Download or read book Spiral Grain Development in Plantation Grown White Spruce Picea Glauca Moench Voss written by Douglas R. Turner and published by . This book was released on 2011 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of Spiral Grain in White Spruce written by Emily Franz and published by . This book was released on 2015 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Spiral grain is a wood grain feature found sporadically in trees and has significant effect in sawn lumber and somewhat unknown effects in pulping. It does make up a portion of the harvested trees from a forest and therefore information relating to its fiber properties will be useful, particularly for pulping as its presence, if severe enough, typically renders the wood unusable for lumber. Spiral grain measurements and cores were made on 63 year old plantation white spruce (Picea glauca (Moench) Voss) grown in Northwestern Ontario. Occurrence of spiral grain was established for two different tree spacing treatments. The highest occurrence of spiral grain occurred in the widest spacing of 3.6 m x 3.6 m. Furthermore it was discovered that spiral grain seems to limit the diameter growth in trees."-- from abstract.
Download or read book Specific Gravity Variation in Plantation Grown White Spruce Picea Glauca Moench Voss written by Charles I-Jen Chang and published by . This book was released on 1966 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Specific Gravity and Growth Rate of Row Thinned White Spruce Picea Glauca Moench Voss Plantations written by Robert K. Shepard and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2007 D5 IUFRO All Division 5 Conference written by International Union of Forestry Research Organizations. Division 5. Conference and published by . This book was released on 2007 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of Roots and Root Systems in White Spruce Picea Glauca Moench Voss Seedlings and the Influence of Cultural Treatments on Root Morphology Anatomy and the Capacity to Conduct Water written by Marek J. Krasowski and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Root development in Picea glauca seedlings was studied anatomically during the first year after germination. The cyclic pattern of elongation of individual roots was established about three months after germination. With progressing development, root hairs gradually diminished and colonization of roots by mycorrhizal fungi increased. The development of primary tissues in long roots, relative to the distance from the root tip, appeared to be related to their rate of root elongation. In these roots, the development of Casparian bands in the endodermis often occurred several millimeters away from the root tip. In elongating short roots, endodermal cells attained their primary state only 2-4 cells away from the proximal part of the apical meristem. In non-elongating roots, the secondary-state endodermis was connected to the metacutis just above the apical meristem. The development of Casparian bands was always prior to the maturation of the first xylem elements. The endodermis did not develop past the secondary state. Through the presence of passage cells, it remained functional until its disruption by secondary growth. Low frequency of plasmodesmata in the endodermis indicated that the plasma membrane - cell wall - plasma membrane type of transport was the main means of molecule exchange between the cortex and the stele in white spruce roots. Undifferentiated tissues of the root near the apical meristem were almost impermeable to fluorescent dye tracers Sulforhodamine G and fluorescein diacetate. The metacutis and the endodermis at the primary and secondary state were impermeable to the apoplastic tracer Sulforhodamine G. Roots and root systems were structurally and physiologically affected by cultural treatments such as pruning and fertilizer application. Roots of seedlings grown at low nitrogen (N) supply were thin and their tracheids were narrow. Excess N did not significantly increase root diameter and tracheid dimensions, compared to the optimum supply. Dimensions of bordered pits were not significantly affected by the N level. The secondary development in roots advanced basipetally but exceptions were found indicating that cambial growth of roots could vary along the root regardless of the position relative to the root tip. Seedlings with different root systems modified by nursery culture exhibited different pattems of root growth after planting. Root elongation and root surface area increases immediately after planting were greater in container-grown than in mechanically box-pruned seedlings but this was unrelated to the longer-term performance of these seedlings. The initially low hydraulic conductance of root systems in box-pruned seedlings increased significantly 6-8 weeks after planting while it remained unchanged or declined in container-grown seedlings. Root pressure, comparable to that reported for angiosperm seedlings, was found in white spruce seedlings during the first few weeks after planting. This is contrary to the general notion that conifers do not develop notable root pressure. The initiation and elongation of roots in unfertilized organic compartments was poor compared to root growth in unfertilized mineral compartments, especially in mechanically pruned seedlings whose roots proliferated in the latter compartments. The growth of roots in the organic substrates was enhanced by the addition of slow-release fertilizer to that substrate. The growth response of roots to slow-release fertilizer added to the mineral substrate was restricted to that compartment but root growth in both soil compartments was affected by the addition of slow-release fertilizer to the organic substrate. Root development in different types of planting stock was differently affected by the soil substrate type and the addition of the slow release fertilizer.
Download or read book Provenance Variation Genetic Variance and Age to age Correlation in White Spruce Picea Glauca Moench Voss and Their Implications for Advanced Generation Breeding written by Jianyuan Wang and published by . This book was released on 2000 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Specific Gravity and Growth of Row Thinned White Spruce picea Glaucca Moench Voss Plantations written by Robert K. Shepard and published by . This book was released on 1980 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Germination and Early Growth of White Spruce Picea Glauca Moench Voss from Ten Central and Western Canadian Sources written by Corrinne L. Nelson and published by . This book was released on 1984 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Localized Heating and Cooling Effects on Wood Development in Stems of White Spruce Picea Glauca Moench Voss written by Colin R. Barnfield and published by . This book was released on 1970 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of White Spruce Picea Glauca Moench Voss in Elevated Carbon Dioxide Environments written by Kenneth O. Higginbotham and published by . This book was released on 1983 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of increased carbon dioxide concentrations on the growth of white spruce seedlings were examined.
Download or read book The Influence of Initial Espacement on the Growth of a 32 year old White Spruce Plantation written by John C. (John Campbell) Pollack and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of Growth Response in White Spruce Picea Glauca moench Voss Seedlings Following Vision Herbicide Application written by Jason Cameron Stafford and published by . This book was released on 1995 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood and Fiber Science written by and published by . This book was released on 1983 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Forest Engineering written by and published by . This book was released on 1989 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Germination and Fertilization Regime Effects on the Growth of Container White Spruce Seedlings at Red Rock Research Station written by British Columbia. Ministry of Forests and published by . This book was released on 1989 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transformation of White Spruce Picea Glauca Moench Voss Using Microprojectile Bombardment written by Yinghong Li and published by . This book was released on 1995 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
