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The Effect of Length of Day on the Height Growth of Certain Forest Tree Seedlings

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Although considerable experimental work has been done on the effect of length of day on the growth, flowering, and fruiting of agricultural and horticultural plants, comparatively little work has been done on the effect of length of day on forest trees. The results reported here of work done at Duke University have important technical implications. For instance, they show that slash pine, shortleaf pine, jack pine, and beech can be thrown out of their normal growing rhythm by long days; but the normal period of growth of other species such as chestnut oak and southern red oak is not readily changed.
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Document Type: Journal Article

Affiliations: Department of Botany, Duke University, Durham, N. C.

Publication date: 1939-10-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

    2016 Impact Factor: 1.675 (Rank 20/64 in forestry)

    Average time from submission to first decision: 39.6 days*
    June 1, 2016 to Feb. 28, 2017

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