Download or read book Effects of Herbicides Burning and Reseeding of Desirable Forages for Control of Medusahead Taeniatherum Caput medusae written by Travis M. Osmond and published by . This book was released on 2003 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Herbicides and Burning on Medusahead Control and Establishment of Desirable Forages on Upland Ranges written by John M. Squire and published by . This book was released on 1993 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of Medusahead elymus Caput medusae L Management on Plant Communities in California s Valley Grasslands written by Nicole Carpenter and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: California's valley grasslands are one of the most invaded ecosystems in the state. It is estimated that valley grasslands contain between 90 to 99% cover of non-native plants. The most recent wave of invasive plants has included medusahead (Elymus caput-medusae L.). Medusahead is an annual grass that matures two to four weeks later than most other grasses. Management of medusahead includes the use of herbicides, targeted grazing, prescribed burns, and mechanical control. The primary focus of most studies on the use of these management methods is on the control of medusahead rather than the impacts on non-target plants. This study examines published research to determine what impact medusahead management has on the composition of plant communities within valley grasslands. Herbicides have mixed impacts on the percent cover of grasses and forbs. Targeted grazing resulted in decreased percent cover of non-native grasses and increased forb cover. Grazing results in neutral to increased percent cover of native plants. Prescribed burns decreased the percent cover of non-native grasses, increased forb cover, and had mixed impacts on native plant cover. Mechanical control shifted vegetative states towards forb or filaree (Erodium spp.) dominated communities. The non-target impacts of medusahead control were generally short-lived with differences in percent cover returning to baseline conditions within one to three years. To mitigate the non-target impacts of medusahead, revegetation efforts should be prioritized in sites with higher abundances of native plant species. The future success of controlling medusahead is dependent upon grassland restoration research, consistent funding for weed management areas to aid in managing invasive plants, and the implementation of monitoring after medusahead control treatments.
Download or read book Effects of Mesquite Spraying on Other Rangeland Resources written by Ronald E. Sosebee and published by . This book was released on 1980 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Technology written by and published by . This book was released on 2007 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbicides and Wildlife Habitat written by and published by . This book was released on 1990 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Study of Competition Between Medusahead Taeniatherum Caput medusae Ssp Asperum Simk Melderis and Squirreltail Elymus Elymoides Raf Swezey written by David Clausnitzer and published by . This book was released on 1996 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medusahead (Taeniatherum caput-medusae ssp. asperum (Simk.) Melderis) is a Eurasian annual grass that infests large areas of U.S. rangelands, dominating former bunchgrass/shrub sites. Squirreltail (Elymus elymoides (Raf.) Swezey) is a native perennial grass that has demonstrated the ability to establish in stands of medusahead. A study conducted on two sites near Burns, OR had the objectives of quantifying competition between medusahead and squirreltail, and determining the effect of moisture availability on competition. Two hundred plots were arranged in a factorial design. Measurements were taken of plant growth, seed production, soil moisture, and climate. Results for the two years are contrasting. The first year was very dry. Medusahead grew and reproduced well, producing a seed crop up to 10 times the amount planted; squirreltail grew poorly and did not reproduce. Samples of squirreltail seed retrieved from the plots in late summer were found to have remained dormant since seeding. The second year had above-average precipitation. Medusahead grew and reproduced well again. Squirreltail grew and reproduced abundantly on one of the sites, both on freshly-seeded plots and on plots containing dormant seeds and surviving plants from the previous year. In all cases, medusahead exhibited stronger interspecific and intraspecific competitive effects than did squirreltail seedlings. With adequate soil moisture, squirreltail reduced average weight and median seed production of individual medusahead plants, but did not reduce medusahead seed production per square meter. Medusahead succeeded in a drought year by utilizing deep soil moisture, and utilized shallower moisture in a wet year. During a wet year in plots containing mature squirreltail, medusahead utilized shallower moisture, while squirreltail strongly utilized much deeper moisture. Interspecific competitive interference by medusahead on squirreltail seedlings suggests the potential benefits of suppressing medusahead during the seeding year for squirreltail in a rehabilitation effort, especially if climatic conditions are conducive to squirreltail germination and establishment.
Download or read book Response of Camphorweed and Associated Vegetation to Herbicides and Prescribed Burning written by J. L. Mutz and published by . This book was released on 1981 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California Agriculture written by and published by . This book was released on 2017 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Station Bulletin written by and published by . This book was released on 1961 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Herbicides Application on Weed and Tall Fescue Management and Grazing Distribution in Missouri Pastures written by Bryan C. Sather and published by . This book was released on 2012 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: One weed that is of concern in Missouri pastures that can be detrimental is Northern dewberry (Rubus flagellaris Willd.). This weed can be detrimental due its production of spines which can injure grazing animals and also humans. Results from our study show that herbicide applications made in the fall that contain metsulfuron will provide approximately 50% control of this weed, but where severe infestations exist a follow-up application will be required. Tall fescue can also be detrimental to the health of grazing animals. It can contain a fungus known as ergovaline which is in its highest concentration in tall fescue seedheads. Applying herbicides at certain growth stages can reduce tall fescue seedhead density. Applications of metsulfuron-containing herbicides at the boot stage of growth reduced tall fescue seedhead density the most compared to vegetative stage applications of these same herbicides. The distribution of cattle grazing in mixed tall fescue and legume pastures is also an important aspect of pasture management. Overgrazing of certain areas in pastures can cause an increase in weed growth and also reduce the growth of desirable forage. However, many producers are skeptical of treating pastures with broadcast herbicide applications as almost all herbicides available for broadleaf weed control in a pasture setting will eliminate other desirable forage species such as clover. Through this research, it was determined that even with the elimination of legumes, cattle grazing distribution can be increased in herbicide-treated pastures compared to non-treated areas within the same pasture.
Download or read book Station Bulletin written by Thomas O. Hilken and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rangeland Systems written by David D. Briske and published by Springer. This book was released on 2017-04-12 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. This book provides an unprecedented synthesis of the current status of scientific and management knowledge regarding global rangelands and the major challenges that confront them. It has been organized around three major themes. The first summarizes the conceptual advances that have occurred in the rangeland profession. The second addresses the implications of these conceptual advances to management and policy. The third assesses several major challenges confronting global rangelands in the 21st century. This book will compliment applied range management textbooks by describing the conceptual foundation on which the rangeland profession is based. It has been written to be accessible to a broad audience, including ecosystem managers, educators, students and policy makers. The content is founded on the collective experience, knowledge and commitment of 80 authors who have worked in rangelands throughout the world. Their collective contributions indicate that a more comprehensive framework is necessary to address the complex challenges confronting global rangelands. Rangelands represent adaptive social-ecological systems, in which societal values, organizations and capacities are of equal importance to, and interact with, those of ecological processes. A more comprehensive framework for rangeland systems may enable management agencies, and educational, research and policy making organizations to more effectively assess complex problems and develop appropriate solutions.
Download or read book Exotic Brome Grasses in Arid and Semiarid Ecosystems of the Western US written by Matthew J. Germino and published by Springer. This book was released on 2016-01-22 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasions by exotic grasses, particularly annuals, rank among the most extensive and intensive ways that humans are contributing to the transformation of the earth’s surface. The problem is particularly notable with a suite of exotic grasses in the Bromus genus in the arid and semiarid regions that dominate the western United States, which extend from the dry basins near the Sierra and Cascade Ranges across the Intermountain Region and Rockies to about 105° longitude. This genus includes approximately 150 species that have a wide range of invasive and non-invasive tendencies in their home ranges and in North America. Bromus species that became invasive upon introduction to North America in the late 1800’s, such as Bromus tectorum and B. rubens, have since became the dominant cover on millions of hectares. Here, millenia of ecosystem development led to landscapes that would otherwise be dominated by perennial shrubs, herbs, and biotic soil crusts that were able to persist in spite of variable and scarce precipitation. This native ecosystem resilience is increasingly coveted by land owners and managers as more hectares lose their resistance to Bromus grasses and similar exotics and as climate, land use, and disturbance-regime changes are also superimposed. Managers are increasingly challenged to glean basic services from these ecosystems as they become invaded. Exotic annual grasses reduce wildlife and livestock carrying capacity and increase the frequency and extent of wildfi res and associated soil erosion. This book uses a unique ecoregional and multidisciplinary approach to evaluate the invasiveness, impacts, and management of the large Bromus genus. Students, researchers, and practitioners interested in Bromus specifically and invasive exotics in general will benefit from the depth of knowledge summarized in the book.
Download or read book Biology and Management of Noxious Rangeland Weeds written by Roger L. Sheley and published by . This book was released on 1999 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: In addition to the theory and principles of weed management, this book provides information about twenty-nine of the most serious weeds in the West, including weed identification, origin, history and distribution, invasion potentials, biology and ecology, and specific management options. Full-color photographs and distribution maps help illustrate the plants and the invasive threat they pose. An invaluable resource for land managers, resource specialists, and students of natural resource management, Biology and Management of Noxious Rangeland Weeds provides practical, science-based information needed for sustainable weed management and land restoration.
Download or read book California Grasslands written by Mark R. Stromberg and published by Univ of California Press. This book was released on 2007-12-03 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This highly synthetic and scholarly work brings together new and important scientific contributions by leading experts on a rich diversity of topics concerning the history, ecology, and conservation of California's endangered grasslands. The editors and authors have succeeded admirably in drawing from a great wealth of recent research to produce a widely accessible and compelling, state-of-the-art treatment of this fascinating subject. Anyone interested in Californian biodiversity or grassland ecosystems in general will find this book to be an invaluable resource and a major inspiration for further research, management, and restoration efforts."—Bruce G. Baldwin, W. L. Jepson Professor and Curator, UC Berkeley "Grasses and grasslands are among the most important elements of the California landscape. This is their book, embodying the kind of integrated view needed for all ecological communities in California. Approaches ranging across an incredibly broad spectrum -- paleontology and human history; basic science and practical management techniques; systematics, community ecology, physiology, and genetics; physical factors such as water, soil nutrients, atmospherics, and fire; biological factors such as competition, symbiosis, and grazing -- are nicely tied together due to careful editorial work. This is an indispensable reference for everyone interested in the California environment."—Brent Mishler, Director of the University & Jepson Herbaria and Professor of Integrative Biology, UC Berkeley "The structure and function of California grasslands have intrigued ecologists for decades. The editors of this volume have assembled a comprehensive set of reviews by a group of outstanding authors on the natural history, structure, management, and restoration of this economically and ecologically important ecosystem."—Scott L. Collins, Professor of Biology, University of New Mexico
Download or read book Noxious Weed Field Guide for Utah written by Corey V. Ransom and published by . This book was released on 2017-06-09 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Noxious Weed Field Guide for Utah
