Fertilizer Calculator
An online tool for optimizing N-P-K fertilizer application and cost.
University Of Minnesota Extension
Offers a wealth of expertise on gardening, horticulture, farming, and many other subjects.
Nutrient Information
For Homeowners
- Soil Test Interpretations and Fertilizer Management (PDF)
- Yard & Garden Info
- Urban Gardens and Soil Contaminants (2010) - collaboration of the Extension, Minnesota Institute for Sustainable Agriculture and Hennepin County.
- Lead in the Home Garden and Urban Soil Environment (2016)
For Farmers
- Nutrient Management Site
- Crop Calculators
- Crop Production
- Minnesota Soil Management Series
- Nutrient Management for Commercial Fruit and Vegetables (PDF)
- Corn Fertilizer Bulletin
- Fertilizing Corn in Minnesota (2022)
- A Soil N Test Option For N Recommendations With Corn (.doc)
- Manure Management (this information replaces bulletins AG-FO-5879C, 5880C, 5881C, 5882C, and 5883C).
Other
State of Minnesota
- Minnesota Department of Agriculture (MDA)- Gardening in Urban Soil (updated 11/2021)
- MDA Gardening in Urban Soil website
- MDA Lead Contaminated Soil website
Natural Resources Conservation Service
General information on soil and soil conservation.
UMN Research Analytical Laboratory
Inorganic chemical analyses on environmental samples and man-made materials for University researchers and other public service agencies.
Department of Soil, Water, and Climate
This U of MN Department has a number of researchers and experts focusing on issues related to soil, plant growth, and nutrient management.