Centre for Sustainable Agriculture, Rural Development and Extension

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Open Access
Agro-ecological rangeland condition assessment of extensive land-reform pastoral farming sites in the Bloemfontein magisterial area post two wet seasons preceded by drought
(University of the Free State, 2023) Mokhesengoane, Thabiso Emmanuel; Van Niekerk, J. A.; Van der Westhuizen, H. C.
The study aimed to provide holistic guidance for future sustainable livestock production in the semi-arid rangelands of the Bloemfontein magisterial area for extensive land reform livestock farmers. It aimed to compare rangeland condition per land reform farm and between land reform farms, and to establish correlations between rangeland condition, soil chemical properties and managerial inputs on sampled land reform farms. The study also aimed to use land reform livestock farmers’ decisions on livestock stocking rates to establish their production efficiency and to establish correlations between rangeland condition and soil carbon. Nine extensive land-reform livestock farms out of a total of twenty-nine land-reform farms which participated in the stocking rate study during the 2018/2019 drought were sampled using a non-probability snowball sampling procedure. A multi-methodological approach, namely, qualitative and quantitative methodologies, was employed to investigate the research topic. Structured questionnaires were used to determine profiles of rangeland managers, farm management information, and sound sustainable livestock management information, including current stocking rates on all nine sampled farms. The rangeland degradation gradient method for the semi-arid rangelands of the central Free State province region was used to determine rangelands condition scores together with the wheel point apparatus tool on two camps of each sampled farm. Soil samples were taken from each camp at the beginning of the rangeland condition assessment transect line, in the middle and end, at 20 cm depth, using the soil auger tool. The descriptive statistics, average scores, and standard deviations were calculated using analysis of variance (ANOVA), Pearson correlation, and t-tests to compare the average values. Statistical Package for Social Science (SPSS) version 28 was used to analyse quantitative data. Metabolic body weights were used to calculate large stock units. The study recorded a significant relationship (p< 0.05) between soil carbon (C) and rangeland condition, with three times more C on a good rangeland condition score of >60% when compared to a poor rangeland condition score of <20%. A strong relationship (p< 0.05) was also found between a production plan and higher average rangeland condition scores. However, no significant relationship (p> 0.05) was found between other soil chemical properties and rangeland condition, except for the positive trends recorded on soil phosphorus (P) and soil pH levels and a significant relationship between soil carbon (C) and rangeland condition. On the other hand, no relationship (p> 0.05) was found between rangeland condition scores and other variables. The highest average rangeland condition score was 77%, and the minimum average rangeland condition score recorded amongst farms was 21%. Thus, the study concludes that the implementation of science-based knowledge on both stocking rates and rangeland management for extensive land-reform livestock farmers in the Bloemfontein magisterial area is paramount and valuable for climate change impacts mitigation and sustainable livestock productivity. Furthermore, the study recommends investigating carbon market participation as an incentive for farmers to implement sustainable ecological practices and the practicality of incorporating variable stocking rates into extensive livestock management systems.
Open Access
Analysing urban household food security in the Cape Town Metropole of South Africa, with reference to the role of urban agriculture
(University of the Free State, 2017-08) Swanepoel, Jan Willem; Van Niekerk, J. A.; Van Rooyen, C. J.; D’Haese, L.
English: Exceptional rural-urban migration took place into the Cape Town Metropolitan area over the past years and is continuing, with the bulk of these migrants residing in the informal settlement areas. The rate of urbanisation is however not concurrent with the rate of economic growth and as a result, the rates of urban poverty is worsening. Food insecurity is a direct result of urban poverty, causing urban populations to depend on urban food production. Currently, measurements for food security are inconsistent and it is unclear whether urban agriculture systems are sustainable and whether it contributes to the general household food security, albeit it is generally accepted that households engaged in urban agriculture should experience an improved food security status. Empirical research regarding the actual contribution of urban agriculture to household food security may be limited as well as lacking in consistency. Against this setting, it was important to analyse urban household food security in the informal settlement areas of the Cape Town Metropole in South Africa, with focus on the contribution of urban agriculture towards alleviating food insecurity. The objectives to determine the required outcomes were: • The measurement of the level of urban household food security of urban farmers and non-farmers; • Factors that affect urban household food insecurity were identified; • The contribution of urban agriculture to food security was determined; • An optimal grouping of observations by utilising the identified critical factors that address household food insecurity were identified; and • Policy recommendations were made for government on the alleviation of urban food security by using the outcomes of the above analysis. The above objectives were achieved by firstly consulting literature to anchor the application into theory and report on past research conducted on the problem. The global and South African trends of food security and urban agriculture were placed in perspective together with the measuring of livelihood in an urban context. Data collection took place in six informal settlement areas of the Cape Town Metropole, included both farming households and non-farming households. Very high levels of food insecurity were observed in all dimensions of food security in the informal settlement areas of the Cape Town Metropole. When looking at access to food, the household food insecurity access scale (HFIAS) indicated that 78% of households are severely food insecure and just more than 50% reported an income level above the US$ 2 per capita per day. Households reported hunger especially during June and July, and November and December respectively. This is an indication of food unavailability during these months. Significant differences were observed between the areas in terms of the level of food security, but no significant difference in food security between farming and non-farming households was observed. The households surveyed consisted of 99 male headed and 121 female-headed households with more males involved in urban agriculture. The average household comprised of 4.3 members. The factor analysis showed that the expenditure component accounts for 20.4% of variance and is characterised by factors relating to expenditure on food. The expenditure component is comprised by the share of food expenditure on income, the total value of food consumed and the household diet diversity score. The groups of food purchased (diversity) are dependent on the amount of purchase power available. Other components identified were the socio-economic indicators component, food security indicators component, urban farming component and geographical and market components. The results presented in the study indicated that households engaged in urban agriculture are benefiting in terms of diet diversity, income and accessibility due to their involvement in this activity. However, there was no indication of a significant positive contribution of urban agriculture towards food security. Three homogeneous clusters were characterised into a severely food insecure cluster, a moderately food insecure cluster and food secure cluster. Different food security measurement indicators, demographic indicators, livelihood indicators relating to income, production factors and the level of education were included in the analysis. These clusters of homogenous groups with similar proportions for different characteristics may in turn serve as invaluable information for decision makers to identify destitute areas, make focused decisions and take specific supporting action. Policy recommendations were made to enhance the effectivity of the current policy and contribute to the main goal of the National Food and Nutrition Security Policy i.e. to ensure that all the dimensions of food security are met. This include the availability, accessibility and affordability of safe and nutritional food at national and household levels.
Open Access
Assessing socio-economic factors influencing adoption of legume-based multiple cropping systems among smallholder sorghum farmers in Soroti, Uganda
(South African Society for Agricultural Extension, 2016) Ekepu, D.; Tirivanhu, P.
Despite the numerous benefits of legume-based multiple cropping systems in soil fertility management, most smallholder sorghum farmers have not adopted them. The aim of this study was to examine socio-economic factors influencing adoption of legume-based multiple cropping systems among smallholder sorghum farmers in Soroti, Uganda. A survey questionnaire was administered to a randomly selected sample of 120 respondents. Logistic regression analysis was performed to ascertain socio-economic factors influencing adoption of legume-based multiple cropping systems. Focus group discussions were also conducted to triangulate the findings. Results showed that 51.7% of the respondents had adopted sorghum-legume rotations compared to only 8.3% who adopted sorghum-legume intercropping. Number of extension contacts had a positively significant (p<0.05) effect on adoption of sorghum-legume rotations whereas family size had a negatively significant (p<0.05) effect on adoption of sorghum-legume intercropping. From focus group discussions, market access to legume crops also emerged as a barrier to adoption of legume-based multiple cropping systems. The study recommends strengthening legume value chains; improving extension service delivery and conducting a cost-benefit analysis of adopting legume-based multiple cropping systems. The implication to extension service delivery is that extension agents should focus their technology dissemination messages on technologies that are accepted and feasible in their farming communities.
Open Access
Challenges facing communal farmers to improve cattle production and marketing systems in Namibia: case study from Omaheke region
(University of the Free State, 2011-01) Hangara, Gabriel Ngungaa; Groenewald, Izak B.; Teweldemedhin, Mogos Y.; Conroy, Andrew B.
The objective of the study was to examine the efficiency and constraints of cattle managerial practices and marketing systems in the four communal areas of the Omaheke region. The specific objectives of the study were to identify the most crucial managerial aspects having a negative effect on sustainable cattle production; to examine the sustainability of cattle supply chain management from farmer to processor; to examine the accessibility of market information to farmers and to identify the factors influencing the supply of cattle to market. The study was conducted in four communal areas, namely Aminius, Epukiro, Otjinene and Otjombinde of the Omaheke region in Namibia during 2008 and 2009. Questionnaires were developed and administered to 670 communal farmers and key informants of 3 farmers' associations, 4 farmers' co-operatives, a cattle auctioneer and beef processor. Data from questionnaires were entered into MS Excel spreadsheet and descriptive results analysis was done using Statistical Package for Social Sciences (SPSS). In terms of examining the factors influencing the supply of cattle to market, Weighted Least Square (WLS) was used. The main constraints identified in the production system were incorrect bull:cow ratio (1 :38), low calving percentage and cattle mortalities and losses. The main causes of cattle mortalities and losses in the communal areas are drought, diseases, straying and theft, with a farmer losing an average of ten cattle per year. The managerial practices found to negate sustainable cattle production are weaning practices and record keeping. Communal cattle farmers are not utilising the available agricultural support services and constraints identified in the production system and shortcomings found in the managerial practices could be addresed if farmers visited the extension and veterinary offices for advice. In terms of marketing, the farmers were found to not be satisfied with the existing market and satisfaction levels of farmers differed significantly (p<0.05). The majority of farmers do not know the quality criteria used by buyers when determining prices for cattle classes and grades (p<0.05). The accessibility to market information was found not to be a constraint. The constraints facing the communal cattle farmers include low prices offered for cattle, buyers' late arrival or no show, slow payment process and buyers running out of cash, whereas those found to be facing auctioneers and buyers operating in communal areas include buying of poor quality cattle, and few number of cattle offer for sale. The lack of essential and safe facilities at market outlets was expressed as a constraint to cattle farmers, auctioneers and buyers in the study areas. The factors found to have an influence (p
Open Access
Components of an Integrated Pest Management (IPM) program for the control of the sheep blowfly Lucilia cuprina under South African conditions
(University of the Free State, 2010-05) Scholtz, Anna Jacoba; Cloete, Schalk W. P.; Van Wyk, Japie B.; Van der Linde, Theuns C.
English: The study includes separate papers, which are all linked by their emphasis on the control of blowfly strike, and breech strike in particular. This summary is intended to provide readers with a broad overview of the outcomes of the study. Part I. Management options Chapter 3 dealt with a survey on the prevalence of blowfly strike, and the methods used to combat blowfly strike, in the Rûens area of South Africa. It was clear from the survey that breech strike is the major form of strike in the Western Cape. Mulesing was once again demonstrated to be an effective control method for breech strike. With the termination of mulesing as an acceptable management practice, this chapter highlights the need for alternative methods to be used for blowfly control. Although useful from an IPM perspective, other initiatives that could add to blowfly control failed to have the same marked impact on blowfly strike that mulesing had. Chapter 4 reports on the effect of regular treatment with crystals derived from Aloe spp for potential use as a natural anthelmintic in yearling Merino progeny. The short-term effect of aloe treatment was also considered. Results showed no reduction in the parasite burden when sheep were treated with Aloe. The contribution of this treatment to blowfly IPM is thus limited. Part II. Breeding options Divergent selection for reproduction (defined as the ability of ewes to rear multiple offspring) resulted in lines that differed markedly for their susceptibility to breech strike as a correlated effect (Chapter 5). The line selected for reproduction (High line or H line) was substantially more resistant to breech strike than the line selected for low reproduction (Low line or L line). Chapter 6 reported genetic (co)variances between wrinkle scores and the absence of breech strike in mulesed and unmulesed Merinos. This chapter suggested that breech strike on the underlying scale is partly under genetic control. Indirect selection levelled against skin wrinkle could play a role in reducing the susceptibility of sheep to breech strike in unmulesed sheep only. The significant genetic variation for absence of breech strike remaining in mulesed sheep hints at traits not associated with wrinkles and bare breeches (which are arguably being strived for during the Mules operation) also being important in breech strike resistance genetics. In Chapter 7 subjective scores for dags, breech cover, crutch cover and belly quality were recorded for mature and maiden ewes in the divergently selected lines in an attempt to understand the reasons for the lower susceptibility to breech strike in the H line. Animals in this line displayed desirable breech and crutch characteristics compared to contemporaries selected against reproduction (L line). This generalisation held true for mature reproducing ewes as well as for two-tooth hoggets. Dag scores were accordingly improved in hoggets in the H line. In a further study (Chapter 8) it was shown that autumn and spring dag scores; breech wrinkle score as well as the vertical and horizontal breech bare areas were all heritable in the lines divergently selected for reproduction. Genetic correlations among the breech traits were generally favourable. Yearling live weight was favourably related to breech traits on the genetic level. The only genetic correlation of breech traits with fleece traits that would cause concern was a positive correlation between clean fleece weight and breech wrinkle score. Derived breeding values in this chapter confirmed substantial genetic differences for both dag scores, breech wrinkle score and breech bare area in favour of the H line. Results from Chapter 9 indicated that H line hoggets took substantially shorter time to be crutched than their L line contemporaries, indicating welfare benefits in favour of the former line. Implications The study has shown definite opportunities for the alleviation of breech strike and presents the scientific community with ample opportunities to refine and integrate existing control measures in a comprehensive IPM strategy. However, further research is needed to reach this objective.
Open Access
Creating a model to develop self-sustainable aquaculture agribusiness enterprises in South Africa
(University of the Free State, 2023) Brown-Webb, Bernadette; Nesamvuni, A. E.; van Niekerk, J. A.
South Africa’s policies emphasize the importance of small enterprise and aquaculture sector development in meeting development goals. Public and private investments do not have the expected impacts on enterprise development and job creation, and enterprise sustainability remains low. Many start-ups receiving support, including public funding, fail to become self-sustainable after the financial support ends. This study hypothesized that the development of self-sustainable aquaculture enterprises is not adequately supported by the enabling environment for the sector. The research objectives were to (1) determine the impacts of key stakeholders on enterprise development; (2) identify critical success factors for enterprises; (3) understand the impacts of the COVID-19 pandemic on the sector; (4) understand the challenges that compromise development of self-sustainable enterprises; and (5) develop and validate an enterprise development model to create self-sustainable aquaculture enterprises. The study was conducted in Saldanha Bay, in the Western Cape Province on South Africa’s west coast. A multiple-case study approach was followed, focusing on the marine bivalve shellfish farming industry. Semi-structured interviews were conducted with the owners or managers of ten aquaculture enterprises in Saldanha Bay, and with nine representatives of key role players in the sector. Consultations with enterprise development experts and stakeholder focus groups were also conducted. The mussel farming sector has a well-developed commercial value chain. Vertical integration is prominent, and 32% of farms have access to 51% of the farming area. Self-sustainable enterprises had minimum farm sizes of 15 ha, produced for at least 5 years, had a commercial focus and strong leadership. In-depth analysis of four case studies indicated success factors as having commercial focus, good management and leadership, access to finance, economies of scale, and perseverance. Key aquaculture stakeholders had positive and negative impacts on aquaculture sector development. Role players listed the main impacts as the approach to enterprise development (56%), community-based/co-operative ventures (67%) and impacts of different mandates (44%). Enterprise respondents listed community-based/co-operative ventures (50%), impacts of different mandates (40%) and the enabling environment (60%). Recommendations include resourcing of aquaculture industry associations, developing a focused aquaculture enterprise and supplier development (ESD) strategy and programme, streamlining application processes, and finalising the Oceans Economy Master Plan, to include aquaculture specific legislation. Both enterprise and role player respondent groups described critical success factors as environmentally sustainable farming (80% and 78%), addressing economic challenges/opportunities (90% and 89%) and good business leadership and management (100% each). Recommendations include a focused aquaculture development programme such as an incubator, a market development mechanism and an integrated research and development programme. Enterprise respondents listed the main areas of COVID-19 impacts on operations and production (100%), requirements to survive and rebuild (89%), factors promoting resilience (78%) and initiatives to prepare and rebuild (67%). Role player respondents listed impacts on the sector (100%), requirements to survive (89%), factors promoting resilience (78%) and support measures (67%). Recommendations include interventions to rebuild a more resilient sector, follow-up assessments, prioritising interventions for surviving enterprises, and developing an industry-based Business Continuity Strategy. The key factors affecting mussel production were a supportive regulatory framework, favourable environmental and economic conditions, appropriate species and technologies, and efficient farm and enterprise management. Challenges affecting these factors were identified and used to develop an aquaculture enterprise development model (AEDM) that could develop self-sustainable enterprises. The AEDM includes a vision for the sector, a mechanism for implementation, an aquaculture incubator, an integrated research and development programme, and a market development mechanism. The study recommends the implementation of a pilot AEDM in the Saldanha Bay Aquaculture Development Zone (ADZ). This will allow for testing of assumptions and refining of the model before rolling it out to other ADZs or industries.
Open Access
Development of a systems model facilitating action research with resource-poor farmers for sustainable management of natural resources
(University of the Free State, 2006-11) Smith, Hendrik Johannes; Walker, Sue; Stroebel, Aldo; Verschoor, Aart-Jan
English: The focus of this research is a localised action research framework, or more specifically, the development of action-research theories based on experiences in a South African Landcare project. The Bergville Landcare project, implemented from 2000 to 2005, was aimed at developing conservation agriculture (CA) practices in a community of resource-poor farmers. These attempts culminated in the development of a soft-system platform on which participatory action research methodologies and techniques could be based in order to facilitate adult and action learning. The following six strategies were identified for the development of such a platform: awareness, local institution building, training-of-trainers, farmer-to-farmer extension, onfarm experimentation and partnerships. The main action-research methodology used to manage these strategies is monitoring and evaluation (M&E). The approach selected for this research is one in which multiple methodologies are deemed the most appropriate for developing theories within the paradigm of constructivism and interactive agricultural science, i.e. a combination of grounded theory, action research and soft-systems methodology (SSM). The design of the research process resulted in effectively using and analysing the different data sources within the following four phases: a) theory as an initial guide to design and data collection; b) application of initial theories in a Landcare project; c) theory as part of an iterative process of data collection and analysis; and d) gaining theoretical and practical insights into the focal research problems. A number of theories relating to action research were seen as critical in the formulation of the process which was applied in the Bergville project. Action research, experiential learning and action learning formed the foundation of the action research approach which was conducted with resource-poor farmers in the Bergville project. In a practical sense, action research was seen as the “umbrella methodology”, applied in harmony with other methodologies, such as SSM, the Farming Systems Approach (FSA), Farmer Participatory Research (FPR), Farmer Field School (FFS) and M&E. The “action research process” applied in the Bergville project was used as the so called ‘Acting’ phase, and was the primary data-source for the research process. The various documents and data used, i.e. project reports, a personal research diary, significant changes and M&E findings, are described comprehensively. A convergent interviewing process was used to obtain an indication of how sustainable the activities and results of the project were. The multi-methodological data analysis and theory development process proved to be successful in establishing local theories for practical application. Cognitive maps were used in combination with a general SSM framework to stimulate data analyses, reflection, learning and ultimately theorising. Three cognitive maps were developed in which local theories for on-farm experimentation, training-of-trainers, farmer-to-farmer extension, local institutionalisation and M&E are explicated. Since the cognitive map is a structuring (conceptualisation) of a complex situation, they were discussed in detail in an attempt to improve their understanding. The most suitable approach for a synthesis of the theorising results appeared to be the integration of the results into an improved theoretical framework addressing the main research questions of this study. This improved framework proved to be that of a systems model which included the major phases of the action-research cycle, and this was used to describe the proposed methodologies and techniques. The proposed six phases of this model are: a) Stakeholder analysis, b) Diagnosis (Situation analysis), c) Planning strategically, d) Implementing and managing, e) Learning and adapting, and f) Exit strategy. This model provides a means of creating a culture of learning that would allow people to be innovative and interactive in the management of natural resources and to collectively care for and manage these resources in a sustainable manner.
Open Access
Development of a toolkit for sustainable revitalization of smallholder irrigation schemes: Free State Province
(University of the Free State, 2023) Grobler, Hendrik Frederik; van Niekerk, Johan; Botha, Cobus
The “complex of activities” involved in smallholder irrigation schemes has led to the collapse of three such schemes in the Free State Province. This has happened over the past two decades, although best management practise guidelines for the sustainable revitalization of smallholder irrigation schemes were available to farmers, researchers, and policymakers. The problem is that farmers are not in control of the revitalization process, meaning they are not in control of their own destiny. The objective of this study was to find out why best management practice is not followed and then to provide a toolkit to allow smallholders to take charge of their destiny. Thereby ensuring an equal base between developers and the “to be developed”. Applied research tools found that smallholder irrigation farmers in the Free State Province possess a crop farming culture. The study was conducted in three smallholder irrigation schemes (Sediba, Woodbride, and Feloana) in the Thaba Nchu area of the Free State province. The research methodology was a mixed-methods design. The primary research methodology applied is evaluation research. Three different types of evaluation research are described as implementation (process) evaluation, experimental and quasi-experimental and qualitative (naturalistic) research methods. Qualitative methods include empowerment evaluation methods. This study opted for the latter. Qualitative evaluation research methods were used to describe and evaluate the performance of programmes in their natural setting and focus on the process rather than the outcome. This study assessed the current process of revitalising smallholder irrigation schemes. Empowerment Evaluation (EE) uses evaluation concepts and techniques to foster improvement and self-determination. Stuart Theobold wrote that decolonising science is not that far reached. He believes shifting to decolonising science is a paradigm. This aligns with this study's paradigm; indigenous knowledge needs to be valued. This study listened to the African farmer himself. Both the qualitative and empowerment evaluation approaches are used. The best attributes of these two approaches were explored to compile a system whereby best practice in the revitalization of smallholder irrigation is enhanced. Government and Non-Government Organisations (NGOs) are believed to overshadow the smallholder farmer as an individual, but more so as an organised commodity group. Four data collection instruments were used; these included open-ended questionnaires with industry leaders (tribal authorities, academics, government officials, policymakers, sponsors, and NGOs) and farmers, observations (walk crop fields and satellite images) and reviewing of the knowledge base (programmes, policies and guidelines). Statistical results of this study indicate a strong correlation between knowledge and productivity as perceived by participants. This perceived view of farmers was strengthened by previous experiences through fifteen years of research on In-field Rainwater Harvesting (IRWH) amongst the same communities. The literature review also indicated that a standardised best management practice is currently unavailable. This research study demonstrated that related professions could standardise best management practice guidelines through voluntary consensus processes. Together with a strong mandate provided by the government to establish smallholder farmers, the proposed toolkit will create a better chance for smallholder irrigation schemes to be sustainable. A standardised best management practice toolkit will assist researchers, practitioners, policy makers, farmers, and communities in increasing productivity on smallholder irrigation schemes in the Free State Province. The following recommendations are proposed through this research study: • The knowledge base of smallholder irrigation farmers needs to be strengthened. This can be achieved through a combination of provision of a complete toolkit and training on the value and use of such a toolkit. It will result in a marked improvement in productivity on the smallholder irrigation schemes. • Smallholder irrigation farmers in the Free State Province must organise themselves into a commodity group. This initiative must be spontaneous but can be supported by government. It will result in farmers owning the process of revitalization. • RESIS should be considered a once-off event. It will align all available resources towards a focused intervention within an agreed time frame. It will increase urgency amongst all role players in the revitalization process. • Revitalization of smallholder irrigation schemes needs to be removed from infrastructure-based professionals to developmental-orientated professions and agencies. Identified gaps in the body of knowledge (BOK) directed much attention towards soft issues. In most cases infrastructure was delivered within industry norms, meaning that infrastructure -based professionals will augment the developmental effort lead by professionals in the developmental-orientated professions. • The industry needs to develop a complete Best Management Practice Guideline in the form of a Toolkit. The industry includes government, NGOs, sponsors, researchers, practitioners, farmers, and a proposed commodity group representing RESIS farmers in the Free State Province and even farmers in all nine provinces in South Africa. The approach used by the international project management profession is proposed as a framework for a complete toolkit for revitalization. • Compiling such a Best Management Practice guideline, or toolkit, requires a purposefully planned and “voluntary consensus” process. Existing organisations such as ICID, SAII, WRC, ARC or a relevant government department can facilitate and administer such an industry-based process. • An existing BOK is proposed as an example for compiling a framework for best management practices or toolkits. • The knowledge base and crop production methods of IRWH and RESIS be shared and integrated. • Further research be conducted to investigate the impact of leadership quality on the decision-making powers of smallholder irrigation schemes.
Open Access
Development of a water management decision model for Limpopo Province, South Africa
(University of the Free State, 2012-07) Tshikolomo, Khathutshelo Alfred; Nesamvuni, A. E.; Walker, S.; Stroebel, A.
The study was conducted in the Limpopo Province with a focus on the Limpopo and Luvuvhu- Letaba Water Management Areas. The main issues investigated were (1) water resources, mainly runoff and storage capacity of the target Water Management Areas and municipalities, and the water gain and loss of the Middle Letaba Dam, (2) water management issues, mainly perceptions of municipal water managers on the water resource and its uses, and their perceptions on stakeholder participation, and (3) household water supply and requirement. A water management decision model was proposed based on the results of the investigations. The results of the investigations revealed that: (1) The Limpopo WMA has a MAR of 611.4 million m3 for possible development of new dams compared to only 365.2 million m3 for the Luvuvhu-Letaba WMA, and related results were recorded for municipalities in these WMAs. The storage volumes of the Middle Letaba Dam were very small compared to design capacity; (2) The municipal water managers lacked knowledge on water resources and were relatively more knowledgeable on water use. Water management decisions were made by government based stakeholders while community based stakeholders had little influence on water management decisions; (3) There was a lack of access to safe water sources, only half (50.1%) of households obtained water from street taps. The quantity of water fetched ranged from 25 to more than 200 litres per household per day and the amount fetched was more for households located near the water sources. As a result of scarcity, water was mostly used for basic activities such as drinking, preparing food and bathing. Half (51. 7%) of the households fetched less water than the 25 litres per capita per day supply standard which itself did not meet the average requirement of 37.5 litres per capita per day; and (4) A water management decision model was proposed based on the framework of the Congruence Model. The proposed model stated the main challenges faced by the water sector in the study area and assessed the capacity of the service organisations to address them by analysing the congruence between the challenges and the capacity. All assessed water service organisations only had moderate capacity to address the challenges. The lack of filling of some posts was the most significant constraint to the effectiveness of the organisations. It is therefore recommended that: (1) The Limpopo WMA be the focus for possible construction of new dams, especially the Mogalakwena, Lephalale and Mokoio catchments in the WMA as they showed to have more available mean annual runoff for possible development of new dams. Although the Luvuvhu-Letaba WMA was shown to be well developed in terms of storage dams, the Mutale Catchment had more available mean annual runoff for possible development of new dams. Regular investigations of runoff and dam storage capacity should be conducted as the current status will change due to changing rainfall patterns and dam siltation. Water should be transferred to the Middle Letaba Dam from other catchments in order to maintain this dam at a full level and consequently to improve the supply of the resource to planned areas; (2). Municipal water managers should be trained on water resources and to a lesser extent on resource uses for them to make relevant decisions on the management and use of the resource. Community based stakeholders should be involved in water management decisions and should be capacitated to be reliable sources of water information; (3) The Department of Water Affairs should reconsider the 25 litres per capita per day as a supply standard as it does not suffice for the average requirement of 37.5 litres per capita per day proposed in this study. (4) Guided by the proposed water management decision model, service organisations should improve their capacity to address water sector problems.
Open Access
Development of an agricultural food enterprise model in rural towns in Vhembe district, Limpopo province, South Africa
(University of the Free State, 2023) Mahopo, Tjale Cloupas; Nesamvuni, C. N.; Van Niekerk, J. V.; Nesamvuni, A. E.
Introduction: The street food enterprise underwrites food security by bringing food to local communities. It is a growing source of employment and income for economically challenged households. Yet, it continues to face challenges such as lack of support from various stakeholders. This study aimed to develop an agricultural food enterprise model of competitiveness for the street food enterprise in rural towns in the Vhembe District of the Limpopo Province in South Africa. Methods: A cross-sectional study design and mixed methods approach were used. Five hundred and eleven (511) street vendors of ready-to-eat foods participated in the study. Convenient sampling was done in three rural Vhembe District towns. Quantitatively, a structured questionnaire was used to measure their socio-economic and operational characteristics, and the dietary diversity of the foods sold. A convenient sampling was further used to sample 55 participants for a qualitative study. A six-step value chain analysis and Porter's Diamond Model of Competitiveness components were used as a guiding framework. In-depth interviews were used to explore the perceived challenges and proposed solutions. Descriptive statistical analysis, thematic qualitative analysis, and value chain analysis using components of Porter's Diamond Model were applied across the study. A SWOT analysis was performed in the final step to diagnose the value chain's details and inform the development of the street food model. Results: The vendors were mainly South African women aged 35-54 years who were primarily motivated into the enterprise by unemployment and financial challenges. Their businesses contributed about 82% of their household income. The foods they sold had poor diversity, with 70% comprising fewer than five food groups and starchy staples, a common food group. The value chain is short with poor infrastructure. It includes purchasing, storage, transportation, production, and consumption. The main actors involved are input suppliers (formal and informal traders), transporters, local authorities, and customers. The vendors perceived four main factor conditions of Production, Chance condition (new inventions and technologies, shifts in the financial market, decisions of foreign governments, and wars), Role of government, and Related and supporting industries as the conditions inhibiting the competitiveness of the street food enterprise. Poor government support, the cost of water, and costly finance were critical subcomponents. Thus, the result of the study informs a Diamond Model of Competitiveness with a partially different structure from that of Porter's Diamond Model. The results suggest that the factor conditions that explain the competitiveness of an informal survivalist enterprise like street food vending are prioritised differently than when used to explain the competitiveness of a formal organisation. Recommendations: Government needs to adopt a collaborative approach to the transformation of street vendors, while protecting them from the impact of factors that inhibit their competitive performance. Key strategies include access to water, short-term finance solutions, improved infrastructure, and provision of relevant training.
Open Access
Establishing effective communication between the Agricultural researcher and the farmer with special Reference to the large-scale sugarcane, soybeans and maize industry - a comparative case study in South Africa
(University of the Free State, 2023) Bruwer, Pieter Willem; van Niekerk, J. A.; Swanepoel, J. W.; Flett, B.
Sustainable global food production is non-negotiable and can only be achieved by applying sustainable agricultural practices to ensure the longevity of our natural resources, such as soil and water. Research and subsequent dissemination of the results form the basis of agricultural development in the small-scale and large-scale commercial farming sectors. Nature, climate, industry, and agriculture are all integrated systems of our world. It is a complex and dynamic system that has required innovative thinking for the survival and progress of humankind since its inception. The delivery of scientific and technological information has always been crucial for developing sustainable systems, and delivery methods must continuously be evaluated to ensure effective communication and knowledge transfer. Communication breakdown between the researcher and the producer or target audience could have disastrous consequences. This study aimed to investigate the environment in which the agricultural transfer of knowledge takes place, focusing on South Africa's crop production sector. It also intended to research current methods and models used for disseminating information, identify the key role-players, determine levels of communication between stakeholders and recognise the shortcomings and qualities of such models. It is therefore important to investigate and evaluate current, modern approaches and older models of knowledge transfer in an attempt to provide guidelines along which the delivery of scientific information can be developed. The entire world faces a situation of information overload in most sectors of industry and social environments. Filtering through this enormous amount of information is an almost impossible task and requires the guidance and expertise of scientists and specialists within a specific field of knowledge. The alternative scenario is where borders between credible, factually based knowledge and “fake science” become blurred, creating confusion and distrust. The participants' perceptions of research, communication, effectivity of knowledge transfer, and relevancy of current methods must be explored to redirect or redesign models, and means of scientific information delivery. This comparative study used a mixed methods approach where the perceptions regarding information dissemination from researchers, advisors and research coordinators in the crop production sector, and researchers, advisors and knowledge management in the sugarcane production sector were obtained using questionnaires complimented by semi-structured in-depth interviews. Descriptive and inferential statistics were applied to analyse and discuss the generated data. The crop researchers, advisors and research coordinators confirmed unsatisfactory levels of communication throughout the research process and subsequent dissemination of the results. Pseudo-science was a serious concern for all the role-players in this sector. The same participants felt that research funding and the source of funding was a potential problem that could even influence the results generated. The SASRI model, however, was found to be very effective throughout the process of identifying research topics, prioritising projects, funding, and disseminating results. Communication between researchers, extension specialists and sugarcane growers was effective and well-coordinated by knowledge management. The existince of well-established communication channels and feedback ensured the sugarcane production sector’s awareness of fake science but confidence that most of the scientific data generated reached the intended target and therefor regarded pseudo-science as a minor problem. It was further found that although the crop commodity organisations performed well in research, they needed closer collaboration with advisors in the crop production sector to ensure effective dissemination of the generated research results. It was concluded that the South African Sugarcane Research Institute employed a highly respected and effective model of knowledge transfer and dissemination of results to the target audience. Acceptable levels and channels of communication enabled all the stakeholders in the dissemination chain to network, even on an interdisciplinary level. Well-structured measures of effectivity, such as feedback and adoption rates on the farm-level, create confidence and trust within the SASRI system and contribute most to sustainable production and utilisation of natural resources.
Open Access
Evaluating the impact of government support programme on the development of land reform farms in South Africa
(University of the Free State, 2023) Mphahlele, Ramakgodu Benjamin; Qwabe, Q. N.; Swanepoel, J. W.
Concerns have been raised in various studies regarding the unproductive use of agricultural land acquired through land reform programme. Given the vital role of agriculture in creating jobs and ensuring food security, it is essential to make concerted efforts to promote the development of land reform farms for commercial purposes. This study aims to evaluate the initiatives undertaken by various stakeholders to facilitate the commercial use of land reform farms and contribute empirical evidence to shape support programs. The study is guided by the development theory, which emphasises the importance of considering the actors and structural powers in the development process, as their influence plays a pivotal role in the relevance of policies. The researcher sought to demonstrate how the development theory has informed the existing policies related to the development of land reform farms. To gather comprehensive data, a mixed-method approach was employed, allowing for the triangulation of findings from various sources. Quantitative data was collected from 122 participants using survey questionnaires, while qualitative insights were obtained through three focus group discussions with farmers and four open-ended discussions with commodity organizations. For data analysis, Microsoft Software Package (Version 2020) was utilised, and a Pearson Correlation Coefficient approach was applied to examine the nature, strength, and direction of the key variables being measured. Additionally, a correlation coefficient was used to assess the frequency and direction of interactions between these variables. The study indicates that most farmers gained income from farming due to land access and support. Partnership effectiveness was insufficient for enhancing most farmers' skill sets. Although Land Development Support (LDS) fulfilled most of farmers' desires for commercial farming, farm sustainability might suffer due to insufficient entrepreneurial aptitude. Additionally, comprehensive stakeholder consultation in policy development could enhance policy relevance for addressing potential challenges in farm sustainability. Land size and its utilisation (r= -0.2700); Funding sufficiency for farm production (r=0.1775); Income derived after LDS ( r=0.5212); Aspirations of farmers (r=0.0757); Partnership arrangement and sustainability of production (r=0.0044) emphasises the importance of remodelling the partnership arrangement to cub its current challenges. In conclusion these findings underline the need for a more streamlined approach that involves the active participation of relevant stakeholders, a well-defined funding model, and the selection and capacity building of farmers involved in developing land reform farms. This holistic approach is essential to address the challenges associated with unproductive land use and to foster the successful development of land reform farms for commercial purposes, thereby contributing to enhanced food security and job creation.
Open Access
A foundation in agricultural extension science is a prerequisite for agricultural advisors to improve the livelihood of the beneficiaries of their extension and advisory support services in the Western Cape
(University of the Free State, 2022) Levendal, Carol; Swanepoel, J. W.; Van Niekerk, J. A.; Zwane, E. M.
Agricultural extension is pivotal to transforming the agricultural sector, outlined in many strategic and policy frameworks for South Africa. Therefore, it was necessary to determine what sets apart agricultural advisors who, under the same conditions, have a positive effect on farmers' agricultural output from those who do not. The researcher argues that a foundation in agricultural Extension Science enables the former to improve farmers' livelihoods. Such a study requires comparing agricultural advisors with an Extension Science foundation to an agricultural advisor with no such foundation. Data triangulation methodology was employed. Four data sources were used to determine if there is a difference in the extension and advisory services they provide to farmers in the Western Cape. One data source was measuring the advisor's performance in the field. A performance rating tool was developed to measure how agricultural advisors execute their roles and responsibilities. Hence, criteria for such a tool were necessary. This was developed through reviewing the literature. The agricultural advisors tested these identified roles and responsibilities, and they agreed with them. Through the Log Frame Analysis, managers and specialists from Program 3 in the Western Cape Department of Agriculture examined 11 roles and responsibilities using problem and objective analysis methods. Another data source was the demographics of the agricultural advisor determined through a questionnaire. Two other data sources were the success rate of the farms and the farmers' rating of the advice given by the agricultural advisor taken from the Western Cape Agricultural Land Reform Project Performance Evaluation 2014-2019. The success profiles of the extension advisors were compared to determine if a foundation in Extension Science would improve the farmers' livelihood.
Open Access
The impact of empowering women farmers towards sustainable agriculture in the Gauteng province of South Africa
(University of the Free State, 2022) Thobejane, Mamatime Kholofelo; Swanepoel, J. W.; Van Niekerk, J. A.
Despite the South African Constitution emphasising values and gender equality; most women continue to face barriers and commercial restrictions that limit their participation in the mainstream economy. As a result, methods must be devised by the sector to determine whether the policies and strategies they invested in for gender mainstreaming, which were intended to build more equitable, empowering, sustainable and inclusive societies, are effective and producing the desired results. Due to a lack of gender-disaggregated data, women's roles in agriculture and, thus, their opportunities and constraints need to be better understood. This study aimed to quantify the impact of women's empowerment on sustainable agriculture. Even though the Department of Agriculture has been implementing the women empowerment project since 1999, the literature findings show that the impact of agriculture on empowering women in the sector cannot be quantified. The sector's eligibility to request assistance is gender neutral. Descriptive research methodology was used for this study, and quantitative data were collected in the MS Excel package and statistically analysed using the Women's Empowerment in Agriculture Index (WEAI) and Agricultural Integrated Survey (AGRIS). Additionally, the study applied a Logical Framework Analysis (LFA) for problem analysis and translating the causes and effects of the problems that women farmers face into objectives and future strategies. Respondents were farmers who share a common domain category of being classified as commercial farmers. Only those farmers who were classified as commercial farmers who qualified for the Gauteng Department of Agriculture and Rural Development (GDARD's) commercialisation programme and benefited from the Department of Agriculture, Forestry and Fisheries Female Entrepreneur Awards (DAFF FEA) programme were eligible to participate in the study. Except for the time domain, access to, and decisions about credit indicators, this study found that sufficiency in the production, leadership, assets, income, and time usage categories was more closely associated with empowerment than demographic variables. Within this study, 91% of women and 81% of men reported feeling empowered. The domain in the sample that contributes the most to women's disempowerment, according to the deconstruction of the disempowerment measure, is time. The areas of empowerment that contribute the most to male disempowerment are time (workload) and resources (access to and credit decisions). Under the sub-indicators biodiversity, profitability, and resilience, female and male participants in Gauteng are unsustainable on the environmental and economic dimensions. Furthermore, the study's findings evaluated the practitioners' willingness to examine and discuss gender issues. The findings revealed that 44% of practitioners have a high willingness to explore gender issues and 86% of practitioners were unable to discuss gender issues. This study also proposed developing a gender policy as a starting point to direct the sector to incorporate the gender dimension into pertinent policies and strategies rather than addressing gender through a separate and isolated process. The inclusion of gender budgeting and sex-disaggregated data administration must be referenced in this policy, which serves as the guiding principle for all programmes, initiatives, and action plans. Effective collection and analysis of gender-disaggregated data are critical to ensuring women are empowered to participate in all aspects of the economy. By doing so, we improve our chances of strengthening our country's economy and advancing the two most pressing global goals of equity and sustainability.
Open Access
Integrating micro-flood irrigation with in-field rainwater harvesting
(University of the Free State, 2012-02) Mavimbela, Sabelo Sicelo Wesley; Van Rensburg, L. D.
The mam aim of the study was to integrate micro-flood irrigation (MFI) with in-field rainwater harvesting (IRWH). The MFI is a short furrow irrigation system that relies on small inflow rates to mitigate the effect of dry spells in crop fields. The IRWH is an in situ based rainwater harvesting technique that harvests rainfall in the form of runoff between crop rows and then concentrates it in the basin area. Given the increased rainfall variability and evaporation (Ev) in the semi arid areas of the central Free State Province of South Africa, the merging of these two technologies is hypothesized to be able to stabilize soil water storage during rainfall and dry spell periods in areas with access to limited irrigation water. The developments in the study were divided into three phases. The first phase dealt with characterization of pedological and hydraulic properties of the soils earmarked for IRWH at the University of the Free State, 20 Km, south of Bloemfontein. These soils were represented by the Tukulu, Sepane and Swartland soil types with the first two forms also referred as Cutanic Luvisols and the latter as Cutanic Cambisols of the Reference Soil Group. These soils were similar only in the orthic A- horizon. The Tukulu had developed structure only in the prismatic C-horizon and for the Sepane it was in the pedocutanic B- and prismatic Chorizons. The Swartland had a cambic structure in the pedocutanic B-horizon. Corresponding hydraulic properties, soil water characteristic curve (SWCC) and hydraulic conductivity for saturated (Ks) and unsaturated conditions (K-8) were determined using in situ and laboratory procedures for internal drainage (ID) and evaporation (Ev) conditions. Parametric models were used to describe SWCC and to predict K-8 relationships. Model descriptions of SWCC were satisfactory. Predictions of K-8 were only accurate at near saturation, but HYDRUS-ID optimization program had better predictions. Matric suction gradients corresponding to the draining soil profile were found to fall within the matric suction range of 0 to -10 kPa. Drainage rate of 0.001 mm hour" corresponded to drainage upper limit (DUL) and deep drainage (DD) losses proportional to 1 % of annual rainfall over the fallow period. The Tukulu, Sepane and Swartland soil types had respectively total DD losses of 21, 20 and 52 mm and evaporation losses of 43, 51 and 70 mm. The Ks corresponding to the C-horizons of these soils was 9.6, 1 and 77 mm hour". During ID and Ev the K-8 functions especially for horizons with a clay content range of 26 to 48 % dropped by several orders of magnitudes, while SWC changed with a narrow margin. At the evaporating surface matric suction of magni tude greater than -1500 kPa were approximated. The second phase compared four inflow rates (20,40, 80 and 160 L min-I) based on surface and subsurface irrigation characteristics carried out on the Tukulu soil due its low DD and Ev losses. A single irrigation on a 90 m closed ended furrow and measurements taken at every 10 m furrow distance for advance and opportunity times, stream flow depth, and SWC before and after the irrigation. Infiltrated depths predictions from HYDRUS-2D software were satisfactory from all inflow rates. Distribution uniformity (DU) was higher (≥ 0.89) at 30 m furrow distance from all inflow rates and the smaller inflow rate much easier to handle. Vertical redistribution was characterized at each of the 10 m furrow distance covered with a 2 m x 2 m polythene sheet to prevent Ev. Over the 455 hours of redistribution agreement between measured and predicted SWC from HYDRUS-2D software varied with depth and furrow length. Low vertical redistribution (Vz) from all inflow rates was attributed to the restrictive prismatic C-horizon. Higher rates of Vz were observed within the 0-600 mm profile domain for the small inflow rates and at 0-850 mm for the large inflow rates. The last phase dealt with the integration of MFI with IRWH, carried out on a 3 x 3 split plot factorial with four blocks in a complete randomized design experiment. Each plot had five 30 m long furrows and a pair of neutron access tubes installed in each plot at the centre of the basin and runoff area. The main treatments were runoff strip width (RSW; 1 m, 2 m and 3 m) and water regime (WR): dryland (DL), supplemental (SPI) and full irrigation (FI). No till and basin tillage was used to prepare the RSW and the 1 m standard basin area (BA). The BA was further smoothed with a ridger for uniform distribution of the advance stream flow. A 120 day maturing maize variety was used. A record of rainfall and SWC was kept. The 40 L min-I inflow rate for 15 minutes irrigation times on a fixed schedule for full and supplemental irrigation, provided by the BEW AB+ irrigation software was used. A soil water balance (SWB) procedure was developed to evaluate the effect of the RSW and WR treatments on the gains and losses in soil water storage. Evapo-transpiration (ET) was partitioned into Ev and transpiration (T) by a ~-parameter based on plant canopy area. Findings showed that SWB components were affected by the main effect from the RSW and WR. The 1 m RSW had the total biomass and grain yields that were respectively 21 % and 45 % higher than the 2 m RSW, and 35 % and 89 % higher than the 3 m RSW. Total biomass and grain yields from full and supplemental irrigation were 200 % and 76 % higher than the DL. Though tested for a single season the combination of 1 m RSW and full irrigation produced optimum crop yields and WUE for the newly merged MFI-IRWH water management system and is ready to be used by small scale farmers who have access to irrigation water.
Open Access
A livestock production systems study amongst resource-poor livestock owners in the Vhembe District of Limpopo Province
(University of the Free State, 2006-09) Nthakheni, Nkhangweni David; Nesamvuni, A. E.; Swanepoel, F. J. C.; Stoebel, A.
Livestock farming practices amongst smallholder black farmers are invariably described and characterised to make various conclusions and predictions. A desire emerged in me to conduct a study and to learn and develop an understanding about livestock production systems with the intention of formulating intervention initiatives. The first encounter with farmers of the study area was not easy, it was during the time when government withdrew from assisting stock farmers with dip chemicals and encouraging them to form dip-tank committees and buy dip with their own money. As a Government official I had to make a contribution in explaining the reasons behind the decision. Being their neighbour, being in a similar situation and also keeping a few heads of cattle myself, helped them to notice that they are not alone. There were however hard liners whom I managed to convince that, when the study commenced, they assisted with the logistics of access to the study area. Other arrangements were facilitated by the officials of the Department of Agriculture, traditional leaders and community based organisations who gave permission for the study to be conducted. Another problem was the difficulty of studying whilst simultaneously being an employee and manning various responsibilities. There were times when I felt that the pressure was unbearable and had to cope with the stress associated with work and study fatigue. This thesis is about the study conducted amongst smallholder livestock owners. Livestock farming systems amongst resource-poor farmers is more complex than we imagine. I have been confused and embarrassed at my limited understanding. Now I am proud of the times when I wrestled with the difficulties to gather knowledge. By having the humility to admit that I have little knowledge and being confused, I was spurred on even if it was like groping in the darkness.
Open Access
Managing transitions in smallholder coffee agroforestry systems of Mount Kenya
(University of the Free State, 2012-05) Carsan, Sammy; Stroebel, A.; Jamnadass, R.; Place, F.
Coffee farming has been a major foundation of Kenya’s rural highland economy for the last four decades or so. Over 600,000 smallholder farmers organized in 579 cooperatives are engaged in the subsector. Coffee was a major source of income, employment and food security until the late 1980’s. Though Kenya produces some of the finest world coffee, the collapse of the International Commodity Agreement (ICA) on coffee and entry into the world market by major producers like Vietnam marked a near collapse of Kenya’s coffee. Exports fell by over 50% between the year 2000 and 2010. This was accompanied by significant loss of productivity (declined to a meagre 200 kg/ha from 600 kg/ha). The situation has contributed to poor living standards in coffee growing areas. Interestingly, there are no credible alternative investments to merit the allocation of constrained farm resources to replace coffee growing. In addition, there are concerns that the current resource base can no longer support enhanced productivity. This study used several research designs to investigate the performance of smallholder coffee agroforestry systems around Mount Kenya. More specifically, enterprise adoption and adaptation practices in the event of increased or decreased coffee production were researched. The evolution of coffee agroforestry systems was also evaluated and management of soil fertility determined. Using coffee yields data obtained from 180 smallholder coffee farmers by stratified random sampling techniques, coffee farm typologies were identified. These farm typologies/categories were labeled as increasing, decreasing and constant - representing their historical trends in coffee production. These farms were then used to investigate current productivity behavior. Simple descriptive statistics such as means, range, counts, enterprise scoring, diversity analysis pair wise correlations and regressions were used to compare farmer enterprise intensification strategies. Results have showed that farms that are decreasing coffee production, though had smaller land sizes are not significantly different from those in the coffee increasing category. Further results showed similarities in farmer enterprise diversification strategies. Coffee was nonetheless declining in smaller farms compared to farm sizes where it was increasing. Results also showed that farms with increasing coffee yields are associated with productive milk enterprises. These farms appear to afford and benefit from larger amounts of fertilizer and manure application. Coffee declining farms view banana and maize as likely alternatives to coffee, perhaps in a strategy to secure household food security. The study has showed that land size, coffee production (number of bushes, cherry yields/Ha), livestock units, agroforestry trees, banana, maize value and nutrient inputs (manure and fertilizer) and labour costs are important factors to assess coffee farms productivity and distinguish farm types. Results have showed the importance of creating more awareness among policy makers in order to promote enterprises that are of interest to farmers. This research also investigated tree diversity presently maintained by smallholders showing a shift in coffee cultivation practices. Trees on farm are traditionally appreciated for product benefits such as timber, fuel wood and food. They are also important for enhanced farm biodiversity and environmental services such as enhanced nutrient cycling. This study applied diversity analysis techniques such as species accumulation curves, rènyi diversity profiles and species rank abundance, to investigate farm tree diversity. At least 190 species were recorded from 180 coffee farms. For all the species enumerated, alpha diversity (H0) = 5.25 and H∞ = 0.89. Results showed that the 10 and 25 most abundant species comprise 75% and 91% of tree individuals present on farm, respectively. Results suggest that, though there is high abundance of tree individuals on farms they are of less richness and evenness. Species richness per farm was calculated at 17 species (15- 19.2, P = 0.95). Grevillea robusta was highly ranked in terms of relative density and dominance across surveyed farms at proportions of 41- 42%. Tree species basal area distribution showed that fruit trees such as, Persea americana, Mangifera indica and timber species such as, Cordia africana, Vitex keniensis and Croton macrostachyus are the most dominant but are of lower relative density. Species diversity analysis by coffee agro-ecological zones revealed that the upper-midland (UM) 3 is ranked significantly higher than UM2 and UM1. Results have implied that farmers with larger quantities of coffee (Coffea arabica L.) also retain more species diversity than farmers with stagnated production even though this evidence was inconclusive. Skewed patterns of species heterogeneity and structure among smallholder coffee plots provide indicators of divergent species cultivation. Tree species richness distribution between farms is strongly influenced by agro-ecological zones and presence of coffee cultivation. Only 22.5% of agroforestry tree abundance on farm was categorized as indigenous. Tree basal area ranking implied that fruit and native timber species are retained longer on coffee farms. Finally, this study assessed the implications of recent changes in coffee cultivation on soil fertility management. It was hypothesized that significant soil nutrient exports have occurred from coffee systems and that present nutrient prevalence are unknown and likely to be poorly managed. The purpose of this research was to inform concerns that with poor soil fertility prevalence, coffee systems face a danger to deteriorate to low production systems. Near-infrared (NIR) spectroscopy was used to analyse soil constituent properties for some 189 soil samples collected on 94 farms (within coffee plots). One third of the samples were used to build calibration models giving correlation coefficients between measured and partial least square (PLS) predicted soil properties. Correlations were strong (r > 0.70) except for P, Zn and Na demonstrating the potential of NIR to accurately predict soil constituents. Principal component analysis (PCA) was then used to develop soil nutrient indices (principal components scores) to serve as representative soil nutrient prevalence indicators. PC scores were also used as dependent variables in regression analysis. Collected data is robust to show that soil organic C, total N and probably P were most deficient across the coffee sites surveyed. Farmer nutrient application practices showed wide variability of fertilizer and manure use. Manure application is less than fertilizer and negatively correlated to farm size. Estimation of manure use per household was however challenging due to quantification and timing aspects of application. Collated evidence showed that farmers with increasing coffee production were more likely to afford larger fertilizer and manure application. Overall results point out that smallholders deliberately concentrate nutrient application on farm enterprises with good market performance. Coffee cultivation has in the past benefited from fertilizer credit facilities from farmer cooperative movements and government bilateral programmes. Declined coffee production is therefore seriously jeopardizing the amount of fertilizer that can be loaned to farmers. In conclusion, this study has identified a number of factors associated with smallholder decision making, resource use and enterprise adoption and adaptation behavior within coffee agroforestry systems of Mount Kenya. Research findings have allowed recommendations to be made on how best to promote farmer resource use, understand farmer decision making and enterprise choices that are of interest to farmers. The study has contributed to knowledge of farmer livelihood strategies when managing coffee farms in conditions of reduced profitability.
Open Access
Potato hash silage as an alternative feed resource for smallholder livestock production
(University of the Free State, 2010-09) Nkosi, Bhutikini Douglas; Groenewald, I. B.; Van der Merwe, H. J.; Meeske, R.
Several experiments were conducted to evaluate the ensiling of potato hash (PH) during the period. In the first experiment, a laboratory study was conducted to determine the nutritive value and ensiling potential of PH with poultry litter (PL) and ground hay as absorbents, and whey and molasses as additives. Triplicate samples of PH, PL and hay were collected and sampled for nutritive composition. Mixtures of 800 g PH/kg + 200 g/kg (as is basis) of either PL or hay were produced and treated with: no additive, whey and molasses. The experiment was conducted in a 2 x 3 factorial design (2 absorbents x 3 additives). Mixtures were ensiled in 108 anaerobic jars (1.5L) with 18 jars per treatment, and were stored at 24 - 28°C room temperature. Sampling was done on days 0, 4, 10, 20, 40, 60 and 90 for the determination of fermentation quality and nutritive value of the silage. Further, an aerobic stability test was done on day 90 by exposing silage to air for 5 days. The results showed that PH had 845 g/kg moisture, 11.4 metabolizable energy (ME) MJ/kg, 105 g crude protein (CP) /kg dry matter (DM) and 704 g starch/kg DM. Ensiling PH with ground hay compared to PL as an absorbent, resulted in a better quality silage as indicated by improved fermentation characteristics and chemical composition. Whey and molasses addition improved the nutritive value and the fermentation quality of PH silage but the aerobic stability was not improved. In the second experiment, potato hash silage (treated with no additive, whey and molasses) was produced by mixing 800 g PH/kg with 200 g hay/kg (as is basis), and ensiled in 210 L drums for 90 days, and the fermentation quality of the silages was determined thereafter. Diets containing either potato hash silage (PHS) or maize (Zea mays) silage (MS) were formulated and fed ad libitum to 32 South African Dorper lambs (23.5 ± 0.873 kg live weight) for 63 days. A digestibility study was conducted during the last week of the study. Furthermore, digestibility of the 3 PHS were compared using 9 sheep in a 3 x 3 Latin square design. The untreated potato hash silage (UPHS) was poorly fermented as indicated by higher (P<0.05) concentration of butyric acid, ammonia-N and pH compared to the other silages. Higher (P<0.05) dry matter intake (DMI) and daily gains (218 and 250 g/d) were obtained in lambs fed maize silage diet (MSd) and molasses treated potato hash silage diet (MPHSd) compared to the other diets. Nutrient digestibility was lower (P<0.05) in the UPHS diet compared to the other dietary treatments. The fermentation quality of PH was improved with whey and molasses addition. However, the growth performance was improved (P<0.05) with the MSd and MPHSd, suggesting that MPHSd can replace MSd in lamb diet at 20 % dietary inclusion level without any adverse effect on animal performance. In the third experiment, PH was mixed with wheat bran (70:30) as fed basis and ensiled in 210 L drum for 90 days. Three types of PHS : control, bonsilage forte (BF) and Lalsil Fresh LB(LFLB) were produced. After 3 months, the silos were opened and sampled for fermentation characteristics. Diets were produced by mixing PHS with soybean meal (90:10) as fed basis and a digestibility study was conducted using five South African Mutton Merino rams (37.2 ± 2.21 kg liveweight) per diet. Inoculating PHS with BF and LFLB reduced (P<0.05) pH, WSC, butyric acid and ammonia N while increasing the concentration of lactic acid compared to the control. A higher concentration of acetic acid was obtained with LFLB inoculation, which improved the aerobic stability of silage compared to the other silages. Intakes of dry (DM) and organic matter (OM) were not affected. Gross energy (GE) and CP of silage were improved (P<0.05) with BF and LFLB inoculations. Inoculants increased CP, GE and amylase treated neutral detergent fibre (aNDF) digestibility, but did not alter DM or OM digestibility. Inoculating silage with BF improved (P<0.05) digestibility of ether extract compared to the other treatments, and both inoculants improved (P<0.05) N intake and retention compared to the control. It is concluded that BF and LFLB improved silage fermentation and diet digestibility of CP, aNDF and gross energy. Inoculation with LFLB improved aerobic stability whilst BF inoculation reduced it. In the fourth experiment, totally mixed rations (TMRs) that contained 804 g PH/kg were ensiled in 1.5 L jars with or without Lalsil Fresh Lactobacillus buchneri (LB) for 3 months. Jars were opened on days, 0, 3, 7, 10, 21, 45, 60 and 90 of ensiling and sampled for fermentation and chemical composition determinations. Aerobic stability was determined on day 90 of ensiling. Treatments were LB treated TMR (LB-TMR) and untreated TMR (U-TMR). Furthermore, three TMRs that contained 801 g/kg of either maize (280 g DM/kg) or PH (as fed basis) were ensiled for 90 days in 210 L drums for lamb growth and digestibility studies. The ensiled TMRs were: Maize TMR (M-TMR), U-TMR and LB-TMR and were fed to 24 South African Dorper lambs (20± 0.152 kg live weight) that were allocated in 8 lambs per diet. Inoculation with LB decreased (P<0.05) pH, butyric acid, NH3-N, fibre fractions, CO2 production and yeast population while lactic acid, acetic acid and propionic acid concentrations were increased (P<0.05) compared to U-TMR silage. The ensiled LBTMR was aerobically more stable than U-TMR silage as indicated by lower (P<0.05) CO2 production and yeast population and higher concentrations of acetic acid. Higher (P<0.05) feed intake, average daily gain (ADG), nutrient digestibility and N retention occurred in LB-TMR silage compared to the other silages. It was concluded that LB is effective in producing a better quality PHS, as indicated by improved fermentation, aerobic stability, lamb growth performance and digestibility of LB-TMR silage.
Open Access
Redefining the role of the extension agent in commercializing South African agriculture: an Eastern Cape case study
(University of the Free State, 2012-02) Van Niekerk, Johan Adam; Van Rooyen, Johan; Swanepoel, Frans; Stroebel, Aldo
English: Agriculture and rural development in the Eastern Cape, and in South Africa, are in vital need of revitalization; especially since the people of the communal areas of the Province are often referred to as the poorest of the poor. Organizations, with specific reference to the Eastern Cape's Department of Agriculture and Rural Development, use agricultural extension as a vehicle for developing agriculture and the rural areas. Presently, the Department uses the Farming Systems Research and Extension (FSR/E) model for this purpose. The objectives for this thesis are to determine: • if this extension model presently used is effective, as well as to determine how to strengthen this model; • the perceptions of extension workers and agricultural researchers on factors supporting effective agricultural extension; • the specific needs of small-scale farmers and how they foresee themselves to become more commercially orientated; • the thoughts of practicing extension workers on the public extension services' strengths, weaknesses, opportunities and threats, and what they believe needs to be done to make the extension service more efficient and effective; • the thoughts of actors from the agricultural support services - namely actors from agribusinesses and agricultural economists - on what role they see the public extension service should play and the steps that the extension service should take in order to be more effective; and • a new extension model for the Eastern Cape will be determined. This was achieved by consulting relevant literature sources, including the experts in the field on the present developments in extension, as well as using a questionnaire to determine the perceptions of the extension workers and agricultural researchers, a Logical Framework Analysis was used to determine the perceptions the small-scale farmers faced as well as the ways that they believed would solve their problems. Another two Logical Framework Analysis wereused to determine the thoughts of practicing extension workers and actors from the agricultural support services on what they believed is needed to strengthen the extension organization. The results from the study revealed information on global extension developments: perceptions of extension workers and researchers; the actual needs of a rural community and their vision of how to become more commercially orientated; the strengths, weaknesses, opportunities and threats of the public extension service as viewed by the province's extension workers; the views of the extension workers concerning the problems that they face and ways to solve these problems; the views of the actors from agribusinesses and agricultural economists - collectively known as the agricultural support services - on the problems they have with the public extension service, the envisaged role that they see for the extension service and their envisaged way forward for the extension service in the province; a matrix of the factors linked to effective extension and the actors involved in strengthening these factors; and proposed a new and strengthened extension model. This new model is a decentralized, market-orientated extension model, which incorporate all actors within the agricultural environment and the actual needs of farmers. Involvement of various actors in strengthening the public extension service and the extension workers' skills was also described and is included in the model.
Open Access
The role of the non-farm sector in rural development in Lesotho
(University of the Free State, 2014) Rantšo, Tšepiso Augustinus; Marais, J. G. L.
It is stated in this research report that even though rural development policies and programmes in many developing countries focus on improving agricultural productivity to ensure food security, little attention has hitherto been paid to improving the rural non-farm sector as an alternative or complementary rural development strategy. Lesotho has been no exception in this regard. For instance, the research findings indicate that although rural development in Lesotho has improved agriculture, productivity in agriculture has in recent decades been in decline because of physical and economic factors. The rural non-farm sector has not been prioritised in rural development in Lesotho. This is the first study in Lesotho to look into the role played by the non-farm sector in rural development as regards the different sectors, namely manufacturing, trade/commerce and service. The thesis firstly scrutinises the changing paradigms of rural development in developing countries. After the Second World War, rural development in developing countries started to improve agricultural production through the adoption of Green Revolution technologies. Evidence from the research reveals that developing countries are characterised by poverty, unemployment, food insecurity and low standards of living and that modernisation in agriculture has aimed to increase food production. The research findings further indicate that though rural non-farm enterprises depend on agriculture for the supply of raw materials, the Green Revolution packages did not explicitly state that agricultural surplus would be used as raw materials in rural non-farm enterprises. What they did emphasise was the idea of ensuring food security. This was accomplished through using different policies and programmes. Most prominent was the Integrated Rural Development, which applied the integrated approach to rural development. At that point the idea of establishing/improving a rural non-farm sector came into being, but the focus was on agro-industries and not on small-scale enterprises. It can thus be said that scant attention was devoted to the rural non-farm sector in developing countries in past decades. The research findings have revealed the rural non-farm sector to have been an alternative or complementary strategy with a view to ensuring momentum in and recognition for agriculture in developing countries in the late 1980s and early 1990s during the adoption of Structural Adjustment Programmes and macroeconomic reforms. The research findings further indicate that Structural Adjustment Programmes advocated retrenchment in the public sector and that this caused unemployment and poverty. The research findings moreover show that the reduction of government subsidies, especially in agriculture ‒ as a specific condition of Structural Adjustment Programmes ‒ caused agriculture to decline, which in turn resulted in food insecurity in many countries. Therefore, as a response to escalating poverty, increasing unemployment and food insecurity, many people participated in non-farm activities so as to make a living. During the period of rural-urban linkages, the establishment of non-farm enterprises gained momentum in developing countries in the 1990s. Evidence shows that rural-urban linkages established good communication networks between urban and rural areas, which served to facilitate trade between rural and urban areas. Research on Lesotho indicates that many people lost jobs in the public sector when Structural Adjustment Programmes were adopted in 1991, and which resulted in unemployment, poverty and food insecurity. Unemployment in Lesotho was further aggravated by retrenchment of Basotho males on the South African goldmines from the early 1990s onwards. In this regard, those families dependent on migrant labourer remittances as a source of livelihood faced food insecurity. However, in order to make a living, many former mineworkers used the retrenchment packages as start-up capital towards the establishment of non-farm enterprises. As a result, the non-farm sector created employment opportunities for the former Basotho mine workers. The research findings moreover indicate that, subsequent to the decline in agricultural production and the loss of jobs in the South African goldmines, rural non-farm incomes have, for many people, become the main livelihood sources for many people. Although rural non-farm enterprises contribute to rural development by creating incomes, employment and ensuring food security, there are various factors that affect the performance of non-farm enterprises: demographic factors and factors related to location, business linkages, competition and government support. For instance, the research findings reveal that education levels have a bearing on the performance of the non-farm enterprises, so much so that the performance of non-farm enterprises owned by entrepreneurs with tertiary education is better than that of enterprises owned by people with low levels of education. Even though enterprises owned by people with tertiary education tend to perform better, the contribution of non-farm enterprises in terms of employment creation, income earnings and ensuring food security is however not significant. Thus, rural development policy should, to a larger extent, focus on the rural non-farm sector, and the different stakeholders should do their part towards improving the sector.