Information and Procedures for Soil, Plant Tissue, Nematology, and Grapevine Assay Testing

Collecting Soil Samples

Plant Tissue Samples

Nematology Assay Testing Laboratories

Laboratories - Virginia Tech will accept Maryland samples

Nematode Assay Laboratory

Virginia Tech
107 N. Kent Street
Winchester, VA 22601

Phone: 540-665-5699

Fax: 540-722-8380


Sampling procedure and the submission form (pdf)

For testing and submission procedures, contact:

Grapevine Diseases Assay Testing Laboratories

Testing laboratories that test grapevine leafroll, grapevine fanleaf, grapevine virus B, Pierce's disease, rupestris stem pitting virus, Red Blotch, etc.


Agri-Analysis LLC

Mailing Address

P. O. Box 285, Davis, California 95616
Phone: (800) 506-9852  |  Fax: (530) 757-4655

Sample Delivery Location:

Agri-Analysis LLC
950 West Chiles Road, Davis, CA 95618

Phone: (800) 506-9852  |  Fax: (530) 757-4655

AL & L Crop Solutions

Shipping Address
7769 N. Meridan Road
Vacaville, CA 95688

Phone: (530) 387-3270

Eurofins BioDiagnostics

Toll free phone number
(877) 866-3234


Eurofins BDI - River Falls

507 Highland Drive
River Falls, WI 54022
Phone: (715) 426-0246

Eurofins BDI - Longmont

1821 Vista View Drive
Longmont, CO 80504
Phone: (303) 651-6417

Sunburst Plant Disease Clinic

Send Samples:
677 East Olive Avenue
Turlock, CA 95380

Phone: (209) 667-4442
Fax: (209) 667-4443

Washington State University
Clean Plant Center Northwest

Street and Mailing Address:
24106 N. Bunn Road
Prosser, WA 99350

Phone: (509) 786-9230
Fax: (509) 786-9370


Pre-Plant BioRenovation and Soil Conditioning for New Vineyard and Small Fruit Plantings

While many sites are planted to small fruit crops with little soil preparation beyond conventional lime and fertility adjustments and seem to do well for some years, others show signs of early plant decline or never seem to reach their full productive potential. This latter scenario doesn't only occur with old sites where fruit had been planted previously, but can develop even on sites that are left fallow for many years.

Learn more >>

More information on soil testing and quality

  • Agricultural Nutrient Management Program
    The Agricultural Nutrient Management Program, which is funded by the Maryland Department of Agriculture (MDA), provides the following services: nutrient management plan development for Maryland farmers through a network of nutrient management advisors located in all 23 county Extension offices; and continuing education and technical support for certified nutrient management consultants and certified farm operators via state and regional nutrient management specialists.
  • Maryland Association of Soil Conservation Districts
    The Maryland Association of Soil Conservation Districts (MASCD) serves as the voice for Maryland's 24 soil and water conservation districts on state legislative issues. It also provides a forum for training, policy-making and the exchange of information at their annual and quarterly gatherings. MASCD's mission is to promote practical and effective soil, water, and related natural resources programs to all citizens through individual conservation districts on a voluntary basis through leadership, education, cooperation and local direction.
  • Soil Health: Soil Physical Properties (Web-Video)
    Soil health depends on the biological, physical and chemical properties of soil.  The video will talk about some of the physical properties of soil including organic matter, aggregate stability, water infiltration and compaction. By Penn State Extension
  • Web Soil Survey (WSS)
    WSS provides soil data and information produced by the National Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and provides access to the largest natural resource information system in the world. NRCS has soil maps and data available online for more than 95 percent of the nation's counties and anticipates having 100 percent in the near future. The site is updated and maintained online as the single authoritative source of soil survey information.

Timely Viticulture