Attention is being paid to improving the N2 fixation of promiscuous nodulating soybeans in an attempt to develop sustainable cropping systems in the moist savanna. There is however a dearth of reliable estimates of N2 fixation by these promiscuous soybeans and hardly any quantitative information ...
Sanginga, N.
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Dashiell, Kenton E.
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Okogun, J.A.
,
Thottappilly, G.
,
[Nitrogen fixation and N contribution by promiscuous nodulating soybeans in the southern Guinea savanna of Nigeria]
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Nitrogen fixation and N contribution by promiscuous nodulating soybeans in the southern Guinea savanna of Nigeria
Leaf extracts and mulch from 14 multipurpose trees were used to test their effects on maize germination, growth and yield. Maize germination was significantly reduced by leaf extracts of all species with increasing extract concentration. The most drastic reductions were caused by Gliricidia sepiu...
Kamara, A.Y.
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Akobundu, I.O.
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Sanginga, N.
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Jutzi, S.C.
,
[The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)]
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The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)
Residues from two nitrogen fixing trees, Albizia zygia and Gliricidia sepium and one non nitrogen fixing tree Samania dinklagei and their combination with 50% of rice husk, were evaluated for their effect on growth and yield of rice (Oryza sativa) varieties (Rok 10 and Rok 23) grown in an Oxisol ...
Baggie, I.
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Zapata, F.
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Sanginga, N.
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Danso, S.
,
[Ameliorating acid infertile rice soil with organic residue from nitrogen fixing trees]
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Ameliorating acid infertile rice soil with organic residue from nitrogen fixing trees
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...
Diels, J.
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Vanlauwe, Bernard
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Sanginga, N.
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Coolen, E.
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Merckx, R.
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[Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies]
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Temporal variations in plant delta 13C values and implications for using the 13C technique in longterm soil organic matter studies
Although the fertility status of soils in the West African moist savanna is generally believed to be low, crop yields on farmers' fields vary widely from virtually nil to values near the potential production. The soil fertility status was evaluated for a number of farmers' fields selected at rand...
Vanlauwe, Bernard
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Diels, J.
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Lyasse, O.
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Aihou, K.
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Iwuafor, E.
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Sanginga, N.
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Merckx, R.
,
Deckers, J.
,
[Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management]
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Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management
Fallow management plays a key role in supplying nutrients to the growing crop, suppressing weeds, reducing pests and diseases, and improving the sustainability of cropping systems in the humid forest zone of West and Central Africa. We evaluated soil nutrient concentration, soil acidity and soil ...
Koutika, L.S.
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Sanginga, N.
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Vanlauwe, Bernard
,
Weise, S.F.
,
[Chemical properties and soil organic matter assessment under fallow systems in the forest margins benchmark]
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Chemical properties and soil organic matter assessment under fallow systems in the forest margins benchmark
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 ...
Vanlauwe, Bernard
,
Sanginga, N.
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Merckx, R.
,
[Alley cropping with Senna siamea in southwestern Nigeria: 1 Recovery of 15N labelled urea by the alley cropping system]
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Alley cropping with Senna siamea in southwestern Nigeria: 1 Recovery of 15N labelled urea by the alley cropping system
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...
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]
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Alley cropping with Senna siamea in southwestern Nigeria: 11 Dry matter, total N, and ureaderived N dynamics of the Senna and maize roots
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...
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]
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Phosphorus use efficiency and nitrogen balance of cowpea breeding lines in a low P soil of the derived savanna zone in West Africa
Agronomic results indicate that maize grain yields generally are higher when the crop is planted following soybean than in continuous maize cultivation in the moist savanna agroecological zones of West Africa. Many factors have been hypothesized to explain this phenomenon, including enhanced N av...
Sanginga, N.
,
Okogun, J.
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Vanlauwe, Bernard
,
Dashiell, Kenton E.
,
[The contribution of nitrogen by promiscuous soybeans to maize based cropping the moist savanna of Nigeria]
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The contribution of nitrogen by promiscuous soybeans to maize based cropping the moist savanna of Nigeria