Fusarium root rot is characterized by brick-red lesions of variable size with diffuse margins that develop on belowground stems and tap roots. The red color gradually turns brown with age.
Longitudinal fissures develop in the cortical tissue of affected areas.
In severe infections, the entire root system may be attacked and destroyed. In some plants, roots are initiated above the lesion. The causal fungi survive for several years as chlamydospores in the soil. Provide optimal growing conditions, avoiding stress caused by excess water, prolonged drought, soil compaction, etc. Although no bean line is immune, some cultivars are more tolerant to the disease than others.