In warm weather, fields should be harvested daily. Damaged or thin shoots should be cut and discarded. After harvesting, spears should be washed, cooled, trimmed to a uniform length, and graded by diameter. Fusarium causes weak, spindly spear production. Feeder roots become rotted and discolored.
Affected crowns show reddish brown discoloration when cut.
See Reference 1. No thresholds are available. No varieties are resistant but Section 12.1 Recommended Varieties are more tolerant than older standards. Vigorous plants are less likely to be affected. Site selection Grow asparagus in fields that have never grown the crop before.