Download or read book Microbiology of Tropical Soils and Plant Productivity written by Y.R. Dommergues and published by Springer Science & Business Media. This book was released on 1982-11-30 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is an established fact that we must continually increase and improve agricultural production if we are to meet even the minimum requirements of a growing popu lation for food, shelter, and fuel. In recent years, the introduction of new plant varieties and the extensive use of fertilizers have effectively increased crop yields, but intensifying agricultural methods has often led to depleting soil fertility. Two examples of the harmful consequences of intensive farming practices are the loss of up to 2.5 cm of topsoil every 15 years in the United States through erosion and the alarming rise in environmental pollution through widespread use of pesticides. Countless other processes affecting the activity of soil micro flora and the inter actions between microorganisms and plants may pose an equal danger to soil equilibrium, but their potential hazards are often overlooked because of an insufficient understanding of soil microbiology on the part of scientists. In the first published study of its kind, the authors of this book have attempted to address major aspects of the microbial activity of soil in the tropics. Tropical conditions serve as an ideal context for a discussion of soil microbiology, since biological processes in the soil are particularly active in tropical environments in comparison to other settings and in relation to physical and chemical processes.

Download or read book Azolla Biofertilizer for Sustainable Rice Production written by Sadasivam Kannaiyan and published by Daya Books. This book was released on 2005 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book entitled Azolla Biofertilizer for Sustainable Rice Production contains the valuable informations from the vast experiences of the authors Professor Dr S Kannaiyan and Dr K Kumar in the field of Azolla-Anabaena symbiosis for the past 25 years. It is written with the objective of providing basic knowledge and practical technologies on the effective utilization of Azolla as an ecofriendly and economically viable biofertilizer for sustainable rice production. It gives an access to the latest informations on the biology of Azolla, growth, sporulation, N2 fixation, ammonia assimilation and mineralization process in rice ecosystem. It offers a good deal of practical technologies for maximum exploitation of the potential status of Azolla biofertilizer viz., mass production techniques of fresh biomass, sporocarp inoculum, carrier based immobilized cyanobacterial inoculant, field application and methods for enhancing N use efficiency of this technology. It also covers the utilty of Azolla as supplemental animal feed and the economics of usage of Azolla as biofertilizer for rice. Illustrative colour photographs have been included in various chapters for easy understanding of the subject by readers. This book will be very useful for the scientists, researchers, postgraduate students, extension workers and voluntary organizations involved in the crop management technology for sustainable rice production. Contents Chapter 1: Azolla Biofertilizer: Potentials and Prospects; Chapter 2: Biological Fertilizers for Sustainable Crop Production in Rice Based System; Chapter 3: Origin of Azolla Cultivation; Chapter 4: Taxonomy and Morphological Characters of Azolla; Chapter 5: Biodiversity of Azolla and its Algal Symbiont Anabaena azollae as Revealed by Molecular and Immunological Studies; Chapter 6: Growth Rate and Doubling Time of Azolla; Chapter 7: Molecular Biology and Ultrastructures of Azolla Anabaena Symbiosis; Chapter 8: Algal Symbionts of Azolla; Chapter 9: Nutrition of Azolla; Chapter 10: Factors Influencing the Growth of Azolla; Chapter 11: Nitrogen Fixation by Azolla; Chapter 12: Assimilation of Carbon and Nitrogen in the Symbiotic Association of Azolla Anabaena System; Chapter 13: Sporulation Process in Azolla and Sporocarp Technology for Rice; Chapter 14: Azolla as Biofertilizer for Rice; Chapter 15: Immobilization of Cyanobacteria in Solid Matrix; Chapter 16: Ammonia Production by the Immobilized Cyanobacteria for Rice Crop; Chapter 17: Production and Application of Azolla Fresh Biomass and Sporocarp Inoculum for Rice; Chapter 18: Nitrification Inhibitors with Azolla on Nitrogen Use Efficiency in Rice Crop; Chapter 19: Pests of Azolla; Chapter 20: Black Rot Disease Interactions and Nitrogen Fixation in Azolla; Chapter 21: Azolla as Animal Feed; Chapter 22: Economic Analysis of Azolla Use.

Download or read book Azolla Utilization written by and published by Int. Rice Res. Inst.. This book was released on 1987 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CRC Handbook of Symbiotic Cyanobacteria written by Amar Nath Rai and published by CRC Press. This book was released on 2018-05-04 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: In one convenient source, this ready reference brings together for the first time, all the information available on various cyanobacterial symbioses/symbiotic cyanobacteria. Comprehensive data on structure, physiology, biochemistry and molecular biology of the cyanobiont in various cyanobacterial symbioses is included. Aplied aspects such as use of Azolla in rice cultivation and artificial symbioses are addressed, along with a chapter dedicated to methodology. This informative new text is useful to researchers, teachers, and students.

Download or read book Symbiosis written by Surindar Paracer and published by Oxford University Press. This book was released on 2000-07-06 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this book, published by University Press of New England in 1986, sold over 2500 copies, and was received as the best introductory overview of this broad field. Quite a lot has happened in the field of symbiosis in the past 10 years, especially concerning molecular mechanisms. Ahmadjian and Paracer have thoroughly updated their book, addressing advances in the field and the emergence of fields such as cellular microbiology, immunoparasitology, and endocytobiology, which have revealed new aspects of symbiosis. It is the only book to cover all aspects of symbiosis at an introductory level.

Download or read book Practical Application of Azolla for Rice Production written by W.S. Silver and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of rice has increased considerably in recent years due to the release of improved varieties and the adoption of better fertilization practices. Nevertheless, the production and use of inorganic N fertilizer involves costly investments in terms of energy and transport, the need for complex manufacturing plants, as well as the potential for environmental pollution. The use of agricultural systems that include dinitrogen fixing organisms appears to be an economically sound cultural practice. In the particular case of rice, biological nitrogen fixation by Azolla, blue-green algae (BGA), and heterotrophic microorganisms has long been recognized, in southeast Asia, as a fertilizer for rice culture. The Azolla-Anabaena association has the unique property of being able to retain a significant amount of nitrogenase activity in the presence of combined nitrogen, making the system compatible with inorganic nitrogen fertilization. Researchers working with Azolla (N fixation) are dispersed in 2 countries of southeast Asia, Africa, Europe and Latin America, making it difficult to share ideas, concepts and research results on a more personal basis. Considering the potential positive impact of growing rice in association with Azolla, and the lack, to date, of an international gathering of scientists dedicated to Azolla research, the First International Workshop on "Practical Applications of Azolla for Rice Production" was organized by the University of Puerto Rico-Mayaguez Campus.

Download or read book The Ecology of Cyanobacteria written by B.A. Whitton and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyanobacteria make a major contribution to world photosynthesis and nitrogen fixation, but are also notorious for causing nuisances such as dense and often toxic `blooms' in lakes and the ocean. The Ecology of Cyanobacteria: Their Diversity in Time and Space is the first book to focus solely on ecological aspects of these organisms. Its twenty-two chapters are written by some thirty authors, who are leading experts in their particular subject. The book begins with an overview of the cyanobacteria - or blue-green algae, for those who are not specialists - then looks at their diversity in the geological record and goes on to describe their ecology in present environments where they play important roles. Why is one of the key groups of organisms in the Precambrian still one of the most important groups of phototrophs today? The importance of ecological information for rational management and exploitation of these organisms for commercial and other practical purposes is also assessed. Accounts are provided of nuisances as well as the ecology of the commercially successful Spirulina and the role of cyanobacteria in ecosystem recovery from oil pollution. Many chapters include aspects of physiology, biochemistry, geochemistry and molecular biology where these help general understanding of the subject. In addition there are three chapters dealing specifically with molecular ecology. Thirty-two pages of colour photos incorporate about seventy views and light micrographs. These features make the book valuable to a wide readership, including biologists, microbiologists, geologists, water managers and environmental consultants. The book complements the highly successful The Molecular Biology of Cyanobacteria already published by Kluwer.

Download or read book Molecular Biology Of Symbiotic Nitrogen Fixation written by Peter M. Gresshoff and published by CRC Press. This book was released on 2018-01-18 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: The core of the text is aimed at the research worker in the field of nitrogen fixation, but, despite its specialisation, does not lose the emphasis on teaching, both as a direct reference book and as a backbone for a graduate course on the subject.The closing part of the book includes a subject index and a glossary of terms. The latter was included not for the expert, for whom many of the definitions will be too general, but for the newcomer; the author hopes that the quick survey of key terms will help in the reading of this book.

Download or read book Plant and Soil Interfaces and Interactions written by A. van Diest and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forty years ago, when PLANT AND SOIL first appeared, Europe was still recovering from the devastating effects of World War II. During the war years, work in many centres of agricultural research had come to a virtual standstill. Buildings and equipment were destroyed, scientists were often forced to terminate their research and teaching activities and funds allocated to such work were diverted to other, at that time, more pressing needs. During the first post-war years reconstruction was undertaken with great zeal and in that light the founding of the new journal PLANT AND SOIL must be viewed. In the pre-war period most agricultural science journals were still primarily national ones and consequently many articles were published in languages mastered by only a limited number of potential readers. In small countries whose languages are not widely understood, the desire arose to publish research findings in one of the major languages. It is therefore understandable that in the early years of the journal's existence, large portions of PLANT AND SOIL were filled with articles from the Scandinavian countries and The Nether lands. Originally, rather frequent use was made of the opportunity to publish also in German and French, but with the advance of English as a major language of communication, a decline was noticeable in the number of German and French manuscripts submitted. As a consequence the Edi torial Board has recently decided to terminate the publishing of articles in these languages.

Download or read book Nitrogen Fixation with Non Legumes written by F.A. Skinner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 4th International Symposium on Nitrogen Fixation with Non-Legumes, Rio de Janeiro, Brazil, August 23-28, 1987

Download or read book Advances In Plant Physiology Vol 4 written by A. Hemantaranjan and published by Scientific Publishers. This book was released on 2002-07-01 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researches have made tremendous progress in the area of Plant Physiology, greatly increasing our understanding of living processes, necessary for biotechnological research. Different volumes of the treatise ``Advances in Plant Physiology'' covers the entire spectrum of Plant Physiology including the Plant Molecular Biology in order to encourage meaningful research in the coming twenty-first century. The true endeavor in this direction is the result of comprehensive, authoritative and timely publication of this valuable treatise, provides the reader with the most recent information, views and references focused on individual topics through a rich collection of reviews contributed by pioneer workers and of those actively engaged in the studies of various specific areas in different parts of the world with extensive experience, established record of eminence and noted authorities. In fact, this treatise is a treasure for interdisciplinary exchange of information and the approach to topic ranges from theoretical to applied molecular to organismic and single to multivariable systems. Apart from fulfilling the need of this treatise for research teams and scientists actively working in the areas of plant physiology biochemistry and plant molecular biology in universities institutes and research laboratories throughout the world, it would be extremely a useful book and a voluminous reference material for acquiring advanced knowledge by students in response to innovative courses in Plant Physiology, Plant Biochemistry, Agronomy, Genetics and Plant Breeding, Genetic Engineering, Microbiology, Plant Biotechnology and Botany. Over eighteen (18) chapters of Vol. 1 extensively elucidate the needful topics of Biological Nitrogen Fixation, Plant Cell and Tissue Culture, Plant Metabolism , certain rare Techniques in Plant Physiology, Herbicides Physiology, Plant Growth Regulators, Physiology of Rooting, Tree Physiology, Stress Physiology (in part) and Growth and Development Hopefully, Vol. II will comprise other important topics.

Download or read book Advances in Nitrogen Fixation Research written by C. Veeger and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: As for the preceding four International Symposia on Nitrogen Fixation, held in Pullman, Washington USA (1974); Salamanca, Spain (1976); Madison, Wisconsin, USA (1978); and Canberra, Australia (1980), the 5th Symposium held from August 28 - September 3, 1983 in Noordwijkerhout, The Netherlands, received the gene rous support of the Charles F. Kettering Foundation Research Laboratory and the Tennessee Valley Authority. This support has helped research progress in this broad field of science by offering a forum both for the exchange of ideas and for scientific summary and discussion as captured over the last 10 years in each of the four books published previously. Although all previous meetings were well attended, the present conference was the largest so far. 550 scien tists from 60 different countries attended the "Leeuwenhorst Conference", re presenting the many different disciplines actively involved in research in this field: chemists, biochemists, molecular biologists, geneticists, microbiologists, plant physiologists, agriculturalists. A large number of them had to go through a difficult period to raise the necessary funds to attend. In addition, a parallel meeting of "policymakers" from Southeast Asia, Africa and South America was held under the auspices of Crosscurrents International Institute, Dayton, OR, USA and the United Nations University, Tokyo, Japan. These participants attended some of the scientific sessions to benefit from the vision of a number of scientists at the symposium.

Download or read book World Weeds written by LeRoy Holm and published by John Wiley & Sons. This book was released on 1997-03-05 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Responsible for a high proportion of the world's crop losses, weedstake away food that the world badly needs. They decrease thequality and quantity of vegetable fibers, wool, and hides, andinterfere with fishing, irrigation, hydroelectric power production,and the movement of shipping vessels. In order to recognize thetrue magnitude of the weed problem, and to be better equipped todesign effective weed control methods, it is vital to identify andlearn as much as possible about the many different species of thisdestructive agricultural predator. The culmination of four decades of global research, World Weedspresents comprehensive and up-to-date information on over 100weeds--addressing recent changes in such areas as crop tillagemethods, herbicide use, and agricultural runoff. This monumentalwork, featuring a wealth of original data from the authors,provides extensive coverage of the known biology of each species.Each entry contains a full botanical description, plus importantdetails on habitat requirements and distribution, seed production,ecology, physiology, crop impact, and more. Generously suppliedwith dozens of unique illustrations and species distribution mapscovering over 100 countries, this definitive resource boasts anextensive multilingual index of common names, and a massivebibliography with over 3,000 references to facilitate furtherreading and research. World Weeds is a truly masterful referencethat will be celebrated by weed and crop scientists, botanists, andothers for years to come.

Download or read book Nitrogen Fixation written by M Polsinelli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth International Symposium on Nitrogen Fixation with Non-legumes was held in Florence (Italy) on 10-14 September, 1990. Earlier Symposia of this series were held in Piracicaba (Brazil), Banf Alberta (Canada), Helsinki (Finland) and Rio De Janeiro (Brazil). The Symposium's main objectives were to bring together scientists working in many different fields of nitrogen fixation, to stimulate discussion on this important process and to have an appraisal of the most recent studies concerning nitrogen fixation with non-legumes. The Symposium was attended by 230 scientists from 32 different countries. This volume collects the contributions of 65 lectures and 87 posters, which are an up-to-date account of the state of knowledge on biological nitrogen fixation with non-legumes. The book provides a valuable reference source not only for specialists in nitrogen fixation, but also for researchers working on related aspects of agronomy, biochemistry, genetics, microbiology, molecular biology and plant physiology. It is with great pleasure that we aknowledge the contributions of the authors in assuring the prompt pubblication of this volume. We would also like to express our thanks to Kluwer Academic Publishers B.V. for the publication of these Proceedings. M. Polsinelli R. Materassi M. Vincenzini ORGANIZING COMMITTEE President M. Polsinelli M. Vincenzini Secretary F. Favilli Treasurer E. Galli E. Gallori L. Giovannetti R. Materassi M.P. Nuti M.R. Tredici SCIENTIFIC COMMITTEE M. Bazzicalupo Florence, Italy H. Bothe Cologne, West Germany R.H. Burris Madison, U.S.A.

Download or read book Agro Environmental Sustainability written by Jay Shankar Singh and published by Springer. This book was released on 2017-02-14 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume work is a testament to the increasing interest in the role of microbes in sustainable agriculture and food security. Advances in microbial technologies are explored in chapters dealing with topics such as carbon sequestration, soil fertility management, sustainable crop production, and microbial signaling networks. Volume I is a collection of research findings that invites readers to examine the application of microbes in reinstating degraded ecosystems and also in establishing sustainable croplands. Highly readable entries attempt to close the knowledge gap between soil microbial associations and sustainable agriculture. An increase in the global population with changing climate is leading to environments of various abiotic and biotic stresses for agricultural crops. It therefore becomes important to identify the techniques to improve soil fertility and function using different microbial groups such as actinobacteria, microalgae, fluorescent pseudomonads and cyanobacterial systems. These are examined in this volume in greater detail. This work is a significant contribution to research in this increasingly important discipline, and will appeal to researchers in microbiology, agriculture, environmental sciences, and soil and crop sciences.

Download or read book The Changing Scenario in Plant Sciences written by and published by Allied Publishers. This book was released on 2000 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Cyanobacteria written by T. A. Sarma and published by CRC Press. This book was released on 2012-12-18 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook acquaints readers with the exciting developments in various areas of cyanobacterial research in the backdrop of the publication of complete genome sequence of the cyanobacterium Synechocystis sp. strain PCC 6803 in 1996. It begins with a summary of the current knowledge on the taxonomy, phylogeny and evolution of cyanobacteria followed by the sequenced genomes, differentiation of akinetes and heterocyst. The book considers mechanisms of cellular movements (gliding, swimming and twitching motions) exhibited by various cyanobacteria in order to adjust to their environmental niches and the operation of the circadian rhythms. It covers cyanobacterial symbiosis, cyanophages and cyanobacterial toxins, followed by a discussion on stress responses (salinity, temperature, desiccation and oxidation). A comprehensive account on the developments in all these spheres has been presented in a lucid style with the required background information, molecular techniques employed and models proposed. This handbook constitutes the first such book written by a single author at a level and depth for graduate and research students in botany and microbiology.