The purposes of this thesis are to examine experimental results obtained with subsurface irrigation of maize in 1988, and to provide preliminary plans and an economic analysis for the subsurface irrigation of maize in Richelieu County, Quebec. A mean increase in maize yield of 3.7 % was observed in 1988 on experimental plots with subsurface irrigation at the Charbonneau farm. However, a review of results obtained at the same experimental site from 1982 to 1988 indicated that the mean increase in maize yield with subsurface irrigation was 29 %. / Plans for two possible water supply systems designed to provide 180 mm a year of irrigation water for the subsurface irrigation of 1,250 ha in Richelieu County were considered. An economic analysis indicates that subsurface irrigation using groundwater has the greatest net benefits with an internal rate of return of 22.92 % and benefit to cost ratios of 1.90, 1.72 and 1.56 for discount rates of 8 %, 10 % and 12 % respectively. However, much of the groundwater in this region is saline and its use for irrigation may need to be restricted. Subsurface Irrigation using surface water from the Yamaska River was also profitable with an internal rate of return of 17.31 % and benefit to cost ratios of 1.66, 1.46 and 1.30 for the same discount rates.

<p>Oilseed is the third most important export item in Ethiopian foreign trade. It has registered a high export growth rate over recent years both in terms of volume and value. Besides its growing share in export, it is widely used for the extraction of edible oil and oilcake that is supplied to the domestic market. Although farmers are the primary producers of oilseeds, they are not able to benefit from the growing market share of the product due to the fact that they find themselves at the end of an extended market chain. As a result they only receive a very small proportion of what the final buyers are paying for the oilseed products. In addition, there is not much experience on the part of the farmers to process oilseeds, change it to edible oil and oilcake and retain the value addition in the local economy. This thesis used the value chain approach to investigate the possibilities for the primary producers to increase their income share from the selling of their products either by directly selling to exporters or by processing oilseeds, producing edible oil and oilcake, and retaining the value addition in the local economy.</p>

Alien invasive vegetation threatens the functioning of natural ecosystems as well as their services, which sustain human welfare, both directly and indirectly. The proliferation of this vegetation in South Africa has been attributed to the ignorance of the social implications affiliated to their existence. Investment decisions are predominantly based on the marginal private costs of an activity, since individuals have not been made accountable for costs imposed on society in the past. Consequently, their marginal private costs always fall well short of the marginal social costs. In order to promote sustainable development as well as curtail widespread invasion by alien plants in South Africa, it is essential to close the gap between these costs and support research aimed at ascertaining monetary values for non-market goods, such as biodiversity. This study scrutinizes the economic viability of alien plant eradication in the Mhlatuze Catchment by comparing the costs and benefits associated with this eradication process. A series of formal in-depth interviews with major stakeholders residing in the upper reaches of the catchment were conducted in an attempt to evoke individuals' perceptions concerning alien vegetation together with the actual costs incurred in extirpating this vegetation. The contingent valuation method (CVM), which relies on surveys to elicit the maximum amount respondents would be willing to pay to obtain or retain some nonmarket good, was employed to glean monetary values for benefits such as biodiversity and augmented streamflow. The findings suggest that there is a positive net effect associated with alien vegetation extirpation in the Mhlatuze Catchment, since the social benefits outweigh the costs. Given the temporal and financial constraints that prevailed, it was only possible to examine some of the benefits affiliated to this process, such as increased timber harvesting, streamflow, biodiversity and reduced fire hazard. Consequently, this analysis represents a minimum estimate of the benefits, further enhancing the argument in favour of extirpation. The results lend support to calls for greater policy emphasis on, as well as funds for, the eradication of alien invasive plants. / Thesis (M.A.)-University of Natal, Pietermaritzburg, 2001.

A fundamental change in the global and textile industries took place on 1 January 2005, when the global quantitative quotas were abolished. International retail buyers are now able to reduce the number of their international suppliers, and can act on a preference to buy from suppliers anywhere in the world, offering the cheapest price on international orders. South Africa had been experiencing growth in cheaper imports, mostly at the lower end of the market, since 1994 when the political arena in South Africa changed, resulting in a reduction of its tariffs faster than the World Trade Organisation required. The post-2005 environment has seen a rapid increase in imports into South Africa, predominantly from Asia. This has resulted in numerous South African firms in the clothing and textile industries having to reduce their labour, outsource part of their production, or close down altogether, due to their inability to compete with their Asian counterparts. One area of the clothing and textile industries in South Africa that has the potential to assist in the sustainability of these industries is the development and growth of South African design content. Relatively new to South Africa is the growth in and recognition of South African fashion designers entering the market, which has resulted in the heightened visibility and activity of numerous inter-related industries, all servicing South African fashion, such as: model agencies, hair-stylists, make-up artists, the fashion media, fashion events and private boutiques. This study explores the experiences of and problems faced by South African designers in producing garments, meeting the price demanded by consumers, and being competitive in the current context of the local market that is dominated by the major retail chains. However, as this research paper will show, numerous South African designers are managing in different ways to succeed and in so doing, have created viable and successful design operations in a very competitive industry. The participants interviewed for this study are all independent designers and successful in their own right. Some have been in the industry for many years, while others are establishing their names and brands in the marketplace. All these designers manufacture from their own atelier (studio) or factory, thereby retaining production control. As and when the need arises, some outsource part of their production to CMTs (cutmake- and-trim specialists) or home-based workers. Many of the designers sell within both the formal and informal economy, some sell their products through their own boutiques while others sell through private boutiques. A common theme of these designers' success is that they grew their business gradually, learning incrementally about the business of fashion and how to maintain control over their cash-flows while slowly growing their visibility in the market. In the interviews, the designers reflected on the importance of customer relations, the importance of Fashion Weeks for promoting their products, as well as the importance of finding reliable suppliers. A common difficulty experienced by the designers is that of finding the correct balance between creativity and commercial success. The study concludes with some recommendations for the promotion and sustainability of South African design content, such as development of co-operative ventures or small clusters of designers working together and creating economies of scale in order to wield greater influence in the value chain. Another important recommendation made is that of designers finding suitable business partners, so that while the designers focus on creative work, their partner drives the commercial and marketing arm of the operation. / Thesis (M.Dev.Studies)-University of KwaZulu-Natal, Durban, 2006

This research examines the treatment of Tuberculosis in South Africa, focussing particularly on the Pietermaritzburg-Msunduzi Council Area in the Natal province. Two alternative measures of TB control are examined, the clinical curative regime and inpatient treatment, that is, the hospitalisation of patients. The samples used are a random selection of patients treated through the Pietermaritzburg Clinic and SANTA Hospital. As this research entails a cost-effectiveness analysis determining the most cost-effective way of treating TB, much of the analysis and conclusions are derived from the costs entailed in the two aforementioned control measures. Cost analysis of the alternative measures of treatment reflects that the clinical outpatient alternative to TB treatment is more cost-effective than the hospitalisation option. A closer examination of the costs reveals the cost savings that can occur if an efficient use of resources is established. Furthermore the results reflect a cost effective drug use by the hospital at R173.65 per patient cured compared to R403.51 per patient cured through the clinic. Analysis of results showed institutional costs as the reason for the cost-ineffectiveness of hospital care. Overall, the clinical measure to the treatment of TB was more cost-effective at R490.34 per patient cured compared to the R7502.66 per person cured through hospitalisation. The sample sizes yielded cure rates of fifty-eight for the clinic and eighty-five percent for the hospital. / Thesis (M.Soc.Sc.)-University of Natal, Pietermaritzburg, 1999.

No description available.

No description available.

Graduation date: 1980

Graduation date: 1981

Photocopy of typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1979. / Bibliography: leaves 109-112. / x, 112 leaves ill. 29 cm