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Growth of White Spruce in the Nursery

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Glass-fronted boxes inserted in paths adjacent to nursery seedbeds were used to study root development of seedling white spruce, Picea glauca (Moench) Voss, during the third growing season. Total oven-dry weight increased about fourfold, tending to be linear through the season, but almost 20 percent occurred after September. The top-root ratio more than doubled, increasing very rapidly during the early part in the season to a maximum of 3.9:1, then decreasing. Visible root and top growth began almost concurrently with a flush of root activity in the spring at the time of a bud swelling; and a secondary flush in early fall. The rate of root elongation, as measured on individual roots against the glass surface, had a spring maximum, a severe depression during shoot growth, a more moderate level through the summer, and a slow decrease in the fall.

Document Type: Journal Article

Affiliations: Research Forester, Ontario Dept. Lands and Forests, Maple, Ont., Canada

Publication date: March 1, 1963

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.

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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