Resultados de búsqueda - "West Africa"

Toxicity and gastric tolerance of essential oils from cymbopogon citratus, ocimum gratissimum and ocimum basilicum in wistar rats por Fandohan, P., Gnonlonfin, G.J.B., Laleye, A., Gbenou, J.D., Darboux, R., Moudachirou, M.

“…Recently in a study in West Africa, these oils have been recommended to combat Fusarium verticillioides and subsequent fumonisin contamination in stored maize, but their toxicological profile was not investigated. …”
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IMPACTLite Tool por International Livestock Research Institute

“…The survey was carried out in 15 of CCAFS benchmark sites in twelve countries across East Africa, West Africa and South Asia. The tool helps capture the diversity of farming activities and characterize the main agricultural production systems. …”
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The estimated ex ante economic impact of Bt cowpea in Niger, Benin and Northern Nigeria por Gbègbèlègbè, S.D., Lowenberg-Deboer, J., Adeoti, R., Lusk, J., Coulibaly, O.

“…The experiment involves the simulation of a market transaction similar to those in open air markets in West Africa. During the market simulation, respondents are informed about the advantages and disadvantages, including health risks, of Bt cowpea. …”
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Evaluation of early maturing cowpea (Vigna unguiculata) germplasm for variation in phosphorus use efficiency and biological nitrogen fixation potential with indigenous rhizobial po... por Abaidoo, Robert C., Dare, M.O., Killani, S., Opoku, A.

“…Cowpea genotypes that efficiently utilize phosphorus (P) with high potential for biological nitrogen (N) fixation (BNF) are vital to sustainable cropping systems in West Africa. A total of 175 early maturing cowpea genotypes were evaluated in 2010 and 2011 for P use efficiency (PUE) and BNF with an indigenous rhizobial population at Shika in the Northern Guinea savanna of Nigeria. …”
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Climate-Smart Village Approach in Nepal: Learning from Global, Regional and Local Knowledge por CGIAR Research Program on Climate Change, Agriculture and Food Security

“…Nearly 100 representatives from various CGIAR centers, development partners and CCAFS regions (Latin America, West Africa, East Africa, South Asia, and Southeast Asia) participated. …”
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Caracterización molecular para el manejo de la colección colombiana de musaceas por Sánchez, Inés, Gaviria Arias, Duberney, Gallego Sánchez, Gerardo J., Fajardo, Diego, Valencia Montoya, Jorge Alberto, Lobo Arias, Mario, Tohme, Joseph M., Roca, W.

“…Accessions containing the ABB genome showed different degrees of similarity allowing us to discriminate between Colombian accessions and those recently obtained from West Africa. Results obtained using AFLPs markers were used in conjunction with morphological descriptors, isozymes, agronomic traits and RAPDs markers in order to characterize in detail this Musa bank.…”
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Overview of soil conservation technologies and their perception by farmers in Nigeria por Junge, B., Deji, O.F., Abaidoo, Robert C., Chikoye, David, Stahr, Karl, Kirchhof, G.

“…In Nigeria, West Africa, soil degradation has been one of the most critical environmental problems for along time. …”
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Effect of planting date on incidence and damage by Sesamia calamistis (Lepidoptera: Noctuidae) in maize in southern Benin por Adda, C., Atachi, P., Hell, K., Korie, S., Tamo, Manuele

“…Stem and cob borers cause substantial damage to maize and affect the quality and economic value of maize in West Africa. Manipulation of planting dates is considered a possible mechanism for averting the overall impact of borers and their damage to the crop. …”
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Physiological suitability of six West African gramineous borers (Lepidoptera: Noctuidae, Pyralidae) for development of Cotesia species complex (Hymenoptera: Braconidae) por Hailemichael, Y., Schulthess, F., Smith, Jimmy W., Overholt, W.A.

“…It was concluded that because of its host specificity, the old association parasitoid C. sesamiae would have the highest chance of establishment in cereal systems in West Africa.…”
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Search for Scutellonema bradys resistance in yams (Dioscorea spp.) por Kwoseh, C.K., Plowright, R.A., Bridge, J., Asiedu, Robert

“…A study to examine variability in susceptibility of yams to Scutellonema bradys and to identify possible sources of resistance in Ghanaian yam germplasm (Dioscorea spp.) for use in yam improvement programmes, particularly, in West Africa was undertaken. Pot and field screening methodologies were used. …”
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Infestation of crop fields by Striga species in the savanna zones of northeast Nigeria por Dugje, I.Y., Kamara, A., Omoigui, L.O.

“…Parasitism of crop plants by Striga species is a major constraint in the savanna zones of West Africa. Farmers ranked Striga as a leading constraint during a livelihood analysis of 30 communities in northeast Nigeria. …”
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Impact of indigenous storage systems and insect infestation on the contamination of maize with fumonisin por Fandohan, P., Gnonlonfin, G.J.B., Hell, K., Marasas, W.F.O., Wingfield, M.

“…Four storage systems of maize commonly used by farmers in Benin, West Africa, were tested to determine their impact on infection of maize by Fusarium and subsequent contamination with fumonisins. …”
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Utilization of biological insecticides for the protection of stored yam chips por Vernier, Philippe, Georgen, G., Dossou, R., Letourmy, P., Chaume, J.

“…The processing of yam into dehydrated chips is used extensively in certain areas of West Africa to stabilize the product. However, the chips are often severely attacked by borers, which can reduce whole stocks to powder within a few months. …”
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Assessment of concentrations of iron and zinc and bioavailable iron in grains of earlymaturing tropical maize varieties por Oikeh, S.O., Menkir, A., Maziya-Dixon, B.B., Welch, R., Glahn, Raymond P.

“…Twenty elite early-maturing (75−90 days) tropical maize varieties grown in three diverse agroecologies in West Africa were evaluated to identify varieties with high kernel-Fe and -Zn and bioavailable Fe levels. …”
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Cowpea yield gain from resistance to Striga gesnerioides parasitism in southern Benin por Carsky, R.J., Akakpo, C., Singh, B.B., Detongnon, J.

“…S. gesnerioides in southern Bénin has been characterized as a race that is different from those found in the dry savanna of West Africa. IITA breeding line IT93KZ-4-5-6-1-5 was used in a trial to study fertilizer response of cowpea on two farmers' fields in 1998. …”
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The effects of an entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin (Hyphomycetes), on Prostephanus truncatus (Horn) (Col: Bostrichdae), Sitophilus zeamais (Col: Curc... por Meikle, W.G., Cherry, A.J., Holst, N., Hounna, B., Markham, R.H.

“…A fungal entomopathogen, Beauveria bassiana, was used to treat maize ears placed in traditional grain stores against Prostephanus truncatus in a field experiment conducted from September 1997 to March 1998 in the Benin Republic, West Africa. Treatments included oil-based spray with and without conidia, maize stored with and without the husk, and stores with and without artificial infestation. …”
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Response of maize and cassava to potassium fertilization and alley cropping with Leucaena leucocephala and Acacia auriculiformis por Akonde, T.P., Leihner, D.E., Kang, B.

“…Field trials were carried out on a Dystric Nitosol at Calavi in the subhumid zone of southern Benin Republic, West Africa from 1989-1997. A split plot design with four replications was used. …”
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Breeding cowpea varieties with combined resistance to Striga gesnerioides and Alectra vogelii por Singh, B.B.

“…Alectra is more prevalent in the northern Guinea savanna and southern Sudan savanna of West Africa, as well as in East and southern Africa whereas Striga is mostly found in West and Central Africa. …”
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Onfarm testing of Mucuna and cowpea double cropping with maize in the Guinea savanna of Nigeria por Oyewole, B., Carsky, R.J., Schulz, S.

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Profit-making businesswomen or (too) proud women and prostitutes? : change and continuity in the social practice of gender at Kiwira market, Tanzania por Wahlström, Nora

“…However, this topic suffers from an urban bias as well as a focus mainly on West Africa. The aim of this master thesis is to investigate the social practice of gender in and around a rural market in Tanzania- how these gendered practiced affect businesswomen’s opportunities- as well as how the women’s business activities form the basis of new practices and discourses. …”