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Maturation of Shumard and White Oak Acorns

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During a 3-year observation of growth and maturation of acorns from four Shumard and four white oaks, dry weights of both increased steadily from July until early November. Chemical analyses of acorns from one tree of each species showed that carbohydrates, the principal storage food, accumulated rapidly during late August as moisture content decreased. Physiological maturity as indicated by normal germination was reached in late October or early November, when carbohydrates averaged 25 percent in Shumard acorns and 40 percent in white oak. The most practical indicator of acorn maturity is the change in color from green to brown. Forest Sci. 22:149-154.

Keywords: Quercus alba; Quercus shumardii; seed maturation

Document Type: Journal Article

Affiliations: Principal Silviculturist, Forest Tree Seed Laboratory--USDA Forest Service, Southern Forest Experiment Station--Starkville, Mississippi, maintained in cooperation with Mississippi State University

Publication date: June 1, 1976

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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