Nitrogen stress is a major nutrient constraint to maize productivity in the Northern Guinea savanna of West and Central Africa. Thus, improved maize germplasm tolerant to low N with the capacity to utilize N more efficiently together with improved agronomic practices appear to be the primary cont...
Omoigui, L.
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Alabi, S.
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Ado, S.
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Ajala, S.
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Kamara, A.
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[Genetic gains from cycles of fullsib recurrent selection for low nitrogen tolerance in a tropical maize population]
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Genetic gains from cycles of fullsib recurrent selection for low nitrogen tolerance in a tropical maize population
Maize streak geminivirus (MSV) isolates originating from maize, other cerealsand 18 grass species in Nigeria were characterized based on symptoms, transmission, host range and serological tests. All isolates could be transmitted to MSV-susceptible sweet corn cv. Golden Bantam using Cicadulina sto...
Mesfin, T.
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Bosque Pérez, N.A.
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Buddenhagen, I.W.
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Thottappilly, G.
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Oloyede, S.O.
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[Studies of maize streak virus isolates from grass and cereal hosts in Nigeria]
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Studies of maize streak virus isolates from grass and cereal hosts in Nigeria
Rhopalosiphum maidis (Fitch) dominated the aerial aphid plankton in bean (Phaseolus vulgaris L.) monocultures and mixed cultures of bean with corn (Zea mays L.) in Illinois. It was also the most common species landing on bean plants in this study during the summer of 1987. More flight activity wa...
Bottenberg, H.
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Irwin, M.E.
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[Flight and landing activity of Rhopalosiphum maidis (Homoptera: Aphididae) in bean monocultures and beancorn mixtures]
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Flight and landing activity of Rhopalosiphum maidis (Homoptera: Aphididae) in bean monocultures and beancorn mixtures
The use of agroforestry systems in which pruning from trees is used to mulch the companion crops is an important area of research in the tropics. However, previous studies mostly evaluated the contribution of mulch to soil improvement and rarely examined the effect of mulch on weeds. Field experi...
Kamara, A.Y.
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Akobundu, I.O.
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Jutzi, S.C.
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[Selective control of weeds in an arable crop by mulches from some multipurpose trees in southwestern Nigeria]
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Selective control of weeds in an arable crop by mulches from some multipurpose trees in southwestern 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.
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[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)
The effect of potassium application to maize plants on the development, survival and fecundity as well as larval and pupal weight of Sesamia calamistis and Eldana saccharina were studied in the laboratory. Six different potassium treatments corresponding to 0, 30, 60, 60, 90, 120 and 150 kg K2O/h...
Denké, K.
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Schulthess, F.
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Bonato, O.
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Gounou, S.
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Smith, J.
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[Effet de la fumure en potassium sur le developpement, la survie et la fecondite de Sesamia calamistis Hampson (Lepidoptera: Noctuidae) et de Eldana saccharina Walker (Lepidoptera: Pyralidae)]
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Effet de la fumure en potassium sur le developpement, la survie et la fecondite de Sesamia calamistis Hampson (Lepidoptera: Noctuidae) et de Eldana saccharina Walker (Lepidoptera: Pyralidae)
Mucuna pruriens and Lablab purpureus can immediately benefit from rock phosphate (RP), but as both herbaceous legumes have only limited economic value, these benefits are only meaningful if yields of a subsequent maize crop are improved. The impact of RP application to Mucuna and Lablab on grain ...
Vanlauwe, Bernard
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Diels, J.
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Sanginga, P.
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Carsky, R.
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Deckers, J.
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Merckx, R.
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[Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by maize to previous herbaceous legume cropping and rock phospate treatments]
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Utilization of rock phosphate by crops on a representative toposequence in the northern Guinea savanna zone of Nigeria: response by maize to previous herbaceous legume cropping and rock phospate treatments
The impact of land use (unfertilized continuous maize cropping, unfertilized and fertilized alley cropping with maize, Gliricidia sepium tree fallow, natural fallow) on the soil organic matter (SOM) status and general soil fertility characteristics were investigated for a series of soils represen...
Vanlauwe, Bernard
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Aihou, K.
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Tossah, S.
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Aman, B.K.
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Diels, J.
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Lyasse, O.
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Hauser, S.
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Sanginga, P.
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Merckx, R.
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[Nitrogen and phosphorus uptake by maize as affected by particulate organic matter quality, soil characteristics, and landuse history for soils from the West African moist savanna zone]
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Nitrogen and phosphorus uptake by maize as affected by particulate organic matter quality, soil characteristics, and landuse history for soils from the West African moist savanna zone
In an area of Nigeria where downy mildew of maize is present, histological assessment of maize seed revealed the presence of mycelium and oospores of Peronosclerospora sorghi in the kernels. Seed transmission of downy mildew of maize was demonstrated when grain purchased at local markets gave mea...
Weekly Prostephanus truncatus (Horn) ßight activity, measured as the density of captured beetles in pheromone baited traps, was monitored for 76 consecutive weeks at 16 sites inside the Lama forest in southern Benin and at four sites in maize farmland just outside the forest. Prostephanus truncat...
Nansen, C.
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Meikle, W.G.
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Korie, S.
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[Spatial analysis of Prostephanus truncatus (Horn) (Coleoptera:Bostrichdae) flight activity near maize stores and in different forest types in southern Benin, West Africa]
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Spatial analysis of Prostephanus truncatus (Horn) (Coleoptera:Bostrichdae) flight activity near maize stores and in different forest types in southern Benin, West Africa