Resultados de búsqueda - "Nigeria"

Evaluating and scalingup integrated Striga hermonthica control technologies among farmers in northern Nigeria por Franke, A., Ellis-Jones, J., Tarawali, G., Schulz, S., Hussaini, M.A., Kureh, I., White, R., Douthwaite, Boru, Oyewole, B., Olanrewaju, A.S.

“…The results are presented of a project to promote integrated Striga control (ISC) technologies to farmers in the Guinea savanna of northern Nigeria. Extension agents used a participatory research and extension approach (PREA) to encourage farmers to test and adopt ISC technologies. …”
Enlace del recurso

Combining ability of diverse maize inbred lines under Striga infestation in Nigeria and Benin por Yallou, C., Menkir, A., Adetimirin, Victor O., Kling, J.

“…The ten lines were crossed in a diallel fashion and the resulting 45 single-cross hybrids were evaluated under artificial striga infestation at two locations each in Nigeria and Republic of Benin for two years. The results showed that general combining ability (GCA) mean squares were much larger than those for specific combining ability (SCN for grain yield under Striga infestation, Striga damage symptom score, and numbers of emerged Striga plants, indicating that for these traits, additive genetic effects were more important than non-additive effects. …”
Enlace del recurso

Diagnosis, occurrence and seed transmission studies of viruses infecting four Centrosema species in Nigeria por Odedara, O., Hughes, J., Ayo‐John, E.

“…In a survey to detect viruses affecting Centrosema species in two agroecological zones in Nigeria (the derived and northern guinea savanna zones: DSZ and NGSZ), enzyme-linked immunosorbent assay of leaf samples of four species (C. brasilianum, C. pascuorum, C. pubescens and C. macrocarpum) revealed infections of two Potyviruses – Bean common mosaic virus and Cowpea aphid-borne mosaic virus – and three Comoviruses – Cowpea mosaic virus, Cowpea severe mosaic virus and Bean pod mottle virus. …”
Enlace del recurso

Screening of new improved water yam (Dioscorea alata) genotypes for the preparation of amala in Nigeria por Ukpabi, U.J., Omodamiro, R.M., Ikeorgu, J.G., Asiedu, Robert

“…Production of improved water yam (Dioscorea alata) genotypes that are suitable for the preparation of amala (a popular darkish Nigerian food) would likely enhance the economic importance of the crop in Nigeria. Fermented flour (oven dried and sun dried) made from tubers of eight new improved D.alata genotypes (TDa 00/00364, TDa 00/00194, TDa 00/00103, TDa 00/00104, 99/00240, 99/01176, 98/01166, Um 680) and two landraces (TDa 92-2, Ominelu) were reconstituted into amala, and organoleptically evaluated. …”
Enlace del recurso

Evaluation of a new formulation of atrazine and metolachlor mixture for weed control in maize in Nigeria por Chikoye, David, Udensi, U.E., Lum, A.

“…Field studies were conducted in 2002 and 2003 at Ibadan, Nigeria, to evaluate the effects on weed control in maize of a new formulation of a mixture of atrazine and metolachlor. …”
Enlace del recurso

Economic analysis of balanced nutrient management technologies for maize production in Kaduna state, Nigeria por Omadachi, U.O., Ahmed, B., Manyong, Victor M., Olukosi, J., Yusuf, O.

“…This is through integrated nutrient management systems geared to land use practices which are economically viable, ecologically sound and socially acceptable. In Kaduna state of Nigeria (Northern Guinea Savannah), three improved maize-based technologies were tested in a series of farmer-managed field trials since 2000. …”
Enlace del recurso

Influence of phosphorus application on growth and yield of soybean genotypes in the tropical savannas of northeast Nigeria por Kamara, A.Y., Abaidoo, Robert C., Kwari, J., Omoigui, L.O.

“…The cultivation of soybean is increasing in the savannas of Nigeria due to its widespread use in the food and feed industry. …”
Enlace del recurso

Genetic and cropping system effects on yield and postharvest characteristics of Musa species in Southeastern Nigeria por Baiyeri, K., Tenkouano, A., Mbah, B., Mbagwu, J.

Enlace del recurso

Fertilizer use and definition of farmer domains for impactoriented research in the northern Guinea savanna of Nigeria por Manyong, Victor M., Makinde, K., Sanginga, N., Vanlauwe, Bernard, Diels, J.

“…The survey was carried out with 200 farmers carefully selected in two villages in the northern Guinea savanna of Nigeria. The results showed that more than 90% of farmers in both villages used chemical fertilizers. …”
Enlace del recurso

Population dynamics and migration of cowpea pests in northern Nigeria: implications for integrated pest management por Bottenberg, H., Tamo, Manuele, Arodokoun, D., Jackai, L.E.N., Singh, B., Youm, O.

“…The population dynamics of major cowpea pests was studied in northern Nigeria during 1992-95 in both the wet and dry seasons. …”
Enlace del recurso

Impacts of improved maize varieties in Nigeria: ex-post assessment of productivity and welfare outcomes por Abdoulaye, Tahirou, Assfaw Wossen, Tesfamicheal, Awotide, B.

“…This paper uses nationally representative plot- and household-level data from the major maize producing regions of Nigeria to assess the impacts of adoption of improved maize varieties on maize yield and household welfare outcomes. …”
Enlace del recurso

Vegetative compatibility among isolates of Colletotrichum gloeosporioides from yam (Dioscorea spp.) in Nigeria por Abang, Mathew M., Hoffmann, P., Winter, S., Green, K.R., Wolf, G.A.

“…Isolates of Colletotrichum gloeosporioides obtained from yam-based cropping systems in Nigeria, previously characterized on the basis of morphology, virulence and rDNA internal transcribed spacer (ITS) sequence variation were further compared for vegetative compatibility (VC). …”
Enlace del recurso

Release and establishment in Nigeria of Epidinocarsis lopezi, a parasitoid of the cassava mealybug, Phenacoccus manihoti por Lema, K.M., Herren, H.R.

“…It was mass‐reared and released at four localities in Nigeria. The parasitoid is now established and it is dispersing throughout cassava growing areas of Nigeria.…”
Enlace del recurso

Exante evaluation of nutrition and health benefits of biofortified cassava roots in nigeria: the dalys approach por Manyong, Victor M., Bamire, A., Sanusi, I., Awotide, D.

“…Results showed that Vitamin A deficiency (VAD) causes an annual loss of about 553,000 years of healthy life in Nigeria with children constituting more than forty percent. …”
Enlace del recurso

Growth of Gliricidia and Leucaena as affected by Rhizobium inoculation and N and P fertilizar application in Nigeria por Onafeko, O., Kang, B., Omueti, J.A.

“…Six field trials to determine the effects of rhizobium inoculation, and N and P fertilizer applications on the early growth of Gliricidia sepium and Leucaena leucocephala were conducted in farmers' fields at three sites: Alabata and Ajaawa located in the derived savanna of southwestern Nigeria and Zakibiam located in the southern Guinea zone of ease central Nigeria. …”
Enlace del recurso

Economic analysis of cutandcarry, and alley cropping systems of mulch production for plantains in southeastern Nigeria por Ruhigwa, B., Gichuru, M., Spencer, D., Swennen, Rony L.

Enlace del recurso

Poverty reduction effects of agricultural technology adoption: the case of improved cassava varieties in Nigeria por Assfaw Wossen, Tesfamicheal, Alene, A., Abdoulaye, Tahirou, Feleke, S., Rabbi, Ismail Y., Manyong, Victor M.

“…We use DNA‐fingerprinting to estimate the poverty reduction effect of adoption of improved cassava varieties in Nigeria. We estimate the counterfactual household income distribution of cassava producers by combining farm‐level treatment effects with a market‐level model. …”
Enlace del recurso

Notillage effects on soil properties and maize (Zea mays L. ) production in western Nigeria por Lal, R.

Enlace del recurso

Zinc response of maize (Zea mays L.) grown on sandy inceptisols in Western Nigeria por Osiname, O., Kang, B.T., Schulte, E.E., Corey, R.B.

“…Field experiments were conducted with IITA maize (Zea mays L.) composite B at six locations ranging from forest to savannah in the Western State of Nigeria to assess the level of zinc response on sandy Inceptisols. …”
Enlace del recurso

Inheritance of resistance to Stenocarpella macrospora (Earle) ear rot of maize in the midaltitude zone of Nigeria por Olatinwo, R., Cardwell, K., Menkir, A., Deadman, M.L., Julian, A.

“…Diplodia macrospora Earle) ear rot of maize was studied among selected maize populations in the mid-altitude (1280 m) agro-ecological zone of Nigeria. Diallel analysis among the populations showed significant values for general combining ability (GCA) and specific combining ability (SCA) effects at 5% and 1% levels respectively. …”
Enlace del recurso