wildfire of tobacco (Pseudomonas syringae pv. tabaci) on flue-cured tobacco (Nicotiana tabacum (flue-cured type)) - 1402022

wildfire of tobacco
Pseudomonas syringae pv. tabaci (Wolf & Foster 1917) Young et al. 1978

Host: flue-cured tobacco (Nicotiana tabacum (flue-cured type) L.)
Descriptor: Symptoms
Description: This bacterial disease can occur in the plant bed or field. It most commonly occurs in the field in mid-summer during periods of cloudy, wet weather. Leaf spots develop, which are 1/4 to 1/2 inch in diameter and dark brown to black in color. They are limited by leaf veins making spots angular in shape. Concentric rings may be evident within the spots. Spots may coalesce, forming large irregular dead areas. The center of the spots may fall out, giving the leaf a ragged appearance. Leaves will turn yellow when numerous spots are present. Angular leafspot is most severe on 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: 1402022

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Image Citation:(?) R.J. Reynolds Tobacco Company Slide Set, R.J. Reynolds Tobacco Company, Bugwood.org

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Image uploaded on Sunday, March 10, 2002
Image Information last updated on Tuesday, May 17, 2011