Resultados de búsqueda - "West Africa"

Biological controls for aflatoxin reduction por Bandyopadhyay, Ranajit, Cotty, Peter J.

“…Currently there are atoxigenic strain biocontrol products under farmer’s field evaluations in several African countries extending from West Africa to East and Southern Africa. These products need to be moved into wide use to reduce aflatoxin exposure to the human populations across Africa.…”
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A Virus-derived stacked RNAi construct confers robust resistance to cassava brown streak disease por Beyene, Getu, Chauhan, Raj Deepika, Ilyas, Muhammad, Wagaba, Henry, Fauquet, Claude M., Miano, Douglas, Alicai, Titus, Taylor, Nigel J.

“…Cassava brown streak disease (CBSD) threatens food and economic security for smallholder farmers throughout East and Central Africa, and poses a threat to cassava production in West Africa. CBSD is caused by two whitefly-transmitted virus species: Cassava brown streak virus (CBSV) and Ugandan cassava brown streak virus (UCBSV) (Genus: Ipomovirus, Family Potyviridae). …”
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Relative efficiency of positive selection and tissue culture for generating pathogen-free planting materials of yam (Dioscorea spp.) por Balogun, M., Maroya, N., Augusto, J., Ajayi, A., Kumar, P. Lava, Aighewi, B.A., Asiedu, Robert

“…Yams are staples in West Africa. They are propagated from tubers in an informal seed system. …”
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Characteristics of maize cultivars in Africa: how modern are they and how many do smallholder farmers grow? por Abate, T., Fisher, M., Abdoulaye, Tahirou, Kassie, Girma T., Lunduka, R., Asnake, W., Marenya, Paswel Phiri

“…Eastern Africa (EA) and southern Africa (SA) accounted for about 43 and 38%, respectively, of all the cultivars reported, whereas West Africa’s (WA) share was 19%. The average area planted to modern cultivars in the surveyed areas was estimated at 57%—with EA, SA, and WA estimates of 82, 55, and 36%, respectively; however, increased adoption was not necessarily always related to improved productivity, as the latter depends on many additional factors. …”
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Uses and vulnerability of ligneous species exploited by local population of northern Burkina Faso in their adaptation strategies to changing environments por Ouédraogo, Pauline, Bationo, B. André, Sanou, Josias, Traoré, Salifou, Barry, Silamana, Dayamba, Sidzabda Djibril, Bayala, Jules, Ouédraogo, Mathieu, Soeters, Sebastiaan, Thiombiano, Adjima

“…Arid and semi-arid areas of West Africa are highly subject to climate change effects. …”
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IPM-omics: from genomics to extension for integrated pest management of cowpea por Agunbiade, T.A., Steele, L., Coates, B., Gassmann, A., Margam, V., Ba, Malick N., Dabiré-Binso, C., Baoua, I., Bello-Bravo, Julia, Seufferheld, F., Sun, W., Tamò, Manuele, Pittendrigh, Barry Robert

“…Many of these tools are currently being developed to help farmers manage insect pests of cowpea in West Africa.…”
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Regulation status of quarantine pests of rice seeds in the Economic Community of West African States (ECOWAS) por Bachabi, F., Gumedzoe, M.Y.D., Maroya, N.G., Ayenan, M.A.T., Saidou, A., Sere, Y.

“…The various regulations related to seed production, certification and marketing, and quarantine regulations in West Africa were analyzed and their enforcement and performance were assessed through comparison to international standards, especially the International Plant Protection Convention (IPPC). …”
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DNA barcodes for pathogens of African food crops por Kumar, L., Sharma, K.

“…The fungal pathogen causing anthracnose (Glomerella cingulata), the most destructive disease of yam and cassava in West Africa, were characterized. Various isolates of this fungus were identified and their genetic relatedness and diversity were determined through molecular analysis. …”
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Response of exotic sorghum (Sorghum bicolor [L.] Moench) cultivars to planting date under natural infestation of Striga hermonthica (Del) Benth. in the Sudan savanna zone of northe... por Kamara, A.Y., Ekeleme, F., Omoigui, L.O., Menkir, A., Chikoye, David, Dugje, I.Y.

“…Moench) is one of the most important cereal crops grown in the dry savannas and semi-arid regions of West Africa under rain-fed conditions. Although total sorghum production in Nigeria has increased over the years, the average grain yield on farmers' fields has remained low. …”
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Flowering intensity in white yam (Dioscorea rotundata) por Hamadina, E.I., Craufurd, Peter Q., Asiedu, Robert

“…White or Guinea yam (Dioscorea rotundata), grown for its underground tubers, is an important food in West Africa. Progress in yam breeding is constrained by variable flowering behaviour, making hybridization difficult. …”
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Potential of drought-tolerant maize varieties in nitrogen-deficient soils of the Guinea savannas por Kamara, A.Y., Menkir, A., Omoigui, L.O., Kureh, I.

“…Low soil fertility and intermittent drought are among major constraints limiting the production of maize in the Guinea savannas of West Africa. Low soil fertility is due to soil degradation and nutrient depletion arising from intensification of land use. …”
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Options for cogongrass ((Imperata cylindrica) control in white guinea yam (Dioscorea rotundata) and cassava (Manihot esculenta)1 por Chikoye, David, Ellis-Jones, J., Kormawa, P.M., Udensi, U.E., Ibana, S., Avav, T.

“…Cogongrass is a serious weed in small-scale farms in the lowland humid zone of West Africa. This study evaluated the response of cogongrass to herbicides and the legume cover crop velvetbean in cassava and white Guinea yam. …”
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A new Bactrocera species in Benin among mango fruit fly (Diptera: Tephritidae) species por Vayssières, Jean-François, Goergen, Georg E., Lokossou, O., Dossa, P., Akponon, C.

“…Ecological and behavioral studies will be necessary in order to plan and to apply optimal methods for controlling this new pest of major economic importance in West Africa.…”
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Guide methodologique: Méthode communautaire participative d’inventaire et de priorisation des technologies / pratiques d’agriculture élevage-agroforesterie climato-intelligentes por Bayala, Jules, Ayantunde, Augustine A., Somda, Jacques, Ky-Dembélé, Catherine, Bationo, B. André, Sanogo, Diaminatou, Tougiani, Abasse, Zougmoré, Robert B.

“…Le guide a étéproduit dans le cadre d’un projet “Building resilient agro-sylvopastoral systems in West Africa through participatory action research” (BRASPAR)” qui est l’un des projets de la Composante 2 financée par le programme de recherche du CGIAR sur les Changements Climatiques, l’Agriculture etla Seć urité Alimentaire (CCAFS). …”
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A coupled modeling framework for sustainable watershed management in transboundary river basins por Khan, Hassaan Furqan, Yang, Y. C. Ethan, Xie, Hua, Ringler, Claudia

“…The generalized ABM framework is also tested in two key transboundary river basins, the Mekong River basin in Southeast Asia and the Niger River basin in West Africa, where water uses for ecosystem health compete with growing human demands on food and energy resources. …”
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Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils por Nwoke, O.C., Vanlauwe, Bernard, Diels, J., Sanginga, N., Osonubi, O., Merckx, Roel

“…The labile and moderately labile phosphorus fractions and adsorption characteristics of surface and subsurface horizons of eleven soil profiles in the derived savanna (DS) and the northern Guinea savanna (NGS) of West Africa were assessed. The labile P fractions are the resin and HCO3-extractable inorganic (Pi) and organic (Po) P. …”
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Gains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditions por Badu-Apraku, Baffour, Talabi, A.O., Ifie, B.E., Chabi, Y., Obeng-Antwi, K., Haruna, A., Asiedu, Robert

“…The objectives of this study were to examine yield gains in the cultivars and to investigate inter-trait relationships and yield stability under six drought and 17 rainfed conditions in West Africa from 2013 to 2016. Annual rate of yield increase across cultivars was 0.034 (3.28%) and 0.068 Mg ha−1 (2.25%), whereas yield gains per period were 0.17 and 0.38 Mg ha−1 under drought and rainfed environments, respectively. …”
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Nitrogen contribution of five leguminous trees and shrubs to alley cropped maize por Okogun, J., Sanginga, P., Mulongoy, N.

“…This indicates that A. lebbeck is a good potential candidate for alley cropping system in West Africa. S. corymbosa performed poorly compared with the other legume trees. …”
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Options for soil organic carbon maintenance under intensive cropping in the West African savanna por Diels, J., Lyasse, O., Sanginga, N., Vanlauwe, Bernard, Aihou, K., Iwuafor, E.N.O., Merckx, Roel, Deckers, J.

“…These calculations were found to be in line with available data from long-term experiments in West Africa. While the relation between residue-input rates and soil organic carbon (SOC) buildup is reasonably well known, little is known about how this translates directly into yield benefits. …”
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Morphological, phylogenetic, and genomic evidence reveals the causal agent of thread blight disease of cacao in Peru is a new species of Marasmius in the section Neosessiles, Maras... por Huamán Pilco, Ángel Fernando, Ramos Carrasco, Tito Ademir, Ernesto Franco, Mario Emilio, Tineo Flores, Daniel, Estrada Cañari, Richard, Romero, Pedro Eduardo, Aguilar Rafael, Vilma, Ramírez Orrego, Lourdes Adriana, Tincopa Marca, Rosalina, Márquez, Fanny Rosario, Oliva Cruz, Manuel, Díaz Valderrama, Jorge Ronny

“…This same species is known to be the main causal agent of TBD in West Africa. However, some morphological characteristics, such as the presence of rhizomorphs, the almost exclusively white color, and pileus sizes less than 5 mm, among others, differ to the description of M. tenuissimus. …”
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