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28 October 2025 | Story Andile Mbowana | Photo Supplied
PhD candidates at the 2025 National 3MT Competition, hosted at the University of the Free State.

The University of the Free State Centre for Graduate Support (CGS) hosted the 2025 National Three-Minute Thesis (3MT) Competition on 24 October in the Albert Wessels Auditorium, bringing together some of South Africa’s brightest PhD minds under one roof. The annual event, which has become a highlight on the national academic calendar, challenges doctoral candidates from universities across the country to present their complex research in just three minutes, using language accessible to a non-specialist audience. 

This year’s competition drew impressive presentations from top scholars representing various disciplines – from health sciences and agriculture to humanities – all showcasing the depth and diversity of South Africa’s research landscape.

Delivering the keynote address, Prof Vasu Reddy, Deputy Vice-Chancellor: Research and Internationalisation at the UFS, reflected on The Essence of Postgraduate Studies and Success in South Africa. He emphasised that postgraduate research plays a critical role in shaping innovation and addressing the country’s most pressing challenges. “As postgraduates, you represent a powerful tool of transformation, equity, and innovation, and every thesis is a story of resilience and a long journey of research,” he said. Prof Reddy also talked about how “competitions like the 3MT not only celebrate research excellence but also teach scholars how to communicate their ideas to inspire real-world impact,” praising the competition for opening opportunities for postgraduate scholars. 

The University of the Free State was represented by two candidates, Rentia du Plessis from the Faculty of The Humanities, who presented her 3MT title, Exploring Instructional Communication Strategic for Holistic Student Development, and Naquita Fernandes from the Faculty of Economic and Management Sciences, with her 3MT title, Triggering Online Review Generation Behaviour

Other universities, such as the Nelson Mandela University, Unisa, the University of KwaZulu-Natal, the University of the Western Cape, the University of Johannesburg, and the University of Pretoria, were also present.

After a series of captivating presentations, Robinah Nakawunde from Stellenbosch University claimed the top prize. Representing the Faculty of Medicine and Health Sciences, her presentation titled, Cured but Not Healed: Uncovering the Lung’s Struggles after TB, captured the attention of both the judges and the audience. Her research sheds light on how pulmonary tuberculosis continues to affect lung function even after successful treatment, highlighting the need for improved post-TB health-care interventions.

The first runner-up position went to Aaron Harvey from the University of Pretoria’s Faculty of Natural and Agricultural Sciences, whose research explores how avocado plants fight root rot disease using RNA interference mechanisms. His presentation, titled How Avocado Cells Fight Against the Root Rot Disease Caused by Phytophthora cinnamomi, Using RNAi Gatekeepers, impressed the judges with its clarity and scientific depth.

Morgan Lee from the University of Cape Town’s Faculty of Humanities took home the second runner-up prize. Her presentation, Locked In: The Hidden Barriers to Sustainable Agriculture, tackled the challenges facing South Africa’s commercial grain sector in transitioning towards more sustainable practices, offering insights that bridge environmental and social considerations.

The 2025 3MT National Competition once again demonstrated the power of concise, impactful communication in research. As the curtain closed, it was evident that South Africa’s future of research and innovation remains in capable hands, ones that can not only investigate deeply, but also explain passionately

News Archive

Water erosion research help determine future of dams
2017-03-07

Description: Dr Jay le Roux Tags: Dr Jay le Roux

Dr Jay le Roux, one of 31 new NRF-rated
researchers at the University of the Free State,
aims for a higher rating from the NRF.
Photo: Rulanzen Martin

“This rating will motivate me to do more research, to improve outcomes, and to aim for a higher C-rating.” This was the response of Dr Jay le Roux, who was recently graded as an Y2-rated researcher by the National Research Foundation (NRF).

Dr Le Roux, senior lecturer in the Department of Geography at the University of the Free State (UFS), is one of 31 new NRF-rated researchers at the UFS. “This grading will make it possible to focus on more specific research during field research and to come in contact with other experts. Researchers are graded on their potential or contribution in their respective fields,” he said.

Research assess different techniques
His research on water erosion risk in South Africa (SA) is a methodological framework with three hierarchal levels presented. It was done in collaboration with the University of Pretoria (UP), Water Research Commission, Department of Agriculture, Forestry and Fisheries, and recently Rhodes University and the Department of Environmental Affairs. Dr Le Roux was registered for 5 years at UP, while working full-time for the Agricultural Research Council – Institute for Soil, Climate and Water (ARC-ISCW).

Water erosion risk assessment in South Africa: towards a methodological framework
, illustrates the most feasible erosion assessment techniques and input datasets that can be used to map water erosion features in SA. It also emphasises the simplicity required for application at a regional scale, with proper incorporation of the most important erosion-causal factors.

The main feature that distinguishes this approach from previous studies is the fact that this study interprets erosion features as individual sediment sources. Modelling the sediment yield contribution from gully erosion (also known as dongas) with emphasis on connectivity and sediment transport, can be considered as an important step towards the assessment of sediment produce at regional scale. 
 
Dams a pivotal element in river networks

Soil is an important, but limited natural resource in SA. Soil erosion not only involves loss of fertile topsoil and reduction of soil productivity, but is also coupled with serious off-site impacts related to increased mobilisation of sediment and delivery to rivers.

The siltation of dams is a big problem in SA, especially dams that are located in eroded catchment areas. Dr Le Roux recently developed a model to assess sediment yield contribution from gully erosion at a large catchment scale. “The Mzimvubu River Catchment is the only large river network in SA on record without a dam.” The flow and sediment yield in the catchment made it possible to estimate dam life expectancies on between 43 and 55 years for future dams in the area.
 
Future model to assess soil erosion
“I plan to finalise a soil erosion model that will determine the sediment yield of gully erosion on a bigger scale.” It will be useful to determine the lifespan of dams where gully erosion is a big problem. Two of his PhD students are currently working on project proposals to assess soil erosion with the help of remote sensing techniques.

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