The amount of phosphate fertilizer sold in Dane County has declined since the 1970s, as farmers better manage nutrient inputs to crops.
Data sources: U.S. Geological Survey, Gronberg and Spahr (2012), Alexander and Smith (1990)
WATER SUSTAINABILITY AND CLIMATE
IN THE YAHARA WATERSHED
University of Wisconsin-Madison
Madison, WI 53706
This material is based upon work supported by the National Science Foundation under grant DEB-1038759. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
