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Author : Rosenani A. B.
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (969 download)
Download or read book Effect of Azolla Green Manure on Wetland Rice and Availability of the Azolla-N written by Rosenani A. B. and published by . This book was released on 1994 with total page 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 : Mustafizur Rahman
Publisher : Springer Science & Business Media
ISBN 13 : 9401586705
Total Pages : 244 pages
Book Rating : 4.4/5 (15 download)
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.
Author : N. S. Subba Rao
Publisher : Cambridge University Press
ISBN 13 : 9780521417532
Total Pages : 376 pages
Book Rating : 4.4/5 (175 download)
Download or read book Current Developments in Biological Nitrogen Fixation written by N. S. Subba Rao and published by Cambridge University Press. This book was released on 1984 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the most recent advances in biological nitrogen fixation, with chapters written by experts on the ecology, physiology, biochemistry and genetics of biological nitrogen fixation.
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 : International Rice Research Institute
Publisher : IRRI
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4./5 ( download)
Download or read book Green Manure in Rice Farming written by International Rice Research Institute and published by IRRI. This book was released on 1988 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W.S. Silver
Publisher : Springer
ISBN 13 : 9789400962033
Total Pages : 227 pages
Book Rating : 4.9/5 (62 download)
Download or read book Practical Application of Azolla for Rice Production written by W.S. Silver and published by Springer. This book was released on 2011-10-19 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 : 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 :
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9712202321
Total Pages : 388 pages
Book Rating : 4.7/5 (122 download)
Download or read book Sustainable Agriculture Green Manure in Rice Farming written by and published by Int. Rice Res. Inst.. This book was released on with total page 388 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 : International Network on Soil Fertility and Fertilizer Evaluation for Rice. Meeting
Publisher : Int. Rice Res. Inst.
ISBN 13 : 971104174X
Total Pages : 267 pages
Book Rating : 4.7/5 (11 download)
Download or read book Efficiency of Nitrogen Fertilizers for Rice written by International Network on Soil Fertility and Fertilizer Evaluation for Rice. Meeting and published by Int. Rice Res. Inst.. This book was released on 1987 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhu Zhao-liang
Publisher : Springer Science & Business Media
ISBN 13 : 9401156360
Total Pages : 344 pages
Book Rating : 4.4/5 (11 download)
Download or read book Nitrogen in Soils of China written by Zhu Zhao-liang and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of soil nitrogen has long been an active field, but it was generally pivoted on agricultural and forestry production, and animal husbandry. With the rapid increase in the use of fertilizer nitrogen, more attention has been paid to the rela tionship between nitrogen management and environmental quality and human of soil nitrogen has become more comprehensive with health. In addition, the study the development of related sciences. The quantitative study of the processes in nitrogen cycling and their interrelationships has been an important part of this project and has attracted the attention of scientists allover the world. Nitrogen is one of the most important nutrients for plant growth and the applica tion of fertilizer nitrogen is playing an important role in agricultural production. The annual consumption of fertilizer nitrogen in the world has reached 70 million tons, and China has an annual consumption of more than 15 million tons and is the largest fertilizer nitrogen consumer in the world. However, the efficiency of nitro gen fertilizer is low and losses are large. It is estimated that nitrogen losses from agriculture in our country can be as high as 40-60% of the nitrogen applied. Some of the lost nitrogen enters the atmosphere and contributes to the greenhouse effect and some enters water bodies to pollute the water.
Author : S. Kannaiyan
Publisher : Scientific Publishers
ISBN 13 : 9386347423
Total Pages : 472 pages
Book Rating : 4.3/5 (863 download)
Download or read book Biofertilizers Technology written by S. Kannaiyan and published by Scientific Publishers. This book was released on 2010-04-01 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice based cropping system is the major cropping system practised in India which includes the rotation of crops involving rice, pulses, oil seeds, cotton, sugar cane, green manures etc., The rice based cropping system offers lot of scope for the effective utilization of a wide range of biofertilizers such as Azolla, BGA, Azospirillum, Rhizobium Gluconacetobacter diazotrophicus and other heterotrophic N2 fixing bacteria which help to increase the yield by reducing the cost of cultivation. It thus has dual advantages of being sustainable without endangering the environment and being highly cost effective. This book ‘Biofertilizer Technology for Rice Based Cropping System’ deals with the current developments in the basic and applied aspects of biofertilizers used in the rice based cropping including the novel endophytic diazotrophs viz., Azorhizobium caulinodans, Gluconacetobacter diazotrophicus, Pink Pigmented Facultative Methylotrophs (PPFM) etc. The role of P, Zn and Si solubilizers in the nutrient dynamics of the rice ecosystem has also been covered. The strategies for production and distribution of quality inoculants for rice based cropping system has been given due importance with a focus on the molecular approaches for rapid and reliable quality control of biofertilizers. This book can be considered as a monograph on the usage of biofertilizers in rice based cropping system. It will be very useful for the scientists, researchers, students and extension workers involved in the management of crops in rice based cropping system .
Author : S. Kannaiyan
Publisher : Alpha Science Int'l Ltd.
ISBN 13 : 9781842650998
Total Pages : 400 pages
Book Rating : 4.6/5 (59 download)
Download or read book Biotechnology of Biofertilizers written by S. Kannaiyan and published by Alpha Science Int'l Ltd.. This book was released on 2002 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is written with the objective of covering the basic issues in biological nitrogen fixation such as: the physiology, biochemistry and molecular genetics of nitrogen fixation; and the role of signal molecules and host gene expression in nodulation and nitrogen fixation. The book also details recent developments in biofertilizer technology, such as: the immobilization of cyanobacteria; endophytic nitrogen fixation; and solubilization and mobilization of nutrients by phosphobacteria and VA mycorrhiza and their role as bioinoculants.
Author : J.K. Ladha
Publisher : Springer Science & Business Media
ISBN 13 : 9401709106
Total Pages : 212 pages
Book Rating : 4.4/5 (17 download)
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.
Author : Sadasivam Kannaiyan
Publisher : Springer Science & Business Media
ISBN 13 : 9781402002199
Total Pages : 426 pages
Book Rating : 4.0/5 (21 download)
Download or read book Biotechnology of Biofertilizers written by Sadasivam Kannaiyan and published by Springer Science & Business Media. This book was released on 2002-11-30 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents
Author :
Publisher : Int. Rice Res. Inst.
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4./5 ( download)
Download or read book International Rice Research Notes Vol 13 No 4 written by and published by Int. Rice Res. Inst.. This book was released on with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
