A new study has challenged the carbon reduction assumptions of conservation agriculture. A Rothamsted-led study suggests that regen agriculture’s impact on greenhouse gas emissions is more complex than previously thought. While some principles of conservation agriculture consistently reduce emissions, others can increase them depending on environmental conditions and management decisions. The research analysed 422 scientific studies from around the world to assess how key conservation agriculture principles (reduced/no tillage, mulching, crop rotations) and appropriate fertiliser management influence emissions of the three major greenhouse gases: carbon dioxide (CO₂), nitrous oxide (N₂O) and methane (CH₄). The findings revealed that the climate benefits…