Soil Testing

Regular testing helps develop and maintain more productive soils for farming, gardening, and landscaping. Soil tests indicate whether plant nutrients are deficient and, if so, what amounts are needed for maximum growth. Soil testing is also a useful diagnostic tool to identify problems related to excessive levels of nutrients and salts, high pH, low organic matter, and poor drainage. When properly interpreted, soil tests promote more favorable conditions for productive and aesthetically pleasing gardens and landscapes.

Pick a Test

Hands holding soil

The Utah State University Analytical Laboratories (USUAL) provides testing and analysis services for soil, animal feed, manure, plant tissue, and irrigation/livestock water. Information about process and payment can be found by clicking the link below.

Select a Form

Collect Your Sample

man digging in soil with shovel

Get The Sample
For standard topsoil, dig 6 to 12 inches deep. For turf samples, dig 6 inches deep. Samples need to be taken in several places.

Mix It
Mix soil samples in a clean bucket or container. If chunks remain in your sample, don't hesitate to break them apart. 

Keep Two Cups
Place two cups of soil into a quart-sized, heavy-duty resealable plastic bag in a small USPS mailing box. Include a completed order form. 


mailing package

Mail your sample via US Mail, UPS, FedEX, etc., send samples to:

USU Analytical Labs
9400 Old Main Hill
Logan, UT 84322-9400

Be sure to include a completed form and payment with delivery.