Download or read book Biological nitrogen fixation in forest ecosystems foundations and applications written by John C. Gordon and published by Springer Science & Business Media. This book was released on 1983-09-30 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silvicultural systems and biological nitrogen fixation; Morphology of nitrogen fixers in forest ecosystems; Taxonomy and distribution of non-legume nitrogen-fixing systems; Isolation and culture of nitrogen-fixing organisms; Wheeler, biochemical, physiological and environmental aspects of symbiotic nitrogen fixation; Analysis of nitrogen fixation; Agricultural and horticultural systems: implications for forestry; Nitrogen fixing plants in forest plantation management; Nitrogen fixation in North American forestry: research and application; Application of biological nitrogen fixation in European silviculture; Nitrogen fixation in Southeast Asian forestry: research and practice; Biological nitrogen fixation in forestry: research and practice in Australia and New Zealand.
Download or read book Methods for Evaluating Biological Nitrogen Fixation written by F. J. Bergersen and published by John Wiley & Sons. This book was released on 1980 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cultivation of diazotrophic microorganisms. Measurement of nitrogen fixation by direct means. Measurement of nitrogen fixation by indirect means. Methods for legumes in glasshouses and controlled environment cabinets. Non-legumes nodule systems. Methods for studying nitrogenase. Methods for studying enzymes involved in metabolism related to nitrogenase. Preparation and experimental use of leghaemoglobin. Methods for identifying strains of diazotrophs. Genetic studies with diazotrophs. Experiments with crop and pasture legumes: principles and practice. Production and quality control of legume inoculants. Forage grasses and grain crops. Nitrogen fixation in natural plant communities and soils. Sytems involving blue-green algae (cyanobacteria).
Download or read book Agricultural Research and Research Education written by United States. Congress. House. Committee on Agriculture. Subcommittee on Department Investigations, Oversight, and Research and published by . This book was released on 1977 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Directions for Biosciences Research in Agriculture written by National Research Council and published by National Academies Press. This book was released on 1985-01-01 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authored by an integrated committee of plant and animal scientists, this review of newer molecular genetic techniques and traditional research methods is presented as a compilation of high-reward opportunities for agricultural research. Directed to the Agricultural Research Service and the agricultural research community at large, the volume discusses biosciences research in genetic engineering, animal science, plant science, and plant diseases and insect pests. An optimal climate for productive research is discussed.
Download or read book Federal Register written by and published by . This book was released on 1978-03 with total page 1938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symbiotic Nitrogen Fixation written by P. Graham and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.
Download or read book Biological Nitrogen Fixation written by John Raymond Postgate and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New and Future Developments in Microbial Biotechnology and Bioengineering written by Jay Shankar Singh and published by Elsevier. This book was released on 2019-03-19 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and Future Developments in Microbial Biotechnology and Bioengineering: Microbial Biotechnology in Agro-environmental Sustainability describes, in detail, the various roles of microbial resources in the management of crop diseases and how microbes can be used as a source of income for biomass and bioenergy production. In addition, the book covers microbial inoculants as bio-fertilizers to enhance crop productivity, along with degraded land restoration. Users will find the latest information in the field of microbial biotechnology and its further applications in bio-fertilizers, bio-pesticides, its generation as an alternative source of energy, restoration degraded and marginal lands, the mitigation of global warming gases, and more. - Describes microbial biotechnology and its applications in sustainable agriculture - Provides information on the use of a variety of microbes for crop production - Outlines microbe-based separation techniques for the removal of metal contaminants from soil - Describes the role of microbial agents in the generation of alternative sources of energy - Includes microbial tools and technologies for the restoration of degraded and marginal lands, the mitigation of global warming gases, and the bioremediation of polluted sites
Download or read book Biological Nitrogen Fixation for Sustainable Agriculture written by J.K. Ladha and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical fertilizers have had a significant impact on food production in the recent past, and are today an indispensable part of modern agriculture. On the other hand, the oil crisis of the 1970s and the current Middle East problems are constant reminders of the vulnerability of our fossil fuel dependent agriculture. There are vast areas of the developing world where N fertilizers are neither available nor affordable and, in most of these countries, balance of payment problems have resulted in the removal of N fertilizer subsidies. The external costs of environmental degradation and human health far exceed economic concerns. Input efficiency of N fertilizer is one of the lowest and, in turn, contributes substantially to environmental pollution. Nitrate in ground and surface waters and the threat to the stability of the ozone layer from gaseous oxides of nitrogen are major health and environmental concerns. The removal of large quantities of crop produce from the land also depletes soil of its native N reserves. Another concern is the decline in crop yields under continuous use of N fertilizers. These economic, environmental and production considerations dictate that biological alternatives which can augment, and in some cases replace, N fertilizers must be exploited. Long-term sustainability of agricultural systems must rely on the use and effective management of internal resources. The process of biological nitrogen fixation offers and economically attractive and ecologically sound means of reducing external nitrogen input and improving the quality and quantity of internal resources. In this book, we outline sustainability issues that dictate an increased use of biological nitrogen fixation and the constraints on its optimal use in agriculture.
Download or read book Research Grants Index written by National Institutes of Health (U.S.). Division of Research Grants and published by . This book was released on 1975 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Awards Index written by and published by . This book was released on 1982 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nitrogen Fixation and its Research in China written by Guo-Fan Hong and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen Fixation by symbiotic organisms is considered an important contribution to the solution of food problems throughout the world. For manyyears, Chinese scientists have focused their research in this area. Today more than half of the total nitrogen fertilizers applied are from biological fixation sources. The editor is an international renowned scientist at the Chinese Academy of sciences. He has brought together contributions from various research fields in China and Europe.Together they present the state-of-the-art in nitrogen-fixation research. The studies range from actino- mycete fixation induced in various genera andspecies of plants, mechanisms and chemical modeling of enzyme systems togenetical engineering of organisms.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1981 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Approaches to Regenerative Soil Systems written by Norman Uphoff and published by CRC Press. This book was released on 2023-10-27 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture in the 21st century will need considerable modification to remain both productive and sustainable. Greater production is needed to meet the needs of our still-growing populations and to combat hunger and poverty. Declines in soil health and the pollution of water sources are making many of our production systems less tenable. These adverse trends are exacerbated more and more by the impacts of climate change. There are, fortunately, alternative methods available for agricultural practice that can countervail these constraints. Biological Approaches to Regenerative Soil Systems brings together the work of both researchers and practitioners to map out better approaches to contemporary agriculture that draw upon both old and new knowledge. It presents the science that underlies more biologically driven strategies as well as contemporary innovative experiences in diverse parts of the world. Both accepted research and these varied experiences encourage confidence that these approaches, not relying primarily on the introduction of new varieties and on exogenous inputs, can succeed. This book updates and revises a preceding volume Biological Approaches to Sustainable Soil Systems published by CRC Press in 2006. So much has been learned and done on this subject in the past decade and a half that a second edition was warranted. For instance, the first edition was published, knowledge about plant-soil microbiomes, which are a frequent focus in this book, has mushroomed. Because sustainability is a broad term and an end-state, the editors preferred to assemble expertise regarding regenerative agriculture, which is concerned with the means for achieving sustainability. The concept of regenerative soil systems, entities that are more complex and multifaceted than "soil" alone, also incorporates a concern with having more resilient agricultural systems, ones that are better able to cope with the multiple stresses of climate change that are foreseen for the decades ahead. The book’s chapters representing a wide range of disciplines were contributed by 84 scientists and practitioners from 20 countries. Although they come from persons with in-depth knowledge of their respective fields, the chapters are written to be accessible to readers who are not trained in the specialized subjects. Taken together, the chapters provide students, researchers, practitioners, planners, and policy makers with a comprehensive understanding of both the science and the steps needed to regenerate and sustain soil systems around the world for the long-term benefit of humankind and the environment.
Download or read book Directory of Research Grants 2008 written by Schoolhouse Partners Llc and published by AuthorHouse. This book was released on 2008-05 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was the 50s and life was simple, until September 25, 1954. That was the night that would be etched in the memory of the citizens of Stanfield, Massachusetts. The Chief of Police described the brutal savagery of the double homicide as "the most atrocious crime in the history of the city." A fourteen-year-old girl, and the four-year-old boy in her care were murdered at the hands of a deranged, depraved killer. A Thread of Evidence places the reader at the scene of the crime, an eye witness to the senseless stabbing of two innocent children. With a piece of crochet thread as their only clue, the entire police department, lead by detectives Steven Logan and Raymond Gage, scour the city in search of a maniacal savage. When all tips and leads have been exhausted, they review all evidence. They come back to the thread. The only real evidence. With tenacity and perseverance of Logan and Gage the killer is apprehended. The reader experiences the twists and turns of the investigation, and ultimately occupies a reserved seat in the Superior Court as the trial proceedings commence. A Thread of Evidence has been written as fiction, but inspired by an actual event. Fifty years later, it remains etched in the minds of all who had lived in the area. The author has researched court records, newspapers, interviewed neighbors, police and has drawn on personal recollections of the crime. The story has been recounted over and over and to this day, it continues to be discussed. A Thread of Evidence is a compelling account of superb detective work, and unprecedented dedication of an entire police department.
Download or read book Agriculture rural development and related agencies appropriations for fiscal year 1982 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Agriculture, Rural Development, and Related Agencies and published by . This book was released on 1981 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems written by Ladha and published by Int. Rice Res. Inst.. This book was released on 1995-09-14 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table 1. Global allocation of arable land between different com modities Globally, cereal cropping dominates cultivated land Commodities' Proportion of land area use (around 50% of total area, Table 1). The remain (%) ing arable land is used for production of oilseed, fibre, or food and cash crops. In addition, vast areas are Cereals maintained under temporary or permanent pasture for Wheat 16 forage production (2-3 fold greater than the total area Rice 10 under cultivation and permanent crop; Table 1, Fig. Maize 9 1). All cultivated crops, except for legumes (pulses All other cereals 13 and legume oil seeds) require the soil to provide rel Total 48 atively large amounts of nitrogen (N). It is necessary for the three most important cereals, wheat (Triticum Legumes aestivum), rice (Oryza sativa) and maize (Zea mays), Legume pulses 5 to take up 20 to 40 kg soil N ha -lover a period of 3 Legume oilseeds 6 to 5 months to satisfy the N requirements of the seed and supporting vegetative structure for each tonne of Total II grain produced (e. g. Fig. 2; Myers, 1988). Produc tive pastures on the other hand may assimilate> 100 Other crops I kg N ha- each annum, of which 50 to 90% will be Other oilseeds 6 consumed by livestock in intensively grazed systems Beverages / Tobacco 7 (Ledgardy, 1991; Thomas, 1995).
