processes.

**Author Contributions:** Conceptualization, V.P., A.P., E.H. and D.M.; methodology, V.P., A.P. and E.H.; investigation, E.H., D.M., I.H. and A.C.; resources, V.P., D.M., V.K. and K.B.; data curation, V.P., D.M. and V.K.; writing—original draft preparation, D.M.; writing—review and editing, A.P. and V.P.; visualization, D.M. and V.P.; supervision, A.P., V.P. and E.H.; project administration, A.P. and V.P.; and funding acquisition, A.P. and V.P. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by PRIMA program supported by the European Union, gran<sup>t</sup> number 2041 (LENSES—leaning and action alliances for nexus environments in an uncertain future) (Call 2020 Section 1 Nexus IA).

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
