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16 October 2024
Prestige Lecture by Justice Albie Sachs

Invitation

Who actually wrote the Constitution?

The Dean of the Faculty of Law, Prof Serges Kamga, invites you to a Prestige Lecture which will be delivered by Emeritus Constitutional Court Justice Albie Sachs.

Date: 30 October 2024

Time: 17:30

Venue: Equitas Auditorium

RSVP: Before 20 October 2024 (RSVP here)


Albie Sachs is an activist, writer and former judge on the Constitutional Court of South Africa (1994 – 2009). He began practising as an advocate at the Cape Bar at the age of 21, defending people charged under the racial statutes and security laws of apartheid. After two spells of being detained in solitary confinement without trial, first for five months, then for three months, he went into exile in England, where he completed a PhD at Sussex University. In 1988, he lost his right arm and his sight in one eye when a bomb was placed in his car by South African security agents in Maputo, Mozambique. After the bombing, he devoted himself to the preparations for a new democratic constitution for South Africa. When he returned home from exile, he served as a member of the Constitutional Committee and the National Executive of the African National Congress until the first democratic elections in 1994.

Sachs is a Board member of the Constitution Hill Trust, which promotes constitutionalism and the rule of law. He has travelled to many countries sharing South African experiences that might help heal divided societies.

He is the author of several books, including The Jail Diary of Albie Sachs, Justice in South Africa, Sexism and the Law, Soft Vengeance of a Freedom Fighter and The Strange Alchemy of Life and Law. His latest books are We, the People: Insights of an activist judge (2016) and Oliver Tambo's Dream (2017). He received an honorary doctorate in Law from the UFS in 2022.

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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