Soil Testing and Research Laboratory


Mission Statement

The mission of the Marianna Soil Test Laboratory is to provide accurate and timely routine soil analyses and unbiased nutrient management guidelines that are based on the best available science to Arkansas residents.



Monday September 3, 2018, the Soil Testing Laboratory will be closed for the Labor Day holiday. We will be open to receive samples again on Tuesday, September 4, 2018, at 8:00AM. This is an official holiday for the University of Arkansas.

Lab Hours

Monday through Friday 8:00 AM to 4:30 PM

Contact Us

If you have any questions please call us at 870-295-2851 or email us at

About Us

The Marianna Soil Testing Laboratory is part of the University of Arkansas System Division of Agriculture and is located in Marianna, AR adjacent to the Lon Mann Cotton Research Station.  We are located 3 miles south of Marianna on Hwy 1.