Resultados de búsqueda - "Nigeria"

A participatory adoption of improved crop technologies in the savannas of West Africa: empirical study from Borno, Nigeria por Amaza, P.S., Ellis-Jones, J., Kamara, A.Y., Helsen, J., Gaya, H.I.

“…A Participatory Impact assessment (PASS) was undertaken to evaluate the adoption of improved crop technologies by farmers in the savannas of Borno State, Nigeria. A total of 476 people including 288 men and 188 women participated in PASS. …”
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Farmers access to agricultural inputs and services in Nigeria: panacea to competitive and sustainable cassava production and agro-enterprise development por Asumugha, G.N., Tarawali, G., Dixon, Alfred G.O.

“…The principal emphasis of the cassava enterprise development project (CEDP) in Nigeria is to support economic opportunities through sustainable and competitive cassava production, marketing and agro-enterprise development. …”
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Household expenditure patterns in the rural areas of Oyo State, Nigeria: evidence of rural households vulnerability to food insecurity por Ogundapo, A.T., Manyong, Victor M., Kormawa, P.M., Fabiyi, Y.

“…Roots and tubers remain the major staples in Oyo State, Nigeria, but interestingly, poor households rely more on cereals and fruit and vegetables than rich households. …”
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Poverty and its determinants among farming households in West Africa: empirical evidence from Borno State, Nigeria por Amaza, P.S., Adejobi, A.O., Kwaghe, P.V.

“…The study examines the extent of poverty and its determinants among farming households in Borno State of Nigeria. Primary data were obtained from 1,998 farming households using well-structured questionnaires in 2004. …”
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Standard stake yield of 43 CMD cassava genotypes in 11 locations of Nigeria: implications for stem supply systems por Akoroda, M.O., Yomeni, M.O., Oyadiran, T.F., Dixon, A., Okoro, E.

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Reaction of white guinea yam (Dioscorea rotundata Poir.) genotypes to virus diseases in four agroecological zones in Nigeria por Odu, B.O., Asiedu, Robert, Shoyinka, S.A., Hughes, J.D.

“…Nineteen white yam (Dioscorea rotundata Poir.) genotypes were grown in four agroecological zones in Nigeria for 2 years to study their responses to yam virus diseases, and to investigate the influence of genotype × environment (G × E) interactions on their reactions to virus infection, using the Additive Main Effects and Multiplicative Interactions (AMMI) Statistical Model. …”
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Pathogenic and genetic variability among Colletotrichum gloeosporioides isolates from different yam hosts in the agroecological zones in Nigeria por Abang, Mathew M., Asiedu, Robert, Hoffmann, P., Wolf, G.A., Mignouna, Hodeba D., Winter, S.

“…Consistent with the above findings, we observed for the first time the Glomerella teleomorph on anthracnose-infected yam plants in Nigeria, indicating that sexual recombination might play an important role in anthracnose epidemics on yam. …”
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Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yamgrowing sites in Nigeria por Egesi, Chiedozie N., Ogunyemi, S., Asiedu, Robert

“…A randomised complete block experiment was conducted in the 1998 and 1999 cropping seasons in five major yam growing areas in the yam belt of Nigeria to evaluate the performance and yield stability of six genotypes of water yarn (Dioscorea alata L). …”
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Long term integrated soil fertility management in southwestern Nigeria: crop performance and impact on the soil fertility status por Vanlauwe, Bernard, Diels, J., Sanginga, Nteranya, Merckx, Roel

“…Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986–2002) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-trees) system on the other hand, all cropped annually with a maize–cowpea rotation. …”
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The effects of education on agricultural productivity under traditional and improved technology in northern Nigeria: an endogenous switching regression analysis por Alene, Arega D., Manyong, Victor M.

“…This paper estimates a more efficient version of an endogenous switching regression model to examine the effects of farmer education—schooling and extension contact—on cowpea production under traditional and improved technology in northern Nigeria. The results revealed significant productivity-enhancing effects of schooling and extension contact only under improved technology. …”
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Targeting agricultural research based on potential impacts on poverty reduction: strategic program priorities by agroecological zone in Nigeria por Alene, A., Manyong, Victor M., Tollens, E.F., Abele, S.

“…This paper assessed the potential impacts of alternative commodity research programs on poverty reduction in three agro-ecological zones of Nigeria and identified strategic agricultural research priorities in the three zones. …”
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Crop-livestock interaction in the savannas of Nigeria: nature and determinants of farmer decision to use manure for soil fertility maintenance por Chianu, Jonas N., Tsujii, H., Manyong, Victor M.

“…In Nigeria, increased land-use intensity has depressed the use of fallow for soil fertility restoration. …”
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Impact of agroecology on soil fertility status and cassava yield in Nigeria: 1: nutrient levels in soils growing cassava por Asadu, C., Nweke, F.

“…The soils of major cassava-growing areas of Nigeria were sampled at 0-20 and 20-40 depths in 1991. …”
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The Challenge of Governing Africa's New Agricultural Investment Landscapes: An Analysis of Policy Arrangements and Sustainability Outcomes in Ethiopia and Nigeria por Schoneveld, George C.

“…This paper examines the effectiveness of existing policy arrangements in managing these conflicts within two environmentally significant investment landscapes, the Oban-Korup Forest Block, Nigeria, and Lower Baro-Akobo River Basin, Ethiopia. …”
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Disease incidence and symptom expression of banana streak badnavirus on plantain somaclones (Musa spp., AAB Group) in Nigeria por Nwauzoma, A., Tenkouano, A., Daniel-Kalio, L.

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Trens in food crop yields under demographic pressure in subSaharan Africa: the case of cassava in Southeast Nigeria por Enete, A., Nweke, F., Okorji, E.

“…Research in 1973 attributed large cassava root yield differences among three villages in southeast Nigeria to equally large population density differences. …”
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Technical efficiency and impact evaluation differentials between the adopters and non-adopters of Nerica in the six baseline states in Nigeria por Obayelu, A.E., Adeoti, J.O., Dontsop Nguezet, Paul M.

“…It further analysed the impact of adoption of NERICA on area cultivated, output, yield, expenditure and total income of rice farmers in the NERICA baseline states in Nigeria. To achieve the objectives, it employed the descriptive statistics, stochastic production frontier and counterfactual outcomes framework of modern evaluation technique (the Local Average Treatment Effect) to analyse 621 rice farmers across the six NERICA baseline states in Nigeria in 2012. …”
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Defferentiated gender ownership of cassava fields and implications for root yield variations in small holder agriculture of southeast Nigeria por Enete, A.A., Nweke, F.I., Achike, A.I., Tollens, E.

“…Cassava root yields obtained from farmers' fields in three villages of southeast Nigeria were compared using separate ownership of fields by gender as a factor. …”
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Yield and Nuse efficiency of five tropical maize genotypes under different N levels in the moist savanna of Nigeria por Oikeh, S.O., Kling, J.G., Horst, Walter J., Chude, V.O.

“…Two field experiments were conducted during the 1993 and 1994 growing seasons at Samaru (7° 38' E; 11° 11' N), northern Nigeria, to evaluate N-use efficiency (kg grain per kg available soil N) and yield of 5 maize genotypes planted early in the season under five levels of N. …”
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Efficiency of Gryon fulviventris (Hymenoptera: Scelionidae) as an egg parasitoid of Clavigralla tomentosicollis Stal. (Hemiptera: Coreidae) in northern Nigeria por Asante, Stephen K., Jackai, L.E.N., Tamo, Manuele

“…Field surveys were conducted on cowpea and pigeon pea in 1995 and 1996 to assess the effect of indigenous egg parasitoids on populations of Clavigralla tomentosicollis Stål in northern Nigeria. From the egg masses of C. tomentosicollis, three species of Hymenoptera belonging to three families, namel Anastatus sp. …”
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