Round lesions with diffuse, dull yellow margins on the upper leaf surface and olive-brown fungus on the lesion underside . . . Lesions brown to black, circular to elliptical with concentric zones present on leaf spots . . . Fruit spots have a mottled mahogany-colored appearance . Foliar infection rare, with no fungal sporulation on leaf undersides. Prevalent fruit infection similar to late blight occurs on blossom end and is broadly zonate . . .
Verification requires a hand lens . . .
Black, velvety fungal growth often evident on lesions . . . Fruit lesions may be larger but are similarly zoned . . . Fruit zonation extends into apparently healthy tissue . . . Continue selecting the BEST description of the symptoms. Upper leaflets curl downward . . .