World-Herald editorial: Nitrate issue confronts Iowa
World-Herald editorial: Nitrate issue confronts Iowa By Omaha World-HeraldJanuary 29, 2015Rain is a welcome sight to Midlands farmers. But that rainfall, along with melting snow, poses a problem when drainage carries away agricultural nutrients such as nitrogen and phosphorus that can build up to environmentally harmful levels. Perhaps the nation’s most troubling example is the [...]