Surrounded by some of the world’s richest soil and home to two major grain processing plants, Decatur has long been a hub for agribusiness in the United States. One major trade-off comes in the form of excess nutrients, specifically nitrogen and phosphorus, that runoff from fertilizers used on local farm fields and from discharges from
The dead zone in the Gulf of Mexico, which is believed to have been around since the 1970’s, is now an estimated 6,474 square miles of water unable to support marine life. Government and independent scientists believe nutrient runoff is the main cause of the dead zone. Pollutants such as nitrogen and phosphorus flow into
An estimated 9 to 10 percent of Wisconsin wells have tested over safe limits for nitrate. Studies have estimated that 90% of nitrate in groundwater comes from spreading of synthetic fertilizers and dairy manure on farm fields, with most of the remainder from septic systems. Nitrate behaves differently. Relatively little lingers near roots where it