/tags/environmental-working-group environmental working group en-US Copyright Wed, 17 Apr 2019 14:17:36 GMT /ideastream/2019-04-17/study-manure-bigger-problem-for-lake-erie-algae-than-previously-thought One of the conundrums in the effort to halt toxic algal blooms in western Lake Erie, near Toledo, is why phosphorus levels continue to rise, even though farmers in the Maumee River watershed have been using less fertilizer. Two environmental groups think manure is playing a larger role than researchers have previously thought. Wed, 17 Apr 2019 14:17:36 GMT /ideastream/2019-04-17/study-manure-bigger-problem-for-lake-erie-algae-than-previously-thought