A 2-year field study was conducted to assess the effect of weed competition on the performance ofupland rice cultivars in the savannas of Nigeria. A split-plot design was used with three weeding levels asthe main plot treatments and the rice cultivars CG 14, ITA 150, WAB 56-104, NERICA1, NERICA2,...
Ekeleme, F.
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Kamara, A.Y.
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Oikeh, S.O.
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Omoigui, L.O.
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Amaza, P.
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Abdoulaye, Tahirou
,
Chikoye, D.
,
[Response of upland rice cultivars to weed competition in the savannas of West Africa]
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Response of upland rice cultivars to weed competition in the savannas of West Africa
Cowpea is an important food crop in the dry savannas of West and Central Africa because of its high protein content. Yields are, however, considerably reduced by the parasitic angiosperm Striga gesnerioides. Field trials over 2 years in two localities in northeast Nigeria evaluated the performanc...
Kamara, A.Y.
,
Chikoye, D.
,
Ekeleme, F.
,
Omoigui, L.O.
,
Dugje, I.Y.
,
[Field performance of improved cowpea varieties under conditions of natural infestation by the parasitic weed Striga gesnerioides]
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Field performance of improved cowpea varieties under conditions of natural infestation by the parasitic weed Striga gesnerioides
The cultivation of soybean is increasing in the savannas of Nigeria due to its widespread use in the food and feed industry. Production is, however, constrained by low soil phosphorus (P) levels in northeast Nigeria. This study evaluated four soybean varieties for their response to three rates of...
Kamara, A.Y.
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Abaidoo, R.C.
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Kwari, J.
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Omoigui, L.O.
,
[Influence of phosphorus application on growth and yield of soybean genotypes in the tropical savannas of northeast Nigeria]
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Influence of phosphorus application on growth and yield of soybean genotypes in the tropical savannas of northeast Nigeria
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...
In the dry savannas of West Africa, cultivation of upland rice (Oryza spp.) under rain-fed conditions is expanding due to the introduction of the New Rice for Africa (NERICA; WARDA, Bouake, Cote d'Ivoire) but appropriate N recommendations for these new cultivars are lacking. The present study eva...
Kamara, A.Y.
,
Ekeleme, F.
,
Omoigui, L.O.
,
Oikeh, S.O.
,
Chikoye, D.
,
Tegbaru, A.
,
[Response of upland rice cultivars to nitrogen fertilizer in the savannas of Nigeria]
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Response of upland rice cultivars to nitrogen fertilizer in the savannas of Nigeria
Breeding for resistance to Striga can be done effectively under high and uniform artificial field infestation. To identify Striga tolerantresistant maize genotypes, it is essential to artificially inoculate every hill of maize in the breeding nursery with Striga seeds. The present method of inocu...
Ibikunle, O.A.
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Menkir, A.
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Kamara, A.Y.
,
Ajeigbe, Hakeem A.
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Smith, M.A.
,
[Evaluation of artificial field infestation techniques with Striga Hermonthica for resistance screening in maize (Zea mays L.)]
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Evaluation of artificial field infestation techniques with Striga Hermonthica for resistance screening in maize (Zea mays L.)
Striga is a major constraint to crop productivity in the savanna zones of northeast Nigeria. In a community livelihood survey, farmers in the region ranked Striga infestation as the topmost priority constraint. A field survey was, therefore, conducted to assess the level of field infestation by S...
Dugje, I.Y.
,
Kamara, A.Y.
,
Omoigui, L.O.
,
[Assessment of striga infestation in crop fields in the savanna zones of northeast Nigeria]
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Assessment of striga infestation in crop fields in the savanna zones of 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.
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Badu-Apraku, B.
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Ibikunle, O.
,
[Reproductive and staygreen trait response of maize hybrids, improved openpollinated varieties, and farmers local varieties to terminal drought stress]
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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.
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Lawan, B.A.
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Jibrin, J.M.
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Kamara, A.Y.
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Mohammed, I.B.
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Rurinda, J.
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Zingore, S.
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Craufurd, P.
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Vanlauwe, Bernard
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Adam, A.M.
,
Merckx, R.
,
[Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model]
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Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model
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.
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Ewansiha, S.U.
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Ajeigbe, Hakeem A.
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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