Effects of Leader Topping and Branch Pruning on Efficiency of Douglas-fir Cone Harvesting with a Tree Shaker PDF Download
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Author: Donald L. Copes
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 8
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Book Description
Author: Donald L. Copes
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 8
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 648
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 172
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Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Author:
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 260
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Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 618
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Book Description
Author:
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 176
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Book Description
Silvicultural practices in the Douglas-fir region evolved through a combination of formal research, observation, and practical experience of forest managers and silviculturists, and changing economic and social factors. This process began more than a century ago and still continues. It has had a great influence on the economic well-being of the region and on the present characteristics of the regions forests. This long history is unknown to most of the public, and much of it is unfamiliar to many natural resource specialists outside (and even within) the field of silviculture. We trace the history of how we got where we are today and the contribution of silvicultural research to the evolution of forest practices. We give special attention to the large body of information developed in the first half of the past century that is becoming increasingly unfamiliar to both operational foresters andperhaps more importantlyto those engaged in forestry research. We also discuss some current trends in silviculture and silviculture-related research.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 432
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 980
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 228
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 980
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Book Description
