Conservation farming practices could help reduce the Gulf of Mexico's 'dead zone' that harms marine life and fishing

When Midwestern farming states steer around conservation practices and use more synthetic fertilizer and manure, their crops' run-off flows into the Mississippi River and contributes to the Gulf of Mexico's 'dead zone,' reports Erin Jordan of The Gazette, which serves Cedar Rapids, Iowa. "There are thousands of U.S. farmers not growing cover crops or using other conservation practices shown to reduce runoff. . . thwarting plans to slash nitrogen and phosphorus washing down the Mississippi River to the Gulf of Mexico, where excess nutrients threaten wildlife and fishing industries." Encouraging or requiring farmers to use more conservation practices could change this trend.

What is the dead zone and why should farmers care? The zone is produced by chemicals and element run-offs of nitrogen and phosphorus that flow down the Mississippi and into the gulf. Once in the gulf, "these nutrients are required for plant and crop growth, trigger algae blooms that choke off oxygen in water and make it difficult, if not impossible, for marine life to survive," reports The Nature Conservancy. "The National Oceanic and Atmospheric Administration estimates that the dead zone costs U.S. seafood and tourism industries $82 million a year. The impact could be devastating to the gulf’s seafood industry."

Originally, the United States pegged 2025 as the year for nitrogen and phosphorus flows into the gulf to be reduced by 20%. But the country is far from reaching this goal.