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Stimulation of Flowering in Eastern White Pine

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Abstract:

Fertilization of Pinus strobus L. with ammonium sulfate at the rate of 0, 18, 53, and 158 pounds of N per acre, root pruning, and strangling and girdling of branches were tested for inducing and stimulating flowering. Neither fertilizer nor mechanical injury induced flowering in 3- to 14-year-old trees. All treatments except strangling stimulated production of ovulate strobili in 22-year-old trees, but none increased the number of flowering trees. Girdling stimulated production of strobili on individually treated branches. Treatment in July 1959, stimulated production of ovulate strobili in 1960, whereas treatment in April 1960, did not. Treatment in the summer of the year prior to flowering increased the yield of strobili when production would have otherwise been low; no increase was apparent when production was generally high. Stimulation did not persist into a second season.

Document Type: Journal Article

Affiliations: Staff of the Connecticut Agric. Exp. Sta. New Haven, Conn.

Publication date: 1964-03-01

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.

    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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