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Influence of smoke from the combustion of polyvinyl chloride insulation on northern hardwood forest species

Journal Article · · Phytopathology; (United States)
OSTI ID:5262434
Open burning is often used as a method of removing insulation from wire in salvage operations. Forest communities in the vicinity of an open burning site in northern Pennsylvania where polyvinyl chloride (PVC) insulation was being burned from copper wire were examined. Chlorotic flecks of the upper leaf surface, red-brown to black necrotic spots on the leaves, defoliation, and death were observed on black cherry, red maple, sugar maple, striped maple, serviceberry, and aspen. Tan, necrotic flecks and cupping and distortion of leaves were observed on American beech, red maple, sugar maple, striped maple, and serviceberry. Necrotic banding and chlorotic and necrotic flecks were observed on eastern hemlock. Black cherry was the most susceptible tree species, and damage was most severe northeast of the burnsite. There was a positive correlation between foliar chloride levels and degree of defoliation of black cherry and a negative correlation between diameter growth rate and percentage defoliation of black cherry. Hydrochloric acid (HCl) and other compounds are released during the combustion of PVC insulation. Since HCl is known to be phytotoxic, it is likely that it is responsible for the damage. However, the typical marginal leaf symptoms associated with HCl damage were not observed.
Research Organization:
Pennsylvania State Univ., University Park
OSTI ID:
5262434
Journal Information:
Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 58; ISSN PHYTA
Country of Publication:
United States
Language:
English