Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone
Rhizobial populations in soils from natural Acacia senegal and Acacia nilotica forests in Mauritania and the Senegal river valley
Resource flows and nutrient balances for crop and animal production in smallholder farming systems in Eastern Uganda
Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values
Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon
Patterns of participation in farmers' research groups: lessons from the highlands of Southwestern Uganda
Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification
Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status
Indicators of soil quality: a South-South development of a methdological guide for linking local and technical knowledge