Effects of ozone, sulfur dioxide and nitrogen oxides on the growth of eastern white pine. [Pinus strobus L]

Journal Article · Mon Dec 31 23:00:00 EST 1979 · Phytopathology; (United States)

OSTI ID:5651239

Yang, Y S

Eight clones of eastern white pine (Pinus strobus L.) with predetermined sensitivity to air pollution were fumigated with 5 pphm and 10 pphm ozone (O/sub 3/), sulfur dioxide (SO/sub 2/), and nitrogen oxides (NO/sub x) singly, and in combination for 4h/day for 35 consecutive days. During the fumigation period, needle length, visible symptoms, and dry wt. were evaluated weekly. The carbon dioxide (CO/sub 2/) exchange rate was measured during the 10 pphm O/sub 3/ and 10 pphm SO/sub 2/ fumigation for 4h/day for 7 consecutive days. Needle length was not significantly different among different clones and treatments, whereas, there was a correlation between needle dry wt. (mg/mm of fascicle) and air pollution injury. Ten pphm O/sub 3/ and 10 pphm SO/sub 2/ slightly decreased CO/sub 2/ exchange rate during the first 1h of fumigation. Recovery phenomenon occurred after the end of each day's 4h fumigation. There was a trend of continuous decrease in relative CO/sub 2/ exchange rates over the 7 day period, however.

• Research Organization: Virginia Tech., Blacksburg, VA
• OSTI ID: 5651239
• Journal Information: Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 70:7; ISSN PHYTA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL RECOVERY
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CONIFERS
DOSE-RESPONSE RELATIONSHIPS
GROWTH
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
OZONE
PINES
PLANT GROWTH
PLANTS
POLLUTION
RECOVERY
RESPIRATION
SENSITIVITY
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SYNERGISM
TOXICITY
TREES