Resultados de búsqueda - "Nigeria"

First report of the occurrence of African cassava mosaic virus in a mosaic disease of soybean in Nigeria por Mgbechi-Ezeri, J.U., Alabi, O.J., Naidu, R.A., Kumar, P. Lava

“…Link belonging to Leguminasae from Nigeria (1,3). During reconnaissance studies conducted on soybean (Glycine max L. …”
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Identification of hazards and critical control point (CCP) for cassava fufu processing in South West Nigeria por Obadina, A.O., Oyewole, O.B., Sanni, Lateef O., Tomlins, Keith I., Westby, Andrew

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Gains from highyielding varieties with and without complementary technologies: the case of improved cowpea in northern Nigeria por Alene, Arega D., Manyong, Victor M.

“…This paper examines the adoption and impact of selective and whole package adoption of improved cowpea involving new variety, insect control, fertilizer, and best bet cropping pattern in northern Nigeria. A farm income model that explicitly accounts for endogenous technology adoption was used to assess the impacts. …”
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Influence of time of harvest on the yield and sensory attributes of white yam (Dioscorea rotundata) in Southwest Nigeria por Akinwande, B., Asiedu, Robert, Adeyemi, I., Maziya-Dixon, B.B.

“…Setts from five land race varieties of white yam (Dioscorea rotundata) at their post-dormant stage were planted at the beginning of the rainy season in 2003 at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. Harvesting was done at monthly intervals from three to seven months after vine emergence (MAVE) to determine the best time to harvest these varieties with respect to yield and food quality. …”
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Farmers perceptions of the speargrass (Imperata cylindrica) problem and its control in the lowland subhumid savannah of Nigeria por Chikoye, David, Ellis-Jones, J., Tarawali, G., Kormawa, P.M., Nielsen, O., Ibana, S., Avav, T.

“…Data were collected from 41 communities in Cross River, Kogi and BenueStates in Nigeria using rural rapid appraisal techniques. The objectives were to assess the importance of agriculture in the livelihoods of eachcommunity, identify priority crops, assess perceptions of the speargrass problem, identify existing speargrass control strategies and localinstitutions/farmers with the capacity to implement speargrass control trials. …”
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Risk aversion and sustainable maize production in Nigeria: some challenges and prospects for agricultural and economic development por Manyong, Victor M., Olarinde, L.

“…This paper determines the degree or extent of farmer’s risk aversion that affects sustainable maize production in Northern Nigeria. Using a ridge regression analysis, a measure of risk aversion was derived for each individual farmer in a model of safety-first behaviour from a cross-sectional survey of 350 maize producers in northern Nigeria. …”
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Micronutrient value and contribution of plantainderivrd foods to daily intakes of iron, zinc and betacartene in southern Nigeria por Honfo, F., Hell, K., Coulibaly, O., Tenkouano, A.

“…A survey was carried out in the Abia, Akwa-Ibom, Edo, and Ogun, States of Southern Nigeria, targeting their capital cities, i.e., Umuahia, Uyo, Benin City, and Abeokuta, respectively. …”
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Comparison of transmission abilities of four Cicadulina species vectors of maize streak virus from Nigeria por Oluwafemi, S., Jackai, L.E.N., Alegbejo, M.D.

“…Four Cicadulina species [Cicadulina arachidis China, Cicadulina dabrowskii Webb, Cicadulina mbila (Naude), and Cicadulina storeyi China (Homoptera: Cicadellidae)] found during field surveys in 1997–1999 across five ecological zones in Nigeria were reared in screenhouses and females were used in a study to compare their abilities to transmit Maize streak virus (Geminiviridae: genus Mastrevirus) from maize to maize using the susceptible variety Pool 16. …”
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Endogenous technology adoption and household food security: the case of improved cowpea varieties in northern Nigeria por Alene, A., Manyong, Victor M.

“…This paper examined the impact of improved cowpea varieties on household food security in northern Nigeria using the method of instrumental variables to account for endogenous technology adoption. …”
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Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria por Ariyo, O., Dixon, A., Atiri, G.

“…A range of new cassava elite clones were therefore assessed for the whitefly infestation in the 1999/2000 and 2000/2001 cropping seasons in experimental fields of International Institute of Tropical Agriculture, Ibadan, Nigeria. On each scoring day, between 0600 and 0800 hours when the whiteflies were relatively immobile, adult whitefly populations on the five topmost expanded leaves of cassava cultivars were counted. …”
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Typology of households adopting improved soybean technology: an application of the discriminant analysis model in northern Nigeria por Ojiako, I.A., Manyong, Victor M., Ikpi, A.

“…A two-stage typology of adopters and non-adopters of improved soybean varieties introduced to farmers in northern Nigeria was investigated using the discriminant analysis model. …”
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Genetic variation and genotype X environment interaction for yield and other agronomic traits in cassava in Nigeria por Egesi, Chiedozie N., Ilona, Paul, Ogbe, F.O., Akoroda, M.O., Dixon, A.

“…We identified optimally adapted genotypes for commercial cassava production in different areas in Nigeria.…”
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Indigenous seed production and distribution strategies in northern Guinea savannah Nigeria: opportunities for herbaceous legumes por Ajaero, J.O, Asiabaka, C.C., Haan, Nicoline C. de

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Setting strategic agricultural research priorities based on potential impacts on poverty reduction: the case of Nigeria por Alene, Arega D., Manyong, Victor M., Tollens, E.F., Abele, S.

“…This paper assessed the potential impacts of alternative commodity research programs on poverty reduction and identified strategic agricultural research priorities in three agroecological zones of Nigeria. The paper discusses the poverty reduction-based priorities and their role in sharpening the focus of agricultural research to achieve poverty reduction objectives in Nigeria.…”
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Farmers’ perceptions of crop pest severity in Nigeria are associated with landscape, agronomic and socio-economic factors por Zhang, Wei, Kato, Edward, Bianchi, Felix J.J.A., Bhandary, Prapti, Gort, Gerrit, Werf, Wopke van der

“…The paper adds new evidence on the relationship between different production situation characteristics and pest severity for Nigeria, based on which policy implications are discussed.…”
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Effect of method of Imperata cylindrica management on maize grain yield in the derived savanna of southwestern Nigeria por Akobundu, I., Ekeleme, F.

“…Field studies were conducted in 1991 and 1992 on a sandy loam soil in the derived savanna zone of south-western Nigeria to assess the effect of the underground organs of Imperata cylindrica (L.) …”
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Seed yam (Dioscorea rotundata Poir) production, storage, and quality in selected yam zones of Nigeria por Asiedu, Robert, Akoroda, M.O., Aighewi, B.A.

“…Current production and storage practices, as well as quality of seed yams in 35 villages of Oyo North, Asaba, Lokoja, and Lafia areas of the yam belt of Nigeria were studied in a survey involving 299 farmers that were interviewed using a questionnaire. …”
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Genotypic variability for cassava tuberous root development in two lowaltitude and midaltitude savanna sites of Nigeria por Akparobi, S.O., Ekanayake, I.J., Togun, A.

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Cassava production in Nigeria: a function of farmer access to markets and to improved production and processing technologies por Nweke, F., Ugwu, B., Dixon, A., Asadu, C., Ajobo, O.

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Effect of planting methods and soil moisture on cassava performance in the semiarid Sudan savanna belt of Nigeria por Okogbenin, Emmanuel, Ekanayake, I.J., Porto, M.C.M.

“…Results showed that cassava performance in the Sudan savanna of Nigeria was influenced by genotype, planting methods and soil moisture. …”
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