Download or read book Modeling Wheat Production from Nitrogen Fertilization written by Abolfazl Nasseri and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The north of Iran is one of the main regions for agricultural production but the occurred precipitation is insufficient to meet wheat requirement. Consequently, supplemental irrigation is necessary for obtaining potential yield of wheat in rainfed areas. In addition, nitrogen fertilization can improve water use efficiency in such areas. Therefore, supplemental irrigation and nitrogen fertilization effects on production of winter wheat under rainfed climate condition were investigated in this book. Soil and water researchers, engineers and students can use findings of this study.
Download or read book Modeling Nitrogen Fertilization Practices of Wheat Farmers in Mexico s Yaqui Valley written by Beatriz Avalos Sartorio and published by . This book was released on 1997 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global Agricultural Trade and Developing Countries written by M. Ataman Aksoy and published by World Bank Publications. This book was released on 2004-11-01 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Agricultural Trade and Developing Countries presents research findings based on a series of commodity studies of significant economic importance to developing countries. The book sets the stage with background chapters and investigations of cross-cutting issues. It then describes trade and domestic policy regimes affecting agricultural and food markets, and assesses the resulting patterns of production and trade. The book continues with an analysis of product standards and costs of compliance and their effects on agricultural and food trade. The book also investigates the impact of preferences given to selected countries and their effectiveness, then reviews the evidence on the attempts to decouple agricultural support from agricultural output. The last background chapter explores the robustness of the global gains of multilateral agricultural and food trade liberalization. Given this context, the book presents detailed commodity studies for coffee, cotton, dairy, fruits and vegetables, groundnuts, rice, seafood products, sugar, and wheat. These markets feature distorted policy regimes among industrial or middle-income countries. The studies analyze current policy regimes in key producing and consuming countries, document the magnitude of these distortions and estimate the distributional impacts - winners and losers - of trade and domestic policy reforms. By bringing the key issues and findings together in one place, Global Agricultural Trade and Developing Countries aids policy makers and researchers, both in their approach to global negotiations and in evaluating their domestic policies on agriculture. The book also complements the recently published Agriculture and the WTO, which focuses primarily on the agricultural issues within the context of the WTO negotiations.
Download or read book Quantifying and Understanding Plant Nitrogen Uptake for Systems Modeling written by Liwang Ma and published by CRC Press. This book was released on 2008-08-27 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses New Advancements to Improve Existing Simulations of Plant NitrogenWritten 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 m
Download or read book Modeling Physiology of Crop Development Growth and Yield written by Afshin Soltani and published by CABI. This book was released on 2012-01-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Model studies focus experimental investigations to improve our understanding and performance of systems. Concentrating on crop modelling, this book provides an introduction to the concepts of crop development, growth, and yield, with step-by-step outlines to each topic, suggested exercises and simple equations. A valuable text for students and researchers of crop development alike, this book is written in five parts that allow the reader to develop a solid foundation and coverage of production models including water- and nitrogen-limited systems.
Download or read book Optimizing Durum Wheat Cultivation in Northern Italy written by Matthew Aaron Bruce and published by . This book was released on 2019 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high spatial variability observed in the North Italian fields presents the potential for employing variable rate application (VRA) of fertilizer during durum wheat cultivation. The first objective of this experiment was utilize proximal and remote sensors to calculate vegetation indices (VI) and indicate the N uptake dynamic of the durum wheat (Triticum durum Desf. var. Biensur). Additionally, the identified correlations between N uptake and normalized difference vegetation index (NDVI) from a Trimble Green Seeker device were assessed against data collected from previous years (2011, 2012, and 2013) to produce a significant regression model. The second objective was to conduct a VRA experiment using proximal sensors and a real-time crop model with medium weather forecasts to predict crop nitrogen uptake and improve nitrogen fertilization of the wheat. Post-harvest evaluations showed marginal gains in yield quantity and a lower coefficient of variation of the wheat grain in the VRA zones.
Download or read book Simulation of Water Use Nitrogen Nutrition and Growth of a Spring Wheat Crop written by H. van Keulen and published by . This book was released on 1987 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat models - a comparative review. Plant growth processes. Soil processes. Performance of the model.
Download or read book Crop Modeling and Decision Support written by Weixing Cao and published by Springer Science & Business Media. This book was released on 2010-07-10 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Crop Modeling and Decision Support" presents 36 papers selected from the International Symposium on Crop Modeling and Decision Support (ISCMDS-2008), held at Nanjing of China from 19th to 22nd in April, 2008. Many of these papers show the recent advances in modeling crop and soil processes, crop productivity, plant architecture and climate change; the rests describe the developments in model-based decision support systems (DSS), model applications, and integration of crop models with other information technologies. The book is intended for researchers, teachers, engineers, and graduate students on crop modeling and decision support. Dr. Weixing Cao is a professor at Nanjing Agricultural University, China.
Download or read book Using a Simple Model to Guide Management of Nitrogen Fertilization of Wheat in the Wimmera Region Victoria written by H. J. Bos and published by . This book was released on 1992 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Efficiency in Agricultural Soils written by David S. Jenkinson and published by Pergamon. This book was released on 1988 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Seminar on nitrogen efficiency in agricultural soils and the efficiency use of fertilizer nitrogen, held in Edinburgh, 16-18 September 1987, as part of the EC Programme for the Coordination of Agricultural Research.
Download or read book Nitrogen Turnover in the Soil Crop System written by J.J. Groot and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Optimizing Input Use in Highly Variable Environments written by Meri Lynn Whitaker and published by . This book was released on 1991 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Climate Change and Agroecosystems written by Daniel Hillel and published by World Scientific. This book was released on 2011 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: The portending process of climate change, induced by the anthropogenic accumulations of greenhouse gases in the atmosphere, is likely to generate effects that will cascade through the biosphere, impacting all life on earth and bearing upon human endeavors. Of special concern is the potential effect on agriculture and global food security. Anticipating these effects demands that scientists widen their field of vision and cooperate across disciplines to encompass increasingly complex interactions. Trans-disciplinary cooperation should aim to generate effective responses to the portending changes, including actions to mitigate the emissions of greenhouse gases and to adapt to those climate changes that cannot be avoided. This handbook presents an exposition of current research on the impacts, adaptation, and mitigation of climate change in relation to agroecosystems. It is offered as the first volume in what is intended to be an ongoing series dedicated to elucidating the interactions of climate change with a broad range of sectors and systems, and to developing and spurring effective responses to this global challenge. As the collective scientific and practical knowledge of the processes and responses involved continues to grow, future volumes in the series will address important aspects of the topic periodically over the coming years.
Download or read book Soil Acidity and Plant Growth written by A Robson and published by Elsevier. This book was released on 2012-12-02 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Acidity and Plant Growth emerged from concerns over increasing acidification of soils under improved pastures over wide areas of southern Australia. While the book has its origin in the problems of acidification of Australian soils under pastures, the authors examine soil acidity within a much broader framework, making their views relevant to all agricultural and natural ecosystems on acid soils. The book's first two chapters discuss the chemistry of soil acidity and the ecological processes leading to it. This is followed by separate chapters on biological responses to soil acidity, covering mineralization of soil nitrogen, incidence of plant diseases, plant mycorrhizal associations, symbiotic nitrogen fixation in legumes, and genetic variability in plant response to toxicities. The remaining chapters focus on the correction of soil acidity problems by liming. These include studies on the rates of application and effectiveness of liming materials; and the development and use of computer modelling procedures to help researchers identify the effects and interactions of soil pH on component processes and to provide assistance to farmers in the management of long-term subterranean clover pastures.
Download or read book Nitrogen in Agriculture written by Takuji Ohyama and published by BoD – Books on Demand. This book was released on 2021-09-29 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is the most important nutrient in agricultural practice because the availability of nitrogen from the soil is generally not enough to support crop yields. To maintain soil fertility, the application of organic matters and crop rotation have been practiced. Farmers can use convenient chemical nitrogen fertilizers to obtain high crop yields. However, the inappropriate use of nitrogen fertilizers causes environmental problems such as nitrate leaching, contamination in groundwater, and the emission of N2O gas. This book is divided into the following four sections: “Ecology and Environmental Aspects of Nitrogen in Agriculture”, “Nitrogen Fertilizers and Nitrogen Management in Agriculture”, “N Utilization and Metabolism in Crops”, “Plant-Microbe Interactions”.
Download or read book Nitrogen Fertilization in the Environment written by Peter Bacon and published by CRC Press. This book was released on 1995-01-23 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the interactions between nitrogen and the ecosystem and discusses nitrogen fertilization practices around the world. Simulation models that play an important role in determining the dynamics of source-sink relationships are presented, helping to pinpoint inefficiencies and develop strategies to synchronize nitrogen supply and demand.
