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Some Recent Developments In The Wind River Douglas Fir Plantation Spacing Tests
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Book Synopsis Some Recent Developments in the Wind River Douglas-fir Plantation Spacing Tests by : Donald L. Reukema
Download or read book Some Recent Developments in the Wind River Douglas-fir Plantation Spacing Tests written by Donald L. Reukema and published by . This book was released on 1959 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fifty-year Development of Douglas-fir Stands Planted at Various Spacings by : Donald L. Reukema
Download or read book Fifty-year Development of Douglas-fir Stands Planted at Various Spacings written by Donald L. Reukema and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigating Dominance in Douglas-fir Stands by : Kenneth William Krueger
Download or read book Investigating Dominance in Douglas-fir Stands written by Kenneth William Krueger and published by . This book was released on 1967 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tree Growth and Soil Relations at the 1925 Wind River Spacing Test in Coast Douglas-fir by : Richard E. Miller
Download or read book Tree Growth and Soil Relations at the 1925 Wind River Spacing Test in Coast Douglas-fir written by Richard E. Miller and published by . This book was released on 2004 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1925 Wind River spacing test is the earliest field trial seeking to determine the most appropriate spacing for planting Douglas-fir. Spacing treatments were not replicated, although individual spacings were subsampled by two to four tree-measurement plots. Previously, greater growth occurred at the wider spacings (10 and 12 ft) than at the closer spacings (4, 5, 6, and 8 ft). We considered three possible explanations: (1) close spacing eventually retarded growth, (2) soil quality may be better in the 10- and 12-ft spacings than at closer spacings, and (3) tree spacing and soil quality combined affected growth. To test these explanations, we (1) measured and mapped several site factors (topographic relief, depth to bedrock, and soil properties) and (2) related these factors to tree and stand growth. We infer from the strong correlation between spacing and soil variables that the influence of soil and spacing cannot be separated; differences in soil depth and available water capacity confound spacing effects and vice versa. Because soils in the wider spacings are generally deeper and have more available water capacity than do soils in the closer spacings, we conclude that some of the superior tree growth attained in the 10-and 12-ft spacings is due to more favorable soil conditions. Visual comparisons of tree size, however, suggest that spacing is probably the stronger factor affecting tree growth at this location.
Book Synopsis Three Growth and Soil Relations at the 1925 Wind River Spacing Test in Coast Douglas-Fir by : United States Department of Agriculture
Download or read book Three Growth and Soil Relations at the 1925 Wind River Spacing Test in Coast Douglas-Fir written by United States Department of Agriculture and published by CreateSpace. This book was released on 2015-06-26 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1925 Wind River spacing test is the earliest field trial seeking to determine the most appropriate spacing for planting Douglas-fir. Spacing treatments were not replicated, although individual spacings were subsampled by two to four tree-measurement plots. Previously, greater growth occurred at the wider spacings (10 and 12 ft) than at the closer spacings (4, 5, 6, and 8 ft). We considered three possible explanations: (1) close spacing eventually retarded growth, (2) soil quality may be better in the 10- and 12-ft spacings than at closer spacings, and (3) tree spacing and soil quality combined affected growth. To test these explanations, we (1) measured and mapped several site factors (topographic relief, depth to bedrock, and soil properties) and (2) related these factors to tree and stand growth. We infer from the strong correlation between spacing and soil variables that the influence of soil and spacing cannot be separated; differences in soil depth and available water capacity confound spacing effects and vice versa. Because soils in the wider spacings are generally deeper and have more available water capacity than do soils in the closer spacings, we conclude that some of the superior tree growth attained in the 10- and 12-ft spacings is due to more favorable soil conditions. Visual comparisons of tree size, however, suggest that spacing is probably the stronger factor affecting tree growth at this location.
Author :Pacific Northwest Forest and Range Experiment Station (Portland, Or.) Publisher : ISBN 13 : Total Pages :368 pages Book Rating :4.3/5 (91 download)
Book Synopsis Report by : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Download or read book Report written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.) and published by . This book was released on 1952 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Notes written by and published by . This book was released on 1959 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Pacific Northwest Forest and Range Experiment Station (Portland, Or.) Publisher : ISBN 13 : Total Pages :374 pages Book Rating :4.1/5 (69 download)
Book Synopsis USDA Forest Service Research Paper PNW. by : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Download or read book USDA Forest Service Research Paper PNW. written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.) and published by . This book was released on 1969 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USDA Forest Service Research Paper PNW. by :
Download or read book USDA Forest Service Research Paper PNW. written by and published by . This book was released on 1970 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper PNW. written by and published by . This book was released on 1978 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Planting Practice in the Central States by : Gustaf Adolph Limstrom
Download or read book Forest Planting Practice in the Central States written by Gustaf Adolph Limstrom and published by . This book was released on 1962 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tree Growth and Soil Relations at the 1925 Wind River Spacing Test in Coast Douglas-fir by : Richard E. Miller
Download or read book Tree Growth and Soil Relations at the 1925 Wind River Spacing Test in Coast Douglas-fir written by Richard E. Miller and published by . This book was released on 2004 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physical and chemical properties of some Blue Mountain soils in the northeastern Oregon by : J. Michael Geist
Download or read book Physical and chemical properties of some Blue Mountain soils in the northeastern Oregon written by J. Michael Geist and published by . This book was released on 1978 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Forest Service Research Paper PNW. by :
Download or read book U.S. Forest Service Research Paper PNW. written by and published by . This book was released on 1967 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Review of Forestry Research by : John A. Romberger
Download or read book International Review of Forestry Research written by John A. Romberger and published by Elsevier. This book was released on 2013-10-22 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Review of Forestry Research, Volume 2 is a collection of reviews and summaries of world literature concerning trees, forests, and forestry. This volume is divided into six chapters, and begins with a brief presentation of the historical developments of forest science and forestry research in East Asia. The succeeding chapters evaluate the influence of spacing on the growth and development of different coniferous tree species, as well as the influence of silvicultural practices on wood quality. These topics are followed by discussions on the various aspects of forest meteorology and the optimal conditions for vigorous root growth. The final chapter looks into the successions of organisms in discoloration and decay processes in living trees. This book will prove useful to forest scientists, research workers, teachers, advanced students, administrators, economists, and forest and land managers.
Book Synopsis An Economic Analysis of Accelerated Road Construction on the Bureau of Land Management's Tillamook Resource Area by : Con H. Schallau
Download or read book An Economic Analysis of Accelerated Road Construction on the Bureau of Land Management's Tillamook Resource Area written by Con H. Schallau and published by . This book was released on 1969 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production Rates in Commercial Thinning of Young-growth Douglas- Fir by : Thomas Cooper Adams
Download or read book Production Rates in Commercial Thinning of Young-growth Douglas- Fir written by Thomas Cooper Adams and published by . This book was released on 1967 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: