Resultados de búsqueda - "altitud"

Landscape genomics reveals regions associated with adaptive phenotypic and genetic variation in Ethiopian indigenous chickens por Getachew, Fasil, Derks, M.F.L., Dessie, Tadelle, Hanotte, Olivier H., Barros, C.P., Crooijmans, R.P.M.A., Komen, H., Bastiaansen, J.W.M.

“…Genes in the calcium signalling pathway, those associated with the hypoxia-inducible factor (HIF) transcription factors, and sports performance (GALNTL6) are under selection in high-altitude populations. Our study underscores the relevance of landscape genomics as a powerful interdisciplinary approach to dissect adaptive phenotypic and genetic variation in random mating indigenous livestock populations.…”
Enlace del recurso

Crop calendar optimization for climate change adaptation in yam farming in South- Kivu, eastern D.R. Congo por Mondo, J., Chuma, G.B., Matiti, H.M., Kihye, J.B., Bagula, E., Karume, K., Kahindo, C., Egeru, A., Majaliwa, J.M., Agre, A.P., Adebola, P.O., Asfaw, A.

“…Results showed the existence of four AEZs in the South-Kivu province, with contrasting altitudes, temperatures, and rainfall patterns. Climate change is real in all these South-Kivu’s AEZs, resulting either in rainfall deficits in some areas, or extreme rainfall events in others, with significant temperature increases across all AEZs. …”
Enlace del recurso

Experimental confirmation of the leafhopper Cicadella cosmopolita as a potential vector of Xanthomonas vasicola pv. musacearum of enset in Ethiopia por Shara, Sabura, Garo, Gezahegn, Khamis, Fathiya M., Kearsley, Elizabeth, Ocimati, Walter, Tefera, Tadele, Blomme, Guy

“…Field surveys along two altitude bands ranging 1000‒3000 m above sea level (masl) revealed an increased leafhopper abundance at 1500‒2500 masl during the wet season, coinciding with higher EXW prevalence. …”
Enlace del recurso

Unlocking Finance through Livestock: Ethiopia's Innovative Lending Model por Endrias, Abrhame, Demissie, Teferi

“…Recurrent droughts, rising temperatures, and increasing feed and water scarcity have intensified pressure on livestock systems, especially in highland and mid-altitude dairy-producing areas. Climate-related stresses reduce milk productivity, increase disease prevalence, and raise production costs, making dairy farming a higher-risk activity in the absence of adaptive advisory services and risk-informed financing. …”
Enlace del recurso

The feed values of indigenous multipurpose trees for sheep in Ethiopia: The case of Vernonia amygdalina, Buddleja polystachya and Maesa lanceolata por Haile, Aynalem, Tolemariam, T.

“…The feed resources base, the feeding systems and feed values of three indigenous trees Girawa, Anfare and Kelewa (Local (Amharic), Ethiopian names ) were studied for sheep in sub humid, mid altitude area of south western Ethiopia. The study involved a survey of the feed resources base and assessment of the feeding systems, chemical analysis and in vitro dry matter digestibility. …”
Enlace del recurso

Livestock feed resources, production and management in the agro-pastoral system of the Hindu Kush-Karakoram-Himalayan region of Pakistan; the effect of accessibility por Rahman, A., Duncan, Alan J., Miller, D., Clemens, J., Frutos, P., Gordon, I.J., Atiq-ur Rehman, Baig, A., Ali, F., Wright, Iain A.

“…Householders in the lower altitude zones and those close to transport infrastructure appear to rely less heavily on livestock for income but have fodder resources which are more appropriate for their complement of livestock.…”
Enlace del recurso

Common beans, biodiversity, and multiple stresses: challenges of drought resistance in tropical soils por Beebe, Stephen E., Rao, Idupulapati M., Jyostna Devi, Mura, Polanía Perdomo, José A.

“…Bean originated in the mid-altitude neo-tropics, and by its nature is not well adapted to warm, dry climates. …”
Enlace del recurso

Effect of temperature on the life history parameters of noctuid lepidopteran stem borers, Busseola fusca and Sesamia calamistis por Khadioli, N., Tonnang, Henri E.Z., Ong'amo, G., Achia, Thomas, Kipchirchir, I., Kroschel, Jürgen, Le Ru, B.

“…The lower lower thermal threshold found for B. fusca than for S. calamistis and the higher upper thermal threshold found for S. calamistis than for B. fusca explain in part the observed distribution of both species in sub‐Saharan Africa with S. calamistis occurring in all the agro‐ecological zones but being usually more common than B. fusca in savannah lowland and B. fusca reported mainly from mid and high altitude areas.…”
Enlace del recurso

Determinants of adoption of improved haricot bean production package in Alaba special Woreda, Southern Ethiopia por Negash, R.

“…Haricot bean is considered as the main cash crop and protein source of the farmers in many low lands and mid altitude zones of Ethiopia. The country’s export earning from haricot bean exceeds that of other pulses such as lentils, horse bean and chickpea. …”
Enlace del recurso

Predictive factors and risk mapping for Rift Valley fever epidemics in Kenya por Munyua, P.M., Murithi, R.M., Ithondeka, P.M., Hightower, A., Thumbi, Samuel M., Anyangu, S.A., Kiplimo, Jusper Ronoh, Bett, Bernard K., Vrieling, A., Breiman, R.F., Njenga, M.K.

“…The risk of RVF was positively associated with Normalized Difference Vegetation Index (NDVI), low altitude below 1000m and high precipitation in areas with solonertz, luvisols and vertisols soil types (p <0.05). …”
Enlace del recurso

Successful innovations and lessons learnt in cassava improvement and deployment by IITA in Eastern African Region por Ntawuruhunga, Pheneas, Dixon, A., Kanju, E., Ssemakula, G.N., Okechukwu, R.U., Whyte, J., Obiero, H., Bigirimana, S., Gashaka, G., Lukombo, S., Mkamilo, G.S., Ndyetabula, I., Tata-Hangy, W.K., Otim Okello, F., Schofield, J.

“…However, the spread of cassava brown streak disease (CBSD) in mid altitude threatened the achievements already made as the new disease attacked most of the ACMD-resistant and high yielding varieties. …”
Enlace del recurso

Participatory evaluation of cattle fattening innovations of smallholder farmers in Gamogofa zone of southern Ethiopia por Mekasha, Yoseph, Tegegne, Azage, Dubale, T.

“…The area is semi-arid lowland with altitudes ranging from 746 to 1450 m asl and mean temperature ranges from 22 to 25 °C. …”
Enlace del recurso

Distribution and prevalence of nematodes (Scutellonema bradys and Meloidogyne spp.) on marketed yam (Dioscorea spp.) in West Africa por Coyne, Danny L., Tchabi, A., Baimey, H., Labuschagne, N., Rotifa, I.

“…When analysed by agroecological zone, the greatest (P ≤ 0.05) mean S. bradys density was observed in the mid altitude savannah (890 g−1), followed by the southern guinea savannah (488 g−1). …”
Enlace del recurso

Diversity, pathogenicity, and current occurrence of bacterial wilt Bacterium Ralstonia solanacearum in Peru por Gutarra, L., Herrera, J., Fernández, E., Kreuze, Jan F., Lindqvist-Kreuze, H.

“…In total 39 farmers’ fields located in the central and northern Peru between the altitudes 2111 and 3742 m above sea level were sampled. …”
Enlace del recurso

Abundance of pests and diseases in Arabica coffee production systems in Uganda - ecological mechanisms and spatial analysis in the face of climate change. por Liebig, Theresa Ines

“…The development of white coffee stem borer was controlled by the bimodal rainfall, and by altitude and shade through their effect on minimum temperature. …”
Enlace del recurso

Collaborative Study of Cassava in Africa (COSCA); project description: COSCA working paper, No. 1 por Nweke, F.I.

“…The major consideration in the choice of these countries is that they provide a wide range of conditions of climate, altitude, population density, and market access infrastructure in the important cassava zones of the continent in order to collect relevant information over a wide range of ecologies in the cassava belt of Africa. …”
Enlace del recurso

The nutritional contribution of potato varietal diversity in andean food systems: a case study por De Haan, Stef, Burgos, Gabriela, Liria, Reyna, Rodríguez, Flor, Creed Kanashiro, Hilary M., Bonierbale, Merideth

Enlace del recurso
Enlace del recurso

Pedoenvironments driving the monodominance of Peltogyne gracilipes (Leguminosae) in the Northern Amazon, Brazil por Angulo Villacorta, Carlos Darwin, Da Silva Carvalho, Lidiany Camila, Trindade Nascimiento, Marcelo, Imbrozio Barbosa, Reinaldo

“…Multivariate analysis demonstrated that the highest P. gracilipes abundance occurred in poorly drained (seasonal flooding) low-altitude habitats (<66 m), with high soil Fe+2 and Mg+2 concentrations. …”
Enlace del recurso
Enlace del recurso

Challenges and opportunities of genetic improvement in alpacas and llamas in Peru por Gutierrez, G., Gutierrez, J.P., Huanca Mamani, Teodosio, Wurzinger, M.

“…Both species are kept in extensive, low-input, pasture-based systems in altitudes between 3800 m and up to 5000 meters above sea level. …”
Enlace del recurso

Plan nacional de investigación en maíz.

“…El maíz se siembra en todo el territorio colombiano desde el nivel del mar hasta altitudes superiores a los 2800 metros. Se estima que la producción en el país, el 72 por ciento se usa para consumo humano directo (granos y chocló), el 23 por ciento para la industria de concentrados y alimentos humanos y el 5 restante corresponde a pérdidas y siembras. …”
Enlace del recurso