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Notes: Germination and Early Seedling Growth of Four Conifers on Acidic and Alkaline Substrates

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Direct effects of buffered solutions (pH 2.2, 3.0, and 9.0) on seed germination and early seedling growth were studied in the laboratory. Germination of lodgepole pine at the low pHs was higher than that at the reference (distilled water, pH 6.5). Germination of white spruce and jack pine at low pHs was equal to germination at the reference, while that of black spruce was significantly lower. Extreme alkaline conditions (pH 9.0) reduced germination in all species below that for the reference pH. Seedling growth of all species was ignificantly less at high and low pHs than in distilled water. Lodgepole pine grew best of all species at pH 9.0; jack pine showed the most growth at pH 3.0. Such tests have relevance for species selection for revegetation of mine spoils, tailings, and other sites with extreme pH. Forest Sci. 25:358-360.

Keywords: Picea glauca; Picea mariana; Pinus banksiana; Pinus contorta; black spruce; jack pine; lodgepole pine; mine wastes; pH; revegetation; white spruce

Document Type: Miscellaneous

Affiliations: Professor, Department of Plant Ecology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0

Publication date: June 1, 1979

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.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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