Abstract
In sub-Saharan Africa (SSA), traditional farming methods have led to severe nutrient depletion, low crop yields, and poverty, leaving many farm families disappointed. The situation is aggravated by low use of fertilizers by farmers, lack of policy and institutional support, weak fertilizer markets, farmers’ lack of access to credit and inputs, inappropriate fertilizer packaging sizes, deteriorating soil science capacity, and weak agricultural extension. This leads to a huge gap between the actual and potential crop yields and widespread poverty. Opportunities, options, and innovations are available to turn around this situation and reduce poverty in Africa. We reviewed the status of agricultural soils of sub-Saharan Africa, the factors contributing to their current status, and the existing and emerging opportunities for addressing the soil fertility challenges. The major points are (1) the soils in SSA have continued to be characterized by huge and widespread negative nutrient imbalances and low productivity, and (2) the factors contributing to declining soil fertility in Africa are not abating. The way forward includes: balanced fertilization; input–output market development; improved crop management, and the use of nutrient budgets to inform policy and ensure that farmers and other land managers enjoy the profitable use of farm inputs including mineral fertilizers and agro-minerals.
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Abbreviations
- AATF:
-
African Agricultural Technology Foundation
- AE:
-
Agronomic efficiency
- AEZs:
-
Agro-ecological zones
- AfDB:
-
African Development Bank
- AFFM:
-
Africa Fertilizer Financing Mechanism
- BNF:
-
Biological nitrogen fixation
- C:
-
Carbon
- CA:
-
Conservation agriculture
- CAN:
-
Calcium ammonium nitrate
- DAP:
-
Di-ammonium phosphate
- FAO:
-
Food and Agriculture Organization of the United Nations
- FOB:
-
Free on board
- FSR:
-
Farming Systems Research
- IPNM:
-
Integrated Plant Nutrient Management
- ISFM:
-
Integrated Soil Fertility Management
- K:
-
Potassium
- KARI:
-
Kenya Agricultural Research Institute
- KCl:
-
Potassium chloride
- Kg:
-
Kilogram
- MoA:
-
Ministry of Agriculture
- MoA-NAL:
-
Ministry of Agriculture National Agricultural Laboratories
- N:
-
Nitrogen
- NPK:
-
Nitrogen phosphorus potassium
- OECD:
-
Organization for Economic Co-operation and Development
- P:
-
Phosphorus
- PKS:
-
Phosphorus potassium sulfur
- PPP:
-
Public–private partnership
- PR:
-
Phosphate rock
- SCODP:
-
Sustainable Community Oriented Development Programme
- SSA:
-
Sub-Saharan Africa
- SSP:
-
Single superphosphate
- T&V:
-
Training and visit
- TSP:
-
Triple superphosphate
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Chianu, J.N., Chianu, J.N. & Mairura, F. Mineral fertilizers in the farming systems of sub-Saharan Africa. A review. Agron. Sustain. Dev. 32, 545–566 (2012). https://doi.org/10.1007/s13593-011-0050-0
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DOI: https://doi.org/10.1007/s13593-011-0050-0