Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
01 October 2019 | Story Ngang Carol | Photo Stephen Collett
International conference delegates
International delegates attending the International Conference on the Right to Development hosted on the Bloemfontein Campus.

The International Conference on the Right to Development was held in Bloemfontein for the first time from 25 to 27 September 2019, hosted by the Free State Centre for Human Rights at the University of the Free State. This is the third in the international conference series launched in 2017 with the aim of advancing the right to development both in Africa and internationally. This year’s conference follows the previous two that were held at the Centre for Human Rights, University of Pretoria, in September 2017 and August 2018.  

Based on the theme, ‘The right to development and natural resource ownership’, the 3rd International Conference on the Right to Development offered the forum and opportunity to participants from a diversity of backgrounds and disciplines to interact and share knowledge on their research outputs, which extensively explored questions on how natural resource ownership could contribute to the realisation of the right to development. The keynote address was delivered by Prof John C Mubangizi, Dean of the Faculty of Law at the University of the Free State. 

The three-day conference registered a total of 35 participants and 27 presentations out of the 33 that were scheduled. Participants came from different countries, including South Africa, Botswana, Zimbabwe, the Democratic Republic of the Congo, Cameroon, Nigeria, Ghana, Kenya, Uganda, Ethiopia, and the United Kingdom. Some of those who were unable to attend had the opportunity to present their papers through Skype. The presentations stimulated exciting and robust debates. 

The International Conference Series on the Right to Development is jointly organised and co-sponsored by the Centre for Human Rights, University of Pretoria; the Thabo Mbeki African Leadership Institute, University of South Africa; and the Free State Centre for Human Rights, University of the Free Sate. In its three years of existence, it has progressively established a steady track record of publications, including journal articles in special editions of selected journals and collections of chapters in edited volumes. 

The next (fourth) conference is intended to be much bigger and is scheduled to take place in Kigali, Rwanda, in 2021. 

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