The TPDDL can assist with any type of  plant disease problem. Field crops, trees, turfgrass, vegetables, fruits, flowers, shrubs, houseplants, or any other type of plant are welcome. Lab tests are available for the detection of most plant pathogens. We can only test soil for nematode detection. For testing of most diseases of Upper Plains field crops, please contact the THPPDDL. 

* For palm phytoplasma detection, please see the following document for sampling guidance: Sampling Guide for Palm Phytoplasma 

For nematode detection assay, see form D-827: https://plantclinic.tamu.edu/forms/d827/   

For commercial grape growers, see form D-1004: https://plantclinic.tamu.edu/forms/d1004/