This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA’s rich science and research portfolio.
When it rains it pours. Whether we get a passing shower or a day-long downpour, the runoff ends up in rivers, streams and waterways. That runoff may include nutrients from fertilizers, and one of those nutrients is phosphorus.
Phosphorus runoff is causing blooms of harmful algae that deplete waterways of oxygen, resulting in “dead zones” that damage ecosystems vital for aquatic life. It’s a problem in many of the waterways we all depend on for recreation and drinking water, including the Great Lakes and Chesapeake Bay. Just last year, Maryland’s outgoing governor proposed land use regulations designed specifically to reduce phosphorus runoff in the Chesapeake watershed.