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Realizing the Promise and Potential of African Agriculture
Front Matter
Executive Summary
1. Introduction
2. Food Security
3. Production Systems
Farming/Production Systems in Africa
Maize Mixed System
Cereal/Root Crop Mixed System
Root Crop System
Agro-pastoral Millet/Sorghum
Highland Perennial System
Forest-based System
Highland Temperate Mixed System
Pastoral Farming System
Tree Crop Based System
Commercial Largeholder & Smallholder System
Coastal Artisanal Fishing System
Irrigated Farming System
Sparse (Arid) System
Urban & Peri-urban Based System
Highland Mixed System
Rainfed Mixed System
Dryland Mixed System
Agricultural Productivity Trends
The Production Ecological Approach
Prioritization of Farming Systems
Conclusions
References
4. Science and Technology
5. Impact-oriented Research
6. New Agricultural Scientists
7. Markets and Policies
8. Recommendations
Annex A. Priority Issues
Annex B. Strategic Actions
Annex C. Biographies
Annex D. Glossary
Annex E. Abbreviations
Annex F. Boxes, Figures, & Tables
PDF Downloads
Text-only Downloads
Workshop reports and background papers


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Cereal/Root Crop Mixed System (13 percent land area, 15 percent agriculture population in Sub-Saharan Africa)

This farming system is mainly in the Guinea savannah. It shares some characteristics with the maize mixed system (such as 120-180 growing days with, in some areas, monomodal rainfall) but is located at lower altitude. Defining characteristics are relatively low population density, abundant arable land, poor communication infrastructure and higher temperatures. Presence of tsetse fly limits livestock numbers with consequent absence of animal traction in much of the area. Cereals such as maize, sorghum and millet are important, but wherever animal traction is absent, root crops such as yams and cassava take over. A wide range of crops is grown, and intercropping is important. The main vulnerability is drought, but the Guinea savannah represents one of the main under-utilized resources in the region. The abundant arable land tends to be under-utilized. Although crop rotation is possible, there are signs of fertility decline. Acidity has increased in some soils suggesting prolonged use of inorganic fertilizers without attention to organic matter levels. Application of mineral fertilizer to cereals has declined as they have become less affordable, and farmers now find difficulty in maintaining soil fertility. Weeds such as striga have become more difficult to control. In the northern part of the area, prolonged use of mechanization for land preparation has led to loss of soil structure and organic matter.

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