MSc (Statistics) / Department of Statistics / See the attached abstract below

MA (Psychology) / Department of Psychology / Students enter university with the hope to graduate and become successful one day but those hopes are shattered when their academic results decrease. Despite poor performance and poor results of students’ academics, there has been a need to investigate why students’ performance differs significantly. Students achieve low academic performance due to psychological, social and behavioral problems which arise during academic life. The aim of this study is to explore factors contributing to poor academic performance faced by students at a selected department rural university, Limpopo province. The study was conducted at the University of Venda (UNIVEN), situated in the scenic Vhembe District of the Limpopo Province. A qualitative approach using phenomenological design was used for this study. A sample of 15 students was selected from the target population using non-probability purposive, convenient random sampling method. Data were collected through a semi-structured interview. An interpretative phenomenological approach was used to analyse data. The study findings indicate that revealed that low levels of social support from parents, friends and family contribute to anxiety experienced by students at the university. In addition, Students developed low self-esteem, low self-confidence as a result of poor academic literacy, low marks and lack of social support. The study recommends that Head of the Department to have an open session for students to discuss matters concerning the teaching and learning style offered to them and ways to improve. / NRF

MSCAGR (Agricultural Economics) / Department of Agricultural Economics and Agribusiness / ABSTRACT This study was carried out to determine how members of households perceive economic benefits of production and marketing of Moringa in the Thulamela Local Municipality. The study adopted the snowball sampling procedure to identify the population of members of households who produce and market Moringa. Simple random sampling procedure was adopted to select 146 participants from the identified population. The Cross tabulations and Probit regression model were used as the analytical tools for this study. The results of the study revealed amongst others, that majority of members of households who were producing Moringa had no access to Moringa markets, and most of them were aware of the economic benefits of Moringa. The statistical significant variables which influenced the perceptions of members of households regarding economic benefits of production and marketing of Moringa were level of education (p < 0.01), Moringa farming experience (p < 0.05), access to market (p < 0.05), as well as the access to information (p < 0.05) about the production and the demand of Moringa produce. The study concluded that majority of respondents perceived that the production and marketing of Moringa would help to achieve sustainable livelihood for people living in Thulamela Local Municipality, while others were of the view that Moringa has the potential to improve nutrition, boost food security and foster rural development. The study recommended that establishment of Moringa markets, formation of Moringa cooperatives and promotional campaigns to educate members of households about the economic benefits of Moringa should be enhanced. / NRF

The research is concerned with how the post-mortem report can be used as a source of information in the investigation of murder cases to identify crime, individual crimes and trace suspects, etc. The understanding of the post-mortem report, and the information which can be obtained from it, will assist the police investigators to handle murder cases in a professional way. The purpose of this research was to evaluate the existing manner in which police investigators use post-mortem reports in their investigations, with the intention of determining its strengths and weaknesses, and considering how the usage can be improved. Secondly, the researcher wanted to explore how investigators use postmortem reports as a source of information in their investigations. To accomplish this, the researcher perused international and national literature in an attempt to explore the field. The researcher wanted to apply the new research knowledge in order to develop good practice in the field. This has been done by recommending new procedures to enhance performance and to improve the conviction rate in court cases. / Police Practice / M.Tech. (Forensic Investigation)

PhDPH / Department of Public Health / There is a growing concern over the rising cases of adolescent pregnancy, drug and substance abuse, poor academic performance, violence, high school dropout rate and HIV/AIDS prevalence among secondary school students. The grounds of these problems are considered to be related to inadequate Life Orientation Education which should equip the learners with psychosocial competencies, but the ability to make informed decision, solve problems, think creatively and critically, communicate effectively, build healthy interpersonal relationships is lacking among the youths (Dash, 2018). The purpose of the study was to develop strategies to facilitate the implementation of existing Life orientation curriculum in secondary schools of Limpopo province, South Africa. An exploratory sequential design was used in this study. This research design had three stages. In the first stage (1a) the researcher collected and analysed quantitative data. Based on the quantitative results, the researcher will then engage a second stage (1b), the qualitative phase, to test and make the general view of the initial findings. This was followed by phase 3, which was the development of the coping strategies and validation of the strategies as outlined. Purposive sampling was employed to select two districts and then four circuits. Phase 1a identified factors influencing implementation of existing Life Orientation curriculum. Eight schools were selected using stratified random sampling. Simple random sampling was used to select 521 grade 10, 11 and 12 adolescent girls. Data was collected through a self-designed and self-administered questionnaire. Data was analysed descriptively using statistical software Stata/IC version 15.0. of the computer program. Validity and reliability were ensured. Phase 1b identified the predisposing, enabling, and reinforcing factors that can affect the behaviours, attitudes, and environmental factors contributing to the implementation of Life skills programmes in schools. A qualitative approach, and explorative, descriptive and contextual designs were applied. The population were all guardians and school teachers. Purposive sampling was used to select guardians for the focus groups discussions and teachers for in-depth interviews. Data analysis employed Tesch open coding method. Phase 2 was the development strategies to facilitate the implementation of existing LO programme in Limpopo province. Results from Structured Interviews, Focused group, Questionnaires were fused together with the use of the Precede Proceed Model. Phase 3 was to validate the developed strategies. The aim of validation was to collect and evaluate data, from the process design stage, the consistency and quality of the product or outcome of the strategies. The objectives to validate the strategies were to: determine the credibility of the strategies. The researcher used the non–experimental, intervention validation design to validated the credibility of the developed strategies. The developed strategies were given to the learners, guardians and Life Orientation teachers Vhembe and Mopani district. To collect data, the researcher used a checklist with 6 questions as outlined by Chin and Kramer (refer to table 6.4). Simple descriptive statistics was use where the data was summarized using the frequency distribution. / NRF

The research is concerned with how the post-mortem report can be used as a source of information in the investigation of murder cases to identify crime, individual crimes and trace suspects, etc. The understanding of the post-mortem report, and the information which can be obtained from it, will assist the police investigators to handle murder cases in a professional way. The purpose of this research was to evaluate the existing manner in which police investigators use post-mortem reports in their investigations, with the intention of determining its strengths and weaknesses, and considering how the usage can be improved. Secondly, the researcher wanted to explore how investigators use postmortem reports as a source of information in their investigations. To accomplish this, the researcher perused international and national literature in an attempt to explore the field. The researcher wanted to apply the new research knowledge in order to develop good practice in the field. This has been done by recommending new procedures to enhance performance and to improve the conviction rate in court cases. / Police Practice / M.Tech. (Forensic Investigation)

MSCAGR ( Plant Production) / Many high valued tree species of medicinal significance in the Limpopo Province, South Africa exhibit seed dormancy, and also contain aromatic oils which inhibit rooting of their stem cuttings. These plant species are under pressure due to human over-exploitation. The main objective of this study was to investigate effects of rooting hormones on the rooting ability that will help in domesticating some of the selected high valued medicinal plants, Elaeodendron transvaalense (bushveld saffron), Brackenridgea zanguebarica (yellow peeling plane), and Warburgia salutaris (pepper-bark tree). Stem cuttings of these plant species were prepared and treated with various concentrations (500, 1000 and 2000 ppm) of IBA, IAA and NAA in different growth media (Natural soil, farm soil and hygromix) at a nursery house. 180 experimental units were sown and arranged in Randomized Complete Block Design (RCBD), each treatment replicated five times and then monitored for a period of three months. Data were only obtained from Brackenridgea zanguebarica as other species dried up two weeks after sprouting. The two variables measured from the experiments were sprouted stems and number of leaves. The data obtained were subjected to analysis of variance and least significant difference (LSD) at 5% probability level was used to compare treatment using STATISTICA software analysis package. The hormone, hormone concentration, growth media and their interactions had effect on sprouted stems and number of leaves produced on Brackenridgea zanguebarica cuttings, with no record of rooting ability. IBA (500 ppm and 1000 ppm) and control (without rooting hormone) showed high significant results with natural soil and farm soil in terms of leaf production compared to the hygromix, which is significantly lower from others. IBA at the various concentrations (500, 1000 and 2000 ppm) and the control gave the highest percentage sprouted stem on both natural soil and farm soil as compared with other hormones at the same / NRF

MESHWR / Department of Hydrology and Water Resources / In South Africa, inland aquaculture is on the increase, especially among the rural communities. Thus aquaculture is able to provide a source of employment and improve rural incomes. This study assessed algae species and their cyanotoxins in small holder production in Vhembe district, Limpopo, South Africa. Thirteen study sites were selected to assess the algae species and their cyanotoxins. The water samples were collected in four quarters and analysed for water temperature, pH, total dissolved solids, Electrical conductivity, phosphates, nitrates, chlorophyll, cyanobacteria, cyanotoxins, metal species and quality of the water in the fish ponds. In the 1st quarter of the year there was variation in Water Temperature (23.7oC-31.4oC), pH (5.5-9.6), EC (3.82-46.8μS/cm), TDS (2.4-45 mg/L), Phosphate (0.0-1.09mgL-1), Nitrates (0.0-1.00mgL-1), Chlorophyll-a (5.8-11.5mg/m-3). In the 2nd quarter there was variation inwater temperature (22.4-25.0oC), pH (6.6-8.8.9), EC (19.23-21.47μS/cm), TDS (12.5-17.9 mg/L), Phosphate (1.64-1.84mgL-1), Nitrates (1.02-1.88mgL-1), Chlorophyll-a (4.6-15.6mg/m-3). In the 3rd quarter there was variation for water temperature (22.9-25.0oC), pH (7.5-9.1), EC (7.91-293.3μS/cm), TDS (11.7-180.9 mg/L), Phosphate (1.10-1.80mgL-1), Nitrates (1.28-1.84mgL-1),Chlorophyll-a (6.8-15.6mg/m-3). In the 4th quarter there was variation forwater temperature (23.5-30.3), pH (7.1-9.3), EC (18.24-623μS/cm), TDS (23.7-136.4 mg/L), Phosphate (1.45-1.99mgL-1), Nitrates (1.43-1.68mgL-1), Chlorophyll-a (6.6-25.9mg/m-3). The metal content of the fish pond water was variable throughout the year but with moderate levels of Al, Cd, Cr, Mn, Fe, Cu, Zn and Ba were found. The metal Fe, exceeded the DWAF guideline values during this first quarter. The presence of Cd in the fish pond water could be attributed to rainfall eroding the earthen embankments of the fish pond. The results of physico-chemical parameters promotes the growth of cyanobacteria in the fish ponds. Flow cam and SEM were used to identify the cyanobacteria species and most cyanobacteria identified are hazard to human health, fish and other aquatic organisms. Molecular technologies were used to identify cyanotoxins and there was no cyanotoxins detected which was concluded that during collection of water samples no cyanobacteria produced toxins. / NRF

MEd (Educational Management) / Department of Educational Management / Subject heads of departments (SHDs) play pivotal role in the leadership and curriculum delivery in secondary schools; yet they are still expected to lead departmental teams and to promote quality of teaching and learning. They find themselves in complex situations of leading departmental teams and of leading instructions in secondary schools. The purpose of this study is to investigate the challenges facing SHDs in promoting quality teaching and learning of dysfunctional Secondary schools. Qualitative research methodology was employed using case study research design to collect data through interviews and on-site observation checklists. Purposive sampling procedure was used to select four (4) out of seven (7) dysfunctional secondary schools. Sixteen (16) SHDs from the seven secondary schools were the population of this study. A total of ten (10) SHDs were sampled to be the participants in this study. Semi-structured individual interview schedules and on-site observation check list were used to collect data from participants. A voice recorder was used to record interviews and data collected was interpreted verbatim. The purpose of using on-site observation was to serve check the practicability and verification of data collected during interviews. Data from the two instruments was triangulated, analysed and interpreted verbatim. Common themes were drawn followed by interpretations and conclusions. The researcher presented general views of participants and linked them with relevant literature. The researcher hoped that this study will benefit teachers, school management teams (SMT) and researchers in understanding the challenges facing SHDs in promoting quality teaching and learning in dysfunctional Secondary schools (DSS). Empirical findings revealed that SHDs are facing complex challenges of promoting quality teaching and learning in dysfunctional Secondary Schools. Furthermore, it is recommended that SHDs should be supported internally by Principals and deputy principals. Equally importance is that external support by curriculum advisors should be ongoing. / NRF

MSCAGR (Plant Production) / Department of Plant Production / Poor soil fertility caused by inadequate supply of nutrients on soil is one of the major constraints limiting crop production especially in the Vhembe District Municipality, Limpopo, South Africa. Therefore, management practices such as application of organic manure to minimize soil infertility is considered as good practice for smallholder farmers. This study aimed at evaluating the effect of macadamia husk compost on selected soil properties as well as the growth and yield of Chinese cabbage on sandy loam soil. A field experiment was carried out during 2018 and 2019 winter season at the Agricultural Research Council (ARC) research farm in Levubu. The experiment was laid out in a randomized complete block design (RCBD) with 4 treatments (control (zero)), inorganic fertilizer (100:60:60 NPK Kg ha-1) and compost at 15t ha-1 & 30t ha-1 replicated 3 times. Soil was analyzed before planting and after harvesting to determine the influence of applied compost on selected physical properties (soil bulk density and water holding capacity) and chemical properties (soil pH, soil organic matter, soil organic C, EC, total N, P, K, Ca, Mg, Na, Al, Zn and Mn). Number of leaves, fresh mass, dry mass and leaf area was collected at three harvests interval (28, 46 and 74 days after transplanting). After each harvest period, leaves were analysed for nutrient content (N, P, K, Ca, Mg, Zn, Cu, Mn and B). During the final harvest crops were uprooted and root biomass (fresh mass, dry mass and root length) were recorded. Analysis of variance (ANOVA) were conducted on all data using Genstat package 18th addition. Differences between treatment means were separated using the least significant differences (LSD) procedure and correlations analysis was determined using Pearson’s simple correlation coefficient. Macadamia husk compost application had a significant effect on soil bulk density and water holding capacity. Addition of macadamia husk compost significantly increased soil pH, OC, N, C: N K, P, Mg, Ca, Na, Al, Zn, Ca and Mn. In contrast, addition of macadamia husk compost had no effect on soil EC. Yield components (number of leaves, fresh mass, dry mass), root biomass, root length and leaf area increased with application of macadamia husk compost. Yield components, root biomass, root length and leaf area were significantly affected (p<0.01) by harvesting time. Yield components in the second cropping season was greater than yield components in the first season. Macadamia husk compost application showed no significant effect on leaf nutrient content of Chinese cabbage. However, leaf nutrient content was affected by harvesting time. It is evident from the results of this study that macadamia husk compost affects soil fertility and plant production. The results suggest that macadamia husk compost has a potential to be used as a reliable fertilizer by famers especially smallholder farmers who struggle to buy inorganic fertilizer because they are expensive. Since this study was conducted over two seasons and compost effect tend to be long term, further research is needed on application of macadamia husk compost on soil properties and yield of other crops over wide range of soils. / NRF