CURRENT NITROGEN and phosphorus applications in the Midwest have been connected to increasing water quality problems.
Gonzalez-Ramirez, M. Jimena; Kling, Catherine; Arbuckle, J. Gordon; Morton, Lois Wright; McGuire, Jean; and Benning, Jamie
"Cover Crop Adoption Decisions in Iowa: Insights from an In-Person Survey,"
Agricultural Policy Review: Vol. 2017
, Article 3.
Available at: https://lib.dr.iastate.edu/agpolicyreview/vol2017/iss2/3