NeedleNematode F11006 A

Needle nematode

Description:  Transparent parasite that measures about ¼" but can only be seen under a microscope

Timing of damage:  V2 to V4

Type of damage:  Short stubby roots and yellow stunted plants. Needle nematodes feed on root tips from the outside of the roots.

Scouting:  A month after planting and before soils warm up, take a sample of the roots and soil. Place root with soil ball in a plastic bag and send to a nematology lab for testing.

Economic threshold:  One to five nematodes per 100 cubic cm of soil prior to planting

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