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Agricultural System Models In Field Research And Technology Transfer

Author: Lajpat R. Ahuja
Publisher: CRC Press
ISBN: 1420032410
Size: 40.20 MB
Format: PDF
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Most books covering the use of computer models in agricultural management systems target only one or two types of models. There are few texts available that cover the subject of systems modeling comprehensively and that deal with various approaches, applications, evaluations, and uses for technology transfer. Agricultural System Models in Field Research and Technology Transfer fills this need. It presents the latest advances in the use of various computer models in agricultural management systems. This authoritative reference provides guidance on the use of models in field research, decision support, precision farming, and technology transfer to farmers and ranchers. Derived from an international symposium co-sponsored by the American Society of Agronomy, the Soil Science Society of America, and the USDA's Agricultural Research Service, it analyzes current system model applications for the modeling of natural resources, crop production, grazing lands, and animal production systems. Leading international agricultural system scientists present their experiences and provide guidance on how models can be used to enhance the quality of field research, transfer of research information and technology to farmers and ranchers, and decision support for agricultural management. They provide an expert review of the existing problems and possible solutions to improve future applications. In addition, Agricultural System Models in Field Research and Technology Transfer explores the possible use of an international modular computer framework to improve current modeling procedures in an effort to develop problem-specific models in the future.

Encyclopedia Of Ecology

Author: Brian D. Fath
Publisher: Elsevier
ISBN: 0444641300
Size: 70.91 MB
Format: PDF, ePub, Mobi
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Encyclopedia of Ecology, Second Edition continues the acclaimed work of the previous edition published in 2008. It covers all scales of biological organization, from organisms, to populations, to communities and ecosystems. Laboratory, field, simulation modelling, and theoretical approaches are presented to show how living systems sustain structure and function in space and time. New areas of focus include micro- and macro scales, molecular and genetic ecology, and global ecology (e.g., climate change, earth transformations, ecosystem services, and the food-water-energy nexus) are included. In addition, new, international experts in ecology contribute on a variety of topics. Offers the most broad-ranging and comprehensive resource available in the field of ecology Provides foundational content and suggests further reading Incorporates the expertise of over 500 outstanding investigators in the field of ecology, including top young scientists with both research and teaching experience Includes multimedia resources, such as an Interactive Map Viewer and links to a CSDMS (Community Surface Dynamics Modeling System), an open-source platform for modelers to share and link models dealing with earth system processes

Quantifying And Understanding Plant Nitrogen Uptake For Systems Modeling

Author: Liwang Ma
Publisher: CRC Press
ISBN: 9781420052978
Size: 75.16 MB
Format: PDF, ePub, Mobi
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Discusses New Advancements to Improve Existing Simulations of Plant Nitrogen Written by research pioneers and leading scientists in the area of agricultural systems, Quantifying and Understanding Plant Nitrogen Uptake for Systems Modeling comprehensively covers plant N uptake in agricultural system models, especially for building soil-plant system models. The text illustrates how to minimize the transportation of nitrogen fertilizers in crop production to surface and ground waters, as even moderate errors in uptake estimations lead to a dramatic increase in the amount of nitrogen leached into groundwater. It also highlights the knowledge gaps preventing correct simulation of this process and explains what to look for when using a system model and interpreting simulation results. Applies to a Variety of Crops, Including Oilseed, Wheat, Potatoes, and Maize Addressing quantification and synthesis in the context of system modeling, this text introduces cutting-edge and original information regarding N uptake not previously offered by other research texts in the field. This, in turn, benefits scientists, professors, system modelers, and model users in interpreting modeling results for enhancing nitrogen management and developing decision support tools. This volume documents, with complex, detailed models, plant N uptake based on absorption kinetics of transporters across the root cell membranes, mass flow, and diffusion to the root surface of single or composite roots. It also provides simpler models used in N uptake simulations at the field and watershed scales. Discusses All Areas of the Complex Process In addition to the important processes of nitrogen translocation, remobilization, and grain protein formation, the book documents various philosophies, mechanisms, and scales in simulating plant N uptake in agricultural system models, while providing an extensive review of the uptake of dissolved organic nitrogen by plants in ecosystems. .

Utilisation Of Grazed Grass In Temperate Animal Systems

Author: John Joseph Murphy
Publisher: Wageningen Academic Pub
ISBN: 9076998760
Size: 35.86 MB
Format: PDF
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Leading authorities from wide geographical regions of the globe will review the most up-to-date information in relation to temperate grasslands. Topics covered are: nutritive value of pasture; plant characteristics conducive to high animal intake and performance; modelling of both grass growth and animal production and intake in grazing systems; optimising financial returns from grazing; decision support systems; optimal animal breeds and traits for grazing systems; challenges and opportunities for animal production in the immediate future .In addition, short papers will present the most recent research on the above mentioned topics. One paper will present a comprehensive overview of animal production from pasture in Ireland This book will be of interest to grassland and ruminant production scientists, mathematical modellers working on grazing systems, extension workers, students of agriculture and animal production and progressive livestock farmers.

Agricultural And Environmental Sustainability

Author: Manjit S. Kang
Publisher: CRC
ISBN:
Size: 34.92 MB
Format: PDF, ePub, Mobi
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Understand sustainable development from economic, ecological, and social perspectivesAs world population continues to increase, the need grows for a safe, sustainable supply of food. Agricultural and Environmental Sustainability: Considerations for the Future provides the latest research results and vital information on the process of producing an enduring food supply that is healthy for consumers and does not harm the environment. Internationally respected experts provide diverse perspectives on the issues and problems in striving for a safe, continuous food supply that is stable for future generations. Researchers and practitioners will gain insight into the current and oncoming challenges in providing food for the hungry around the world. The neglect of environmental factors would inevitably lead to the collapse of both industry and agriculture. Agricultural and Environmental Sustainability: Considerations for the Future focuses on the economic, ecological, and sociological issues that intertwine with efforts for effective agricultural sustainability in the coming years. This crucial look to the future provides a clear view of what needs to be done in long-term land use to ensure sustainability of resources, economic viability, and environmental preservation. This important resource is well-referenced and has several figures, tables, and graphs to clearly illustrate ideas.Topics in Agricultural and Environmental Sustainability: Considerations for the Future include: sustainability of agriculture issues, such as economic returns, environmental preservation, and enhancing quality of life opportunities for alleviating poverty and stopping land degradation through agroforestry management principles to improve and restore soil whole-system modeling approach to work for sustainable agricultural systems global wheat mega-environments and sustainability enhancing the productivity and sustainability of the rice-wheat cropping system overcoming the use of the outmoded plow holistic model systems to help farm families become more food secure the economic impact of bacterial wilt and drought stresses in banana production the sale of environmentally friendly products in developed countriesAgricultural and Environmental Sustainability: Considerations for the Future is an essential resource for crop breeders, geneticists, agronomists and horticulturists, educators, and students and belongs in every agricultural university library.

The Farmer S Decision

Author: Jerry L. Hatfield
Publisher:
ISBN:
Size: 74.45 MB
Format: PDF, ePub, Docs
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Decision making to achieve a balance between the economic goals of producers and environmental quality benefits is complex. Most of the time we consider that the balance is skewed to one side or the other and that there are winners and losers. From the production perspective, the loser is the economic return in exchange for environmental quality while from the environmental perspective, the loser is the environment at the expense of agricultural production and increased inputs. In reality, there are opportunities within agriculture for a win-win situation; however, to explore the endless possibilities that constitute acceptable solutions is extremely difficult. Over the past few years there has been an increasing development of decision support tools that provide a framework that could be applied to agriculture. As I have worked with producers extensively over the past few years, it has become apparent that we could provide more information to the American producer that would help them evaluate different scenarios in their farming systems and evaluate potential alternatives through a combination of simulation tools and decision support systems. These are easy concepts to suggest, but more difficult to implement. As an effort to expand our understanding of the potential of decision support tools for economic and environmental balance, a proposal was made to the Organisation for Economic Co-operation and Development (OECD) in two theme areas. The outcome yielded an international workshop that assembled an international group of experts in decision support systems, simulation models, and agricultural production through industry, consultants, and producers. This group also addressed enhancing environmental quality in agricultural systems. ---Jerry L. Hatfield from Preface.