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18 June 2020 | Story Nitha Ramnath | Photo Supplied
Mischke Bouwer.

Mischke Bouwer was recently awarded a Fulbright scholarship to study her PhD in Geoscience at the Southern Illinois University (SIU). The duration of the programme at SIU is five years, starting in August 2020.

Fulbright is a scholarship programme that recruits students from all over the world in any field of study to do their postgraduate studies in America. This is done through funding from Fulbright, together with the country's government and American universities. 

“This is not only a funding scholarship, but a supportive community! It really does feel like teamwork so far. The people from Fulbright ensure that the students feel as comfortable and enlightened as possible when leaving the country, and I am sure it will be the same when I arrive in America,” says Mischke.

Mischke considers herself an average girl who grew up in Pretoria; she enrolled at the UFS for a BSc in Geology from 2014 to 2016, followed by an Honours in Geology in 2017, and MSc in Soil Science. 
“I took a big chance by applying for a Fulbright scholarship but did not expect anything, as I felt I would never be good enough – but look where I am now,” says Mischke.

“I am speechless about the scholarship I received. There are many people I would like to thank who helped me along the way to achieve this scholarship. I would love this opportunity to thank all my lecturers from the UFS, both in the departments of Geology and Soil Science. Thanks to my supervisors for always believing in me. A special thanks to Prof Cornie van Huyssteen who was fully behind me, impacting my way of thinking, and teaching me a lot in two years.”

Mischke dedicates this scholarship to the late Prof Marian Tredoux, a true scientist and lecturer in the Department of Geology, who not only contributed greatly to the sciences, but truly impacted her students. “She inspired me to work hard and showed me an example of what a woman in science could be,” says Mischke.

She encourages students to apply for this scholarship, adding that there is nothing to lose. According to Mischke, students are much smarter than they would like to believe and should therefore always be mindful that their future is way brighter than they think.

“Make your role model YOU in 10 years and keep it that way! This way you always have someone to strive for!” says Mischke.

Mischke works on the absorption potential of arsenic and selenium in the field of environmental geochemistry and geochemical modelling. She hopes to return to South Africa with this knowledge and to make a difference in the remediation and rehabilitation of mines. 

News Archive

Research helps farmers save with irrigation
2017-02-15

Description: Irrigation research Tags: Irrigation research

Marcill Venter, lecturer in the Department of
Agricultural Economics at the University of the
Free State, has developed the mathematical
programming system, Soil Water Irrigation
Planning and Energy Management in order to
determine irrigation pump hours.
Photo: Rulanzen Martin

Her advice to farmers is that they should make sure they are aware of the total cost (investment and operating costs) of an irrigation system. In most cases the investment cost is low, but the operating cost over the lifetime of the system is high.

“It is very important to have a look at the total cost and to install the most economic system,” says Marcill Venter, lecturer at the University of the Free State (UFS), who has done research on the economic sustainability of water-pipe systems.

Irrigation systems important components for farming
This research comes at a time when many farmers are relying on their irrigation systems due to persistent drought and low rainfall during 2016. South Africa has also experienced an abnormal increase in electricity tariffs in recent years. Due to tariff increases which threaten the future profitability of irrigation producers, the Water Research Commission (WRC) has launched and financed a project on the sustainable management of irrigation farming systems. “I had the opportunity to work on the project as a researcher,” says Venter.

The heart of every irrigation system is the water pipes that bring life to crops and livestock, and this is what Venter’s research is about. “Water pipes are part of the whole design of irrigation systems. The design of the system impact certain factors which determine the investment and operating costs,” she says.

Mathematical system to help farmers
Venter and Professor Bennie Grové, also from the Department of Agricultural Economics at the UFS, designed the Soil Water Irrigation Planning and Energy Management (SWIP-E) programming model as part of the WRC’s project, as well as for her master’s degree. “The model determines irrigation pump hours through a daily groundwater budget, while also taking into account the time-of-use electricity tariff structure and change in kilowatt requirements arising from the main-line design,” says Venter. The model is a non-linear programming model programmed in General Algebraic Modeling System (GAMS).

Design of irrigation system important for sustainability

The main outcome of the study is that the time-of-use electricity tariff structure (Ruraflex) is always more profitable than the flat-rate structure (Landrate). The interaction between the management and design of a system is crucial, as it determines the investment and operating costs. Irrigation designers should take the investment and operating cost of a system into account during the design process. The standards set by the South African Irrigation Institute (SAII) should also be controlled and revised.

Water-pipe thickness plays major role in cost cuts
There is interaction between water-pipe thickness, investment and operating costs. When thinner water pipes are installed, it increases the friction in the system as well as the kilowatt usage. A high kilowatt increases the operating cost, but the use of thinner water pipes lowers the investment cost. Thicker water pipes therefore lower the friction and the kilowatt requirements, which leads to lower operating costs, but thicker pipes have a higher investment cost. “It is thus crucial to look at the total cost (operating and investment cost) when investing in a new system. Farmers should invest in the system with the lowest total cost,” says Venter.

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