Download or read book Nitrogen Carrier and Nitrogen Rate Influence on Soil Properties and Nutrient Uptake by Crops written by and published by . This book was released on 1960 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Four Nitrogen Carriers on Nitrogen Uptake and Yield of Crops and Physical and Chemical Properties of the Soil as Modified by Organic Matter and Exchangeable Sodium written by P. C. Singleton and published by . This book was released on 1957 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Four Nitrogen Carriers on Yield of Crops and on Physical and Chemical Properties of Soil written by Wyoming Agricultural Experiment Station and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture and the Nitrogen Cycle written by Arvin Mosier and published by Island Press. This book was released on 2013-04-10 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Abstracts of Recent Published Material on Soil and Water Conservation written by and published by . This book was released on 1961 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts for Dec. 1954- issued in the Agricultural Research Service's series ARS-41.
Download or read book Soil and Plant Nitrogen written by Georges Hofman and published by . This book was released on 2004 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fate and Transport of Nutrients written by Ronald F. Follett and published by . This book was released on 1995 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen in the Environment Sources Problems and Management written by R.F. Follett and published by Gulf Professional Publishing. This book was released on 2001-12-03 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nutrients for Sugar Beet Production written by Arthur Philip Draycott and published by CABI. This book was released on 2003 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: After a summary of world sugar production from beets, the authors cover the plant's need of each macro and micronutrient and effects on growth, yield and crop quality. The soil's supply of nutrients is examined as the basis for use of mineral fertilizers, organic manures and foliar applications. The book provides an up-to-date review of relevant research and the authors draw out practical guidelines so that all concerned with growing the crop can make use of this latest information. The book is destined to become the standard reference on the subject for many years to come. It represents the only significant work in English since Dr. Draycott's earlier title on the same subject, published 30 years ago.
Download or read book Residual Effects of Fall and Spring applied Nitrogen Fertilizers on Crop Yields in the Southeastern United States written by Robert W. Pearson and published by . This book was released on 1961 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen fertilizer broadcast in November or December on widely different soils at seven locations in Alabama, Georgia, and Mississippi during 1955-59 was only 49 percent as effective as nitrogen fertilizer applied the following spring when measured by corn yields. In terms of nitrogen recovered, the relative effectiveness was 62 percent. There were no consistent differences among the five nitrogen sources applied in the fall as measured by corn yields, but nitrogen recovery tended to be lower from urea than from the other sources. Considerable residual effects of spring-applied nitrogen were found over a period of 16 months based on both yield and nitrogen uptake by the crops. Average uptakes of 25 and 34 pounds per acre of additional nitrogen were made by the second and third crops, respectively, from the 200-pound original application. This residual nitrogen produced average yield increases of 1,600 pounds of dry forage and 19 bushels of corn per acre. These results emphasize the economic importance of residual nitrogen and the need for soil test procedures for its estimation.
Download or read book Enhancing the Efficiency of Nitrogen Utilization in Plants written by Sham S. Goyal and published by CRC Press. This book was released on 2006-08-22 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest advancements and innovations in regulating the nitrogen levels in your crops Enhancing the Efficiency of Nitrogen Utilization in Plants examines current research to present an overview of inorganic nitrogen uptake and metabolism in plant life and crop production. This comprehensive resource is divided into sections for quick and easy reference, focusing on physiology and adaptive mechanisms, molecular genetics, and applied aspects. The world’s leading experts in agronomy, crop science, and plant physiology analyze the most effective methods and management practices to ensure maximum plant growth and production. Enhancing the Efficiency of Nitrogen Utilization in Plants develops links between basic and applied research and practical crop production. This unique book addresses a wide range of topics that relate to nitrogen use efficiency, and to plant and crop responses to applications of nitrogen via fertilizers, including nitrogen acquisition and reduction; crop rotation; molecular approaches, genetics, and markers; balanced fertilization and controlled-release fertilizers; nitrogen decline, supply, and demand; crop breeding; radiation use; nutrient deficiency and toxicity; nitrate induction and signaling; nitrogen transport; and nitrogen use at the leaf and canopy level . Enhancing the Efficiency of Nitrogen Utilization in Plants examines: plant responses to changes in the supply of the two inorganic nitrogen sources of nitrate and ammonium root system control mechanisms of nitrogen uptake nitrate uptake and reduction in higher and lower plants how nitrogen affects biomass production in a canopy nitrogen’s effects on radiation interception and radiation use efficiency senescence and photosynthesis the regulation of nitrogen and carbon metabolisms by sugars and nitrogen metabolites integrated nitrogen fertilization the use of legumes for soil improvement root system control mechanisms fertility and crop nutrient demand chemical and biological processes that influence nitrogen transformation or loss the use of simulation models to measure water and nutrient transport in soils and much more Enhancing the Efficiency of Nitrogen Utilization in Plants is an invaluable classroom aid for academics working in plant physiology and agronomy, and an essential professional resource for researchers working in plant and crop production.
Download or read book Effect of Four Nitrogen Carriers on Yield of Crops and on Physical and Chemical Properites of Soil written by L. I. Painter and published by . This book was released on 1960 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Nitrogen written by William Victor Bartholomew and published by . This book was released on 1965 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Origin and distribution of nitrogen in soil. Soil inorganic nitrogen. Organic nitrogen in soils. Ammonium fixation and other reactions involving a nonenzymatic immobilization of mineral nitrogen in soil. Mineralization and immobilization of nitrogen in the decomposition of plant and animal residues. Nitrification. Denitrification. Symbiotic nitrogen fixation. Environmental factors in the fixation of nitrogen by the legume. Nonsymbiotic nitrogen fixation. The plant's need for and use of nitrogen. Movement of nitrogen in soil. Evaluation of incoming and outgoing processes thar affect soil nitrogen.
Download or read book Research Bulletin written by and published by . This book was released on 1982 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Use and Behavior in Crop Production written by L. Fred Welch and published by . This book was released on 1979 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most plants absorbmore nitrogen than any other nutrient. Because the amount needed is so large and easily be lost from many soils, nitrogen is usually the most limiting nutrient for plant growth. Although about 79 percent of the atmosphere is nitrogen, only nitrogen-fixingplants such as legumeswith their associated bacteria are able to use this abundant source. The nonleguminous grain crops must receive supplemental nitrogen to produce satisfactory yields. Until the last few decades the supply of available nitrogen in the soil was increased primarily by legumes and manure. These sources should be used when economically feasible, but many important grain-producing areas of the world must now rely on commercial fertilizer nitrogen. For economic reasons researchers and growers have been interested for many years in improving yields from each unit of nitrogen. Recently, however, the efficient use of nitrogen has become an environmental issue as well, because high nitrate concentrations in water may be harmful to humans, especiali infants, and to livestock. If plants absorb more of the addedfertilizer nitrogen, then less is likely to leach from fields into drinking water. Improving nitrogen efficiency has also become crucial in order to conserve dwinling supplies of natural gas, which is used in large quantities to manufacture nitrogenfertilizers.
Download or read book The Influence of Nitrogen Rate and Source on Plant and Soil Properties written by Flake Leroy Fisher and published by . This book was released on 1959 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acta Agronomica Hungarica written by and published by . This book was released on 2007 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
