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For many wood species, the grading of timbers [>76 mm (>4-in.) thick] has not changed in decades. Most timbers are still visually graded by methods that originated in the 1930s. Mechanical grading procedures used to accurately grade 38-mm (2-in. nominal) dimension lumber have not been adapted…
Author(s): David E. Kretschmann, David W. Green
Keywords: Quercus, Grading, Mechanical methods, Structural timbers, Modulus of elasticity, Strength testing
Source: Journal of materials in civil engineering. Vol. 11, no. 2 (May 1999).:p. 91-97 : ill.
Year: 1999
We compared indices of total hard mast production (oak and hickory combined) in 20, second-growth, pine-hardwood stands under five treatments to determine the effects of different reproduction treatments on mast production in the Ouachita Mountains. We evaluated mast production in mature…
Author(s): Roger W. Perry, Ronald E. Thill
Keywords: Acorns, Arkansas, Carya, clearcut, group selection, hickories, Oklahoma, Quercus, single-tree selection, shelterwood, silviculture
Source: South. J. Appl. For. 27(4):253-258
Year: 2003
Expressions of germination rate, such as peak value (PV) or mean germination time (MGT), provide good estimates of acorn quality, but test completion requires a minimum of 3 weeks. For more rapid estimates, tetrazolium staining is recommended. Some seed test results were significantly correlated…
Author(s): F.T. Bonner
Keywords: acorns, germination, nursery performance, Quercus
Source: Res. Note SO-306. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 6 p.
Year: 1984
Silvicultural systems integrate both regeneration and intermediate operations in an orderly process for managing forest stands. The clearcutting method of regeneration favors the development of species that are moderately intolerant to intolerant of shade. In fact, clearcutting is the most proven…
Author(s): James S. Meadows, John A. Stanturf
Keywords: Even-aged regeneration, Uneven-aged regeneration, Partial cuttings, Patch cutting, Quercus
Source: Forest Ecology and Management. 90(2,3): 127-140
Year: 1997
The literature on tree mortality following outbreaks of European gypsy moth was reviewed. The trends in defoliation and mortality and the influence of defoliation on mortality of individual trees and forest stands have been summarized via a regional perspective. The literature showed that: certain…
Author(s): Christopher B. Davidson, Kurt W. Gottschalk, James E. Johnson
Keywords: defoliation, tree mortality, oaks, eastern hardwoods, Quercus
Source: Gen. Tech. Rep. NE-278. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 15 p.
Year: 2001
A 16 ha watershed in the Coweeta Basin was clearcut in 1939 and 1962. Vegetation was inventoried in 1934 and at about 7-year intervals to 1991. After the first clearcut, tree diversity remained high until after the second cut. Diversity based on density and basal area decreased significantly 14…
Author(s): Katherine J. Elliott, Wayne T. Swank
Keywords: Disturbance, Tree diversity, Forest dynamics, Clearcutting, Southern Appalachians, Quercus, Liriodendron tulipifera
Source: Vegetitio 115: 11-18, 1994
Year: 1994
This report documents a technical assistance trip to four community-owned forests and associated sawmill and secondary processing operations in the vicinities of Durango and Oaxaca, Mexico. The products and processes of these enterprises are described, and recommendations for improvement are…
Author(s): Roland Hernandez, Michael C. Wiemann
Keywords: Ejido, bosque comunal, sawmill, Durango, Oaxaca, Mexico, Pinus, Quercus
Source: General Technical Report FPL-GTR-167. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 14 pages
Year: 2006
An ecological classification system has been developed for the Pacific Southwest Region of the Forest Service. As part of that classification effort, blue oak (Quercus douglasii) woodlands and forests of southern San Luis Obispo and northern Santa Barbara Counties in Los Padres National Forest were…
Author(s): Mark I. Borchert, Nancy D. Cunha, Patricia C. Krosse, Marcee L. Lawrence
Keywords: Quercus, Quercus douglusii, vegetation classification, California oaks, blue oak
Source: USDA Forest Service General Technical Report PSW-139, 49 p.
Year: 1993
With about half the amount of water, subirrigated Metrosideros polymorpha Gaud. (Myrtaceae) grown 9 mo in a greenhouse were similar to those irrigated with an existing fixed overhead irrigation system; moss growth was about 3X greater in the fixed overhead system after 3 mo. Moss growth was…
Author(s): R. Kasten Dumroese, Jeremy R. Pinto, Douglass F. Jacobs, Anthony S. Davis, Baron Horiuchi
Keywords: irrigation, fertilization, Metrosideros polymorpha, Quercus, Picea, Acacia, Echinacea, electrical conductivity, Myrtaceae
Source: Native Plants Journal, Vol. 7(3):253–261
Year: 2006
Among natural resource professionals, California oaks continue to attract considerable attention. This report provides a comprehensive bibliography of the extensive but scattered oak literature. The 768 references are organized into two systems: (a) a topical outline, in which references are…
Author(s): James R. Griffin, Philip M. McDonald, Pamela C. Muick
Keywords: oaks, bibliography, indexes, Quercus, California
Source: Gen. Tech. Rep. PSW-96. Berkeley, Calif.: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. 38 p
Year: 1987