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Articles 1 - 8 of 8
Full-Text Articles in Plant Sciences
Biofuel Feedstocks: The Risk Of Future Invasions, Joseph M. Ditomaso, Jacob N. Barney, Allison M. Fox
Biofuel Feedstocks: The Risk Of Future Invasions, Joseph M. Ditomaso, Jacob N. Barney, Allison M. Fox
All U.S. Government Documents (Utah Regional Depository)
In an effort to decrease greenhouse gas emissions, expand domestic energy production, and maintain economic growth, public and private investments are being used to pursue dedicated feedstock crops for biofuel production. Unlike food crops grown for grain-based ethanol (e.g., corn), which require high inputs of fertilizers and pesticides and typically are grown on prime agricultural land, proposed lignocellulose-based energy crops (e.g., switchgrass) typically have a neutral or negative carbon budget, require relatively few economic or environmental inputs, and can be cultivated on marginal, lower-productivity land. Thus, a rapidly growing industry related to crop selection, cultivar improvement, and conversion technilogies is …
Bromacil, Ecological Risk Assessment, Final Report, Ensr International
Bromacil, Ecological Risk Assessment, Final Report, Ensr International
All U.S. Government Documents (Utah Regional Depository)
The Bureau of Land Management (BLM), United States Department of the Interior (USDI), is proposing a program to treat vegetation on up to six million acres of public lands annually in 17 western states in the continental United States (US) and Alaska. As part of this program, the BLM is proposing the use of ten herbicide active ingredients (a.i.) to control invasive plants and noxious weeds on approximately one million of the six million acres proposed for treatment. The BLM and its contractor, ENSR, are preparing a Vegetation Treatments Programmatic Environmental Impact Statement (EIS) to evaluate this and other proposed …
Cooperation And Coordination Are Invasive Species: Important For Effective Management Of Invasive Weeds, U.S. Government Accountability Office
Cooperation And Coordination Are Invasive Species: Important For Effective Management Of Invasive Weeds, U.S. Government Accountability Office
All U.S. Government Documents (Utah Regional Depository)
Invasive weeds, native or nonnative plant species, cause harm to natural areas such as rangelands or wildlife habitat and economic impacts due to lost productivity of these areas. While the federal investment in combating invasive species is substantial most has been concentrated on agricultural lands, not on natural areas. In this report, GAO describes (1) the entities that address invasive weeds in natural areas and the funding sources they use; (2) federal, state, and local weed management officials’ views on the barriers to weed management; and (3) their opinions about how additional resources for weed management could be distributed. GAO …
Big Sagebrush Response To One-Way And Two-Way Chaining In Southeastern Utah, John A. Fairchild, James N. Davis, Jack D. Brotherson, Usda Forest Service
Big Sagebrush Response To One-Way And Two-Way Chaining In Southeastern Utah, John A. Fairchild, James N. Davis, Jack D. Brotherson, Usda Forest Service
All U.S. Government Documents (Utah Regional Depository)
A decadent, mixed stand of Wyoming big sagebrush, Artemisia tridentata wyomingensis, and mountain big sagebrush, Artemisia tridentata vaseyana, located north of Cisco, Utah, was subjected to one-way and two-way chaining treatments in November 1987. The effect of the treatments on plant community characteristics and shrub vigor was documented over a 3-year period. Stand density was reduced 60 percent on sites chained two ways and 43 percent on sites chained over once. Shrubs on one-way chained sites produced more leader growth in 1989 and 1990 than those on untreated sites or sites chained two ways. Browse production on one-way chained sites …
Western Rangeland Noxious Weeds: Collecting, Sharing And Using Information, U.S. Department Of The Interior, Usda, Charles Valentine Riley Memorial Foundation
Western Rangeland Noxious Weeds: Collecting, Sharing And Using Information, U.S. Department Of The Interior, Usda, Charles Valentine Riley Memorial Foundation
All U.S. Government Documents (Utah Regional Depository)
Western rangeland weeds such as yellow starthistle, leafy spurge, Canada thistle and Russian knapweed are causing tremendous losses to agricultural industries including both crop and livestock production. Concurrently, many public lands managed by federal agencies are being steadily invaded. As a result, these lands held in the public trust are experiencing reductions in commodity yields, recreational opportunities, biodiversity and ecosystem function. Consequently, every state in the West has noxious weed management programs that endeavor to enhance the financial and technical resources available for weed management and to assist in coordination across the diverse public and private land ownership mosaic common …
The Identification, Distribution, Impacts, Biology And Management Of Noxious Rangeland Weeds, Roger L. Sheley
The Identification, Distribution, Impacts, Biology And Management Of Noxious Rangeland Weeds, Roger L. Sheley
All U.S. Government Documents (Utah Regional Depository)
This document provides a discussion of the biology and management of exotic rangeland weeds which are a threat to native ecosystems of the western United States. Chapter 1 describes a generalized approach for managing noxious weed infested rangeland, while Chapter 2 focuses on preventing noxious weed invasion. In some cases, noxious weeds readily invade riparian areas, and because of the sensitive nature of these ecosystems Chapter 3 is devoted to riparian weed management. The following 13 chapters describe the identification, origin, history, distribution, potential invasion, impacts, biology and ecology, and management of specific noxious rangeland weeds.
Rangeland Inventory And Monitoring: Supplemental Studies., U.S. Bureau Of Land Management
Rangeland Inventory And Monitoring: Supplemental Studies., U.S. Bureau Of Land Management
All U.S. Government Documents (Utah Regional Depository)
A technical reference document containing the rangeland inventory and monitoring techniques historically used in the Bureau of Land Management since formation of the Grazing Service
Contributions From The United States National Herbarium, Volume 25: Flora Of Utah And Nevada, Ivar Tidestrom, Smithsonian Institution
Contributions From The United States National Herbarium, Volume 25: Flora Of Utah And Nevada, Ivar Tidestrom, Smithsonian Institution
All U.S. Government Documents (Utah Regional Depository)
The region embracing the States of Utah and Nevada is much diversified as to both topography and plant covering. Though lying wholly within the arid portion of the United States, it contains high mountains separated one from another by dry desert valleys or by table-lands. The region affords a highly varied topography, and its flora ranges from arctic to subtropical and from truly desert elements to the humid elements of the Rocky Mountains and the Sierra Nevada. With the one hundred and ninth meridian for its eastern boundary and the one hundred and twentieth for its western, the greatest breadth …