Rogan Gibson, Allendale and Hampton County Extension Agronomy Agent
Nematodes are microscopic parasites (0.5 – 2.0 mm long) that live in the soil and feed on the roots of our row crops and other plants. Plants affected by nematodes can look stunted or yellowing (chlorosis)—nematodes cause most damage in the first four weeks after a seed germinates. Even though nematodes can be detected in almost every field in a row crop rotation in South Carolina, not all fields are affected by damaging populations.
Several species of nematodes cause problems in row crop fields in South Carolina. We need to pull samples to be tested to determine the species and population levels of nematodes in our soils. Samples must be taken as soon as possible after harvesting a crop, collecting at least 100mL of soil and digging up roots from the crop if feasible. You can also pull samples in problem areas during the growing season when symptoms are found to find the best rotation for the next season. Rotating crops is a good cultural practice to help control nematodes. Contact your local Clemson Extension Agronomic Crops Agent if you need assistance collecting nematode samples from row crop fields.
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