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07 May 2025 | Story Precious Shamase | Photo Supplied
Dr Regret Sunge
Dr Regret Sunge – the newly rated NRF Y2 academic.

The University of the Free State (UFS) is proud to announce that Dr Regret Sunge, Lecturer in the Department of Economics and Finance within the Faculty of Economic and Management Sciences, has been awarded a prestigious Y2 rating by the National Research Foundation (NRF). This significant achievement highlights Dr Sunge's exceptional potential as a rising leader in the field of economics and finance.

The NRF Y2-rating is bestowed upon young researchers, typically under the age of 40 and within five years of obtaining their PhD, who have demonstrated considerable potential to establish themselves as leaders in their area of expertise. Dr Sunge's inclusion among the 3,8% of newly rated researchers in South Africa highlights the quality and impact of his work.

Dr Sunge expressed his excitement, stating, "I am thrilled to have received the NRF Y2-rating for the period 1 January 2025 to 31 December 2030. Receiving such recognition through this meticulous process in the field of Economics and Finance – which has a share of only 4,9% of total rated researchers – is even more amazing." He further emphasised the rigorous nature of the NRF rating process, and the insightful feedback received.

 

Factors contributing to this recognition

Dr Sunge attributes his success to a combination of personal dedication, collaborative efforts, and institutional support. His PhD thesis provided a strong foundation, with three of the five reviewed papers originating from this work. Subsequent research collaborations with international peers fostered during his PhD journey further enriched his research by integrating the critical fields of agricultural production and environmental sustainability. The growing number of citations his work has received speaks to its increasing relevance and impact.

The academic also acknowledged the significant influence of key individuals on his research journey, including his PhD supervisor, Prof Nicholas NgepahDr Delphin Kamanda Espoir – a research partner, and his postdoctoral host, Dr Calvin Mudzingiri.

Beyond academic research, Dr Sunge's engagement in research consultation with regional and international organisations has played a vital role. In 2022, he formed a team within the United Nations Young Economists Network (UN-YEN) to study Africa's macroeconomic growth. Additionally, he contributed as a research assistant to the Organisation of Economic Cooperation and Development (OECD) and the African Union Commission (AUC) for their annual Africa Development Dynamics (AfDD) publication.

Dr Sunge also highlighted the crucial institutional support he received from the University of the Free State, specifically the Faculty of Economic and Management Sciences (EMS) on the Qwaqwa Campus, where he was a postdoctoral research fellow at the time of application.

 

Impact of the NRF rating on research standing

The Y2 rating is already proving to be a catalyst for Dr Sunge's research endeavours. "It’s a motivator, I am more confident, and it has greatly enhanced my CV," he noted. He anticipates that this recognition will unlock opportunities for further collaborations and access to competitive research grants and funding programmes, both nationally and internationally.

Furthermore, Dr Sunge's achievement while based on the Qwaqwa Campus enhances the University of the Free State's reputation for supporting young researchers and fostering excellence across all its campuses. His rating serves as a significant source of inspiration for his colleagues on the Qwaqwa Campus, particularly within EMS, where NRF-rated researchers are still few. Dr Sunge hopes that his success will encourage colleagues in the faculty to pursue similar achievements through commitment, dedication, and collaboration.

 

Research focus and its importance

Dr Sunge's research primarily focuses on the intersection of agricultural production and environmental sustainability. His work addresses the critical challenge of ensuring food security amid the growing impact of climate change in a sustainable manner. Recognising the dual challenge of increasing agricultural output to combat food insecurity while mitigating climate change, his research aims to inform environmentally sustainable agrifood systems in South Africa and beyond.

Specifically, his research holds local relevance for Phuthaditjhaba, where livestock agriculture is a significant part of the local economy, with the potential to contribute to more sustainable livelihoods. Utilising a range of econometric methodologies, his research approach is adaptable to various fields of study, facilitating collaboration with researchers from diverse backgrounds.

Acknowledging the dynamic nature of research in economics, particularly in econometrics and data analysis, Dr Sunge emphasises the importance of continuous learning through conferences and workshops. He aims to further develop his econometric and critical thinking skills, as well as sharpen his writing abilities, to elevate his research to new heights.

 

Future research trajectory

Looking ahead, Dr Sunge envisions a research trajectory that combines academic rigour with impactful societal engagement. This involves identifying research problems, providing in-depth academic analysis, and developing solutions that directly benefit communities. His future includes initiating research-based interventions and conducting impact assessments. Achieving this vision necessitates securing research grants, supervising postgraduate students, and actively engaging in community initiatives.

 Over the next five years, Dr Sunge aims to transition from a Y2 to a C-rated researcher, a goal that requires careful planning to balance his research and teaching responsibilities. While committed to advancing his research, Dr Sunge remains passionate about teaching and ensuring that his research activities enhance, rather than detract from, his classroom engagement.

 Dr Sunge’s achievement of the NRF Y2-rating is a significant milestone, both for his personal career and for the University of the Free State. His dedication, collaborative spirit, and impactful research focus serve as an inspiration to colleagues and aspiring economists alike. As Dr Sunge eloquently stated, "My word to aspiring economists, especially from marginalised circumstances, is that with the right mindset, commitment and dedication, we can be counted."

News Archive

Research helps farmers save with irrigation
2017-02-15

Description: Irrigation research Tags: Irrigation research

Marcill Venter, lecturer in the Department of
Agricultural Economics at the University of the
Free State, has developed the mathematical
programming system, Soil Water Irrigation
Planning and Energy Management in order to
determine irrigation pump hours.
Photo: Rulanzen Martin

Her advice to farmers is that they should make sure they are aware of the total cost (investment and operating costs) of an irrigation system. In most cases the investment cost is low, but the operating cost over the lifetime of the system is high.

“It is very important to have a look at the total cost and to install the most economic system,” says Marcill Venter, lecturer at the University of the Free State (UFS), who has done research on the economic sustainability of water-pipe systems.

Irrigation systems important components for farming
This research comes at a time when many farmers are relying on their irrigation systems due to persistent drought and low rainfall during 2016. South Africa has also experienced an abnormal increase in electricity tariffs in recent years. Due to tariff increases which threaten the future profitability of irrigation producers, the Water Research Commission (WRC) has launched and financed a project on the sustainable management of irrigation farming systems. “I had the opportunity to work on the project as a researcher,” says Venter.

The heart of every irrigation system is the water pipes that bring life to crops and livestock, and this is what Venter’s research is about. “Water pipes are part of the whole design of irrigation systems. The design of the system impact certain factors which determine the investment and operating costs,” she says.

Mathematical system to help farmers
Venter and Professor Bennie Grové, also from the Department of Agricultural Economics at the UFS, designed the Soil Water Irrigation Planning and Energy Management (SWIP-E) programming model as part of the WRC’s project, as well as for her master’s degree. “The model determines irrigation pump hours through a daily groundwater budget, while also taking into account the time-of-use electricity tariff structure and change in kilowatt requirements arising from the main-line design,” says Venter. The model is a non-linear programming model programmed in General Algebraic Modeling System (GAMS).

Design of irrigation system important for sustainability

The main outcome of the study is that the time-of-use electricity tariff structure (Ruraflex) is always more profitable than the flat-rate structure (Landrate). The interaction between the management and design of a system is crucial, as it determines the investment and operating costs. Irrigation designers should take the investment and operating cost of a system into account during the design process. The standards set by the South African Irrigation Institute (SAII) should also be controlled and revised.

Water-pipe thickness plays major role in cost cuts
There is interaction between water-pipe thickness, investment and operating costs. When thinner water pipes are installed, it increases the friction in the system as well as the kilowatt usage. A high kilowatt increases the operating cost, but the use of thinner water pipes lowers the investment cost. Thicker water pipes therefore lower the friction and the kilowatt requirements, which leads to lower operating costs, but thicker pipes have a higher investment cost. “It is thus crucial to look at the total cost (operating and investment cost) when investing in a new system. Farmers should invest in the system with the lowest total cost,” says Venter.

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