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This paper describes an incubation experiment with homogeneously 14C labeled maize-straw and its insoluble fraction. The role of the soluble fraction in the decomposition process was assessed, using three independently measured characteristics: (1) fractionation of the maize-straw, resulting in k...


Vanlauwe, BernardDendooven, L.Merckx, R.[Residue fractionation and decomposition: the significance of the active fraction]Residue fractionation and decomposition: the significance of the active fraction

Legume-cereal rotations are an essentialcomponent of integrated soil fertility management inlow-input cropping systems, but strategies are needed toincrease phosphorus (P) fertilizer use efficiency in suchsystems. These may include preferential targeting of Pto one of the crops in the rotation cy...


Vandamme, E.Pypers, PieterVanlauwe, BernardBaijukya, Frederick P.Smolders, E.Merckx, R.[Residual phosphorus effects and nitrogen x phosphorus interactions in soybeanmaize rotations on a Pdeficient Ferralsol]Residual phosphorus effects and nitrogen x phosphorus interactions in soybeanmaize rotations on a Pdeficient Ferralsol

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

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

Diagnostic on-farm nutrient omission trials were conducted over two cropping seasons (2015 and 2016) to assess soil nutrients related constraints to maize yield in the northern Nigerian savanna agro-ecological zone and to quantify their variability. Two sets of trials were conducted side by side,...


Shehu, B.M.Merckx, R.Jibrin, J.M.Kamara, A.Rurinda, J.[Quantifying variability in maize yield response to nutrient applications in the northern Nigeria Savanna]Quantifying variability in maize yield response to nutrient applications in the northern Nigeria Savanna

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

The availability of P from rock phosphate (RP) is often too low to demonstrate an immediate impact on cereal production. Legumes may improve the immediate availability of P from RP and eventually benefit subsequent maize crops. The ability of Mucuna pruriens (L.) var utilis (Wright) Burck and Lab...


Vanlauwe, BernardNwoke, O.C.Diels, J.Sanginga, P.Carsky, R.J.Deckers, J.Merckx, R.[Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by Mucuna pruriens, Lablab purpureus, and maize]Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by Mucuna pruriens, Lablab purpureus, and maize

Mucuna pruriens and Lablab purpureus can immediately benefit from rock phosphate (RP), but as both herbaceous legumes have only limited economic value, these benefits are only meaningful if yields of a subsequent maize crop are improved. The impact of RP application to Mucuna and Lablab on grain ...


Vanlauwe, BernardDiels, J.Sanginga, P.Carsky, R.Deckers, J.Merckx, R.[Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by maize to previous herbaceous legume cropping and rock phospate treatments]Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by maize to previous herbaceous legume cropping and rock phospate treatments

The impact of land use (unfertilized continuous maize cropping, unfertilized and fertilized alley cropping with maize, Gliricidia sepium tree fallow, natural fallow) on the soil organic matter (SOM) status and general soil fertility characteristics were investigated for a series of soils represen...


Vanlauwe, BernardAihou, K.Tossah, S.Aman, B.K.Diels, J.Lyasse, O.Hauser, S.Sanginga, P.Merckx, R.[Nitrogen and phosphorus uptake by maize as affected by particulate organic matter quality, soil characteristics, and landuse history for soils from the West African moist savanna zone]Nitrogen and phosphorus uptake by maize as affected by particulate organic matter quality, soil characteristics, and landuse history for soils from the West African moist savanna zone

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