Tropical Soils

Author: A. S. R. Juo
Publisher: Oxford University Press on Demand
ISBN: 0195115988
Format: PDF, ePub, Mobi
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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.

Proceeding of the 1st International Conference on Tropical Agriculture

Author: Alim Isnansetyo
Publisher: Springer
ISBN: 3319603639
Format: PDF, Kindle
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The proceeding of tropical agriculture is a proceeding of papers presented at the International Conference on Tropical Agriculture. Sustainability of agriculture production system is an important issue in the world, which includes all aspects of sustainable criteria, such as technical, socio-economic, and ecological aspects. This book covers sustainable tropical agriculture, sustainable tropical fisheries, sustainable tropical animal production, sustainable tropical forestry, tropical animal health, and Innovative and Emerging Food Technology and Management. The most common, challenging issues in plant, animal and fisheries production in the tropics are climate change, inefficiency production system, low technological innovation, decreasing environment quality, and the outbreak risk of pest and diseases. These issues are closely linked to the socio-economic condition of farmers as small-scale farms are dominant in this area. In addition, post-harvest technology is crucial to maintaining the high quality of products after on farm production. This volume provides the recent research and development on tropical agriculture production systems for plant, terrestrial animal and aquatic animal to establish sustainable agriculture production in the tropics.

Human Impacts on Amazonia

Author: Darrell A. Posey
Publisher: Columbia University Press
ISBN: 0231517351
Format: PDF, Mobi
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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.

New Trends in Soil Micromorphology

Author: Selim Kapur
Publisher: Springer Science & Business Media
ISBN: 3540791345
Format: PDF, ePub, Docs
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The soil water retention curve, the saturated hydraulic conductivity and the unsaturated hydraulic conductivity function are basic soil hydraulic functions and parameters. Ample apprehension of the soil hydraulic functions and parameters is required for a successful formulation of the principles leading to sustainable soil management, agricultural production and environmental protection. From these, all the other parameters, required in the solution of the practical tasks, are derived. The basic soil hydraulic functions are strongly dependent upon the soil porous system. The development of models is characteristic by the gradual transition from the simplest concepts up to the sophisticated approaches, which should correspond to the visual reality studied by soil micromorphology. 2 Soil Porous System and Soil Micromorphometry 2.1 An Overview on the Quantification of the Soil Porous System Quanti? cation of the soil porous system consists of classi? cation of soil pores, ch- acterization of the soil pores shapes and the estimation of the pore size distribution function. When the hydraulic functions of the soil pores are considered, the following laws of hydrostatics and hydrodynamics are applied as best ? tting to the classi? cation criteria of the size of the pores (Kutilek and Nielsen 1994, p. 20, Kutilek 2004): A. Submicroscopic pores that are so small that they preclude clusters of water molecules from forming ? uid particles or continuous water ? ow paths.

Managing Organic Matter in Tropical Soils Scope and Limitations

Author: Christopher Martius
Publisher: Springer Science & Business Media
ISBN: 9401721726
Format: PDF, Kindle
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Soil organic matter is a reservoir for plant nutrients, provides water-holding capacity, stabilizes soil structure against compaction and erosion, and thus determines soil productivity. All agriculture to some degree depends on soil organic matter. It has long been known that soil organic matter declines when land is taken into cultivation, and that the productivity of new agricultural land is governed by fertility contributions from decomposing natural organic matter. The expansion of agriculture to ever new and more fragile lands, particularly in tropical and developing regions, causes environmental degradation with local effects on soil quality, regional effects on landscape integrity and water quality, and global effects on carbon cycles and the atmosphere. This book summarizes current knowledge of the properties and dynamics of soil organic matter in the tropics, its role in determining soil quality, its stability and turnover, and the options for management in the context of tropical landuse systems, for a readership of resource scientists, economists and advanced students. Maintenance of organic matter is critical for preventing land degradation. Case studies and practical applications are therefore an important part of the book, as are the exploration of future directions in research and management.

Management of Soil Nutrients and Water in Tropical Plantation Forests

Author: E. K. Sadanandan Nambiar
Publisher:
ISBN:
Format: PDF, ePub, Mobi
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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.

Soil science and sustainable land management in the tropics

Author: John Keith Syers
Publisher: CABI
ISBN:
Format: PDF, ePub, Mobi
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Contributors Preface 1. Soil Science and Sustainable Land Management, D. J. Greenland 2. Evaluation of the Soil and Land Resource, M. Latham 3. Proposals for Quantitative Criteria in the Management of Sustainable Agricultural Systems, J. R. O'Callaghan and G. C. L. Wyseure 4. Soil Erosion and Conservation: A Place for Soil Science?, M. Stocking 5. Agroforestry Practices to Control Runoff and Erosion on Steeplands in Ilocos Norte, Philippines, E. O. Agustin and S. Nortcliff 6. The Quaternary Legacy in the Tropics: A Fundamental Property of the Land Resource, M. F. Thomas 7. Effects of Soil Erosion and Sedimentation on Land Quality: Defining Pedogenetic Baselines in the Dondoa District of Tanzania, R. W. Payton and E. K. Shishira 8. Sustainable Regeneration of Surface Tilth in Zimbabwean Vertisols Through Water Management, J. Hussein and M. A. Adey 9. Agrohydrological Modelling: A Tool for Sustainable Development of Land Resources, J. W. Gowing and G. C. L. Wyseure 10. Extending the Growing Season by Efficient Use of Rainfall, J. Tabi Owono, D. A. Rose and R. S. Shiel 11. The Role of Soil Organisms in the Sustainability of Tropical Cropping Systems, M. J. Swift, et al. 12. Can Biological Nitrogen Fixation Sustain Agriculture in the Tropics? 13. Improving the Agricultural Productivity of the Soils of Northeast Thailand Through Soil Organic Matter Management, A. G. O'Donnell, et al. 14. Soil Organic Matter Management in Thailand, J. S. Watson 15. A Diagnostic Approach to Solving Soil Fertility Problems in the Tropics, M. E. Sumner and K. Hylton 16. Physical and Chemical Constraints to Sustainable Soil Use Under Rainfed Conditions in the Humid Tropics of Southeast Asia, I. R. Willett 17. The Use of Simplified Nutrient Balances at Farm Level to Determine Boundary Conditions for Sustainable Production, F. C. T. Guiking, D. M. Jansen, and L. O. Fresco 18. The Economic Context of Soil Science, J. Lingard 19. Soil Science Research in Developing Countries: Towards a Holistic Approach, M. Catizzone 20. Soil Science and Better Land Use in the Tropics, A. J. Bennett Index