Phoma blight (Phoma exigua var. exigua) on burley tobacco (Nicotiana tabacum (burley type)) - 1440027

Phoma blight
Phoma exigua var. exigua Sacc.

Host: burley tobacco (Nicotiana tabacum (burley type) L.)
Descriptor: Symptoms
Description: Spots are tan colored, with minute dark circular specks present on the surface of the spot. Brown spot and ragged leaf spot may be confused. The presence of distinct, circular, black fruiting bodies (pycnidia), which may be seen under magnification, distinguishes this disease from brown spot. The tissue in the spot may become papery-thin, tearing easily and giving the spot a ragged appearance. This disease is usually of minor importance, showing up late in the season on the lower leaves.
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: 1440027

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Node Affiliation: Bugwood - UGA

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Image uploaded on Monday, January 01, 1990
Image Information last updated on Wednesday, March 16, 2011