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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 1990

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

Differences in the nitrogen-fixing abilities of provenances of Casuarina equisetifolia and C. cunninghamiana were assessed in pot experiments. Three methods, the 15N isotope dilution, the A value and total N difference were used to measure N2 fixed. There was a good agreement between the A value ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101817

Investigación en Agricultura
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Sanginga, N. ,  Bowen, G.D. ,  Danso, S.K.A. ,  [Genetic variability in symbiotic nitrogen fixation within and between provenances of two Casuarina species using the 15Nlabelling methods] ,  Genetic variability in symbiotic nitrogen fixation within and between provenances of two Casuarina species using the 15Nlabelling methods
Conference Paper 1975-06

Autor: Danso, S.K.A.

Twenty strains of cowpea Rhizobium have been screened to date for their ability to form nodules and to fix nitrogen using the Leonard jar assembly. The strains were tested on Ife Brown, TVu 1190, and TVx 222-01B. From among the twenty, four promising strains were selected. The nodulation and nitr...

Enlace original: https://cgspace.cgiar.org/handle/10568/97939

Investigación en Agricultura
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Danso, S.K.A. ,  [Initial studies on the legume: rhizobium symbiosis] ,  Initial studies on the legume: rhizobium symbiosis
Journal Article 1994

Autor: Sanginga, N. Danso, S.K.A. Mulongoy, K. Ojeifo, A.A.

Establishment of Leucaena leucocephala was poor at Ibadan (Transition forest-savanna zone) and Fashola (savanna zone, 70 km north of Ibadan) in southwestern Nigeria as a result of low soil fertility and the presence of only a few native rhizobia capable of nodulating it. Inoculation with L. leuco...

Enlace original: https://cgspace.cgiar.org/handle/10568/100918

Investigación en Agricultura
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Sanginga, N. ,  Danso, S.K.A. ,  Mulongoy, K. ,  Ojeifo, A.A. ,  [Persistence and recovery of introduced Rhizobium ten years after inoculation on Leucaena leucocephala grown on an Alfisol in southwetern Nigeria] ,  Persistence and recovery of introduced Rhizobium ten years after inoculation on Leucaena leucocephala grown on an Alfisol in southwetern Nigeria
Conference Paper 1992

Autor: Danso, S.K.A.

With the low input of fertilizers into African farming systems, it is necessary to harness biological nitrogen fixation to its fullest extent. The greatest potential, at least in the short term, lies in nitrogen fixation in grain and pasture legumes and in nitrogen-fixing trees. To maximise nitro...

Enlace original: https://cgspace.cgiar.org/handle/10568/100013

Investigación en Agricultura
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Danso, S.K.A. ,  [Biological nitrogen fixation in trees in agroecosystems: twenty years of biological nitrogen fixation research in Africa.] ,  Biological nitrogen fixation in trees in agroecosystems: twenty years of biological nitrogen fixation research in Africa.
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
Journal Article 1991

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

Twenty-three provenances of Gliricidia sepium and eleven isolines of Leucaena leucocephala were examined at a low and at high phosphate levels (20 and 80 mg P kg-1 soil) for growth, phosphate (P) uptake and use efficiency. Large differences in growth at the low P level, and in growth response to ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101708

Investigación en Agricultura
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Sanginga, N. ,  Bowen, G.D. ,  Danso, S.K.A. ,  [Intraspecific variation in growth and P accumulation of Leucaena leucocephala and Gliricidia sepium as influenced by soil phosphate status] ,  Intraspecific variation in growth and P accumulation of Leucaena leucocephala and Gliricidia sepium as influenced by soil phosphate status

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