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Author : J. L. M. Huntjens
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (79 download)
Download or read book Immobilization and Mineralization of Nitrogen in Pasture Soil written by J. L. M. Huntjens and published by . This book was released on 1978 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Immobilization and Mineralization of Nitrogen in Pasture Soil written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Johannes Ludovicus Maurice Huntjens
Publisher :
ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.:/5 (776 download)
Download or read book Immobilization and mineralization of nitrogen in pasture soil written by Johannes Ludovicus Maurice Huntjens and published by . This book was released on 1981 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pedro A. Sanchez
Publisher : Cambridge University Press
ISBN 13 : 1107176050
Total Pages : 685 pages
Book Rating : 4.1/5 (71 download)
Download or read book Properties and Management of Soils in the Tropics written by Pedro A. Sanchez and published by Cambridge University Press. This book was released on 2019-01-10 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author : Amabelia Silvia del Pino Machado
Publisher : Cuvillier Verlag
ISBN 13 : 386537509X
Total Pages : 189 pages
Book Rating : 4.8/5 (653 download)
Download or read book Estimating Nitrogen Mineralization Potential of Soils and the Effect of Water and Temperature and Crop Residues on Nitrogen Net Mineralization written by Amabelia Silvia del Pino Machado and published by Cuvillier Verlag. This book was released on 2005 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Charles Whitehead
Publisher : Cabi
ISBN 13 :
Total Pages : 424 pages
Book Rating : 4.F/5 ( download)
Download or read book Grassland Nitrogen written by David Charles Whitehead and published by Cabi. This book was released on 1995 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grasses: Uptake of nitogen and effects on morphology and physiology; Legumes: biological nitogen fixation and interaction with grasses; Consumption, digestion and excretion of nitrogen by ruminant livestock; Amounts, sources and fractionation of organic nitrogen in soils; Mineralization, immobilization and availability of nitrogen in soils; Leaching of nitrogen from soils; Volatization of ammonia; Volatilization of gaseous nitrogen and nitrogen oxides through denitrification and nitrification; Use of fertilizer nitrogen and slurry nitrogen on grassland: recovery and response; Response to fertilizer nitrogen: influence of sward type, pattern of fertilizer application and method of harvesting; Response to fertilizer nitrogen: influence of weather, seasonal factors and soil type; Response to fertilizer nitrogen: influence of type of fertilizer and supplies of other nutrients; Influence of fertilizer nitrogen on the composition and nutritional quality of grassland herbage; Nitrogen balances in contrasting grassland systems.
Author : R Haynes
Publisher : Elsevier
ISBN 13 : 0323148166
Total Pages : 497 pages
Book Rating : 4.3/5 (231 download)
Download or read book Mineral Nitrogen In The Plant-Soil System written by R Haynes and published by Elsevier. This book was released on 2012-12-02 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mineral Nitrogen in the Plant-Soil System provides integrated accounts of the transformations and fate of mineral nitrogen in the plant-soil system. This book emphasizes the understanding of various processes and the factors that affect these processes. It also focuses on the role of biological nitrogen fixation in nitrogen cycling in natural and agricultural systems. The book is divided into seven major chapters and each chapter is further subdivided into various subtopics. The first chapter introduces and outlines the origin, distribution, and cycling of nitrogen in natural and agricultural terrestrial ecosystems. Chapter 2 focuses on the processes of decomposition and mineralization-immobilization turnover. The processes of nitrification are discussed in detail in Chapter 3. The following four chapters discuss topics of retention and movement of nitrogen in soils; gaseous losses of nitrogen; uptake and assimilation of mineral nitrogen by plants; and lastly, the use of nitrogen in agronomic practice. The book will be invaluable to graduate students and researchers in the field of agriculture. This will also cater other parties interested, such as agronomists, soil scientists, plant physiologists, horticulturists, and foresters.
Author : Frederick Hung Fo Au
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.3/5 (129 download)
Download or read book Mineralization of Soil Organic Nitrogen as Influenced by Organic Amendments, Nitrogen Fertilizer, Crop Sequence and Time written by Frederick Hung Fo Au and published by . This book was released on 1958 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fezrat Zenabu Mumuni
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (15 download)
Download or read book Influence of N, P, K, and S Fertilizers on Carbon and Nitrogen Mineralization in Soil written by Fezrat Zenabu Mumuni and published by . This book was released on 1981 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bobby Alton Stewart
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (557 download)
Download or read book Immobilization and Mineralization of Nitrogen in Organic Fractions of Soil written by Bobby Alton Stewart and published by . This book was released on 1961 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lajpat R. Ahuja
Publisher : John Wiley & Sons
ISBN 13 : 0891181806
Total Pages : 480 pages
Book Rating : 4.8/5 (911 download)
Download or read book Methods of Introducing System Models into Agricultural Research written by Lajpat R. Ahuja and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why model? Agricultural system models enhance and extend field research...to synthesize and examine experiment data and advance our knowledge faster, to extend current research in time to predict best management systems, and to prepare for climate-change effects on agriculture. The relevance of such models depends on their implementation. Methods of Introducing System Models into Agricultural Research is the ultimate handbook for field scientists and other model users in the proper methods of model use. Readers will learn parameter estimation, calibration, validation, and extension of experimental results to other weather conditions, soils, and climates. The proper methods are the key to realizing the great potential benefits of modeling an agricultural system. Experts cover the major models, with the synthesis of knowledge that is the hallmark of the Advances in Agricultural Systems Modeling series.
Author : James Stuart Schepers
Publisher : ASA-CSSA-SSSA
ISBN 13 : 9780891181644
Total Pages : 994 pages
Book Rating : 4.1/5 (816 download)
Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.
Author : O. van Cleemput
Publisher : Springer Science & Business Media
ISBN 13 : 9401154503
Total Pages : 666 pages
Book Rating : 4.4/5 (11 download)
Download or read book Progress in Nitrogen Cycling Studies written by O. van Cleemput and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the `8th Nitrogen Workshop' which was held at the University of Ghent, Belgium, from 5 to 8 September 1994. Although nitrogen dynamics in different ecosystems have been studied for several decades, new orientations and other emphases have recently emerged. Previously, nitrogen was considered as an essential element mostly in terms of productivity, but now, more emphasis is attached to environmental consequences. More than 100 contributions in this book tackle recent developments within the fields of nitrogen advice systems, plant response to fertilization, immobilization and mobilization, nitrification, denitrification, leaching, ammonia volatilization and biological nitrogen fixation. A large number of papers is devoted to the formation of gaseous nitrogen compounds, while mineralization-immobilization is another topic of important interest. The book also contains the reports of discussion groups on different aspects of the nitrogen cycle.
Author : V. Vancura
Publisher : Elsevier
ISBN 13 : 0444600000
Total Pages : 499 pages
Book Rating : 4.4/5 (446 download)
Download or read book Soil Microbial Associations written by V. Vancura and published by Elsevier. This book was released on 2012-12-02 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the first publication of its kind to provide a fully comprehensive and detailed approach to the survey of microbial associations in soil: their structure and function in relation to soil fertility and environment protection. The problems covered by this title are presented on various levels of the ecological system; from subcellular phenomena occurring in the microbial cell (genetic and enzyme regulation), to processes taking place in the flow of mass and energy in the agroecosystem. The aim of this monograph is to contribute to the understanding of the laws of formation and function of microbial associations in natural and agricultural soils, and to build a scientific basis for the control of soil biological processes. Using a contemporary approach to some fields of soil microbiology, the book highlights the possibility of utilizing certain microorganisms and microbial processes to increase soil fertility and protect the environment. These critically evaluated and selected results were obtained at the Institute of Microbiology and the Institute of Experimental Phytotechnics of the Czechoslovak Academy of Sciences, in cooperation with the Institute of Microbiology of the Academy of Sciences of the USSR.
Author : S. P. Cuttle
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (246 download)
Download or read book Nitrogen Immobilisation and Leaching in Pasture Soils written by S. P. Cuttle and published by . This book was released on 1992 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maria Pravia Nin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (12 download)
Download or read book Soil Carbon and Nitrogen Saturation in Crop-pasture Agricultural Systems written by Maria Pravia Nin and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated crop-pasture systems can produce high grain yields without large inputs of external nitrogen (N). The extraction of N in grain and animal products, as well as gaseous, leaching and runoff losses should be offset by N fixation during the pasture phase of the integrated crop-pasture systems. The N would be timely delivered in moments of fast crop growth. The design of systems based on these intrinsic synergies offer a pathway for sustainable intensification of agriculture. In this dissertation, I propose that the carbon (C) and N cycling in crop-pasture rotations can be explained by soil C (Cs) saturation theory, and some degree of de-coupling of the C and N cycling. To this end, I developed hypotheses that integrate the concepts of C and N saturation. I tested these hypotheses by combing agroecosystem simulation models and soil incubations using stable isotopes tracing techniques. The systems modeled and the soils for incubations were obtained from long-term crop-pasture rotation experiments at the Instituto Nacional de Investigacin Agropecuaria (INIA), Uruguay. Rotation systems that included perennial species showed greater N mineralization and immobilization when simulated with the Cycles agroecosystem model. Soil C stocks evolution and subsoil Cs distribution were more accurately simulated when the model included an algorithm for Cs saturation than when excluding it, indicating that this mechanism can explain Cs cycling. Soil sampling showed greater Cs saturation levels on the topsoil of systems including perennial species. The incubation of soils with residues enriched in 13C and 15N showed that Cs decomposition increased as Cs saturation increased, and Cs humification and N retention decreased. This accelerated turnover with increased Cs saturation underpins N supply in crop-pasture systems. Despite the link observed between Cs and N saturation mechanisms, some degree of decoupling was revealed by a decreasing C:N ratio of the retained or newly formed organic matter as Cs saturation increased. This lowering of the C:N ratio indicates higher N than C retention, buffering N losses in relatively Cs saturated soils. Overall, this dissertation supports soil C saturation theory and the implied reduction in the retention of C and acceleration of turnover as saturation increases, and suggests that C saturation is a fundamental pillar of the integrated crop-pasture systems function and sustainability.
Author : Mark A. Sutton
Publisher : Cambridge University Press
ISBN 13 : 1139501372
Total Pages : 665 pages
Book Rating : 4.1/5 (395 download)
Download or read book The European Nitrogen Assessment written by Mark A. Sutton and published by Cambridge University Press. This book was released on 2011-04-14 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting the first continental-scale assessment of reactive nitrogen in the environment, this book sets the related environmental problems in context by providing a multidisciplinary introduction to the nitrogen cycle processes. Issues of upscaling from farm plot and city to national and continental scales are addressed in detail with emphasis on opportunities for better management at local to global levels. The five key societal threats posed by reactive nitrogen are assessed, providing a framework for joined-up management of the nitrogen cycle in Europe, including the first cost-benefit analysis for different reactive nitrogen forms and future scenarios. Incorporating comprehensive maps, a handy technical synopsis and a summary for policy makers, this landmark volume is an essential reference for academic researchers across a wide range of disciplines, as well as stakeholders and policy makers. It is also a valuable tool in communicating the key environmental issues and future challenges to the wider public.
