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The following nine main cropping systems were evaluated: maize/maize in rotation without N-fertilizer (control); maize/cowpea in rotation where maize received N-fertilizer; maize/pigeonpea intercropping without N-fertilizer; maize/cowpea/pigeonpea in rotation where maize received N-fertilizer; ma...


Aihou, K.Sanginga, NteranyaVanlauwe, BernardDiels, J.Merkx, RCleemput, O. van[Restoration of terre de barre fertility using pigeonpea grown in rotation or intercropping with maize in the derived savanna of Benin]Restoration of terre de barre fertility using pigeonpea grown in rotation or intercropping with maize in the derived savanna of Benin
Nziguheba, GeneroseTossah, B.K.Diels, J.Franke, A.C.Aihou, K.Iwuafor, E.N.O.Nwoke, CMerckx, R.[Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna]Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna

Nutrient depletion is a major constraint to crop production for moist savanna soils, and inputs of nutrients are required to overcome this constraint. The impact of sole and combined applications of organic inputs (OIs) [fresh tree prunings, Pueraria phaseoloides (Roxb.) Benth. residues, and manu...


Vanlauwe, BernardAihou, K.Aman, SIwuafor, E.N.O.Tossah, B.K.Diels, J.Sanginga, NteranyaLyasse, O.Merckx, R.Deckers, J.[Maize yield as affected by organic inputs and urea in the West African moist savanna]Maize yield as affected by organic inputs and urea in the West African moist savanna

Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-tre...


Vanlauwe, BernardDiels, J.Sanginga, NteranyaMerckx, R.[Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status]Long-term integrated soil fertility management in South-western Nigeria : Crop performance and impact on the soil fertility status

The 13C natural labeling technique in combination with modeling could potentially be used to analyze SOM changes in long-term experiments involving complex cropping systems such as agroforestry systems. It requires information on quantity and 13C abundance of all plant materials entering the soil...


Diels, J.Vanlauwe, BernardSanginga, N.Coolen, E.Merckx, R.[Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies]Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies

Although the fertility status of soils in the West African moist savanna is generally believed to be low, crop yields on farmers' fields vary widely from virtually nil to values near the potential production. The soil fertility status was evaluated for a number of farmers' fields selected at rand...


Vanlauwe, BernardDiels, J.Lyasse, O.Aihou, K.Iwuafor, E.Sanginga, N.Merckx, R.Deckers, J.[Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management]Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management

The moist savanna of West-Africa is characterized by a wide range of climates and soil types. The impact of the biophysical environment on hedgerow N uptake, wood production and maize grain yield was assessed for three years in three alley cropping trials with a selected number of hedgerow specie...


Tossah, B.K.Zamba, D.K.Vanlauwe, BernardSanginga, N.Lyasse, O.Diels, J.Merckx, R.[Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo]Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo

In tropical cropping systems with few external imputs, efficient management of mineral N derived from added organic residues is essential for the proper functioning of the system. We studied the dynamics of mineral Nitroden (N) in the top 100 cm of soil with a system tensiometers and suction cups...


Vanlauwe, BernardDiels, J.Duchateau, L.Sanginga, N.Merckx, R.[Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues]Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues

Sustainable resource management is the critical agricultural research and development challenge in sub-Saharan Africa. The accumulated knowledge on soil management gathered over the last 10 years, combined with solid crop improvement and plant health research at farmers’ level, has brought us to ...


Sanginga, N.Dashiell, Kenton E.Diels, J.Vanlauwe, BernardLyasse, O.Carsky, R.J.Tarawali, S.Asafo-Adjei, B.Menkir, A.Schulz, S.Singh, B.B.Chikoye, D.Keatinge, D.Ortiz, R.[Sustainable resource management coupled to resilient germplasm to provide new intensive cerealgrainlegumelivestock systems in the dry savanna]Sustainable resource management coupled to resilient germplasm to provide new intensive cerealgrainlegumelivestock systems in the dry savanna

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