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.
,
[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?
The supply response of the smallholder soybean growers was investigation using a sample of 307 farmers randomly-selected from Jive villages in Kaduna and Kano States of Nigeria. Different multivariate functional forms were experimented but the power Junction was chosen because of its obvious uniq...
Nigeria (1) and Uganda (3) are the closest countries to the Democratic Republic of Congo (DRC) where soybean rust caused by Phakopsora pachyrhizi has been reported. In February 2007, during a disease survey in DRC, soybean (Glycine max) leaves with rust symptoms (tan, angular lesions with erumpen...
Ojiambo, P.
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Bandyopadhyay, Ranajit
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Twizeyimana, M.
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Lema, A.
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Frederick, R.D.
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Pedley, K.F.
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Stone, C.L.
,
Hartman, G.
,
[First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo]
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First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo
Fourteen soybean accessions and breeding lines were evaluated for resistance to soybean rust caused by the fungus Phakopsora pachyrhizi. Evaluations were conducted in replicated experiments in growth chambers using detached leaves and under greenhouse and field conditions. In growth-chamber exper...
Twizeyimana, M.
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Ojiambo, P.S.
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Ikotun, T.
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Paul, C.
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Hartman, G.L.
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Bandyopadhyay, Ranajit
,
[Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi]
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Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi
The deficient agronomic qualities of the local soybean germplasm and the need to develop varieties with desirable attributes, such as promiscuous nodulation, low pod shattering, sustained seed viability and resistance to bacterial diseases and viruses necessitated the introduction of new varietie...
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
Field studies were conducted during the 2014 and 2015 wet seasons at Zaria in the northern Guinea savanna and at Iburu in the southern Guinea savanna of Nigeria to determine the productivity of maize– soybean intercropping system. There were four treatment combinations in the experiment: sole mai...
Kamara, A.Y.
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Tofa, A.I.
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Ademulegun, T.
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Solomon, R.
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Shehu, H.
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Kamai, N.
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Omoigui, L.O.
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[Maize-soybean intercropping for sustainable intensification of cereal-legume cropping systems in northern Nigeria]
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Maize-soybean intercropping for sustainable intensification of cereal-legume cropping systems in northern Nigeria
Simple sequence repeat (SSR) markers were used to classify 116 isolates of Phakopsora pachyrhizi, the cause of soyabean rust, collected from infected soyabean leaves in four agroecological zones in Nigeria. A high degree of genetic variation was observed within the sampled populations of P. pachy...
Soybean (Glycine max) is a major cash crop in the savannas of Nigeria although productivity is typically constrained by poor soil fertility. The objective of this research was to determine the interactive effect of N and P on soybean productivity in the northern Guinea and Sudan savannas of north...
Kamara, A.Y.
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Ekeleme, F.
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Omoigui, L.O.
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Ajeigbe, Hakeem A.
,
[Phosphorus and nitrogen fertilization of soybean in the Nigerian savanna]
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Phosphorus and nitrogen fertilization of soybean in the Nigerian savanna
Soybean (Glycine max L.) is an important grain legume cultivated on approximately 1.24 million ha in Africa (1). Malawi ranks fourth in area of production in Africa, with 75,000 ha in 2009 (1). Soybean is also gaining importance in Mozambique and several other southern African countries due to di...
Kumar, P.L.
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Sharma, K.
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Boahen, S.
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Tefera, H.
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Tamo, M.
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[First report of soybean witchesbroom disease caused by Group 16SrII phytoplasma in soybean in Malawi and Mozambique]
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First report of soybean witchesbroom disease caused by Group 16SrII phytoplasma in soybean in Malawi and Mozambique