The Nitrogen Rate Study on Coarse-Textured Soil (N Rate Study) was done in 2015-2018 by the University of Minnesota (U of M) and Central Lakes College (CLC) at CLC’s farm in Staples, MN. The study examined nitrogen fertilizer rates for corn on sandy soil—with and without irrigation. The study specifically considered potential nitrogen loss from dryland corn versus irrigated corn and was established after the U of M released new nitrogen rate guidelines in early 2015.
The Minnesota Department of Agriculture (MDA) is working with partners at the Rosholt Farm in Westport, Minnesota to provide a better understanding of nitrogen fertilizer management and the associated water quality impacts on irrigated, sandy soils.
