Resultados de búsqueda - "Chang’an"

Cassava breeding II: phenotypic correlations through the different stages of selection por Barandica, Orlando Joaqui, Lenis Calderon, Jorge Iván, Calle, Fernando, Morante, Nelson, Pérez, Juan C., Hershey, Clair H., Ceballos, H.

“…DMC and FRY showed a weak positive association in SRT (r= 0.21) but a clearly negative one at UYT (r= -0.42). The change if the relationship between these variables is the result of selection. …”
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Socio-economic contribution of cassava varietal improvement to the small farmer communities in Asia por Kawano, Kazuo

“…The success or failure of any large-scale crop breeding program should be measured by achievement of the following step-by-step goals: 1) Establishment of a breeding program 2) Building of effective research capability 3) A large number of genotypes produced and evaluated 4) Selection of superior genotypes 5) A large number of cultivars released 6) A considerable area planted with new cultivars 7) Additional yield and quality as a result of the planting of new cultivars 8) Additional economic benefits generated by the adoption of new cultivars 9) The less privileged strata of society receive the greatest share of the profits 10) Beneficial social changes brought about by the planting of new cultivars Accomplishing all of these was our wildest dream when we established a major cassava breeding program at CIAT headquarters in Colombia more than 20 years ago. …”
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Evaluation of a topical formulation of eprinomectin against Anopheles arabiensis when administered to Zebu cattle (Bos indicus) under field conditions por Lozano Fuentes, S., Kading, R.C., Hartman, D.A., Okoth, Edward A., Githaka, Naftaly W., Nene, Vishvanath M., Poché, R.M.

“…At two weeks post-treatment, the total number of mosquitoes for any species per hut was not significantly different between the treatment and control areas. No change was observed in An. arabiensis host preference as a result of treatment. …”
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How might the gender roles affect the implementation of a new water-saving technique for Colombian rice production? : Report of gender dimensions in Colombian rice production por García, María Alejandra, Twyman, Jennifer, Katto, María Cristina, LaHue, Gabriel, Chirinda, Ngonidzashe

“…To sustainably reduce the contribution of rice to greenhouse gas (GHG) emissions, it is important to pursue management and technological options that reduce emissions and improve farmer productivity, adaptation and resilience to climate change impacts. Alternate wetting and drying (AWD) is a water-saving technique that helps farmers adapt to less water availability. …”
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Role of farmers in setting breeding goals por Subedi, Madu, Shrestha, P.K., Sunwar, Sharmila, Subedi, A.

“…In this way, the breeding program changed from increasing grain yield to reducing lodging in the target environment. …”
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Cassava agronomy research and adoption of improved practices in Vietnam por Nguyen, Huu Hy, Nguyen, The Dang, Pham, Van Bien

“…At the same time cassava production has changed from being a crop providing food for humans to being a cash crop. …”
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Soil carbon: a critical natural resource widescale goals, urgent actions por Nziguheba, Generose, Vargas, R., Bationo, B. André, Black, H., Buschiazzo, Daniel E., Brogniez, Delphine de, Joosten, H., Melillo, J., Richter, D., Termansen, Mette

“…Across the world, soil organic carbon (SOC) is decreasing due to changes in land use such as the conversion of natural systems to food or bioenergy production systems. …”
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Characterization of maize producing communities in Benin, Ghana, Mali, and Nigeria: West Africa Regional Synthesis Report por Abdoulaye, Tahirou, Bamire, A.S., Wiredu, A.N., Baco, M.N., Fofana, M.

“…Community members indicated that both positive and negative changes have taken place in the subregion over the 10-year period. …”
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Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda por Wilkus, Erin Lynn, Berny Mier y Teran, Jorge Carlos, Mukankusi, Clare Mugisha, Gepts, Paul L.

“…However, as farmers adopt new varieties, in situ population structure and genetic diversity of their seed holdings can change drastically. Consequences of adoption are still poorly understood due to a lack of crop genetic diversity assessments and detailed surveys of farmers' seed management practices. …”
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Wound healing and dry matter content of orange-fleshed sweetpotato cultivars as influenced by curing methods por Atuna, R.A., Carey, E.E., Low, Jan W., Amagloh, F.K.

“…In this study, two orange fleshed sweetpotato cultivars (Apomuden and Nane) were either cured in-ground by dehaulming prior to harvest or field-piled over a seven-day period to study their responses to wound healing and changes in dry matter content. Apomuden is a low dry matter content(19%) variety in Ghana while Nane is a high dry matter content (27%) farmer cultivar under evaluation for formal release. …”
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Assessing the role of market integration in the consumption of traditional foods in Benin: a joint price instability coefficient and diet composition approach por Honfoga, B.G., N’tandou-Bonzitou, G., Vodouhe, R.S., Bellon, M.R., Hounhouigan, Joseph D.

“…Globalization-driven food trade policies and the transformations of food regimes have led to modernizing food habits and the growing substitution of traditional foods by introduced/industrialized foods in the diets of urban people in sub-Saharan Africa. Such changes in food consumption habits are suspected to be associated with the increasing prevalence of some non-transmittable food-related diseases in the region. …”
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Assessing the Claims of Participatory Measurement, Reporting and Verification (PMRV) in Achieving REDD+ Outcomes: A Systematic Review por Hawthorne, S.D., Boissiere, M., Felker, M.E., Atmadja, S.

“…Participation of local communities in the Measurement, Reporting and Verification (MRV) of forest changes has been promoted as a strategy that lowers the cost of MRV and increases their engagement with REDD+. …”
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Multiple pathways of commodity crop expansion in tropical forest landscapes por Meyfroidt, Patrick, Carlson, K.M., Fagan, Matthew E., Gutiérrez Vélez, Victor Hugo, Macedo, M.N, Curran, L, DeFries, Ruth S., Dyer, G.A., Gibbs, H.K, Lambin, E.F., Morton, D.C, Robiglio, Valentina

“…Commodity crop expansion, for both global and domestic urban markets, follows multiple land change pathways entailing direct and indirect deforestation, and results in various social and environmental impacts. …”
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The socioeconomic and environmental impacts of wood energy value chains in Sub-Saharan Africa: a systematic map protocol por Cerutti, P.O., Sola, P., Chenevoy, A., Iiyama, Miyuki, Yila, Jummai Othniel, Zhou, W., Djoudi, H., Eba'a Atyi, R., Gautier, D., Gumbo, D.J., Kuehl, Y., Levang, P., Martius, C., Matthews, R., Nasi, Robert, Neufeldt, Henry, Njenga, M., Petrokofsky, G., Saunders, M., Shepherd, G., Sonwa, D.J., Sundberg, C., Noordwijk, M. van

“…For instance, in addition to the direct socioeconomic impacts felt by participants in the wood energy value chain, forest dwellers may experience livelihood changes due to forest degradation caused by external harvesters. …”
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Agricultural intensification exacerbates spillover effects on soil biogeochemistry in adjacent forest remnants por Didham, R.K., Barker, G.M., Bartlam, S., Deakin, E.L., Denmead, L.H., Flak, L.M., Peters, J.M.R., Tylianakis, Jason M., Wright, H.R., Schipper, L.A.

“…This suggests movement of livestock into surrounding natural habitats is a significant component of agricultural spillover, but pervasive changes in soil biogeochemistry still occur through nutrient spillover channels alone, even in fenced remnants set aside for conservation. …”
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Reconciling forest conservation and logging in Indonesian Borneo por Gaveau, D.L.A., Kshatriya, Mrigesh, Sheil, D., Sloan, S., Molidena, E, Wijaya, A., Wich, S., Ancrenaz, M., Hansen, M, Broich, M, Guariguata, Manuel R., Pacheco, P., Potapov, Peter, Turubanova, S.A., Meijaard, E.

“…An estimated 25% of lands allocated for timber harvesting in 2000 had their status changed to industrial plantation concessions in 2010. …”
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Socioeconomic and environmental effects of China's Conversion of Cropland to Forest Program after 15 years: a systematic review protocol por Gutiérrez Rodríguez, L., Hogarth, N.J., Zhou, W., Putzel, L., Xie Chen, Zhang, Kun.

“…Following 15 years of implementation, it is timely to conduct a comprehensive assessment of the state of knowledge about the CCFP’s impacts on human populations and the environment.The primary research question asks “What socioeconomic and environmental effects has the Conversion of Cropland to Forest Program had on human populations and land resources during its first 15 years in China?” We use a theory of change and a Population-Intervention-Comparator-Outcome (PICO) framework to structure our systematic review, where populations of interest consist of both human populations and land resources targeted by the program, while the intervention of interest is the CCFP as defined by its component activities, including compensatory subsidies, skill-training, and enforcement with field checks. …”
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A systems approach to assess crop health and maize yield lossess due to pests and diseases in Cameroon por Cardwell, K.F., Schulthess, F., Ndemah, R., Ngoko, Z.

“…Stem diameter, cob fill and weight increased with altitude reflecting the change from early maturing lowland cultivars to very late maturing mid- to high-altitude cultivars. …”
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Community-managed groundwater irrigation on the Vientiane Plain of Lao PDR: planning, implementation and findings from a pilot trial por Clement, C., Vinckevleugel, Jordan, Pavelic, Paul, Xiong, K., Valee, L., Sotoukee, T., Shivakoti, B. R., Vongsathien, K.

“…Households in Ekxang village on the Vientiane Plain, for example, depend on rainfall for the cultivation of rice during the wet season and a wide range of vegetables and herbs in the dry season. Climate change poses a growing threat to crop production in such villages, altering wet season rainfall and making drought more common and severe. …”
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High N2O consumption potential of weakly disturbed fen mires with dissimilar denitrifier community structure por Buchen, C., Roobroeck, D., Augustin, J., Behrendt, U., Boeckx, P., Ulrich, A.

“…Ambient air in headspaces were first substituted with a He-O2 trace gas mixture to quantify N2O and N2 exchanges under prevailing soil oxygen (O2) conditions, and then with an anoxic He trace gas mixture (99.9% He) for establishing the maximum possible denitrification rate. Changing from the He-O2 mixture to a pure He trace gas mixture led to strong increase of N2 fluxes (up to 2916 μg N m−2 h−1) and negative N2O fluxes of up to −72 μg N m−2 h−1. …”
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