Carbon footprint of organic and conventional arable crop production systems in a long-term trial

Summary

This paper uses data from a long-term arable systems trial to compare the carbon footprints of organic and conventional crop production, assessing emissions both per hectare and per unit of produce. By drawing on extended trial data, it offers a more temporally robust assessment than shorter-term studies, accounting for rotational effects and soil carbon dynamics that may favour one system over another depending on the metric used. The findings are likely to contribute to ongoing debate about the relative climate performance of organic versus conventional farming, with important implications for agricultural emissions accounting and policy.

UK applicability

As the paper is published in a journal with strong UK and European arable research representation, and given the authors' institutional affiliations, the trial is likely conducted in the UK, making the findings directly relevant to UK agricultural emissions targets, Sustainable Farming Incentive policy, and organic sector guidance. Even if conducted elsewhere, the long-term trial methodology and arable system types are closely analogous to UK farming conditions.

Key measures

Carbon footprint (kg CO₂e per tonne of crop output); greenhouse gas emissions (kg CO₂e per hectare); crop yield (t/ha); system-level emissions intensity

Outcomes reported

The study measured and compared greenhouse gas emissions and carbon footprints per unit of output across organic and conventional arable crop production systems. It likely assessed emissions across multiple crop types and rotations using data from a long-term experimental trial.

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