charcoal root rot (Macrophomina phaseoli ) on flue-cured tobacco (Nicotiana tabacum (flue-cured type)) - 1402052

charcoal root rot
Macrophomina phaseoli (Maubl.) S.F. Ashby

Host: flue-cured tobacco (Nicotiana tabacum (flue-cured type) L.)
Descriptor: Symptoms
Description: Plants are usually predisposed to this fungus disease by certain practices such as the application of contact sucker control materials during hot weather. Irregular black lesions may extend from the soil surface to the top of the plant. A basal rotting of plants may occur, although roots are usually not affected . Stalks cut longitudinally exhibit appreciable pith and wood decay. In advanced stages, the pith may completely disappear resulting in a hollow stalk. Leaves of affected plants turn yellow, droop, and die.
Image type: Field
Image location: United States

Specimen Information

Specimen in collection: No
Specimen Condition:
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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: 1402052

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Node Affiliation: Bugwood - UGA

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Image uploaded on Sunday, March 10, 2002
Image Information last updated on Friday, February 25, 2011