Download or read book Growth Responses in Individual Eastern White Pine Pinus Strobus L Trees Following Partial Cutting Treatments microform written by Eddie Bevilacqua and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth Responses in Individual Eastern White Pine Pinus Strobus L Trees Following Partial Cutting Treatments written by Eddie Bevilacqua and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: White pine ('Pinus strobus' L.) growth following a partial cutting treatment was analyzed to assess the growth response of individual trees from three different crown classes to varying levels of local neighbourhood competitive interference. Trees from all crown classes, with an average age of 69 years, showed increased rates of diameter, basal area and volume growth following release. Only intermediate trees responded with increased height growth. Specific volume increment (SVI) proved superior to relative growth rate for assessing competition effects on size-dependent volume growth by virtue of its greater sensitivity to and better correlation with indices of competition. Significant differences in SVI among crown classes in both released and control treatments 23 years after release were observed. Released trees had increased levels of SVI for the first 15 years following treatment. The hypothesis of size symmetry in resource competition was rejected by virtue of the stronger relationship between SVI and competition indices that weighted competitors by relative size. However, two-sided competition could not be rejected in view of the significant influence of smaller trees on SVI of larger trees. No difference between intra- and inter-specific competition on white pine growth was detected. Plasticity in growth form was evident. Intermediate trees exhibited significantly different crown and stem form among crown classes in the control treatment, and different crown form relative to the release treatment. Crown size, which was positively correlated with volume increment, improved as a result of competition release and was inversely correlated with levels of local neighbourhood competition. Vertical distribution of bole area increment in all crown classes was altered in the release treatment. Bole area increment in released trees increased progressively from tree apex to base of the stem for the first 15 years after partial cutting, eventually resulting in significant changes in stem form. Control trees showed relatively constant area increment below the crown with no significant change in stem form. A cumulative volume growth model based on initial tree size, age, and local neighbourhood competition was developed for use in white pine stands managed under a partial cutting regime, such as the uniform shelterwood system.
Download or read book Growth Responses in Individual Eastern White Pine Pinus Strobus L Trees Following Partial Cutting Treatments written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rooting White Pine Cuttings written by Albert Granville Snow and published by . This book was released on 1940 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diameter Increment in Mature Eastern White Pine Pinus Strobus L Following Partial Harvest of Old growth Stands in Ontario Canada written by and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study addresses the gap in knowledge about the responses of large, old trees to release from competition. Investigators took increment cores from mature eastern white pines in 144 sample plots in 12 partially harvested and six unharvested control stands in the Algoma region of Ontario to determine how these trees responded to a structural retention harvest that had occurred nine years previously. The results demonstrate the ability of old trees to respond markedly to reduced competition. The implications of the results for timber production, stand regeneration, wind firmness, and maintenance of wildlife habitat are discussed.
Download or read book A Study of the Natural Reproduction of Eastern White Pine Pinus Strobus Linn written by James Elwood Davis and published by . This book was released on 1926 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptation of Eastern White Pine Provenances to Planting Sites written by Maurice E. Demeritt and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eastern white pine provenances from the extreme limits of its natural range are changing from above- and below-average stability to average stability for height growth with increasing age. The regression method is useful for evaluating the stability of provenance to planting sites. The same general conclusions are reached for the performance of provenances at different planting sites from the regression method as from the relative difference method.
Download or read book The Effects of Frequent Low Thinnings on the Growth of a White Pine Pinus Strobus L Plantation in Southern Michigan written by Edward Lancelot Hughes and published by . This book was released on 1953 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Growth Rates of Western White Pine Varieties Resistant to Blister Rust written by Raymond J. Hoff and published by . This book was released on 1980 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Planting Site Shade Local Seed Source written by Raymond E. Graber and published by . This book was released on 1968 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2The purpose of our study was to examine some of the factors that influence seedling emergence and seedling survival of direct-seeded white pine (Pinus strobus L.). Our major concern was the response of white pine to a particular set of growing conditions on the seedling emergence pattern, on seedling survival, and on the causes of seedling mortality. S3.
Download or read book Performance in the Southern Appalachians of Eastern White Pine Seedlings from Different Provenances written by Earl R. Sluder and published by . This book was released on 1971 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines pruning White Pine in the Lake States for Blister Rust Control written by H. Daniel Brown and published by . This book was released on 1972 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood Density Development in Young Open pollinated Eastern White Pine Pinus Strobus L Families written by and published by . This book was released on 2007 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Seedbed Conditions on the Regeneration of Eastern White Pine written by David Martyn Smith and published by . This book was released on 1951 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nature of White Pine Pinus Strobus L Growth Response to Thinning written by Andrew R. Gillespie and published by . This book was released on 1985 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstract Bulletin of the Institute of Paper Chemistry written by and published by . This book was released on 1979 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two year Growth of Eastern White Pine Pinus Strobus L as Affected by Nitrogen Application Rate Soil and Stand Category written by Robert K. Shepard and published by . This book was released on 1989 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
