An online calculator for N-P-K fertilizers.
Offers a wealth of information on gardening, horticulture, farming, and many other subjects.
- Nutrient Management Site
- Crop Calculators
- Minnesota Soil Management Series
- Nutrient Management for Commercial Fruit and Vegetables (PDF)
- Corn Fertilizer Bulletin
- A Soil N Test Option For N Recommendations With Corn (.doc)
- Phosphosus and Potassium
- Micro- and secondary nutrients
Can help further diagnose soil or plant problems.
Agricultural & Gardening Information
Online information from the U of Minnesota Extension Service
General background information on soils.
For University researchers and other public service agencies (inorganic chemical analyses available on a wide variety of materials).
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.