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Conference Paper 1990

Autor: Sanginga, N. Zapata, F. Danso, S.K.A. Bowen, G.D.

Despite the widespread use of Leucaena leucocephala in alley cropping systems, little information is available on the effect of different magagement practices on its nitrogen fixation. We studied the effects of three successive cuttings at 12 week intervals on nodulation and nitrogen fixation of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101813

Investigación en Agricultura
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Sanginga, N. ,  Zapata, F. ,  Danso, S.K.A. ,  Bowen, G.D. ,  [Effect of successive cuttings on nodulation and nitrogen fixation of Leucaena leucocephala using 15N dilution and the difference methods] ,  Effect of successive cuttings on nodulation and nitrogen fixation of Leucaena leucocephala using 15N dilution and the difference methods
Journal Article 1990

Autor: Sanginga, N. Zapata, F. Danso, S.K.A. Bowen, G.D.

We studied the effect of three successive cuttings on N uptake and fixation and N distribution in Leucaena leucocephala. Two isolines, uninoculated or inoculated with three different Rhizobium strains, were grown for 36 weeks and cut every 12 weeks. The soil was labelled with 50 ppm KNO 3 enriche...

Enlace original: https://cgspace.cgiar.org/handle/10568/101812

Investigación en Agricultura
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Sanginga, N. ,  Zapata, F. ,  Danso, S.K.A. ,  Bowen, G.D. ,  [Effect of successive cuttings on uptake and partitioning of 15N among plant parts of Leucaena leucocephala] ,  Effect of successive cuttings on uptake and partitioning of 15N among plant parts of Leucaena leucocephala
Journal Article 1990

Autor: Sanginga, N. Danso, S.K.A. Zapata, F. Bowen, G.D.

We examined the suitability of four reference crops, i.e., two non-fixing trees,Cassia siamea andEucalyptus grandis, and two uninoculated fixing trees,Leucaena leucocephala andAcacia albida, for measuring fixed N2 fixed in inoculatedL. leucocephala andA. albida grown for 36 weeks in pots. The15N ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101816

Investigación en Agricultura
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Sanginga, N. ,  Danso, S.K.A. ,  Zapata, F. ,  Bowen, G.D. ,  [Influence of reference trees on N2fixation estimates in Leucaena leucocephala and Acacia albicia using 15N_ labelling techniques+A51] ,  Influence of reference trees on N2fixation estimates in Leucaena leucocephala and Acacia albicia using 15N_ labelling techniques+A51
Journal Article 1990

Autor: Sanginga, N. Bowen, G.D. Danso, S.K.A.

Nitrogen fixed in 13 provenances of Acacia albida and 11 isolines of Leucaena leucocephala inoculated with effective Rhizobium strains was measured by 15N techniques and the total N difference method. In the test soil, on the average, L. leucocephala derived about 65% of its total N from atmosphe...

Enlace original: https://cgspace.cgiar.org/handle/10568/101818

Investigación en Agricultura
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Sanginga, N. ,  Bowen, G.D. ,  Danso, S.K.A. ,  [Assessment of genetic variability for N2 fixation between and with provenance of Leucaena leucocephala and Acacia albida estimated by 15N labelling techniques] ,  Assessment of genetic variability for N2 fixation between and with provenance of Leucaena leucocephala and Acacia albida estimated by 15N labelling techniques
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 1999

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

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 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/98020

Investigación en Agricultura
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Aihou, K. ,  Sanginga, N. ,  Vanlauwe, Bernard ,  Lyasse, 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
Journal Article 1999

Autor: Vanlauwe, Bernard Aman, S. Aihou, K. Tossah, B.K. Adebiyi, V. Sanginga, N. Lyasse, O. Diels, J. Merckx, R.

In cropping systems with limited amounts of external inputs, the soil organic matter pool (SOM) may contribute significantly to plant nutrition. The impact of organic inputs on total SOM and particulate organic matter (POM) N contents as affected by soil type and the relationships between sources...

Enlace original: https://cgspace.cgiar.org/handle/10568/96069

Investigación en Agricultura
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Vanlauwe, Bernard ,  Aman, S. ,  Aihou, K. ,  Tossah, B.K. ,  Adebiyi, V. ,  Sanginga, N. ,  Lyasse, O. ,  Diels, J. ,  Merckx, R. ,  [Alley cropping in the moist savanna of West Africa III. Soil organic matter fractionation and soil productivity] ,  Alley cropping in the moist savanna of West Africa III. Soil organic matter fractionation and soil productivity
Journal Article 1999

Autor: Tossah, B.K. Zamba, D.K. Vanlauwe, Bernard Sanginga, N. Lyasse, O. Diels, J. Merckx, R.

The moist savanna of West-Africa is characterized by a wide range of climates and soil types. The impact of the biophysical environment on hedgerow N uptake, wood production and maize grain yield was assessed for three years in three alley cropping trials with a selected number of hedgerow specie...

Enlace original: https://cgspace.cgiar.org/handle/10568/96057

Investigación en Agricultura
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Tossah, B.K. ,  Zamba, D.K. ,  Vanlauwe, Bernard ,  Sanginga, N. ,  Lyasse, O. ,  Diels, J. ,  Merckx, R. ,  [Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo] ,  Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo
Journal Article 1996

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

A laboratory incubation experiment with 15N labeled root and leaf residues of 3 agroforestry species (Leucaena leucocephala, Dactyladenia harto'i and Flemingia macrophylla) was conducted under controlled conditions (25 °C) for 56 days to quantify residue C and N mineralization and its relationshi...

Enlace original: https://cgspace.cgiar.org/handle/10568/101014

Investigación en Agricultura
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Vanlauwe, Bernard ,  Nwoke, O.C. ,  Sanginga, N. ,  Merckx, R. ,  [Impact of residue quality on the C and N mineralization of leaf and root residues of three agroforestry species] ,  Impact of residue quality on the C and N mineralization of leaf and root residues of three agroforestry species
Journal Article 1996

Autor: Sanginga, N. Danso, S.K.A. Zapata, F.

Appropriate 15N-labeling methods are crucial for estimating N2-fixation in trees used in agroforestry systems. A 4-year field experiment was conducted on an Alfisol in Southwestern Nigeria to compare the estimates of Na fixed in Leucaena leucocephala, using two non-N2-fixing leguminous trees, Sen...

Enlace original: https://cgspace.cgiar.org/handle/10568/101018

Investigación en Agricultura
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Sanginga, N. ,  Danso, S.K.A. ,  Zapata, F. ,  [Field measurements of nitrogen fixation in leguminous trees used in agroforestry systems: influence of 15Nlabelling approaches and reference trees] ,  Field measurements of nitrogen fixation in leguminous trees used in agroforestry systems: influence of 15Nlabelling approaches and reference trees

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