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Book Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas fir and Pacific Silver Fir

Download or read book Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas fir and Pacific Silver Fir written by P. H. Cochran and published by . This book was released on 1986 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas Fir and Pacific Silver Fir Classic Reprint

Download or read book Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas Fir and Pacific Silver Fir Classic Reprint written by P. H. Cochran and published by Forgotten Books. This book was released on 2018-03-18 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas-Fir and Pacific Silver Fir The Forest Service of the us. Department of Agriculture is dedicated to the principle of multiple use management of the Nation's forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the National Forests and National Grasslands, it strives as directed by Congress to provide increasingly greater service to a growing Nation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Book Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas Fir and Pacific Silver Fir

Download or read book Effect of Operational Fertilization on Foliar Nutrient Content and Growth of Young Douglas Fir and Pacific Silver Fir written by Cochran W. Lopushinsky and published by Ecosystems Research Alliance. This book was released on 1997 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Fertilization on the Growth and Foliar Nutrition of Immature Douglas fir in the Interior Cedar hemlock Zone of British Columbia

Download or read book Effects of Fertilization on the Growth and Foliar Nutrition of Immature Douglas fir in the Interior Cedar hemlock Zone of British Columbia written by Robert Peter Brockley and published by University of British Columbia Press. This book was released on 2006 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effects of fertilization with nitrogen (N) alone, and in combination with sulphur (S), on the growth and foliar nutrition of six immature, managed Douglas-fir (Pseudotsuga menziesii var. glauca [Beissn.] Franco) stands in the Interior Cedar-Hemlock (ICH) biogeoclimatic zone of British Columbia are reported 6 years after treatment. Results indicate that interior Douglas-fir stands growing on circummesic sites within the ICH zone are generally responsive to fertilization. Disregarding results from one installation that was damaged by Armillaria root disease, average net volume response following fertilization with N alone was 13.5 m3/ha (range: 6.5-24 m3/ha) compared to the control treatment. Six-year volume gains from N+S additions averaged 16 m3/ha (range: 10-23 m3/ha). In relative terms, stand volume responses to fertilization with N and N+S averaged 24% (range: 8-41%) and 28% (range: 16-39%), respectively. Growth projections generated by the tipsy growth and yield program indicate that the accelerated stand development following a single fertilizer application will likely reduce biological rotations (i.e., culmination of mean annual increment) and technical rotations (e.g., minimum harvestable age) by 2-3 years. Relative growth responses compare favourably with results from Douglas-fir fertilization studies in other jurisdictions.‍?‍?Pre- and post-fertilization foliar nutrient analyses indicate that several of the sites were marginally S deficient, and that S status deteriorated 1 year following N fertilization. Added S was readily taken up, thereby maintaining a favourable N:S balance in trees fertilized with N+S. Despite improvements in foliar S status, the incremental growth benefits of added S may be too small on most sites to justify the extra expense involved in blending and applying N+S fertilizers in large-scale aerial operations.‍?‍?Results from this study, and others, indicate that pre-fertilization levels of foliar N and sulphate S (SO4) may have utility in selecting candidate stands and in making appropriate fertilizer prescriptions. For example, the largest growth responses following fertilization may be expected in stands with pre-fertilization foliar N levels less than 11.5 g/kg ( 13 g/kg when using dry combustion analytical methods). Also, low foliar N combined with small amounts of pre-fertilization foliar SO4 (

Book Large Stock and Fertilizer Improve Growth of Douglas fir Planted on Unstable Granitic Soil in Northern California

Download or read book Large Stock and Fertilizer Improve Growth of Douglas fir Planted on Unstable Granitic Soil in Northern California written by R. O. Strothmann and published by . This book was released on 1980 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use of large stock and fertilizer resulted in significant increases in seedling height growth, but not in better survival.

Book Foliar Mineral Content of Forest and Nursery grown Douglas fir Seedlings

Download or read book Foliar Mineral Content of Forest and Nursery grown Douglas fir Seedlings written by Kenneth William Krueger and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Response of Douglas Fir Seedlings to Nitrogen Sulfur and Phosphorus Fertilizers Classic Reprint

Download or read book Response of Douglas Fir Seedlings to Nitrogen Sulfur and Phosphorus Fertilizers Classic Reprint written by M. A. Radwan and published by Forgotten Books. This book was released on 2018-01-21 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Response of Douglas-Fir Seedlings to Nitrogen, Sulfur, and Phosphorus Fertilizers This study, therefore, was designed to study effects of N, S, and P additions on growth and nutrient content of Douglas - fir seedlings grown in two forest soils in a lathhouse. We are aware of the limitations of pot tests in providing prescriptions that can be directly applied to field situations. However, the very limited information about Douglas - fir nutrition now available and the high cost of establishing field tests strongly justify preliminary experimentation with seedlings. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Book Fall Fertilization Effects on Douglas fir Seedling Quality

Download or read book Fall Fertilization Effects on Douglas fir Seedling Quality written by Todd M. Birchler and published by . This book was released on 1997 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal Douglas-fir (Psuedotsuga menziesii (Mirb.) Franco) 1 + 1 seedlings were fertilized with two types of fertilizers (NB4NO3+K2SO4 and (NH. 4)2 SO4+KC1) at four rates (0, 80, 160, 320 kg N and K/ha) split over 3 application dates (September 19, October 13, November 1, 1996). By January 10, total Kjeldahl nitrogen (TKN) concentrations increased 16, 30, and 34% and contents increased 6, 20, and 26% for the 80, 160, and 320 kg N/ha treatments relative to the unfertilized seedlings. Potassium levels remained relatively unchanged as a result of the fertilization treatments. Chloride concentrations increased 57, 77, and 112% and contents increased 45, 71, and 92% for the 80, 160, 320 kg K/ha as KC1 relative to the unfertilized seedlings. There was an immediate pulse in nitrate levels following the first application of NH4NO3+K2 SO4, but this was of short duration. Levels of most other nutrients continued to increase between September 16 and January 10, but these increases were generally unrelated to the fertilizer treatments. Although TKN levels increased, nutrient ratios determined as a proportion of TKN decreased, but generally remained within balance. Needle dry weights also increased at this time, but the increase was not related to the treatments applied. There were no differences in root growth potential (as measured by total new root dry weiglht) among the treatments. Seedlings that received 160 and 320 kg N/ha broke bud three days earlier than the unfertilized seedlings. Seedling cold hardiness LT50 levels on October 23, November 13, and December 9 showed no consistent significant differences among the fertilizer treatments. By December 30 all treatments had attained similar LT50 levels ( -14°C). Adding high levels of fertilizers after budset in the fall did not appear to disrupt the cold hardiness process. Detectable differences in baseline seedling variable chlorophyll fluorescence Fvar/Fmax levels among the treatments occurred on November 13 and December 30. Fertilized seedlings had consistently higher Fvar/Fmax than unfertilized seedlings. Fall fertilization to stimulate late season luxury consumption of nitrogen appears to be beneficial if conducted after seedlings have ceased growth and set bud. If no biologically significant nutrient imbalances occur as a result of fertilization, as was the case in this study (up to 320 kg N/ha), seedlings with elevated levels of nitrogen may outperform seedlings with lower levels of nitrogen.

Book Volume Equations for Second growth Douglas fir

Download or read book Volume Equations for Second growth Douglas fir written by David Bruce and published by . This book was released on 1974 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nursery Fertilization of Douglas Fir Seedlings with Different Forms of Nitrogen Classic Reprint

Download or read book Nursery Fertilization of Douglas Fir Seedlings with Different Forms of Nitrogen Classic Reprint written by M. A. Radwan and published by Forgotten Books. This book was released on 2017-11-19 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Nursery Fertilization of Douglas-Fir Seedlings With Different Forms of Nitrogen Presently, the nurseries follow different fertilization regimes Which vary basically in the amount and form of nitrogen. Although amounts of nitro gen fertilizer applied are logically based upon the fertility of the nursery soil, choice of the nitrogen source has been largely empirical. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.