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.
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Kamara, A.Y.
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Omoigui, L.O.
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[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
Phosphorus is important for cowpea production in many tropical African soils with inherent low P fertility. Most farmers in Africa, however, do not have access to P fertilizer. Selection of cowpea lines that produce good yield under low soil P or those with high P-use efficiency can be a low inpu...
Kolawole, G.O.
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Tian, G.
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Singh, B.B.
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[Differential response of cowpea lines to application of P fertilizer]
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Differential response of cowpea lines to application of P fertilizer
Because of their favourable hydrology, the small inland valleys of West Africa offer the possibility of sustainable increases in food crop production. A key component in any sustainable cropping system is the maintenance or restoration of soil fertility. This paper explores avenues for introducin...
Carsky, R.J.
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Ajayi, E.O.
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[Fitting soilimproving legumes into inland valley ricebased cropping systems in West Africa]
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Fitting soilimproving legumes into inland valley ricebased cropping systems in West Africa
The contribution of cowpea to food security and poverty reduction can be substantial in West Africa if both biological and socioeconomic constraints are addressed. While some attention has been given to genetics, agronomy, and pest control, such economic issues as access to input, marketing, and ...
Success in breeding for cowpea with drought tolerance has not been as pronounced as for many other traits. This is partly due to lack of simple, cheap, and reliable screening methods to select drought-tolerant plants and progenies from the segre gating populations and partly due to the complexity...
On-farm trials were conducted at Kaduna in the northern Guinea savanna of Nigeria in 1996 and 1997. The objective was to investigate the residual effects of Mucuna and cowpea grown during the first 2-3months of the season on subsequent maize yields, to elicit farmers' feedback on these cropping s...
Oyewole, B.
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Carsky, R.J.
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Schulz, S.
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[Onfarm testing of Mucuna and cowpea double cropping with maize in the Guinea savanna of Nigeria]
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Onfarm testing of Mucuna and cowpea double cropping with maize in the Guinea savanna of Nigeria
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.
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Ajeigbe, Hakeem A.
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[Improving cowpea cereals based cropping systems in the dry savannas of West Africa]
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Improving cowpea cereals based cropping systems in the dry savannas of West Africa
Considerable progress has been made in breeding improved cowpea varieties in the last five years. The major breeding objectives were to develop high yielding cowpea varieties for sole cropping as well as intercropping with acceptable seed types and resistance to major diseases, insect pests, nema...
A number of recent studies have added further information on the genetics of important traits in cowpea. These include inheritance of qualitative traits such as plant pigmentation; flower color; seed color; seed coat texture; resistance to rust, scab, smut, nematode, severe mosaic virus, Striga, ...
Ortiz, R.
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Ekanayake, I.J.
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Mahalakshmi, V.
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Kamara, A.
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Menkir, A.
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Nigan, S.N.
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Singh, B.B.
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Saxena, N.P.
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[Development of drought resistant and water stress tolerant crops through traditional breeding]
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Development of drought resistant and water stress tolerant crops through traditional breeding