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Free nematode testing for Mississippi sweetpotato producers

Effective Dates: March, 2023 through December 31, 2024


  1. A regular nematode sample submission form (F448) MUST be completed and accompany all soil samples submitted for nematode analysis. This form is available at
  2. Soil MUST be from Mississippi sweetpotato fields


  • Use nematode bags from your county Extension office, or quart-size sealed plastic bags.
  • Fill bags with approximately 1 pint of soil
  • Label each bag for your reference and write each label down in the Sample Name column on the nematode sample submission form.
  • Keep samples cool (do not freeze). Do not expose soil samples to high temperatures or direct sunlight. Do not let samples dry out (make sure bags are sealed tightly)/ DO NOT ADD WATER.
  • Mail samples to:
    • Extension Plant Diagnostic Lab
      405 Garrard Rd. East
      Mail Stop 9612
      Starkville, MS 39759

OR, samples may be brought directly to the lab: Bost Extension Center, Room 10

Service Provided

The diagnostic lab will process soil samples in our usual manner and provide our usual report detailing the type and quantity of all plant parasitic nematodes found in the soil. Identification will only be to genus level (i.e. renifom (Rotylenchulus sp.) or root-knot (Meloidogyne sp.)).

Dr. Lorin Harvey is covering the cost of this service with an HR133 specialty crop block grant from the Mississippi Department of Agriculture and Commerce.

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Filed Under: Sweet Potatoes, Soil Testing, Plant Disease and Nematode Diagnostic Services March 23, 2023

Sweet potato growers in Mississippi can get free nematode testing of soil samples they send to Mississippi State University from now until Dec. 31, 2024. The samples can be submitted in nematode bags available at local county MSU Extension Service offices; samples are also accepted in quart-sized, sealed plastic bags.

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Filed Under: Soil Health, Plant Disease and Nematode Diagnostic Services, Soil Testing August 31, 2020

The Mississippi State University Extension Service is offering another year of free testing for often overlooked nematode pests that frequently cause poor crop performance.

Filed Under: Insects-Crop Pests, Soybeans, Plant Disease and Nematode Diagnostic Services December 12, 2018

The Mississippi State University Extension Service will offer free testing for a significant crop pest through Aug. 30, 2019.

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David Fulgham did not hesitate to show his support for the Mississippi State University Extension Service Plant Pathology Diagnostic Lab when his chance came.

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