Tropical Soils

Author: A. S. R. Juo
Publisher: Oxford University Press on Demand
ISBN: 0195115988
Format: PDF, ePub, Docs
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1. Introduction. 2. Mineralogy. 3. Soil Chemistry. 4. Soil Physics. 5. Soil Biology and Microbiology. 6. Soil Fertility. 7. Soil Formation and Classification. 8. Major Soils of the Tropics: A Descriptive Classification Based on Clay Mineralogy. 9. Soil Management: An Overview. 10. Properties and Management of Kaolinitic Soils. 11. Properties and Management of Oxidic Soils. 12. Properties and Management of Smectitic Soils. 13. Properties and Management of Allophanic Soils. 14. Soils and Sustainable Agriculture.

Tropical Forage Plants

Author: W.D. Pitman
Publisher: CRC Press
ISBN: 9781420038781
Format: PDF, ePub
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Tropical Forage Plants: Development and Use covers the research and resulting pasture development in the tropics and subtropics, which has undergone dramatic changes in the past few decades. Providing a broad, global perspective, it serves as a comprehensive resource covering a wide range of subjects pertaining to forage and animal production in the tropics and subtropics including such aspects as agronomy, pasture management, forage plant breeding, soils, plant nutrition, and disease management and control. The book presents extensive coverage of the technical aspects of forage-based agriculture in the tropics. It addresses both the scientific aspects of this technology and its practical application. The editors integrate the extensive research on tropical forage species in the western hemisphere with that of global research efforts. They provide over 15,000 references that lay the groundwork for further research. The editors have assembled an excellent mixture of theorists and applied scientists giving the book wide-ranging, interdisciplinary appeal. In addition to providing extensive coverage of development and usage globally, Tropical Forage Plants: Development and Use presents the key aspects of selecting, breeding, and managing superior pastures in the tropics in the context of meeting local needs and global environmental concerns.

Global Climate Change and Tropical Ecosystems

Author: John M. Kimble
Publisher: CRC Press
ISBN: 9781566704854
Format: PDF, Docs
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Tropical ecosystems - the regions between the tropics of Cancer and Capricorn - play an important role in global processes, economic issues, and political concerns. In their natural state, tropical ecosystems support a large quantity of above- and below-ground biomass, and constitute a major part of the terrestrial carbon pool. Conversion of the natural ecosystem to agriculture and forestry ecosystems disturbs this ecological balance. Global Climate Change and Tropical Ecosystems presents data on carbon pool fluxes from case studies in 12 countries in tropical regions. The chapters cover: Characteristics of tropical ecosystems Soil and biotic carbon pools Impacts of land use and soil management Slash-and-burn practices Crop residue and fertility management This volume adds to the understanding of pedospheric processes in tropical ecosystems and how to better use soils as a sink for carbon dioxide and other greenhouse gases. With Global Climate Change and Tropical Ecosystems you will understand the link between soil productivity, environmental quality and the global carbon cycle, not only in these ecologically sensitive regions but worldwide.

Soil Fertility Decline in the Tropics

Author: Alfred E. Hartemink
Publisher: CABI
ISBN: 9780851998497
Format: PDF, Docs
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Wide coverage of soils and perennial cropping systems in the tropicsSynthesis of decades of researchChallenges assumptions on the benefits of plantations for soil fertilityIt is generally assumed that soil fertility decline is widespread in the tropics and that this is largely associated with annual cropping and subsistence farming. In contrast, perennial plant cover (as in plantation agriculture) provides better protection for the soil.This book reviews these concepts, focusing on soil chemical changes under different land-use systems in the tropics. These include perennial crops, annual crops and forest plantations. Two case studies, on sisal plantations in Tanzania and sugar cane in Papua New Guinea, are presented for detailed analysis. The author demonstrates that soil fertility decline is also a problem on plantations.

Human Impacts on Amazonia

Author: Darrell A. Posey
Publisher: Columbia University Press
ISBN: 0231517351
Format: PDF, ePub
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From the pre-Columbian era to the present, native Amazonians have shaped the land around them, emphasizing utilization, conservation, and sustainability. These priorities stand in stark contrast to colonial and contemporary exploitation of Amazonia by outside interests. With essays from environmental scientists, botanists, and anthropologists, this volume explores the various effects of human development on Amazonia. The contributors argue that by protecting and drawing on local knowledge and values, further environmental ruin can be avoided.

Management of Soil Nutrients and Water in Tropical Plantation Forests

Author: E. K. Sadanandan Nambiar
Publisher:
ISBN:
Format: PDF, Kindle
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Plantations for the tropics their, extent and nature. Genetic resources for plantation forestry. The biophysical environment. Soils of the tropics and their management for plantation forestry. Hydrology of forest platations in the tropics Dynamics of leaf and canopy development. The ecophysiological basis for productivity in the tropics. Roots and Mycorrhizas in plantation ecosystems. Nitrogen fixation in tropical forest plantations. Dynamics of nutrient supply in plantation soils. Soil and stand management for short-rotation plantations. Stand development and productivity. Origanic matter accretion, decomposition and mineralisation. Reforestation of salt-affected and acid soils. Towards sustained productivity and acid soils. Towards sustained productivity of tropical plantations: science and pratictice.

Sustainable Management of Soil Resources in the Humid Tropics

Author: R. Lal
Publisher: United Nations University Press
ISBN: 9789280808766
Format: PDF, Kindle
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Misuse of the soil & inappropriate agricultural systems are causing degradation of the humid tropical eco-region & perpetuating food shortages, malnutrition & poor standards of living. This publication presents research information on scientifically proven methods of deforestation for conversion to agricultural land use, & soil & crop management systems that allow for the sustained use of soil & water resources in the humid tropics. It cites examples of appropriate techniques with explanations of their impact on production, soil quality & the environment. Information is also provided on the characteristics of an improved farming system; new land development; run-off management & erosion control; & nutrient management. It also outlines research & development priorities.