Other Resources

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



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.