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Cowpea is an important protein source for human populations in many nations across sub-Saharan Africa (SSA). However, cowpea production is constrained by bacterial blight (CoBB) caused by Xanthomonas axonopodis pv. vignicola (Xav), a disease affecting most cowpea-growing areas. A large proportion...


Durojaye, H.A.Moukoumbi, Y.D.Dania, V.O.Boukar, O.Bandyopadhyay, RanajitOrtega-Beltran, A.[Evaluation of cowpea (Vigna unguiculata (L.) Walp.) landraces to bacterial blight caused by Xanthomonas axonopodis pv. vignicola]Evaluation of cowpea (Vigna unguiculata (L.) Walp.) landraces to bacterial blight caused by Xanthomonas axonopodis pv. vignicola

Cowpea [Vigna unguiculata (L.) Walp.] plays an important role in the livelihoods of the people of sub-Saharan Africa, but phosphorus (P) deficiency in soils is a serious problem that contributes to low productivity. This study was conducted to verify the efficiency of indigenous rock phosphate (R...


Suzuki, K.Fatokun, C.A.Boukar, O.[Responses of cowpea genotypes to indigenous rock phosphate application]Responses of cowpea genotypes to indigenous rock phosphate application

omparative analysis of preferences and key criteria for selecting cowpea (Vigna unguiculata L. Walp.) varieties was conducted using the data collected from farmers’ participatory varietal selection (FPVS) activities conducted over 3 years with a total of 2401 farmers (1230 male and 1171 female) i...


Ishikawa, H.Drabo, I.Joseph, B.B.Muranaka, S.Fatokun, C.Boukar, O.[Characteristics of farmers’ selection criteria for cowpea (Vigna unguiculata) varieties differ between north and south regions of Burkina Faso]Characteristics of farmers’ selection criteria for cowpea (Vigna unguiculata) varieties differ between north and south regions of Burkina Faso

Cowpea is an important crop for food security, as it is a primary source of protein and cash income for farmers in the dry savanna areas of Sub-Saharan Africa. Improved varieties should contain reasonable amounts of protein in the grains, and to ensure this, timely and cost-effective analytical m...


Ishikawa, H.Boukar, O.Fatokun, C.A.Shono, M.Muranaka, S.[Development of calibration model to predict nitrogen content in single seeds of cowpea (Vigna unguiculata) using near infrared spectroscopy]Development of calibration model to predict nitrogen content in single seeds of cowpea (Vigna unguiculata) using near infrared spectroscopy

Cowpea is traditionally important as an affordable source of protein and minerals and of cash income in sub-Saharan Africa, especially for small-scale farmers who have limited options for food and cash crops. The development and deployment of cowpea varieties with improved nutrition and quality t...


Muranaka, S.Shono, MMyoda, T.Takeuchi, J.Franco, J.Nakazawa, Y.Boukar, O.Takagi, H.[Genetic diversity of physical, nutritional and functional properties of cowpea grain and relationships among the traits]Genetic diversity of physical, nutritional and functional properties of cowpea grain and relationships among the traits

The parasitic flowering plants Striga gesnerioides (Willd.) Vatke and Alectra vogelii (Benth.) are formidable cowpea production constraints in the West and Central African savanna. The two parasites cause substantial yield reduction in cowpea in the dry savannas. A field study was conducted to sc...


Omoigui, L.O.Kamara, A.Ishiyaku, M.Boukar, O.[Comparative responses of cowpea breeding lines to Striga and Alectra in the dry savanna of northeast Nigeria]Comparative responses of cowpea breeding lines to Striga and Alectra in the dry savanna of northeast Nigeria

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]Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades

Cowpea flower bud thrips causes about 80% yield losses in cowpea. Host plant resistance is the most easy and durable solution to the damaging effects caused by this insect. However, resistance to thrips is quantitatively inherited, thus less amenable through conventional breeding. The objective o...


Sobda, G.Boukar, O.Tongoona, P.B.Ayertey, J.Offei, K.S.[Quantitative trait loci (QTL) for cowpea resistance to flower bud thrips (Megalurothrips sjostedti Trybom)]Quantitative trait loci (QTL) for cowpea resistance to flower bud thrips (Megalurothrips sjostedti Trybom)

Parasitic weed, Striga gesnerioides is a major constraint to cowpea [Vigna unguiculata (L.) Walp.] productivity in West and Central Africa. Efforts are being made to identify major genes that determine the race specific resistances to S. gesnerioides in cowpea and to develop resistant varieties w...


Muranaka SFatokun, C.A.Boukar, O.[Stability of Striga gesnerioides resistance mechanism in cowpea under high- infestation level, low soil fertility and drought stresses]Stability of Striga gesnerioides resistance mechanism in cowpea under high- infestation level, low soil fertility and drought stresses

The study reveals the stakes of the triple baggingmethod, assesses farmer perception about thistechnology and identifies the factors determiningtheir perception. One of the most limiting factors ofcowpea production is the storage. To solve thisproblem, Purdue University Improved CowpeaStorage Pro...


Folefack, D.Sobda, A.Tengomo, S.Boukar, O.Abdoulaye, Tahirou[Vulgarisation de la methode du triple ensachage pour le stockage ameliore du niebe en zone sahelienne du Nord Cameroun: enjeux et perceptions paysannes]Vulgarisation de la methode du triple ensachage pour le stockage ameliore du niebe en zone sahelienne du Nord Cameroun: enjeux et perceptions paysannes

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