Maize improvement at the International Institute of Tropical Agriculture (IITA), which began in the 1970s, built on the germplasm and experience of earlier years. The main breeding emphasis was to develop maize cultivars and hybrids with high yield potential and durable resistance to diseases and...
Kamara, A.Y.
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Menkir, A.
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Fakorede, M.A.B.
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Ajala, S.O.
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Badu-Apraku, B.
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Kureh, I.
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[Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa]
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Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa
Drought occurrence and striga hermonthica (Del.) Benth infestation are formidable maize (Zea mays L.) production constriants in the savanna zones of West and Central Africa (WCA). The West and Central Africa collaborative Maize Research Network (WECAMAN), in collaboration with the International I...
Badu-Apraku, B.
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Fakorede, M.A.B.
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Menkir, A.
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Kamara, A.Y.
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Akanvou, L.
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Chabi, Y.
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[Response of early maturing maize to multiplestresses in the Guinea savanna of West and Central Africa]
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Response of early maturing maize to multiplestresses in the Guinea savanna of West and Central Africa
Deficiencies of sulphur (S), copper (Cu) and zinc (Zn) are becoming prevalent under intensifying agricultural systems in north-eastern Nigeria. They are manifest in the partial or lack of response by crops to NPK fertilizers leading to a reduction in crop quality and yields. Data were collected o...
Kwari, J.D.
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Kamara, A.Y.
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Ekeleme, F.
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Omoigui, L.O.
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[Relation of yields of soybean and maize to sulphur, zinc and copper status of soils under intensifying cropping systems in the tropical savannas of northeast Nigeria]
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Relation of yields of soybean and maize to sulphur, zinc and copper status of soils under intensifying cropping systems in the tropical savannas of northeast Nigeria
This study evaluated the response of four rain-fed lowland New Rice for Africa (NERICA) varieties (NERICA-L-12, NERICA-L-41, NERICA-L-42 and NERICA-L-56) and a popularly grown Oryza sativa (ITA 150) to nitrogen (0, 30, and 100 kg N ha-1). The interactions between nitrogen and variety were not sig...
Kamara, A.Y.
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Ekeleme, F.
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Omoigui, L.O.
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Chikoye, D.
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[Influence of nitrogen fertilization on yield and yield components of rainfed lowland NERIC rice in the northern Guinea savanna of Nigeria]
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Influence of nitrogen fertilization on yield and yield components of rainfed lowland NERIC rice in the northern Guinea savanna of Nigeria
A number of improved varieties have been developed by the International Institute of Tropical Agriculture (IITA), combining diverse plant type with resistance or tolerance to several diseases, insect pests, and parasitic weeds and possessing other good agronomic traits. Trials were established wi...
Kamara, A.Y.
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Ellis-Jones, J.
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Ekeleme, F.
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Omoigui, L.O.
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Amaza, P.
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Chikoye, D.
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Dugje, I.Y.
,
[A participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria]
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A participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria
CERES-Maize model was used to determine nitrogen fertilizer requirements of early maturing maize varieties in the Sudan Savanna. Data were collected from 2013 and 2014 field experiments conducted in BUK Nigeria. The experiments consisted of 3 nitrogen fertilizer levels (0, 60, and 120 Kg N ha−1) ...
Adnan, A.A.
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Jibrin, J.M.
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Kamara, A.Y.
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Abdulrahman, B.L.
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Shaibu, A.S.
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[Using ceres-maize model to determine the nitrogen fertilization requirements of early maturing maize in the sudan savanna of Nigeria]
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Using ceres-maize model to determine the nitrogen fertilization requirements of early maturing maize in the sudan savanna of Nigeria
Striga hermonthica (L) Moench, a parasitic weed species, is a major constraint to sorghum production in the savanna zones of north-eastern Nigeria. The aim of this study was to assess the influence of farmer practices on Striga infestation of sorghum fields in the region. Random sampling techniqu...
Historically, conventional breeding has been the primary strategy used to develop a number of Striga-resistant varieties currently grown in the Sahel of Western Africa. In this study, we have successfully developed and applied a marker-assisted selection strategy that employs a single backcross p...
Omoigui, L.O.
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Kamara, A.Y.
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Moukoumbi, Y.D.
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Ogunkanmi, L.A.
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Timko, M.P.
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[Breeding cowpea for resistance to striga gesnerioides in the Nigerian dry savannas using marker-assisted selection]
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Breeding cowpea for resistance to striga gesnerioides in the Nigerian dry savannas using marker-assisted selection
Eighteen S1 lines of maize (Zea mays L.) derived from a low nitrogen tolerant pool and two inbred lines were evaluated for agronomic performance under moderate N conditions in the southern Guinea savannah of Nigeria. Generally, the breeding lines differed in yield, growth, vertical rootpulling re...
Kamara, A.Y.
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Kling, J.G.
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Menkir, A.
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Ibikunle, O.
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[Agronomic performance of maize (Zea mays L.) breeding lines derived from a low nitrogen maize population]
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Agronomic performance of maize (Zea mays L.) breeding lines derived from a low nitrogen maize population
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.
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Menkir, A.
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Badu-Apraku, B.
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Ibikunle, O.
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[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