Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Isotopic Studies Of Azolla And Nitrogen Fertilization Of Rice
Download Isotopic Studies Of Azolla And Nitrogen Fertilization Of Rice full books in PDF, epub, and Kindle. Read online Isotopic Studies Of Azolla And Nitrogen Fertilization Of Rice ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Isotopic Studies of Azolla and Nitrogen Fertilization of Rice by : K.S. Kumarasinghe
Download or read book Isotopic Studies of Azolla and Nitrogen Fertilization of Rice written by K.S. Kumarasinghe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is the most limiting element for crop production. Traditionally, expensive commercial fertilizers are used to correct soil nitrogen deficiencies. Indeed, 50% of the increase in rice yields after World War II can be attributed to increased fertilizer nitrogen use. Although an increased rate of fertilizer nitrogen application has been advocated to meet the growing demand for food, it is unrealistic to advise the farmers to apply fertilizers they could hardly afford, and whose prices are likely to escalate in the years ahead. In addition, when they are not applied judiciously there are problems of environmental pollution as plants are capable of taking up only a relatively small portion of the applied nitrogen, a substantial amount being lost through various chemical and biological processes. The exploitation of cheaper alternatives or supplements to fertilizers have therefore gained much interest in recent years. Our increased interest in biological nitrogen fixation as a supplement or alternative to nitrogen fertilizers led to the convening of a consultants' meeting on `The Role of Isotopes in Studies on Nitrogen Fixation and Nitrogen Cycling by Blue-Green Algae and the Azolla-Anabaena azollae Association', in Vienna from 11--15 October 1982. The consultants' group recommended that the Joint FAI/IAEA Division of Nuclear Techniques in Food and Agriculture embark on a coordinated research programme in this field and that initial emphasis should be placed on Azolla-Anabaena symbiosis. As a result, such a programme was initiated in 1984, which was concluded in 1989. The results and conclusions reported here are those that were generated during the five years of its operation.
Book Synopsis The Effect of Azolla on Nitrogen Use Efficiency in Rice-wheat Rotations of Nepal by : Junoo Kamal Tuladhar
Download or read book The Effect of Azolla on Nitrogen Use Efficiency in Rice-wheat Rotations of Nepal written by Junoo Kamal Tuladhar and published by Cuvillier Verlag. This book was released on 2004 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The low productivity of the rice-wheat cropping system in Nepal is associated with a low efficiency of applied mineral N in rice. The aquatic fern Azolla was used to reduce N losses via ammonia volatilization from the flooded lowland rice in farmers' field conditions in Nepal. The Azolla cover changed the floodwater chemistry, thus reducing ammonia volatilization losses. The use of Azolla in combination with Urea increased rice yields by 15% and reduced urea-N losses from 17-38% to 2-8%. A combined use of Azolla and urea is a viable option to enhance the productivity of rice-wheat systems in Nepal.
Book Synopsis Nitrogen Economy in Tropical Soils by : N. Ahmad
Download or read book Nitrogen Economy in Tropical Soils written by N. Ahmad and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen Economy in Tropical Soils presents an authoritative and comprehensive state-of-the-art review on soil/plant nitrogen inter-relationships, with special reference to tropical soils and crops in aerobic and anaerobic environments. Use of isotopically labelled nitrogen in experimentation, especially in tropical environments, and recently developed analytical techniques for soil and plant materials are presented. An important aspect is the emphasis placed on the impact of the tropical environment on nitrogen transformations in the soil environment. This book should be an excellent source of information for senior undergraduate and graduate students with interest in soil/plant nitrogen inter-relationships, and for all levels of research workers in these fields.
Book Synopsis Integrated Plant Nutrition Systems by : Raoul Dudal
Download or read book Integrated Plant Nutrition Systems written by Raoul Dudal and published by Food & Agriculture Org.. This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is structured on the main themes of the consultation: the importance of plant nutrition for meeting agricultural product requirements; soil organic matter, biomass, soil microflora and management of integrated plant nutrition systems; renewable supply of plant nutrients from natural sources and plant nutrient transfer to crops; the place and role of local and external sources of plant nutrients in cropping systems and their evaluation; plant nutrient management in farming systems and in watersheds and territories; and priorities for FAO's Integrated Plant Nutrion Systems (IPNS) programme
Book Synopsis Wassmann: Methane Emissions from PA. by : Springer
Download or read book Wassmann: Methane Emissions from PA. written by Springer and published by Int. Rice Res. Inst.. This book was released on 2001-03-22 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Fixation with Non-Legumes by : K.A. Malik
Download or read book Nitrogen Fixation with Non-Legumes written by K.A. Malik and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diazotrophic bacteria convert atmospheric nitrogen to plant-useable form and this input of nitrogen through biological fixation is of great agronomic importance. The contributions presented in this volume relate to free-living nitrogen fixers and the diazotrophs associated with plants. Symbiotic association of Frankia with non-legumes and cyanobacterial associations are also discussed. Research topics covered in this volume include the biochemistry and genetics of diazotrophs, recent developments in improvement of plant-microbe interactions and their molecular basis, the use of molecular probes in taxonomy and ecology of diazotrophs and reports on field applications, agronomic importance and improvement in methodologies for assessing their contribution to plants. This book provides valuable information not only for researchers working in the field of biological nitrogen fixation but also for biochemistry, molecular biologists, microbiologists and agronomists.
Book Synopsis Nitrogen Fixation in Tropical Cropping Systems by : Ken E. Giller
Download or read book Nitrogen Fixation in Tropical Cropping Systems written by Ken E. Giller and published by CABI. This book was released on 2001-01-01 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this book, first published in 1991 and intended for students and researchers, contains revised and updated material on the theory and practice of nitrogen fixation in tropical cropping systems. There are 15 chapters in 3 parts. Part I, Introduction, contains 5 chapters on tropical environments (climate, soils and cropping systems), nitrogen fixing organisms, the process of nitrogen fixation, assessment of the role of nitrogen fixation, and cycling of nitrogen in tropical cropping systems. Part II, Tropical crops and cropping systems, comprises 7 chapters on freeliving, root-associated and endophytic nitrogen fixing bacteria of cereal crops and grasses, cyanobacteria and Azolla as green manure for wetland rice, grain legumes, legumes as green manures and cover crops, forage legumes, understorey legumes and shade trees in plantation crops, and nitrogen fixing trees in agroforestry. Part III, optimizing nitrogen fixation, includes 3 chapters on environmental constraints, approaches to enhancement, and future impacts on nitrogen fixation in tropical agriculture. A list of common names and subject index are included.
Book Synopsis Methane Emissions from Major Rice Ecosystems in Asia by : Reiner Wassmann
Download or read book Methane Emissions from Major Rice Ecosystems in Asia written by Reiner Wassmann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice production is affected by changing climate conditions and has the dual role of contributing to global warming through emissions of the greenhouse gas methane. Climate change has been recognized as a major threat to the global environment. Because of insufficient field data, rice-growing countries face a problem when trying to comply with the United Nations Framework Convention on Climate Change stipulations to compile a national inventory of emissions and to explore mitigation options. Given the expected doubling in rice production in Asia, the need to evaluate the interaction between climate change and rice production is critical to forming a sound basis for future directions of technology developments by policy makers, agriculturists, environmentalists, rice producers, and rice consumers. The present book comprises two sections. The first part documents a comprehensive overview of the results achieved from an interregional research effort to quantify methane emission from major rice ecosystems and to identify efficient mitigation options. This research report broadens understanding of the contribution of rice cultivation to methane emissions and clarifies that emissions are relatively low, except in specific rice ecosystems, and that these high emissions could be ameliorated without sacrificing yield. The second section shows results from other projects that investigated the role of rice cultivators in field and laboratory approaches. The findings represent inputs for future modeling approaches in the role of rice cultivators. The expanded database generated by other projects is reflected in modeling efforts.
Book Synopsis Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems by : J.K. Ladha
Download or read book Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems written by J.K. Ladha and published by Int. Rice Res. Inst.. This book was released on 1995-09-30 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprinted from Plant and Soil, v.174, nos.1-2 (1995), this volume is devoted to discussions on the role of biological nitrogen fixation (BNF) in agricultural sustainability. Papers presented on BNF in crop forage and tree legumes are augmented with discussion of integrated farming systems involving BNF, soil and N management, and recycling of legume residues. BNF by non-legumes is discussed and attempts to transform cereals into nodulating plants are critically reviewed. Also described are advances in the development of new methodologies to understand symbiotic interactions and to assess N-2 fixation in the field; means of enhancing BNF through plant and soil management; breeding and selection; problems encountered in exploiting BNF under farmers' field conditions; and promising approaches to improve BNF exploitation. Lacks a subject index. Annotation copyright by Book News, Inc., Portland, OR
Book Synopsis Soil-Specific Farming by : Rattan Lal
Download or read book Soil-Specific Farming written by Rattan Lal and published by CRC Press. This book was released on 2015-08-20 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faced with challenges of resource scarcity and environmental degradation, it is important to adopt innovative farming systems that maximize resource efficiency while protecting the environment. Soil-Specific Farming: Precision Agriculture focuses on principles and applications of soil-specific farming, providing information on rapidly evolving agri
Book Synopsis Biological Nitrogen Fixation Associated with Rice Production by : Mustafizur Rahman
Download or read book Biological Nitrogen Fixation Associated with Rice Production written by Mustafizur Rahman and published by Springer Science & Business Media. This book was released on 2013-04-09 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation (BNF) has become important in rice farming systems because this process diminishes the need for expensive chemical fertilizers which have been associated with numerous health and environmental problems. The extensive exploitation of BNF would provide economic benefits to small farmers, avoiding all malign influences of chemical fertilizers. Meanwhile, advances in biotechnology have brought rice genetics to the threshold of new opportunities for increasing rice production. This volume focuses, in six different sessions, on the role of BNF in the improvement of rice production in the light of the current state of the art of BNF technology transfer and diffusion. New ideas on BNF technology in research, extension information and inoculant technology are also included, together with the socio-economic impacts of using BNF in rice farm systems.
Book Synopsis Advances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities by : Andre Bationo
Download or read book Advances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities written by Andre Bationo and published by Springer Science & Business Media. This book was released on 2007-10-16 with total page 1051 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food insecurity is a fundamental challenge to human welfare and economic growth in Africa. Low agricultural production leads to low incomes, poor nutrition, vulnerability to risk and threat and lack of empowerment. This book offers a comprehensive synthesis of agricultural research and development experiences from sub-Saharan Africa. The text highlights practical lessons from the sub-Saharan Africa region.
Book Synopsis Microbial Symbionts by : Dhanasekaran Dharumadurai
Download or read book Microbial Symbionts written by Dhanasekaran Dharumadurai and published by Elsevier. This book was released on 2022-09-25 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Symbionts: Functions and Molecular Interactions on Host focuses on microbial symbionts of plants, animals, insects and molecular methods in the identification of microbial symbionts. The book describes the molecular mechanism and interactions of symbiosis of microbiome in plants, animals and humans. It brings the latest techniques for identification, localization and functional characterization of host-associated microbes and explains the role/importance of microbial symbionts. This comprehensive reference covers a wide range of symbiotic microorganisms used for basic and advanced techniques associated with the isolation, characterization and identification of microbial symbiotic microorganisms and their functions and molecular interactions on the host. The book will also helps users plan and execute experiments with appropriate knowledge rather than experimental trial and error in a wide range of disciplines, including Microbiology, Biotechnology, Botany and Zoology. - Provides basic knowledge and working protocols for a wide range of disciplines like Microbiology, Biotechnology, Botany and Zoology - Presents the most current information in symbiotic microbiome and holobiome - Includes color photos pertaining to techniques
Author :Gudni G. Hardarson Publisher :Springer Science & Business Media ISBN 13 :9781402012372 Total Pages :238 pages Book Rating :4.0/5 (123 download)
Book Synopsis Maximising the Use of Biological Nitrogen Fixation in Agriculture by : Gudni G. Hardarson
Download or read book Maximising the Use of Biological Nitrogen Fixation in Agriculture written by Gudni G. Hardarson and published by Springer Science & Business Media. This book was released on 2003-07-31 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incorporating contributions from microbiologists, molecular biologists, plant breeders and soil scientists this volume reports the results and recommendations of an FAO/IAEA meeting of twelve experts on biological nitrogen fixation. This volume will be invaluable to scientists working on nitrogen fixation, soil microbiology, agronomy and crop production as well as farm advisers and extension specialists. Maximising the Use of Biological Nitrogen Fixation in Agriculture is unique in that it: -reviews the latest thinking on various aspects of biological nitrogen fixation technology and applications; -reviews the possibilities in enhancing nitrogen fixation in various cropping systems; -shows ways how biological nitrogen fixation can be used to enhance crop production; -considers the applicability of these technologies to small farmers in developing countries.
Book Synopsis Nitrogen Fixation with Non-Legumes by : K.A. Malik
Download or read book Nitrogen Fixation with Non-Legumes written by K.A. Malik and published by Springer. This book was released on 2012-10-13 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diazotrophic bacteria convert atmospheric nitrogen to plant-useable form and this input of nitrogen through biological fixation is of great agronomic importance. The contributions presented in this volume relate to free-living nitrogen fixers and the diazotrophs associated with plants. Symbiotic association of Frankia with non-legumes and cyanobacterial associations are also discussed. Research topics covered in this volume include the biochemistry and genetics of diazotrophs, recent developments in improvement of plant-microbe interactions and their molecular basis, the use of molecular probes in taxonomy and ecology of diazotrophs and reports on field applications, agronomic importance and improvement in methodologies for assessing their contribution to plants. This book provides valuable information not only for researchers working in the field of biological nitrogen fixation but also for biochemistry, molecular biologists, microbiologists and agronomists.
Book Synopsis Molecular Microbial Ecology of the Soil by : Gudni G. Hardarson
Download or read book Molecular Microbial Ecology of the Soil written by Gudni G. Hardarson and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain legume crops, e.g. common bean (Phaseolus vulgaris L.), and soyabeans (Glycine max L.) are amongst the main sources of protein in Africa, Asia and Latin America. Their high protein content derive from their ability, in symbiosis with Rhizobium bacteria, to fix atmospheric nitrogen. Incorporating contributions from molecular biologists, microbiologists, plant breeders and soil scientists, this volume reports the results of an FAO/IAEA Co-ordinated Research Programme (1992-1996), whose main objective was to develop molecular biological methods to study rhizobial ecology. Use of better tracking methods will help enhance biological nitrogen fixation and thus grain legume yields, while reducing their reliance on soil- and/or fertilizer-nitrogen. This volume will be invaluable to scientists working on biological nitrogen fixation, soil microbial ecology and legume production.
Book Synopsis Crop Yield Response to Deficit Irrigation by : C. Kirda
Download or read book Crop Yield Response to Deficit Irrigation written by C. Kirda and published by Springer Science & Business Media. This book was released on 1999 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses general concept and management issues of deficient irrigation practices, covering a wide range of field crops including cotton, maize, soybean, wheat, sugarcane, and the like, based on five years of field research implemented in fourteen different countries, in Latin America, Africa, Europe and Asia. Additionally, guidelines are given for experimental methodology and data analysis for evaluating crop yield response to deficient irrigation. Experimental data, discussions and cited references will be an asset not only to field irrigation engineers but also to research scientists including soil and irrigation scientists and agronomists, for whom the book would be an invaluable reference source.
