The Effect Of Microsite Compaction On The Establishment Of Direct Seeded Jack Pine And Black Spruce
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The Effect Of Microsite Compaction On The Establishment Of Direct Seeded Jack Pine And Black Spruce
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Author : Stephen Robert Warrington
language : en
Publisher:
Release Date : 1987
The Effect Of Microsite Compaction On The Establishment Of Direct Seeded Jack Pine And Black Spruce written by Stephen Robert Warrington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Black spruce categories.
The Effect Of Microsite Compaction On Direct Seeding Success Of Jack Pine And Black Spruce In Northwestern Ontario
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Author : Laird Van Damme
language : en
Publisher:
Release Date : 1988
The Effect Of Microsite Compaction On Direct Seeding Success Of Jack Pine And Black Spruce In Northwestern Ontario written by Laird Van Damme and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Black spruce categories.
The Forestry Chronicle
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Author :
language : en
Publisher:
Release Date : 1991
The Forestry Chronicle written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Forests and forestry categories.
Forestry Newsletter
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Author :
language : en
Publisher:
Release Date : 1988
Forestry Newsletter written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Forests and forestry categories.
Response Of Containerized Black Spruce And Jack Pine Seedlings To Fertilization Rate And Growing Medium
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Author : Stephen John Colombo
language : en
Publisher: Maple : Ontario Tree Improvement and Forest Biomass Institute
Release Date : 1988
Response Of Containerized Black Spruce And Jack Pine Seedlings To Fertilization Rate And Growing Medium written by Stephen John Colombo and has been published by Maple : Ontario Tree Improvement and Forest Biomass Institute this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Nature categories.
Despite the presence of handbooks for the production of containerized tree seedlings, the determination of appropriate rates of fertilization remains an inexact science, since the rate and timing of fertilization can be affected by factors such as local variation in water chemistry, growing media, and the environment in each greenhouse. This report presents the results of semi-operational trial of fertilizer rates and growing media to assess for black spruce and jack pine container seedlings; the range of fertilizer concentrations and seedling nutrient contents resulting in best seedling growth; and the effect of fertilization on bud development and fall freezing damage. Black spruce and jack pine seedlings were grown at the Swastika Tree Nursery according to operational greenhouse practices, at 0, 1/3, 1, 3 or 9X the operational fertilization rates for each species in three growing media.
The Effects Of Soil Compaction On The Germination And Growth Of Picea Mariana And Pinus Banksiana
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Author : Kristy Vannieuwenhuizen
language : en
Publisher:
Release Date : 2020
The Effects Of Soil Compaction On The Germination And Growth Of Picea Mariana And Pinus Banksiana written by Kristy Vannieuwenhuizen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Soil compaction has long been an issue for the forestry industry. Soil compaction can reduce soil aeration, porosity and drainage, and restrict the growth and success of trees and other plants. The objective of this study is to determine how the degree of soil compaction affects the seed germination and seedling growth of jack pine (Pinus banksiana) and black spruce (Picea mariana). The study was carried out in a greenhouse at the Lakehead University Thunder Bay campus. Silty clay loam soil was used for the study and the treatment consisted of four levels of compaction with the bulk densities of 0.9 g/cm3 (C), 1.1 g/cm3 (C1), 1.2 g/cm3 (C2), and 1.3 g/cm3 (C3). The soil compaction was implemented in buckets of 36 cm in height and 30.2 cm in diameter. Each treatment level was replicated five times. Seed germination was tallied daily. Seedling height and root collar diameter were measured after 18 weeks of seedling growth. Then the seedlings were harvested. The foliage and root systems were scanned and analyzed using the Regen WinSeedle and WinRhizo systems, respectively, and the following parameters were subject to statistical analysis: root length and diameter, total root length, and projected and surface areas of roots, average needle length, average needle width, total leaf area and the number of needles per seedling. The biomass of roots, total biomass, as well as root to shoot ratios, were determined after the samples were dried in a drying oven at 80 C for 48h. It was found that root biomass, total biomass, root to shoot ratios, main root lengths, seedling height, total root length, average root diameter, root surface area, and the number of root tips were significantly affected by soil compaction and were generally significantly different between the two species, except for the root to shoot ratios. While root diameters increased under increased compaction, every other growth parameter faced general downward trends in growth. Under the most severely compacted soil (C3), total root lengths and number of root tips decreased by 64.6% and 76.2%, respectively in Picea mariana. Large reductions in the main root lengths and the number of root tips were found for P. banksiana under the most severely compacted soil as well, with reductions of 46.4% and 46.7%, respectively. The reductions by soil compaction of all the measured growth parameters were greater in P. mariana than in P. banksiana. Overall, this study illustrates that while the growth of both species was negatively affected by all levels of soil compaction, P. banksiana was less sensitive than P. mariana, suggesting that jack pine may have a competitive advantage over black spruce on sites with soil compaction. Therefore, all efforts should be made to avoid or minimize soil compaction in forestry operations to maintain the forest productivity of the site.
Seed Ecophysiology Of Temperate And Boreal Zone Forest Trees
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Author : RobertE. Farmer
language : en
Publisher: Routledge
Release Date : 2017-11-01
Seed Ecophysiology Of Temperate And Boreal Zone Forest Trees written by RobertE. Farmer and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-01 with Science categories.
This is the first truly modern book solely devoted to seed reproduction of forest trees-from flowering to establishment, with emphasis on the interaction of environment with physiological processes. Focus is on seed function in natural settings and the application of information to natural regeneration of forests. This easy-to-read text addresses important principles and provides in-depth coverage of existing literature. Presentation of the information is organized to allow for a natural development of the main theme with full explanations of such important components as seed production, dispersal and germination, as well as the integral parts played by water, temperature, light, chemicals, animals, pathogens and aging. A highly useful book for investigators, practitioners or students.
A Comparative Autecological Study Of Black Spruce Jack Pine Lodgepole Pine And Hybrid Pine For Direct Seeding In Northern Ontario
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Author : David Arthur Winston
language : en
Publisher:
Release Date : 1973
A Comparative Autecological Study Of Black Spruce Jack Pine Lodgepole Pine And Hybrid Pine For Direct Seeding In Northern Ontario written by David Arthur Winston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Austrian pine categories.
Canadian Journal Of Forest Research
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Author :
language : en
Publisher:
Release Date : 2014-10
Canadian Journal Of Forest Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10 with Forests and forestry categories.
Silviculture
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Author :
language : en
Publisher:
Release Date : 1989
Silviculture written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Forest management categories.