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Showing 1 to 20 of 28 for “"eastern white pine"”.
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Genetic variation in eastern white pine from the Southern Appalachian Mountains
Thesis (M.S.)--Michigan State University. Dept. of Forestry,
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Assessing Eastern White Pine Lumber Production and Use in the Eastern United States
… survey of primary and secondary manufacturers of eastern white pine (EWP) was executed within three regions of the Eastern US: New England, Mid-Atlantic, and Lake States. Two hundred ninety-six usable questionnaires were returned in total, with 185 coming from primary manufacturers and 111 from …
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Root growth potential and bud dormancy of three northern pines with emphasis on eastern white pine
… in one-year-old (1-0) and two-year-old (2-0) eastern white pine (Pinus strobus L.), red pine (Pinus resinosa Ait.), and Scotch pine (Pinus sylvestris L.) seedlings with emphasis on eastern white pine. During 1985-86 all three species of 2-0 stock displayed a similar pattern of RGP with high …
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The response of 12 clones of eastern white pine (Pinus strobus L.) to ozone and nitrogen dioxide
… using 2-0 rootstock and scion from 12 ortets of eastern white pine (Pinus strobus L.) growing at the Radford Army Ammunition Plant (RAAP). The 12 ortets represented 4 symptom severity classes (3 ortets/class) ranging from trees with > 25% of their crowns exhibiting necrotic tipburn (Class I) to …
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Foliar damage and shoot growth changes resulting from exposure of eastern white pine seedlings to nightly acidic mists
Eastern white pine is an important coniferous forest species of the northeastern United States where nightly acidic mists may be a factor in the decline of highland forests. During 3 studies, experimental mists were applied nightly in order to simulate nocturnal misty conditions common in the …
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Comparative study of an antioxidant defense mechanism in genotypes of eastern white pine which show differential foliar characteristics
Approximately 10-15% of field-grown eastern white pine (Pinus strobus L.) within a nursery plantation expressed foliar characteristics similar to that induced by oxidant pollution. Sensitive genotypes (based on foliar characteristics), had a 50% reduction in needle growth, severe needle tip burn, …
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The etiology of the decline of eastern white pine (Pinus strobus L.) on Virginia landscapes: a survey of stress factors
A decline of eastern white pine, Pinus strobus L., has been observed for over 80 years in the eastern United States. The syndrome has not always been discussed as a decline but reported under a variety of names. Symptoms vary with time required for trees to die, but generally include chlorotic …
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Variation in the physiological processes of eastern white pine (Pinus strobus L.) differing in sensitivity to ozone, sulfur dioxide, and nitrogen dioxide
Ten clones of eastern white pine (Pinus strobus L.) representing three different pollutant sensitivity classes (i.e. sensitive, intermediate, and tolerant) were exposed to ozone, sulfur dioxide, and nitrogen dioxide singly, and in. combinations at various concentrations. Visible symptom expression, …
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The association and transmission of Leptographium procerum (Kendr.) wing., by root feeding insects in Christmas tree plantations
… serious problem facing Christmas tree growers of eastern white pine, (Pinus strobus L.). Limited studies have shown an association between PRD affected trees and insect infestations, and L. procerum has been recovered from field collected insects. The objectives of this study were to demonstrate …
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Parallel-to-Grain Withdrawal Resistance of Structural Self-Tapping Screws in Canadian Timber
… Fir, 280 mm in wet Douglas Fir and 320 mm in dry Eastern White Pine. Second, withdrawal tests were conducted on screws with a diameter of 12mm and a constant embedment depth of 280 mm with varying timber density and moisture content. Increases in moisture decreased the withdrawal resistance. The …
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Sustainability of New Hampshire's sawmill industry and its forest resource base
… key is to track the consumption and inventory of eastern white pine (Pinus strobus L.), the most dominant commercial species in New Hampshire. This research profiled the sawmill industry in New Hampshire and Vermont in terms of production, consumption, labor characteristics and regulating economic …
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Isolation and Characterization of Bioactive Metabolites from Endophytic Fungi of Pinus Strobus
Fungal foliar endophytes of Pinus strobus (Eastern white pine) were collected from different sites across south-eastern New Brunswick, Canada for screening of bioactive metabolite compounds. Metabolite isolation and characterization of three bioactive strains yielded the dibenzofuran derivative …
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Soil Carbon Dioxide Efflux in a Naturally Regenerated and a Planted Clear-Cut on the Virginia Piedmont
… of naturally regenerated and planted loblolly pine (Pinus taeda), shortleaf pine (Pinus echinata), and eastern white pine (Pinus strobus) in a 50-acre clear-cut on the Virginia Piedmont. Rates of CO2 efflux were measured every 2 weeks immediately adjacent and away (1m) from newly planted …
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Soil based vegetation productivity modeling for a northern Michigan surface mining region
… Irish potatoes, red maple (Acer rubrum L.), white spruce (Picea glauca [Moench] Voss), red pine (Pinus resinosa Aniton), eastern white pine (Pinus strobus L.), jack pine (Pinus banksiana Lamb.), and lilac (Syringa vulgaris L.). Soil attributes that were examined in this research include: …
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Appalachian Surface Mine Reforestation Techniques: Effects of Grading, Cultural Treatments and Species Selection
… Of the three species groups planted, including Eastern white pine (Pinus strobus), mixed native hardwoods had the best survival and hybrid poplar (Populus deltoides x Populus trichocarpa) produced the most biomass. Hybrid American chestnuts survived and grew better when planted as bare-root …
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Crop tree release impacts both the understory and overstory in mixed oak stands of the southern Appalachian Mountains
… species (Smilax spp.), red maple (Acer rubrum), eastern white pine (Pinus strobus), and blueberry species (Vaccinium spp.). We found that at two, three, five, and seven years post-release there was a significantly more understory stems surrounding released trees compared to non-released trees. …
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GENETIC STRUCTURE OF PINUS STROBUS L BASED ON FOLIAR ISOZYMES FROM 27 PROVENANCES
<p>Genetic structure of eastern white pine (Pinus strobus L.) was studied with foliar isozymes from 27 provenances by starch gel electrophoresis. Twenty-one loci, five fixed, coding for 12 enzyme systems, including three invariants, were used for this study. Indirect evidence for genetic control of …
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Influence of site factors and vascular conductivity on the development of procerum root disease
… root disease (PRD) is a serious problem in eastern white pine (Pinus strobus L.) Christmas tree plantations in VIrginia. Procerum root disease is caused by Leptographium procerum (Kendr.) Wingf which is believed to be transmitted by the pales weevil Hylobius pales (Herbst). Symptoms of …
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Procerum root disease physiology and disease interactions with ozone
Procerum root disease of eastern white pine (Pinus strobus L.), caused by Leptographium procerum (Kendr.) Wingf., has been epidemic in Virginia Christmas tree plantations since 1990. Symptoms of chlorosis, wilt, and decreased apical growth resemble those of water stress. Resin infiltration of the …
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Multi-scale Remote Assessment of Phenology of Photosynthesis and Productivity of Northern Forests
… and photosynthetic pigment composition in eastern white pine, red maple and white oak to understand the photosynthetic mechanisms reflected by NDVI, PRI and CCI at the leaf-scale. In deciduous trees, NDVI adequately reflected seasonal variation of photosynthetic activity and pigments. In …
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