Test My Soil
The Soil Quality Test Kit Guide
USDA. Natural Resources Conservation Service.
Contains procedures for 12 on-farm tests, an interpretive section for each test, data recording sheets, and a section on how to build the kit.
University Related Plant Disease and Soil Testing Services (PDF | 160KB)
Purdue University. Department of Botany and Plant Pathology.; Gail Ruhl.
Provides contact information for soil and plant problem diagnostic services affiliated with land-grant universities and Extension offices.
Soil Testing Services in Canada and the United States of America
Cyber-Help for Organic Farmers.
Lists contact information for soil testing services in both Canada and selected States.
Alternative Soil Testing Laboratories
National Center for Appropriate Technology. ATTRA - National Sustainable Agriculture Information Service.
Provides information about soil testing laboratories and supplies that meet the special needs of farmers using organic or sustainable production practices.
Soil Testing is an Excellent Investment for Garden Plants and Commercial Crops (PDF | 548KB)
Ohio State University. Cooperative Extension Service.
Answers questions about soil testing and provides information about laboratory names, addresses and the types of tests they offer.
Certified Soil Testing Laboratories
Minnesota Department of Agriculture.
Compiled for Iowa, Illinois, Indiana, Kentucky, Minnesota, Nebraska, North Dakota, Ohio, and Wisconsin, and includes the types of tests offered by each laboratory.