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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Performance of wild watermelon (Citrullus lanatus L.) in response to population density and mulch.

Mtumtum, Noxolo Penelope. January 2012 (has links)
The wild watermelon, Citrullus lanatus L. was among the most important foodstuffs to a number of African communities, until the colonists introduced their own foodstuffs in a process that was highly supported by the laws of the time. However, there is now a growing realization by government and other stakeholders of the importance of indigenous crops (including the wild watermelon) as substitute food stuff to improve food security. Wild watermelon is an adaptable crop, which can contribute to food security as it has a potential for commercialization. However, there are no records on the production of wild watermelon with reference to optimum planting density and the effects of mulch on the growth and development of the crop. To investigate this issue, which the smallholder farmers are faced with, a study that designed to (a) determine the effects of population density on growth and yield of wild watermelon and (b) investigate the effects of mulching on growth and yield of wild watermelon under field conditions. The study was undertaken over two seasons during which two different types of propagules, namely seed and seedlings, were used. A field study of wild watermelon establishment and yield using seeds and seedlings to compare the effects of different population densities (3000, 6000, 9000 and 12000 plants/ha) and mulching rates (0, 2.5 and 5 t/ha) based on the availability of grass on soil water, temperature, vine length (height), number of branches and leaves per plant, fruit number, total yields, fruit size and weed distribution was conducted at Dohne Agricultural Development Institute (Lat-32.52521; Long – 27.46119, alt. 907 m above sea-level) over a two year period ( 2009 – 2011 growing season). Results on data collection and analysis of growth and yield parameters are that: When seed was used as means of propagation, there were significant effects (p 0.05) of mulching and population density, on soil temperature and volumetric water content. However, no significant differences were found with regards to vine length, number of branches and leaves per plant. Concerning yield, there were no significant differences recorded on any of the measured parameters in response to mulch. Yet, with population density, significant differences were noted on fruit number per hectare and total yield at p 0.05. The number of fruits and total yield per hectare increased as plant population increased, resulting in high yields to range from 9000 -12 000 plants per hectare with both seed and seedling propagules used during the study period with or without mulching. Seedling propagules were associated with differences in soil temperature and volumetric water content with regards to mulching and population density (p 0.05). Results obtained from this study in both years, revealed that yield is more influenced by plant population density than by mulching. Mulching has been found to be ineffective as far as growth and yield are concerned, but it was found to influence soil temperature and volumetric water content. / Thesis (M.Sc.Agric.)-University of KwaZulu-Natal, Pietermaritzburg, 2012.
2

Determining the potential for smallholder organic production among three farming groups through the development of an empirical and participatory decision support tool.

Thamaga-Chitja, Joyce Magoshi. January 2008 (has links)
Organic farming is increasingly viewed as a plausible production system for sustainable agriculture for smallholder farmers. However, there is not enough scientific evidence and knowledge to advocate certified organic farming for African smallholder farmers who face several constraints related to production, storage and marketing. The potential for organic farming for smallholder farmers, faced by these constraints, is not clearly defined. As a result, this study set out to evaluate the production potential of organic agriculture among three smallholder farmer groups. Production questions were used to investigate and evaluate the potential for organic agriculture among three smallholder farmer groups and constituted the following subproblems: · What crops can be grown in the three study areas, based on climatic data ? · Do farmers concur that these are the most suitable potential organic crops? · How useful do the farmers find the decision making tool? · What constraints threaten commercial production of the identified crops for these farmers? Participatory methodologies that included the use of Force Field Analysis, discussions and workshops were used to identify organic production constraints related to production decisions. Farmers faced constraints related to finance, capacity enhancement, technical knowledge, fencing, irrigation, and a lack of, or inappropriately trained extension officers. As a response to identified production constraints, a decision support tool was developed. Natural resource data, including climatic and agronomic data, was used to create a specially calibrated Microsoft Excel spreadsheet interface that functions as an empirical organic production decision support tool for organic and aspirant organic smallholder farmers, by providing answers for farmer-prioritised production constraints. A list of potential crops for each of the three study areas was subjected to a series of checks against suitability for climate and disease conditions and nutrient requirements. A limited supply of manure, to meet the enormously high requirements for organic production in the poor soils of these areas, is the major constraint to exclusive organic production and renders certified organic production difficult and unsustainable. Farmers disagreed with some of the crops on the list, arguing that familiar crops were rejected by the model, but they were excited by the prospects for production of “new” crops suggested as suitable by the decision support tool, but not yet grown in the study areas. End users welcomed the model and expressed the opinion that it would be useful in decision making related to organic crop production. The study concludes that, although a number of agronomically-suitable crops can grow in the study areas, organic production is restricted by rather high manure requirements, lack of compost making skills, lack of knowledge on natural pest and disease control and poorly nourished soils, leading to poor yields. The rainy season creates a disease-supporting environment, rendering organic farming risky for rain-fed smallholder farming. Risk in certified organic farming for smallholders was further exacerbated by a hardly inconducive policy environment that low literacy levels exist amongst farmers. This study is innovative for three reasons. First, farmers were true participants and drivers of the research. Second, trans-disciplinary expert seminars were attended by experts from different disciplines who critiqued the conceptualisation, design, and implementation of the study. Third, the development of a practical decision-support tool shows innovation towards solving complex smallholder farmers decisions. If organic farming is to be promoted, commitment by government is needed in order to establish policy and legislation on organic farming to direct and govern training, information provision and marketing. Intensive training and knowledge building of organic production for smallholder farmers and extension officers is critical. There are also agroecological risks associated with organic farming for smallholder farmers. Recommendations for future research include comparison between organic agriculture and conventional agriculture, where sustainability of certified organic farming and economic viability can be conducted in the South African context. Improvement of the decision making tool will require involving information technology specialists so that the tool can be installed in community centres, extension offices and other accessible places for farmers and others. / Thesis (Ph.D.)-University of KwaZulu-Natal, Pietermaritzburg, 2008.
3

Improving access by smallholder farmers to organic crop supply chains : evidence from the Ezemvelo Farmers' Organization, KwaZulu-Natal, South Africa.

Mushayanyama, Tinashe. January 2005 (has links)
The 48 members of the Ezemvelo Farmers' Organisation (EFO) in KwaZulu-Natal (KZN), South Africa (SA), that were fully-certified as organic farmers were surveyed during October-December 2004 to assess their perceived level of satisfaction, trust, cooperation and commitment in a formal supply chain producing amadhumbes (a traditional vegetable tuber), potatoes and sweet potatoes for a major SA supermarket group. Empirical recursive models show that a high level of satisfaction in the working relationship results in these farmers trusting the pack-house agent more. High levels of trust, in turn, lead to higher levels of both commitment to, and cooperation in, the supply chain. A simultaneous-equation model showed that EFO farmers with higher levels of commitment tend to be more cooperative, and that members with higher levels of cooperation tend to be more committed toward the working relationship. These results suggest that strategies to improve the working relationship with the pack-house agent need to promote satisfaction, trust, cooperation and commitment. For example, co-investment in better crop storage facilities at farm-level would promote satisfaction and hence trust. There is also scope for more cooperation in the planning of new organic crop products to grow and market, and to remove some price uncertainty by giving EFO farmers more information about prices that they will be paid by the pack-house agent in this supply chain. In addition, satisfaction and, hence, trust, cooperation and commitment may be improved by adopting a formal contract between the EFO farmers and the pack-house agent to replace the current, incomplete verbal contract that governs trading. Some issues that may be addressed in this contract are improved communication systems via regular meetings, renegotiations of trading terms so that farmers can benefit from positive changes in organic crop prices; guidelines for paying farmers more quickly by the pack-house agent; mechanisms to trace crop quality to a specific farmer to avoid free riding; and penalties for breaching the contractual arrangements. The 48 EFO farmers were also asked to give their perceptions of the main constraints on organic crop production and marketing in the formal organic crop supply chain. They perceived that uncertain climate, unavailability of tractor or draught power when needed, delays in payments for crops sent to the pack-house, lack of affordable inputs (particularly labour and manure), a lack of cash and credit to finance inputs, lack of affordable transport to market crops, more work than the family can handle, a lack of manure to purchase; and a lack of crop storage facilities and telephones to negotiate sales as the current top 10 constraints. Principal Component Analysis summarized the underlying dimensions in the 20 constraints ranked by these farmers as indicating "lack of market information and lack of market power"; "crop production expansion constraints"; "commitment to crop area expansion"; "lack of liquidity"; "lack of proper storage facilities"; and "lack of information about alternative markets". Potential solutions to better manage these perceived constraints include: improved risk management practices (e.g., supplemental irrigation, water-harvesting and small boreholes), improving access to tractor services via improved tractor scheduling or using local contractor services, quicker pack-house delivery payments, improving quality inspection at the departure points at EFO farm-level to reduce crop rejection rates and "free riding" by producers of lower quality organic crops, more interaction with the retailer to promote sales of organic crops, providing advice on how the EFO farmers can improve their bargaining power, and providing more information (e.g. crop prices) about other organic markets and changing consumer preferences. Apparently, the costs and benefits of these potential solutions, and how they will be financed, need to be evaluated. Real accounting marketing margins since 2001 showed that the farmer's share of the consumer's rand for the 48 fully certified organic EFO farmers rose, while their net returns (selling price less accounting costs) were lower than those of the pack-house agent and hawkers selling at the Isipingo market on the South Coast of KZN. Net returns for the 48 EFO farmers also seemed to be relatively higher if they sold through the informal supply chain (hawkers) rather than the formal supply chain. The EFO farmers' net returns may be improved by lowering operating costs and by aggressive marketing to customers willing and able to pay a price premium for organic crops. These farmers may also consider performing some of t he marketing services themselves (e.g. crop cleaning, grading and packaging) if they have the skills and can access more finance. There are, however, hidden benefits from maintaining the formal supply chain relationship, as the pack-house agent helped to secure tractor services and fencing, and facilitates access to the retailer. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2005.
4

Response of local wild mustard (Brassica species) landraces to water stress.

Mbatha, Thobile Precious. January 2010 (has links)
Wild mustard is an indigenous leafy vegetable. Its use is limited by a lack of knowledge of its agronomy. However, it is a rich source of nutrients and other minerals. Nowadays, the use of indigenous crops has been replaced by exotic crops. Climate change is affecting agricultural productivity. South Africa is a water scarce country with uneven rainfall distribution. Therefore, studies on water stress effects on plant growth were promoted by the Water Research Commission and the University of KwaZulu-Natal to understand plant responses to water stress for commercial and subsistence farming. The objective of the study was to characterise local wild mustard cultivars morphologically and physiologically with respect to production, and for the purposes of identifying their drought tolerance. Three experiments were conducted at the University of KwaZulu-Natal in order to evaluate the responses of local wild mustard cultivars to water stress. Seeds of wild mustard cultivars were characterised according to seed coat colour. Seed quality was determined by a standard germination test. Vigour was then tested using electrolyte conductivity. Seeds were sown in seedling trays under two water regimes of 25% field capacity (FC) and 75% (FC) on pine bark growing media. The experiment was terminated at 21 days when root and shoot lengths were measured. The effect of water stress on protein content and seedling growth parameters was determined. Soil was collected from the University of KwaZulu-Natal Research Farm for a pot trial. Seeds of wild mustard were sown in 81 pots, each filled with 2 kg of soil, under three water regimes (25% FC, 50% FC and 75% FC). Pots were maintained at the corresponding field capacity level by re-weighing the pots, three times a week. Measurements of plant height and leaf number were recorded weekly. The experiment was terminated at the flowering stage. At the end of the experiment, plant growth parameters (plant height, leaf area and number, dry and fresh mass) were measured in order to evaluate the effects of water stress at the vegetative stage. A field trial was conducted at the University of KwaZulu-Natal Ukulinga Research Farm in Pietermaritzburg. The experiment was conducted during the winter and spring of 2009. A completely randomised design was used for non-irrigated and irrigated (25 mm/week) trials. Emergence was measured as well as plant height and leaf number. Plant growth parameters were also measured at the end of the experiment. Leaf samples were taken for proline determination. There was a significant interaction (p<0.05) between seed colour, landraces and days to germinate with respect to germination capacity. Isaha and Masihlalisane landraces showed higher germination percentages than Kwayimba. There was also a significant interaction (p<0.05) between landraces and seed colour with respect to electrolyte conductivity. Lighter seeds of wild mustard landraces showed higher solute leakage. Isaha and Masihlalisane had higher solute leakage than Kwayimba. Significant interactions (p<0.05) between landraces and field capacity with respect to emergence, leaf number, root and shoot length and total proteins were also observed. Isaha and Masihlalisane showed higher emergence than Kwayimba. Leaf number was reduced for all landraces under water stress. Total protein content was high in black seeded landraces under water stress. There was a significant interaction (p<0.05) between landraces and field capacity with respect to seedling fresh and dry masses. Under moderate water stress conditions, Isaha and Masihlalisane showed increased biomass accumulation. There were highly significant differences (P<0.001) in plant height, leaf area, fresh and dry mass with respect to planting date. Plants performed significantly (p<0.05) better in spring than in winter. Isaha and Masihlalisane performed significantly (p<0.05) better than Kwayimba. There was a highly significant interaction (p<0.001) between landrace and irrigation treatments with respect to proline accumulation. Under water stress, Kwayimba black seeded landrace accumulated more proline. It is concluded that light-coloured seeds of wild mustard landraces were associated with good seed quality. Masihlalisane brown seeds have good early seedling establishment. Kwayimba black seeds showed tolerance to water stress through accumulation of proteins. Isaha and Masihlalisane showed an increase in biomass accumulation under moderate water stress. Water stress tolerance in some of wild mustard landraces was negatively correlated with proline accumulation. Masihlalisane brown type can grow well, with good yields, under water stress. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2010.
5

Agronomic performance of wild mustard in an intercropping with green beans.

Phiri, Nathan. January 2005 (has links)
Wild mustard (Brassica spp.) is used as an edible wild leafy vegetable by indigenous people in South Africa. The potential of wild leafy vegetables in agriculture is not well understood, because there is generally no agronomic research on their production practices. The objective of this study was to examine the performance of three wild mustard species (herein referred to as I, K and M) over four cropping seasons in an intercropping system with green beans (Phaseolus vulgaris L. cv. Imbali). The crops were grown with and without organic fertiliser under dryland conditions at two sites (The University of KwaZulu-Natal Research Farm, Ukulinga and in a rural area of Umbumbulu, KwaZulu-Natal within the farmers' locality) during autumn, winter, spring and summer of 2004 to 2005. Plant development (leaf number, plant height and fresh biomass) during the first six weeks after sowing and seed yield were used to determine agronomic performance of each species. Nutrient status of the rhizosphere soil was determined at 42 days after sowing for each species to determine what effect growing the species would have on mineral availability. Wild mustard production significantly (P < 0.01) performed better at Ukulinga than Umbumbulu. Polyculture was beneficial for wild mustard leaf accumulation and green bean production as determined by land equivalent ratios greater than one for all species combinations, regardless of fertiliser application. Cool environmental conditions occurring in autumn and spring were more favourable (P < 0.05) for wild mustard and green bean biomass accumulation than summer and winter conditions. However, wild mustard seed yield was highest in winter compared with autumn and spring, and there was no measurable seed production in summer. Soil analysis results at 42 days after sowing showed an increase in P, K, Cu and Mg in the rhizosphere of wild mustard without organic fertiliser. Polyculture improved Zn, Cu, Mn and K in wild mustard leaf tissue. It is concluded that wild mustard can be grown as a leafy vegetable throughout the year, but it requires cool environmental conditions to enhance seed yield. Species M significantly yielded better biomass and seeds than species I and K during all the seasons. However, species K performed the least in all aspects. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2005.
6

Measuring the impact of crop production on household food security in KwaZulu-Natal using the coping strategies index (CSI)

Ngidi, Mjabuliseni Simon C. January 2007 (has links)
Crop production is widely promoted as a solution to food insecurity, but its real impact on household food security has not been measured in South Africa. Small-scale production is a common practice for many rural poor households of South Africa. While agriculture may play a major role in reducing food insecurity, agricultural growth alone cannot solve the problem of food insecurity at household level. South Africa is food secure at the national level, but available data suggest that between 58.5 and 73 percent of South African households experience food insecurity. This study set out to measure the impact of crop production on household food security among sampled households in two communal regions, Umbumbulu and Maphephetheni, of KwaZulu-Natal, to establish whether participation in food production improved household food security. Household surveys which explored the types of crops produced, food consumed, income obtained from crop sales and the food security situation, were carried out at Umbumbulu and Maphephetheni respectively (n = 200 and n = 68). The types of crops produced were investigated using crop production seasonality charts, while the household food security situation was measured using the Coping Strategy Index tool. The main findings of the study indicated that household gardens provided food for household members, but did not provide sufficient quantities to meet year-round consumption requirements. Most sampled households relied largely on purchased foods. More than 80% of the food consumed by households came from purchases, 4% and 13% came from own production in Umbumbulu and Maphephetheni respectively. Among the households surveyed, 58% and 89% were below the poverty line for Umbumbulu and Maphephetheni respectively. Umbumbulu and Maphephetheni’s largest household income contributions came from wages or salaries. Social grants were the second most important source of household income. As participation in crop production alleviated food shortages somewhat, its contribution to food security cannot be ignored. A study needs to be conducted to investigate whether participation in both farm/non farm activities reduces the number of households below the poverty line. Government should provide extension officers to monitor and evaluate the impact of gardens on household food security. To guide the design and implementation of commercial and home gardens, households need to develop clear and consistent policies, strategies, processes and procedures, and (a sound) monitoring and evaluation framework. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2007.
7

The potential role of amadumbe marketing for rural small scale farmers in Mbonambi Municipality.

Tembe, Prudence Ntombifikile. January 2008 (has links)
Involvement in agricultural activities has generally been the main livelihood strategy for rural people. This was also the case with KwaMbonambi and Sokhulu farmers, especially amadumbe producers. The research was therefore undertaken to explore the marketing opportunities for amadumbe in the Mbonambi Municipality under which KwaMbonambi and Sokhulu tribal areas fall. A research team was formed by five staff members from the Department of Agriculture including the researcher. Five research tools were used to collect data and these were questionnaires for formal retail shops, focus groups for processing centres, a transect walk to assess the land availability, sustainable livelihoods and force field analyses for amadumbe producers, From the findings, the formal retail shops and processing centres did not have a direct link with local amadumbe producers of KwaMbonambi and Sokhulu. Their produce came via agents from Durban and Johannesburg. Amadumbe producers on the other hand were producing amadumbe for their own consumption or to sell either to local communities (from the garden gate) or to hawkers in nearby towns. A recommendation was made that an amadumbe marketing forum be constituted in order to close the gap between formal retail shops, the processing centres and the amadumbe producers of KwaMbonambi and Sokhulu. Farmers felt that they could produce amadumbe of the quantity and quality required by the formal outlets if they improved their production amounts and marketing strategies. / Thesis (M.Soc.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2008.
8

Traditional agriculture and its meaning in the lives of a farming community : the case of Embo.

Maragelo, Ketshogile Pauline. January 2008 (has links)
For the majority of rural people, agricultural activities continue to be one of their main livelihood strategies. Production of food crops is not dependent on any formally acquired knowledge of farming but is solely based on indigenous agricultural knowledge passed from generation to generation through experience and careful observations. Resource-poor farmers, especially in rural areas, follow traditional farming methods to produce their food crops and these are specifically tailored to suit their environments. Embo is located in rural KwaZulu-Natal and falls under Mkhambathini municipality. The area is characterised by small-holder farmers who are mainly Ezemvelo Farmers Organisation (EFO) members. The purpose of this study was to review the farming practices followed by farmers in respect of food crop production and secondly to understand what influences the continual practice of such farming practices among rural farming communities of Embo in KwaZulu-Natal especially the EFO farmers. The study looked at what farmers see as traditional agriculture. A combination of qualitative and quantitative methods was used for the study. Data collection methods included participatory observations, semi structured face-to-face interviews and focus group discussions. The study found that farmers are happy to follow traditional farming methods to produce their food crops. Traditional farming tools such as the hoe and animal traction are the main implements used to prepare land. Household members are the main source of farm labour with men mainly responsible for ploughing activities while the bulk of planting, weeding and harvesting activities is the responsibility of women. Cropping patterns include intercropping and crop rotation with common crops being amadumbe, beans, maize and sweet potatoes. The majority of these crops are produced for both subsistence and commercial reasons. Amadumbe is an important commercial crop produced organically. Crop protection against pests is done through traditional methods where farmers mix some concoctions made from locally available resource in order to minimise losses. Kraal manure is the main soil fertility strategy followed by farmers. Landrace seeds are the main seed type used by the farmers. Local seed sources include own production and asking from other farmers. Crops with good qualities are selected in fields and maintained as seeds, which are then stored separate from those for home consumption. Harvesting is mainly done manually and for important crops such as tubers with short shelf lives, harvested through piecemeal methods. Farmers are able to generate some income from their efforts and this contributes to local economies and household food security. Farmers value their farming methods and see their farming as efficient despite challenges. There is a need to consider developing labour support groups in order to ease the burden of labour especially by women. In view of the importance of traditional farming in the lives of rural people, it is important that agricultural scientists and extension officers take into consideration the knowledge farmers already have so as to develop technologies suitable for farmers’ environments. / Thesis (M.Soc.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2008.
9

The economic feasibility of non-farm biodiesel production in KwaZulu-Natal, South Africa.

Sparks, Garreth David. January 2010 (has links)
Recent years have seen an unprecedented global increase in the production and use of biofuels. This has been driven primarily by government support for biofuel industries. Soybeans are the only field crop produced in sufficient quantities in the province of KwaZulu- Natal (KZN) that the South African (SA) industrial biofuel strategy identifies as a potential biodiesel feedstock. Thus, this study is an evaluation of the economic feasibility of producing biodiesel on farms from soybeans in the main soybean-producing regions of KZN, using batch processing biodiesel plants. A mixed integer linear programming model was developed to simulate observed agricultural land rental rates (estimated at 4.48% of the market value of land) and cropping behaviour of commercial crop farms in the study regions. The model incorporates various alternative crops, crop rotations, tillage techniques, arable land categories and variance-covariance matrices to account for risk in production. All data are on a real 2009/10 basis. The model is used to predict possible farmer investment behaviour and determine the minimum biodiesel subsidy required to stimulate soybean-based biodiesel production in the study areas. Results suggest that biodiesel production is currently not an economically viable alternative to fossil fuel, and that the incentives and commitments outlined by the current industrial biofuel strategy are inadequate to both establish and sustain a domestic biodiesel industry. Under baseline assumptions, a realistic minimum implicit subsidy of R4.37 per litre of biodiesel is required to draw soybean-based biodiesel production into the optimum solution for commercial farms. The economic feasibility of on-farm biodiesel production is highly dependent on the soybean price (i.e., the feedstock input cost) and the soybean oilcake price (i.e., the highest valued byproduct). Thus, future promotion of biodiesel ventures could primarily target a reduction of feedstock costs through the development of new technologies which increase yields of available feedstocks and/or permit the use of lower cost alternatives. Higher subsidy levels are anticipated for: (i) small-scale initiatives (particularly in the absence of a rental market for cropland); (ii) soybean-based biodiesel production in areas with less suitable growing conditions for cultivating soybeans; and (iii) using sunflower and/or canola as biodiesel feedstock. To the author’s knowledge no other previous studies have attempted to quantify the minimum level of support needed to stimulate biodiesel production in South Africa. The SA industrial biofuels strategy promotes a development-oriented strategy with feedstock produced by smallholders and processed by traditional producer-owned cooperatives. However, traditional cooperatives suffer from a myriad of institutional problems that are associated with ill-defined property rights. As such, it is argued that these initiatives will fail to attract the capital and expertise needed to process biodiesel. This research, therefore, highlights the need for South Africa’s current Cooperatives Act to be amended. Accordingly, this also infers a need to revise the proposed SA industrial biofuels strategy. It is concluded that smallholder participation in biodiesel ventures would require a rental market for cropland, co-ownership of the processing plant in a non-traditional cooperative or investor-owned firm, information and training, and a high level of government subsidy. This research advocates that government consider promoting soybean oil extrusion ventures as a means of stimulating rural development for small-scale farming initiatives rather than soybean-based biodiesel production, as they will likely require less government assistance, whilst potentially combating the food versus fuel debate against biofuels. This is compounded by the fact that South Africa has historically been a net importer of both soybean oilcake and soybean oil. Importantly, however, the proliferation of such initiatives should not be based on the current notion of traditional cooperatives. The need for government to play a proactive role in such ventures through facilitating the development of appropriate business models which stimulate private investment in feedstock and processing facilities is clearly evident. / Thesis (M.Sc.Agric.)-University of KwaZulu-Natal, Pietermaritzburg, 2010.
10

The nutritional quality of traditional and modified traditional foods in KwaZulu-Natal.

Modi, Minse. 24 August 2010 (has links)
The role of traditional foods in reducing hunger and malnutrition is not well documented in South Africa. The aim of this study was to investigate the distribution, popularity and nutritional value of traditional foods in KwaZulu-Natal through evaluation of recipes submitted for a traditional foods recipe competition. Traditional recipes are characterised by indigenous or local ingredients passed from one person to another over many generations, with little or no change in form. Modern recipes include those which use processed ingredients. Modified recipes include those which use processed ingredients. Modified recipes include a mixture of traditional and modern ingredients. The differences between the ingredients of traditional, modern and modified recipes were investigated to determine how modifying and modernising traditional foods changed their nutritional quality. Using competition entries from a traditional recipe competition from all 11 districts of KwaZulu-Natal, the nutritional value of 1200 recipes was analysed using published Food Composition Tables. The 10 most commonly submitted recipes were identified. The majority of recipes came from the more rural districts of KwaZulu-Natal. The largest number of recipes submitted were traditional (68% of entries) followed, respectively, by modified (24%) and modern (8 %) recipes. Adult females submitted more recipes than female youths, male youths and adult males. In general, modified foods had higher nutrient contents than traditional and modern foods. There was a negative correlation between food popularity and nutrient content suggesting that popular foods were not necessarily the most nutritious. It was concluded that the people of KwaZulu-Natal simultaneously use traditional, modified and modern recipes, but that there is a shift towards food modification through use of non-indigenous crops and modern ingredients. Further investigations into the relationship between food choice and the effect of modification on food quality attributes, including sensory and storage quality, are recommended. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2009.

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