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12 June 2019 | Story Zama Feni | Photo Charl Devenish
Annatjie Bouwer
Annatjie Bouwer who is a Research Officer in the Department of Paediatrics and Child Health.
The University of the Free State’s (UFS) Prof Hussein Solomon scooped a prestigious Best Published Book award for his critical analysis on the nature of environments, challenges, and opportunities facing the African continent in his book.

Titled African Security in the Twenty-First Century: Challenges and Opportunities, UFS Vice-Rector: Research, Innovation, and Internationalisation, Prof Corli Witthuhn, hailed the book as “An ambitious and in-depth study covering several regions, and with due regard for changing contexts and relevant historical legacies. This analysis is perspicacious, conceptually sophisticated, and based on a solid range of sources.”

UFS awards to stimulate staff creativity

Prof Solomon is a Senior Professor in the Department of Political Studies and Governance. The annual UFS 2018 Book Prize and Research Support Awards is aimed at recognising outstanding contributions by staff members in these focus areas.
Prof Witthuhn congratulated the winners and all the participants who spent time on their submitted work.

The other two entries in the Best Published Book category were Prof Philippe Burger, the Head of the Department of Economics and Finance, for his book titled, Getting it Right: A new economy for South Africa.

The other published book entry was that of Prof Jacobus Naudé, a Senior Lecturer in the Department of Hebrew in the Faculty of the Humanities, titled, A Biblical Hebrew Reference Grammar.

Winning author’s analysis impressive

Prof Witthuhn said the author of the winning book employed a human security approach which not only examined and analysed these challenges, but also assessed the effectiveness of solutions and progress in addressing these challenges.

“This approach is critical to understanding the true meaning and context of security in Africa, by asking questions such as: security for whom and security for what?”

Bouwer comes top in research support category

Ms Annatjie Bouwer, a Research Officer in the Department of Paediatrics and Child Health in the Faculty of Health Sciences, emerged victorious among the nine entrants from various faculties. 

Her award was for the support she offered to the broad community of researchers within the Faculty of Health Sciences.



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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