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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

Dr Abdon Atangana cements his research globally by solving fractional calculus problem
2014-12-03

 

Dr Abdon Atangana

To publish 29 papers in respected international journals – and all of that in one year – is no mean feat. Postdoctoral researcher Abdon Atangana at the Institute for Groundwater Studies at the University of the Free State (UFS) reached this mark by October 2014, shortly before his 29th birthday.

His latest paper, ‘Modelling the Advancement of the Impurities and the Melted Oxygen concentration within the Scope of Fractional Calculus’, has been accepted for publication by the International Journal of Non-Linear Mechanics.

In previously-published research he solved a problem in the field of fractional calculus by introducing a fractional derivative called ‘Beta-derivative’ and its anti-derivative called ‘Atangana-Beta integral’, thereby cementing his research in this field.

Dr Atangana, originally from Cameroon, received his PhD in Geohydrology at the UFS in 2013. His research interests include:
• the theory of fractional calculus;
• modelling real world problems with fractional order derivatives;
• applications of fractional calculus;
• analytical methods for partial differential equations;
• analytical methods for ordinary differential equations;
• numerical methods for partial and ordinary differential equations; and
• iterative methods and uncertainties modelling.

Dr Atangana says that, “Applied mathematics can be regarded as the bridge between theory and practice. The use of mathematical tools for solving real world problems is as old as creation itself. As written in the book Genesis ‘And God saw the light, that it was good; and divided the light from the darkness’, the word division appears here as the well-known method of separation of variables, this method is usually employed to solve a class of linear partial differential equations”.

“A mathematical model is a depiction of a system using mathematical concepts and language. The procedure of developing a mathematical model is termed mathematical modelling. Mathematical models are used not only in natural sciences, but also in social sciences such as economics, psychology, sociology and political sciences. These models help to explain systems and to study the effects of different components, and to make predictions about behaviours.”

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