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The role of residue characteristics in enhancing the availability of P was investigated in a greenhouse study using two soils from the northern Guinea savanna (NGS) and four from the derived savanna (DS) zones of the West African moist savanna. Eight organic residues of varying C-to-P ratio were ...


Nwoke, O.C.Vanlauwe, BernardDiels, J.Sanginga, NteranyaOsonubi, O.[Impact of residue characteristics on phosphorus availability in West African moist savanna soils]Impact of residue characteristics on phosphorus availability in West African moist savanna soils

The combined application of organic resources (ORs) and mineral fertilizers is increasingly gaining recognition as a viable approach to address soil fertility decline in sub-Saharan Africa (SSA). We conducted a meta-analysis to provide a comprehensive and quantitative synthesis of conditions unde...


Chivenge, P.P.Vanlauwe, BernardSix, Johan[Does the combined application of organic and mineral nutrient sources influence maize productivity? a meta analysis]Does the combined application of organic and mineral nutrient sources influence maize productivity? a meta analysis

Intensification of agricultural systems in sub-Saharan Africa (SSA) is considered a pre-condition for alleviation of rural poverty. Conservation Agriculture (CA) has been promoted to achieve this goal, based on three principles: minimum tillage, soil surface cover, and diversified crop rotations....


Vanlauwe, BernardWendt, J.Giller, Ken E.Corbeels, MarcGerard, Bruno G.Nolte, C.[A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity]A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity

We analyze the adoption of mineral fertilizer in South-Kivu. We model technology adoption as a three-step-process,including awareness, tryout, and adoption; and empirically analyze these steps using cross-sectional farm-household data, and bivariateand Heckman selection probit models. We find tha...


Lambrecht, I.Vanlauwe, BernardMerckx, R.Maertens, M.[Understanding the process of agricultural technology]Understanding the process of agricultural technology

Agricultural intensification of farming systems in sub-Saharan Africa is a prerequisite to alleviate rural poverty and improve livelihoods. Legumes have shown great potential to enhance system productivity. On-farm experiments were conducted in different agro-ecological zones (AEZ) in Western Ken...


Ojiem, J.O.Franke, A.C.Vanlauwe, BernardRidder, N.A. deGiller, Ken E.[Benefits of legumemaize rotations: assessing the impact of diversity on the productivity of smallholders in Western Kenya]Benefits of legumemaize rotations: assessing the impact of diversity on the productivity of smallholders in Western Kenya

Establishing balanced nutrient requirements for maize (Zea mays L.) in the Northern Nigerian Savanna is paramount to develop site-specific fertilizer recommendations to increase maize yield, profits of farmers and avoid negative environmental impacts of fertilizer use. The model QUEFTS (QUantitat...


Shehu, B.M.Lawan, B.A.Jibrin, J.M.Kamara, A.Y.Mohammed, I.B.Rurinda, J.Zingore, S.Craufurd, P.Vanlauwe, BernardAdam, A.M.Merckx, R.[Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model]Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model

The pH dependent cation exchange capacity (CEC) and pH buffering capacity (pH BC) are two crucial properties in soil fertility management of variable charge soils. However, they are rarely measured, since most of the existing methods are cumbersome and time-consuming. We propose a new method, bas...


Oorts, K.Vanlauwe, BernardPleysier, J.L.Merckx, R.[A new method for the simultaneous measurement of Ph-dependent cation exchange capacity and ph buffering capacity]A new method for the simultaneous measurement of Ph-dependent cation exchange capacity and ph buffering capacity

Soil organic matter (SOM) has a key role in maintaining soil fertility in weathered soils in the tropics. This study was conducted to determine the contribution of different SOM fractions to the cation exchange capacity (CEC) of a tropical soil as influenced by organic matter inputs of different ...


Oorts, K.Vanlauwe, BernardCofie, Olufunke O.Sanginga, N.P.Merckx, R.[Charge characteristics of soil organic matter fractions in a Ferric Lixisol under some multipurpose trees]Charge characteristics of soil organic matter fractions in a Ferric Lixisol under some multipurpose trees

Reliable estimates of symbiotically fixed N2 in herbaceous legumes are important in order to determine their role in maintaining or improving N levels in tropical low-external-input farming systems. We have studied the effects of different management systems on the suitability of two non-N2-fixin...


Ibewiro, B.Sanginga, P.Vanlauwe, BernardMerckx, R.[Evaluation of symbiotic dinitrogen inputs of herbaceous legumes into tropical cover crop systems]Evaluation of symbiotic dinitrogen inputs of herbaceous legumes into tropical cover crop systems

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