Table 1. Data for soil plots.
UW Farm plots with the year the plot was incorporated to the farm and number of years under regenerative management practices, measured values for soil organic matter when available from 2018, 2019, 2021, and 2022, and topsoil depth measured in January or May 2023.
| Plot | Year added to farm | Years under regenerative management as of 2022 | SOM (%) May 2018 |
SOM (%)
May 2019 |
SOM (%) April 2021 | SOM (%) Nov 2022 |
Topsoil thickness
(cm) 2023 |
|---|---|---|---|---|---|---|---|
| A | 2012 | 10 | 8.1 | – | 7.3 | 6 | 15.3 |
| B | 2011 | 11 | 5.5 | 5.9 | 7.4 | 4.9 | 15.8 |
| C | 2011 | 11 | – | – | 6.8 | 8.1 | 14.5 |
| D | 2011 | 11 | 7.1 | 7.7 | 7.8 | – | 16.0* |
| E | 1995 | 0 | 3.8 | 5.5 | 6.1 | 5.4 | 4.9 |
| F | 2011 | 11 | 8.4 | 14.9 | 8.1 | 8.2 | 14.5 |
| G | 2011 | 11 | – | 14.7 | 7.1 | 6 | 15.0 |
| H | 2002 | 20 | – | 13.1 | 18.3 | 25.1 | 20.4 |
| I | 2016 | 6 | – | 8.2 | 7.6 | 12.3 | 11.7* |
| J | 2017 | 5 | – | 8.3 | 6.8 | 4.0 | 8.6 |
| K | 2015 | 7 | – | 17.6 | 17.3 | 7.4 | 13.4 |
| HT | 2015 | 7 | 7.0 | 13.1 | 14.1 | 15.7 | 13.3* |
| X3 | – | 0 | – | – | – | 3.4 | 2.5* |
| X4 | – | 0 | – | – | – | 2.0 | 4.8* |
Notes.
*
Topsoil depth measurements taken in May 2023.