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02 October 2019 | Story Ruan Bruwer | Photo Hannes Naudé
Pakiso Mthembu and Prof Prakash Naidoo
Pakiso Mthembu (right) receives the trophy as the University of the Free State Senior Sportsman of the Year from Prof Prakash Naidoo, Vice-Rector: Operations. Khanyisa Chawane (Senior Sportswoman of the Year) and Sne Mdletshe (Junior Sportswoman of the Year) was unable to attend the awards function.
Pakiso Mthembu was recognised for his performances in cross-country and Khanyisa Chawane for her feats on the netball court at the KovsieSport Awards function on Tuesday night.

The two were honoured as the University of the Free State’s Senior Sportsman and Sportswoman of the Year for 2019. Achievements between 1 October 2018 and 30 September 2019 were taken into consideration.

Mthembu was South Africa’s second-best senior male athlete at the IAAF World Cross Country Championships in Denmark earlier this year. He also came second in the senior men’s 10 km category of the South African Cross Country Championships and won a bronze medal at the University Sport South Africa Championships in the 10 000 m. It was the seventh consecutive year and ninth time in the last ten years that the men’s winner came from the athletics code.

Chawane has played in 14 of the last 17 tests for the Proteas. She was a member of the World Cup team in July, where they finished fourth – their best performance in 24 years. She also represented the SA Fast5 team and was named as the player of the tournament in the 2018 Varsity Netball competition.

The Junior Sportswoman of the Year award went to another netballer, Sne Mdletshe. She was the co-captain of the SA U20 team for the Africa Union Sport Council Region 5 games in Botswana, which was won by the team. At the National Championship, she was named the best centre-court player. There was no winner in the Junior Sportsman of Year category this year.

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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