Texas A&M AgriLife Extension
Soil, Water and Forage Testing Laboratory
About the lab
The Texas A&M AgriLife Extension Service Soil, Water, and Forage Testing Laboratory provides research-based analyses for Texans and our neighbors throughout the continental United States.
The laboratory focus is on plant nutrient analyses in soil, elemental plant analyses, forage nutritive analysis, and bio-solid analyses for beneficial soil application and non-drinking water analysis.
The Laboratory is open from 8 a.m. to 5 p.m., Monday-Friday; however, it follows the Texas A&M University Holiday and Closure Calendar.
Laboratory email address: soiltesting@ag.tamu.edu
Sending samples to the laboratory:
Mailing through USPS address: Texas A&M AgriLife Extension Service Soil Testing Laboratory 2478 TAMU College Station, TX 77843-2478 Shipping through other Couriers address: Texas A&M AgriLife Extension Service Soil Testing Laboratory 2610 F&B Road College Station, TX 77845 979-321-5960 Please note: our phone number has changed effective December 7th, 2023.
All samples must include hardcopy submittal forms or sample information entered through our online payment system.
Listing of Laboratory Methods
References to the methods used by the laboratory
Soil Fertility/Nutrient Recommendations
Listing of current nitrogen, phosphorus and potassium recommendations based on soil test values, crop and yield goals.
Sampling and Shipping Instructions
Sampling and Shipping Instructions
Fertilizer and other helpful calculators
Two groups of calculators can be accessed below.
Submittal forms, Pricing and Payment Information
View our submittal forms and get information on which tests to choose and how to fill out each form.
Publications
Read various publications and journals submitted by the lab.