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Influence of high concentration of peroxyacetylnitrate on woody plants

Journal Article · · Phytopathology; (United States)
OSTI ID:6426477
Trees were exposed to 20 to 30 pphm peroxyacetylnitrate for 8 hr in a growth chamber at 24 C, 70% relative humidity, and 3400 ft-c. Acer saccharinum, F. americana, G. triacanthos, Q. alba, Q. palustris, and Q. rubra demonstrated a pattern of sensitivity related to the age of the tissue; they showed either an early increase in sensitivity with a peak at 3 to 5 weeks followed by a decrease in sensitivity, or a high initial sensitivity at 2-3 weeks and a decrease with an increase in age. Symptoms ranged from a brown necrosis of the undersurface or a purpling of the upper leaf surface to an interveinal necrosis or necrotic fleck. In a time-dosage study, F. americana showed several different symptoms depending on the length of exposure: an oily upper surface, a wrinkling of the leaf margin, an interveinal necrosis, and severe leaf curling and abscision. Damage usually was restricted to the younger leaves.
Research Organization:
Pennsylvania State Univ., University Park
OSTI ID:
6426477
Journal Information:
Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 61:2; ISSN PHYTA
Country of Publication:
United States
Language:
English