Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
24 May 2018 Photo Leonie Bolleurs
UFS and CUT joint SASUF Research Symposium discusses urbanisation
From the left are: Prof Nils Ekelund from Malmö University in Sweden; Buhleng Masake, Honours student in Spatial Planning at the Department of Urban and Regional Planning at the UFS; Per Schubert from Malmö University in Sweden; and Wanda Verster, UFS Department of of Architecture.

The University of the Free State (UFS) and the Central University of Technology (CUT) recently joined hands with the Swedish University Forum (SASUF). The universities jointly presented at a research seminar with the theme: ‘Urban Rural Dynamic’. The seminar was a side event to the stream ‘Urbanisation in the 21st Century’ of the SASUF Sweden-South Africa Research Week that took place in the same week. This stream of the research week was academically chaired by Wanda Verster from the UFS Department of Architecture. 

SASUF is a collaboration of 30 universities in Sweden and South Africa together with embassies, civil society organisations, funding agencies and ministries in both countries of which CUT and UFS are partners. Other themes of the research week were ‘Climate Change, Natural Resources and Sustainability’; ‘Transforming Higher Education Curricula’; ‘Social Transformation Through Change’; ‘Understanding the Burden of Disease’; and ‘Digital Technologies, Big Data and Cybersecurity’. One of SASUF’s main goals is to connect researchers with funding agencies, industry, ministries, and society in working towards the Sustainable Development Goals. 

Tri-partite between local and international universities
The first day of the event was hosted by the UFS Department of Architecture on the Bloemfontein Campus and was supported by the UFS Department of Urban and Regional Planning

The focus of the seminar was on the rural/urban dynamic that secondary cities are frequently experiencing.

Researchers from the UFS, CUT and Malmö University in Sweden presented at the seminar. Stuart-Denoon Stevens, an honours student from the Department of Urban and Regional Planning at the UFS, presented his research on human settlements. “There are 200 million informal settlements in Africa. In 1994 there were 260 informal settlements in South Africa. Today we have 2600 informal settlements,” said Stewart. 

Take hands, not handouts
He believes that one needs to support what is happening rather than introduce new technology all the time. “Take hands, not handouts,” he said. 

Presenters from the CUT included Dilip Das, who presented on sustainable urban roads and transport, as well as Oke Saheed, who gave an overview of research on sustainable water resources and environment. Prof Nils Ekelund, the head of the Department of Science, Environment and Society at Malmö University in Sweden, presented on perceptions of the ecosystem services concept. He presented together with his colleague, Per Schubert, a lecturer in physical geography. 

The Director: Internationalisation at the UFS, Cornelius Hagenmeier, stressed in his welcoming remark the contribution SASUF and the side event organised by UFS and CUT make toward comprehensive internationalisation and strengthening the local collaboration between the two universities in Bloemfontein. 

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.

 

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept