Resultados de búsqueda - "Nigeria"

Leaves metabolomic profiling of Musa acuminata accessions using UPLC–QTOF–MS/MS and their antioxidant activity por Sonibare, M.A., Ayoola, I.O., Gueye, B., Abberton, Michael T., D'Souza, R., Kuhnert, N.

“…Accession TMp 24 from Nigeria gave the highest yield in both methods of extraction. …”
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El cultivo del sorgo en los valles regados templados fríos de la Norpatagonia por Gallego, Juan Jose, Miñon, Daniel Pedro, Barbarossa, Raul Antonio, Neira Zilli, Fernanda, Zubillaga, María Fany, Colabelli, Mabel Noemí

“…Los principales productores mundiales de sorgo, si se considera el promedio de las cosechas 2016/17, 2017/18 y 2018/19, son Estados Unidos, con una producción de 10,2 millones de toneladas (Mt) de grano, Nigeria (6,7 Mt), India, México, Etiopía y Sudan que producen alrededor de 4,5 Mt cada uno, China con 3,3 Mt y Argentina con 3 Mt (FIRA, 2019). …”
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Producción y consumo

“…El aumento en producción se atribuye a un incremento de Ja cosecha del Occidente Africano, particularmente Ghana y Nigeria. El total de producción para África se calcula en 942.000 toneladas que si se cumple, será la cosecha más grande de este continente en Jos últimos cuatro años. …”
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Turrialba; Vol. 33, no. 3

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Integrated management of cowpea insect pests using elite cultivars, date of planting and minimum insecticide application por Asante, S., Tamo, Manuele, Jackai, L.E.N.

“…Trials were conducted in Kano, northern Nigeria, during 1996 and 1997 cropping seasons to determine the influence of date of planting and two well-timed insecticides sprays on the incidence of major insect pests namely, the legume pod-borer, Maruca vitrata Fab., legume flower thrips, Megalurothrips sjostedti Trybom, complex of pod-sucking bugs and cowpea aphid, Aphis craccivora Koch and their effect on grain yield of elite cowpea (Vigna unguiculata L. …”
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Genetic studies of extra-early provitamin-A maize inbred lines and their hybrids in multiple environments por Badu-Apraku, Baffour, Fakorede, M.A.B., Talabi, A.O., Oyekunle, M., Aderounmu, M., Lum, A.F., Ribeiro, P.F., Adu, G.B., Toyinbo, J.O.

“…The 190 F1 hybrids plus six checks were tested under Striga infestation, drought, and stress-free environments in Nigeria from 2015 to 2017. In trial 2, 35 extra-early yellow hybrids were evaluated under low-N, Striga-infested and stress-free environments in 2018. …”
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Participatory cowpea development for poverty reduction and sustainable livelihoods in west Africa: case of PRONAF (Projet Niebe pour l'Afrique)- a multipartners, regional, and coll... por Adeoti, R., Coulibaly, O., Allomasso, R., Adetonah, S., Gbaguidi, B., Fatokun, C.

“…Target countries include Benin, Burkina Faso, Cameroon, Ghana, Mali, Niger, and Nigeria. In addition to innovations, capacity building through FFF (Farmer field fora), short courses for training project staff, degree-related training, and exchange of knowledge and information on cowpea value chains have made an important contribution. …”
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Can a combination of UAV-derived vegetation indices with biophysical variables improve yield variability assessment in smallholder farms? por Adewopo, Julius, Peter, H., Mohammed, I., Craufurd, Peter Q., Vanlauwe, Bernard

“…High-resolution imageries were acquired with UAV-borne multispectral sensor at four and eight weeks after sowing (WAS) on 31 farmer managed fields (FMFs) and 12 nearby nutrient omission trials (NOTs) sown with two genotypes (hybrid and open-pollinated maize) across five locations within the core maize region of Nigeria. Acquired multispectral imageries were post-processed into three VIs, normalized difference VI (NDVI), normalized difference red-edge (NDRE), and green-normalized difference VI (GNDVI) while plant height (Ht) and percent canopy cover (CC) were measured within georeferenced plot locations. …”
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A CRISPR/Cas9-based genome-editing system for yam (Dioscorea spp.) por Syombua, E.D., Zhang, Z., Tripathi, J.N., Ntui, V.O., Kang, M., George, O.O., Edward, N.K., Wang, B., Yang, B., Tripathi, L.

“…The 'yam belt' in West Africa, including Nigeria, Benin, Togo, Ghana, and Côte d'Ivoire, accounts for 92% of 72.6 million tons of global yam production (FAOSTAT, 2018). …”
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Enhancing drought tolerance and Striga hermonthica resistance in maize using newly derived inbred lines from the wild maize relative, Zea diploperennis por Shaibu, A.S., Badu-Apraku, Baffour, Ayo-Vaughan, M.A.

“…Sixty-six diallel crosses involving the inbreds plus four checks were evaluated for two years under drought, Striga-infested and rainfed environments in Nigeria. Significant differences (p < 0.05) were observed for the effects of genotype, environment, genotype × environment, GCA and specific combining ability (SCA) on grain yield and other measured traits. …”
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Limited Si-nutrient status of rice plants in relation to plant-available Si of soils, nitrogen fertilizer application, and rice-growing environments across Sub-Saharan Africa por Tsujimoto, Y., Muranaka, S., Saito, Kazuki, Asai, H.

“…Plant and soil samples were collected at harvesting time from 99 fields in Benin, Ghana, Guinea, Kenya, Madagascar, Mozambique, and Nigeria, and then chemically analyzed. The Si concentration in straw ranged 1.7–8.4%, and the values in 68% of the fields were below the critical deficiency level of 5%. …”
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Cassava Brown Streak Disease response and association with agronomic traits in elite Nigerian cassava cultivars por Ano, C.U., Ochwo-Ssemakula, Mildred, Ibanda, A., Ozimati, A., Gibson, P., Onyeka, J., Njoku, D., Egesi, Chiedozie N., Kawuki, R.S.

“…The aim of this study was to evaluate Nigerian cassava genotypes in order to determine their responses to CBSD, in the event that it invades Nigeria, the world’s largest cassava producer. The study gathered information on whether useful CBSD resistance alleles are present in the elite Nigerian cassava accessions. …”
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Modeling planting-date effects on intermediate-maturing maize in contrasting environments in the Nigerian savanna: an application of DSSAT model por Tofa, A, Chiezey, U.F., Babaji, B.A., Kamara, A., Adnan, A.A., Beah, A., Adam, A.M.

“…This demonstrated the potential of the CERES-Maize model to simulate growth and yield of maize in the Nigeria savannas. Results of 30-year sensitivity analysis with 9 different sowing windows showed that in SS, sowing the intermediate maize varieties from early to mid-June produced the highest grain yields. …”
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Biomass production and nutrient use efficiency in white Guinea yam (Dioscorea rotundata Poir.) genotypes grown under contrasting soil mineral nutrient availability por Matsumoto, R., Asfaw, A., Ishikawa, H., Takada, K., Shiwachi, H., Asiedu, R.

“…Six white Guinea yam genotypes were used in field experiments conducted at Ibadan, Nigeria. Experiments were conducted with low soil NPK conditions with zero fertilizer input and high soil NPK conditions with mineral fertilizer input. …”
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Predicting intercrop competition, facilitation, and productivity from simple functional traits por MacLaren, C., Waswa, W., Aliyu, K.T., Claessens, Lieven, Mead, A., Schöb, C., Vanlauwe, Bernard, Storkey, J.

“…In the second year, we grew crops in monocrop, intercrop, and single plant treatments at two sites in Kenya and one site in Nigeria. Together, these treatments allowed us to identify whether each intercrop combination overyielded or underyielded, and whether any overyielding was driven by facilitation and/or differences in inter- vs intraspecific competition. …”
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Accounting for dietary deprivations in rural Africa: Poor households, poor farms or poor food environments? por Block, Steven, Ecker, Olivier, Headey, Derek D., Comstock, Andrew R.

“…Using national datasets for rural Nigeria, Ethiopia and Tanzania, we conduct a “racehorse” regression analysis that reveals strong support for the role of wealth in reducing dietary deprivation, evidence that livestock diversification is important but not crop diversification, and indications that local farming systems are also strongly associated with dietary outcomes, but market access indicators are not. …”
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Adoption and impacts of agricultural technologies and sustainable natural resource management practices in fragile and conflict affected settings: A review and meta-analysis por Nshakira-Rukundo, Emmanuel, Tabe-Ojong, Martin Paul Jr., Gebrekidan, Bisrat Haile, Agaba, Monica, Surendran-Padmaja, Subash, Dhebibi, Boubaker

“…We find that studies on adoption and impact of agricultural technologies and natural resource management practices are highly clustered around Ethiopia and Nigeria. We do not find any studies on Small Island States. …”
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An Assessment of the Impact of ISNAR: 1997-2001 por Anderson, Jock R., Ponniah Anandajayasekeram, Eric Craswell, Mandivamba Rukuni

“…The latter has informed debate both at national and subregional levels (e.g. on the declining support for agricultural research, setting research priorities, etc.), while the former has assisted the development of biotechnology and biosafety policies in a number of countries, including Argentina, Cameroon, Chile, China, Egypt, Indonesia, Kenya, Malaysia, Mexico, Namibia, Nigeria, Philippines, Turkey, Uganda, and Zimbabwe.…”
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Trends and variability of rainfall seasonality indices in the Lao People’s Democratic Republic (PDR) por Atiah, Winifred A., Muthoni, Francis K.

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Strengthening agricultural extension training: Process skills and competency gaps in undergraduate agricultural extension curriculum in South Africa por von Maltitz, Lindie, Davis, Kristin E., Suvedi, Murari, Chanza, Charity, Agwu, Ekwe Agwu, Sasidhar, P. V. K., Ukamaka, Mabel Dimelu, Liverpool-Tasie, Lenis Saweda, Anugwa, Ifeoma Quinette, Tchuwa, Frank

“…The research aims to identify skills and competency gaps in undergraduate agricultural extension curricula in the participating countries – Kenya, Malawi, Nigeria, South Africa and Uganda - and use the results to contribute to formulating appropriate curricula. …”
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