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Northern fox grape

Vitis labrusca

Ozone injury usually appears as black or purple spots (stipple), yellow or white bleached spots (chlorotic mottle, needle tip burn), or leaf browning (necrosis). Ozone may also cause premature leaf drop (senescence).


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Healthy Northern fox grape Leaves
Courtesy, all-creatures.org
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Ozone Injury to Northern fox grape Leaf
Courtesy, all-creatures.org
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Ozone Injury to Northern fox grape Leaf
Courtesy, Dr. Donald D. Davis
Pennsylvania State University

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Northern fox grape with Ozone Injury
Courtesy, Dr. Donald D. Davis
Pennsylvania State University
photograph
Ozone Injury to Northern fox grape
Courtesy, Dr. Donald D. Davis
Pennsylvania State University
updated on 09/17/2006  I   http://nature.nps.gov/air/Pubs/bioindicators/northernFoxgrape.cfm   I  Email: Webmaster