Temperature and the Diurnal Rhythm of Height Growth in Pines

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Abstract:

Digger and knobcone pines grew more during daytime than at night. Growth of both species was closely related to number of degree-hours above 38°F accumulated during the growth period. This relationship applied to day versus night growth, growth for consecutive 24-hour periods, and growth during the course of a single day. The evidence suggests that diurnal rhythms of pine shoot growth are temperature-induced, rather than being under the control of the light-dark cycle.

Document Type: Journal Article

Affiliations: Staff of the Pacific Southwest Forest and Range Expt. Sta., Forest Service, U. S. Dept. Agric., Berkeley, Calif.

Publication date: July 1, 1964

More about this publication?
  • 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.
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