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Showing 1 to 20 of 96 for “"red oak"”.
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Ozone effects on red oak root dynamics
… an ozone fumigation experiment on northern red oak seedlings and mature trees was conducted. It was hypothesized that carbon reallocation to replace foliage damaged by ozone would decrease fine-root production and turnover. The red oak trees and seedlings were fumigated for three years with …
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Seed dormancy and germination of northern red oak
Northern red oak (Quercus rubra l.), a valuable timber in species in the eastern United States, has a delayed growth in the early years of establishment. Freshly harvested northern red oak seed exhibit dormancy that may be broken by stratification or pericarp removal. In this research, germination, …
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Fungi associated with northern red oak (Quercus rubra ) acorns
Poor regeneration of northern red oak is widespread in the central hardwood region. A two-part study was conducted to determine what fungi are associated with and cause cotyledon discoloration of northern red oak acorns. The field study determined that simulated small mammal notching, surface …
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Moisture Gradient Measurement During Kiln Drying of Red Oak
The key to improving drying quality and reducing drying time and energy consumption lies in understanding and controlling moisture movement during drying. As wood dries, strains and stresses develop as a result of restraints imposed by moisture gradients and differential shrinkage in wood. So …
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Optimization of edging and trimming operations for red oak lumber
… upgrading of edging and trimming operations for red oak lumber through computer-aided optimization. The main objective was to evaluate how lumber value recovered by actual hardwood operations compare with the maximum value obtainable through the optimization of edging and trimming. An …
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Chemical interactions between rainfall and northern red oak (Quercus rubra l.) foliage
… simulated acid rain solutions and northern red oak (Ouercus rubra L.) leaves of trees growing in fertile, limestone-derived soil and less fertile, sandstone/shale-derived soil. Leaves harvested from trees growing on the fertile site had greater concentrations of total N, P, K, Ca, and Mn but …
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Mass transfer, creep and stress development during the drying of red oak
… of mass transfer and restraint of shrinkage in red oak. Particular emphasis was placed on the rheological or creep components of strain. Mass transfer was measured during the first four days of drying under increasingly severe conditions. The resulting moisture gradient profiles were parabolic …
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Check reduction in red oak (Quercus spp.) lumber using diffusion resistant coatings
Approximately five percent of the volume of red oak lumber which is harvested for use in the furniture and flooring industries in the United States is unusable due to surface checking. This thesis investigated the possibility of reducing surface checking by controlling the lumber boundary …
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Impact of Ellipticality on Lumber Grade and Volume Recovery For Red Oak Logs
… on green lumber grade and volume recovery for red oak logs under current sawing methods. Logs of low and high ellipticality were selected and processed at four Appalachian area sawmills. Processing variables and lumber output were tracked for all logs. It was determined that there was no …
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Relationship of bacterial infection and stress wave travel time in red oak lumber
… bacterial infection increases the proclivity of red oak lumber to develop surface, internal and end checks, and develop or aggravate ring failure during drying. It also extends the drying time. Bacterial infection is hard to identify before drying without the use of costly, time- consuming tests. …
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Growth and dieback of underplanted northern red oak seedlings under various light and moisture conditions
… (TNC) relations of underplanted northern red oak (Quercus rubra L.) seedlings were investigated. Greenhouse-grown red oak seedlings were subjected to 0, 63, or 92% shade and soil water potential was permitted to reach -0.3 or -2.0 MPa before rewatering. In a field study, underplanted …
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A Business Model for a Red Oak Small Diameter Timber Processing Facility in Southwest Virginia
The conversion of red oak small diameter timber (SDT) into solid wood products was investigated. The objectives of this research were to 1) determine the yield of lumber, pallet and container parts, and residues from SDT and the market potential for these products; 2) determine the economic …
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Performance of northern red oak (Quercus rubra) underplantings under five management regimes and across existing environmental gradients
Oaks (Quercus sp.) are dominant throughout much of the eastern broadleaf forests of the United States and are of great ecological, economical, and cultural value. Despite their prevalence in the overstory, many sites are lacking in the advanced reproduction necessary for its regeneration in future …
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Analysis of Red Oak Timber Defects and Associated Internal Defect Area for the Generation of Simulated Logs
… Research Station in Princeton, West Virginia for red oak (Quercus rubra, L.) logs. These data were analyzed to determine distributions for log and external defect attributes, and the information was used in the program to assure realistic log generation. An attempt was made to relate the external …
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Evaluation of a direct processing system for converting no. 3 grade red oak logs into rough dimension parts
… processing system for converting No.3 grade red oak logs into rough dimension parts. In the first part of this study, the cutting yields of green dimension parts and dollar value recovery from No.3 grade red oak logs by the direct processing system were estimated. A combination method of …
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The margin for yield improvement for no. 1 common 5/4 red oak in a conventional rough mill
… rough mill. Improvement was measured in terms of volume and also value of cuttings produced. Current levels of yield were obtained from an in-plant yield study of 138 boards. The same material was then processed with a computer optimization program designed to simulate a …
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Assessing the impact of greentree reservoir water management on red oak growth and anatomy in the lower Mississippi Alluvial Valley
… artificial flooding during the fall and winter. Red oak species within GTRs provide vital resources, such as mast and habitat for wildlife, and make up an important part of waterfowl conservation. However, many GTRs are facing a decline in the regeneration of desirable red oak species and an …
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Sensitivity of northern red oak (Quercus rubra L.) to variation of temperature and moisture availability along latitudinal and longitudinal climate gradients
… and measure spatial associations between oak sensitivity to climate and regional climate patterns to test the hypothesis that climate controls the spatial distributions of species range limits.Seasonal climate variables exhibited the strongest correlations with radial growth most …
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Sequence stratigraphic study of the Lower Atokan Spiro sandstone and reservoir characterization of the Red Oak field, Arkoma Basin, southeastern Oklahoma, A
Includes bibliographical references (pages 269-276).
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