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Author :
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9711041790
Total Pages : 305 pages
Book Rating : 4.7/5 (11 download)
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:
Author : Junoo Kamal Tuladhar
Publisher : Cuvillier Verlag
ISBN 13 : 3898739740
Total Pages : 130 pages
Book Rating : 4.8/5 (987 download)
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.
Author : W.S. Silver
Publisher : Springer Science & Business Media
ISBN 13 : 9400962010
Total Pages : 227 pages
Book Rating : 4.4/5 (9 download)
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.
Author :
Publisher : Erik Sjödin
ISBN 13 : 9198068601
Total Pages : 51 pages
Book Rating : 4.1/5 (98 download)
Download or read book The Azolla Cooking and Cultivation Project written by and published by Erik Sjödin. This book was released on 2012 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Om ett konstprojekt med mossbräknar.
Author : K.S. Kumarasinghe
Publisher : Springer Science & Business Media
ISBN 13 : 9401116814
Total Pages : 156 pages
Book Rating : 4.4/5 (11 download)
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.
Author : Sadasivam Kannaiyan
Publisher : Daya Books
ISBN 13 : 9788170353560
Total Pages : 480 pages
Book Rating : 4.3/5 (535 download)
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.
Author : Karl Georg Gutbrod
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.E/5 ( download)
Download or read book Effect of Azolla on Irrigated Rice in Brazil written by Karl Georg Gutbrod and published by . This book was released on 1987 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Azolla green manure effect on paddy rice was compared to N fertilization with urea in 4 cultivation systems at two sites in Brazil, during the seasons 1983/84 and 1984/85. Fertilizer nitrogen equivalence was calculated by plotting parameter values obtained in Azolla treatments on the response regressions to N fertilization.
Author : Gordon V. Johnson
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.3/5 (121 download)
Download or read book Evaluation of Salt Tolerence in Azolla written by Gordon V. Johnson and published by . This book was released on 1986 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Muhammad Manzoor Khan
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.E/5 ( download)
Download or read book Azolla Agronomy written by Muhammad Manzoor Khan and published by . This book was released on 1988 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chanan Singh Johal
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.E/5 ( download)
Download or read book Studies on the Utilization of Azolla-anabaena Symbiosis by Flooded Rice written by Chanan Singh Johal and published by . This book was released on 1986 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Penelope Eve Kellar
Publisher :
ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.:/5 (13 download)
Download or read book A Study of Growth and Nitrogen-fixation in Azolla Filiculoides Var. Rubra (R. Br.) Stasb. in Lake Ngahewa, New Zealand written by Penelope Eve Kellar and published by . This book was released on 1978 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (89 download)
Download or read book Growing and Collecting Azolla Spores written by and published by . This book was released on 1987 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eda Lim
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (2 download)
Download or read book An Assessment of Azolla Variability in High Temperature Resistance written by Eda Lim and published by . This book was released on 1985 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Rice Research Institute. Library and Documentation Center
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.E/5 ( download)
Download or read book International Bibliography on Azolla written by International Rice Research Institute. Library and Documentation Center and published by . This book was released on 1979 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Eli Duncan
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (89 download)
Download or read book Development of Microsporangia in Azolla Filiculoides written by Robert Eli Duncan and published by . This book was released on 1936 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Eli Duncan
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (89 download)
Download or read book A Cytological Study of Sporangium-development in Azolla Filiculoides written by Robert Eli Duncan and published by . This book was released on 1938 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Manzoor Khan
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.E/5 ( download)
Download or read book A Primer on Azolla Production & Utilization in Agriculture written by M. Manzoor Khan and published by . This book was released on 1983 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
