University of Iowa Hydroscience and Engineering

Mandating measures to control and reduce chemical pollution from farm fields should begin, University of Iowa water quality researchers say.

But, don't expect Iowa's land-grant agricultural institution – Iowa State University – to join the call for regulation or any government measures to limit the use of fertilizer on ag land.

Researchers at the University of Iowa Hydroscience and Engineering Department have been analyzing farm field runoff of nitrogen and phosphorus for decades.