Cowpea is a major food and cash crop in northern Nigeria, providing nutritious grain and a less expensive source of protein for both the rural poor and urban consumers. A number of improved varieties have been developed combining diverse plant type, and different maturity periods, with resistance...
Kamara, A.Y.
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Omoigui, L.O.
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Ewansiha, S.U.
,
[Improving the productivity of cowpea in the savannas of northeast Nigeria through participatory evaluation and dissemination of improved varieties]
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Improving the productivity of cowpea in the savannas of northeast Nigeria through participatory evaluation and dissemination of improved varieties
A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently release...
Kamara, A.Y.
,
Ewansiha, S.U.
,
Ajeigbe, Hakeem A.
,
Okechukwu, R.U.
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Tefera, H.
,
Boukar, O.
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Omoigui, L.O.
,
[Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades]
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Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades
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.
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Omoigui, L.O.
,
Ewansiha, S.U.
,
Ekeleme, F.
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Chikoye, D.
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Ajeigbe, Hakeem A.
,
[Performance of semideterminate and indeterminate cowpeas relaycropped into maize in Northeast Nigeria]
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Performance of semideterminate and indeterminate cowpeas relaycropped into maize in Northeast Nigeria
A field trial was conducted during the rainy seasons of 2008 and 2009 at Samaru in northern Guinea savannah of Nigeria to determine the performance of semi-determinate and indeterminate cowpea cultivars intercropped with extra early, early and late maize cultivars. The trial was laid out in a ran...
Ewansiha, S.U.
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Kamara, A.
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Onyibe, J.E.
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[Performance of cowpea cultivars when grown as an intercrop with maize of contrasting maturities]
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Performance of cowpea cultivars when grown as an intercrop with maize of contrasting maturities
Cowpea-maize intercropping causes low yields of cowpea due to shading effect by maize plants. Staggering of dates of planting of cowpea in an intercrop is a potential way of reducing intercrop shading while increasing cowpea yield. Nonetheless, contrasting cowpea cultivars may have differential r...
Ewansiha, S.U.
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Kamara, A.
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Chiezey, U.F.
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Onyibe, J.E.
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[Agronomic responses of diverse cowpea cultivars to planting date and cropping system]
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Agronomic responses of diverse cowpea cultivars to planting date and cropping system
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.
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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
Herbaceous legumes are becoming increasingly important for the crop-livestock farming systems in the moist and semi-arid regions of West Africa as these crops cover the ground quickly, check erosion, contribute to soil fertility and provide nutritious food and fodder to human beings and livestock...
Ewansiha, S.U.
,
Singh, B.
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[Relative drought tolerance of important herbaceous legumes and cereals in the moist and semiarid regions of West Africa]
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Relative drought tolerance of important herbaceous legumes and cereals in the moist and semiarid regions of West Africa
A field study was conducted to determine the rate of genetic improvement in grain and fodder yields and associated agronomic and physiological changes of determinate and semideterminate cowpea [Vigna unguiculata (L.) Walp.] genotypes developed in the Nigerian Sudan savannas in 1974 to 2004. Resul...
Kamara, A.Y.
,
Tefera, H.
,
Ewansiha, S.U.
,
Ajeigbe, Hakeem A.
,
Okechukwu, R.U.
,
Boukar, O.
,
Omoigui, L.O.
,
[Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades]
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Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades
A preliminary trial was conducted to determine if there were variabilities in seedling morphology of selected cowpea varieties and determine their heritability with aim that this could be used in future cowpea breeding for selection at seedling stage. The characters studied include hypocotyl, epi...
Ajeigbe, Hakeem A.
,
Ewansiha, S.U.
,
Singh, B.B.
,
[Preliminary evaluation of genetic variability for seedling morphology among selected varieties of cowpea [Vigna unguiculata (L.) Walp.]]
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Preliminary evaluation of genetic variability for seedling morphology among selected varieties of cowpea [Vigna unguiculata (L.) Walp.]
Maize cultivation has recently expanded to the West African Sudan savannah and has the potential to play a key role
in the cropping systems of the region where intercrop yields have been low. Staggering planting date and
manipulating plant population of component crops are potential ways to impro...
Ewansiha, S.U.
,
Kamara, A.
,
Chiezey, U.F.
,
Onyibe, J.E.
,
[Response of cowpea to sowing date and maize plant population in a Sudan savannah environment]
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Response of cowpea to sowing date and maize plant population in a Sudan savannah environment