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


State of Minnesota

Natural Resources Conservation Service

General background information on soils.

UMN 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.