Fusarium Stem and Root Rot

DISEASES

Fusarium Stem and Root Rot
(Fusarium solani/Nectria spp.)
Most susceptible plants: exacum
Infection by this fungal pathogen can cause rapid wilt and plant decline. This disease can easily be confused with Impatiens Necrotic Spot Virus and Botrytis stem infection.
Symptoms:
Typical symptoms develop as off-color foliage initially, with a progressive desiccation and wilt of branch sections or commonly, one side of the plant. Eventually, the entire plant may yellow, wilt and die. Examination of the lower stem commonly shows a whitish fungal growth in association with an obvious lower stem rot. Small, reddish round balls, which represent the Nectria stage (the sexual stage) of the fungus are commonly observed.
Control:
Remove infected plants as soon as symptoms are observed. Preventative drench-applied fungicides have shown good control of this disease.