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Author: National Research Council (U.S.). Advisory Committee on Technology Innovation
Publisher: National Academies
ISBN:
Category : Casuarina
Languages : en
Pages : 136
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Book Description
Highlights eighteen species of Australasian trees as valuable resources for planting on denuded land to provide fuel and other products.
Author: National Research Council (U.S.). Advisory Committee on Technology Innovation
Publisher: National Academies
ISBN:
Category : Casuarina
Languages : en
Pages : 136
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Book Description
Highlights eighteen species of Australasian trees as valuable resources for planting on denuded land to provide fuel and other products.
Author: Katharina Pawlowski
Publisher: Springer Science & Business Media
ISBN: 1402035470
Category : Science
Languages : en
Pages : 325
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Book Description
For researchers and graduates with any interest in plant or soil sciences, this fascinating study will be a godsend – it’s the complete state of the art with regard to actinorhizal symbioses. The self-contained sixth volume of a comprehensive series on nitrogen fixation, it includes chapters that deal with all aspects of this symbiosis between actinorhizal plants and nitrogen-fixing bacteria. It also contains information both about symbionts and their ecological role and use. Other chapters tackle the global distribution of different actinorhizal plants and their microsymbionts and how this impacts the question of co-evolution of the micro- and macrosymbionts as well as comparing the actinorhizal and leguminous symbioses. No other book provides the up-to-date and in-depth coverage of this volume.
Author:
Publisher: IICA
ISBN:
Category :
Languages : en
Pages : 130
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Book Description
Author: Ken E. Giller
Publisher: CABI
ISBN: 0851994172
Category : Science
Languages : en
Pages : 441
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Book Description
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.
Author: J.K. Ladha
Publisher: Springer Science & Business Media
ISBN: 9401709106
Category : Nature
Languages : en
Pages : 212
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Book Description
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: M. Lalonde
Publisher: Springer Science & Business Media
ISBN: 9400951477
Category : Science
Languages : en
Pages : 212
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Book Description
The fifth meeting of scientists working with Frankia and actinorhizal plants was held at Montmorency Forest of Laval University in Quebec from August 6-8, 1984. Results of research presented at the meeting are included in this special volume of Plant and Soil. The understanding of actinorhizal systems continue to increase, though work and use shops and discussions at this and similar meetings make it evident that this important subject remains open for fruitful investigation at all levels. Some important 'firsts' were reported at this meeting. The first extensive survey of Frankiae and their host specificity ranges from Asia was presented. This is of significance since Asia is a center of diversity for many actinorhizal host plant genera. A report that proto plasts of Frankia have been produced and regenerated for the first time improves the possibility for genetic manipulation of Frankia. It is also important to note the first report herein of successful mass inoculation of actinorhizal plants commercially for stabilization and reclamation of disturbed soils around hydroelectric power projects in Quebec. This heralds the transfer of actinorhizal technology to private and public users. The bacterial genus Frankia is easily recognized both in vivo and in vitro, and isolation of this organism has become routine. But, as yet, there are not sufficient biochemical, morphological, or anatomical criteria for establishing species.
Author: Y. P. S. Bajaj
Publisher: Springer Science & Business Media
ISBN: 3662106175
Category : Technology & Engineering
Languages : en
Pages : 440
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Book Description
This volume presents twenty-four chapters on the biotechnology of trees and deals with the importance, distribution, conventional propagation, micropropagation, review of tissue culture studies, in vitro culture, and genetic manipulation of forest, fruit and ornamental trees, such as various species of Acrocomia, Ailanthus, Anacardium, Allocasuarina, Carya, Casuarina, Coffea, Cyphomandra, Fagus, Feijoa, Fraxinus, Gymnocladus, Leptospermum, Metroxylon, Oxydendrum, Paeonia, Paulownia, Pouteria, Psidium, Quercus. Included are also five chapters on gymnosperm trees, such as Abies fraseri, Cephalotaxus, Pinus durangensis, P. greggii, P. halepensis, P. pinea, and Tetraclinis articulata. Trees IV is a valuable reference book for scientists, teachers, and students of forestry, botany, genetics and horticulture, who are interested in tree biotechnology.
Author: Y.P.S. Bajaj
Publisher: Springer Science & Business Media
ISBN: 3642596096
Category : Technology & Engineering
Languages : en
Pages : 341
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Book Description
Annotation. "This volume on Transgenic Trees, comprising 22 chapters, deals with the genetic transformation of fruit and forest trees." "It is of special interest to advanced students, teachers and research workers in the field of forestry, horticulture, molecular biology, plant tissue culture, botany, and plant biotechnology in general."--BOOK JACKET. Title Summary field provided by Blackwell North America, Inc. All Rights Reserved.
Author: R.I. Miller
Publisher: Springer Science & Business Media
ISBN: 940110719X
Category : Nature
Languages : en
Pages : 226
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Book Description
The diversity of life is displayed by a diversity the biodiversity elements. These unique of structural and functional elements. Many approaches are usually tailored to the region of aspects of this diversity are critical for main the world where the scientists' work is focused. taining the healthy functioning of biological This book presents accounts of many tech systems both within short and long time scales. niques that are currently being used in different Some highly diverse features of nature arise parts of the globe by conservation scientists. simply from the heterogeneous patterns that Many different techniques are necessary to comprise the web of nature. Many of these handle the differences in data types and data features contribute to the beauty and quality of coverages that occur across the globe. Also, a life. Humans do not yet understand enough variety of mapping approaches are needed about the complexity of nature to distinguish today to strengthen the many diverse critical those elements that act to support natural conservation objectives. These objectives include vitality from those elements that contribute the identification of the distribution patterns exclusively to our experience of beauty and for a species or habitat type and the placement quality in life. of protected area boundaries.
Author: Laurent Laplaze
Publisher: Frontiers Media SA
ISBN: 2889454444
Category : Biodiversity
Languages : en
Pages : 227
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Book Description
The World population will reach 9 billion by 2050, with the majority of this growth occurring in developing countries. On the other hand, one in nine of the World's population suffers from chronic hunger, the vast majority of which live in developing countries. We therefore need to find new and sustainable solutions to feed this increasing population and alleviate the predicted negative impact of global changes on crop production. This e-Book deals with new strategies to improve food security and livelihoods in rural communities, reduce vulnerability, increase resilience and mitigate lthe impact of climate change and land degradation on agriculture. This collection of 18 articles addresses the major abiotic factors limiting crop production worldwide, how to characterize and exploit the available plant biodiversity to increase production and sustainability in agrosystems, and the use of beneficial microbes to improve production and reduce the use of fertilizers and pesticides.
