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15 September 2022 | Story NONSINDISO QWABE | Photo UFS Photo Gallery
UFS Qwaqwa Campus
The UFS Qwaqwa Campus.

Recent global happenings have challenged communities and humanity’s capability to solve immediate and major problems. Science has been one of the spaces in which the communities have looked for solutions regarding real threats to lives related to climate change, wars, as well as social and health pandemics. The Qwaqwa Campus will be showcasing Qwaqwa Campus research and scholarship at this year’s research conference, a two-day event which will be held in person, on 29-30 September 2022 at the Senate Hall on campus.

‘Scholarship, Innovation and Science: how can research be used as a tool for the betterment of society?’

Under this theme, the conference will be a space for intellectual debate and the processing of scholarship in innovation, said Prof Pearl Sithole, Vice-Principal: Academic and Research. “Some of the societal challenges have been urgent and pressing, yet some are slow dilemmas shattering the hope of generations for a better future. This conference will present the products of ‘disciplinary and scholarly crafts’, but it also seeks to explore whether science does (or should) have a strategic direction, and perhaps this is what the concept of innovation should entail. It will ponder on whether in the age-old binary between exploratory research and praxis there is a defeating taming of the entrepreneurial edge for the expanse of science in Africa,” she said.

Prof Sithole said the campus would also be launching its research strategy for 2022 to 2026.

Guest speakers include:

• Prof Percy Hlangothi is an Associate Professor of Physical and Polymer Chemistry at the Nelson Mandela University. He is also the inaugural Director of the Centre for Rubber Science and Technology, a research entity in the Faculty of Science at the same institution.

• Mr Lukhona Mnguni is a governance, politics, and development specialist and prolific political analyst specialising in Africa and international relations, as well as a PhD intern at the University of KwaZulu-Natal. He currently serves as the Head of Policy and Research at the Rivonia Circle. His work includes a current affairs analytical show on eNCA dubbed On the Spot with Lukhona Mnguni.

• Prof Dipane Hlalele is a Professor of Education and a C2 NRF-rated researcher. He is a highly rated scholar in inclusive education, critical pedagogy, and educational psychology at the University of KwaZulu-Natal. Prior to joining UKZN as an associate professor in 2017, he was an assistant dean and senior lecturer at the UFS, a college of education lecturer, and a high school deputy principal and teacher. 

To RSVP please click here on or before 19 September 2022.

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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