Fertility of Soils

A Future for Farming in the West African Savannah

Authors:

ISBN: 978-3-642-84322-8 (Print) 978-3-642-84320-4 (Online)

Table of contents (33 chapters)

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  1. Front Matter

    Pages I-XVIII

  2. General Introduction

    1. Front Matter

      Pages 1-1

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      Book Chapter

      Pages 3-9

      Scope of the Study

  3. Fertility and Agricultural Development

    1. Front Matter

      Pages 11-11

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      Book Chapter

      Pages 13-17

      Definition of Fertility

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      Book Chapter

      Pages 18-31

      The Farming Environment

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      Book Chapter

      Pages 32-41

      Population and Migration

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      Book Chapter

      Pages 42-46

      Agricultural Policy

  4. Present Fertility Status

    1. Front Matter

      Pages 47-47

    2. Crop Yields in Recent Times

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        Book Chapter

        Pages 49-60

        National Yield Trends

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        Book Chapter

        Pages 61-70

        Yields in Project Areas

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        Book Chapter

        Pages 71-71

        Summary: Moderate Yields Giving Concern for the Future

      The Development of Soils Under Cropping in Practical Farming

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        Book Chapter

        Pages 75-83

        Soil Development Under Traditional Farming

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        Book Chapter

        Pages 84-99

        The Effect of Population Growth on the Soil

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        Book Chapter

        Pages 100-111

        Agricultural Intensification and Its Consequences for the Management of Soil Fertility

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        Book Chapter

        Pages 112-115

        Summary of Part II

  5. Experimental Bases of Sustainability

    1. Front Matter

      Pages 117-117

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      Book Chapter

      Pages 119-123

      Sustainable Yields

    3. The Ecological Approach

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        Book Chapter

        Pages 127-131

        Farming and Physical Degradation of the Soils

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        Book Chapter

        Pages 132-145

        Root Development of Crops and Biological Imbalance in Soils

      Soil Development and Crop Yield in Permanent Rain-Fed Farming — Long Term Experiments

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        Book Chapter

        Pages 149-153

        Introduction — The Interpretation of Long-Term Expriment

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        Book Chapter

        Pages 154-157

        Year-to-Year Variation in Yield: The Effect of Rainfall and Its Distribution

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        Book Chapter

        Pages 158-163

        Low Intensity Systems — Hand Cultivation

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        Book Chapter

        Pages 164-167

        Hand Cultivation with Intensification

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        Book Chapter

        Pages 168-177

        Systems Using Animal Traction

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