West Coast Tree Improvement Programs
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West Coast Tree Improvement Programs
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Author : F. Thomas Ledig
language : en
Publisher:
Release Date : 1981
West Coast Tree Improvement Programs written by F. Thomas Ledig and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Douglas fir categories.
Three tree improvement programs were analyzed by break-even, cost-benefit technique: one for ponderosa pine in the Pacific Northwest, and two for Douglas-fir in the Pacific Northwest-one of low intensity and the other of high intensity. A return of 8 percent on investment appears feasible by using short rotations or by accompanying tree improvement with thinning. Interest rates, length of rotation, the inclusion of thinnings, and site index had greater effects on profitability than program design. Large breeding zones improved profitability, although they incur the biological risks of nonadaptation to local conditions and loss of local genetic resources. Increasing orchard seed yield affected the results only slightly unless the planting program could be expanded, which is equivalent to increasing the size of the breeding zone. If the increase in seed yield merely reduced the required acreage of seed orchard and associated costs, the financial results improved only slightly.
West Coast Tree Improvement Programs
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Author : F. Thomas Ledig
language : en
Publisher:
Release Date : 1981
West Coast Tree Improvement Programs written by F. Thomas Ledig and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
Establishment Of A Western Hemlock Tree Improvement Program In Coastal British Columbia
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Author : Piesch, R. F
language : en
Publisher: victoria, b. c. : canadian forestry service
Release Date : 1974
Establishment Of A Western Hemlock Tree Improvement Program In Coastal British Columbia written by Piesch, R. F and has been published by victoria, b. c. : canadian forestry service this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Forest genetics categories.
Tree Improvement Plan For Northeastern Area State And Private Forestry United States Department Of Agriculture Forest Service
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Author : Leroy C. Johnson
language : en
Publisher:
Release Date : 1984
Tree Improvement Plan For Northeastern Area State And Private Forestry United States Department Of Agriculture Forest Service written by Leroy C. Johnson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Forest genetics categories.
Tree Improvement Program U S Forest Service Calif Region
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Author :
language : en
Publisher:
Release Date : 1963
Tree Improvement Program U S Forest Service Calif Region written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
Tree Improvement Plan For Northeastern Area
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Author :
language : en
Publisher:
Release Date : 1984
Tree Improvement Plan For Northeastern Area written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Forest management categories.
Third Progress Report Of The Inland Empire Forest Tree Improvement Program
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Author : Inland Empire Forest Tree Improvement Program
language : en
Publisher:
Release Date : 1979
Third Progress Report Of The Inland Empire Forest Tree Improvement Program written by Inland Empire Forest Tree Improvement Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Trees categories.
Ifa Tree Improvement Newsletter
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Author :
language : en
Publisher:
Release Date : 1974
Ifa Tree Improvement Newsletter written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Forest genetics categories.
Usda Forest Service Research Paper Psw
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Author : Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
language : en
Publisher:
Release Date : 1978
Usda Forest Service Research Paper Psw written by Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Forests and forestry categories.
Annual Report
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Author : N.C. State-Industry Cooperative Tree Improvement Program
language : en
Publisher:
Release Date : 1963
Annual Report written by N.C. State-Industry Cooperative Tree Improvement Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Forests and forestry categories.