frog-eye leafspot (Cercospora nicotianae ) on burley tobacco (Nicotiana tabacum (burley type)) - 1440028

frog-eye leafspot
Cercospora nicotianae Ellis & Everh.

Host: burley tobacco (Nicotiana tabacum (burley type) L.)
Descriptor: Symptoms
Description: Frogeye may develop on the leaves of tobacco in the plant bed, field, or barn. The spots on the leaves are quite distinct, typically circular, with a reddish-brown margin and tan or grey colored papery centers in which black masses (fruiting bodies) of the fungus may be found. Frogeye usually occurs on the lower leaves but moves up the plant as the season progresses, especially as the nitrogen supply is depleted. Sudden development of large dead in the upper leaves may occur near harvest. Frogeye may be confused with brown spot, wildfire, angular leaf spot, weather fleck, and physiological spotting, and it requires microscopic examination for diagnosis. Green spots on the leaves of cured tobacco may be the result of frogeye infection near harvest.
Image type: Field
Image location: United States

Specimen Information

Specimen in collection: No
Specimen Condition:
Identification Method:

Photographer Information

Name: R.J. Reynolds Tobacco Company Slide Set
Organization: R.J. Reynolds Tobacco Company
Country: United States

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Image Number: 1440028

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Node Affiliation: Bugwood - UGA

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Image uploaded on Monday, January 01, 1990
Image Information last updated on Tuesday, May 17, 2011