In the Furrow
Soil & Nematode Sampling
By Will Duffie County Extension Coordinator

Burke County farmers are busy gathering crops during the fall harvest season. Even

though time is in short supply, the ideal time to begin preparing for the 2008 crop

is now.

Sampling fields for nematodes should be done during October and early November, prior to the soil temperature dropping.

For those who are not familiar with nematodes, they are microscopic worms that feed on plants' roots. Nematodes cause economic damage to many row crops, turf grasses, ornamentals, and vegetables. These parasites feed on the roots depriving plants of nutrients leading to plant decline or death. For the homeowner, many times a dying plant may be caused by nematodes.

In order to make a sound economic decision on nematode control, determine which species are present and the level of infestation by taking a soil sample. To take a soil sample for a nematode assay, sample in the root zone to a depth of about 8 inches. Take 25 to 30 cores from each 5 acres or designated zone. Thoroughly mix the cores together and place 1 quart of the soil in a plastic bag. Store the soil in a cool location. It is best to take samples when soil moisture is right for good seed germination and be sure not to take samples from extremely dry soil. Do not allow samples to get hot or dry. If samples sit in direct sunlight or in a hot vehicle the nematodes may be killed. Nematodes must be alive for the lab procedure to work. Bring the soil and complete an information form at the county extension office.

Another topic I want to quickly address is taking routine soil samples. These samples determine the nutrient content and pH of the soil. Farmers can get ahead of the lime game if they could begin sampling fields as soon as possible. Sampling a few farms in the near future and ordering lime accordingly could help in reducing the future lime delays.

For more information on nematodes and management practices contact the UGA - Burke County Extension Office at 706-554-2119.