Resultados de búsqueda - "Chang’an"

Improving water productivity in mixed crop-livestock farming systems of sub-Saharan Africa por Descheemaeker, Katrien K., Amede, Tilahun, Haileslassie, Amare

“…In sub-Saharan Africa problems associated with water scarcity are aggravated by increasing demands for food and water, climate change and environmental degradation. Livestock keeping, an important livelihood strategy for smallholder farmers in Africa, is a major consumer of water, and its water consumption is increasing with increasing demands for livestock products. …”
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A two-dimensional outcome pathway model for research for development (R4D) programs por Bayot, Ruvicyn S., Douthwaite, Boru

“…To successfully meet the program goal, a project’s outcome pathway must be designed in such a way that makes the project theories of change explicit. The project must make explicit the cause and effect logic, by which its research will help achieve developmental outcomes. …”
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Choosing appropriate responses to groundwater depletion por International Water Management Institute

“…With growing populations, changing weather patterns, and increasing pollution of surface water bodies, countries across the world are relying more and more on finite groundwater reserves built up over centuries, for household, agricultural, and industrial needs. …”
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Assessment of local land and water institutions in the Blue Nile and their impact on environmental management por Hagos, Fitsum, Haileslassie, Amare, Awulachew, Seleshi Bekele

“…We highlighted major institutional and policy gaps and actions that are required to respond to emerging issues of environmental degradation, upstream/downstream linkages and climate change. Such analysis of institutions and their design features provides useful insights and contributes to the debate on institutional reform for improved land and water management in the Blue Nile Basin, in general. …”
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Can small reservoirs enhance sustainable agricultural development in Sub-Saharan Africa?: broadening the analytical horizons por Venot, Jean-Philippe, Hirvonen, M.

“…As such, they do act as motors of social change, but in considerably more complex ways than is conventionally claimed. …”
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Role of brokerage in evolving innovation systems: A case of the Fodder Innovation Project in Nigeria por Madzudzo, E.

“…Innovation capacity influences how actors respond to changes in their environments. In such dynamic environments well connected sets of actors are at an advantage in that they can combine skills to address the emerging opportunities and challenges. …”
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Investigation of the risk of exposure to antimicrobial residues present in marketed milk in Tanzania por Kurwijila, Lusato R., Omore, Amos O., Staal, Steven J., Mdoe, N.S.Y.

“…Concerns about food safety are increasing in developing countries where urbanization and changing life styles are associated with greater dependence on marketed foods. …”
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Malformations and mortality in the Asian common toad induced by exposure to Pleurolophocercous cercariae (Trematoda: Cryptogonimidae) por Jayawardena, U.A., Tkach, V.V., Navaratne, A.N., Amerasinghe, Priyanie H., Rajakaruna, R.S.

“…Severe malformations have also been reported in the Common Hourglass Tree Frog, Polypedates cruciger induced by Pleurolophocercous cercariae in Sri Lanka in addition to the changes in the behaviour, development and survival of the host. …”
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Satisfying future water demands for agriculture por Fraiture, Charlotte de, Wichelns, Dennis

“…The global demand for water in agriculture will increase over time with increasing population, rising incomes, and changes in dietary preferences. Increasing demands for water by industrial and urban users, and water for the environment will intensify competition. …”
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Monitoring spatial distribution of commercial rattans and palms in the tropical forest of Baratang Islands (Andaman and Nicobar Islands) por Nagabhatla, Nidhi, Roy, P.S., Jagdale, R.

“…The initiative requires not only assessment of the change in vegetation pattern over years but continuous monitoring of associated diversity as well. …”
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Improvement in water-holding capacity and structural stability of a sandy soil in northeast Thailand por Suzuki, Shinji, Noble, A.D., Ruaysoongnern, Sawaeng, Chinabut, N.

“…In the present study, physical properties associated with water holding capacity and soil structural stability of an upland soil of the Satuk series in Northeast Thailand were investigated two years after the application of these amendments. Although changes in silt and clay fraction were small, the application of these amendments enhanced porosity and altered the pore size distribution resulting in an increase in the available water content for crop growth. …”
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Importance of waste stabilization ponds and wastewater irrigation in the generation of vector mosquitoes in Pakistan por Mukhtar, M., Ensink, J., Hoek, W. van der, Amerasinghe, Felix P., Konradsen, Flemming

“…Regular removal of emergent grass along the margins of the anaerobic ponds and changes in the concrete design of the ponds are likely to reduce the mosquito production, especially of Culex species.…”
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Carbohydrate metabolism and cell protection mechanisms differentiate drought tolerance and sensitivity in advanced potato clones (Solanum tuberosum L.) por Legay, S., Lefevre, I., Lamoureux, D., Barreda, C., Tincopa, L.R., Gutiérrez, R., Quiróz, R., Hoffman, L., Hausman, J.F., Bonierbale, Merideth W., Evers, D., Schafleitner, R.

“…Development of drought-tolerant cultivars is therefore required for maintaining yields under climate change conditions and for the extension of agriculture to sub-optimal cropping areas. …”
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Simulation of resource-conserving technologies on productivity, income and greenhouse gas GHG emission in rice-wheat system por Saharawat, Yashpal S., Ladha, Jagdish Kumar, Pathak, Himanshu, Gathala M, Chaudhary, N., Jat, Mangi Lal

“…The excessive utilization of natural resource bases and changing climate are leading to the negative yield trend and plateauing of Rice-wheat (RW) system productivity. …”
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Chlorophyll index, photochemical reflectance index and chlorophyll fluorescence measurements of rice leaves supplied with different N levels por Shrestha, S., Brueck H, Asch, F.

“…Additionally to handheld devices for measurements of chlorophyll indices (e.g., SPAD meter) parameters of canopy reflectance via remote sensing approaches are intensively investigated and the photochemical reflectance index (PRI) appears to be a reliable indicator for changes of the epoxidation state of xanthophyll cycle pigments. …”
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Food security in a perfect storm: using the ecosystem services framework to increase understanding por Poppy, GM, Chiotha, S, Eigenbrod, F., Harvey, Celia A., Honzak, M, Hudson, MD, Jarvis, Andy, Madise, NJ, Schreckenberg, Kate, Shackleton, Charlie M., Villa, F., Dawson, T.P.

“…Achieving food security in a ‘perfect storm’ scenario is a grand challenge for society. Climate change and an expanding global population act in concert to make global food security even more complex and demanding. …”
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Another dimension to grazing systems : Soil carbon por Fisher, Myles J., Santos, R.S.M. dos, Alves, Bruno J.R., Boddey, Robert M., Braz, S.P., Urquiaga, S.

“…Heavy stocking rates profoundly change the N cycle and lead to N deficiency and hence degradation in the bulk pasture area by concentrating N recycling from faeces and urine in rest areas and watering points. …”
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Colony dimorphism in Bradyrhizobium strains por Sylvester-Bradley, Rosemary, Thornton, Philip K., Jones, Peter G.

“…Whole 7-day-old colonies of each type were subcultured to determine the proportion of cells which had changed to the other type. An iterative computerized procedure was used to determine the rate of switching per generation between the two types and to predict proportions reached at equilibrium for each strain. …”
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Dry season performance of four tropical pasture legumes in subhumid west Africa as influenced by superphosphate application and weed control por Peters, Michael, Tarawali, Shirley A., Alkamper, J.

“…The decline of nutritive value during the dry season was largely a function of changes in leaf/stem/litter proportions. It is suggested that drought tolerance and capacity to retain leaf should receive more attention when evaluating forage species to be used in the dry season. …”
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Efecto de la suplementación con heno de Calliandra calothyrsus y Vigna unguiculata sobre la producción de leche en bovinos en Colombia por Bernal, L., Ávila, P., Ramírez, G., Lascano Aguilar, Carlos Eduardo

“…The quality milk don't change between treatments for fat, totals solid and non fat solids. …”
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