Nitrogen Fixation in Acacias

Nitrogen Fixation in Acacias PDF Author: John Brockwell
Publisher:
ISBN: 9781863204903
Category : Acacia
Languages : en
Pages : 0

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Book Description
2. The plant; 3. The bacteria; 4. The symbiosis; 5. Enhancement of the symbiosis; 6. Exploitation of the symbiosis; 7. General conclusions and prognosis.

Nitrogen Fixation in Acacias

Nitrogen Fixation in Acacias PDF Author: John Brockwell
Publisher:
ISBN: 9781863204903
Category : Acacia
Languages : en
Pages : 0

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Book Description
2. The plant; 3. The bacteria; 4. The symbiosis; 5. Enhancement of the symbiosis; 6. Exploitation of the symbiosis; 7. General conclusions and prognosis.

Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment

Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment PDF Author: Dietrich Werner
Publisher: Springer Science & Business Media
ISBN: 9781402035425
Category : Technology & Engineering
Languages : en
Pages : 380

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Book Description
Sustainability has a major part to play in the global challenge of continued development of regions, countries, and continents all around the World and biological nitrogen fixation has a key role in this process. This volume begins with chapters specifically addressing crops of major global importance, such as soybeans, rice, and sugar cane. It continues with a second important focus, agroforestry, and describes the use and promise of both legume trees with their rhizobial symbionts and other nitrogen-fixing trees with their actinorhizal colonization. An over-arching theme of all chapters is the interaction of the plants and trees with microbes and this theme allows other aspects of soil microbiology, such as interactions with arbuscular mycorrhizal fungi and the impact of soil-stress factors on biological nitrogen fixation, to be addressed. Furthermore, a link to basic science occurs through the inclusion of chapters describing the biogeochemically important nitrogen cycle and its key relationships among nitrogen fixation, nitrification, and denitrification. The volume then provides an up-to-date view of the production of microbial inocula, especially those for legume crops.

Management of Soil, Nutrients and Water in Tropical Plantation Forests

Management of Soil, Nutrients and Water in Tropical Plantation Forests PDF Author: E. K. Sadanandan Nambiar
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 594

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Symbiotic Nitrogen Fixation

Symbiotic Nitrogen Fixation PDF Author: P. Graham
Publisher: Springer Science & Business Media
ISBN: 9401110883
Category : Science
Languages : en
Pages : 206

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Book Description
During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.

Acacia hybrid: Ecology and silviculture in Vietnam

Acacia hybrid: Ecology and silviculture in Vietnam PDF Author: Chaw Chaw Sein
Publisher: CIFOR
ISBN: 6028693715
Category :
Languages : en
Pages : 24

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Book Description


Australian Vegetation

Australian Vegetation PDF Author: David A. Keith
Publisher: Cambridge University Press
ISBN: 1108210546
Category : Science
Languages : en
Pages : 771

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Book Description
Australian Vegetation has been an essential reference for students and researchers in botany, ecology and natural resource management for over 35 years. Now fully updated and with a new team of authors, the third edition presents the latest insights on the patterns and processes that shaped the vegetation of Australia. The first part of the book provides a synthesis of ecological processes that influence vegetation traits throughout the continent, using a new classification of vegetation. New chapters examine the influences of climate, soils, fire regimes, herbivores and aboriginal people on vegetation, in addition to completely revised chapters on evolutionary biogeography, quaternary vegetation history and alien plants. The book's second half presents detailed ecological portraits for each major vegetation type and offers data-rich perspectives and comparative analysis presented in tables, graphs, maps and colour illustrations. This authoritative book will inspire readers to learn and explore first-hand the vegetation of Australia.

Applications of Continuous and Steady-State Methods to Root Biology

Applications of Continuous and Steady-State Methods to Root Biology PDF Author: John G. Torrey
Publisher: Springer Science & Business Media
ISBN: 940092237X
Category : Science
Languages : en
Pages : 253

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Book Description
This book provides an excellent illustration of the interrelationship between progress in scientific methodology and conceptual advances, and its publica tion should contribute to further advances. It is well known that major advances in understanding often follow the development of new methods. The development of the acetylene reduction assay for nitrogenase activity provides a good example of this interrelationship between theory and methods. Theoretical knowledge led to a search for substrates for nitro genase that could be assayed for more easily than ammonium, the normal product of the enzyme. The discovery of the reduction of acetylene to ethylene by nitrogenase provided the ideal answer to the problem by provid ing a rapid, specific, nondestructive, and inexpensive assay for nitrogenase activity. This assay is now used by almost every laboratory doing research on nitrogen fixation. However, further use and development of the acetylene reduction assay has shown that it can underestimate nitrogenase activity and can even give incorrect relative values under some circumstances. The major problem is that exposure of legume nodules to acetylene can cause a large increase in the resistance to oxygen diffusion into the nodule. This reduced supply of oxygen decreases the rate of nitrogenase activity within a few minutes.

Acacia mangium Willd: Ecology and Silviculture in Vietnam

Acacia mangium Willd: Ecology and Silviculture in Vietnam PDF Author: Chaw Chaw Sein
Publisher: CIFOR
ISBN: 6028693731
Category :
Languages : en
Pages : 26

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Book Description
This manual summarises information on the ecology and silviculture of the species Acacia mangium Willd, with an emphasis on Vietnam. It also encompasses growth and yield data from published sources, as well as collected from sites under smallholder industrial plantations in Phu Tho Province, Vietnam. This manual is 1 of 5 that guide smallholder tree planting of 5 selected tree species in Vietnam. The other 4 species are: Acacia hybrid, Cinnamomum parthenoxylon (Jack) Meisn, Erythrophloeum fordii Oliver and Eucalyptus urophylla S.T. Blake. The Government of Vietnam is carrying out a large-scale ‘reforestation’ programme, with the aim of improving local livelihood security, environmental sustainability and industrial wood supply. Smallholders are involved in plantation timber production through various schemes. Generally, these reforestation efforts have been effective, even though smallholders often lack the appropriate technical knowledge and management skills. Consequently, the quality and quantity of wood products may be suboptimal. The productivity of smallholder plantations can be improved by enhancing smallholders’ management knowledge and skills, including species selection (site matching), silvicultural management to produce high quality products, and pest and disease management.

Ecology of Tropical Savannas

Ecology of Tropical Savannas PDF Author: B. J. Huntley
Publisher: Springer Science & Business Media
ISBN: 3642687865
Category : Science
Languages : en
Pages : 677

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Book Description


Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate

Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate PDF Author: Sterling Robertson Olsen
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 20

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Book Description