Target spot is caused by the sexual stage of the soil-borne fungus, Rhizoctonia solani. This pathogen produces large target-like spots that have concentric circles. (Photo: Kenneth Seebold, UK)

Target spot initially develops on lower leaves. (Photo: Kenneth Seebold, UK)

Tobacco leaf tissue becomes chlorotic (yellow) around target spot lesions. (Photo: (Kenneth Seebold, UK)

Eventually, the centers of target spot lesions drop out, leaving holes. (Photo: Kenneth Seebold, UK)

Target spot can result in considerable loss of leaf tissue. (Photo: Kenneth Seebold, UK)