Soil expert: Banning phosphorous may not help Geneva Lake

From the Janesville Gazette

LAKE GENEVA-Not everyone is convinced a ban on urban phosphorus fertilizer will help keep lakes clear of excessive algae and lake weeds.

..."These are political decisions," Kussow said.

...A synopsis of the testimony showed disagreement over how much phosphorus gets into the lakes from urban lawns. Kussow said no more than 6 percent of phosphorus runoff countywide is from urban lawns, while another expert, Steve Carpenter, a UW-Madison limnologist, said the figure is more like 19 percent.

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