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Journal Article 2003-12

Autor: Nwoke, O.C. Vanlauwe, Bernard Diels, J. Sanginga, N. Osonubi, O. Merckx, R.

A large proportion of total P in the soils of the area is unavailable to plants and consequently P is the second most limiting nutrient. The labile and moderately labile phosphorus fractions and adsorption characteristics of surface and subsurface horizons of eleven soil profiles in the derived s...

Enlace original: https://cgspace.cgiar.org/handle/10568/96364

Investigación en Agricultura
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Nwoke, O.C. ,  Vanlauwe, Bernard ,  Diels, J. ,  Sanginga, N. ,  Osonubi, O. ,  Merckx, R. ,  [Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils] ,  Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils
Journal Article 2019-02-19

Autor: Adnan, A.A. Diels, J. Jibrin, J.M. Kamara, A. Craufurd, Peter Q. Shaibu, A.S. Mohammed, B. Tonnang, Henri E.Z.

Most crop simulation models require the use of Genotype Specific Parameters (GSPs) which provide the Genotype component of G×E×M interactions. Estimation of GSPs is the most difficult aspect of most modelling exercises because it requires expensive and time-consuming field experiments. GSPs could...

Enlace original: https://cgspace.cgiar.org/handle/10568/101339

Investigación en Agricultura
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Adnan, A.A. ,  Diels, J. ,  Jibrin, J.M. ,  Kamara, A. ,  Craufurd, Peter Q. ,  Shaibu, A.S. ,  Mohammed, B. ,  Tonnang, Henri E.Z. ,  [Options for calibrating ceres-maize genotype specific parameters under data-scarce environments] ,  Options for calibrating ceres-maize genotype specific parameters under data-scarce environments
Journal Article 2004

Autor: Diels, J. Vanlauwe, Bernard Meersch, M.K. van der Sanginga, N. Merckx, R.

Scanty information on long-term soil organic carbon (SOC) dynamics hampers validation of SOC models in the tropics. We observed SOC content changes in a 16-year continuously cropped agroforestry experiment in Ibadan, south-western Nigeria. SOC levels declined in all treatments. The decline was mo...

Enlace original: https://cgspace.cgiar.org/handle/10568/96324

Investigación en Agricultura
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Diels, J. ,  Vanlauwe, Bernard ,  Meersch, M.K. van der ,  Sanginga, N. ,  Merckx, R. ,  [Longterm soil organic carbon dynamics in a subhumid tropical climate: 13C data in mixed C3/C4 cropping and modeling with ROTHC] ,  Longterm soil organic carbon dynamics in a subhumid tropical climate: 13C data in mixed C3/C4 cropping and modeling with ROTHC
Journal Article 2007

Autor: Nwoke, O.C. Diels, J. Abaidoo, R.C. Sanginga, N.

The differential ability of genotypes of soybean (Glycine max) and cowpea (Vigna unguiculata) to thrive under low-phosphorus (P) conditions by utilising P from sources with low solubility was assessed in a greenhouse study with a low-P savanna soil collected from a research field in Fashola, sout...

Enlace original: https://cgspace.cgiar.org/handle/10568/92167

Investigación en Agricultura
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Nwoke, O.C. ,  Diels, J. ,  Abaidoo, R.C. ,  Sanginga, N. ,  [Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a lowphosphorus savanna soil] ,  Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a lowphosphorus savanna soil
Journal Article 2005

Autor: Okogun, J. Sanginga, Nteranya Abaidoo, R.C. Dashiell, Kenton E. Diels, J.

Several legumes with high biological nitrogen fixation (BNF) potentials have been studied in on-station trials. The processes involved in BNF and the benefits of these species to crop production need to be evaluated using farmers' management practices in farmers' fields. An on-farm trial with 20 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/91809

Investigación en Agricultura
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Okogun, J. ,  Sanginga, Nteranya ,  Abaidoo, R.C. ,  Dashiell, Kenton E. ,  Diels, J. ,  [Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria] ,  Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria
Conference Paper 2007

Autor: Abaidoo, R.C. Singh, BB Nwoke, C Pypers, Pieter Diels, J. Kolawole, G.O.
Enlace original: https://cgspace.cgiar.org/handle/10568/65551

Investigación en Agricultura
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Abaidoo, R.C. ,  Singh, BB ,  Nwoke, C ,  Pypers, Pieter ,  Diels, J. ,  Kolawole, G.O. ,  [Evaluation of shoot and root traits for identifying P-use efficient cowpea genotypes] ,  Evaluation of shoot and root traits for identifying P-use efficient cowpea genotypes
Journal Article 1997

Autor: Asadu, C. Diels, J. Vanlauwe, Bernard
Enlace original: https://cgspace.cgiar.org/handle/10568/103833

Investigación en Agricultura
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Asadu, C. ,  Diels, J. ,  Vanlauwe, Bernard ,  [A comparison of the contributions of clay, silt and organic matter to the effective CEC of soils of subSaharan Africa] ,  A comparison of the contributions of clay, silt and organic matter to the effective CEC of soils of subSaharan Africa
Conference Paper 2007

Autor: Abaidoo, R.C. Sanginga, Nteranya Okogun, J.A. Kolawole, G.O. Tossah, B.K. Diels, J.

Soybean is a relatively new crop to most African smallholder farming communities. Cultivation is expanding rapidly because of its perceived potential to enhance soil fertility through biological nitrogen fixation and its source as food and cash. High N2, fixation in promiscuous soybean genotypes ...

Le soia qui est relativement une nou,relle spdculation pour la plupartdes communautes des petits expioitants d'Afrique, se d6velopperapidernent il cause de son potentiel connu d'augmentation de lafertilit€ des sols par la fixation biologique d'azote, dans l'alimentationet comme culture de rente. ...

Enlace original: https://cgspace.cgiar.org/handle/10568/91424

Investigación en Agricultura
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Abaidoo, R.C. ,  Sanginga, Nteranya ,  Okogun, J.A. ,  Kolawole, G.O. ,  Tossah, B.K. ,  Diels, J. ,  [Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa] ,  Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa
Journal Article 2005

Autor: Vanlauwe, Bernard Aihou, K. Tossah, B. Diels, J. Sanginga, Nteranya Merckx, R.

The functioning of trees as a safety-net for capturing nutrients leached beyond the reach of crop roots was evaluated by investigating changes in exchangeable cations (Ca, Mg, and K) and pH in a wide range of medium to long term alley cropping trials in the derived savanna of West Africa, compare...

Enlace original: https://cgspace.cgiar.org/handle/10568/91880

Investigación en Agricultura
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Vanlauwe, Bernard ,  Aihou, K. ,  Tossah, B. ,  Diels, J. ,  Sanginga, Nteranya ,  Merckx, R. ,  [Senna siamea trees recycle Ca from a Carich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone] ,  Senna siamea trees recycle Ca from a Carich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone
Journal Article 2005

Autor: Vanlauwe, Bernard Diels, J. Sanginga, Nteranya Merckx, R.

Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-tre...

Enlace original: https://cgspace.cgiar.org/handle/10568/91881

Investigación en Agricultura
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Vanlauwe, Bernard ,  Diels, J. ,  Sanginga, Nteranya ,  Merckx, R. ,  [Long term integrated soil fertility management in southwestern Nigeria: crop performance and impact on the soil fertility status] ,  Long term integrated soil fertility management in southwestern Nigeria: crop performance and impact on the soil fertility status

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