Latest News Archive

Please select Category, Year, and then Month to display items
Categories
UFS News Media Release Research
Years
2017 2018 2019 2020 2021 2022 2023 2024
Months
January February March April May June July August September October November December
Previous Archive
21 September 2018 Photo Charl Devinish
Abe Bailey Bursary victor
“I believe in self learning,” says 2018 UFS Abe Bailey victor, Nkahiseng Ralepeli.
The Abe Bailey Trust is a leadership-development opportunity that targets university students or junior lecturers who are academically strong and have shown exceptional qualities of leadership and service. Recipients of the bursary are required to have a good record of accomplishments, not only on campus but also in a broader social context, where they function as an integral piece of a select and highly-skilled group of individuals.

Ralepeli, the over-achiever

Final-year Law student, Nkahiseng Ralepeli, embodies this exact description and exemplifies the essence of distinction and merit when it comes to who he is. Ralepeli  who has represented the university at various international debate platforms, an alumni of the F1 programme to Thailand and other leadership programmes such, recently, International Youth Leadership Conference (IYLC) programme in Prague, will represent the University of the Free State (UFS) during the Abe Bailey Travel Bursary tour in the UK in December 2018. He, along with 16 other candidates from other South African tertiary institutions, will participate in the tour for its full duration and will take part in the exciting developmental programme that is planned.

With an intense but fruitful leadership-training schedule, he said he was looking forward to meeting the British members of parliament as well as other persons of stature in the British government.

Travelling: A catalyst for critical thinking

Ralepeli, who was also 3rd overall Kovsie Dux student, underlined that he truly enjoys travelling. He has subsequently mastered the art of constantly positioning himself among the best academically and socially, and this has aided his mission to trot the globe extensively, which he has been doing since his junior years.

A man of value

“I have a small yet select and impactful network of people in my life who play an influential role in reminding me during times of triumph that, while it is important to celebrate, each win is just a step towards the ultimate goal of success,” said Ralepeli. 

He emphasised the importance of the roles played by those close to him, describing them as “my double-edged sword who played a crucial role in carving out the inner Nkahiseng, who, hopefully, will do great things”. The Kovsie Dux believes that those you surround yourself with, channel the kind of energy that will either make or break you.

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