Summary
This meta-analysis, published in Nature, synthesises evidence from a large number of field studies worldwide to assess the productivity of no-till agriculture relative to conventional tillage. The authors find that no-till typically results in yield penalties, but that these are substantially reduced or eliminated when combined with crop rotation and adequate residue retention. The findings provide an evidence base for evaluating the trade-offs between conservation tillage practices and agricultural productivity.
UK applicability
The findings are broadly applicable to UK arable systems, where no-till and reduced tillage adoption has grown under agri-environment schemes and soil health policy agendas. UK practitioners and policymakers should note that the yield penalty associated with no-till appears most manageable under well-designed rotations, which is consistent with guidance from bodies such as AHDB.
Key measures
Relative yield ratio (no-till vs conventional tillage); yield gap (%) by crop type, climate zone, and management practice
Outcomes reported
The study quantified the effect of no-till on crop yields relative to conventional tillage across multiple crops, climates, and management contexts. It examined conditions under which yield gaps narrow or widen, including the role of crop rotations and residue management.
Topic tags
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