Descubre y comparte nuestro conocimiento público

Se han encontrado 19 recursos

Resultados de búsqueda

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.[Relative drought tolerance of important herbaceous legumes and cereals in the moist and semiarid regions of West Africa]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]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.]]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]Response of cowpea to sowing date and maize plant population in a Sudan savannah environment

Cereal-cowpea intercrops have a record of low yields in the West African savannah. Two potential ways to improve the yield of cowpea (Vigna unguiculata Walp), when grown with maize (Zea mays L.), is by manipulating the plant population of maize and using adapted cowpea cultivars. A field trial wa...


Ewansiha, S.U.Kamara, A.Chiezey, U.F.Onyibe, J.E.[Performance of cowpea grown as an intercrop with maize of different populations]Performance of cowpea grown as an intercrop with maize of different populations

Insect pests are major constraint to cowpea production in northern Nigeria causing yield losses up to 70%. Several cowpea varieties have been developed and delivered to farmers by IITA over the past four decades. These varieties have varying degrees of resistance to insect pest attacks. A field s...


Kamara, A.Ewansiha, S.U.Ajeigbe, Hakeem A.Omoigui, L.O.[Response of old and new cowpea varieties to insecticide spray regimes in the Sudan savanna of Nigeria]Response of old and new cowpea varieties to insecticide spray regimes in the Sudan savanna of Nigeria

Field study was conducted during the rainy seasons (July-November) of 2007, 2008, 2009 and 2010 at the Research Farm of the International Institute of Tropical Agriculture (IITA) Minjibir, Kano State, Nigeria; to compare responses of six cowpea varieties to tillage. The treatments consisted of ti...


Ewansiha, S.U.Udensi, U.E.Kamara, A.[Effect of tillage on the growth and yield of cowpea varieties in Sudan savanna agroecology of Northern Nigeria]Effect of tillage on the growth and yield of cowpea varieties in Sudan savanna agroecology of Northern Nigeria

The morphological and phenological variations in 46 accessions of Lablab purpureus were evaluated in 2000 and 2001 in Samaru, Zaria in the moist savanna zone of Nigeria. Accessions were classified into various groups according to plant structure, flowering time and pod and seed characters. Based ...


Ewansiha, S.U.Chiezey, U.F.Tarawali, Shirley A.Iwuafor, E.N.O.[Morpho-phenological variation in Lablab purpureus]Morpho-phenological variation in Lablab purpureus

Performance under sub-optimal nitrogen (N) conditions, of early maturing maize cultivars bred for tolerance to drought and Striga parasitism in the Nigerian savanna is not known. This study evaluated the tolerance of selected early maturing drought and Striga-tolerant maize cultivars to low N con...


Kamara, A.Ewansiha, S.U.Tofa, A.I.[Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions]Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso