Summary
This pilot study demonstrated the feasibility of farmer-led earthworm monitoring as a practical, cost-effective approach to national soil health assessment in England, mobilising over 1300 hectares of farmland in spring 2018. Results showed that 42% of surveyed fields exhibited ecological imbalance indicative of over-working, with tillage identified as a significant negative factor on earthworm populations independent of organic matter management. High farmer participation and satisfaction, combined with the potential to streamline the protocol further and reduce fieldwork costs to approximately £1.48 ha⁻¹, suggests strong potential for scaling this approach to support England's sustainable soils policy targets by 2030.
Regional applicability
Findings are directly applicable to UK farming practice and policy, as the study was conducted across English farmland and specifically designed to support England's 2030 sustainable soils aspiration. The demonstration of farmer-led monitoring as both participatory and cost-effective offers a scalable model for national soil health assessment programmes, though further work may be needed to evaluate transferability across different soil types, climates, and farming systems within the wider United Kingdom.
Key measures
Earthworm abundance and presence by ecological group (epigeic, endogeic, anecic) from 10 soil pits (20 × 20 × 20 cm) per field; proportion of fields with ecological imbalance (absence/rarity of epigeic and/or anecic earthworms); impact of tillage on earthworm populations; farmer participation rates and satisfaction scores; fieldwork costs per hectare; potential cost savings at national scale
Outcomes reported
The study assessed earthworm populations across over 1300 hectares of English farmland using farmer-led surveys, evaluating the presence and abundance of three ecological groups of earthworms as indicators of soil health. Results identified field-level associations between tillage intensity and earthworm suppression, and quantified farmer participation rates and willingness to adopt soil management changes based on survey findings.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.