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Acute and chronic sulfur dioxide fumigation of pinon pine seeds and seedlings: An overview

Conference ·
OSTI ID:42880
Pinon pine germinating seeds, emergent seedlings, and one-year-old seedlings were fumigated with sulfur dioxide under both acute and chronic exposure conditions. These fumigations were conducted in order to determine the potential for damage to pinon pine in southwestern national parks and monuments where exposure to elevated concentrations of sulfur dioxide from power plants and smelters may occur. Injury was apparent only under acute fumigation conditions for one-year-old seedlings at sulfur dioxide concentrations of greater than 3 ppm. Chronic fumigations of 16 week duration were conducted only at ambient parameters. Growth rate data for both experimental and control seedlings were fit to a linear growth model with a correlation of r{sup 2} = 0.95. The results of this study agree with other data in the literature and indicate that damage from elevated sulfur dioxide concentrations in southwestern national parks and monuments is much more likely for other, more sensitive species than pinion pine.
OSTI ID:
42880
Report Number(s):
CONF-9410273--
Country of Publication:
United States
Language:
English

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