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Xylem Transport Models Optimize Effectiveness Of Systemic Insecticide Applications For Controlling Hemlock Woolly Adelgid Adelges Tsugae
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Book Synopsis Xylem Transport Models Optimize Effectiveness of Systemic Insecticide Applications for Controlling Hemlock Woolly Adelgid (Adelges Tsugae) by : Chelcy R. Ford
Download or read book Xylem Transport Models Optimize Effectiveness of Systemic Insecticide Applications for Controlling Hemlock Woolly Adelgid (Adelges Tsugae) written by Chelcy R. Ford and published by . This book was released on 2010 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hemlock woolly adelgid (HWA, Adelges tsugae Annand) is causing widespread decline and mortality of eastern hemlock trees (Tsuga canadensis (L.) Carr.). Stem injection of insecticide is widely used as a control measure, but its effectiveness depends on individual tree hydraulic characteristics. Recent work has shown that eastern hemlock daily water use is exponentially related to tree diameter, with smaller-diameter trees using significantly less water than largerdiameter trees. In this study we modeled daily water use for 20 eastern hemlock trees across a range of diameters. Based on expected daily water use and, thus, potential xylem transport of insecticide, we applied a dosage estimated to achieve a lethal and uniform xylem sap concentration of imidacloprid to half the trees (xylem transport treatment), and treated the remaining half based on the manufacturerrecommended dosage (MFR treatment), which is a linear function of tree diameter. At 4 and 56 weeks after treatment, we assessed all trees for the presence or absence of new shoot growth and live HWA population density. We found that both treatment dosages significantly reduced live HWA populations; however, 4 weeks after treatment, live HWA population density was 32 percent lower (LSMEANS) on xylem transport treatment trees compared with MFR treatment trees (treatment by time interaction, P = 0.006). Both treatment dosages also significantly increased the proportion of new shoot growth; however, over time xylem transport treatment trees had a significantly greater increase in new shoot production compared with MFR treatment trees. We conclude that dosages based on a xylem transport model not only significantly improved tree health more than the trees receiving the current recommended dosage, but also caused greater reductions in the live HWA population. Improving treatment dosages would reduce treatment cost, nontargeted effects, and would allow land managers to treat a greater number of trees.
Book Synopsis Forest Pathology and Plant Health by : Matteo Garbelotto
Download or read book Forest Pathology and Plant Health written by Matteo Garbelotto and published by MDPI. This book was released on 2018-04-13 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Forest Pathology and Plant Health" that was published in Forests
Book Synopsis Eastern Hemlock Forests by : Jeffrey S. Ward
Download or read book Eastern Hemlock Forests written by Jeffrey S. Ward and published by . This book was released on 2004 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Invasive Species in Forests and Rangelands of the United States by : Therese M. Poland
Download or read book Invasive Species in Forests and Rangelands of the United States written by Therese M. Poland and published by Springer Nature. This book was released on 2021-02-01 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Download or read book Southern Forest Science written by and published by . This book was released on 2004 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Southern forests provide innumerable benefits. Forest scientists, managers, owners, and users have in common the desire to improve the condition of these forests and the ecosystems they support. A first step is to understand the contributions science has made and continues to make to the care and management of forests. This book represents a celebration of past accomplishments, summarizes the current state of knowledge, and creates a vision for the future of southern forestry research and management. Chapters are organized into seven sections: "Looking Back," "Productivity," "Forest Health," "Water and Soils," "Socioeconomic," "Biodiversity," and "Climate Change." Each section is preceded by a brief introductory chapter. Authors were encouraged to focus on the most important aspects of their topics; citations are included to guide readers to further information."
Book Synopsis Plant Diseases by : Snježana Topolovec-Pintaric
Download or read book Plant Diseases written by Snježana Topolovec-Pintaric and published by BoD – Books on Demand. This book was released on 2020-04-15 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant pathogens, the causal agent of infectious plant diseases, influence our lives more than just as an economic impact through yield lost. The study of plant pathogens has given rise to the development of new sciences, new technologies for plant breeding, and the agrochemical industry for pesticide developments. Yet, all our actions and efforts to suppress or eradicate them constantly pressures these various organisms to evolve and adapt for survival. Therefore today, when facing climate changes, accelerated transport of plants and plant products, and world population growth, we have to ask quo vadis phytopathology. Like Alice in Wonderland “If we wish to go anywhere we must run twice as fast as that” so we need to constantly broaden our knowledge. However, today’s literature abounds with knowledge about plant pathogens. Hence, this book intends to present to the reader all the latest material and knowledge about plant pathogens, changes or refinements in plant disease epidemiology, and new approaches and materials used for plant pathogen control. Hopefully, this book will be of interest to those working within the field and looking for an up-to-date introduction. We hope it also interests students and thereby, will influence the future development of phytopathology and our better coexistence with plant pathogens.
Book Synopsis Insect Life History Patterns by : Robert F. Denno
Download or read book Insect Life History Patterns written by Robert F. Denno and published by . This book was released on 1981 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hemlock written by Anthony D'Amato and published by Yale University Press. This book was released on 2014-04-29 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: An appreciation of the beautiful, iconic, and endangered Eastern Hemlock and what it means to nature and society The Eastern Hemlock, massive and majestic, has played a unique role in structuring northeastern forest environments, from Nova Scotia to Wisconsin and through the Appalachian Mountains to North Carolina, Tennessee, and Alabama. A “foundation species” influencing all the species in the ecosystem surrounding it, this iconic North American tree has long inspired poets and artists as well as naturalists and scientists. Five thousand years ago, the hemlock collapsed as a result of abrupt global climate change. Now this iconic tree faces extinction once again because of an invasive insect, the hemlock woolly adelgid. Drawing from a century of studies at Harvard University’s Harvard Forest, one of the most well-regarded long-term ecological research programs in North America, the authors explore what hemlock’s modern decline can tell us about the challenges facing nature and society in an era of habitat changes and fragmentation, as well as global change.
Book Synopsis A Contribution Toward a Monograph of the Adelginae (Phylloxeridae) of North America by : Percy Nicol Annand
Download or read book A Contribution Toward a Monograph of the Adelginae (Phylloxeridae) of North America written by Percy Nicol Annand and published by Stanford University Press. This book was released on 1983 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mycorrhizal Biotechnology by : Devarajan Thangadurai
Download or read book Mycorrhizal Biotechnology written by Devarajan Thangadurai and published by CRC Press. This book was released on 2010-06-16 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several studies have demonstrated that mycorrhizal associations play vital role in plant nutrition. They greatly increase the efficiency of nutrient and water uptake, enhance resistance to pathogens, and buffer plant species against several environmental stresses and drought resistance. Mycorrhizae also improve plant growth and survival in soils co
Download or read book Plant Metabolism written by Ganesh Sriram and published by . This book was released on 2014 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Plant Metabolism: Methods and Protocols, expert researchers in the field present the latest methods on quantitative analysis of plant metabolism. The methods focus on measurements, analyses and simulations of molecules, fluxes, and ultimately entire metabolic pathways and networks. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials, reagents, or software, step-by-step, readily reproducible laboratory protocols, and key tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, Plant Metabolism: Methods and Protocols seeks to benefit scientists ranging from plant biology, metabolic engineering, and biotechnology.
Download or read book Ecological Systems written by Rik Leemans and published by Springer Science & Business Media. This book was released on 2012-12-12 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth is home to an estimated 8 million animal species, 600,000 fungi, 300,000 plants, and an undetermined number of microbial species. Of these animal, fungal, and plant species, an estimated 75% have yet to be identified. Moreover, the interactions between these species and their physical environment are known to an even lesser degree. At the same time, the earth’s biota faces the prospect of climate change, which may manifest slowly or extremely rapidly, as well as a human population set to grow by two billion by 2045 from the current seven billion. Given these major ecological changes, we cannot wait for a complete biota data set before assessing, planning, and acting to preserve the ecological balance of the earth. This book provides comprehensive coverage of the scientific and engineering basis of the systems ecology of the earth in 15 detailed, peer-reviewed entries written for a broad audience of undergraduate and graduate students as well as practicing professionals in government, academia, and industry. The methodology presented aims at identifying key interactions and environmental effects, and enabling a systems-level understanding even with our present state of factual knowledge.
Book Synopsis The Systemic Insecticides by : Hendrik Tennekes
Download or read book The Systemic Insecticides written by Hendrik Tennekes and published by . This book was released on 2010* with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Catskill Forest by : Michael Kudish
Download or read book The Catskill Forest written by Michael Kudish and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Roadside Geology of Connecticut and Rhode Island by : James William Skehan
Download or read book Roadside Geology of Connecticut and Rhode Island written by James William Skehan and published by Roadside Geology. This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The small chunk of North America enclosed within the state boundaries of Connecticut and Rhode Island includes parts of at least six former continents, microcontinents, and volcanic island chains, each with its own geologic history. Roadside Geology of Connecticut and Rhode Island introduces readers to the sequence of mountain-building collisions that welded the pieces of land together and to the subsequent upwelling of magma that nearly broke them apart again. Twenty road guides, complete with maps, photographs, and diagrams, locate and interpret the rocks and landforms visible from the state's highways and at nearby parks and historic sites. Readers will discover stretched pebbles at Purgatory Chasm, folded marble at Kent Falls State Park, Eubrontes footprints at Dinosaur State Park, and glacial moraines protruding from the waters of Long Island and Block Island Sounds.
Book Synopsis Mono- and Di-Potassium Salts of Phosphorous Acid by : Canada. Pest Management Regulatory Agency
Download or read book Mono- and Di-Potassium Salts of Phosphorous Acid written by Canada. Pest Management Regulatory Agency and published by . This book was released on 2010 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Health Canada's Pest Management Regulatory Agency (PMRA) has granted conditional registration for the sale and use of Mono- and Di-Potassium Salts of Phosphorous Acid and Confine containing the technical grade active ingredient mono- and di-potassium salts of phosphorous acid for suppression of late blight and pink rot on harvested potato tubers. This report summarizes the information that was evaluated and provides the results of the evaluation as well as the reasons for the registration decision, with an outline of the additional scientific information required from the applicant. It also describes the conditions of registration that the applicant must meet to ensure that the health and environmental risks as well as the value of these pest control products are acceptable for their intended use. The Overview describes the key points of the evaluation, while the Science Evaluation section provides detailed technical information on the human health, environmental and value assessments of Mono- and Di-Potassium Salts of Phosphorous Acid and Confine.--Document.
