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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

Grain yields of cowpea [Vigna unguiculata (L.) Walp.] in the Nigerian savannas are low even with the cultivation of improved varieties. The recommended spacing for cowpea is 75 × 20 cm with two seeds planted per stand. This corresponds to plant population of 133333 plants ha−1, which may not be s...


Kamara, A.Tofa, A.I.Kyei-Boahen, S.Solomon, R.Ajeigbe, Hakeem A.Kamai, N.[Effects of plant density on the performance of cowpea in Nigerian Savannas]Effects of plant density on the performance of cowpea in Nigerian Savannas

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

Cowpeas suffer major yield losses due to insect pests, so insect resistant cowpea varieties are being developed to minimize insecticide use in integrated pest management. Experiments during the cropping seasons of 2002–2004 at Kano, Nigeria, evaluated four cowpea varieties and five combinations o...


Ajeigbe, Hakeem A.Singh, B.B.[Integrated pest management in cowpea: effect of time and frequency of insecticide application on productivity]Integrated pest management in cowpea: effect of time and frequency of insecticide application on productivity

Cowpea is important for the provision of both grain for food and fodder for livestock but there is often a trade-off between productions of two. To better understanding influences on grain and fodder production, and how these may be influences on grain and fodder production, and two these may be ...


Tarawali, S.A.Singh, B.B.Fernández Rivera, S.Peters, M.Smith, J.W.Schultze-Kraft, RainerAjeigbe, Hakeem A.[Optimizing the contribution of cowpea to food and fodder production in croplivestock systems in West Africa]Optimizing the contribution of cowpea to food and fodder production in croplivestock systems in West Africa
Singh, B.Adeleke, R.Ajeigbe, Hakeem A.Olufajo, O.Ishiyaku, M.Mohammed, S.[Registration of six improved germplasm lines of cowpea with combined resistance to Striga gesnerioides and Alectra vogelii]Registration of six improved germplasm lines of cowpea with combined resistance to Striga gesnerioides and Alectra vogelii

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.Karim, K.Y.[Agronomic evaluation of cowpea cultivars developed for the West African Savannas]Agronomic evaluation of cowpea cultivars developed for the West African Savannas

Most of the farmers in the dry savannas of West Africa 'plant local varieties of cowpea, millet, sorghum, and groundnut in various intercropping systems with little or no purchased inputs. In this system, the cowpea and groundnut yields are low due to shading by cereals and lack of plant protecti...


Singh, B.B.Ajeigbe, Hakeem A.[Improving cowpea cereals based cropping systems in the dry savannas of West Africa]Improving cowpea cereals based cropping systems in the dry savannas of West Africa
Singh, B.Adeleke, R.Ajeigbe, Hakeem A.Olufajo, O.Ishiyaku, M.Mohammed, S.[Registration of NGVU0525 cowpea cultivar]Registration of NGVU0525 cowpea cultivar

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