Download or read book Release of Douglas fir Seedlings written by Phillip M. McDonald and published by . This book was released on 1986 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology and Development of Douglas fir Seedlings and Associated Plant Species in a Coast Range Plantation written by Philip M. McDonald and published by . This book was released on 1999 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Release of Douglas fir Seedlings written by Philip M. McDonald and published by . This book was released on 1986 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Repeated Manual Release in a Young Plantation written by Philip M. McDonald and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Wrenching Douglas fir Seedlings in August written by William I. Stein and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shade Increases First year Survival of Douglas fir Seedlings written by Russell A. Ryker and published by . This book was released on 1970 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Growth of Frost damaged Douglas fir Seedlings written by James W. Edgren and published by . This book was released on 1970 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Douglas fir seedlings planted by four methods written by R. O. Strothmann and published by . This book was released on 1976 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting Establishment of Douglas Fir Seedlings written by Leo Anthony Isaac and published by . This book was released on 1938 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproduction Habits of Douglas fir written by Leo Anthony Isaac and published by . This book was released on 1943 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Survival and Growth of Douglas fir by Age and Size of Nursery Stock written by James W. Edgren and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chilling Requirements for Optimal Growth of Rocky Mountain Douglas fir Seedlings written by S. P. Wells and published by . This book was released on 1979 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Douglas fir Survival and Growth in Response to Spring Planting Date and Depth written by R. O. Strothmann and published by . This book was released on 1971 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Douglas fir Seedlings to Nitrogen Sulfur and Phosphorus Fertilizers written by M. A. Radwan and published by . This book was released on 1985 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relationship of Shoot root Ration to Survival and Growth of Outplanted Douglas fir and Ponderosa Pine Seedlings written by W. Lopushinsky and published by . This book was released on 1976 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Repeated Manual Release in a Young Plantation written by Philip M. McDonald and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Foliar Mineral Content of Forest and Nursery grown Douglas fir Seedlings written by Kenneth William Krueger and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: