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...
Sanginga, N.
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[Role of biological nitrogen fixation in legume based cropping systems; a case study of West Africa farming systems]
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Role of biological nitrogen fixation in legume based cropping systems; a case study of West Africa farming systems
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...
Nwoke, O.C.
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Diels, J.
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Abaidoo, R.C.
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Sanginga, N.
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[Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a lowphosphorus savanna soil]
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Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a lowphosphorus savanna soil
Promiscuous soybean lines have been bred on the basis that they would nodulate freely without artificial inoculation. However, our recent studies have demonstrated that the indigenous rhizobia are not able to meet their full nitrogen (N) requirement. Rhizobia inoculation might be necessary. We ex...
Okogun, J.A
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Sanginga, N.
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[Can introduced and indigenous rhizobial strains compete for nodule formation by promiscuous soybean in the moist savanna agroecological zone of Nigeria?]
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Can introduced and indigenous rhizobial strains compete for nodule formation by promiscuous soybean in the moist savanna agroecological zone of Nigeria?
It has been difficult to explain the rotation effect based solely on N availability in maize-soybean cropping systems in the moist savanna zone of sub-Saharan Africa. Although arbuscular mycorrhizal fungi (AMF) can contribute to plant growth by reducing stresses resulting from other nutrient defi...
Sanginga, N.
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Carsky, R.J.
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Dashiell, Kenton E.
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[Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna]
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Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna
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.
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Thottappilly, G.
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[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
Sustainable resource management is the critical agricultural research and development challenge in sub-Saharan Africa. The accumulated knowledge on soil management gathered over the last 10 years, combined with solid crop improvement and plant health research at farmers’ level, has brought us to ...
Sanginga, N.
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Dashiell, Kenton E.
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Diels, J.
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Vanlauwe, Bernard
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Lyasse, O.
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Carsky, R.J.
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Tarawali, S.
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Asafo-Adjei, B.
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Menkir, A.
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Schulz, S.
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Singh, B.B.
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Chikoye, D.
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Keatinge, D.
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Ortiz, R.
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[Sustainable resource management coupled to resilient germplasm to provide new intensive cerealgrainlegumelivestock systems in the dry savanna]
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Sustainable resource management coupled to resilient germplasm to provide new intensive cerealgrainlegumelivestock systems in the dry savanna
The IITA in its research for sustainable soil fertility management has passed through several stages during which legume-based systems were always at the forefront. Alley cropping has N yields of more than 200 kg ha-1 with 50% N2 fixation. In the case of Mucuna cover cropping, the ecological bene...
Carsky, R.
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Sanginga, N.
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Schulz, S.
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Douthwaite, Boru
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Manyong, Victor M.
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Diels, J.
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Vanlauwe, Bernard
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Keatinge, J.D.H.
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[The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa]
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The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa