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02 June 2022 | Story Leonie Bolleurs | Photo Supplied
Walter van Niekerk_
If you are so focused on achieving only certain goals in your life, you might miss the best opportunities, believes Dr Walter van Niekerk, who recently received his PhD in Agricultural Economics.

Being relevant in a constantly changing agricultural environment. This is one of Dr Walter van Niekerk’s biggest motivations in his working life. The place where he believes he will be able to do just that, is the University of the Free State (UFS). “The university was the best plan for my life,” he says. 

Whether it is in research or in learning and teaching, Dr Van Niekerk, Lecturer in the UFS Department of Agricultural Economics, believes that with a positive attitude and the ability to be adaptable to change, one will be able to make the most of any opportunity crossing your path. If you give 110% every day, you will be ready for any possibility. He is lecturing Agricultural Finance and Agri-business Management, focusing on agricultural business plans, to first- and third-year students, respectively. 

Contribute to findings on predation management

At the recent April graduation ceremonies, he was awarded his PhD. The title of his thesis was: An estimation of the downstream economic implications of predation in the South African red meat industry.

In his thesis, he outlined the economic impact of predation in the livestock sector and red meat industry. He believes the significant damage caused by predators cannot be controlled by man-made borders. “There is a reason for these animals' existence; they just need to be managed properly at national level by government,” he says.

The aim of his study was to contribute to and combine any findings on the predation problem, and to put these findings on a macroeconomic platform to inform government of the extent of this problem in order for them to develop strategies, policies, and mitigation methods to reduce predation and lessen the impact thereof.

Thus far, excerpts from his thesis have also been published as two articles in peer-reviewed scientific journals – a peer-reviewed journal of the National Museum, Indago, as well as the journal, Frontiers in Sustainable Supply Chain Management.

With predation being a constant point of discussion at agricultural associations’ monthly meetings, he believes that the research topic he has selected for his PhD is relevant and that the outcomes of his study will be able to make a difference in the agriculture sector. His work is more than just theory. He identified a problem – the damage that predation does to the red meat industry – and found a practical solution to it.  

Students staying relevant in a fast-changing environment 

Besides the possible impact he will have on the red meat industry, the PhD was also a means to an end – to develop himself as an agricultural economist in order to become an industry expert in his field.

He also takes his role as lecturer very seriously. It is important to him that his students, once they have completed their studies, must have an actual understanding of the field and that they must be able to stay relevant in a fast-changing environment by practically applying what they have learnt. 

In his free time, Dr Van Niekerk enjoys applying his knowledge. Besides his consultancy work with farmers, he also serves on Free State Agriculture’s Young Farmer Committee, and he is a technical adviser to the National Lucerne Trust (NLT), assisting them with their grading processes to ensure that their quality system is free of any irregularities, and that they stay relevant in the industry. 

News Archive

NRF grants of millions for Kovsie professors
2013-05-20

 

Prof Martin Ntwaeaborwa (left) and Prof Bennie Viljoen
20 May 2013


Two professors received research grants from the National Research Foundation (NRF). The money will be used for the purchase of equipment to add more value to their research and take the university further in specific research fields.

Prof Martin Ntwaeaborwa from the Department of Physics has received a R10 million award, following a successful application to the National Nanotechnology Equipment Programme (NNEP) of the NRF for a high-resolution field emission scanning electron microscope (SEM) with integrated cathodoluminescence (CL) and energy dispersive X-ray spectrometers (EDS).

Prof Bennie Viljoen from the Department of Microbial, Biochemical and Food Biotechnology has also been awarded R1,171 million, following a successful application to the Research Infrastructure Support Programme (RISP) for the purchase of a LECO CHN628 Series Elemental Analyser with a Sulphur add-on module.

Prof Ntwaeaborwa says the SEM-CL-EDS’ state-of-the art equipment combines three different techniques in one and it is capable of analysing a variety of materials ranging from bulk to individual nanoparticles. This combination is the first of its kind in Africa. This equipment is specifically designed for nanotechnology and can analyse particles as small as 5nm in diameter, a scale which the old tungsten SEM at the Centre of Microscopy cannot achieve.

The equipment will be used to simultaneously analyse the shapes and sizes of submicron particles, chemical composition and cathodoluminescence properties of materials. The SEM-CL-EDS is a multi-user facility and it will be used for multi- and interdisciplinary research involving physics, chemistry, materials science, life sciences and geological sciences. It will be housed at the Centre of Microscopy.
“I have no doubt that this equipment is going to give our university a great leap forward in research in the fields of electron microscopy and cathodoluminescence,” Prof Ntwaeaborwa said.

Prof Viljoen says the analyser is used to determine nitrogen, carbon/nitrogen, and carbon/hydrogen/nitrogen in organic matrices. The instrument utilises a combustion technique and provides a result within 4,5 minutes for all the elements being determined. In addition to the above, the machine also offers a sulphur add-on module which provides sulphur analysis for any element combination. The CHN 628 S module is specifically designed to determine the sulphur content in a wide variety of organic materials such as coal and fuel oils, as well as some inorganic materials such as soil, cement and limestone.

The necessity of environmental protection has stimulated the development of various methods, allowing the determination of different pollutants in the natural environment, including methods for determining inorganic nitrogen ions, carbon and sulphur. Many of the methods used so far have proven insufficiently sensitive, selective or inaccurate. The availability of the LECO analyser in a research programme on environmental pollution/ food security will facilitate accurate and rapid quantification of these elements. Ions in water, waste water, air, food products and other complex matrix samples have become a major problem and studies are showing that these pollutants are likely to cause severe declines in native plant communities and eventually food security.

“With the addition of the analyser, we will be able to identify these polluted areas, including air, water and land pollution, in an attempt to enhance food security,” Viljoen said. “Excess levels of nitrogen and phosphorous wreaking havoc on human health and food security, will be investigated.”

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