Nematode Sample Collection Instructions

• Diagnostic sampling for initial detection of a nematode problem:
  • Separate samples from healthy and affected areas are essential for a reliable diagnosis of nematode damage. Collect several soil and root cores to a depth of 6 to 8 inches from the margin of the affected area. The soil cores should be bulked, mixed, and subsampled. Repeat the sampling process nearby in the healthy area. Submit 1 pint of soil and roots. Include the plants if possible.
• Advisory sampling for management purposes (for soybean cyst):
  • Collect samples prior to planting. Divide the field into sections based on soil type and cropping history. From each section collect at least five soil cores taken at a depth of 6 to 8 inches. The soil cores chould be bulked, mixed, and subsampled. Submit 1 pint of soil.
• Sampling for pine wilt:
  • Collect a branch at least 2 inches in diameter and 6 to 8 inches long from adjacent to the trunk of the tree.

Place sample in plastic bag immediately after collection and keep cool until shipping. Do not add water to the sample. Mail early in the week (Monday – Wednesday).

Allow 1-2 weeks for a reply.