Release Of Douglas Fir Seedlings

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Release Of Douglas Fir Seedlings

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Author : Phillip M. McDonald
language : en
Publisher:
Release Date : 1986

Release Of Douglas Fir Seedlings written by Phillip M. McDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Douglas fir categories.

Release Of Douglas Fir Seedlings

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Author : Philip M. McDonald
language : en
Publisher:
Release Date : 1986

Release Of Douglas Fir Seedlings written by Philip M. McDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.

Ecology And Development Of Douglas Fir Seedlings And Associated Plant Species In A Coast Range Plantation

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Author : Philip M. McDonald
language : en
Publisher:
Release Date : 1999

Ecology And Development Of Douglas Fir Seedlings And Associated Plant Species In A Coast Range Plantation written by Philip M. McDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Douglas fir categories.

Repeated Manual Release In A Young Plantation

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Author : Philip M. McDonald
language : en
Publisher:
Release Date : 1994

Repeated Manual Release In A Young Plantation written by Philip M. McDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Douglas fir categories.

Douglas-fir seedlings on the Arcata Resource Area, Bureau of Land Management, U.S. Department of the Interior, in central coastal California, were released by chain sawing and grubbing competing vegetation around them at different frequencies (0, 2, and 3 grubbings) over a 5-year period. After 5 years, average Douglas-fir stem diameter (measured at 12 inches above mean groundline) of seedlings grubbed at ages 1,2, and 5 was 0.91 inches, and of seedlings grubbed after the first and fifth growing season was 0.95 inches. Both were significantly larger than counterparts in the control (0.57 inches). Tanoak, the most competitive species, constituted 84 percent of total plant cover in the control after 5 years, but only 25 percent on treated plots. Combined shrubs varied little between the untreated control and treated plots and averaged about 7 percent of total foliar cover. Grasses were not present in the control and only for the fifth year in treated plots. The most abundant forb, a hedge nettle, increased greatly in density in both control and treated plots. These relationships and others denoted in the paper yield valuable ecological information on species and community dynamics in both a natural and treated environment. Crew time (no overhead or travel costs) for the three grubbings was 52 hours and for the two grubbings was 44 hours.

Shade Increases First Year Survival Of Douglas Fir Seedlings

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Author : Russell A. Ryker
language : en
Publisher:
Release Date : 1970

Shade Increases First Year Survival Of Douglas Fir Seedlings written by Russell A. Ryker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Douglas fir categories.

Factors Affecting Establishment Of Douglas Fir Seedlings

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Author : Leo Anthony Isaac
language : en
Publisher:
Release Date : 1938

Factors Affecting Establishment Of Douglas Fir Seedlings written by Leo Anthony Isaac and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1938 with Douglas-fir categories.

Growth Of Frost Damaged Douglas Fir Seedlings

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Author : James W. Edgren
language : en
Publisher:
Release Date : 1970

Growth Of Frost Damaged Douglas Fir Seedlings written by James W. Edgren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Douglas fir categories.

Effect Of Freezer Storage On Bud Dormancy Release In Douglas Fir Seedlings

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Author : G. A. Ritchie
language : en
Publisher:
Release Date : 1984

Effect Of Freezer Storage On Bud Dormancy Release In Douglas Fir Seedlings written by G. A. Ritchie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.

Wrenching Douglas Fir Seedlings In August

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Author : William I. Stein
language : en
Publisher:
Release Date : 1984

Wrenching Douglas Fir Seedlings In August written by William I. Stein and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Douglas fir categories.

Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers

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Author : M. A. Radwan
language : en
Publisher:
Release Date : 1985

Response Of Douglas Fir Seedlings To Nitrogen Sulfur And Phosphorus Fertilizers written by M. A. Radwan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Douglas fir categories.