Fertilizer Calculator
An online calculator for N-P-K fertilizers.
The University Of Minnesota Extension
Offers a wealth of information on gardening, horticulture, farming, and many other subjects.
For Homeowners
For Farmers
- Nutrient Management Site
- Crop Calculators
- Minnesota Soil Management Series
- Nutrient Management for Commercial Fruit and Vegetables
- Corn Fertilizer Bulletin
A Soil N Test Option For N Recommendations With Corn
- Nitrogen
- Phosphosus and Potassium
- Micro- and secondary nutrients
Other
County Extension Offices & Educators
Can help further diagnose soil or plant problems.
Agricultural & Gardening Information
Online information from the U of Minnesota Extension Service
Natural Resources Conservation Service
General background information on soils.
U of MN Research Analytical Laboratory
For University researchers and other public service agencies (inorganic chemical analyses available on a wide variety of materials).
Department of Soil, Water, and Climate
This department has a wide variety of experts and researchers on issues related to soils and nutrient management and is the home department for the Soil Testing Laboratory.