A reminder that starting September 1, 2020, the application of nitrogen fertilizer in the fall and on frozen soil will be restricted in areas vulnerable to groundwater contamination.

A new nitrogen rule is now in place. Nitrate contamination can be a significant localized issue due to sandy-textured soils, shallow distance to groundwater, and heavy irrigation use. Crop failure and water stress under dry land conditions can also lea

The majority of the Vermillion River Watershed and Dakota County is within the area vulnerable to groundwater contamination.

To find out if you are in a restricted area, please see the Minnesota Department of Agriculture’s interactive map.d to nitrate leaching losses.