Resultados de búsqueda - "relator"

The relationship of farm surroundings and local infestation pressure to pest management in cultivated Passiflora species in Colombia? por Wyckhuys, Kris A.G., López Acosta, F.J., Rojas, M., Ocampo, J

“…(passionfruit; Violales: Passifloraceae), but little is known about how to control these pests in Passiflora orchards. Here, we relate agro-ecological knowledge and pest management of Colombian Passiflora producers to local Lonchaeid infestation levels and farm surroundings. …”
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Strategic assessment of the magnitude and impacts of sand mining in Poyang Lake, China por Leeuw, Jan de, Shankman, D., Wu, G., Boer, W. Fred de, Burnham, J., He, Q., Yesou, H., Xiao, J.

“…Planning will require consideration of both sand extraction in relation to available sediment resources and also environmental impacts within the context of future demand for sand in the lower Yangtze Valley. …”
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Exploring trade offs around farming livelihoods activities in smallholder crop livestock systems in Kenya por Karanja, S., Kungu, J., González Estrada, E., Tittonell, Pablo A., Ridder, N.A. de, Quirós, Carlos F., Herrero, Mario

“…Standard data files for running a variety of models and nutrient flows were generated for testing alternative scenarios related to poverty alleviation, soil fertility and the role of livestock. …”
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Credit access by smallholder livestock producers and implications for technology adoption: Policy options for improving the credit delivery system in South Vietnam. por Ho Cao Viet, Lapar, Ma. Lucila, Aragón, C.

“…This study describes the existing credit policies and programs in South Vietnam that are related to smallholder livestock production and Development; evaluates the implementation of current credit delivery systems and their impacts on farmers, focusing on implications for technology adoption by smallholder livestock farmers; and identifies and recommends policy options for improving the effectiveness of credit policies and institutions for smallholders. …”
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Farmers' preferences of cattle breeds, their market values and prospects for improvement in West Africa: A summary review por Kamuanga, M., Tano, K., Pokou, K., Jabbar, M.A., D'Ieteren, G.D.M.

“…Analysis of the relationships between breed preferences and breeding practices confirmed a strong trend away from Muturu (southwest Nigeria) and Baoule (southern Burkina Faso) - two West African shorthorn cattle known to be trypanotolerant-and identified the traits farmers find less desirable and traits more desirable relative to other breeds. Importantly, high preferences for disease resistance and relatively low preferences for standard off-take traits (milk and beef) suggest that indigenous breed preservation in situ and planned programmes for cattle breed improvement are both possible. …”
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Low input cattle production systems in tropical Africa: An analysis of actual and potential cow-calf productivity por Leeuw, P.N. de, Thorpe, W.R.

“…Trypanotorant cows in the sub-humid zone were relatively high-yielding (up to 30 kg) due to high extraction rates, suggesting that increased milk offtake may enchance overlal productivity. …”
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The role of impact assessment in evaluating agricultural investments in Eastern and Southern Africa por Anandajayasekeram, P., Babu, Suresh Chandra, Rukuni, M., Workneh, S.

“…Although IA of agricultural R&D gained momentum in the 1990s in Eastern and Southern Africa, relatively few of the studies in Africa have been published. …”
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Geographic Differentiation of Colombian Neoleucinodes elegantalis (Lepidoptera: Crambidae) Haplotypes: evidence for solanaceae host plant association and Holdridge life zones for g... por Díaz Montilla, Ana Elizabeth, Suárez Baron, Harold, Gallego-Sanchez, Gerardo, Saldamando Benjumea, C.I., Tohme, Joseph M.

“…The purpose of this study was to examine the population structure of Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae) in relation to host plant association and ecological Holdridge zones. …”
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Adaptive management: where are we now? por Rist, L, Campbell, Bruce M., Frost, P.

“…Over half of the studies reporting to implement AM claimed to have done so successfully, yet none quantified specific benefits, or costs, in relation to possible alternatives. Similarly those studies reporting to assess the approach did so only in relation to specific models and their parameterizations; none assessed the benefits or costs of AM in the field. …”
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Reducing uncertainty in nitrogen budgets for African livestock systems por Rufino, Mariana C., Brandt, P., Herrero, Mario, Butterbach-Bahl, Klaus

“…Livestock is poorly represented in N budgets for the African continent although some studies have examined livestock-related N flows at different levels. Livestock plays an important role in N cycling and therefore on N budgets including livestock-related flows. …”
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Impact of greenhouse gas metrics on the quantification of agricultural emissions and farm-scale mitigation strategies: a New Zealand case study por Reisinger, Andy, Ledgard, Stewart

“…We find that alternative metrics significantly change the balance between CH4 and N2O; in some cases, alternative metrics even determine whether a specific management option would reduce or increase net farm-level emissions or emissions intensity. However, the relative ranking of different farms by profitability or emissions intensity, and the ranking of the most cost-effective mitigation options for each farm, are relatively unaffected by the metric. …”
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Reducing vulnerability to hydro-meteorological extremes in Africa. A qualitative assessment of national climate disaster management policies: accounting for heterogeneity por Tall, Arame, Patt AG, Fritz, Steffen

“…Through extensive data mining, interviews and qualitative country assessments, we map where African countries lie on this spectrum of effective climate-related disaster risk management. We find that African countries lay at different levels on the spectrum of effective disaster risk management. …”
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Value chain analysis of the Kenyan poultry industry: The case of Kiambu, Kilifi, Vihiga, and Nakuru Districts por Okello, Julius J., Gitonga, Zachary, Mutune, Jane, Okello, Ruth M., Afande, Martin, Rich, Karl M.

“…The study areas were selected based on their relative density of poultry populations. A value chain approach was employed that entailed the use of semi-structured interviews and focus group discussions with various stakeholders including hatcheries, farmers, input sellers, processors, retailers and other intermediaries in four different value chains: commercial broilers, commercial layers/eggs, indigenous chicken, and guinea fowl/ducks.…”
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Local perspectives on climate change, Participatory Video in Somotillo, Nicaragua por Koningstein, Manon, Azadegan, Shadi

“…Participatory Video is a methodology premised on particular attitudes and behaviors that value collective and consensual decision-making and equalized power relations, seeking local solutions to local problems, through coming together, reflecting, communicating, and taking positive action. …”
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Disentangling the origins of cultivated sweet potato (Ipomoea batatas (L.) Lam.) por Roullier, C., Duputie, A., Wennekes, P., Benoit, L., Fernández Bringas, V.M., Rossel, G., Tay, D., McKey, D., Lebot, V.

“…We generated molecular genetic data for a broad sample of cultivated sweet potatoes and its diploid and polyploid wild relatives, for noncoding chloroplast and nuclear ITS sequences, and nuclear SSRs. …”
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Destocking as an emergency drought mitigation measure: lessons learned from the 2005 'Turkana emergency livestock off-take' intervention por Watson, D.J., Binsbergen, J. van

“…In addition the results are also considered in relation to the four stages of ANT, namely identification of problems and driving forces; identification of each agent's interests; enrolment of the actors and actants; and mobilization. …”
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Stream and shallow groundwater nutrient concentrations in an Ozark forested riparian zone of the central USA por Chinnasamy, Pennan, Hubbart, J.A.

“…Results indicate that in addition to relatively low residence time, lower nutrient concentrations in GW (relative to SW) may suggest that shallow GW flow processes are important for vegetation removal and retention of nutrients from streams in semi-karst shallow groundwater systems of the central USA.…”
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Expanding the Contribution of Early Warning to Climate-Resilient Agricultural Development in Africa por International Center for Tropical Agriculture, CGIAR Research Program on Climate Change, Agriculture and Food Security

“…Even in years when extreme events do not occur, the uncertainty that results from climate-related risk is an impediment to sustainable intensification of agriculture and adoption of climate-smart agricultural production practices. …”
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Toward a more resilient agriculture por Bennett, B., Carpenter, Stephen R., Gordon LJ, Ramankutty N, Balvanera, Patricia, Campbell, Bruce M., Cramer, W., Foley, Jon, Folke, C., Karlberg, L., Liu J, Lotze-Campen, Hermann, Mueller ND, Peterson GD, Polasky S, Rockström, Johan, Scholes, Robert J., Spierenburg, M.

“…Many proposals to accomplish this dual goal of increasing agricultural production while reducing its environmental impact are based on increasing the efficiency of agricultural production relative to resource use and relative to unintended outcomes such as water pollution, biodiversity loss, and greenhouse gas emissions. …”
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The gendered impacts of agricultural asset transfer projects: Lessons from the Manica smallholder dairy development program por Johnson, Nancy L., Njuki, Jemimah, Waithanji, Elizabeth M., Nhambeto, M., Rogers, M., Kruger, E.H.

“…Despite their recognized rights and responsibilities related to dairy cow management, women exercised relatively little control over milk and milk income as compared to men. …”
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