Resultados de búsqueda - "West Africa"

Agricultural intensification as a strategy for climate mitigation in Ghana por Gockowski, J., Robiglio, Valentina, Muilerman, Sander, Agyeman, N.F.

“…In Ghana, as in many other tropical landscapes of West Africa, the expansion of extensive low input agriculture has resulted in significant deforestation with concomitant loss of biodiversity and greenhouse gas emissions. …”
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High resolution mapping of trypanosomosis resistance loci Tir2 and Tir3 using F12 advanced intercross lines with major locus Tir1 fixed for the susceptible allele por Ng'ang'a, J.K., Soller, M., Iraqi, F.A.

“…A number of trypanotolerant cattle breeds are found in West Africa, and identification of the genes conferring trypanotolerance could lead to effective means of genetic selection for trypanotolerance. …”
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Nutrient transfers from livestock in West African agricultural systems por Leeuw, P.N. de, Reynolds, L., Rey, B.

“…At a regional scale, focus is on Nigeria and on the cottonbelt in francophone West Africa. The Nigerian situation elucidates the relationships between livestock and land along the rainfall gradient and brings out the multiple interactions between settled smallholder farmers and more mobile agropastoral and transhumant herders. …”
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Host preference of tsetse: An important tool to appraise the Nagana risk of cattle in the cotton zone of Mali por Hoppenheit, A., Steuber, S., Bauer, B., Ouma, E.M., Diall, O., Zessin, K.H., Clausen, Peter-Henning

“…Nagana is routinely controlled by the use of trypanocides and an overreliance on their use throughout past decades resulted in multiple drug resistance of trypanosomes in most parts of West Africa's cotton belt. Designing alternative, effective vector control strategies requires an identification of the preferred hosts of tsetse flies through blood meal analysis as a prerequisite for estimating infection risk. …”
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Role of brokerage in evolving innovation systems: A case of the Fodder Innovation Project in Nigeria por Madzudzo, E.

“…This paper uses case studies from West Africa to illustrate that actors that play brokerage functions are critical in navigating around or dismantling the barriers and thus enhance innovation capacity. …”
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The impact of treadle pump irrigation technology adoption on poverty in Ghana por Adeoti, A.I., Barry, Boubacar, Namara, Regassa E., Kamara, A.

“…Treadle pump (TP) technology has been promoted by Enterprise Works in West Africa as an alternative to the traditional rope and bucket irrigation. …”
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Burkina Faso [In West African agriculture and climate change: A comprehensive analysis] por Somé, Léopold, Jalloh, Abdulai, Zougmoré, Robert B., Nelson, Gerald C., Thomas, Timothy S.

“…Burkina Faso is a landlocked country in West Africa covering about 274,000 square kilometers. …”
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Beyond the promises of technology: A review of the discourses and actors who make drip irrigation por Venot, Jean-Philippe, Zwarteveen, M.Z., Kuper, M., Boesveld, H., Kooij, S. van der, Wanvoeke, J., Benouniche, M., Errahj, M., Fraiture, Charlotte de, Verma, S.

“…Based on evidence from North and West Africa as well as South Asia, we show that there are multiple actors involved in shaping this imagery, the legitimacy of which largely stems from an engineering perspective that treats technology and potential as ‘truths’ that exist independently of the context of use. …”
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Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection por Humphreys-Pereira, D., Williamson, V., Lee, S., Coyne, Danny L., Salazar, L., Gómez Alpízar, L.

“…Analysis of DNA sequences from the ITS region indicated that populations from Costa Ricawere monophyletic withS. bradysfrom West Africa and clearly distinct from otherScutellonemaspecies. …”
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Combining ability, heterotic patterns and genetic diversity of extraearly yellow inbreds under contrasting environments por Badu-Apraku, Baffour, Oyekunle, M., Fakorede, M.A.B., Vroh Bi, Irie, Akinwale, R., Aderounmu, R.O.

“…Information on the combining ability, heterotic patterns and genetic diversity of maize (Zea mays L.) inbreds is crucial for the success of a hybrid program targeting the stress environments of West Africa (WA). Studies were conducted in 2011 at four locations in Nigeria to (i) determine the combining ability of 20 extra-early yellow inbred lines, (ii) classify the inbred lines into heterotic groups, and (iii) determine the genetic diversity among the lines. …”
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Molecular characterization of cultivated cowpea (Vigna unguiculata L. Walp) using simple sequence repeats markers por Ogunkanmi, L.A., Ogundipe, O.T., Fatokun, C.A.

“…The PIC also revealed the comparative genetic diversity from three sub-regions in Africa; West Africa, North East and Central Africa and Southern Africa with thirteen accessions each. …”
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Evaluation of strigaresistant early maize hybrids and test locations under strigainfested and strigafree environments por Akinwale, R., Badu-Apraku, Baffour, Fakorede, M.A.B.

“…Emergence of several seed companies in the West Africa sub-region during the last decade has necessitated intensified efforts towards hybrid development and extensive testing. …”
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Reduction of Striga hermonthica parasitism on maize using soybean rotation por Carsky, R.J., Berner, B.D., Oyewole, K., Dashiell, Kenton E., Schulz, S.

“…Striga hermonthica is a serious parasite of cereals in most of the semi-arid savanna zone of West Africa, causing substantial yield loss. It has been observed that some soybean cultivars are capable of stimulating germination of S. hermonthica seed, which would reduce the seed bank in the soil. …”
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Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa por Onstad, D.W., Kang, J., Ba, Malick N., Tamo, Manuele, Jackai, L.E.N., Dabiré, C., Pittendrigh, Barry Robert

“…We focused on population dynamics and genetics in a region of west Africa. We simulated single-toxin and pyramided (two-toxin) cowpea and emphasized conservative, worst-case scenarios in our analysis. …”
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Characterization of yam-growing households in the project areas of Nigeria por Mignouna, Djana B., Abdoulaye, Tahirou, Alene, A., Asiedu, Robert, Manyong, Victor M.

“…The Yam Improvement for Income and Food Security in West Africa (YIIFSWA) project was initiated to assess and understand the yam-based systems in order to identify the opportunities of interventions that could potentially help to increase productivity in the region. …”
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Morphological and molecular characterisation of Scutellonema species from yam (Dioscorea spp.) and a key to the species of the genus por Kolombia, Y.A., Karssen, G., Viaene, N., Kumar, P. Lava, Joos, L., Coyne, Danny L., Bert, W.

“…The yam nematode, Scutellonema bradys, is a major threat to yam (Dioscorea spp.) production across yam-growing regions. In West Africa, this species cohabits with many morphologically similar congeners and, consequently, its accurate diagnosis is essential for control and for monitoring its movement. …”
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Morphological variation and reproductive incompatibility of three coconutmiteassociated populations of predatory mites identified as Neoseiulus paspalivorus ( Acari: Phytoseiidae) por Sourassou, N.F., Hanna, R., Zannou, I., Moraes, G. de, Negloh, K., Sabelis, M.W.

“…However, laboratory studies recently conducted have shown large differences in feeding behaviors and biological characteristics among individuals collected from three geographic origins: Brazil (South America), Benin and Ghana (West Africa). As morphologically similar specimens do not necessarily belong to the same species, we evaluated under laboratory conditions, reproductive compatibility between the specimens from three geographic locations to ascertain their conspecificity. …”
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Planting, replanting and tree diversification in cocoa systems - learning about sustainable cocoa production: a guide for participatory farmer training por Asare, R., David, S.

“…To help farmers intensify cocoa farms through best agronomic practices, the STCP in consultation with the Cocoa Research Institutes across West Africa developed a manual to provide technical guidance for farmers to establish and maintain cocoa farms. …”
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Impacts of balanced nutrient management systems technologies in the northern Guinea savanna of Nigeria por Akinola, Adebayo A., Alene, Arega D., Adeyemo, R., Sanogo, D., Olanrewaju, A.S.

“…As part of a major effort to address soil fertility decline in West Africa, a project on balanced nutrient management systems (BNMS) has been implemented in the northern Guinea savanna (NGS) of Nigeria. …”
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True yams (Dioscorea): a biological and evolutionary link between eudicots and grasses por Mignouna, Hodeba D., Abang, Mathew M., Asiedu, Robert, Geeta, R.

“…Dioscorea(true yams) is a large genus that contains species important as food (with edible tubers) or as sources of bioactive substances used in a range of applications.Dioscoreais a major staple food in many parts of the world, especially in West Africa and the Pacific islands, and serves as a famine food in many regions. …”
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