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16 April 2025 | Story Precious Shamase | Photo Supplied
Qwaqwa NAS Achievements
From left to right Prof Richard Ocaya is an Associate Professor in the Department of Physics, Dr Tebogo Motsei and Dr Kamohelo Tshabalala

The Faculty of Natural and Agricultural Sciences (NAS) at the University of the Free State (UFS) Qwaqwa Campus is celebrating a year of remarkable achievements, showcasing the dedication and brilliance of its students and faculty. The 2024 academic year has been marked by outstanding academic performance, prestigious awards, and groundbreaking research, solidifying the faculty's commitment to excellence.


Academic excellence shines bright

The faculty's commitment to rigorous academic standards has yielded impressive results. This year, four doctoral candidates successfully obtained their PhDs, contributing valuable research to their respective fields. Furthermore, the dedication of the honours and master’s students was evident in their exceptional performance. Out of 25 honours students, an impressive 11 achieved distinctions, demonstrating their mastery of their subjects. Similarly, 5 out of 10 master’s students passed with distinctions, a testament to their advanced research capabilities and academic prowess.


Dr Tebogo Motsei: A beacon of innovation and excellence

Among the faculty's many successes, the achievement of Dr Tebogo Motsei stands out as a testament to the calibre of talent being nurtured on the UFS Qwaqwa Campus. Dr Motsei, who recently graduated from the campus, was awarded the prestigious CV Raman Scholarship by the Government of the Republic of India – a recognition bestowed upon only the most promising postgraduate students.

This highly competitive scholarship, named after the Nobel prize-winning physicist Chandrasekhara Venkata Raman, provided recipients with a six-month research opportunity in India. Dr Motsei conducted her research at the esteemed Central Electrochemical Research Institute (CECRI), under the guidance of Prof Arul Manuel Stephan and Prof Sabu Thomas, Vice-Chancellor of the Mahatma Gandhi University. CECRI – one of the most difficult Indian institutes to get admitted into – is part of the Council for Scientific and Industrial Research (CSIR).

Dr Motsei’s research focused on sodium-ion batteries and supercapacitors with lithium-sulphur integration, resulting in significant advancements in energy storage devices. Her innovative work has the potential to revolutionise the field, contributing to more efficient and sustainable energy solutions.   

Adding to her achievements, Dr Motsei also established Lesedi Innovations Pty, a company dedicated to the manufacturing of button batteries and cells of the CR2032 and 18650 form factors. This entrepreneurial endeavour highlights her commitment to translating research into practical applications that benefit society.

For her PhD studies, she was supervised by Prof Richard Ocaya in the Department of Physics, and co-supervised by Dr Kamohelo Tshabalala, Senior Lecturer in the Department of Physics. Prof Ocaya, proud of Motsei’s achievements, believes that this fellowship not only serves as a great motivation for students – especially on the Qwaqwa Campus – but also highlights the global relevance of the UFS, particularly the Department of Physics.


A message of pride and congratulations

Prof Aliza le Roux, Assistant Dean of the Faculty of Natural and Agricultural Sciences, expressed her immense pride in the students and staff. "I would like to congratulate the NAS students and staff members on this fantastic achievement – it’s a sign of people going out of their way to do their best and make their research work despite any obstacles thrown in their way. These distinctions show that we have smart, dedicated, creative people in NAS, and I’m very proud of all of them. For students, this means great opportunities ahead, and for staff, it is a sure sign that they did something right in their mentorship and teaching. Thank you to this wonderful team," concluded Prof Le Roux.

The UFS Qwaqwa Campus congratulates all the graduates, distinguished students, and dedicated staff of the Faculty of Natural and Agricultural Sciences. Their accomplishments are a testament to the university's commitment to fostering academic excellence and innovation. The faculty continues to fly the UFS flag high, inspiring future generations of scientists and researchers.

News Archive

Sunflowers are satellite dishes for sunshine, or are they?
2016-07-20

Eighty-six percent of South Africa’s
sunflowers are produced in the
Free State and North West provinces.

Helen Mirren, the English actress, said “the sunflower is like a satellite dish for sunshine”. However, researchers at the University of the Free State (UFS) have found that too much of this sunshine could have a negative effect on the growth of sunflowers, which are a major source of oil in South Africa.

According to Dr Gert Ceronio from the Department of Soil, Crop, and Climate Sciences at the UFS, extremely high soil temperatures play a definite role in the sprouting of sunflower seedlings. Together with Lize Henning, professional officer in the department, and Dr André Nel from the Agricultural Research Council, he is doing research on biotic and abiotic factors that could have an impact on sunflowers.

Description: Sonneblom 2 Tags: Sonneblom 2

Various degrees of deformity (bad-left
to none-right) in seedlings of the same
cultivar at very high soil temperatures.
Photo: Dr Gert Ceronio

Impact of high temperatures on sunflower production

The Free State and North West provinces, which produce 86% of South Africa’s sunflowers, are afflicted especially by high summer temperatures that lead to extremely high soil temperatures.

Dr Ceronio says: “Although sunflower seeds are able to germinate at temperatures from as low as 4°C to as high as 41°C, soil temperatures of 35°C and higher could have a negative effect on the vegetative faculty of sunflower seedlings, and could have an adverse effect on the percentage of sunflowers that germinate. From the end of November until mid-January, this is a common phenomenon in the sandy soil of the Free State and North West provinces. Soil temperatures can easily exceed the critical temperature of 43°C, which can lead to poor germination and even the replanting of sunflowers.”

Since temperature have a huge impact not only on the germination of sunflower seeds, but also on the vegetative faculty and sprouting of sunflower seedlings, Dr Ceronio suggests that sunflowers should be planted in soil with soil temperatures of 22 to 30°C. Planting is usually done in October and early November. Unfortunately, this is not always possible, as soil moisture is not optimal for growth. Farmers are then compelled to plant sunflowers later.

Impact of herbicides on sunflower growth

“High soil temperatures, combined with the herbicide sensitivity of some cultivars, could lead to the poor development of seedlings," says Dr Ceronio.

The use of herbicides, such as ALACHLOR, for the control of weeds in sunflowers is common practice in sunflower production. It has already been determined that ALACHLOR could still have a damaging effect on the seedlings of some cultivars during germination and sprouting, even at recommended application dosages.

“The purpose of the continued research is to establish the sensitivity of sunflower cultivars to ALACHLOR when exposed to high soil temperatures,” says Dr Ceronio.

 

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