Nitrogen In Agriculture
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Nitrogen In Agriculture
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Author : Takuji Ohyama
language : en
Publisher: BoD – Books on Demand
Release Date : 2021-09-29
Nitrogen In Agriculture written by Takuji Ohyama and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-29 with Technology & Engineering categories.
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”.
Agriculture And The Nitrogen Cycle
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Author : Arvin Mosier
language : en
Publisher: Island Press
Release Date : 2013-04-10
Agriculture And The Nitrogen Cycle written by Arvin Mosier and has been published by Island Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-10 with Science categories.
Nitrogen is an essential element for plant growth and development and a key agricultural input-but in excess it can lead to a host of problems for human and ecological health. Across the globe, distribution of fertilizer nitrogen is very uneven, with some areas subject to nitrogen pollution and others suffering from reduced soil fertility, diminished crop production, and other consequences of inadequate supply. Agriculture and the Nitrogen Cycle provides a global assessment of the role of nitrogen fertilizer in the nitrogen cycle. The focus of the book is regional, emphasizing the need to maintain food and fiber production while minimizing environmental impacts where fertilizer is abundant, and the need to enhance fertilizer utilization in systems where nitrogen is limited. The book is derived from a workshop held by the Scientific Committee on Problems of the Environment (SCOPE) in Kampala, Uganda, that brought together the world's leading scientists to examine and discuss the nitrogen cycle and related problems. It contains an overview chapter that summarizes the group's findings, four chapters on cross-cutting issues, and thirteen background chapters. The book offers a unique synthesis and provides an up-to-date, broad perspective on the issues of nitrogen fertilizer in food production and the interaction of nitrogen and the environment.
Nitrogen In Agricultural Systems
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Author : James Stuart Schepers
language : en
Publisher: ASA-CSSA-SSSA
Release Date : 2008
Nitrogen In Agricultural Systems written by James Stuart Schepers and has been published by ASA-CSSA-SSSA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Technology & Engineering categories.
Review of the principles and management implications related to nitrogen in the soil-plant-water system.
Agricultural Nitrogen Use And Its Environmental Implications
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Author : Y. P. Abrol
language : en
Publisher: I. K. International Pvt Ltd
Release Date : 2007
Agricultural Nitrogen Use And Its Environmental Implications written by Y. P. Abrol and has been published by I. K. International Pvt Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Political Science categories.
Nitrogen fertilizers are the inescapable necessity to enhance agricultural production and to sustain food security. However, their inefficient use accrues from inherent limitations of the crop plants as well as the manner in which N fertilizers are formulated, applied and managed. Excessive accumulation of N in the environment leads to soil acidification, pollution of groundwater and eutrophication of surface water, posing a public health problem as well as ecosystem imbalance. Moreover, the ozone layer depletion and greenhouse effects of NOx gases have global implications. Agricultural Nitrogen Use: Environmental Implications provides a comprehensive, interdisciplinary description of problems related to the efficient use of nitrogen in agriculture, in the overall context of the nitrogen cycle, its environmental and human health implications, as well as various approaches to improve N use efficiency. The book is presented in six sections: N Use, Flows and Cycling in Agricultural Systems; N Use Efficiency in Crop Ecosystems; Management Options and Strategies for Enhancing N Use Efficiency; Plant Physiological and Molecular Aspects of Enhancing N Use Efficiency; Role of Legumes and Biofertilizers in Agricultural N Economy; and Environmental and Human Health Implications.
Nitrogen In Agriculture
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Author : A. E. Johnston
language : en
Publisher:
Release Date : 2009
Nitrogen In Agriculture written by A. E. Johnston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Nitrogen fertilizers categories.
The increased use of nitrogen (N) fertilizers in agriculture in the last five decades is justified by the increased yield potential of the crops grown and the judicious use of agrochemicals to control weeds, pests and diseases to protect that potential. Nitrogen use-efficiency can be assessed in a number of ways, discussed here with examples, but is usually determined as percent recovery of added N in the harvested product when calculated by the difference method. Assessed in this way, N-use efficiency is frequently only about 50%. But N-use efficiency of applied N should include that taken up by roots to produce the above-ground plant, where N plays a vital role in photosynthesis, the fixation of carbon dioxide to produce sugars, and the root system, which takes up nutrients and water. The fate of this N after harvest is important, but the total amount in the crop should be included in any estimate of percent recovery of applied N. Within the plant-soil system, the soil microbial population competes with the plant for fertilizer N applied to increase plant growth. Hence any fertilizer N remaining in the soil should also be included in an estimate of the fate of applied N. The use of 15N-labelled fertilizer allows the fate of the applied N to be determined. At harvest up to 70%, and sometimes more than this, of the applied N can be accounted for in the above-ground crop and in the soil to 100 cm. The fate of the N which is not accounted for should be a major research topic.
The World S Greatest Fix
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Author : G. J. Leigh
language : en
Publisher: Oxford University Press
Release Date : 2004-08-19
The World S Greatest Fix written by G. J. Leigh and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-08-19 with Science categories.
In the tradition of Jared Diamond's Guns, Germs, and Steel, this gives the very early history of how human ingenuity overcame the risk of famine through productive agriculture. Starting with a layman's guide to the chemistry of nitrogen fixation, the book goes on to show how humans emerged from nomadic lifestyles and began developing towns and settlements. When they for the first time began planting the same fields year after year, they noticed quickly the need to ensure soil fertility. But how? The method they came up with is still in use to this day.
Nitrogen In Agriculture
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Author : Khan Amanullah
language : en
Publisher: BoD – Books on Demand
Release Date : 2018-02-01
Nitrogen In Agriculture written by Khan Amanullah and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-01 with Science categories.
Nitrogen is the most yield-restraining nutrient in crop production globally. Efficient nitrogen management is one of the most important factor for improving nitrogen use efficiency, field crops productivity and profitability. Efficient use of nitrogen for crop production is therefore very important for increasing grain yield, maximizing economic return and minimizing nitrous oxide (N2O) emission from the fields and nitrate (NO3) leaching to ground water. Integrated nitrogen management is a good strategy to improve plant growth, increase yield and yield components, grain quality and reduce environmental problems. Integrated nitrogen management (combined use of chemical + organic + bio-fertilizers) in field crop production is more resilient to climate change.
Nitrogen In Agricultural Landscape
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Author : Lech Wojciech Szajdak
language : en
Publisher: CRC Press
Release Date : 2021-06-17
Nitrogen In Agricultural Landscape written by Lech Wojciech Szajdak and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-17 with Technology & Engineering categories.
Agriculture transforms the environment. The simplification of agroecosystems structure increases the hazards of leaching, wind and water erosion, and volatilization of chemicals from soil. Soil nitrogen is of interest as a major crop nutrient, but also as a potential environmental pollutant. Knowledge about the behavior of soil nitrogen is desirable in order to optimize plant growth and crop yield and to minimize environmental side effects. This book also gives information about the function of biogeochemical barriers in the form of shelterbelts, which efficiently decrease the concentrations of various forms of nitrogen in ground water.
Nitrogen In The Environment Sources Problems And Management
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Author : R.F. Follett
language : en
Publisher: Gulf Professional Publishing
Release Date : 2001-12-03
Nitrogen In The Environment Sources Problems And Management written by R.F. Follett and has been published by Gulf Professional Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-12-03 with Science categories.
Nitrogen in the Environment: Sources, Problems, and Management is the first volume to provide a holistic perspective and comprehensive treatment of nitrogen from field, to ecosystem, to treatment of urban and rural drinking water supplies, while also including a historical overview, human health impacts and policy considerations. It provides a worldwide perspective on nitrogen and agriculture. Nitrogen is one of the most critical elements required in agricultural systems for the production of crops for feed, food and fiber. The ever-increasing world population requires increasing use of nitrogen in agriculture to supply human needs for dietary protein. Worldwide demand for nitrogen will increase as a direct response to increasing population. Strategies and perspectives are considered to improve nitrogen-use efficiency. Issues of nitrogen in crop and human nutrition, and transport and transformations along the continuum from farm field to ground water, watersheds, streams, rivers, and coastal marine environments are discussed. Described are aerial transport of nitrogen from livestock and agricultural systems and the potential for deposition and impacts. The current status of nitrogen in the environment in selected terrestrial and coastal environments and crop and forest ecosystems and development of emerging technologies to minimize nitrogen impacts on the environment are addressed. The nitrogen cycle provides a framework for assessing broad scale or even global strategies to improve nitrogen use efficiency. Growing human populations are the driving force that requires increased nitrogen inputs. These increasing inputs into the food-production system directly result in increased livestock and human-excretory nitrogen contribution into the environment. The scope of this book is diverse, covering a range of topics and issues from furthering our understanding of nitrogen in the environment to policy considerations at both farm and national scales.
Nitrogen In Agricultural Landscape
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Author : Lech Wojciech Szajdak
language : en
Publisher: CRC Press
Release Date : 2021-06-18
Nitrogen In Agricultural Landscape written by Lech Wojciech Szajdak and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-18 with Technology & Engineering categories.
Agriculture transforms the environment. The simplification of agroecosystems structure increases the hazards of leaching, wind and water erosion, and volatilization of chemicals from soil. Soil nitrogen is of interest as a major crop nutrient, but also as a potential environmental pollutant. Knowledge about the behavior of soil nitrogen is desirable in order to optimize plant growth and crop yield and to minimize environmental side effects. This book also gives information about the function of biogeochemical barriers in the form of shelterbelts, which efficiently decrease the concentrations of various forms of nitrogen in ground water.