Resultados de búsqueda - Protab~

Genetic analysis of resistance to fusarium root rot in common bean por Mukankusi, Clare Mugisha, Derera, J., Melis, R, Gibson, PT, Buruchara, Robin Arani

“…Mid-parent heterosis (MPH) occurred in most crosses, with average heterosis approximately equal in each of the three generations, indicating that epistasis was probably more influential than dominance of individual genes. …”
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Within-farm soil fertility gradients affect response of maize to fertilizer application in Western Kenya por Vanlauwe, Bernard, Tittonell, Pablo A., Mukulama, J

“…Response to applied N was related to the soil total N content in Aludeka and Shinyalu, but not in Emuhaia, probably related to the high use of partially decomposed organic inputs with limited N availability. …”
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Acid monophosphatase: an indicator of phosphorus mineralization or of microbial activity? A case study from the Brazilian cerrados por Renz, TE, Neufeldt, Henry, Ayarza, Miguel Angel, Silva, J.E. da, Zech, W.

“…However, when combined with findings for microbial activity and Pi, it indicates the level of microbially available P, a lack of which probably implies strong competition between plants and microorganisms for this element.…”
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Determinants of adoption of improved haricot bean production package in Alaba special Woreda, Southern Ethiopia por Negash, R.

“…Four rural kebeles were selected purposively, and 160 household heads were selected randomly using probability proportional to size sampling. Structured interview schedule was developed, pre-tested and used for collecting the essential quantitative data for the study from the sampled households. …”
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Are dormancy management and physiological age the achilles' heel of aeroponic minituber production in seed potato value chains in SSA? por Lung'aho, C., Mbiyu, M., Nyongesa, M., Otieno, S., Onditi, J., Schulte-Geldermann, Elmar

“…Besides problems associated with failure of electricity supply and management of nutrition, the Achilles‘ heel of aeroponic minituber production is probably the large variation in physiological age of resulting tubers due to sequential harvesting that takes place over several months during the production cycle. …”
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Determinants of adoption of improved box hive in Atsbi Wemberta District of Eastern Zone, Tigray Region por Abebe, W.

“…The sample respondents were categorized into adopters and non-adopters of improved box hive. Based on probability proportional to size 45 adopters and 85 non-adopters were identified out of 130 total sample respondents. …”
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Towards a climate change adaptation strategy for coffee communities and ecosystems in the Sierra Madre de Chiapas, Mexico por Schroth, Götz, Läderach, Peter R.D., Dempewolf, Jan, Philpott, Stacy M., Haggar, Jeremy P., Eakin, Hallie, Castillejos, Teresa, García Moreno, Jaime, Soto-Pinto, Lorena, Hernández, Ricardo, Eitzinger, Anton, Ramírez Villegas, Julián Armando

“…A hotter climate with more irregular rainfall will be less favorable to the production of quality coffee and lower profitability may compel farmers to abandon shade coffee and expand other land uses of less biodiversity value, probably at the expense of forest. A comprehensive strategy to sustain the biodiversity, ecosystem services and livelihoods of the Sierra Madre in the face of climate change should include the promotion of biodiversity friendly coffee growing and processing practices including complex shade which can offer some hurricane protection and product diversification; payments for forest conservation and restoration from existing government programs complemented by private initiatives; diversification of income sources to mitigate risks associated with unstable environmental conditions and coffee markets; integrated fire management; development of markets that reward sustainable land use practices and forest conservation; crop insurance programs that are accessible to smallholders; and the strengthening of local capacity for adaptive resource management.…”
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Genotyping the local banana landrace groups of East Africa por Karamura, D., Kitavi, M., Nyine, M., Ochola, D., Ocimati, W., Muhangi, S., Talengera, D., Karamura, E.B.

“…This could widen the genetic base and probably improve performance of the triploid landraces.…”
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Methane and nitrous oxide emissions from cattle excreta on an East African grassland por Pelster, David E., Gisore, B., Goopy, John P., Korir, Daniel, Koske, J.K., Rufino, Mariana C., Butterbach-Bahl, Klaus

“…The low N content of the excreta likely caused the low emissions and indicates that current models probably overestimate CH4 and N2O emissions from African livestock manure.…”
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Microbial contamination along the main open wastewater and storm water channel of Hanoi, Vietnam, and potential health risks for urban farmers por Fuhrimann, S., Phuc Pham Duc, Cissé, G., Nguyen Thuy Tram, Hoang Thu Ha, Do Trung Dung, Pham Ngoc, Hung Nguyen-Viet, Tuan Anh Vuong, Utzinger, J., Schindler, C., Winkler, Mirko S.

“…Despite applied wastewater treatment, agricultural field irrigation water was heavily contaminated with TC (1.3 × 107 colony forming unit (CFU)/100 mL), E. coli (1.1 × 106 CFU/100 mL) and Salmonella spp. (108 most probable number (MPN)/100 mL). These values are 110-fold above Vietnamese discharge limits for restricted agriculture and 260-fold above the World Health Organization (WHO)'s tolerable safety limits for unrestricted agriculture. …”
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Gene flow in cowpea: field viability of wild and cultivated cowpea seeds and the hybrids between them por Fatokun, C.A., Boukar, O., Tamo, Manuele

“…Cowpea is seed propagated and when mature seeds are properly dried they could remain viable over a period of time depending on the genotype and storage conditions. …”
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Identification of schizont cDNAs located on a sub-telomeric fragment of the theileria parva genome. por Oluoch, K.R.

“…No homology was however, detected. This was probably due to lack of sensitivity to the-)nRNA by the probe due to presence of the ,,~ . former in low copy numbers. …”
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Application of secondary nutrients and micronutrients increases crop yields in sub-Saharan Africa por Kihara, Job Maguta, Sileshi, Gudeta W., Nziguheba, Generose, Kinyua, Michael, Zingore, Shamie, Sommer, Rolf

“…The major points are the following: (1) application of S and micronutrients increased maize yield by 0.84 t ha−1 (i.e., 25%) over macronutrient only treatment and achieved agronomic efficiencies (kilograms of grain increase per kilogram of micronutrient added) between 38 and 432 and (2) response ratios were >1 for S and all micronutrients, i.e., the probability of response ratio exceeding 1 was 0.77 for S and 0.83 for Zn, 0.95 for Cu, and 0.92 for Fe, and indicates positive crop response for a majority of farmers. …”
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Comparative study on the performance of dairy cooperative input and output marketing in Astbie Womerta, Alamata and Enderta woreda in Tigray region, Ethiopia por Mesfin, A.

“…All cooperatives except one were included in the study and a random sample of 120 respondents was selected based on probability proportionate to size. Data was analyzed using SPSS version 13.0 and statistical tools such as descriptive statistics and regression. …”
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Response of exotic sorghum (Sorghum bicolor [L.] Moench) cultivars to planting date under natural infestation of Striga hermonthica (Del) Benth. in the Sudan savanna zone of northe... por Kamara, A.Y., Ekeleme, F., Omoigui, L.O., Menkir, A., Chikoye, David, Dugje, I.Y.

“…Grain yields of KSV 8 and P9402 were greater for 5 July than for the other planting dates and decreased significantly as the planting date was delayed, probably due to long maturity period. The highest grain yields were obtained from P9405 and PSL985061 when planted on 12 July and 19 July, respectively. …”
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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.

“…Attempts at addressing the drought problem resulted in the conduct of a participatory community survey of maize production systems with about 20–40% probability of drought risk in four DTMA countries (Bénin Republic, Ghana, Mali, and Nigeria). …”
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Pathways from research on improved staple crop germplasm to poverty reduction for smallholder farmers por Alwang, Jeffrey, Gotor, Elisabetta, Thiele, Graham, Hareau, Guy, Chamberlain, J.

“…This has implications for the design of M&E and the crafting of appropriate targets for outcomes of research on staple crops which should focus perhaps on the other pathways where poverty reduction is more probable.…”
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Population size, distribution, and symbiotic characteristics of indigenous Bradyrhizobium spp. that nodulate TGx soybean genotypes in Africa por Abaidoo, Robert C., Keyser, H., Singleton, P., Dashiell, Kenton E., Sanginga, Nteranya

“…Soils of many potential soybean fields in Africa are characterized by low levels of biological nitrogen fixation (BNF) activities and often cannot support high soybean yields without addition of inorganic N fertilizers or external application of soybean rhizobia. The most probable number (MPN) technique was used to determine the bradyrhizobial populations that nodulate TGx soybean genotypes (a cross between nonpromiscuous North American soybean genotypes and promiscuous Asian soybean genotypes), cowpea or North American soybean cv. …”
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Influence of fallow type and landuse intensity on weed seed rain in a forest/savanna transition zone por Ekeleme, F., Okezie Akobundu, I., Isichei, A., Chikoye, David

“…Pueraria phaseoloides fallow was more effective in shading weeds and probably reducing the quantity of light reaching them than the natural bush and planted L. leucocephala fallow systems, and this may have been the basis of the significantly lower seed rain in P. phaseoloides plots.…”
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Enhanced surveillance for Rift Valley fever in livestock during El Niño rains and threat of RVF outbreak, Kenya, 2015-2016 por Oyas, H., Holmstrom, L., Kemunto, N.P., Muturi, M., Mwatondo, A., Osoro, E.M., Bitek, A., Bett, Bernard K., Githinji, J.W.K., Thumbi, Samuel M., Widdowson, M.A., Munyua, P.M., Njenga, M.K.

“…Of the 69 herds that met the suspect RVF herd definition (abortion in flooded area), 24 (34.8%) were defined as probable (abortions, mortalities in the young ones, and/or hemorrhagic signs) but none were confirmed. …”
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