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Proceedings Eighth Annual Forest Vegetation Management Conference November 5 6 1986 Sacramento California
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Book Synopsis Vegetation Trends in a Young Conifer Plantation After Grazing, Grubbing, and Chemical Release by : Philip M. McDonald
Download or read book Vegetation Trends in a Young Conifer Plantation After Grazing, Grubbing, and Chemical Release written by Philip M. McDonald and published by . This book was released on 1996 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vegetative Trends in a Young Conifer Plantation After 10 Years of Grazing by Sheep by : Philip M. McDonald
Download or read book Vegetative Trends in a Young Conifer Plantation After 10 Years of Grazing by Sheep written by Philip M. McDonald and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vegetation Management for Reforestation (CA,OR,NV) by :
Download or read book Vegetation Management for Reforestation (CA,OR,NV) written by and published by . This book was released on 1989 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Final Environmental Impact Statement, Pacific Southwest Region, Vegetation Management for Reforestation: Appendixes A through H by : United States. Forest Service. Pacific Southwest Region
Download or read book Final Environmental Impact Statement, Pacific Southwest Region, Vegetation Management for Reforestation: Appendixes A through H written by United States. Forest Service. Pacific Southwest Region and published by . This book was released on 1989 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reforestation and Afforestation by : Karl Schneider
Download or read book Reforestation and Afforestation written by Karl Schneider and published by . This book was released on 1991 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Visitor Perceptions of Crowding and Discrimination at Two National Forests in Southern California by : Deborah J. Chavez
Download or read book Visitor Perceptions of Crowding and Discrimination at Two National Forests in Southern California written by Deborah J. Chavez and published by . This book was released on 1993 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Competing Vegetation in Ponderosa Pine Plantations by : Philip M. McDonald
Download or read book Competing Vegetation in Ponderosa Pine Plantations written by Philip M. McDonald and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planted ponderosa pine (Pinus ponderosa Dougl. ex Laws. var. ponderosa) seedlings in young plantations in California are at a disadvantage compared with competing shrubs, forbs, and grasses. In many instances, roots of competing plants begin expanding and exploiting the soil earlier and in greater numbers, thereby capturing the majority of available resources and lowering pine survival and growth. Competition thresholds or "how much is too much?" are: for treatments where a cleared radius is prescribed, no weeds are acceptable within the space needed for maximum growth of pine seedlings during the establishment period; for treatments involving the entire area, crown cover values of 10 to 30 percent seem to be the level beyond which shrub competition significantly affects pine growth. Methods for preparing the site, which include mechanical and chemical methods, use of fire, and combinations of treatments, show the interaction of site and ensuing vegetation. Techniques for controlling competing vegetation from seed include preventing such plants from getting started by use of preemergent herbicides or mats (collars). To prevent sprouting, hardwood trees and large shrubs can be pushed over, thereby getting the root crown out of the ground, or if still in the soil, grinding it out with a machine. Once present, the effect of weeds from seed can be minimized by grubbing or spraying when young, by grazing plants with cattle or sheep, or by introducing plants of low competitive ability. Once sprouting weeds are present, their effect can be minimized by spraying with chemicals, or if palatable, by grazing with cattle or sheep. Costs range from as low as $10 per acre ($25/ha) for aerially applying herbicides to $711 per acre ($1757/ha) for grinding out tanoak stumps.
Book Synopsis Repeated Manual Release in a Young Plantation by : Philip M. McDonald
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.
Book Synopsis Combining Silviculture and Landscape Architecture to Enhance the Roadside View by : Philip M. McDonald
Download or read book Combining Silviculture and Landscape Architecture to Enhance the Roadside View written by Philip M. McDonald and published by . This book was released on 1998 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Timing and Duration of Release Treatments Affect Vegetation Development in a Young California White Fir Plantation by : Philip M. McDonald
Download or read book Timing and Duration of Release Treatments Affect Vegetation Development in a Young California White Fir Plantation written by Philip M. McDonald and published by . This book was released on 2001 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW. written by and published by . This book was released on 1990 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quick Bibliography Series written by and published by . This book was released on 1976 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Management of Western Dwarf Mistletoe in Ponderosa and Jeffrey Pines in Forest Recreation Areas by : Robert F. Scharpf
Download or read book Management of Western Dwarf Mistletoe in Ponderosa and Jeffrey Pines in Forest Recreation Areas written by Robert F. Scharpf and published by . This book was released on 1988 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mulches Aid in Regenerating California and Oregon Forests by : Philip M. McDonald
Download or read book Mulches Aid in Regenerating California and Oregon Forests written by Philip M. McDonald and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of mulches as a reforestation tool in Oregon and California began primarily in the late 1950's. Many types of mulches were tried including sheets of plastic, newspaper, and plywood; various thicknesses of bark, sawdust, sand, and straw; sprayed-on petroleum resin; and even large plastic buckets. Most proved to be ineffective, costly or both. Early trials tended to use small, short-lived materials that aided conifer seedling survival, but not growth. Compared to other weed-control techniques available at the time, mulches were rather expensive. Current trends are to apply longer-lived, somewhat larger mulches of mostly sheet materials made of reinforced paper, polyester, or polypropylene. When the various costs of mulching (material, installation, and maintenance) are totalled, the overall cost of the technique continues to be high. Recently, new mulch materials of polyester, polypropylene, or combinations of both have allowed silviculturists to consider large, durable mulches (10 by 10 feet or 3 by 3 m) for enhancement of growth (not just survival), and to control plants with stiffer stems.
Book Synopsis Surveying Marbled Murrelets at Inland Forested Sites by :
Download or read book Surveying Marbled Murrelets at Inland Forested Sites written by and published by . This book was released on 1990 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Scientific Basis for Silvicultural and Management Decisions in the National Forest System by :
Download or read book The Scientific Basis for Silvicultural and Management Decisions in the National Forest System written by and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Note PSW. written by and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
