Latest News Archive

Please select Category, Year, and then Month to display items

UFS student attends COP27 Simulation Model in Egypt

26 September 2022 | Story Anthony Mthembu | Photo Supplied

Letsatsi Lekhooa, a UFS student who was selected to be part of the COP27 Simulation Model.

Nearly 150 students from across the world will gather in Egypt for the COP27 Simulation Model from 9 September to mid- October 2022. Among them will be Letsatsi Lekhooa, a Master of Science student specialising in Climate Change from the University of the Free State (UFS).

Lekhooa was one of 150 students from a pool of more than 1 800 applicants across the world who were selected to be part of this prestigious initiative. “This opportunity is appealing, because as young people we need to work hard to not only ensure that we break through walls, but to also represent our university well everywhere we go,” Lekhooa indicated.

The COP27 Simulation Model

The COP27 Simulation Model, which is organised by the British University in Egypt along with the United Nations Development Programme (UNDP), is a worldwide climate conference led by and targeted at the youth. The conference is important for several reasons, such as encouraging conversations around climate action among the youth. As it stands, the initiative is split into two categories, which include the hybrid capacity-building programme that started in September, and the COP27 Mock Conference set to begin in October. Lekhooa is currently engaged in the online capacity-building programme, which he describes as a learning curve. “Every day I learn something new, and I enjoy it because the process is assisting me in learning more about this climate change issue,” Lekhooa expressed.

The benefits of attending the COP27 Mock Conference

Although the first leg of the COP27 Simulation Model is online, Lekhooa will get the opportunity to travel to Egypt and physically be part of the COP27 Mock Conference on the campus of the British University in Egypt. As such, he hopes to take away as much as possible from the experience. “I hope to learn about the ways in which I can better communicate this climate change issue, not only in my home country of Lesotho, but generally in Southern Africa,” said Lekhooa. Furthermore, through his interactions with international scholars, he hopes to create and encourage a collaborative spirit to battle climate change.

The experience does not only serve as a learning curve for Lekhooa, but it is also one of the key steps that will allow him to reach a life goal. “I would like to be an international consultant in bodies such as the Intergovernmental Panel on Climate Change (IPCC), and the United Nations Framework Convention on Climate Change (UNFCCC), as they play a key role in making decisions on climate change,” Lekhooa highlighted.

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.

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

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