Mechanics And Related Processes In Structured Agricultural Soils
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Mechanics And Related Processes In Structured Agricultural Soils
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Author : W.E. Larson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Mechanics And Related Processes In Structured Agricultural Soils written by W.E. Larson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Agricultural soils are subjected to many applied mechanical stresses that influence their behavior. Stresses arise from tillage machines, seeders and chemicals applicators, tractors, and equipment for harvest and transport. Applied stresses may compact or loosen the bulk soil. Micro sections of soil (aggregates or clods) may be compacted during tillage while the bulk soil is loosened. Because most granular soils are combined into structural units of varying sizes with different strengths and properties, prediction of the effect of stresses on the behavior of bulk soils is difficult. The basic strength properties of soil are determined by many fac tors: the size distribution of particles, chemical and mineralogical properties of inorganic clay fraction, the organic matter content and composition, the water content and the stress history. These factors combine and interact to produce many possible behavior patterns. Changes in structure of the soil from applied stresses and biologi cal reactions may profoundly influence storage and transmission of water, heat, and air, and the mechanical resistance to penetration by plant roots. They may also affect the traction of vehicles. Manipulation of structural properties of soils by tillage implements is a major cost under most crop production systems. Reduced energy use is also a significant conservation objective. Improved management systems are very dependent upon a better understanding of soils' response to applied stresses. The content of this book resulted from a NATO Advanced Research Workshop held in St. Paul, Minnesota, U.S.A. September 13-16, 1988.
Proceedings Of The International Soil Correlation Meeting Iscom
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Author :
language : en
Publisher:
Release Date : 1989
Proceedings Of The International Soil Correlation Meeting Iscom written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Soils categories.
Remote Sensing Of Geomorphology
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Author :
language : en
Publisher: Elsevier
Release Date : 2020-04-20
Remote Sensing Of Geomorphology written by and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-20 with Science categories.
Remote Sensing of Geomorphology, Volume 23, discusses the new range of remote-sensing techniques (lidar, structure from motion photogrammetry, advanced satellite platforms) that has led to a dramatic increase in terrain information, and as such provided new opportunities for a better understanding of surface morphology and related Earth surface processes. As several papers have been published (including paper reviews and special issues) on this topic, this book summarizes the major advances in remote sensing techniques for the analysis of Earth surface morphology and processes, also highlighting future challenges. Useful for MSc and PhD students, this book is also ideal for any scientists that want to have a single volume guideline to help them develop new ideas. In addition, technicians and private and public sectors working on remote sensing will find the information useful to their initiatives.
Advances In Soil Science
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Author :
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Advances In Soil Science written by and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Soil is formed from the physical and chemical weathering of rocks-processes described historically becau'se they involve eons of time-by glaciation and by wind and water transport of soil materials, which are later deposited in deltas and loessial planes. Soil undergoes further transformations over time and provides a habitat for biological life and a base for the development of civilizations. Soil is dynamic-always changing as a result of the forces of nature and particularly by the influences of man. Soil has been studied as long as history has been documented. Numerous references to soil are found in historical writings such as Aristotle (384-322 Be), Theophrastus (372-286 Be), Cato the E1der (234-149 Be), and Varro (116-27 Be). Some of the earliest historical references have to do with the erosional forces of wind and water. The study of soils today has taken on increased importance because a rapidly expanding population is placing demands never before experienced on the soil. This has led to an increase in land degradation. Land degradation is one of the most severe problems facing mankind. Volume 11 of Advances in Soil Science was devoted entirely to this critical area of soil science. This series, Advances in Soil Science, was established to provide a forum for leading scientists to analyze and summarize the available scientific information on a subject, assessing its importance and identifying additional research needs.
Bulletin
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Author : International Society of Soil Science
language : en
Publisher:
Release Date : 1989
Bulletin written by International Society of Soil Science and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Soils categories.
Handbook Of Research On Principles And Practices For Orchards Management
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Author : Abobatta, Waleed Fouad
language : en
Publisher: IGI Global
Release Date : 2022-06-03
Handbook Of Research On Principles And Practices For Orchards Management written by Abobatta, Waleed Fouad and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-03 with Science categories.
As orchards are faced with different challenges such as production and the growing global population, there is a need to update and understand the principles and practices for successful orchard management to increase food productivity. The economics of cultivation, irrigated agriculture, and smart agriculture are important topics in precision agriculture that relate to these various challenges and must be studied further. Additionally, technologies have played a key role in promoting the development of orchards and new strategies have led to substantial improvements in fruit productivity and quality. These strategies and technologies must also be considered in order to ensure a successful future for orchard management. The Handbook of Research on Principles and Practices for Orchards Management aims to improve fruit orchards' productivity by exploring the latest practical research findings in the area and considers the new techniques in various agricultural management practices to improve the growth and productivity of fruit orchards under different biotic and abiotic stresses. Covering topics such as nutrient management, pest control, orchard pruning, and magnetic water, this reference work is ideal for industry professionals, researchers, practitioners, scholars, academicians, instructors, and students.
Rhizosphere Dynamics
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Author : Luther Hammond
language : en
Publisher: CRC Press
Release Date : 2019-06-04
Rhizosphere Dynamics written by Luther Hammond and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-04 with Science categories.
The AAAS Selected Symposia Series was begun in 1977 to provide a means of more permanently recording and more widely disseminating some of the valuable material which is discussed at the AAAS Annual National Meetings. The volumes in the Series are based on symposia held at theMeetings which address topics of current and continuing significance, both within and among the sciences, and in the areas in which science and technology have an impact on public policy. The Series format is designed to provide for rapid dissemination of information, so the papers are reproduced directly from camera-ready copy. The papers are organized and edited by the symposium arrangers who then become the editors of the various volumes. Most papers published in the Series are original contributions which have not been previously published, although in some cases additional papers from other sources have been added by an editor to provide a more comprehensive view of a particular topic. Symposia may be reports of new research or reviews of established work, particularly work of an interdisciplinary nature, since the AAAS Annual Meetings typically embrace the full range of the sciences and their societal implications.
Soil Compaction In Crop Production
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Author : B.D. Soane
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Soil Compaction In Crop Production written by B.D. Soane and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
This book provides a global review of the mechanisms, incidence and control measures related to the problems of soil compaction in agriculture, forestry and other cropping systems. Among the disciplines which relate to this subject are soil physics, soil mechanics, vehicle mechanics, agricultural engineering, plant physiology, agronomy, pedology, climatology and economics.The volume will be of great value to soil scientists, agricultural engineers, and all those involved with irrigation, drainage and tillage. It will help to facilitate the exchange of information on current work throughout the world, as well as to promote scientific understanding and stimulate the development, evaluation and adoption of practical solutions to these widespread and urgent problems.
Soil Structure
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Author : Bobby A. Stewart
language : en
Publisher: CRC Press
Release Date : 1995-06-13
Soil Structure written by Bobby A. Stewart and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-06-13 with Technology & Engineering categories.
Soil Structure offers a multidisciplinary approach to the study of soil structure and its relevance to wide ranging investigations in environmental sciences. Topics covered in Soil Structure include soil structure determination, soil fabric genesis and functions, strength and stress distribution, fabric changes in plastic clays, the effects of organic matter and earthworms, air slaking, and hydraulic conductivity changes. The book also discusses litter decomposition and matter transport, the characterization of pore organization, monitoring via a neutron activated tracer, various influences on growth and phosphorus supply of plants and on water uptake by plants, the effects of acidification, and much more. Improved procedures for measuring and calculating the unsaturated hydraulic conductivity of structured soils are also given.
Changing Precipitation Regimes And Terrestrial Ecosystems
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Author : Jake F. Weltzin
language : en
Publisher: University of Arizona Press
Release Date : 2003-01-01
Changing Precipitation Regimes And Terrestrial Ecosystems written by Jake F. Weltzin and has been published by University of Arizona Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-01-01 with Science categories.
By the beginning of the twenty-first century, few people could deny the reality of global change. But while most alarm has been over increasing temperatures, other changes are occurring in precipitation patternsÑvariations that may be due in part to global warming but also to factors such as changes in atmospheric circulation and land surfaces. This volume provides a central source of information about this newly emerging area of global change research. It presents ongoing investigations into the responses of plant communities and ecosystems to the experimental manipulation of precipitation in a variety of field settingsÑparticularly in the western and central United States, where precipitation is already scarce or variable. By exploring methods that can be used to predict responses of ecosystems to changes in precipitation regimes, it demonstrates new approaches to global change research and highlights the importance of precipitation regimes in structuring ecosystems. The contributors first document the importance of precipitation, soil characteristics, and soil moisture to plant life. They then focus on the roles of precipitation amount, seasonality, and frequency in shaping varied terrestrial ecosystems: desert, sagebrush steppe, oak savanna, tall- and mixed-grass prairie, and eastern deciduous forest. These case studies illustrate many complex, tightly woven, interactive relationships among precipitation, soils, and plantsÑrelationships that will dictate the responses of ecosystems to changes in precipitation regimes. The approaches utilized in these chapters include spatial comparisons of vegetation structure and function across different ecosytems; analyses of changes in plant architecture and physiology in response to temporal variation in precipitation; experiments to manipulate water availability; and modeling approaches that characterize the relationships between climate variables and vegetation types. All seek to assess vegetation responses to major shifts in climate that appear to be occurring at present and may become the norm in the future. As the first volume to discuss and document current and cutting-edge concepts and approaches to research into changing precipitation regimes and terrestrial ecosystems, this book shows the importance of developing reliable predictions of the precipitation changes that may occur with global warming. These studies clearly demonstrate that patterns of environmental variation and the nature of vegetation responses are complex phenomena that are only beginning to be understood, and that these experimental approaches are critical for our understanding of future change.