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06 March 2020 | Story Igno van Niekerk | Photo Igno van Niekerk
 Gert Marais looking at pecan leave_
Dr Gert Marais says the UFS is helping to ensure that the pecan industry not only survives but thrives.

“When opportunity knocks, you must jump. The more opportunity knocks, the more you should jump.” 

Look closely, and you will notice the rise in pecan-nut plantations as you travel through South Africa. Do not be surprised if you find that the UFS’s pecan-nut project – steered by Dr Gert Marais, Senior Lecturer in the Department of Plant Sciences – is associated with those pecans.

Main exporter
In an ever expanding and interconnected global economy, South Africa has joined the USA as main exporters of pecan nuts to China. We have several advantages; our seasons differ from that of the USA, and we have the benefit that we are harvesting and exporting pecan nuts at the time when they are most popular at Chinese festivals and events.

Although it takes a long time to grow pecan trees (seven to eight years before they start producing), the long wait has extensive benefits. Dr Marias explains: “Unlike other crops, you do not have to prepare the soil and plant new crops annually. Rather than re-investing, you only need to do proper maintenance. Once planted, the pecan trees can produce for generations to come. And the UFS is involved in ensuring that the pecan industry not only survives but thrives.”

Empowering farmers
As the pecan industry in South Africa grows, new challenges are identified. Some trees suffer from a condition called overall decline, others from scab, and some others are infested by combinations of fungi not found in other countries. Dr Marais and his team have filed several ‘first reports’ of combinations between pecans and pathogens, leading to opportunities for MSc research projects and making a difference in the industry.

Dr Marais undertakes six field trips per year to visit all the production areas in South Africa, share information at farmer’s days, arrange courses to ensure best practices with regard to pecan cultivation; students also use these visits to collect samples for their research. Due to the systemic collaboration between the private sector and the university, farmers are empowered to manage their pecan crops better, the university benefits from cutting-edge research, and South Africa becomes a stronger player in the international economy.

Opportunity is knocking. And the UFS is jumping.

News Archive

Final lecture in Darwin series presented at the UFS
2010-02-23

At the lecture were, from the left: Prof. Terence McCarthy, Prof. Jo van As, Chairperson of the Darwin 200 Committee and Head of the Department of Zoology and Entomology at the UFS, Prof. Bruce Rubidge, Elsabe Brits, journalist at Die Burger and Esther van der Westhuizen, presenter on Groen.
Photo: Leonie Bolleurs


The University of the Free State (UFS), in collaboration with the Central University of Technology, Free State (CUT) and The National Museum in Bloemfontein recently hosted the final lecture on the Charles Darwin lecture series entitled “The story of life and survival”.

The lecture was presented by Prof. Bruce Rubidge, the Director of the Bernard Price Institute for Paleontological Research at Wits University and Prof. Terence McCarthy, a Professor of Mineral Geochemistry at Wits and Head of the Department of Geology. Proff. Rubidge and McCarthy are co-authors of the book The Story of Life on Earth.

Their lecture with the topic “Trends in evolution and their bearing on the future of humankind” dealt with the future of evolution. According to Prof. Rubidge, ninety-nine percent of the species that have ever lived are extinct. “We are living in a time of mass extinction. Fifty thousand species become extinct annually,” he said.

Prof. McCarthy discussed many factors that can result in mankind’s extinction today. The impact of climate change, big volcanic eruptions, a comet or asteroid hitting earth, tsunamis and the collapsing of sea islands are some of the factors Prof. McCarthy believes could cause great catastrophe’s on earth.

“We live on the brink of this all the time,” he said.

Prof. McCarthy also believes that we can avoid these catastrophes. By allowing only one child per family we can shrink the global population with 30% per generation. This is doable in a short time span,” he said.

Other ideas he had on saving mankind from getting extinct is to create extensive ecological reserves on land but especially in the ocean, to decentralise everything, to change to renewable energy, to recycle resources and to be vigilant in doing this.

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