weather fleck (  ) on flue-cured tobacco (Nicotiana tabacum (flue-cured type)) - 1402062

weather fleck

Host: flue-cured tobacco (Nicotiana tabacum (flue-cured type) L.)
Descriptor: Damage
Description: Soon after exposure to high levels of atmospheric pollutants, leaves may develop dark green water-soaked spots about 1/10 inch in diameter. Within hours, the spots turn dark brown, sometimes remain brown, but often turn white within 48 hours. Symptoms occur most often in low areas of fields. Plants are most sensitive when growing rapidly (plant bed and 4-6 weeks after transplanting), but symptoms may appear at any stage of growth. In the plant bed or on very sensitive varieties, spots appear over the entire leaf surface but are usually confined to the leaf tips of less sensitive varieties. Occasionally spots coalesce, or a central spot may be surrounded by smaller ones. Weather fleck is often confused with other flecks caused by chemicals, diseases, or nutritional disorders.
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

More Images:

Image Number: 1402062

Light Box(?)

For Batch Downloading, Requesting Commercial Use,
Creating Presentations, and Creating Image Collections

Creative Commons License    This work is licensed under a
Creative Commons Attribution 3.0 License.

Image Use:(?) You must attribute the work in the manner specified (but not in any way that suggests endorsement).

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

Node Affiliation: Bugwood - UGA

Available Images Resolutions:

(Download only - Use Light Box for Requests)

Image uploaded on Sunday, March 10, 2002
Image Information last updated on Monday, May 09, 2011