Soil Fertility Decline in the Tropics

by Alfred E. Hartemink
Soil Fertility Decline in the Tropics
Author: Alfred E. Hartemink
Publisher: CABI
Total Pages: 380
Release: 2003
Genre: Technology & Engineering
ISBN: 9780851998497
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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.

Properties and Management of Soils in the Tropics

by Pedro A. Sanchez
Properties and Management of Soils in the Tropics
Author: Pedro A. Sanchez
Publisher: Cambridge University Press
Total Pages: 685
Release: 2019-01-10
Genre: Business & Economics
ISBN: 1107176050
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Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.

Soil Fertility Management in Sub-Saharan Africa

by W. Graeme Donovan
Soil Fertility Management in Sub-Saharan Africa
Author: W. Graeme Donovan
Publisher: World Bank Publications
Total Pages: 76
Release: 1998-01-01
Genre: Technology & Engineering
ISBN: 9780821342367
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World Bank Technical Paper No. 408. This report is a critical review of the technical, economic, and institutional constraints on improving soil fertility in Sub-Saharan Africa, and the actions recommended to address them. Action plans prepared for Ghana, Kenya, Malawi, and Mali examine the demand for and supply of mineral fertilizers, the exploitation of local mineral resources, the prevention of soil erosion and increasing soil-water retention, and soil fertility management using organic technologies and management practices.

Sustainable Agriculture and the Environment in the Humid Tropics

by National Research Council
Sustainable Agriculture and the Environment in the Humid Tropics
Author: National Research Council
Publisher: National Academies Press
Total Pages: 721
Release: 1993-02-01
Genre: Technology & Engineering
ISBN: 0309047498
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Rainforests are rapidly being cleared in the humid tropics to keep pace with food demands, economic needs, and population growth. Without proper management, these forests and other natural resources will be seriously depleted within the next 50 years. Sustainable Agriculture and the Environment in the Humid Tropics provides critically needed direction for developing strategies that both mitigate land degradation, deforestation, and biological resource losses and help the economic status of tropical countries through promotion of sustainable agricultural practices. The book includes: A practical discussion of 12 major land use options for boosting food production and enhancing local economies while protecting the natural resource base. Recommendations for developing technologies needed for sustainable agriculture. A strategy for changing policies that discourage conserving and managing natural resources and biodiversity. Detailed reports on agriculture and deforestation in seven tropical countries.

Integrated Soil Fertility Management in Africa

by Nteranya Sanginga
Integrated Soil Fertility Management in Africa
Author: Nteranya Sanginga
Publisher: CIAT
Total Pages: 270
Release: 2009
Genre: Soil fertility
ISBN: 9290592613
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Forward. A call for integrated soil fertility management in Africa. Introduction. ISFM and the African farmer. Part I. The principles of ISFM: ISFM as a strategic goal, Fertilizer management within ISFM, Agro-minerals in ISFM, Organic resource management, ISFM, soil biota and soil health. Part II. ISFM practices: ISFM products and fields practices, ISFM practice in drylands, ISFM practice in savannas and woodlands, ISFM practice in the humid forest zone, Conservation Agriculture. Part III. The process of implementing ISFM: soil fertility diagnosis, soil fertility management advice, Dissemination of ISFM technologies, Designing an ISFM adoption project, ISFM at farm and landscape scales. Part IV. The social dimensions of ISFM: The role of ISFM in gender empowerment, ISFM and household nutrition, Capacity building in ISFM, ISFM in the policy arena, Marketing support for ISFM, Advancing ISFM in Africa. Appendices: Mineral nutrient contents of some common organic resources.

Improving Soil Fertility Recommendations in Africa using the Decision Support System for Agrotechnology Transfer (DSSAT)

by Job Kihara
Improving Soil Fertility Recommendations in Africa using the Decision Support System for Agrotechnology Transfer (DSSAT)
Author: Job Kihara
Publisher: Springer Science & Business Media
Total Pages: 191
Release: 2012-03-12
Genre: Technology & Engineering
ISBN: 940072960X
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The book gives a detailed description of the application of DSSAT in simulating crop and soil processes within various Agro-ecological zones in Africa. The book, an output of a series of 3 workshops, provides examples of the application of DSSAT models to simulate nitrogen applications, soil and water conservation practices including effects of zai technology, phosphorus and maize productivity, generation of genetic coefficients, long-term soil fertility management technologies in the drylands, microdosing, optimization of nitrogen x germplasms x water, spatial analysis of water and nutrient use efficiencies and, tradeoff analysis. The minimum dataset requirements for DSSAT is discussed. This book arises from attempts to address the limited use of models in decision support by African agricultural (both soil scientist and agronomists) scientists.

Assessment of Soil Nutrient Balance

by Rabindra N. Roy
Assessment of Soil Nutrient Balance
Author: Rabindra N. Roy
Publisher: Food & Agriculture Org.
Total Pages: 104
Release: 2003
Genre: Science
ISBN: 9789251050385
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Nutrient-balance assessments are valuable tools for delineating the consequences of farming on soil fertility. Various approaches and methods for different situations have been used in the past. This bulletin presents a state-of-the-art review of nutrient balance studies. It brings out the evolution of the approaches and methods, provides for comparisons among them, features the improvements made, and highlights remaining issues. This analysis will be useful in further development of the assessment methodologies as reliable tools for devising time-scale soil fertility management interventions.

Farming Systems in the Tropics

by Hans Ruthenberg
Farming Systems in the Tropics
Author: Hans Ruthenberg
Publisher:
Total Pages: 412
Release: 1976
Genre: Technology & Engineering
ISBN:
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Some general charscteristics of farming in a tropical environment; Shifting cultivation systems; Fallow systems; Ley systems; Systems with permanent upland cultivation; Systems with arable irrigation farming; Systems with perennial crops; Grazing systems; General tendences in the development of tropical farm systems.

Nutrient Disequilibria in Agroecosystems

by E. M. A. Smaling
Nutrient Disequilibria in Agroecosystems
Author: E. M. A. Smaling
Publisher: Oxford University Press, USA
Total Pages: 344
Release: 1999
Genre: Technology & Engineering
ISBN:
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Nutrient imbalances have a substantial impact on the productivity and sustainability of agroecosystems worldwide. Fertilizer and manure use, atmospheric deposition, international transportation of produce, solute and gas emissions and soil erosion have all contributed to deficits and surpluses, which in some areas have reached alarming proportions. This book describes and explores the latest concepts of the causes of nutrient imbalances, including the importance of different spatial scales, and examines ways to quantify and manage nutrient stocks, the increasing amount of legislation and the urgent need for the development of integrated nutrient management technologies. Nutrient Disequilibria in Agroecosystemsalso includes case studies, from fish farms in eastern Asia to nutrient flow monitoring in Kenyan tea/maize farms, the dairy sector in New Zealand and ecological farming in Switzerland, the future for global-level research in soil fertility management and nutrient flow analysis. This title should enhance research and the adoption of (inter)national policies on soil fertility maintenance with its global, multi-scale, multi-disciplinary approach.