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Thermoperiods And Soil Temperatures As They Affect Growth And Dormancy Of Douglas Fir Seedlings Of Different Geographic Origin
Download Thermoperiods And Soil Temperatures As They Affect Growth And Dormancy Of Douglas Fir Seedlings Of Different Geographic Origin full books in PDF, epub, and Kindle. Read online Thermoperiods And Soil Temperatures As They Affect Growth And Dormancy Of Douglas Fir Seedlings Of Different Geographic Origin ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Thermoperiods and soil temperatures as they affect growth and dormancy of douglas-fir seedlings of different geographic origin by : Denis P. Lavender
Download or read book Thermoperiods and soil temperatures as they affect growth and dormancy of douglas-fir seedlings of different geographic origin written by Denis P. Lavender and published by . This book was released on 1972 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetics of Douglas-fir by : Roy R. Silen
Download or read book Genetics of Douglas-fir written by Roy R. Silen and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Forest Service Research Paper WO by :
Download or read book U.S. Forest Service Research Paper WO written by and published by . This book was released on 1976 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Service Research Paper WO. by :
Download or read book Forest Service Research Paper WO. written by and published by . This book was released on 1977 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) Publisher : ISBN 13 : Total Pages :564 pages Book Rating :4.:/5 (89 download)
Book Synopsis USDA Forest Service Research Paper PSW. by : Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Download or read book USDA Forest Service Research Paper PSW. written by Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) and published by . This book was released on 1978 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper PSW. written by and published by . This book was released on 1968 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plant Breeding Reviews, Volume 27 by : Jules Janick
Download or read book Plant Breeding Reviews, Volume 27 written by Jules Janick and published by John Wiley & Sons. This book was released on 2010-04-07 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Breeding Reviews presents state-of-the-art reviews on plant genetics and the breeding of all types of crops by both traditional means and molecular methods. Many of the crops widely grown today stem from a very narrow genetic base; understanding and preserving crop genetic resources is vital to the security of food systems worldwide. The emphasis of the series is on methodology, a fundamental understanding of crop genetics, and applications to major crops. It is a serial title that appears in the form of one or two volumes per year.
Download or read book FRDA Report written by and published by . This book was released on 1989 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plant Growth Regulating Chemicals by : Louis G. Nickell
Download or read book Plant Growth Regulating Chemicals written by Louis G. Nickell and published by CRC Press. This book was released on 2018-01-18 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this two-volume work is to make available both to the investigator and user, on a crop by crop basis, the latest information on the use of chemicals to regulate plant growth and development. Emphasis is given to the major crops and to those which the most success has been achieved.
Book Synopsis Seed Dissemination in Small Clearcuttings in North-central California by : Philip M. McDonald
Download or read book Seed Dissemination in Small Clearcuttings in North-central California written by Philip M. McDonald and published by . This book was released on 1980 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a 1964-1967 study on the Challenge Experimental Forest, seedfall was evaluated in 2-, 5-, and 10-acre circular clearcuttings. During the 4 years, 10 seed crops, ranging from light to bumper, were produced by ponderosa pine. white fir, Douglas-fir, and incense cedar. Seedfall ranged from 76 to 40,691 sound seed per acre (188 to 100,547/ha) for a single species in a given year. From 89 to 100 percent of each species' seed fell within an area 1 1/2 times the height of the average dominant tree. Overall, seed distribution was highly variable.
Book Synopsis Forest Nursery Manual: Production of Bareroot Seedlings by : Mary L. Duryea
Download or read book Forest Nursery Manual: Production of Bareroot Seedlings written by Mary L. Duryea and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: ing damage ranged from odor. to general visual appearance. Attributes of seedling quality are categorized as either to cutting buds. to scraping bark to detect dead cambium. performance attributes (RGP. frost hardiness. stress resistance) One nursery reported using frost hardiness as an indicator of or material attributes (bud dormancy. water relations. nutrition. when to begin fall lifting. but none reported using it as an morphology). Performance attributes are assessed by placing indicator of seedling quality before shipping stock to customers. samples of seedlings into specified controlled environments and evaluating their responses. Although some effective short 23.4.3 Stress resistance cut procedures are being developed. performance tests tend Only three nurseries measure stress resistance. They use to be time consuming; however, they produce results on whole the services of Oregon State University and the test methods plant responses which are often closely correlated with field described in 23.2.3. One nursery reported that results of stress performance. Material attributes. on the other hand. reflect tests did not agree well with results of RGP tests and that RGP only individual aspects of seedling makeup and are often correlated better with seedling survival in the field. Most stress poorly correlated with performance. tests are conducted for reforestation personnel rather than for Bud dormancy status seems to be correlated. at least nurseries.
Book Synopsis Woody Plant Communities by : T.T. Kozlowski
Download or read book Woody Plant Communities written by T.T. Kozlowski and published by Elsevier. This book was released on 2012-12-02 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Deficits and Plant Growth, Volume VI: Woody Plant Communities focuses on the water relations of woody plants in a community context. Organized into eight chapters, this book begins with a quantitative overview of sources of water available to woody plants. Separate chapters follow that discuss the water relations of coniferous, temperate hardwood, and tropical and subtropical forests and woodlands; apple and citrus orchards; closely related woody plants; and tea plantations. For each of these plant communities, emphasis is placed on hydrological cycles; water use and transpiration; absorption of water; and effects of environmental factors on soil and plant water balance. The effects of water deficits on physiological processes; vegetative and reproductive growth; yield of harvested products; drought resistance; and cultural practices affecting plant water balance and yield are also emphasized in this book. This volume will be useful to both researchers and those involved in the practice of growing woody plants for wood and fruit crops and for esthetic values.
Book Synopsis Improving Plantation Establishment by Optimizing Growth Capacity and Planting Time of Western Yellow Pines by : James L. Jenkinson
Download or read book Improving Plantation Establishment by Optimizing Growth Capacity and Planting Time of Western Yellow Pines written by James L. Jenkinson and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seedlings of 27 sources of western yellow pines, selected in climates typical of the species, were raised in a nursery in the western Sierra Nevada. Seedling top and root growth capacities were periodically assessed during fall and winter, and field survivals of outplanted seedlings were evaluated in different climates with summer drought. In the nursery, four distinct, innate seasonal patterns of root growth capacity were defined in ponderosa pine from within and outside California, and two distinct patterns were defined in Jeffrey pine. Below snow line in the western Sierra Nevada, seedling survivals were higher in spring plantings than in a winter one, and for California sources than for others. In spring plantings above snow line, survivals for diverse local sources of ponderosa and Jeffrey pines were uniformly high, both on the western slope and east of the Sierra Nevada crest. The results demonstrate that seedlings of any source will have adequate growth capacity and will survive the first year on any well prepared site if they are lifted at the right time, stored properly, and planted in phase with warming soil trends.
Book Synopsis Reforestation in the Cascades Pacific Silver Fir Zone by : Nancy M. Halverson
Download or read book Reforestation in the Cascades Pacific Silver Fir Zone written by Nancy M. Halverson and published by . This book was released on 1982 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature Effects on the Growth of Douglas-fir Seedlings by : Donald Everett Wommack
Download or read book Temperature Effects on the Growth of Douglas-fir Seedlings written by Donald Everett Wommack and published by . This book was released on 1964 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was undertaken to determine the effects of different chilling treatments during the dormant season upon growth of Douglas-fir seedlings0 In addition it was planned to determine whether seedlings native to various geographic areas differ in their chilling requirements0 The hypotheses were advanced, based on previous studies, that chilling at near L & 00F. was more effective in satisfying the chilling requirement of plants than chilling at temperatures near 32°F., or 50°F., and that plants native to areas of low elevation, characterized by mild winters, require less chilling than plants native to areas of high elevation characterized by long and severe winters. Verification or rejection of these hypotheses was undertaken by subjecting dormant seedlings of Douglas-fir, native to several geographic areas, to chilling under different temperature treatments for different lengths of time. Experiment I was designed to compare the effects of chilling for three, six, and twelve weeks at various temperatures (32, L & 0, 50, and 60°F., and out-of-doors) on two-year-old seedlings from eight geographic areas. After chilling, they were moved to a warm greenhouse and exposed to short days (nine hours). The effectiveness of the treatments in breaking dormancy was expressed in number of days from end of treatment to bud burst, percentage of plants which broke dormancy, and amount of shoot elongation. In general 40°F. was the most effective treatment followed by 32°F., out-of-doors, 50, and 60°F., in that order. The latter temperature had little or no effect in breaking dormancy compared with the other treatments. Twelve weeks of chilling were more effective than chilling for shorter periods at all temperatures except 60°F. At six weeks 40°F. was the most effective treatment, 32°F. was less effective, while 50, 60°F., and out-of- doors treatments were ineffective in breaking dormancy. Four weeks of chilling were ineffective regardless of the chilling treatment. Genetic differences were observed among the plants from the eight areas chilled at 40°F. for twelve weeks. Plants native to the highest areas represented in the experiment resumed growth earlier than those from the lower elevations. Experiments II and III differed from Experiment I since the dormant seedlings had germinated and grown only about three months prior to chilling. In these experiments plants were chilled for four, eight, and twelve weeks. After the chilling period half of the plants were grown under long days (normal days plus two hours of artificial light) while the other half were maintained on short days (nine hours). The results of Experiment II were similar to those of Experiment I with respect to the greater effectiveness of 40°F. compared with the other temperature8. Long days seemed to compensate for lack of adequate chilling except in plants chilled for twelve weeks at 40°F., indicating that the chilling requirements of these plants had been more adequately satisfied than by any of the other treatments. Experiment III was designed to compare the effectiveness of chilling under fluctuating day and night temperatures with that of chilling at a constant temperature. Fluctuating day and night temperatures of 40/32°F. (40°F. day, 32'F. night) were about as effective as continuous chilling at 32°F. or 40°F. Fluctuating temperatures of 50/32°F., and 50/40°F. appeared to be about as effective as continuous chilling at 50°F. Chilling at 50°F. during the day, irrespective of the temperature during night, delayed bud burst in comparison with chilling at 32, 40, or 40/32°F. Genetic differences were observed among the plants from the different areas in Experiments II and 1110 Plants native to high elevations (6000' elev.) resumed growth in lower percentages, resumed growth later, and grew less than plants from tower elevations (3000' and 3600' elev.). The principal contribution of this study has been the demonstration of differences in effectiveness of several chilling treatments in breaking the dormancy of seedlings. Variations in the chilling requirements of seedlings native to different areas has also been shown.
Book Synopsis Conifer Seedling Mineral Nutrition by : R. van den Driessche
Download or read book Conifer Seedling Mineral Nutrition written by R. van den Driessche and published by CRC Press. This book was released on 1990-12-13 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conifer Seedling Mineral Nutrition provides a comprehensive review of conifer seedling mineral nutrition and its significance to forestry. The book covers relationships between mineral supply and uptake; the effects of nutrition on seedling growth; an integration of the ideas of T. Ingestad with classical growth analysis concepts; practical aspects of assessing nutrient status and details of fertilizing bare root and container nursery stock; and fertilizing vegetative propagules. The book also describes and illustrates Mycorrhizas, assessing their importance to plantation establishment in an analysis of recent papers reporting field trials. The effects of nutrients on stress resistance and establishment when applied in the nursery and while planting are discussed in the final chapter. It will prove useful to reforestation research workers, nurserymen, and silviculturalists and should be considered essential reading for forestry students.
Book Synopsis Xeric Effects on the Distribution of Conifer Species in a Southern Sierra Nevada Ecotone by : Edwin Bosonetto Royce
Download or read book Xeric Effects on the Distribution of Conifer Species in a Southern Sierra Nevada Ecotone written by Edwin Bosonetto Royce and published by . This book was released on 1997 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
