Agriculture and land care
Sustainable Agriculture in Brittany
Working farms across Brittany are rethinking how they keep soil covered, rooted, and alive through the year. This dossier looks at the practices behind that shift, and at the evidence and limits that come with them.
Winter cover
Covering the Soil Between Crops
Mixtures of rye, vetch, and mustard grow through the cooler months when bare soil is most exposed. Legumes such as vetch can fix atmospheric nitrogen, while the roots of these species keep particles bound and create channels that help water move through the profile.
Their exudates also feed soil microbial communities between cash crops. How much these effects matter depends on soil type, climate, and how the cover is terminated, so results should be read locally rather than taken as a universal rule.
Field edges and grazing
Hedgerows, Trees, and Grazing Rotation
Field boundaries and pasture management shape how water, nutrients, and life move across a farm.
Agroforestry Lines
Rows of trees planted across fields can slow runoff, shade soil, and shelter crops. Their benefits depend on species choice, spacing, and how the land is worked.
Bocage Hedgerows
Hedges along earth banks stabilise field boundaries and can help limit nutrient movement toward watercourses. Restoration works best when matched to local conditions.
Rotational Grazing
Moving animals between paddocks gives grass time to recover and spreads manure more evenly. Stocking rates and rest periods should be adapted to each farm's soil and forage.