Root Zone Water Quality Model

Author : Lajpat Ahuja,K. W. Rojas,J. D. Hanson
Publisher : Water Resources Publication
Page : 388 pages
File Size : 43,7 Mb
Release : 2000
Category : Technology & Engineering
ISBN : 1887201084

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Root Zone Water Quality Model by Lajpat Ahuja,K. W. Rojas,J. D. Hanson Pdf

This publication comes with computer software and presents a comprehensive simulation model designed to predict the hydrologic response, including potential for surface and groundwater contamination, of alternative crop-management systems. It simulates crop development and the movement of water, nutrients and pesticides over and through the root zone for a representative unit area of an agricultural field over multiple years. The model allows simulation of a wide spectrum of management practices and scenarios with special features such as the rapid transport of surface-applied chemicals through macropores to deeper depths and the preferential transport of chemicals within the soil matrix via mobile-immobile zones. The transfer of surface-applied chemicals (pesticides in particular) to runoff water is also an important component.

Author : Anonim
Publisher : Elsevier
Page : 300 pages
File Size : 52,8 Mb
Release : 2000-10-11
Category : Technology & Engineering
ISBN : 0080524346

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Advances in Agronomy by Anonim Pdf

Volume 71 contains six outstanding reviews that discuss cutting edge developments in the crop and soil sciences. Chapter 1 addresses advances in the development, use, and evaluation of controlled release fertilizers. Chapter 2 is a comprehensive review of developments in breeding crops for increased nutritional value. Historical and current advances in the field are covered as well as selection in methodology and employment of molecular biology tools. Chapter 3 is a comprehensive treatment of remaking bean plant architecture for efficient production. Chapter 4 is a review on carbon sequestration, specifically, the potential of world cropland solid to serve as a source of atmospheric carbon. Chapter 5 discusses the ability of grain legumes (pulses) to adapt to water-limited environments. Chapter 6 describes and applies an important water quality model - the root zone water quality model (RZWQM). The model is described and discussion is provided on the calibration and application in laboratory and field settings.

Author : Anonim
Publisher : Unknown
Page : 490 pages
File Size : 49,8 Mb
Release : 1993
Category : Hydrologic models
ISBN : UCR:31210014433583

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Proceedings of the Federal Interagency Workshop on Hydrologic Modeling Demands for the 90's by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 498 pages
File Size : 47,5 Mb
Release : 1993
Category : Hydrology
ISBN : MINN:31951P002977327

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Water-resources Investigations Report by Anonim Pdf

Author : Ole Wendroth,Robert J. Lascano,Liwang Ma
Publisher : John Wiley & Sons
Page : 304 pages
File Size : 48,8 Mb
Release : 2020-01-22
Category : Technology & Engineering
ISBN : 9780891183648

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Bridging Among Disciplines by Synthesizing Soil and Plant Processes by Ole Wendroth,Robert J. Lascano,Liwang Ma Pdf

In the 8th book of Dr. Ahuja’s innovative “Advances in Agricultural Systems Modeling” series, authors give a look into the future of climatesmart agricultural systems, emphasizing the integration of soil, weather, vegetation and management information to predict relevant agro-ecosystem processes. Expansion of data availability, improvement of sensors, and computational power have opened opportunities in modeling and exploration of management impact. Authors give a background on model development and explain soil, plant, and climate processes and their interactions that encompass the wide range of applications of simulation models to address challenges in managing our resources and complex agricultural systems.

Author : Lajpat R. Ahuja,Liwang Ma
Publisher : John Wiley & Sons
Page : 480 pages
File Size : 40,8 Mb
Release : 2020-01-22
Category : Technology & Engineering
ISBN : 9780891181804

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Methods of Introducing System Models into Agricultural Research by Lajpat R. Ahuja,Liwang Ma Pdf

Why model? Agricultural system models enhance and extend field research...to synthesize and examine experiment data and advance our knowledge faster, to extend current research in time to predict best management systems, and to prepare for climate-change effects on agriculture. The relevance of such models depends on their implementation. Methods of Introducing System Models into Agricultural Research is the ultimate handbook for field scientists and other model users in the proper methods of model use. Readers will learn parameter estimation, calibration, validation, and extension of experimental results to other weather conditions, soils, and climates. The proper methods are the key to realizing the great potential benefits of modeling an agricultural system. Experts cover the major models, with the synthesis of knowledge that is the hallmark of the Advances in Agricultural Systems Modeling series.

Author : Wynn R. Walker
Publisher : Unknown
Page : 84 pages
File Size : 46,5 Mb
Release : 1976
Category : Drainage
ISBN : UOM:39015104957298

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Assessment of Irrigation Return Flow Models by Wynn R. Walker Pdf

Author : John Gowing,Luis Santos Pereira
Publisher : CRC Press
Page : 483 pages
File Size : 45,5 Mb
Release : 2003-09-02
Category : Architecture
ISBN : 9781482272086

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Water and the Environment by John Gowing,Luis Santos Pereira Pdf

Water and Environment addresses imbalances between availability and demand, degradation of surface and ground waters, inter-sectorial, inter-regional and international competition in water management. With contributions from internationally distinguished experts at the first Inter-Regional Conference on Environment-Water: Innovative Issues in Irrig

Author : Lajpat R. Ahuja,Liwang Ma,Terry A Howell
Publisher : CRC Press
Page : 374 pages
File Size : 52,7 Mb
Release : 2016-04-19
Category : Science
ISBN : 9781420032413

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Agricultural System Models in Field Research and Technology Transfer by Lajpat R. Ahuja,Liwang Ma,Terry A Howell Pdf

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 Res

Author : Anonim
Publisher : Unknown
Page : 24 pages
File Size : 45,9 Mb
Release : 1997
Category : Agriculture
ISBN : MINN:30000010234684

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Agricultural Research by Anonim Pdf

Author : United States. Congress. House. Committee on Agriculture. Subcommittee on Department Operations, Research, and Foreign Agriculture
Publisher : Unknown
Page : 346 pages
File Size : 53,9 Mb
Release : 1988
Category : Drinking water
ISBN : UOM:39015013232379

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Ground Water Quality by United States. Congress. House. Committee on Agriculture. Subcommittee on Department Operations, Research, and Foreign Agriculture Pdf

Author : American Society of Agricultural Engineers
Publisher : American Society of Agricultural & Biological Engineers
Page : 600 pages
File Size : 45,7 Mb
Release : 1995
Category : Agricultural chemicals
ISBN : STANFORD:36105061706649

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Water Quality Modeling by American Society of Agricultural Engineers Pdf

Author : Lajpat R. Ahuja,Kurt C. Kersebaum,Ole Wendroth
Publisher : John Wiley & Sons
Page : 420 pages
File Size : 51,7 Mb
Release : 2022-08-09
Category : Technology & Engineering
ISBN : 9780891183853

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Modeling Processes and Their Interactions in Cropping Systems by Lajpat R. Ahuja,Kurt C. Kersebaum,Ole Wendroth Pdf

Modeling Processes and Their Interactions in Cropping Systems A complete discussion of soil-plant-climate-management processes In Modeling Processes and Their Interactions in Cropping Systems: Challenges for the 21st Century, a team of distinguished researchers delivers a comprehensive and up-to-date scientific textbook devoted to teaching the modeling of soil-plant-climate-management processes at the upper undergraduate and graduate levels. The book emphasizes the new opportunities and paradigms available to modern lab and field researchers and aims to improve their understanding and quantification of individual processes and their interactions. The book helps readers quantify field research results in terms of the fundamental theory and concepts broadly generalizable beyond specific sites, as well as predict experimental results from knowledge of the fundamental factors that determine the environment and plant growth in different climates. Readers will also discover: An introduction to water and chemical transport in the soil matrix and macropores Explorations of heat transport, water balance, snowpack, and soil freezing Discussions of merging machine learning with APSIM models to improve the evaluation of the impact of climate extremes on wheat yields in Australia Examinations of the quantification and modeling of management effects on soil properties, including discussions of tillage, reconsolidation, crop residues, and crop management The book will be essential reading for anyone interested in the 2030 breakthroughs in agriculture identified by the National Academies of Sciences, Engineering, and Medicine.

Author : Chittaranjan Ray,David McInnes,Matthew Sanderson
Publisher : Routledge
Page : 192 pages
File Size : 44,7 Mb
Release : 2020-06-04
Category : Nature
ISBN : 9781000732047

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Virtual Water by Chittaranjan Ray,David McInnes,Matthew Sanderson Pdf

Virtual Water explores the role of "virtual water" – the water embedded in a product – in ongoing conversations of agriculture, trade and sustainability in an increasingly inter-connected world. A pervasive theme throughout the book is the general lack of knowledge of the use of water in producing and consuming food. The chapters, arising from a workshop supported by the OECD Co-operative Research Programme: Biological Resources Management for Sustainable Agricultural Systems, on virtual water, agriculture and trade at the University of Nebraska-Lincoln, consider questions of gaps in knowledge, why sustainability matters and the policy implications of virtual water trade. Contributors show how water is a lens through which to examine an array of vital issues facing humanity and the planet: human and animal health; food production; environmental management; resource consumption; climate change adaptation and mitigation; economic development, trade and competitiveness; and ethics and consumer trust. Virtual Water will be of great interest to scholars of water, resource management and consumption, the environmental aspects of development, agriculture and food production. It originally published as a special issue of Water International.

Author : Anonim
Publisher : Unknown
Page : 228 pages
File Size : 46,7 Mb
Release : 1990
Category : Agricultural pollution
ISBN : UIUC:30112113039553

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Information Exchange on Models and Data Needs Relating to the Impact of Agricultural Practices on Water Quality by Anonim Pdf