The moist savannas of West and Central Africa have great potential for maize grain production due to high levels of radiation and reduced incidence of pests and diseases. However, soils in this zone are generally low in organic matter and cation exchange capacity in addition to land use intensifi...
Ajala, S.O.
,
Menkir, A.
,
Kamara, A.Y.
,
Alabi, S.O.
,
Abdulai, M.S.
,
[Breeding strategies to improve maize for adaptation to low soil nitrogen in West and Central Africa]
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Breeding strategies to improve maize for adaptation to low soil nitrogen in West and Central Africa
The risk of drought is high in the Sudan savannah zone of West and Central Africa because rainfall in this area is unpredictable in quantity and distribution. Thus, improved maize genotypes tolerant to drought could stabilize maize grain yield in this zone, where recurrent drought threatens grain...
Kamara, A.Y.
,
Menkir, A.
,
Badu-Apraku, B.
,
Ibikunle, O.
,
[The influence of drought stress on growth, yield, and yield components of some maize genotypes]
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The influence of drought stress on growth, yield, and yield components of some maize genotypes
Striga hermonthica parasitism is a major constraint limiting Sorghum productivity in the Nigerian savanna. Field experiments were conducted in 2005 and 2006 rainy seasons to evaluate the response of sorghum varieties to striga infestation. A randomised complete block design was used to screen 12 ...
Dugje, I.Y.
,
Ekeleme, F.
,
Kamara, A.Y.
,
Menkir, A.
,
Chikoye, D.
,
Omoigui, L.O.
,
[Field evaluation of sorghum varieties to Striga hermonthica infestation in north eastern Nigerian savannas]
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Field evaluation of sorghum varieties to Striga hermonthica infestation in north eastern Nigerian savannas
The success of most crop improvement programs largely depends upon the genetic variability and the heritability of desirable traits. The magnitude and type of genetic variability help the breeder to determine the selection criteria and breeding schemes to be used for improvement purposes. A scree...
The goal of this research was to evaluate diverse cowpea genotypes developed over the past 4 decades in the Nigerian
Sudan Savannas for their agronomic performance and to identify groups of cultivars with similar quantitative characters.
Characterization would facilitate the efficient synthesis o...
Kamara, A.Y.
,
Ewansiha, S.U.
,
Ajeigbe, Hakeem A.
,
Omoigui, L.O.
,
Tofa, A.I.
,
Karim, K.Y.
,
[Agronomic evaluation of cowpea cultivars developed for the West African Savannas]
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Agronomic evaluation of cowpea cultivars developed for the West African Savannas
Striga gesnerioides (Willd) Vatke, is a major destructive parasitic weed of cowpea (Vigna unguiculata (L.) Walp.) which causes substantial yield reduction in West and Central Africa. The presence of different virulent races within the parasite population contributes to significant genotype × envi...
Poor soil fertility, especially with low levels of nitrogen (N), is a major constraint to productivity and the production of maize in the Guinea Savanna of Nigeria. To improve efficiency of the maize to use N in the Savanna, maize genotypes with improved root systems to exploit the available N fr...
Kamara, A.Y.
,
Menkir, A.
,
Kureh, I.
,
Omoigui, L.O.
,
[Response to low soil nitrogen stress of S1 maize breeding lines selected for high vertical rootpulling resistance]
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Response to low soil nitrogen stress of S1 maize breeding lines selected for high vertical rootpulling resistance
Cowpea is an important food legume and versatile crop in the savannas of northeast Nigeria. Despite the high potential for production in this region, insect pests are a major constraint. A study was conducted to evaluate the response of diverse cowpea genotypes to different schedules of spraying ...
Kamara, A.Y.
,
Chikoye, D.
,
Omoigui, L.O.
,
Dugje, I.Y.
,
[Cultivar and insecticide spraying regimes effects on insect pests and grain yield of cowpea in the dry savannas of north-eastern Nigeria]
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Cultivar and insecticide spraying regimes effects on insect pests and grain yield of cowpea in the dry savannas of north-eastern Nigeria