Resultados de búsqueda - "Zimbabwe"

Livelihood challenges posed by water quality in the Mzingwane and Thuli River Catchments Zimbabwe por Love, David, Moyce, W., Ravengai, S.

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Evaluation of the groundwater-potential of the Malala Alluvial Aquifer Lower Mzingwane River Zimbabwe por Masvopo, T., Love, David, Makurira, H.

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Start end and dry spells of the growing season in semi-arid southern Zimbabwe por Mupangwa, W., Walker, S., Twomlow, Stephen

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Evaluation of the groundwater potential of the Malala alluvial aquifer lower Mzingwane river Zimbabwe por Masvopo, T.H.

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Local participation in transboundary water resources management: the case of Limpopo Basin Zimbabwe por Fatch, J.J.

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Short Report on Masters research in progress in the Mzingwane Catchment Zimbabwe 2006/7 por Love, David

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ICT-Based Identification and Characterisation of Small Reservoirs in the Limpopo River Basin in Zimbabwe por Mulengera, Patrick-M. Bahal’okwibale, Manzungu, Emmanuel, Kileshye Onema, Jean-Marie

“…Semi-arid conditions that prevail in the Limpopo basin in general and Zimbabwe in particular emphasise the importance of water storage. …”
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Evaluation of grazing lands of Zimbabwe using AVHRR normalised difference vegetation index por Kruska, Russell L., Perry, Brian D.

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Heartwater and the economics of livestock production on large scale commercial and smallholder farms in Zimbabwe por Chamboko, Tafireyi, Mukhebi, A.W., O'Callaghan, C.J., Peter, T.F., Kruska, Russell L., Medley, G.F., Mahan, S.M., Perry, Brian D.

“…In order to assess the economic impact of heartwater (Cowdria ruminantium infection) and model the impact of improved vaccines against the disease, a field study was conducted to provide data on livestock productivity indicators in Zimbabwe. Cross-sectional studies were performed in the two main agro-ecological regions, lowveld and highveld, where heartwater was thought to be endemically stable and epidemic, respectively. …”
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Tick and tick-borne disease control in Zimbabwe: What might the future hold por Norval, R.A.I., Perry, Brian D., Hargreaves, S.K.

“…Compulsory short-interval dipping of cattle for tick control has been enforced in Zimbabwe since the early part of this century. Intensive dipping was initially introduced as a measure to control East Coast fever (ECF), following its introduction from eastern Africa. …”
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The economics of integrated tick and tick-borne disease control on commercial farms in Zimbabwe por Perry, Brian D., Chamboko, Tafireyi, Mahan, S.M., Medley, G.F., Minjauw, B., O'Callaghan, C.J., Peter, T.F.

“…In a survey conducted in 1995-96 of 37 predominantly beef farms in Harare, Zimbabwe, mortality was higher in cattle treated >30 times with acaricide than in those with a less intensive programme. …”
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Distributions of the vectors of heartwater, Amblyomma hebraeum and amblyomma variegatum (Acari: Ixodidae), in Zimbabwe por Peter, T.F., Perry, Brian D., O'Callaghan, C.J., Medley, G.F., Shumba, W., Madzima, W., Burridge, M.J., Mahan, S.M.

“…The tick vectors of heartwater (Cowdria ruminantium infection) in Zimbabwe, Amblyomma hebraeum and Amblyomma variegatum, historically were believed to be confined to the low-lying regions of the south and north-west of the country. …”
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An assessment of the economic impact of heartwater (Cowdria ruminantium infection) and its control in Zimbabwe por Mukhebi, A.W., Chamboko, Tafireyi, O'Callaghan, C.J., Peter, T.F., Kruska, Russell L., Medley, G.F., Mahan, S.M., Perry, Brian D.

“…The University of Florida/USAID-supported heartwater research project (based in Zimbabwe) is developing a new inactivated vaccine to control the disease. …”
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Managing soil fertility to adapt to rainfall variability in smallholder cropping systems in Zimbabwe por Rurinda, J.P., Mapfumo, Paul, Wijk, Mark T. van, Mtambanengwe, F., Rufino, Mariana C., Chikowo, Regis, Giller, Kenneth E.

“…In this study we combined field experimentation and long-term rainfall analyses in Makoni and Hwedza districts in eastern Zimbabwe to evaluate cropping adaptation options to climate variability. …”
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Decentralising Zimbabwe’s water management: The case of Guyu-Che- lesa irrigation scheme por Tambudzai, Rashirayi, Everisto, Mapedza, Gideon, Zhou

“…Comparative analysis was carried out as Guyu-Chelesa irriga- tion scheme was compared with other smallholder irrigation scheme’s experiences within Zimbabwe and the Sub Saharan African region at large. …”
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Comparison of indigenous and foreign cattle for beef production at Matopos Research Station in Zimbabwe por Mpofu, N.

“…Cattle breeds regarded as indigenous to Zimbabwe include the Mashona, Tuli and Nkone. History of the breeds, their development and promotion, and development of breed societies for each breed is described by Harvey (1987). …”
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Beef supply price response estimation and implications for policy analysis: The Zimbabwe case por Rodríguez, G.

“…Illustrates the role of supply price elasticities in policy making and analysis, and discusses the experience with respect to the sensitiveness of beef supply price elasticities estimated for commercial farms in Zimbabwe and the corresponding policy implications…”
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A multiple matrix model to study the population dynamics of R. appendiculatus in Zimbabwe por Mwambi, H.G., Odhiambo, J.W., Duchateau, L.

“…We use data from the highveld of Zimbabwe Reported in Short et al. (1989a,b). The model incorporates the seasonality patterns in the site by means of a matrix chain which is a matrix product describing the seasonal cycle in the year. …”
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A spatially predictive logistic regression model for occurrence of theileriosis outbreaks in Zimbabwe por Pfeiffer, Dirk U., Duchateau, L., Kruska, Russell L., Ushewokunze-Obatolu, U., Perry, Brian D.

“…In this study a logistic regression model was developed to estimate the probability of theileriosis occurrence in Zimbabwe, and the usefulness of measures of model goodness-of-fit for decision makers was investigated. …”
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A study of the effects of heartwater and its control on livestock productivity and economics in Zimbabwe por Perry, Brian D., Chamboko, Tafireyi, Mahan, S., Medley, G.F., Mukhebi, A.W., O'Callaghan, C.J., Peter, T.F.

“…In most of the rest of the continent, the main vector is A. variegatum, and it is in Zimbabwe that the distributions of these two vectors now overlap. …”
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