This dataset includes the fifth and final year observations of the Finnish Carbon Action carbon sequestration experiment. In the experiment c.a. 100 farms test carbon farming methods on a test field and an adjacent control plot. Of these 20 farms were chosen for continued sampling 2019-2023 combining field observations and soil sampling. This data will be coupled with satellite imagery, field sensors and carbon cycle modeling to forecast carbon sequestration. Subsequent sampling will track changes in soil carbon stock and soil health. This dataset is an update of the final monitoring year and includes summaries of the previous year measurements. The full measurements for previous years can be found in: https://zenodo.org/communities/carbonaction/ . The 2023 update includes data on: physical quality: soil structure (VESS), bulk density, porosity, water holding capacity, infiltration rate biological properties: earthworm counts, above ground biomass, plant cover (%), chlorophyll, microbial activity, root biomass chemical properties: soil nutrients, change in nutrient pools over time

The years 2019, 2020, 2021 and 2022 datasets can be found at the Carbon Action repository. https://zenodo.org/communities/carbonaction Funded by Academy of Finland Strategic Research Council project MULTA (352437).