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06 December 2018 | Story Leonie Bolleurs | Photo Barend Nagel
Marcelle Vermeulen
Marcele Vermeulen, a graduate from the Department of Plant Sciences, explores possible threats to crop production; contributing to food security in South Africa.
Global food security is currently threatened both by climate change and the low diversity of crops relied on by humankind to feed a growing world population. Marcele Vermeulen, a graduate in the Department of Plant Sciences who will receive her PhD at the December graduation ceremonies at the University of the Free State (UFS), is part of a team that is working hard to add to the diversity of staple foods in South Africa.

In the drive to focus on alternative crops, Marcele is researching the crop, Amaranthus cruentus, (grain amaranth). It is more tolerant to environmental stress for large-scale production, thereby also diversifying staple crops.

Relatively new development

“Amaranthus cruentus is an excellent candidate due to its high nutritional value and tolerance to drought and high temperatures. It can be mixed with conventional maize meal, to increase the protein intake of its consumers,” said Marcele.

The production of A. cruentus as a grain crop in South Africa is a relatively new development.

In her research, exploring the possible threats to crop production and paying particular attention to dominant plant pathogens in the Amaranthus cruentus, Marcele found a correlation between fungal pathogens and insect pests. 

Insect pests can influence plant diseases

Although reports on fungal pathogens and pests specific to A. cruentus are limited to and information for South Africa is limited to this study, there is a possibility that by controlling insect pests such as weevils, one might also be able to control fungal pathogens of Amaranthus cruentus.

Marcele believes that control of weevil pests should thus be the focus of future pest and pathogen management strategies and breeding programmes in A. cruentus.  

“Knowledge gained in my thesis will hopefully aid in the development of future cultivation practices, integrated pest/pathogen management programmes, as well as for the registration of crop protection products for A. cruentus,” Marcele added.

Research Contributes to Food Security from University of the Free State on Vimeo.

News Archive

DiMTEC hosts second conference on disaster risk reduction
2009-06-02

 
Dr Anthony Turton, the Director: TouchStone Resources (Pty) Ltd. delivered the opening address at this year’s two-day annual international conference on disaster risk reduction that was presented by the Disaster Management Training and Education Centre for Africa (DiMTEC) at the University of the Free State (UFS).

In his presentation: Sitting on the horns of a dilemma: South Africa and its strategic water supply, he said: “We have simply reached the limit of the water resources in South Africa. On the one hand, we deal with the quantity dilemma in terms of strategic water storage. South Africa and Zimbabwe counts under the top 20 countries in the world in terms of dams built. We can only build about ten more dams.”

“On the other hand, we must deal with quantity. Previous solutions are not future solutions. When water is recycled, hormones such as oestrogen do not disappear. We must become creative and do something else,” he said.

“Science can make a difference. The UFS is well placed in terms of its groundwater research. Universities must invest in the necessary technology because the testing of toxins is essential. We must work in ways to prevent toxins from re-entering the water cycle,” he said.

A number of international speakers such as Dr Fabrice Renaud, Associate Director at the United Nations University’s Institute for Environment and Human Security (UNU-EHS) in Bonn, Germany, Dr Eugene Poolman, Chief Forecaster: Disaster Risk Reduction, South African Weather Service, and Prof. Rob Bragg from the Department of Microbial, Biochemical and Food Biotechnology at the UFS, attended the conference, as well as attendees from 11 different countries.

At the conference were, from the left: Mr Andries Jordaan, Director: DiMTEC at the UFS; Dr Ing Jörn Birkmann, Head of Section: Vulnerability Assessment at the United Nations University’s Institute for Environment and Human Security (UNU-EHS); Dr Anthony Turton, Director: TouchStone Resources (Pty) Ltd.; and Dr Fabrice Renaud, Associate Director: UNU-EHS.
Photo: Supplied

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