- Outer leaves die first. Previous crop may have been potatoes or other solanaceous crop. Symptoms are most pronounced in the planting year.
- Individual plants suddenly collapse and die even though moisture is adequate.
- New plants exhibit poor and uneven growth. Crowns are brown on the interior.
- New plants exhibit poor growth. Leaves were elongated and yellow or white prior to planting.
- Roots are stubby and chewed. Fat, white insect larvae are found in the soil near the roots.