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.
A contractor with knowledge of Site Specific Standard development will respond to U.S. Environmental Protection Agency (EPA) questions and concerns regarding attainability of standards based on the BATHTUB model data. In addition, they will review technical memorandums developed by Minnesota Pollution Control Agency (MPCA) on aquatic life and aquatic recreational standard attainability.
RESPEC is a contractor with knowledge of site-specific standard development and will respond to United States Environmental Protection Agency questions and concerns regarding attainability of standards. The response will be based on bathtub model data and also a review of technical memorandums developed by the Minnesota Pollution Control Agency on aquatic life and aquatic recreational standard attainability.
The Minnesota Department of Agriculture (MDA) has designed a Township Testing Program to determine current nitrate-nitrogen concentrations in private wells on a township scale. The MDA has identified townships throughout the state that are vulnerable to groundwater contamination (because of local geology or shallow groundwater) and have significant row crop production. These are the counties that will be prioritized for Township Testing.