Production Rates in Commercial Thinning of Young-growth Douglas- Fir PDF Download
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Languages : en
Pages :
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Author:
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Author: Thomas C. Adams
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Category :
Languages : en
Pages : 0
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Author: Thomas Cooper Adams
Publisher: Forgotten Books
ISBN: 9781396156649
Category : Technology & Engineering
Languages : en
Pages : 48
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Excerpt from Production Rates in Commercial Thinning of Young-Growth Douglas-Fir Machine rates were developed from data supplied by equipment dealers, manufacturers, and logging operators. 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.
Author: Thomas Cooper Adams
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 462
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Author: Donald L. Reukema
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Category : Douglas fir
Languages : en
Pages : 44
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Author: Robert M. Randall
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Category :
Languages : en
Pages : 8
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Author: Donald L. Reukema
Publisher:
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Category : Douglas fir
Languages : en
Pages : 16
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Production of merchantable wood in even-aged Douglas-fir stands can be increased substantially by precommercial thinning. Guidelines for, and gains from, precommercial thinning both strongly depend on the size of trees wanted at the first commercial cut; the larger this size, (1) the fewer trees should be left after precommercial thinning, (2) the greater is the maximum age or tree size at which precommercial thinning is practical, and (3) the greater is the gain is usable yield from precommercial thinning. Also, generally, the longer the time required for a stand to reach commercial size without thinning, the greater the gains from precommercial thinning. These and other considerations are discussed, and procedures are recommended.
Author: Donald F. Flora
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 152
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Author: Loren D. Kellogg
Publisher:
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Category : Douglas fir
Languages : en
Pages : 28
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Using multiple linear regression equations with indicator variables, we compared both harvesting and forwarding cycle times among treatments. We conducted detailed time studies on a harvester and a forwarder and used these data to develop two regression equations to predict delay-free harvest cycle times and delay-free forwarding cycle times. Delay information was gathered from both shift-level and detailed time studies. Total costs for each treatment were obtained by combining costs for harvesting, forwarding, and moving equipment in and out for the entire operation.
Author: Robert M. Randall
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 5
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