ANN ARBOR (AP) -- A ban, similar to one adopted in Wisconsin back in April, has been credited for a 28 percent drop in phosphorus levels in the Huron River.
University of Michigan researchers say the phosphorous pollution was due to a chemical in fertilizer, which Wisconson banned.
Professor John Lehman and students Douglas Bell, Kahli McDonald and Julie Ferris studied the phosphorus levels. The findings were published online Friday in the journal Lake and Reservoir Management.
High phosphorus levels can kill fish and cause smelly algae blooms. Ann Arbor adopted limits on fertilizer use in 2006.
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