In 1997, in an effort to save the Chesapeake Bay, Maryland enacted legislation to control farm runoff.

Red tides are caused by increase in nutrients that algae need, usually due to farm runoff, causing an overpopulation.

Over 90% of this pollution comes from farm runoff.

Projects to combat global warming and farm runoff won financing; so did plans to step up logging on public lands in the West and Alaska.

Reducing pollution from farm runoff is essential and relatively inexpensive.

Mr. Martin's "mess" is phosphorus in farm runoff.

It has done little to regulate farm runoff, a major source of water pollution.

These nutrients, in sewage, storm water, farm runoff and contaminated rivers, have damaged or destroyed many fisheries and shellfish beds.

In 1987, the states agreed to concentrate on controlling farm runoff into the bay, and in 1992 they enlarged the effort to include tributaries far upstream.

Along with nitrates and phosphates from farm runoff, this serves as a nutrient that encourages an overabundance of algae.