Fehedta

Author : Y. Chen,Y. Hadar
Publisher : Springer Science & Business Media
Page : 363 pages
File Size : 51,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401132947

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Iron Nutrition and Interactions in Plants by Y. Chen,Y. Hadar Pdf

Many agricultural crops worldwide, especially in semi-arid climates, suffer from iron deficiencies. Among plants sensitive to iron deficiency are apples, avocado, bananas, barley, beans, citrus, cotton, grapes, peanuts, pecans, potatoes, sorghum, soybeans, and numerous ornamental plants. Deficiencies are usually recognized by chlorotic, in new leaves and are typically found among sensitive crops grown in calcareous or yellowed, interveinal areas soils which cover over 30% of the earth's land surface. Iron deficiency may lead, in extreme cases, to complete crop failure. In intensive agriculture on calcareous soils, iron often becomes a major limiting nutrient for optimal crop production, thus, correction of iron deficiency is required. Various chemicals and practices are available. They are, however, costly and do not always result in a complete remedy of the deficiency. Crucial questions relative to the cost-benefit equation such as the recovery rate of plants and the long-term fertilizing effect have not yet been resolved. The complexity of iron nutrition problems requires an understanding of the chemistry of iron oxides in soils, of the chemistry of both natural and synthetic chelates, of rhizosphere microbiology and biochemistry, and of the physiological involvement of the plant in iron uptake and transport.

Author : Gour-Tsyh (George) Yeh
Publisher : Springer Science & Business Media
Page : 318 pages
File Size : 43,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461543718

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Computational Subsurface Hydrology by Gour-Tsyh (George) Yeh Pdf

Any numerical subsurface model is comprised of three components: a theoretical basis to translate our understanding phenomena into partial differential equations and boundary conditions, a numerical method to approximate these governing equations and implement the boundary conditions, and a computer implementation to generate a generic code for research as well as for practical applications. Computational Subsurface Hydrology: Reactions, Transport, and Fate is organized around these themes. The fundamental processes occurring in subsurface media are rigorously integrated into governing equations using the Reynolds transport theorem and interactions of these processes with the surrounding media are sophisticatedly cast into various types of boundary conditions using physical reasoning. A variety of numerical methods to deal with reactive chemical transport are covered in Computational Subsurface Hydrology: Reactions, Transport, and Fate with a particular emphasis on the adaptive local grid refinement and peak capture using the Lagrangian-Eulerian approach. The topics on coupled fluid flows and reactive chemical transport are unique contributions of this book. They serve as a reference for research as well as for practical applications with a computer code that can be purchased from the author. Four computer codes to simulate vertically integrated horizontal solute transport (LEMA), contaminant transport in moving phreatic aquifers in three dimensions (3DLEMA), solute transport in variably saturated flows in two dimensions (LEWASTE), and solute transport under variably saturated flows in three dimensions (3DLEWASTE) are covered. These four computer codes are designed for generic applications to both research and practical problems. They could be used to simulate most of the practical, real-world field problems. Reactive chemical transport and its coupling with fluid flows are unique features in this book. Theories, numerical implementations, and example problems of coupled reactive transport and flows in variably saturated media are presented. A generic computer code, HYDROGEOCHEM 3.0, is developed. A total of eight example problems are used to illustrate the application of the computational model. These problems are intended to serve as examples for setting up a variety of simulations that one may encounter in research and field-site applications. Computational Subsurface Hydrology: Reactions, Transport, and Fate offers practicing engineers and scientists a theoretical background, numerical methods, and computer codes for modeling contaminant transport in subsurface media. It also serves as a textbook for senior and graduate course on reactive chemical transport in subsurface media in disciplines such as civil and environmental engineering, agricultural engineering, geosciences, soil sciences, and chemical engineering. Computational Subsurface Hydrology: Reactions, Transport, and Fate presents a systematic derivation of governing equations and boundary conditions of subsurface contaminant transport as well as reaction-based geochemical and biochemical processes. It discusses a variety of numerical methods for moving sharp-front problems, expounds detail procedures of constructing Lagrangian-Eulerian finite element methods, and describes precise implementation of computer codes as they are applied to subsurface contaminant transport and biogeochemical reactions.

Author : Canada. Pest Management Regulatory Agency
Publisher : Unknown
Page : 45 pages
File Size : 40,8 Mb
Release : 2010
Category : Herbicides
ISBN : 1100146601

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FeHEDTA by Canada. Pest Management Regulatory Agency Pdf

Health Canada's Pest Management Regulatory Agency (PMRA), under the authority of the Pest Control Products Act and Regulations, is proposing full registration for the sale and use of NEU1173H TGAI and the end-use products; NEU1173H RTU with Pull'N Spray Applicator, NEU1173H RTU with Quick Connect Sprayer, NEU1173H RTU, Fiesta Lawn Weed Killer Ready to Spray, Fiesta Lawn Weed Killer, NEU1173H Ready to Spray Large Size, NEU1173H Ready to Spray, NEU1173H Large Size, and NEU1173H, containing the technical grade active ingredient iron present as FeHEDTA (herein referred to as FeHEDTA), to control several broadleaved weed species that commonly occur in turf. This document summarizes PMRA's evaluation. The Overview describes the key points of the evaluation, while the Science Evaluation provides detailed technical information on the human health, environmental and value assessments of NEU1173H TGAI and the end-use products. Before making a final registration decision on FeHEDTA, the PMRA will consider all comments received from the public in response to this consultation document.--Includes text from document.

Author : Kevin S. Verley
Publisher : Nova Publishers
Page : 356 pages
File Size : 44,6 Mb
Release : 2008
Category : Science
ISBN : 1604560479

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Coordination Chemistry Research Progress by Kevin S. Verley Pdf

Coordination chemistry is the study of compounds formed between metal ions and other neutral or negatively charged molecules. Coordination chemistry includes areas of inorganic solid state chemistry, organometallic chemistry and bioinorganic chemistry, as well as applications to analytical chemistry, catalysis, industrial chemistry and materials science.

Author : Tadao Ando,Kounosuke Fujita,Tadahiko Mae,Hideaki Matsumoto,Satoshi Mori,Jiro Sekiya
Publisher : Springer Science & Business Media
Page : 975 pages
File Size : 42,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400900479

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Plant Nutrition for Sustainable Food Production and Environment by Tadao Ando,Kounosuke Fujita,Tadahiko Mae,Hideaki Matsumoto,Satoshi Mori,Jiro Sekiya Pdf

In the history of the International Plant Nutrition Colloquium from its first meeting in 1954, this meeting, the 13th Colloquium, is the first to be held in Asia and will be the last in the 20th century. The 20th century has seen huge changes in the number and activities of mankind. Our population has increased from around 1. 7 billion to more than 5. 8 billion and technological innovations have completely altered our way of living. As a consequence of such rapid change, we are facing many problems including changes in our environment of a global scale. But, while food shortage has been a serious concern to mankind throughout our history, serious food shortages in the 20th century have been confined to limited times and areas. As Lester Brown discusses in this volume, farmers have increased food production heroically on demand. We, the plant nutritionists should be proud of our support to the world's farmers which has helped them make their achievement possible. During the 20th century, the science of plant nutrition also has achieved great progress as described by Jack Loneragan; it became established as a discipline firmly based in science, defined the chemical elements supporting plant growth, and has contributed to improvements in plant production and environmental quality, as readers will find in many contributions in this volume.

Author : Peter G Mason,David R Gillespie
Publisher : CABI
Page : 544 pages
File Size : 47,9 Mb
Release : 2013-10-21
Category : Technology & Engineering
ISBN : 9781780642574

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Biological Control Programmes in Canada 2001-2012 by Peter G Mason,David R Gillespie Pdf

Canada is a world leader in biological control research. Reporting the status of biocontrol agents released in Canada over the last decade, this book presents case studies by target pest that evaluate the impact of biocontrol and recommend future priorities. In addition to a new chapter on future targets and an appendix listing established agents, this edition contains information of interest to a global audience, and chapters that address effects of invasive species and climate change.

Author : Anonim
Publisher : John Wiley & Sons
Page : 418 pages
File Size : 50,6 Mb
Release : 2009-09-22
Category : Science
ISBN : 9780470132906

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Inorganic Syntheses by Anonim Pdf

The volumes in this continuing series provide a compilation of current techniques and ideas in inorganic synthetic chemistry. Includes inorganic polymer syntheses and preparation of important inorganic solids, syntheses used in the development of pharmacologically active inorganic compounds, small-molecule coordination complexes, and related compounds. Also contains valuable information on transition organometallic compounds including species with metal-metal cluster molecules. All syntheses presented here have been tested.

Author : B F G Johnson
Publisher : Royal Society of Chemistry
Page : 520 pages
File Size : 43,8 Mb
Release : 2007-10-31
Category : Science
ISBN : 9781847556431

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Inorganic Chemistry of the Transition Elements by B F G Johnson Pdf

Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued. The current list of Specialist Periodical Reports can be seen on the inside flap of this volume.

Author : James R. Kramer,Herbert Ellis Allen
Publisher : CRC Press
Page : 384 pages
File Size : 51,6 Mb
Release : 1988-09
Category : Science
ISBN : UOM:39015019129827

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Metal Specification Theory Analysis Application by James R. Kramer,Herbert Ellis Allen Pdf

Here is an up-to-date presentation of metal speciation in soils, sediments, and water by specialists in analytical chemistry, environmental engineering, oceanography, nutrition, and soil chemistry. fate and effects-measurements-and modeling-are the major themes in this book, with overviews and examples of the significance of metal speciation to solving environmental problems, and recommendations for additional research areas. This new reference discusses separation methods, extraction techniques; bioavailability as related to humans, plants, and aquatic organisms; applications showing importance of speciation in groundwater; industrial waste treatment systems, marines and lakes, solid-solution interface; fate of organic pollutants; nature of surfaces; binding of metals to oxides and sediments (dissolved and particulate matter); interpretations of reactions in multi-ligand systems.

Author : Anton Raviraj Arulanantham
Publisher : Unknown
Page : 174 pages
File Size : 45,9 Mb
Release : 1988
Category : Electronic
ISBN : UCAL:$C72198

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Studies on the Physiology and Biochemistry of Iron Stress in Beta Vulgaris L by Anton Raviraj Arulanantham Pdf

Author : Anonim
Publisher : Unknown
Page : 636 pages
File Size : 43,7 Mb
Release : 1985
Category : Geothermal engineering
ISBN : STANFORD:36105006178920

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1985 International Symposium on Geothermal Energy by Anonim Pdf

Author : John Manthey,David E. Crowley,Douglas G. Luster
Publisher : CRC Press
Page : 384 pages
File Size : 50,9 Mb
Release : 1994-03-22
Category : Technology & Engineering
ISBN : 0873719425

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Biochemistry of Metal Micronutrients in the Rhizosphere by John Manthey,David E. Crowley,Douglas G. Luster Pdf

Biochemistry of Metal Micronutrients in the Rhizosphere focuses on chemical factors and biological activities that control the uptake and translocation of essential metal micronutrients by plants and microorganisms. Emphasis is placed on current proposals describing the roles of microorganisms in controlling the biological activities of metal micronutrients in the rhizosphere. Coverage includes basic principles of siderophore-mediated Fe acquisition by microorganisms, siderophores as important regulators of Fe availability to plants and rhizosphere microorganisms, and microbial control of metal micronutrient supply to plants. The book evaluates plant uptake processes of Fe, Mn, and Zn in solution cultures and integrates this information with a rapidly developing understanding of rhizosphere events. Important consideration is given to the roles of metal ion chelation and soil chemistry in these biological activities. The current understanding of the biochemical events associated with Fe-deficiency in plants is discussed, including how these activities mediate micronutrient availability to both plants and soil microorganisms. This unique mixture of detailed coverage of the events that control biological activities of Fe, Mn, and Zn in the rhizosphere makes this book an essential reference.

Author : Javier Abadía
Publisher : Springer Science & Business Media
Page : 389 pages
File Size : 48,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401105033

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Iron Nutrition in Soils and Plants by Javier Abadía Pdf

Iron is a major constituent of the earth crust. However, under alkaline conditions commonly found in arid and semi-arid environments iron becomes unavailable to plants. When plants are affected by a shortage of iron their leaves become yellow (chlorotic), and both plant growth and crop yield are reduced. The roots of plants affected by iron deficiency may develop a series of responses directed to improve iron uptake, such as increased proton excretion and iron reduction capabilities or excretion of iron chela tors called siderophores. Iron deficiency affects major crops worldwide, including some of major economic importance such as fruit trees and others. Correction of iron deficiency is usually implemented through costly application of synthetic chelates. Since these correction methods are very expensive, the competitivity of farmers is often reduced and iron deficiency may become a limiting factor for the maintenance, introduction or expansion of some crops. In spite of the many years devoted to the study of iron deficiency, the knowledge of iron deficiency in soils and plants is still fragmentary in many aspects. We have only incomplete information on the processes at the molecular level that make some plant species and cultivars unable to take and utilize iron from the soil, whereas other plants grow satisfactorily under the same conditions.

Author : Carol A. Miles
Publisher : Unknown
Page : 332 pages
File Size : 50,5 Mb
Release : 1993
Category : Electronic
ISBN : CORNELL:31924062830090

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Divergent Selection of Sweet Corn (Zea Mays L. Var. Saccharata) Under Low and Conventional Nitrogen Environments by Carol A. Miles Pdf

Author : Nand Kumar Fageria,Zhenli He,Virupax C. Baligar
Publisher : CRC Press
Page : 360 pages
File Size : 54,5 Mb
Release : 2017-02-17
Category : Science
ISBN : 9781351667173

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Phosphorus Management in Crop Production by Nand Kumar Fageria,Zhenli He,Virupax C. Baligar Pdf

The world population is projected to reach nine billion by 2050, and in the coming years, global food demand is expected to increase by 50% or more. Higher crop productivity gains in the future will have to be achieved in developing countries through better natural resources management and crop improvement. After nitrogen, phosphorus (P) has more widespread influence on both natural and agricultural ecosystems than any other essential plant element. It has been estimated that 5.7 billion hectares of land worldwide contain insufficient amounts of available P for sustainable crop production, and P deficiency in crop plants is a widespread problem in various parts of the world. However, it has been estimated that worldwide minable P could last less than 40 years. For sustaining future food supplies, it is vital to enhance plant P use efficiency. To bring the latest knowledge and research advances in efficient management of P for economically viable and environmentally beneficial crop production in sustainable agriculture, Phosphorus Management in Crop Production contains chapters covering functions and diagnostic techniques for P requirements in crop plants, P use efficiency and interactions with other nutrients in crop plants, management of P for optimal crop production and environmental quality, and basic principles and methodology regarding P nutrition in crop plants. The majority of research data included are derived from many years of field, greenhouse, and lab work, hence the information is practical in nature and will have a significant impact on efficient management of P-fertilizers to enhance P use efficiency, improve crop production, promote sustainable agriculture, and reduce P losses through eluviations, leaching, and erosion to minimize environmental degradation. A comprehensive book that combines practical and applied information, Phosphorus Management in Crop Production is an excellent reference for students, professors, agricultural research scientists, food scientists, agricultural extension specialists, private consultants, fertilizer companies, and government agencies that deal with agricultural and environmental issues.