Results 161 to 170 of about 7,113 (215)
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Resin acids of Pinus resinosa needles
Phytochemistry, 1985Abstract The principal resin acids in the needles of Pinus resinosa are the labdane diterpenes, the new 8,13-epoxy-14-labden-19-oic acid (epimanoyl oxide acid), 8,13β-epoxy-14-labden-19-oic acid (manoyl oxide acid), 8(17), E -12,14-labdatrien-19-oic acid (communic acid) and 15-oxo-8(17)-labden-19-oic acid (imbricataloic acid).
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THE HEARTWOOD EXTRACTIVES OF PINUS RESINOSA AIT•
Canadian Journal of Chemistry, 1964The acetone extract of red pine heartwood was found to contain mainly pinosylvin monomethyl ether, oleic, linoleic, dehydroabietic, and isopimaric acids, and triglycerides of unsaturated fatty acids. Smaller amounts of pinosylvin, β-sitosteryl esters, and benzoic acid were isolated.
A. Sato, E. Von Rudloff
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Mycorrhizal-phosphorus interaction on red pines (Pinus resinosa Ait.)
Agriculture, Ecosystems & Environment, 1990Abstract One isolate each of Pisolithus arhizus and hebeloma arenosa, both isolated from sporophores collected in Wisconsin conifer nurseries, were tested for effects on growth and nutrient content of red pines (Pinus resinosa Ait.) at varied levels of available phosphorus.
J.S. MacFall +3 more
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Biomass of Pinus Resinosa in Relation To Potassium Nutrition
Forest Science, 1970Abstract Nineteen plots ranging in tree age from 29 to 32 years and comprising part of an extensive fertilizer trial on a potassium-deficient site were examined. The most recent potassium additions were made at least 12 years earlier, and a period of stable growth response reached.
H. A. I. Madgwick +3 more
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Seasonal Weather Regimes Influence Interpretation of Pinus resinosa Foliar Analysis
Soil Science Society of America Journal, 1979Abstract A technique is described for quantifying the influence of seasonal precipitation and atmospheric temperature patterns (using degree‐day summations) on annual foliar analysis data. The results of this are used to adjust for the influence of climatic variation on foliar data so as to obtain a better ...
Donald H. Bickelhaupt +3 more
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Variable Photosynthetic Responses of Pinus resinosa Seedlings to Herbicides
Nature, 1966HERBICIDES have shown variable toxicity to young gymnosperms; the susceptibility of these plants greatly varies according to the chemicals and dosage used, the species, and the age of the plants1–4. Among the more obvious deleterious responses of young Pinus plants to certain herbicides are twisting and curling of cotyledons, distortion of old needles,
S. SASAKI, T. T. KOZLOWSKI
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Lightning-induced mineral/chemical changes in red pine (Pinus resinosa)
Palaeogeography, Palaeoclimatology, Palaeoecology, 2011Abstract Red pine (Pinus resinosa) growing in sandy soil of Glacial Lake Whittlesey age (~ 13–12 ka) in the town of Waterford, Ontario, Canada, north of Lake Erie, was struck by lightning in a fierce thunderstorm, May, 2010. The lightning strike was strong enough to destroy television sets and telephones in nearby houses and two red pines were struck,
W.C. Mahaney, M.W. Milner
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Responses ofPinus resinosain Newfoundland to wildfire
Journal of Vegetation Science, 1994. Natural Pinus resinosa (red pine) stands in Newfoundland are restricted to 22 small, dry, nutrient-poor sites. A short wildfire cycle (15 - 30 yr) of both surface and crown fire regulates stand perimeters and is the main factor in regulating stand development. At the nucleus of current stands 200 yr occur, usually showing multiple fire scars.
B.A. Roberts, A.U. Mallik
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SSRN Electronic Journal, 2022
Uncertainty and emerging threats associated with climate change necessitate the development of new approaches for managing forest ecosystems. To address this need the Adaptive Silviculture for Climate Change (ASCC) Network was established to examine the efficacy of three climate adaptation strategies in important forest types across North America: 1 ...
Wiechmann, Lewis J. +2 more
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Uncertainty and emerging threats associated with climate change necessitate the development of new approaches for managing forest ecosystems. To address this need the Adaptive Silviculture for Climate Change (ASCC) Network was established to examine the efficacy of three climate adaptation strategies in important forest types across North America: 1 ...
Wiechmann, Lewis J. +2 more
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Mycoflora of Pinus banksiana and Pinus resinosa needles. II. Epiphytic fungi
Canadian Journal of Botany, 1989The epiphytic mycoflora isolated from healthy needles of Pinus banksiana and Pinus resinosa was investigated. Approximately 75% of the fungi were present on less than 5% of the needles. The number of different fungi per needle increased with needle age on both species, but more fungi were found on P. resinosa needles.
D. Legault, M. Dessureault, G. Laflamme
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