Soil, Forage, & Water Testing Laboratory
ALFA Building
961 S. Donahue Drive
Auburn University, AL 36849-5411

Telephone: (334) 844-3958
Fax (334) 844-4001

Monday through Friday
7:00 am to 12:00 pm
1:00 pm to 5:00 pm

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  • Soil, Forage, and Water Testing Laboratory


Routine Soil Analysis

Soil samples are analyzed for pH, phosphorus, potassium, magnesium, and calcium. Customer information form. A soil test report detailing soil test values, ratings and, lime and fertilizer recommendations is sent to the customer by e-mail and/or regular mail within 24 hours after the samples are received by the lab by e-mail and/or regular mail.

Soil Quality & Soil Health NEW

Soil quality, also referred to as soil health, is defined as how well soil does what we want it to do. Healthy soil gives us clean air and water, bountiful crops and forests, productive grazing lands, diverse wildlife, and beautiful landscapes. The Soil Science Society of American defines "Soil quality" as "The fitness of a specific kind of soil, to function within its capacity and within natural or managed ecosystem boundaries, to sustain plant and animal productivity, maintain or enhance water and air quality, and support human health and habitation".

Special Soil Analysis

In addition to the routine analysis, soil samples are extracted by different methods and analyzed for calcium (Ca), magnesium (Mg), potassium (K), copper (Cu), iron (Fe), manganese (Mn), zinc (Zn), barium (B), cadmium (Cd), chromium (Cr), lead (Pb), sodium (Na), nickel (Ni) and others by ICP (inductively coupled plasma). Also, total nitrogen (N), carbon (C), sulfur (S), organic matter, nitrate (NO3-N), ammonium (NH4-N), particle size, soluble salts, alkalinity, electrical conductivity, saturated media extract for potting media, pecan package analysis and many others (see detailed menu here). These analyses will take more time to complete depending on the type of analysis requested and number of samples. Limited interpretations of the results will be provided upon requested.

Water Analysis

Water samples from irrigation systems, wells, and ponds are analyzed for NO3-N, calcium, potassium, pH, magnesium, phosphorus, copper, iron, manganese, zinc, boron, molybdenum, aluminum, cobalt, chromium, lead, sodium and soluble salts Limited interpretation of the test results will be provided.

Plant (Forage & Feed) Analysis

Forage and feed samples are routinely analyzed for percent moisture, crude protein, acid detergent fiber, neutral detergent fiber, nitrate-N, ash, pH, crude fat, lignin, total digestible nutrients (TDN), and elemental contents (Ca, K, Mg, P, Cu, Fe, Mn, Zn, etc.,) Relative forage quality (RFQ) will be provided for known common grass species when the analysis are done using near infrared reflectance (NIR). The turnaround time is normally within two weeks. The report includes name and e-mail of the Regional Extension agent or specialist for Animal Science and Forages. Upon request, reference publications such as Understanding Forage Quality will be provided to customers. For more information on forages, see the ACES Forages site.