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Journal Article 2003-05

Autor: Sanginga, N.

Nitrogen (N) has been gradually depleted from West African soils and now poses serious threats to food production. Many ways of increasing N supply (e.g. judicious use of inorganic fertilizers and nitrogen-fixing plants) have been tried in West African farming systems. Herbaceous and woody legume...

Enlace original: https://cgspace.cgiar.org/handle/10568/96424

Investigación en Agricultura
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Sanginga, N. ,  [Role of biological nitrogen fixation in legume based cropping systems; a case study of West Africa farming systems] ,  Role of biological nitrogen fixation in legume based cropping systems; a case study of West Africa farming systems
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
Book Chapter 2002

Autor: Diels, J. Lyasse, O. Sanginga, N. Vanlauwe, Bernard Aihou, K. Iwuafor, E.N.O. Merckx, R. Deckers, J.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/99995

Investigación en Agricultura
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Diels, J. ,  Lyasse, O. ,  Sanginga, N. ,  Vanlauwe, Bernard ,  Aihou, 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
Journal Article 2001

Autor: Diels, J. Vanlauwe, Bernard Sanginga, N. Coolen, E. Merckx, R.

The 13C natural labeling technique in combination with modeling could potentially be used to analyze SOM changes in long-term experiments involving complex cropping systems such as agroforestry systems. It requires information on quantity and 13C abundance of all plant materials entering the soil...

Enlace original: https://cgspace.cgiar.org/handle/10568/92684

Investigación en Agricultura
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Diels, J. ,  Vanlauwe, Bernard ,  Sanginga, N. ,  Coolen, E. ,  Merckx, R. ,  [Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies] ,  Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies
Journal Article 2001

Autor: Vanlauwe, Bernard Sanginga, N. Merckx, R.

Improved cropping systems with in-situ production of organic matter require the input of additional inorganic N to maintain crop production in a sustainable way. For proper management of this fertilizer-N, it is necessary to quantify how the applied fertilizer N is used by the various components ...

Enlace original: https://cgspace.cgiar.org/handle/10568/92658

Investigación en Agricultura
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Vanlauwe, Bernard ,  Sanginga, N. ,  Merckx, R. ,  [Alley cropping with Senna siamea in southwestern Nigeria: 1 Recovery of 15N labelled urea by the alley cropping system] ,  Alley cropping with Senna siamea in southwestern Nigeria: 1 Recovery of 15N labelled urea by the alley cropping system
Journal Article 2001

Autor: Vanlauwe, Bernard Sanginga, N. Merckx, R.

Crop and tree roots are crucial in the nutrient recycling hypotheses related to alley cropping systems. At the same time, they are the least understood components of these systems. The biomass, total N content and urea-derived N content of the Senna and maize roots in a Senna-maize alley cropping...

Enlace original: https://cgspace.cgiar.org/handle/10568/92659

Investigación en Agricultura
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Vanlauwe, Bernard ,  Sanginga, N. ,  Merckx, R. ,  [Alley cropping with Senna siamea in southwestern Nigeria: 11 Dry matter, total N, and ureaderived N dynamics of the Senna and maize roots] ,  Alley cropping with Senna siamea in southwestern Nigeria: 11 Dry matter, total N, and ureaderived N dynamics of the Senna and maize roots
Journal Article 2000

Autor: Sanginga, N. Lyasse, O. Singh, B.

Differences in growth, nodulation and arbuscular mycorrhizal fungi (AMF) root infection among recent cowpea breeding lines from IITA were examined at low and high P levels in pot (94 lines) and field experiments (43 lines) at Fashola in the derived savanna zone of Nigeria. Based on their growth p...

Enlace original: https://cgspace.cgiar.org/handle/10568/92621

Investigación en Agricultura
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Sanginga, N. ,  Lyasse, O. ,  Singh, B. ,  [Phosphorus use efficiency and nitrogen balance of cowpea breeding lines in a low P soil of the derived savanna zone in West Africa] ,  Phosphorus use efficiency and nitrogen balance of cowpea breeding lines in a low P soil of the derived savanna zone in West Africa
Journal Article 2001

Autor: Vanlauwe, Bernard Aihou, K. Houngnandan, P. Diels, J. Sanginga, N. Merckx, R.

Although the West-African moist savanna zone has a high potential for crop production, yields on farmers' fields are, on average, far below this potential, mainly due to the low use of external sources of nutrients. Since the mid-1990s, it has become clear that in order to upgrade crop production...

Enlace original: https://cgspace.cgiar.org/handle/10568/92660

Investigación en Agricultura
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Vanlauwe, Bernard ,  Aihou, K. ,  Houngnandan, P. ,  Diels, J. ,  Sanginga, N. ,  Merckx, R. ,  [Nitrogen management in adequate input maizebased agriculture in the derived savanna benchmark zone of Benin Republic] ,  Nitrogen management in adequate input maizebased agriculture in the derived savanna benchmark zone of Benin Republic
Journal Article 1998

Autor: Vanlauwe, Bernard Sanginga, N. Merckx, R.

Quantification of the fate of residue N is essential in low-input tropical cropping systems for the development of management practices that optimize N-use efficiency. The recovery of N from 15N-labeled leucaena (Leucaena leucocephala (Lam.) de Wit) and dactyladenia (Dactyladenia barteri (Hook f ...

Enlace original: https://cgspace.cgiar.org/handle/10568/95958

Investigación en Agricultura
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Vanlauwe, Bernard ,  Sanginga, N. ,  Merckx, R. ,  [Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems] ,  Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems
Journal Article 1998

Autor: Vanlauwe, Bernard Diels, J. Duchateau, L. Sanginga, N. Merckx, R.

In tropical cropping systems with few external imputs, efficient management of mineral N derived from added organic residues is essential for the proper functioning of the system. We studied the dynamics of mineral Nitroden (N) in the top 100 cm of soil with a system tensiometers and suction cups...

Enlace original: https://cgspace.cgiar.org/handle/10568/100983

Investigación en Agricultura
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Vanlauwe, Bernard ,  Diels, J. ,  Duchateau, L. ,  Sanginga, N. ,  Merckx, R. ,  [Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues] ,  Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues

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