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Air Pollution and the Chlorotic Dwarf Disease of Eastern White Pine

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Chlorotic dwarf is a serious disorder of eastern white pine (Pinus strobus L.) in young plantations. Diseased trees are stunted, with mottled foliage, and have only the current-year needles. In a series of experiments in which chambers were erected around living trees to regulate airflow and filter out pollutants, it was found that dispersoid pollutants, through their harmful effect on foliage of genetically susceptible white pines, are responsible for chlorotic dwarf. Ambient levels of ozone and sulfur dioxide, singly and in combination, promoted early symptoms of premature defoliation and needle mottling on susceptible ramets in fumigation chambers. Forest Sci. 16:46-55.
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Keywords: Pinus strobus; ozone; sulfur dioxide

Document Type: Journal Article

Affiliations: Principal Plant Pathologists, Forest Insect and Disease Laboratory, Northeastern Forest Exp. Sta., Forest Serv., U. S. D. A., Delaware, Ohio

Publication date: 1970-03-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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