On one, water sheets off the surface, taking topsoil with it. On the other, it disappears straight into the ground and waits there for the dry spell to come. The difference is soil structure — and structure is something you can rebuild.
Healthy, living soil behaves like a sponge. Roots, fungal threads and earthworm channels open up a network of pores that let water move down into the profile instead of running off the top. On our regenerative fields we measure up to 11× faster water infiltration than on comparable conventional land. For a farmer, that means fewer flooded field entrances after a storm and more moisture banked for July. For the wider catchment, it means less flash flooding downstream.
The mechanism. Infiltration is governed by soil structure, and structure is built by biology and cover. The research here is consistent. A meta-analysis of infiltration studies (Basche & DeLonge, 2019) found that introducing perennials raised infiltration rates by around 59% on average and cover crops by around 35%, with the biggest gains coming from practices that keep the ground covered and roots living year-round. A long-term Brazilian trial cited in a 2023 review of regenerative practices recorded infiltration climbing from 20 mm/hour under conventional tillage to 45 mm/hour under no-till — more than double — simply by leaving the soil structure intact (Khangura et al., 2023).
Organic matter does the rest. Every 1% increase in soil organic matter lets a hectare hold on the order of tens of thousands of extra litres of water — the USDA's oft-cited figure is roughly 30,000 litres per hectare per 1% (via Rodale Institute, 2024). That stored water is exactly what a crop draws on when the rain stops.
An 11× improvement is well above the meta-analysis means, and that's the point of stacking practices rather than adopting one in isolation. There are also other reasons. Other our measurements lead to much lower difference. An average figure would be lower. It is not only about the improved structure of our regenerative field, but also about the level of degradation of the conventional field. In this measurement the compared conventional field was in very bad shape. A field that is simultaneously no-till, cover-cropped, diversely rotated and free of the compaction that comes with heavy synthetic-input systems doesn't improve additively — the effects compound. It's also why a single before/after number on one field can look dramatic compared with a broad average across hundreds of mixed studies.
The same porous structure that soaks up a downpour also releases water slowly in dry months, and it lets more rainfall pass through to recharge groundwater instead of evaporating off a bare, baking surface. In a European climate that is trending toward both heavier storms and longer dry spells, a soil that buffers both extremes isn't a luxury — it's the difference between a resilient farm and a fragile one.
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