Farmers, scientists aim to manage risks of nitrogen fertilizer
Researchers at the University of Regina and the University of Saskatchewan tested the urea fertilizer, which helps feed two-thirds of the global population. After adding it to farm ponds, they found the product degraded water quality and is a widespread threat to freshwater sources.
https://www.cbc.ca/news/canada/saskatchewan/farmers-scientists-aim-to-manage-risks-of-nitrogen-fertilizer-9.7170658?cmp=rss