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Determining Fiber Length, Fibrillar Angle And Springwood-Summerwood Ratio in Slash Pine

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The important wood property, fiber length, can be determined rather precisely. For botanical and genetical studies only the unbroken fibers from a particular type of cell should be measured. For studies of wood pulp it is equally important to measure all fibers present, either whole or broken. A good correlation exists between fibrillar angles as determined by the x-ray and those determined by microscopic methods for Pinus elliotii Engelm. from northern Florida. Only a slight negative correlation was found between the average fiber length and the fibrillar angle. The amount of summerwood varied considerably among the different growth rings from the same tree. The width of the summerwood portion of a single growth ring varied also along its circumference and vertically along the tree axis. There is an inverse relationship between the widths of the summerwood portions of two adjacent growth rings. Until the pattern of these different variations is further clarified the proportion of summerwood can be best determined from pulp samples.

Document Type: Journal Article

Affiliations: Research Chemist with the Buckeye Cellulose Corp., Memphis, Tenn.

Publication date: June 1, 1963

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  • 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.
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