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Diels, J.Aihou, K.Iwuafor, E.Merckx, R.Vanlauwe, Bernard[Evaluating options for soil organic carbon maintenance under intensive cropping in the West African savanna using the Rothamsted Carbon (RothC) model]Evaluating options for soil organic carbon maintenance under intensive cropping in the West African savanna using the Rothamsted Carbon (RothC) model

The potential of alley cropping systems supplied with a limited amount of fertilizer to restore crop productivity on a degraded site and to maintain crop productivity on a recently cleared, non-degraded site on ‘terre de barre' soils in Southern Bénin was investigated from 1994 to 1996. Leucaena ...


Aihou, K.Sanginga, N.Vanlauwe, BernardLyasse, O.Diels, J.Merckx, R.[Alley cropping in the moist savanna of West Africa I. Restoration and maintenance of soil fertility on terre de barre soils in Benin Republic]Alley cropping in the moist savanna of West Africa I. Restoration and maintenance of soil fertility on terre de barre soils in Benin Republic

Lessons for appropriate soil management technology generation for the savannas and their application to the grain legume-cereal rotation system There are many legume-based techno logies capable of regenerating soi l ferti lity but few are being adopted by fa rmers in West Africa . At the Tn terna...


Carsky, R.J.Douthwaite, BoruManyong, Victor M.Sanginga, N.Schulz, S.Vanlauwe, BernardDiels, J.Keatinge, J.D.H.[Amelioration de la gestion des sols par lintroduction de legumineuses dans les systemes cerealiers des savannes africaines]Amelioration de la gestion des sols par lintroduction de legumineuses dans les systemes cerealiers des savannes africaines

Field data have suggested that under P-deficient conditions, legumes supplied with phosphate rock (PR) increase P acquisition by a subsequent maize crop compared to direct application of PR to maize. This study assessed the mechanism of this positive rotational effect in terms of soil P availabil...


Pypers, PieterHuybrighs, M.Diels, J.Abaidoo, R.C.Smolders, E.Merckx, R.[Does the enhanced P acquisition by maize following legumes in a rotation result from improved soil P availability?]Does the enhanced P acquisition by maize following legumes in a rotation result from improved soil P availability?

L‘intégration des légumineuses fixatrices d‘azote dans les systèmes techniques de production a donné lieu à de nombreux travaux de recherche destinés à améliorer ou restaurer la fertilité des terres, mais très peu de ces systèmes techniques sont vraiment appropriés par les paysans en Afrique de l...


Carsky, R.J.Douthwaite, BoruManyong, Victor M.Sanginga, NteranyaSchulz, S.Vanlauwe, BernardDiels, J.Keatinge, J.D.H.[Amélioration de la gestion des sols par l'introduction de légumineuses dans les systèmes céréaliers des savanes africaines]Amélioration de la gestion des sols par l'introduction de légumineuses dans les systèmes céréaliers des savanes africaines

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 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

Data from the derived savanna zone in southern Benin indicated that some intensive cropping systems (maize/Cajanus and maize/Mucuna relays; maize/cotton with Senna siamea hedgerows) returned about 12 Mg DM ha-1 year-1 of plant biomass to the soil. This compared favorably with the 8 Mg DM ha-1 yea...


Diels, J.Lyasse, O.Sanginga, N.Vanlauwe, BernardAihou, K.Iwuafor, E.N.O.Merckx, R.Deckers, J.[Options for soil organic carbon maintenance under intensive cropping in the West African savanna]Options for soil organic carbon maintenance under intensive cropping in the West African savanna

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