Matching Conservation Drainage Practices with Nitrogen Application Rates and Sources for Minnesota

University of Minnesota/Gary Sands

The overall goal of the proposed project is to improve profitability and environmental impact on drained agricultural lands through conservation drainage approaches and different application rates and sources of fertilizer. Building on an existing Minnesota Corn Growers project, this project will involve the creation of drainage design tables for southern Minnesota (for seven benchmark soils and three locations) based on the principle of maximizing net return on investment and conserving water and nutrients in the field, using both alternative drainage practices and different nitrogen application rates and sources. The design tables will be offered to drainage practitioners in multiple formats, and will be available at the Drainage Outlet website,