Agronomic Services - Nematode Assay


Plant-parasitic nematodes are microscopic threadworms, most of which live in the soil and feed on plant roots. The Nematode Assay laboratory analyzes soil and plant material  for the presence of plant-parasitic nematodes. Results and recommendations may be used to increase crop yields, save on pesticide costs and minimize runoff of harmful chemicals into surface or ground waters. A nematode assay can:

  • predict a nematode problem on a specific crop for an upcoming season
  • diagnose an existing nematode problem
  • suggest appropriate management strategies

The Agronomic Division accepts nematode assay samples from both individual growers and research institutions.  Select the submission process that best describes your operation. If you are uncertain about your submission category, please contact the laboratory Section Chief or Agronomist.

Column Paragraph

Frequently Asked Questions

Tab/Accordion Items

After harvest in the fall

October-November (usually 2 weeks)  December – February (4-8 weeks)

yellowing, dying, dying patches   

Just make sure to brush/knock off the soil in between samples

Go to our Field Services page. Click on the county you are from and that will give you the contact information for a Regional Agronomist assigned to your area.

Contact Information

Weimin Ye, Ph.D.

Section Chief 919-664-1607

David Allgood

Nematode Molecular Diagnostician 919-664-1612