Soil carbon is undoubtedly important for crop production and soil workability. While incredibly variable it is also easy to measure so agronomists find it accessible.

There is at least some evidence to show that actions, such as direct drilling, while increasing soil carbon also lead to increased nitrous oxide emissions resulting in a higher greenhouse gas emission than the carbon capture. Nitrous oxide emission are much harder to measure and not measured by most. My guess is that as cereal drilling is pushed back into wetter conditions the risk is higher.

Is there any data available showing the relationship over multiple sites and years?