Worm-like creatures hatch from eggs in soil or on roots and enter roots where they feed. Severely infected plants appear stunted and sickly. They wilt easily in dry weather, but may recover at night for a period of time before dying. Nematode damage also makes plants more susceptible to and increases severity of Fusarium wilt. Yield may be reduced up to 80 percent.
Damage is most severe in light, sandy soil.
The major symptom is knots or galls that cover the roots. For nematode control, do not plant in soil where infected crops have been grown within the past two seasons. Examine the plants carefully for knots or galls on the roots. Verify presence of nematodes and dispose of transplants. Plant resistant tomato varieties.