Newspaper is removed when seeds germinate. Plants are rated as susceptible, intermediate or resistant 6-8 days after inoculation. Lesions on susceptible plants are brown with chlorotic halos. Lesions enlarge and coalesce. Lesions on resistant plants are tan, surrounding tissue remains green.
Lesions remain small and localized.
On intermediate plants a yellow-green halo surrounds the lesion and tissue around the lesion often puckers. Resistant, intermediate, and susceptible plants can be transplanted to steam sterilized soil.