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12 July 2019 | Story Ruan Bruwer | Photo Varsity Sport
Antonet Louw
Antonet Louw, star hockey player, was the leading goal scorer at the University Sport South Africa championship in Stellenbosch. She achieved the same milestone in the Varsity hockey competition in May.

Improvement by the Shimlas, men’s hockey, volleyball (men and women), and basketball teams (men and women), and stumbling over the final two hurdles by the netball and women’s hockey teams.

This, in a nutshell, was the Kovsie story at this year’s University Sport South Africa (USSA) championships that took place across the country in the first week of July.

The Shimlas improved from fourth to third place in 2019, winning two of their three encounters. The hockey men, who finished second in last year’s B Section, were unbeaten in 2019, earning them an automatic promotion to the A Section in 2020.

The men’s volleyball team improved from 11th to 6th place, the women from 15th to 5th, and the basketball men (6th) and women (9th) improved by three and one positions respectively.

For a large part of the netball and women’s hockey tournaments, it looked very promising that one or both of the UFS teams could go all the way.

The netball team has won all five of their group matches, including victories over the North-West University (NWU) and Tuks, against whom they lost in the play-off fixtures on the final two days.

Another milestone by Antonet
This was also the case with the women’s hockey team. They recorded wins in all three of their group matches, including a 3-0 win over the Maties, who were the Varsity hockey runners-up in May. In the semi-final, Tuks prevailed by 4-0 and in the play-off for third/fourth place, the Maties triumphed by 3-1.

Antonet Louw, the leading goal scorer during the Varsity hockey tournament, again contributed the most goals (five in five matches).

In the fencing championship, Relebohile Pule (women’s epee) and Johanco Viljoen (men’s sabre) both returned with bronze medals.

Ewald van Zyl (elite male kumite +84 kg, gold medal) and Diena Benade (elite female kumite -68 kg, gold) were the two standouts in karate.

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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