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A long-running East Texas testing facility

Established in 1952, the Soil, Plant and Water Analysis Lab provides the East Texas community with a variety of testing services. Whether you are a commercial rancher interested in optimizing your hay growth or a homeowner on a quest to plant the perfect East Texas lawn, this laboratory can provide you with the information you need. 

In addition to providing a valuable service to the community, the Soil, Plant and Water Analysis Lab also functions as a teaching and research facility for SFA faculty and students.  

The Soil, Plant and Water Analysis Lab offers the following tests:

Soil analysis

The lab offers a variety of soil tests:

  • The regular soil test determines pH and liming requirement, measures nitrate-nitrogen, and estimates availability of plant macronutrients (phosphorus, potassium, calcium, magnesium and sulfate-sulfur) from Mehlich-3 extracts.
  • The complete soil test builds upon the regular test to which it adds DTPA-extractable micronutrients (iron, copper, zinc and manganese).
  • The potting media test determines levels of water soluble macronutrients, micronutrients, nitrate-nitrogen, chloride and sulfate from saturated paste extract.

Additional soil tests are available, including soil texture determination, detailed salinity analysis and more.

Download our soil sample information sheet to get started!

Water analysis

The standard analysis is designed primarily for irrigation water. The regular water analysis includes pH, electrical conductivity, alkalinity, chloride, nitrate-nitrogen, and sulfate, and dissolved levels of sodium, calcium, magnesium, potassium, iron, and phosphorus. 

Download a standard water sample information sheet to get started!

Forage and plant tissue analysis

The lab offers forage testing and non-forage plant tissue analysis:

  • The regular soil test determines moisture content, crude protein, acid-detergent fiber and calculates total digestible nutrients. A “protein only” test is also available.
  • The complete test builds upon the regular test and offers the total concentration of mineral nutrients (phosphorus, potassium, calcium, magnesium, sodium, sulfur, iron, manganese, copper, zinc and boron).
  • The nitrate and prussic acid analyses are designed for producers concerned about nitrate toxicity or prussic acid poisoning, respectively.
  • The non-forage plant tissue analysis determines total nitrogen, phosphorus, potassium, calcium, magnesium, sodium, sulfur, iron, manganese, copper, zinc and boron.

Download our forage information sheet to get started!

Manure testing

The manure test determines moisture content and the total concentration of mineral plant macro- and micro-nutrients: nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, copper, and zinc.

Download a standard manure sample information sheet to get started!

Additional testing and pricing

Additional types of testing, such as lime quality analysis are also available through the Soil, Plant and Water Analysis Lab. View our complete list of services and pricing, or download a custom information sheet.

For more information about testing and pricing, contact the lab by calling 936.468.4500 or email sfasoilslab@sfasu.edu.

Have questions? Need more info? Want to schedule a tour? 

To schedule a tour of the Soil, Plant and Water Analysis Lab, to discuss lectures or presentation opportunities or if you have questions about soil, plant and water testing, please contact Dr. Franta Majs by email at majsf@sfasu.edu or call 936.468.4390.

Hours of operation

Hours:
8 a.m. to noon; 1 to 5 p.m. Monday through Friday
Closed for university holidays

On-site dropbox
Outside of the regular business hours, soil samples can be left in a dropbox in front of the building. Please do not leave any other samples in the dropbox.

Contact

Soil, Plant, & Water Analysis Lab
936.468.4500
sfasoilslab@sfasu.edu

Agriculture Building
Room 122

Address for USPS shipment:
P.O. Box 13025, SFA Station
Nacogdoches, Texas 75962

Address for freight service (e.g. FedEx or UPS):
1924 Wilson Drive, Room 122
SFA Agriculture Building
Nacogdoches, TX 75964

Request Information for Future Students

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