Resultados de búsqueda - "West Africa"

Training population optimization for prediction of cassava brown streak disease resistance in west African clones por Ozimati, A., Kawuki, R.S., Esuma, W., Kayondo, I.S., Wolfe, M., Lozano, R., Rabbi, Ismail Y., Kulakow, Peter A., Jannink, Jean-Luc

“…Easy illegal movement of planting materials across African countries, and long-range movement of the virus vector (Bemisia tabaci) may facilitate spread of CBSV to West Africa. Thus, effort to pre-emptively breed for CBSD resistance in W. …”
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Crop loss, aetiology, and epidemiology of citrus black spot in Ghana por Brentu, Francis C., Oduro, Kwadwo A., Offei, Samuel K., Odamtten, George T., Vicent, Antonio, Peres, Natalia A., Timmer, Lavern W.

“…Citrus Black Spot (CBS), caused by Guignardia citricarpa, was detected for the first time in Ghana and in West Africa. The disease was first observed in the Eastern Region in 1999 with typical disease symptoms including hard spot, virulent spot and false melanose were observed on several citrus species. …”
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The global mangrove watch - a New 2010 global baseline of mangrove extent por Bunting, P., Rosenqvist, A., Lucas, R.M., Rebelo, Lisa-Maria, Thomas, N., Hardy, A., Itoh, T., Shimada, M., Finlayson, C. Max

“…Artefacts due to cloud cover and the Landsat-7 SLC-off error are also present in some areas, particularly regions of West Africa due to the lack of Landsat-5 data and persistence cloud cover. …”
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Plant genetic resources and food security in West and Central Africa: Regional Conference, 26-30 April 2004 por Vodouhe, R., Atta-Krah, Kwesi, Achigan-Dako, Enoch G., Eyog-Matig, O., Avohou, H.

“…Partner institutions including the Conference of Directors for Agronomic Research in West and Central Africa (CORAF), Bioversity International, the International Institute of Topical Agriculture (IITA), Food and Agriculture Organization (FAO), the West Africa Rice Development Association (WARDA), the International Crops Research Institute for Semi-Arid Tropics (ICRISAT), the Desert Margin Programme (DMP), the World Agroforestry Centre (ICRAF), the System-Wide Genetic Resources Programme (SGRP) and the Genetic Resources Policy Initiative (GRPI) co-funded and organized the conference assisted by the Technical Centre for Agricultural and Rural Cooperation (CTA) and Syngenta. …”
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Unlocking Barriers to Adoption and Scaling of Climate Smart Cocoa Practices in Ghana por Dalaa, Mustapha Alasan, Kofituo, Rich Kofi, Amoah, Alvin, Jassogne, Laurence T.P., Asare, Richard

“…Cocoa production in West Africa has been adversely affected by climate change at varying degrees. …”
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Biomass production and N fixation of five Mucuna pruriens varieties and their effect on maize yields in the forest zone of Cameroon por Hauser, S., Nolte, C.

“…Mucuna has been tested intensively in past years as green manure for intensive maize production in West Africa. However, information is missing about the yield effect of different existing mucuna varieties. …”
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Loss of residual cyanogens in a cassava food during storage por Onabolu, A., Oluwole, O., Bokanga, M.

“…Residual cyanogens in gari, the most popular cassava food in West Africa, is implicated in the causation of tropical ataxic neuropathy. …”
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Advancing agricultural climate action in agriculture and food systems por Wollenberg, Eva Karoline, Bernoux, Martial, Pegorsch, Laurel, Sanogo, Azara ND, Omotosho, David B, Malley, Chris, Bappa, Bala, Bikom, Cyril, Ibilade, Hakeem, Aliyu, Fatima, Osuore, Elimi E., Brida, Benjamin, Diatta, Lamine, McCarty, Jessica, Mwape, Ackim, Ellis, Wyn

“…Slides 11-18 were presented by Martial Bernoux (Food and Agriculture Organization), slides 19-27 were presented by Laurel Pegorsch (Oxfam America) and Azara Nfon Dibie Sanogo (Oxfam's Regional Platform in West Africa), slides 28-41 were presented by Dr. David Omotosho (John Davison Associates) and Chris Malley (Stockholm Environment Institute), slides 42-51 were presented by Bala Bappa (CCAC SNAP, Federal Ministry of Environment, Nigeria), slides 52-56 were presented by Cyril Bikom (Federal Ministry of Agriculture and Rural Development, Nigeria), slides 57-64 were presented by Hakeem Ibilade (Federal Ministry of Agriculture and Rural Development, Nigeria), slides 65-69 were presented by Dr. …”
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Veterinary epidemiology at ILRAD and ILRI, 1987–2018 por Perry, Brian D., Bett, Bernard K., Fèvre, Eric M., Grace, Delia, Randolph, Thomas F.

“…Topics include scientific impacts; economic impact assessment; developmental impacts; capacity development; partnerships; impacts on human resources capacity in veterinary epidemiology; impacts on national animal health departments and services; impacts on animal health constraints in developing countries; impacts on ILRI's research and strategy; the introduction of veterinary epidemiology and economics at ILRAD; field studies in Kenya; tick-borne disease dynamics in eastern and southern Africa; heartwater studies in Zimbabwe; economic impact assessments of tick-borne diseases; tick and tick-borne disease distribution modelling; modelling the infection dynamics of vector-borne diseases; economic impact of trypanosomiasis; the epidemiology of resistance to trypanocides; the development of a modelling technique for evaluating control options; sustainable trypanosomiasis control in Uganda and in the Ghibe Valley of Ethiopia; spatial modelling of tsetse distributions; preventing and containing trypanocide resistance in the cotton zone of West Africa; rabies research; the economic impacts of rinderpest control; applying economic impact assessment tools to foot and mouth disease (FMD) control, the southern Africa FMD economic impact study; economic impacts of FMD in Peru, Colombia and India; economic impacts of FMD control in endemic settings in low- and middle-income countries; the global FMD research alliance (GFRA); Rift Valley fever; economic impact assessment of control options and calculation of disability-adjusted life years (DALYs); RVF risk maps for eastern Africa; land-use change and RVF infection and disease dynamics; epidemiology of gastrointestinal parasites; priorities in animal health research for poverty reduction; the Wellcome Trust Epidemiology Initiatives; the broader economic impact contributions; the responses to highly pathogenic avian influenza; the International Symposium on Veterinary Epidemiology and Economics (ISVEE) experience, the role of epidemiology in ILRAD and ILRI and the impacts of ILRAD and ILRI's epidemiology; capacity development in veterinary epidemiology and impact assessment; impacts on national animal health departments and services; impacts on animal health constraints in developing countries and impacts on ILRI's research and strategy.…”
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Growing transformational future livestock sector professionals - Emerging impacts of the ILRI CapDev grand challenge por Ekaya, Wellington N.

“…This paper presents results from an impact tracking survey conducted in April 2021 on the inaugural CapDev Grand Challenge process involving 71 participants from 24 countries in Eastern, Southern and West Africa and South, East and Southeast Asia. Over 80% of participants strongly agreed that the CapDev Grand Challenge process broadened their thinking and; • Boosted their confidence and effectiveness in communicating science to non-technical audiences, • Strengthened their confidence and ability to engage with intention to influence decision makers, • Increased their confidence and effectiveness in engaging and working with researchers outside their own discipline, • Boosted their motivation and confidence to take up leadership roles, • Made them more knowledgeable, confident and effective in designing and discussing project impact pathways, • Increased their confidence and effectiveness in mapping out actors in a project, and explaining their roles. …”
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Training workshops on Enhancing National Climate Services (ENACTS) por Dembélé, Catherine, Zounnon, Emmanuel-Eunice, Bazie, Paulin

“…Based at the university of Columbia, IRI collaborates with AGRHYMET for the development and scaling of the ENACTS approach in West Africa. Along the same line, ICRAF, CORAF and AGHRYMET have agreed to organize ENACTS-MERGING training that aims to build the capacity of meteorological agents so that they can benefit from the latest performances of the ENACTS approach and be able to produce historical climate data graphs useful for PICSA implementation. …”
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Genome-wide association study of root mealiness and other texture-associated traits in cassava por Uchendu, K., Njoku, D., Agre, A.P., Rabbi, I.Y., Dzidzienyo, D., Tongoona, Pangirayi, Offei, S., Egesi, Chiedozie N.

“…After validation, the markers and candidate genes identified in this novel work could provide important genomic resources for use in marker-assisted selection (MAS) and genomic selection (GS) to accelerate genetic improvement of root mealiness and other culinary qualities in cassava breeding programmes in West Africa, especially in Nigeria, where the consumption of boiled and pounded cassava is low.…”
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Observed and Future Spatiotemporal Changes of Rainfall Extreme Characteristics and Their Dynamic Driver in June-August Season over Africa por Teshome, Asaminew, Jie Zhang, Demissie, Teferi Dejene, Qianrong Ma

“…The spatiotemporal variability, trend, and magnitude of JJA seasonal rainfall performance exhibits a significant decreasing tendency over Eastern Africa compared to West Africa. The observed results of consecutive dry day (CDD) reveal that increasing trend and moreover RX5day shows that promising positive trend. …”
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Genome-wide investigations reveal the population structure and selection signatures of Nigerian cattle adaptation in the sub-Saharan tropics por Mauki, D.H., Tijjani, Abdulfatai, Cheng Ma, Ng'ang'a, S.I., Mark, A.I., Sanke, O.J., Abdussamad, A.M., Olaogun, S.C., Ibrahim, J., Dawuda, P.M., Mangbon, G.F., Kazwala, R.R., Gwakisa, P.S., Ting‑Ting Yin, Yan Li, Min‑Sheng Peng, Adeola, A.C., Ya‑Ping Zhang

“…Our findings depict potential convergent adaptation between African cattle, dogs and humans with adaptive genesSPRY2andITGB1BP1possibly involved in common physiological activities.The study presents unique genetic patterns of Nigerian cattle which provide new insights on the history of cattle in West Africa based on their population structure and the possibility of parallel adaptation between African cattle, dogs and humans in Africa which require further investigations.…”
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Khaya revisited: Genetic markers and morphological analysis reveal six species in the widespread por Bouka, Gaël U.D., Doumenge, Charles, Ekué, Marius, Daïnou, Kasso, Florence, Jacques, Degen, Bernd, Loumeto, Jean Joël, McKey, Doyl, Hardy, Olivier J.

“…The six genetic clusters obtained are distributed in parapatry or allopatry from West Africa to East Africa, except for cluster K4, which is in sympatry with K3 in Central Africa. …”
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Acaricide resistance in livestock ticks infesting cattle in Africa: Current status and potential mitigation strategies por Githaka, Naftaly W., Kanduma, E.G., Wieland, Barbara, Darghouth, M.A., Bishop, Richard P.

“…There is also limited recent research from West Africa and Uganda. These studies confirm that acaricide resistance in cattle ticks is a major problem in Africa. …”
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Soil organic carbon dynamics and crop yield for different crop rotations in a degraded ferruginous tropical soil in a semi-arid region: a simulation approach por Soler, C.M.T., Bado, V.B., Traoré, K., Bostick, W.M., Jones, J.W., Hoogenboom, G.

“…The goal of the present study was to estimatethe changes in SOC for different cropping systems in West Africa using a simulation model. A croprotation experiment conducted in Farakô-Ba, Burkina Faso was used to evaluate the performance ofthe cropping system model (CSM) of the Decision Support System for Agrotechnology Transfer(DSSAT) for simulating yield of different crops. …”
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Using homosoils for quantitative extrapolation of soil mapping models por Nenkam, Andree M., Wadoux, Alexandre, Minasny, Budiman, McBratney, Alex B., Sibiry Traoré, Pierre C., Falconnier, Gatien N., Whitbread, Anthony M.

“…We collected publicly available soil data for clay, silt, sand, organic carbon (OC), pH and total nitrogen (N) within our study area in Mali, West Africa and its homosoils. We fitted a regression tree model between the soil properties and environmental covariates of the homosoils, and applied this model to our study area in Mali. …”
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Climate change adaptation options to inform planning of agriculture and food systems in The Gambia: A systematic approach for stocktaking por Segnon, Alcade C, Zougmoré, Robert B., Green, Rosemary, Ali, Zakari, Carr, Tony W, Houessionon, Prosper, M'boob, Sulayman, Scheelbeek, Pauline

“…Because of the paucity of evidence sources from The Gambia, we collated evidence from both The Gambia and the West Africa region. We found that many of the documented options, such as climate-resilient crop varieties, crop diversification, climate information use, and weather indexed-based insurance have the potential to increase agricultural productivity and income while building resilience to climate change. …”
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A comparison of global mangrove maps: Assessing spatial and bioclimatic discrepancies at poleward range limits por Ximenes, Arimatéa C., Cavanaugh, Kyle C., Arvor, Damien, Murdiyarso, Daniel, Thomas, Nathan, Arcoverde, Gustavo F.B., Conceição Bispo, Polyanna da, Stocken, Tom van der

“…Latitudinal differences between mangrove range limits in the datasets exceed 5°, 7° and 10° in western North America, western Australia and northern West Africa, respectively. In some range limit areas, such as Japan, discrepancies in the position of mangrove range limits in different datasets correspond to differences exceeding 600 mm in annual precipitation and > 10 °C in the minimum temperature of the coldest month. …”
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