Nutrient Reduction

Kate Payne / IPR

Federal agencies and local leaders are committing to work together to expand water quality monitoring on the Mississippi River. Representatives from the U.S. Geological Survey, the Army Corps of Engineers and the Department of Transportation signed the agreement Wednesday with a coalition of mayors from up and down the Mississippi.

Amy Mayer / IPR

An increasing number of farmers is using cover crops to keep water, soil and nutrients from running off fields. But while many studies have shown the agronomic and environmental benefits of the plants that come up after cash crops such as corn or soybeans get harvested, it’s been harder to determine whether a farm business will recover the initial planting cost.

Kate Payne / IPR

Iowa is a leading contributor to the so-called dead zone in the Gulf of Mexico. The low-oxygen area the size of Connecticut can kill fish and sea life. And it’s largely fueled by the runoff from Midwestern farm fields. Five years after the state created a plan to slow this process, researchers say Iowa isn't moving fast enough to cut its nutrient runoff.