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.
,
Omoigui, L.O.
,
Ewansiha, S.U.
,
[Improving the productivity of cowpea in the savannas of northeast Nigeria through participatory evaluation and dissemination of improved varieties]
,
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.
,
Tefera, H.
,
Boukar, O.
,
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]
,
Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades
Dugje, I.Y.
,
Ekeleme, F.
,
Kamara, A.Y.
,
Omoigui, L.O.
,
Tegbaru, A.
,
Teli, I.A.
,
Onyibe, J.E.
,
[Guide to safe and effective use of pesticides for crop production in Borno State, Nigeria]
,
Guide to safe and effective use of pesticides for crop production in Borno State, Nigeria
Dugje, I.Y.
,
Onyibe, J.F.
,
Ekeleme, F.
,
Kamara, A.Y.
,
Tegbaru, A.
,
Omoigui, L.O.
,
Bassi, S.A.
,
[Guide to certified seeds production in Borno State, Nigeria]
,
Guide to certified seeds production in Borno State, Nigeria
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.
,
Kamara, A.Y.
,
Moukoumbi, Y.D.
,
Ogunkanmi, L.A.
,
Timko, M.P.
,
[Breeding cowpea for resistance to striga gesnerioides in the Nigerian dry savannas using marker-assisted selection]
,
Breeding cowpea for resistance to striga gesnerioides in the Nigerian dry savannas using marker-assisted selection
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
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
Striga gesnerioides is considered a major constraint to improving cowpea productivity in the semi arid region of Africa. A field survey was conducted in a farmer participatory process in 100 cowpea fields to determine farmers’ crop production practices that influence infestation by the parasitic ...
Dugje, I.Y.
,
Kamara, A.Y.
,
Ekeleme, F.
,
[Evaluation of farmers crop production practices that determine Striga gesnerioides infestation of cowpea fields in Nigerian savannas]
,
Evaluation of farmers crop production practices that determine Striga gesnerioides infestation of cowpea fields in Nigerian savannas
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]
,
Field performance of improved cowpea varieties under conditions of natural infestation by the parasitic weed Striga gesnerioides
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...