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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

Kovsie archer aims for 2016 Olympics
2014-04-24


Sariça Coetzee

For some of us, archery is just something we see on film and television, like in the Hunger Games movies or on the Arrow TV series. Sariça Coetzee, a first-year BA Psychology and Criminology student, however, is almost like South Africa’s very own Katniss Everdeen.

Sariça recently won two gold medals in the division for Junior Women at the South African National Archery Association’s (SANAA’s) National Archery Championships. With the qualifying heats taking place next year, the Olympic Games of 2016, which is just around the corner, is beckoning her.

“I am working hard to get there and would love to go,” says Sariça.

“I train on a regular basis with Riaan Schoeman from Kovsies’ Exercise and Sport Sciences, in order to improve my technique and strength.”

Sariça’s training includes shooting at targets and spending time in the gym.

“I spend about three hours per day, four days a week, on training. In archery it is crucial to be able to keep your body stable when the wind is blowing.”

Sariça, who matriculated at Sentraal High School in Bloemfontein, stared with archery seven years ago.

“We drove past Old Grey’s archery club and I just wanted to do it as well,” she says.

“I begged my parents for almost a year to let me do it. They thought it was just a passing fancy, but I really developed a passion for the sport and had a feeling for archery from the beginning.”

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