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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.Menkir, A.Fakorede, M.A.B.Ajala, S.O.Badu-Apraku, B.Kureh, I.[Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa]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.Fakorede, M.A.B.Menkir, A.Kamara, A.Y.Akanvou, L.Chabi, Y.[Response of early maturing maize to multiplestresses in the Guinea savanna of West and Central Africa]Response of early maturing maize to multiplestresses in the Guinea savanna of West and Central Africa

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.Kling, J.G.Menkir, A.Ibikunle, O.[Agronomic performance of maize (Zea mays L.) breeding lines derived from a low nitrogen maize population]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.Menkir, A.Badu-Apraku, B.Ibikunle, O.[The influence of drought stress on growth, yield, and yield components of some maize genotypes]The influence of drought stress on growth, yield, and yield components of some maize genotypes

Weed seed bank size and composition were analysed in 1995 and 1996 in maize fields mulched with pruning from Gliricidia sepium, Leucaena leucocephala, and Senna siamea in South Western Nigeria. Plots mulched with pruning from the three trees had a lower weed seed bank in the first year of croppin...


Kamara, A.Y.Akobundu, I.O.Chikoye, D.Jutzi, S.C.[Weed seed bank size and composition in an arable crop mulched with pruning from three multipurpose trees in southwestern Nigeria]Weed seed bank size and composition in an arable crop mulched with pruning from three multipurpose trees in southwestern Nigeria

Cutting and carrying of mulch from established tree plots is an alternative to in situ mulch in agroforestry systems. Through the cut-and-carry method, the undesirable e ects of tree-crop competition characterized by in situ mulching can be avoided. An economic evaluation of the cut-and-carry met...


Kormawa, P.M.Kamara, A.Y.Jutzi, S.C.Sanginga, N.[Economic evaluation of using mulch from multipurpose trees in maizebased production systems in southwestern Nigeria]Economic evaluation of using mulch from multipurpose trees in maizebased production systems in southwestern Nigeria

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.Tofa, A.I.Ademulegun, T.Solomon, R.Shehu, H.Kamai, N.Omoigui, L.O.[Maize-soybean intercropping for sustainable intensification of cereal-legume cropping systems in northern Nigeria]Maize-soybean intercropping for sustainable intensification of cereal-legume cropping systems in northern Nigeria

Field trials were conducted in 2005 and 2006 in Tilla (northern Guinea savanna) and Sabon-Gari (Sudan savanna) in northeast Nigeria to determine the performance of two improved cowpea varieties when relay-intercropped with early and late maize, 6 and 8 weeks after planting the maize. Grain yield,...


Kamara, A.Y.Omoigui, L.O.Ewansiha, S.U.Ekeleme, F.Chikoye, D.Ajeigbe, Hakeem A.[Performance of semideterminate and indeterminate cowpeas relaycropped into maize in Northeast Nigeria]Performance of semideterminate and indeterminate cowpeas relaycropped into maize in Northeast Nigeria

In the dry savanna of West and Central Africa, where unpredictable rainfall and recurrent drought are major constraints to maize production, the development of tropical maize genotypes with high and sable yields under drought is very important since access to drought-tolerant genotypes may be the...


Kamara, A.Y.Menkir, A.Badu-Apraku, B.Ibikunle, O.[Reproductive and staygreen trait response of maize hybrids, improved openpollinated varieties, and farmers local varieties to terminal drought stress]Reproductive and staygreen trait response of maize hybrids, improved openpollinated varieties, and farmers local varieties to terminal drought stress

Establishing balanced nutrient requirements for maize (Zea mays L.) in the Northern Nigerian Savanna is paramount to develop site-specific fertilizer recommendations to increase maize yield, profits of farmers and avoid negative environmental impacts of fertilizer use. The model QUEFTS (QUantitat...


Shehu, B.M.Lawan, B.A.Jibrin, J.M.Kamara, A.Y.Mohammed, I.B.Rurinda, J.Zingore, S.Craufurd, P.Vanlauwe, BernardAdam, A.M.Merckx, R.[Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model]Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model

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