Soil testing

Basic soil testing analyzes nutrient content and fertility status. Results include fertilizer and lime recommendations. Additional tests are available for nutrient management plans, environmental issues, potting mixes, compost, manure and water usage. Each sample should contain about 1½ cups of dry soil from 6 to 7 inches deep. Consult our soil testing publications for specific instructions. Results are typically provided within two weeks.

Crop producers and home gardeners can bring in field or garden samples to have the soil analyzed. Soil testing provides analysis of pH, phosphorus, potassium, calcium, magnesium, organic matter percent, neutralizable acidity, cation exchange capacity and effective neutralizing material (EMN). Customers will receive recommendations for nitrogen, phosphorus, potassium and liming (or acidifying). Tests for nitrate, boron, zinc, sulfur, iron, manganese and copper also are available at additional cost. For information on sampling methods, see G9215 Soil Sampling Pastures. Soil samples cost $14.50 each for basic testing.

Distance education test proctoring

MU Extension proctors tests for students enrolled in Mizzou Online courses.

Need to take a Continuing Distance final? Contact the Lewis County Extension Office at 573-767-5273 and we will set a date for you to come in to take your test.

Private pesticide applicator training

MU Extension provides private pesticide applicator training for producers as required for Missouri Department of Agriculture certification. Individuals must purchase or bring a copy of MU Extension publication M87, Private Pesticide Applicator Reference Manual, to the training. Manuals may be purchased at the extension center.

Call the Lewis County Extension Office at 573-767-5273 to schedule an appointment to view the three-hour training DVD.


MU Extension has publications on agriculture, natural resources, lawn and garden, home and consumer life, nutrition and health, families, community and leadership development, business and careers, emergency management and other topics. Prices vary by publication. 

Hay testing

Mailing materials and probes, or hay samplers, for forage testing by commercial labs are available as a convenience to our clients. Probes/samplers are recommended to get a proper sample.