Nitrogen Content and Yield of Crops as Affected by Different Nitrogenous Manures PDF Download
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Author: Burt Laws Hartwell
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 30
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Book Description
Author: Burt Laws Hartwell
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 30
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Book Description
Author: Franklin Louis Davis
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 32
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Book Description
Author: R.F. Follett
Publisher: Gulf Professional Publishing
ISBN: 0080537561
Category : Technology & Engineering
Languages : en
Pages : 539
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Book Description
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.
Author: Edward Burnett Voorhees
Publisher:
ISBN:
Category : Nitrification
Languages : en
Pages : 48
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Book Description
Author: Arvin Mosier
Publisher: Island Press
ISBN: 1597267430
Category : Science
Languages : en
Pages : 320
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Book Description
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.
Author: Paul Wagner
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 102
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Book Description
Author: Edward Burnett Voorhees
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 44
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Book Description
Author: Robert W. Pearson
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 24
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Book Description
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.
Author: A.K. Kolay
Publisher: Atlantic Publishers & Dist
ISBN: 9788126908103
Category : Fertilizers
Languages : en
Pages : 198
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Book Description
Despite The Considerable Progress Made In Enhancing The Capacity Of Soils To Produce Crops Through The Use Of Manures And Fertilizers, There Are Yet A Large Number Of Ignorant Peasants In Many Asian Countries, Including India, Who Have Been Growing Crops Without Applying Adequate Amounts Of Manures And Fertilizers To Their Crop Fields And Consequently Obtaining Considerably Less Yields. It Needs To Be Realized By One And All That Soil, Particularly In The Developing Countries, Has To Be Fertile Enough If Their Ever-Increasing Huge Population Is To Be Adequately Fed And Clothed. Accordingly, Knowledge Of Farmyard Manure, Compost, Fertilizers And Other Agricultural By-Products And Their Applications Is Indispensable.The Present Book Is A Sincere Effort In Disseminating Information On Manures And Fertilizers. Primarily Designed As A Textbook, Its Wide Coverage Includes Varied Manures And Their Preparation And Effects; And Production And Consumption Of Various Fertilizers Along With The Detailed Elucidation Of Their Properties, Uses, Advantages And Disadvantages. Application Of Both Manures And Fertilizers Separately And In Combination Has Been Explained In Depth In Reference To Individual Crops Of Extensive Variety. It Analyses The Applied Aspects Of Fertilizers And Manures In Their Entirety And Suggests How To Adjust Them To Particular Soil And Particular Style Of Farming. The Book Is Well Supplemented With References And Indexes Which Will Prove Useful Study-Aids To Readers. Owing To Its Reader-Friendly Approach To The Subject, Simple Language And Lucid Style, The Book Is Accessible Even To Average Readers. While It Ideally Caters To The Academic Needs Of Undergraduate And Postgraduate Students Of Agriculture Science, It Is A Lasting Valuable Reference Source For Researchers And Teachers, Peasants, Geologists And Soil Surveyors.
Author: Ken Simpson
Publisher: Longman Publishing Group
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 270
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Book Description
