Download or read book Fertilizing Coastal Douglas fir Forests written by Donald P. Hanley and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the benefits of well nourished trees to forest ecosystems. Results assist landowners to decide what is appropriate for their forest.

Download or read book Detecting Response of Douglas fir Plantations to Urea Fertilizer at Three Locations in the Oregon Coast Range written by Richard E. Miller and published by . This book was released on 2001 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilization and Thinning Effects on a Douglas fir Ecosystem at Shawnigan Lake written by Stephen A. Y. Omule and published by . This book was released on 2011 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the Shawnigan Lake Project (SLP), which was initiated in 1970, is to study the mechanisms of response to thinning and fertilization. The SLP study is composed of two components: a) the main experiment, and b) subsidiary studies. The main experiment, established in 1971--1972 (36 plots), investigated the effects of thinning and fertilization, and consisted of three levels of thinning and five levels of fertilization, including controls. This report focuses on the main experiment and the 32-year growth response for selected stand attributes. Report sections cover the experiment's study area and experimental design; database description; analysis methods outline; study results; and conclusions based on the experiment and results.--Includes text from document.

Download or read book Comparative Effects of Urea Fertilizer and Red Alder in a Site III Coast Douglas fir Plantation in the Washington Cascade Range written by and published by . This book was released on 2005 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five randomly assigned treatments were used to quantify effects of adding varying numbers of red alder (Alnus rubra Bong.) or nitrogen (N) fertilization on growth of a 10-year-old conifer plantation at a medium quality site in the western Washington Cascade Range. Zero, 20, 40, and 80 alder trees per acre were retained along with about 300 conifers per acre. Nearly all conifers were coast Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco). A fifth treatment substituted N fertilizer for N-fixing alder. Changes in average tree height, and in numbers of trees, basal area, and volume per acre between plantation ages of 10 and 27 are compared. In pure conifer plots, gross volume growth averaged 26 percent greater on fertilized than nonfertilized plots, indicating measurable benefits of additional N. On both fertilized and nonfertilized plots, an average of 13 percent of the original conifers died. Retaining 20, 40, or 80 alder per acre (7, 13, and 27 percent of the associated conifer trees per acre, respectively) was associated with reduced numbers of Douglas-fir by about 19, 5, and 17 percent, respectively, in the next 17 years. Mortality and growth of Douglas-fir were not related to alder density, but losses of Douglas-fir were especially large on plots where relatively large red alder (20 per acre) were retained. Neither total stand nor conifer yields were changed by retaining alder. Additional comparisons are needed at other locations, especially those with known N deficiency.

Download or read book Forest Fertilization Theory and Practice written by and published by . This book was released on 1968 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report INT written by and published by . This book was released on 1981 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report PNW GTR written by and published by . This book was released on 1999 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Genetics written by Timothy L. White and published by CABI. This book was released on 2007 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, which contains 20 chapters, integrates the varied subdisciplines of genetics and their applications in gene conservation, tree improvement and biotechnology. Topics covered include: genetic variation in natural forests, the application of genetics in tree improvement and breeding programmes, and genomic sequences and molecular technologies. This book will be a valuable resource for students, scientists and professionals in the plant sciences, especially forest geneticists, tree breeders, forest managers and other natural resource specialists.

Download or read book USDA Forest Service General Technical Report PNW written by and published by . This book was released on 1977 with total page 224 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 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Fertilization Symposium Proceedings written by and published by . This book was released on 1973 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nitrogen Fertilization in the Environment written by Peter Bacon and published by CRC Press. This book was released on 1995-01-23 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the interactions between nitrogen and the ecosystem and discusses nitrogen fertilization practices around the world. Simulation models that play an important role in determining the dynamics of source-sink relationships are presented, helping to pinpoint inefficiencies and develop strategies to synchronize nitrogen supply and demand.

Download or read book Concepts and Interpreted Examples in Advanced Fuel Modeling written by Robert E. Burgan and published by . This book was released on 1987 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Research West written by and published by . This book was released on 1979 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Effects of Precommercial Thinning Urea Fertilizer and Red Alder in a Site II Coast Douglas fir Plantation written by Richard E. Miller and published by . This book was released on 1999 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mate Choice in Plants MPB 19 Volume 19 written by Nancy Burley and published by Princeton University Press. This book was released on 2020-03-31 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book maintains that higher plants manifest some degree of sexual selection, and it begins to build a framework that unifies many features of plant reproduction previously considered unrelated. Reviewing evidence for sexual selection in plants, the authors discuss possible male-female interactions, concluding with an extensive set of hypotheses for testing. Mechanisms that could be employed in sexual selection in plants include various cellular mechanisms, such as both nuclear and cytoplasmic genetics, B chromosomes, and paternal contributions to the zygote, as well as abortion, double fertilization, delayed fertilization, and certain forms of polyembryony. This study compares the consequences of these processes for the evolution of mate choice in "gymnosperms" and angiosperms.

Download or read book Forest and Range Soils Research in Oregon and Washington written by and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: An annotated bibliography supplementing bibliographies by Tarrant for 1956 through 1963 and by Klock for 1969 through 1974.