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.
Download or read book On Azolla Salvinia written by William Griffith and published by . This book was released on 1845 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Tables of Composition and Nutritional Value of Feed Materials written by Institut national de la recherche agronomique (France) and published by . This book was released on 2004 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Natural System of Botany Or A Systematic View of the Organization Natural Affinities and Geographical Distribution of the Whole Vegetable Kingdom written by John Lindley and published by . This book was released on 1836 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Natural System of Botany Or a Systematic View of the Organisation Natural Affinities and Geographical Distribution of the Whole Vegetable Kingdom written by John Lindley and published by . This book was released on 1836 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to the Natural System of Botany written by John Lindley and published by . This book was released on 1830 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Botany for Degree Students Pteridophyta Vascular Cryptogams Multi Colour Edition written by Anil Kumar and published by S. Chand Publishing. This book was released on 2006 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Degree Level Students
Download or read book An Introduction to the Natural System of Botany Or a Systematic View of the Organisation Natural Affinities and Geographical Distribution of the Whole Vegetable Kingdom Etc written by John Lindley and published by . This book was released on 1830 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Linking Research to Crop Production written by Richard C. Staples and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1941, The Rockefeller Foundation sent a team of three American agricultural scientists to Mexico to survey the pros pects for increasing grain production there. The nature of the program that was subsequently established by the Ford and Rockefeller Foundations has had a large influence upon the evolu tion of agricultural research for the developing countries, and the project grew into what is now called the Green Revolution. The Green Revolution has been vastly successful because there was abundant research and technology available to draw upon. Now the Green Revolution has evolved into a very complex program of development; the momentum has slowed; and it appears that the time has come to reconstruct the research base which underlies the cropping systems for the third world. What are some of the problems that we face? The expanding world population is taking up more living space just when land is urgently needed to feed the 6.3 billion persons projected for the year 2000. The causes of the population problem are deeply imprinted in the social pattern of most countries, and certainly there are no simple solutions in a nation unwilling to restrain population growth. The problem of population growth, and others like it, is very much a sociological problem.
Download or read book Notes from the Royal Botanic Garden Edinburgh written by and published by . This book was released on 1908 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Systematics written by Michael G. Simpson and published by Elsevier. This book was released on 2011-08-09 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Systematics is a comprehensive and beautifully illustrated text, covering the most up-to-date and essential paradigms, concepts, and terms required for a basic understanding of plant systematics. This book contains numerous cladograms that illustrate the evolutionary relationships of major plant groups, with an emphasis on the adaptive significance of major evolutionary novelties. It provides descriptions and classifications of major groups of angiosperms, including over 90 flowering plant families; a comprehensive glossary of plant morphological terms, as well as appendices on botanical illustration and plant descriptions. Pedagogy includes review questions, exercises, and references that complement each chapter. This text is ideal for graduate and undergraduate students in botany, plant taxonomy, plant systematics, plant pathology, ecology as well as faculty and researchers in any of the plant sciences. - The Henry Allan Gleason Award of The New York Botanical Garden, awarded for "Outstanding recent publication in the field of plant taxonomy, plant ecology, or plant geography" (2006) - Contains numerous cladograms that illustrate the evolutionary relationships of major plant groups, with an emphasis on the adaptive significance of major evolutionary novelties - Provides descriptions and classifications of major groups of angiosperms, including over 90 flowering plant families - Includes a comprehensive glossary of plant morphological terms as well as appendices on botanical illustration and plant description
Download or read book An introduction to the Natural System of Botany or a systematic view of the organisation of the whole vegetable kingdom etc written by John Lindley and published by . This book was released on 1830 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Students Text book of Botany written by Sydney Howard Vines and published by . This book was released on 1894 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calcutta Journal of Natural History and Miscellany of the Arts and Sciences in India written by and published by . This book was released on 1845 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Plants written by Albert Charles Seward and published by . This book was released on 1910 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A K Ghosh Commemoration Volume Proceedings of the Symposium on Evolutionary Botany and Biostratigraphy written by and published by Alexander Doweld. This book was released on with total page 751 pages. Available in PDF, EPUB and Kindle. Book excerpt:
