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Soil Testing and Research Laboratory
Ark. Hwy. 1 South
P.O. Drawer 767
Marianna, AR 72369
Dr. Morteza Mozaffari, Director


Division of Agriculture’s Soil Testing and Research LaboratoryConstruction starts on expansion, renovation of Soil Testing and Research Laboratory

A nearly year-long project to renovate and expand the University of Arkansas System Division of Agriculture’s Soil Testing and Research Laboratory got under way Sept. 19 with ground being broken for the new facility. The facility’s receiving and laboratory buildings will be replaced with new and larger ones and the existing office wing will be improved.


The Soil Testing and Research Laboratory at Marianna is adjacent to the Dan Felton, Jr., Building at the Lon Mann Cotton Research Center.

Laboratory Director Dr. Morteza Mozaffari
presents results of a research
at a Division of Agriculture field day
The Laboratory provides free soil testing services for Arkansas residents. The farmer or homeowner is provided a report on soil nutrient levels and a recommendation for fertilizer and lime applications for the desired use, location and condition of the sample site.

Soil Samples must be submitted through a county Cooperative Extension Service (CES) office. The CES office will provide sample containers and submission forms as well as instructions for proper soil sampling and will mail the samples to the Soil Testing Laboratory.

Additional services are provided for analysis of soil organic matter, plant tissue nutrient levels and soil texture.

The Laboratory also conducts extensive research on soil and plant nutrition management in cooperation with other Division of Agriculture scientists.

Funding for the Laboratory is provided by a fee assessed by the State of Arkansas on fertilizer sales in the state. The Laboratory tests approximately 100,000 soil samples and 5,000 plant samples annually.


University of Arkansas System
Division of Agriculture
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Copyright © 2014


University of Arkansas System • Division of Agriculture
Arkansas Agricultural Experiment Station
E214 AFLS Building
Fayetteville, AR 72701 • USA
Phone (479) 575-4446
Fax (479) 575-6363

University of Arkansas System • Division of Agriculture
Cooperative Extension Service
2301 South University Avenue
Little Rock, Arkansas 72204 • USA
Phone (501) 671-2000