Development of a Generic Process Oriented Model for Simulation of Crop Growth PDF Download

Author: Enli Wang
Publisher: Herbert Utz Verlag
ISBN: 9783896752338
Category : Crops
Languages : en
Pages : 214

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Author: J.J. Groot
Publisher: Springer Science & Business Media
ISBN: 9401134340
Category : Nature
Languages : en
Pages : 244

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Book Description
In the Netherlands the Institute for Soil Fertility Research plays a major role in soil biological, soil physical and plant nutritional research on the availability of nitrogen to crops. Main subjects of research are nitrogen turnover in the crop-soil ecosystem through biological transformations, nitrogen transport through the soil and nitrogen losses by leaching, denitrification and volatilization, and nitrogen use efficiency of various crops and cropping systems. The current knowledge in the different fields of research is integrated in simulation models. Simulation models not only make it possible to summarize and structure knowledge, but also, after verification, to extra- late the knowledge to situations different from the situations that have actually been studied. Such research is also carried out in other European and non-European countries. To compare the various simulation models currently in use, a workshop was organized by the Institute for Soil Fertility Research on 5-6 June 1990 on the occasion of its centennial. The title of the workshop was 'Nitrogen turnover in the soil-crop ::cosystem: modelling of biological transformations, transport of nitrogen and nitrogen use efficiency'. The 40 Jarticipants, who came from Canada and various European countries, were requested to run their model with data Jrovided by the Institute prior to the workshop. Data from 18 cases were made available to the participants: three ocations, three treatments, and two seasons.

Author: J. Goudriaan
Publisher: Springer Science & Business Media
ISBN: 9401107505
Category : Science
Languages : en
Pages : 247

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We dedicate this book to professor C. T. de Wit (1924 - 1993) who initiated Production Ecology as a school of thought at the Wageningen Agricultural Univer sity (see Rabbinge et at. , 1990). To acknowledge the leading role of C. T. de Wit, a recently formed graduate school at this university in Production Ecology was named after him. Production Ecology is the study of ecological processes, with special attention to flows of energy and matter as factors that determine the productivity of ecological systems. Agro-ecosystems are a special case of ecosystems which are much better suited for the productivity approach than natural ecosystems are. This is the reason for the strong role of agricultural research in production ecology. On the other hand, it must be recognized that the spatial heterogeneity of natural ecosys tems and their species richness may alter some ecophysiological relationships. However, the basic physical, chemical and physiological processes will be the same. De Wit introduced the state variable approach as the basis for simulation mod elling. In this approach the floating character of nature is schematized into a series of snapshots over time in which the states are frozen at each separate moment. The current state determines how the rates of change will lead to the next snapshot. This way of thinking enables a clear and workable representation of interacting simul taneous processes, without compromising on the mathematics.

Author: Victor Sadras
Publisher: Elsevier
ISBN: 0124169791
Category : Technology & Engineering
Languages : en
Pages : 566

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Book Description
From climate change to farming systems to genetic modification of organisms, Crop Physiology, Second Edition provides a practical tool for understanding the relationships and challenges of successful cropping. With a focus on genetic improvement and agronomy, this book addresses the challenges of environmentally sound production of bulk and quality food, fodder, fiber, and energy which are of ongoing international concern. The second edition of Crop Physiology continues to provide a unique analysis of these topics while reflecting important changes and advances in the relevant science and implementation systems. Contemporary agriculture confronts the challenge of increasing demand in terms of quantitative and qualitative production targets. These targets have to be achieved against the background of soil and water scarcity, worldwide and regional shifts in the patterns of land use driven by both climate change and the need to develop crop-based sources of energy, and the environmental and social aspects of agricultural sustainability. - Provides a view of crop physiology as an active source of methods, theories, ideas, and tools for application in genetic improvement and agronomy - Written by leading scientists from around the world - Combines environment-specific cropping systems and general principles of crop science to appeal to advanced students, and scientists in agriculture-related disciplines, from molecular sciences to natural resources management

Author: Manjit S. Kang
Publisher: CRC Press
ISBN: 9781560221234
Category : Technology & Engineering
Languages : en
Pages : 412

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Book Description
Get cutting-edge information to improve crop breeding and productivity! Crop improvement will become progressively important over the next few decades as the world’s population is expected to top 10 billion people, with more than eight billion in developing countries alone. Genetic and Production Innovations in Field Crop Technology: New Developments in Theory and Practice tackles this enormous challenge by detailing the latest available research and innovations for crop breeders and physiologists for the twenty-first century. Respected multidisciplinary scientists comprehensively discuss cutting-edge advances in field crop technology and genetic production as they keep an eye on the goal of providing nutrition to a hungry world. Genetic and Production Innovations in Field Crop Technology emphasizes an integrated approach to solve global crop production problems and increase crop productivity. Crop research experts review methods of globally improving crop yield, food product efficiency, and providing adequate nutrition in diet. The authors discuss various types of field crops, including corn, soybeans, winter wheat, cassavas, rubber, sunflowers, and barley, as well as review the exciting innovations on the food production horizon. The text is extensively referenced and includes useful graphs and tables to clearly present data. Genetic and Production Innovations in Field Crop Technology presents: visionary articles by authorities in agricultural sciences statistical design axioms and modern plot techniques discussions of integration of crop physiology and plant breeding information on systematic collection and preservation of germplasm explanations of genetic diversity in soybeans corn breeding and production research—including the economics—in the United States research on cassava breeding in less favorable environments to alleviate poverty strategies for improving yielding potential of rubber in sub-optimal environments information on fine-tuning wheat genotype-by-environment interaction methodology reviews of QTL identification, mega-environment classification, and effective strategies for marker-based selection via GGE biplot analyses research on statistical properties and practical usefulness of the Scheffe-Calinski and Shukla models relative to genotype-by-environment interaction Genetic and Production Innovations in Field Crop Technology: New Developments in Theory and Practice belongs in every agricultural university library. Crop breeders, geneticists, agronomists and horticulturists, educators, and students will find this an invaluable research source for now and for the future.

Author: J Williams
Publisher: CSIRO PUBLISHING
ISBN: 0643105697
Category : Technology & Engineering
Languages : en
Pages : 542

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Book Description
Dryland farming is a major export earner for many temperate-zone countries, yet it continues to degrade a country's natural resources. Effects are not restricted to the land - changes in water quality can reduce the potential uses of water and bring about catastrophic changes in both freshwater and coastal ecosystems. Farming Action: Catchment Reaction provides a comprehensive technical overview of the relationships between dryland farming systems and catchment land and water quality in Australia, and integrates it in a whole system framework. It deals with the issues in terms of people, pointers, processes and prediction as it discusses social aspects of developing and implementing research to improve dryland farming systems in catchment management programs, indicators of catchment health, and the processes which determine the impact of the farming action on the catchment response. It concludes by considering the adequacy of our ability to use this process knowledge in models to predict the effect of dryland farming on catchment condition.

Author: Freek D. van der Meer
Publisher: Springer Science & Business Media
ISBN: 1402001940
Category : Technology & Engineering
Languages : en
Pages : 417

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Book Description
A significant step forward in the world of earth observation was made with the development of imaging spectrometry. Imaging spectrometers measure reflected solar radiance from the earth in many narrow spectral bands. Such a spectroscopical imaging system is capable of detecting subtle absorption bands in the reflectance spectra and measure the reflectance spectra of various objects with a very high accuracy. As a result, imaging spectrometry enables a better identification of objects at the earth surface and a better quantification of the object properties than can be achieved by traditional earth observation sensors such as Landsat TM and SPOT. The various chapters in the book present the concepts of imaging spectrometry by discussing the underlying physics and the analytical image processing techniques. The second part of the book presents in detail a wide variety of applications of these new techniques ranging from mineral identification, mapping of expansive soils, land degradation, agricultural crops, natural vegetation and surface water quality. Additional information on extras.springer.com Sample hyperspectral remote sensing data sets and ENVI viewing software (Freelook) are available on http://extras.springer.com

Author: P Singh
Publisher: CRC Press
ISBN: 1482280442
Category : Science
Languages : en
Pages : 534

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Book Description
The use of simulation models is a necessity and also an aid in the decision-making process in sustainable agricultural systems. Organizing the experimental knowledge of crop production systems without the book keeping and deductive methods of mathematics is very difficult. This book aims to guide readers in the process by which the properties of th

Author: CIMMYT.
Publisher: CIMMYT
ISBN: 9789686923902
Category : Heterosis
Languages : en
Pages : 376

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Author: Philip Bernard Tinker
Publisher: Oxford University Press, USA
ISBN: 0195124928
Category : Crops
Languages : en
Pages : 465

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Book Description
This is a completely revised edition of the previously titled Solute Movement in the Soil-Root System . It describes in detail how plant nutrients and other solutes move in the soil in response to plant uptake, and it provides a basis for understanding processes in the root zone so that they can be modeled realistically in order to predict the effects of variations in natural conditions or our own practices.