Resultados de búsqueda - "West Africa"

A physiologically based tritrophic metapopulation model of the African cassava food web por Gutiérrez, A.P., Yaninek, John S., Neuenschwander, Peter, Ellis, C.K.

“…Factors affecting the establishment of natural enemies: biological control of the cassava mealybug in West Africa by introduced parasitoids. J. Appl. Ecol. 30, 706-721). …”
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Some factors affecting soybean viability and emergence in the lowland tropics por Nangju, D., Wien, H.C., Singh, T.P.

“…Seed viability and emergence is one of the most important problems affecting soybean production in West Africa. Results from the multi-location yield trials indicated that introduced cultivars such as Bossier, Jupiter and Improved Pelican showed excellent adaptation and high yields provided seedling emergence was high and plant population was optimum. …”
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First report and pathogenicity of Myrothecium roridum, Curvularia eragrostidis and C.lunata on seeds of Striga hermonthica in Nigeria por Czerwenka-Wenkstetten, I.M., Berner, D.K., Schilder, A., Gretzmacher, R.

“…Yield reductions in maize of up to 90% have been observed in West Africa. In September 1994, a seed lot of Striga hermonthica (harvested in 1993 in sorghum fields in Abuja, Nigeria) was observed to have a very low germination rate (20 to 40%). …”
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Exchanging natural enemies species of lepidopterous cereal stemborers between African regions por Schulthess, F., Bosque Pérez, N.A., Chabi-Olaye, A., Gounou, S., Ndemah, R., Goergen, Georg E.

“…Based on comparison of known natural enemy complexes in East and West Africa, the scelionid egg parasitoid Teleriorrius isis and an East African strain of the braconid larval parasitoid Cotesia sesainine (Cameron) are proposed for redistribution against B. fuscn and S. calaniis fis, respectively. …”
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Recent advances in the development of sources of resistance to pink stalk borer and African sugarcane borer por Bosque Pérez, N.A., Kling, J.G., Odubiyi, S.I.

“…The lepidopterous stem borers Sesamia calamistis Hampson (Noctuidae) and Eldana saccharina (Walker) (Pyralidae) are among the most important insect pests of maize in West Africa. Efforts to breed for resistance to these two borer species are an integral part of a project to develop control practices for maize pests at IITA. …”
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A comparative analysis of governance and leadership in agricultural development policy networks por Rudnick, Jessica, Niles, Meredith, Lubell, Mark, Cramer, Laura K.

“…We contribute to filling this gap by characterizing the governance and leadership patterns within agricultural development policy networks that connect organizations working on climate resilience and food security activities in 14 smallholder farming communities across 11 countries in East Africa, West Africa and South Asia. We integrate theories of network governance and leadership in international development settings with social network analysis methods to analyze network structures and understand the roles of various actors working collaboratively toward agricultural development goals. …”
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GeoFarmer: A monitoring and feedback system for agricultural development projects por Eitzinger, Anton, Cock, James H., Atzmanstorfer, Karl, Binder, Claudia R., Läderach, Peter R.D., Bonilla Findji, Osana, Bartling, Mona, Mwongera, Caroline, Zurita, Leo, Jarvis, Andy

“…We tested GeoFarmer in four geographic domains associated with ongoing agricultural development projects in East and West Africa and Latin America. We demonstrate that GeoFarmer is a cost-effective means of providing and sharing opportune indicators of on-farm performance. …”
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Technical Advisory Committee Third Meeting, 10-13 April 1972: Report por CGIAR Technical Advisory Committee

“…Sauger proposed creation of a network of ICRISAT relay stations in West Africa, and TAC decided to send a consultant mission chaired by Hugh Doggett to study the matter. …”
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Scaling up climate information services through public-private partnership business models por Partey, Samuel T., Nikoi, Gordon K., Ouédraogo, Mathieu, Zougmoré, Robert B.

“…Between 2011 and 2017, CCAFS West Africa piloted how the dissemination of climate information services (CIS) to farmers in its climate-smart village sites (Lawra and Jirapa) in Ghana could help them avert risks associated with climate change and variability. …”
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The risk posed by Xanthomonas wilt disease of banana: Mapping of disease hotspots, fronts and vulnerable landscapes por Ocimati, W., Bouwmeester, H.J., Groot, Jeroen C.J., Tittonell, Pablo A., Brown, D., Blomme, Guy

“…XW is currently spreading westwards from hot spots in eastern DR Congo highlands, putting the plantain (Musa AAB genome) belt of central and west Africa at risk. In-depth understanding of the key variables responsible for disease spread, current hotspots, and vulnerable landscapes is crucial for disease early warning and management. …”
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The performance of a wide range of plantain cultivars at three contrasting altitude sites in North Kivu, Eastern Democratic Republic of Congo por Blomme, Guy, Sivirihauma, Charles, Vutseme, Lusenge, Turner, David W., Ocimati, Walter

“…Studies to evaluate, at mid- to high elevation, a larger portion of the plantain diversity of the whole of DR Congo and even West Africa are warranted.…”
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The influence of minisett size and time of planting on the yield of seed yam (Dioscorea Rotundata) por Aighewi, B., Maroya, N., Mignouna, Djana B., Aihebhoria, D., Balogun, M., Asiedu, R.

“…In traditional yam (Dioscorea spp.) production systems in West Africa, finding sole seed yam producers is rare and up to 30% of harvested tubers from the ware tuber crop is reserved to plant an equivalent area of the harvested crop during the next season. …”
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Multi-stakeholder process strengthens agricultural innovations and sustainable livelihoods of farmers in southern Nigeria por Bisseleua, D.H.B., Idrissou, L., Olurotimi, P., Ogunniyi, A., Mignouna, Djana B., Bamire, S.A.

“…Purpose: In this paper, we explore the strategic role of Multi-stakeholder processes (MSP) in agricultural innovations and how it has impacted livelihood assets’ (LAs) capital dynamics of stakeholders in platforms in West Africa. Design/Methodology/Approach: We demonstrate how LA capitals and socio-economic dynamics induced by MSP can enhance cassava production efficiency but also create opportunities and challenges that influence platform dynamics and impacts. …”
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Accelerating Seed Germination and Juvenile Growth of Sorghum (Sorghum bicolor L. Moench) to Manage Climate Variability through Hydro-Priming por Dembélé, Siaka, Zougmoré, Robert B., Coulibaly, Adama, Lamers, John P.A., Tetteh, Jonathan P.

“…Agriculture in Mali, a country in Sahelian West Africa, strongly depends on rainfall and concurrently has a low adaptive capacity, making it consequently one of the most vulnerable regions to climate change worldwide. …”
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Salinity increases CO2 assimilation but reduces growth in field-grown, irrigated rice por Asch, F., Dingkuhn, M., Dorffling, K.

“…Plants were grown in Ndiaye, Senegal, at a research station of the West Africa Rice Development Association (WARDA), during the hot dry season (HDS) and the wet season (WS) 1994 under irrigation with fresh or saline water (flood water electrical conductivity = 3.5 mS cm-1). …”
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Community Characteristics of Sympatric Freshwater Turtles from Savannah Waterbodies in Ghana por Gbewaa, S.B., Oppong, S.K., Horne, B.D., Tehoda, P., Petrozzi, F., Dendi, D., Akani, G.C., Vittorio, M. di, Ajong, S.N., Pacini, N., Fa, J.E., Luiselli, L.

“…In this study, we describe habitat associations, community diversity, and temporal patterns of occurrence of freshwater turtle species in the Dahomey Gap ecoregion of Ghana (West Africa). We gathered data from 13 sites in central Ghana and along the Sene Arm of Lake Volta in the Digya National Park (Bono East Region). …”
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Consumer preferences and socioeconomic factors decided on plantain and plantain-based products in the central region of Cameroon and Oyo state, Nigeria por Udomkun, Patchimaporn, Masso, C., Swennen, Rony L., Innawong, B., Fotso Kuate, A., Alakonya, A., Lienou, J., Ibitoye, D.O., Vanlauwe, Bernard

“…Plantain is a key staple food in Central and West Africa, but there is limited understanding of its market in Africa. …”
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Factors affecting variation in farm yields of irrigated lowland rice in southern-central Benin por Tanaka, A., Saito, Kazuki, Azoma, K., Kobayashi, K.

“…For increasing rice production in West Africa, both expansion of rice harvested area and raising rice yield are required. …”
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The future of food safety in Africa: Research perspective por Grace, Delia, Alonso, Silvia, Amenu, K., Cook, Elizabeth A.J., Dione, Michel M., Knight-Jones, Theodore J.D., Lindahl, Johanna F., Mutua, Florence K., Hung Nguyen-Viet, Roesel, Kristina, Thomas, Lian F.

“…Interventions to improve food safety at scale in east and west Africa. Here we mention research on upgrading value chains and our flagship “three-legged stool approach” to improving food safety in informal markets by empowering consumers to demand safe food, vendors to provide it, and policymakers to support it.…”
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Diversity of white Guinea yam (Dioscorea rotundata Poir.) cultivars from Benin as revealed by agro-morphological traits and SNP markers por Agre, A.P., Dassou, A.G., Loko, Y., Idossou, R., Dadonougbo, E., Gbaguidi, A.A., Mondo, J., Muyideen, Y., Adebola, P.O., Asiedu, R., Dansi, A., Asfaw, A.

“…White Guinea yam (Dioscorea rotundata Poir.) is indigenous to West Africa, a region that harbours the crop's tremendous landrace diversity. …”
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