Tile lines vulnerable to runoff

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Preliminary research presented at the Professional Dairy Producers of Wisconsin Dairy Policy Summit offered some new insight regarding runoff through tile lines. Discovery Farms researchers have learned that:

  • During snow melt, tile flow may occur before surface flow — by about 24 to 48 hours. 
  • Soil exhibiting preferential flow paths above the tile may not filter as many nutrients from water (before it reaches the tile) as previously believed.
  • Even on frozen ground, the nutrient losses through a tile line can be comparable to surface-water runoff in some instances.

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