Simulating phosphorus responses in annual crops using APSIM : Model evaluation on contrasting soil types
Serum zinc levels of school children on a corn-soy blend feeding trial in primary schools in Suba district, Kenya
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
On-farm assessment of legume fallows and other soil fertility management options used by smallholder farmers in Southern Malawi
Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status