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Book Twenty Year Growth of Ponderosa Pine Saplings Thinned to Five Spacings in Central Oregon Classic Reprint

Download or read book Twenty Year Growth of Ponderosa Pine Saplings Thinned to Five Spacings in Central Oregon Classic Reprint written by James Willis Barrett and published by Forgotten Books. This book was released on 2018-09-09 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Twenty-Year Growth of Ponderosa Pine Saplings Thinned to Five Spacings in Central Oregon Stand density and understory vegeta tion have had significant effects on height growth throughout 20 years of observation following thinning. Under story vegetation has had the greatest effect on height growth at the wider spacings, reducing growth from 15 to 50 percent during some periods. Twenty years after thinning, low density plots contain less woo'd fiber than high density plots. On the other hand, widely spaced trees are much larger than narrowly spaced trees and collectively are now producing almost as much wood volume annually as high density plots. Even though most of the trees left after thinning were 70 years old, stagnated, and suppressed by overstory, they have responded well to overstory removal and release, and trees at the three widest spacings appear capable of producing a usable crop of timber despite their advanced age. 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 Twenty year Growth of Ponderosa Pine Saplings Thinned to Five Spacings in Central Oregon

Download or read book Twenty year Growth of Ponderosa Pine Saplings Thinned to Five Spacings in Central Oregon written by James W. Barrett and published by . This book was released on 1982 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Ponderosa Pine Lodgepole Pine Spacing Study in Central Oregon

Download or read book A Ponderosa Pine Lodgepole Pine Spacing Study in Central Oregon written by Kenneth W. Seidel and published by Forgotten Books. This book was released on 2018-09-09 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Ponderosa Pine-Lodgepole Pine Spacing Study in Central Oregon: Results After 20 Years Twenty years after planting, the net volume yield of pure ponderosa pine and pure lodgepole pine at the five spacings reflect the pattern of growth during this time - less wood produced by ponderosa pine at the 6 9 and 12-foot spacings and more wood produced at the 15 and 18-foot spacings when compared to lodgepole pine. 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 Large crowned Planted Ponderosa Pine Respond Well to Thinning

Download or read book Large crowned Planted Ponderosa Pine Respond Well to Thinning written by James Willis Barrett and published by . This book was released on 1972 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Twenty Year Growth of Thinned and Unthinned Ponderosa Pine in the Methow Valley of Northern Washington Classic Reprint

Download or read book Twenty Year Growth of Thinned and Unthinned Ponderosa Pine in the Methow Valley of Northern Washington Classic Reprint written by James W. Barrett and published by Forgotten Books. This book was released on 2018-09-09 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Twenty-Year Growth of Thinned and Unthinned Ponderosa Pine in the Methow Valley of Northern Washington Keywords: Thinning effects, increment, stand density, improvement cutting, ponderosa pine, Pinus ponderosa. 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 Self Fertility of a Central Oregon Source of Ponderosa Pine Classic Reprint

Download or read book Self Fertility of a Central Oregon Source of Ponderosa Pine Classic Reprint written by Frank C. Sorensen and published by Forgotten Books. This book was released on 2019-01-27 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Self-Fertility of a Central Oregon Source of Ponderosa Pine Germination tests were conducted using seeds with full-sized embryos (i. E. Seeds with embryos greater than three quarters the length of the embryo cavity). Except for five families which had too few seeds, 100-seed lots were germinated in a commercial germinator at 30° C. Day temperature and 20° C. Night temperature with 12-hour photoperiods and thermo periods. Prior to germination, seeds were stratified for 3 weeks at 5° C. The germination test was discontinued when no germination had occurred for a period of 1 week. 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 Growth of Planted Ponderosa Pine Thinned to Different Stocking Levels in Northern California

Download or read book Growth of Planted Ponderosa Pine Thinned to Different Stocking Levels in Northern California written by William W. Oliver and published by . This book was released on 1979 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth was strongly related to growing stock level (GSL) for 5 years after thinning 20-year-old poles on Site Index50 115 land at the Elliot Ranch Plantation in northern California. Five GSL's- basal areas anticipated when trees average 10 inches d. b. h. or more - ranging from 40 to 160 square feet per acre were tested. Periodic annual increment (PAI) in diameter decreased curvilinearly from 0.51 to 0.21 inch, with increasing GSL's from 40 to 160. But only trees in plots heavily thinned to GSL 40 (and briefly in GSL 70) grew faster in diameter after thinning than these same trees grew before thinning. PAI in basal area and net volume rose steadily with increasing GSL9s, reaching 9.0 square feet and 255 cubic feet per acre, respectively, at GSL 160. Apparently, even light thinning reduced volume production, but thinning still is recommended to shorten time until first commercial entry and to promote stand health.

Book Response of Thinned Ponderosa Pine to Fertilization

Download or read book Response of Thinned Ponderosa Pine to Fertilization written by P. H. Cochran and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Response of Individual Ponderosa Pine Trees to Fertilization

Download or read book Response of Individual Ponderosa Pine Trees to Fertilization written by P. H. Cochran and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Ponderosa Pine Saplings Respond to Control of Spacing and Understory Vegetation Classic Reprint

Download or read book Ponderosa Pine Saplings Respond to Control of Spacing and Understory Vegetation Classic Reprint written by James W. Barrett and published by Forgotten Books. This book was released on 2018-09-07 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Ponderosa Pine Saplings Respond to Control of Spacing and Understory Vegetation Recent forest inventories indicate that about 5 million acres of commercial pon derosa pine forest land east of the Cascade Range in Washington and Oregon have a dense understory of suppressed trees.l On many additional acres, the overstory has been re moved, leaving dense thickets of 40 to 80-year-old, sapling-sized trees. Some man agers have chosen to thin these residual stands while others, still hesitant about the invest ment in thinning, have elected to let the understory develop naturally. Most agree, however, that if these stands are to make reasonable progress toward producing a merchantable product, they must be thinned. The type of precommercial thinning selected for these stands may imply the product mix of a multiple use manager or the anticipated market of a private com pany. If a forester chooses a narrow spacing, he is forecasting a market for small trees by the time the next thinning is needed. On the other hand, choice of a wide spacing implies that the forester is aiming toward larger trees suitable for sawing or peeling or that he is interested in increasing forage and/or water yields. Both routes may be equally productive. Since optimum tree spacing depends on product objective, the forester must know the growth possibilities at a number of spacings to satisfy varied management objectives. In addition, he needs to know the competitive effects of understory vegetation, soil moisture availability, and limb development, all of which can affect the production of useful wood. 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.