Download or read book Predicting Herbicide Dissipation in Container Nursery Crop Production A Method for Improving Herbicide Performance and Reducing Hand Weeding written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In southeastern U.S. container nursery crop production, frequent applications of preemergence herbicides supplemented by hand weeding are relied upon for broad-spectrum weed control during the growing season. Experiments were conducted to determine the aqueous concentrations required for weed control, to relate this to surface-applied rates, and to determine trifluralin dissipation in container substrates. Petri dish experiments were conducted to determine the aqueous concentration required for control of common nursery weeds including) were also included as potential bioassay species. Herbicides evaluated were isoxaben, oryzalin, and trifluralin. The relative response of weeds to aqueous concentrations was similar to that observed in efficacy trials. Concentrations of Gallery required for 80% inhibition (I80) were 1.3 and 0.4 for eclipta, 0.4 and 3.9 for hairy bittercress, 0.5 and 0.3 for spotted spurge, 1.5 and 0.3 for large crabgrass, and 1.6 and 0.1 ug ai/mL for lettuce shoot and root, respectively. I80 values for Surflan were 9.8 and 0.4 for eclipta, 5.9 and 1.6 for hairy bittercress, 1.2 and 1.4 for spotted spurge, 1.2 and 0.1 for large crabgrass, and 17.4 and 0.6 ug ai/mL for lettuce shoot and root, respectively. I80 values for Treflan were 73.8 and 3.4 for eclipta, 17.3 and 7.4 for hairy bittercress, 6.2 and 9.2 for spotted spurge, 1.1 and 0.5 for large crabgrass, 7.2 and 8.4 for lettuce, and 0.9 and 1.2 ug ai/mL for perennial ryegrass shoot and root, respectively. Oat I80 values were well beyond the concentration range tested and extrapolated values were not realistic for Gallery and Surflan. However, Treflan I80 values were 0.5 and 2.1 ug ai/mL for shoot and root inhibition, respectively. Treflan dose-response experiments were conducted in the greenhouse and outdoors to determine the surface-applied rates necessary for preemergence control of large crabgrass and perennial ryegrass. The rates of Treflan in the greenhouse were 0.07 to 2.24 kg ai/ha and outd.
Download or read book Predicting Herbicide Dissipation in Container Nursery Crop Production written by Caren Ann Judge and published by . This book was released on 2001 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: container substrates, herbicide dissipation, trifluralin, isoxaben, oryzalin.
Download or read book Journal of Environmental Horticulture written by and published by . This book was released on 2004 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Summit on Strategies to Manage Herbicide Resistant Weeds written by National Research Council and published by National Academies Press. This book was released on 2012-10-22 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preserving the efficacy of herbicides and of herbicide-resistance technology depends on awareness of the increasing resistance of weeds to herbicides used in agriculture and coordinated action to address the problem by individuals at the farm level and beyond. This summit served as a venue to bring the attention of important stakeholders to the issue and as an opportunity for experts from diverse disciplines to strategize in a coordinated way to address herbicide-resistant weeds. In convening stakeholders for this event, participants took a step toward a recommendation from the 2010 National Research Council report The Impact of Genetically Engineered Crops on Farm Sustainability in the United States that federal and state government agencies, private-sector technology developers, universities, farmer organizations, and other relevant stakeholders collaborate to document emerging weed-resistance problems and to develop cost-effective resistance-management programs and practices that preserve effective weed control. The summit provided the opportunity for stakeholders to explore the scientific basis of the emergence of herbicide resistance and to consider different perspectives on both opportunities and barriers to overcoming the problem of herbicide-resistant weeds. National Summit on Strategies to Manage Herbicide-Resistant Weeds contains a brief synopsis of key points made by each speaker at the summit.
Download or read book Various Weed Control Techniques in Container Nursery Production written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of Herbicides on Container Grown Nursery Stock written by Thomas Alvin Fretz and published by . This book was released on 1972 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbicide Combinations For Control of Preemergent Weeds in Container Grown Nursery Stock written by Thomas Alvin Fretz and published by . This book was released on 1973 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reducing Herbicide Residues from Agricultural Runoff and Seepage Water written by George F. Antonious and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Herbicide use while being of a great benefit in controlling weeds in agricultural systems can also pose a threat to environmental quality due to off-target and off-site impacts. The increasing concern about risks associated with agricultural chemicals and specifically their impact on surface and groundwater quality is a national and international concern. In Kentucky, herbicide off-site movement occurs, allowing them to enter the Kentucky River watershed and impact surface and groundwater quality. Accordingly, it is necessary to assess the distribution and degradation/dissipation of herbicides in agricultural soils and runoff water after field application and develop management practices and/or remediation techniques to mitigate environmental pollution by agrochemicals. The overall goal of the best management practices is to develop sustainable agricultural techniques that strike an acceptable balance between crop production benefits and ecological conservation by reducing herbicide impact on environmental quality to 1) protect watersheds by reducing the mobility of herbicides from soil into runoff and seepage water using binding agents; 2) enhance soil microbial activity that mineralizes herbicides in soil; and 3) enhance growers' knowledge about bioremediation techniques (soil amendments, biofilters, biochar, and soil microorganisms) that could be implemented to reduce herbicide mobility and protect natural water resources.
Download or read book Residual Herbicide Dissipation in Vegetable Production written by Timothy Grey and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed and Crop Resistance to Herbicides written by Rafael de Prado and published by Springer Science & Business Media. This book was released on 1997-05-31 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, repeated use of herbicides in the same field has imposed selection for resistance in species that were formerly susceptible. On the other hand, considerable research in the private and public sectors has been directed towards introducing herbicide tolerance into susceptible crop species. The evolution of herbicide resistance, understanding its mechanisms, characterisation of resistant weed biotypes, development of herbicide-tolerant crops and management of resistant weeds are described throughout the 36 chapters of this book. It has been written by leading researchers based on the contributions made at the International Symposium on Weed and Crop Resistance to Herbicides held at Córdoba, Spain. This book will be a good reference source for research scientists and advanced students.
Download or read book 2017 Southeastern U S Pest Control Guide for Nursery Crops and Landscape Plantings written by Joseph C. Neal and published by NC State Extension. This book was released on 2017-04-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This pest control guide is a project of the Southern Nursery IPM Working Group (SNIPM) and collaborators. Featuring 25 tables and 14 graphs, this guide provides up to date information about pest control products used in nursery crops and ornamental landscape plantings in the southeast. It is a quality resource on its own or as a supplement to more comprehensive integrated pest management (IPM) manuals for trees and shrubs. This publication and more comprehensive IPM manuals are available in free downloadable PDF versions from the SNIPM web site at https: //wiki.bugwood.org/SNIPM.
Download or read book Good Agricultural Practices for Greenhouse Vegetable Crops written by and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2013 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication capitalizes on the experience of scientists from the North Africa and Near East countries, in collaboration with experts from around the world, specialized in the different aspects of greenhouse crop production. It provides a comprehensive description and assessment of the greenhouse production practices in use in Mediterranean climate areas that have helped diversify vegetable production and increase productivity. The publication is also meant to be used as a reference and tool for trainers and growers as well as other actors in the greenhouse vegetables value chain in this region.
Download or read book Livestock s Long Shadow written by Henning Steinfeld and published by Food & Agriculture Org.. This book was released on 2006 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The assessment builds on the work of the Livestock, Environment and Development (LEAD) Initiative"--Pref.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1993 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Allelopathy written by Zahid A. Cheema and published by Springer Science & Business Media. This book was released on 2012-09-17 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Allelopathy is an ecological phenomenon by which plants release organic chemicals (allelochemicals) into the environment influencing the growth and survival of other organisms. In this book, leading scientists in the field synthesize latest developments in allelopathy research with a special emphasis on its application in sustainable agriculture. The following topics are highlighted: Ecological implications, such as the role of allelopathy during the invasion of alien plant species; regional experiences with the application of allelopathy in agricultural systems and pest management; the use of microscopy for modeling allelopathy; allelopathy and abiotic stress tolerance; host allelopathy and arbuscular mycorrhizal fungi; allelopathic interaction with plant nutrition; and the molecular mechanisms of allelopathy. This book is an invaluable source of information for scientists, teachers and advanced students in the fields of plant physiology, agriculture, ecology, environmental sciences, and molecular biology.
Download or read book Weed Science written by Thomas J. Monaco and published by John Wiley & Sons. This book was released on 2002-05-23 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: The updated edition of the classic, fundamental book on weedscience Weed Science provides a detailed examination ofthe principles of integrated weed management with important detailson how chemical herbicides work and should be used. This revisedFourth Edition addresses recent developments affecting weedscience. These include the increased use of conservation-tillagesystems, environmental concerns about the runoff of agrochemicals,soil conservation, crop biotechnology, resistance of weeds andcrops to herbicides, weed control in nonagricultural settings andconcerns regarding invasive plants, wetland restoration, and theneed for a vastly improved understanding of weed ecology. Current management practices are covered along with guidance forselecting herbicides and using them effectively. To serve as a moreefficient reference, herbicides are cross-listed by chemical andbrand name and grouped by mechanism of action and physiologicaleffect rather than chemical structure. In addition, an introductionto organic chemistry has been added to familiarize readers withorganic herbicides. Also included are guidelines on weed-controlpractices for specific crops or situations, such as small grains,row crops, horticultural crops, lawns and turf, range land, brush,and aquatic plant life. Generously supplemented with 300 drawings, photographs, andtables, Weed Science is an essential book for students taking anintroductory course in weed science, as well as a reference foragricultural advisors, county agents, extension specialists, andprofessionals throughout the agrochemical industry.
Download or read book To Spray Or Not to Spray written by and published by . This book was released on 1995 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
