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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

Workplace bullying can cause a toxic teaching environment
2014-04-15

A study done by the University of the Free State’s Faculty of Education exposed how teachers in South Africa fall victim to bullying in the workplace on a daily basis.

This study by Prof Corene de Wet from our School of Open Learning and Dr Lynette Jacobs from our School of Education Studies, exposed the commonness of workplace bullying (WPB) among teachers.

More than 2 700 teachers, from all school levels in urban, township, informal settlements, rural and farm schools, took part in a 43-question survey. Teachers from eight provinces were included in the study.

About 90% of the respondents were victims of WPB by school colleagues and/or management during the 12 months that preceded the study.

These acts included direct shunning, having untrue things said about them, verbal abuse, threats and ridicule, insults and teasing, damaging of possessions as well as physical violence.

Dr Jacobs says WPB is an extremely serious problem in some South African schools, compared to the occurrence in other countries.

“South African teachers are working in ‘toxic’ environments characterised by disgruntled, overworked and stressed teachers. There often are high levels of learner-on-learner and learner-on-educator violence and bullying, communities fraught with moral degradation, racial conflict, violence, lawlessness and economic despair. In schools where despair and disrespect prevail, teachers often turn on one another,” she says.

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