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Cowpea (Vigna unguiculata L. Walp.) is an important African food legume suitable for dry regions. It is the main legume in two contrasting agro-ecological regions of Kenya as an important component of crop rotations because of its relative tolerance to unpredictable drought events. This study was...


Ndungu, S.M.Messmer, M.M.Ziegler, D.Gamper, H.A.Mészáros, E.Thuita, Moses N.Vanlauwe, BernardFrossard, EmmanuelThonar, C.[Cowpea (Vigna unguiculata L. Walp) hosts several widespread bradyrhizobial root nodule symbionts across contrasting agro-ecological production areas in Kenya]Cowpea (Vigna unguiculata L. Walp) hosts several widespread bradyrhizobial root nodule symbionts across contrasting agro-ecological production areas in Kenya

There is a significant gap between the rhetoric of claims about adoption of farm-level natural resource management practices and the reality. New empirical evidence of low adoption from several developing countries suggests that on-farm natural resource management practices face significant const...


Stevenson, JamesVanlauwe, BernardMacours, KarenJohnson, Nancy L.Krishnan, LakshmiPlace, FrankSpielman, David J.Hughes, KarlVlek, Paul L.G.[Farmer adoption of plot- and farm-level natural resource management practices: between rhetoric and reality]Farmer adoption of plot- and farm-level natural resource management practices: between rhetoric and reality

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

In cover cropping systems in the tropics with herbaceous legumes, plant residues are expected to supply nitrogen (N) to non-legume crops during decomposition. Field experiments were carried out to (i) determine the effects of residue quality on decomposition and N release patterns of selected pla...


Sanginga, P.Vanlauwe, BernardMerckx, R.Ibewiro, B.[Nitrogen contributions from decomposing cover crop residues to maize in a tropical derived savanna]Nitrogen contributions from decomposing cover crop residues to maize in a tropical derived savanna

Populations of plant parasitic nematodes and their effects on symbiotic nitrogen (N) fixation in herbaceous legumes and on some selected characteristics of other plant species associated with such cover crops were studied. Two legume species [mucuna, Mucuna pruriens (L) DC. var. utilis (Wright) B...


Sanginga, P.Vanlauwe, BernardMerckx, R.Ibewiro, B.[Influence of phytoparasitic nematodes on symbiotic N2 fixation in tropical herbaceous legume cover crops]Influence of phytoparasitic nematodes on symbiotic N2 fixation in tropical herbaceous legume cover crops

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

The fate of 15N-labeled plant residues from different cover-cropping systems and labeled inorganic N fertilizer in the organic, soil mineral, microbial biomass and soil organic matter (SOM) particle-size fractions was investigated in a sandy Lixisol. Plant residues were from mucuna (legume), labl...


Ibewiro, B.Vanlauwe, BernardSanginga, P.Merckx, R.[Transformations and recovery of residue and fertilizer nitrogen15 in a sandy Lixisol of West Africa]Transformations and recovery of residue and fertilizer nitrogen15 in a sandy Lixisol of West Africa

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