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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

Information on the inter- and intra-specific variability in the acquisition and utilization of phosphorus (P) by promiscuous soybean genotypes under low-P conditions can be helpful in the short-term management of soil P availability. Thirteen promiscuous soybean genotypes were evaluated in a low-...


Nwoke, O.C.Okogun, JASanginga, NteranyaDiels, J.Abaidoo, R.C.Osonubi, O.[Phosphate rock utilization by soybean genotypes on a low-P savanna soil and the status of soil P fractions after a subsequent maize crop]Phosphate rock utilization by soybean genotypes on a low-P savanna soil and the status of soil P fractions after a subsequent maize crop

Phosphorus (P) uptake by plant roots depends on P intensity (I) and P quantity (Q) in the soil. The relative importance of Q and I on P uptake is unknown for soils with large P sorption capacities because of difficulties in determining trace levels of P in the soil solution. We applied a new isot...


Pypers, PieterDelrue, JDiels, J.Smolders, EMerckx, R.[Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity : Comparison of E- and L-values]Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity : Comparison of E- and L-values

There are several indications that legumes are capable of accessing sparingly soluble phosphorus (P) in the soil through root-induced processes. We hypothesize that this plant-induced mobilization of P can be demonstrated if the plant accessible P assessed by isotopic dilution ( L-value ) exceeds...


Pypers, PieterLoon, L. vanDiels, J.Abaidoo, R.C.Smolders, EMerckx, R.[Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values]Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values

Potential N (SN) and P (SP) supplies, N and P utilization efficiencies and fertilizer recovery rates for the northern Guinea Savanna (NGS) agro-ecological zone of Nigeria were derived from data collected on farmers fields, and used as input in the QUantitative Evaluation of the Fertility of Trop...


Tabi, FODiels, J.Ogunkunle, AOIwuafor, E.N.O.Vanlauwe, BernardSanginga, Nteranya[Potential nutrient supply, nutrient utilization efficiencies, fertilizer recovery rates and maize yield in northern Nigeria]Potential nutrient supply, nutrient utilization efficiencies, fertilizer recovery rates and maize yield in northern Nigeria

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