Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Regenerative agriculture effects on biomass, drought resilience and 14C-photosynthate allocation in wheat drilled into ley compared to disc or ploughed arable soil

Nichola Austen; Elizabeth Short; S. Tille; I. Johnson; Richard Summers; Duncan D. Cameron; J. R. Leake

bioRxiv · 2025

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Summary

This field trial investigates the agronomic and physiological responses of wheat grown on regeneratively managed soils (following ley break) compared to conventional arable soils prepared by disc or ploughing. Using 14C radioisotope tracing, the authors quantify how management history influences photosynthate partitioning to belowground carbon pools and root development, with implications for drought resilience and soil carbon sequestration. The work contributes empirical evidence on whether ley-based rotations enhance wheat performance and soil biological function relative to continuous arable cultivation.

UK applicability

Findings are directly applicable to UK temperate arable farming, where ley breaks and rotational grazing are increasingly promoted in regenerative agriculture guidance. Results may inform decisions about conversion from continuous cereals to rotation systems, though performance will vary with regional soil type, rainfall patterns, and management intensity.

Key measures

Wheat biomass yield, shoot and root dry matter, 14C-photosynthate allocation to roots and rhizosphere, soil water retention, drought stress indicators

Outcomes reported

The study compared wheat biomass production, drought resilience, and belowground carbon allocation in wheat grown on soil managed under regenerative practices (ley conversion) versus conventional tillage (disc or ploughed) systems. Measurements included above- and below-ground biomass, photosynthate partitioning using 14C tracing, and drought stress responses.

Theme
Farming systems, soils & land use
Subject
Soil health and crop performance under regenerative management
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Preprint
Geography
UK
System type
Arable cereals
DOI
10.1101/2025.09.04.674292
Catalogue ID
NRmo3d4gae-094

Topic tags

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