Vegetation injury from the interaction of nitrogen dioxide and sulfur dioxide
Six plant species were exposed for 4 hr to nitrogen dioxide and/or sulfur dioxide in greenhouse exposure chambers. Although concentrations of nitrogen dioxide below 200 ppHM and concentrations of sulfur dioxide below 50 ppHM caused no leaf injury, injury did develop when plants were exposed to mixtures of 5 to 15 ppHM of each of the two gases. Leaf injury from either nitrogen dioxide or sulfur dioxide alone occurred as marginal and/or interveinal necrosis on each leaf surface (bifacial). Injury produced by a mixture of the two gases appeared as chlorotic and necrotic flecking on the upper surface of the interveinal areas of tomato, radish, oats and tobacco. Reddish-brown lesions (stipple) developed on pinto bean and soybean leaves. Lower leaf-surface injury frequently occurred in the mixed-gas fumigations, with little or no upper surface injury. The concentrations of nitrogen dioxide plus sulfur dioxide which caused plant injury were similar to those found in urban areas, and may result in yield losses for plants grown under field conditions.
- OSTI ID:
- 6535360
- Journal Information:
- Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 61; ISSN PHYTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CEREALS
CHALCOGENIDES
ECOLOGICAL CONCENTRATION
FOOD
GLYCINE HISPIDA
GRAMINEAE
GRASS
GROWTH
LEAVES
LEGUMINOSAE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OATS
OXIDES
OXYGEN COMPOUNDS
PHASEOLUS
PLANT GROWTH
PLANTS
RADISHES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOBACCO
TOMATOES
TOXICITY
VEGETABLES