Resultados de búsqueda - "ecology"

Impact of maize expansion on household economy and production systems in northern Lao PDR por Keophosay, Anousith, Viau, J., Jobard, E., Castella, J.C.

“…However, current maize-based production systems may not be sustainable, neither ecologically nor economically. In 2009 and 2010, we studied the changes in landscapes and livelihood systems triggered by maize expansion in Xiengkhor district in Huaphan province and Kham and Nonghet districts in iengkhouang province. …”
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Growth and feed utilization potentials of local chicken ecotypes in Ethiopia por Dessie, Tadelle, Tadesse, M., Peters, Kurt J.

“…Five local chicken ecotypes originated from different Agro-ecologies namely, Tilili, Horro, Chefe, Jarso and Tepi were included. …”
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Identification of a target population for immunisation against East Coast fever in coastal Kenya por Maloo, S.H., Ngumi, P., Mbogo, S., Williamson, S., Thorpe, W.R., Rowlands, G.J., Perry, Brian D.

“…Six groups of five naive cross-bred (Bos taurus/Bos indicus) male calves, introduced at intervals of 2 months at a mean age of 26 days, were exposed to natural tick challenge on a high ECF-risk, small-holder farm in the coastal lowland, coconut¯cassava agro-ecological zone of coastal Kenya. Secondly, a challenge study evaluated the relationship between the presence of T. parva antibodies and immunity. …”
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Landscape context and scale differentially impact coffee leaf rust, coffee berry borer, and coffee root-knot nematodes por Avelino, Jacques, Romero Gurdian, R., Cruz Cuellar, H.F., DeClerck, Fabrice A.J.

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Mboga za Watu wa Pwani: Kilifi Utamaduni Conservation Group por Maundu, P., Bioversity International, International Fund for Agricultural Development, Yasuyuki, M., Towett, Erick K., Ombonyana, J.A., Obel-Lawson, E.

“…It provides local names of the vegetables in the different dialects (Mijikenda groups), scientific names, ecological and production information, method of preparation and mixtures involved. …”
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Participatory variety selection and variability of potato (Solanum tuberosum l.) varieties at Jimma Zonne, southwest Ethiopia por Hafiz, M.

“…Wider adaptation and researchers’ criteria may not fit to all agro ecologies and fulfill farmer’s preferences. In an attempt to identify suitable potato genotypes for Jimma zone. …”
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Lay knowledge and management of malaria in Baringo county, Kenya por Mutua, Edna N., Bukachi, S.A., Bett, Bernard K., Estambale, B.B.A., Nyamongo, I.K.

“…A questionnaire survey was administered to 560 respondents while qualitative data was collected through 20 focus group discussions in four ecological zones covering Baringo North, Baringo South and Marigat sub-Counties of Baringo County. …”
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Epidemiology of honey bee disease and pests in selected zones of Tigray Region, northern Ethiopia por Godifey, G.

“…There was statistically significant (p<0.05) variation in overall prevalence of Varroa infestation between comb age, colony strength, seasons and among agro ecologies (p<0.01).Management affected the observed prevalence of bee lice with the overall colony level prevalence of 27.% and 5.73% during honey flow and dearth period seasons, respectively. …”
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Hill placement of manure and fertilizer micro-dosing improves yield and water use efficiency in the Sahelian low input millet-based cropping system por Ibrahim, A., Abaidoo, Robert C., Fatondji, D., Opoku, A.

“…Inadequate nutrient supply and insufficient rainfall are the most important limiting factors for crop production in the Sahelian agro-ecological zones. Targeted technology application may help to improve the efficient use of limited nutrient and water resources. …”
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How is innovation in aquaculture conceptualized and managed? A systematic literature review and reflection framework to inform analysis and action por Joffre, Olivier M., Klerkx, Laurens, Dickson, Malcolm, Verdegem, Marc

“…Aquaculture has experienced spectacular growth in the past decades, during which continuous innovation has played a significant role, but it faces increasing criticism regarding its ecological and social sustainability practices and the resulting challenges for future innovation processes. …”
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Influence of available browse on cattle diets in an Acacia Savannah of East Africa. por Kibet, P.K.

“…Although Acacia sp. and Hermania alhiensis dominated the studv site, they ranked least in diet preference order. Further ecological research is needed to determine the influence by these woody species on herbage production in order to recommend the economic advantage of these dominant species. …”
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Economic development,institutions,and technique change: Intensification of cattle-feeding techniques by the Giriama of Kenya's coast province. por Swallow, K.A.

“…Emphasis was placed on one Giriama village located in the coconut-cassava agro-ecological zone. An historical analysis of the economic development of the Giriama was done using secondary literature. …”
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Combined application of biofertilizers and inorganic nutrients improves sweet potato yields por Mukhongo, Ruth Wilhem, Tumuhairwe, J.B., Ebanyat, Peter, AbdelGadir, Abdel Aziz H., Thuita, Moses N., Masso, C.

“…On-farm field experiments were conducted for two seasons in the Mt Elgon High Farmlands and Lake Victoria Crescent agro-ecological zones in Uganda to determine the potential of biofertilizers, specifically arbuscular mycorrhizal fungi (AMF), to increase sweet potato yields (NASPOT 11 cultivar). …”
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CERES-maize model for determining the optimum planting dates of early maturing maize varieties in northern Nigeria por Adnan, A.A., Jibrin, J. M., Kamara, A., Abdulrahman, B.L., Shaibu, A.S., Garba, I.I.

“…Delaying planting in both Agro-ecologies until mid-August leads to lower yields. Delaying planting to mid-August led to grain yield reduction of 39.2% for extra early maize and 74.4% for early maize in the Sudan Savanna. …”
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Benefits of inoculation, P fertilizer and manure on yields of common bean and soybean also increase yield of subsequent maize por Rurangwa, E., Vanlauwe, Bernard, Giller, Kenneth E.

“…We evaluated the benefits of inoculation combined with P fertilizer and manure on yields of common bean and soybean in three agro-ecological zones (AEZs), and their residual effects on a subsequent maize crop. …”
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Analysis of the legal framework for the Colombian cattle value chain por Burkart, Stefan, Díaz, Manuel Francisco, Enciso, Karen, Charry, Andrés, Muñoz Quiceno, Jhon Jairo, Ruíz, Rocío, Puerta Rodríguez, Cristhian David, Vivas Quila, Nelson J., Morales, Sandra, Albán López, Noé, Peters, Michael

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Candidate fodder species for goat production in Northern Ghana por Partey, Samuel T., Avornyo, Franklin K., Ouédraogo, Mathieu, Zougmoré, Robert B.

“…Among many CSA options at the CSV, the in-tegration of multipurpose trees on farmlands is promoted as a CSA practice for improving fodder availability, increas-ing overall farm productivity, improving ecological resili-ence and providing farmers with important safety net op-portunities against climate-related risks. …”
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Tillage and fertilizer effect on maize and soybean yields in the Guinea savanna zone of Ghana por Buah, Saaka S.J., Ibrahim, Hachim, Derigubah, Mavis, Kuzie, Martin, Segtaa, James Vuuro, Bayala, Jules, Zougmoré, Robert B., Ouédraogo, Mathieu

“…Background: The most limiting factors for sustainable maize production in smallholder farming systems of sub-Saharan Africa, especially the savanna agro-ecological zone, are erratic rainfall pattern and low soil fertility. …”
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Carbon stocks of intact mangroves and carbon emissions arising from their conversion in the Dominican Republic por Kauffman, J.B., Heider, C., Norfolk, J., Payton, F.

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Fragmentation increases wind disturbance impacts on forest structure and carbon stocks in a western Amazonian landscape por Schwartz, N., Uriarte, M.A, DeFries, Ruth S., Bedka, K.M., Fernandes, K., Gutiérrez Vélez, Victor Hugo, Pinedo Vasquez, M.

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