Minimizing nutrient losses to freshwater from pasture-based dairy systems
RW McDowell, KA Macintosh, JR Roche, O Fenton, L Delaby · 2026
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Description
McDowell and co-authors trace how milk made on grass still dirties rivers, and where to intercept it. Pasture dairying's expansion has raised nitrogen and phosphorus losses to fresh water. The review separates sources, dung, urine, feed, and fertilizer, from the paths they travel, runoff and leaching through soil.
Urine patches dominate nitrogen loss through nitrate leaching. Dung and soil drive phosphorus loss, mostly in surface runoff on wet or compacted ground. Fixes differ by nutrient: tighter nutrient budgets, better manure handling, and housing or grazing strategy on the farm; wetlands, riparian buffers, and detainment structures at the field edge. Targeting the critical source areas multiplies value for money. The authors tie success to aligning green gains with farm profit.
Catalog record
| CREATOR | RW McDowell, KA Macintosh, JR Roche, O Fenton, L Delaby |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 21 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |