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23 May 2018 Photo Thabo Kessah
Choose excellence and moral uprightness graduates told
Dr Mantwa Lephoto graduated with a PhD in Physics. With her is Dr Kamohelo Tshabalala, her supervisor

It was joy all over at the Qwaqwa Campus of the University of the Free State (UFS) on Thursday 10 May 2018 when over 650 degrees, diplomas, and certificates were conferred on deserving academic achievers. Among the degrees conferred were seven PhDs and seven master’s degrees in the Faculty of Natural and Agricultural Sciences, and one doctorate in English in the Faculty of the Humanities.

Speaking to the proud graduates was the Honourable Acting Judge of the Supreme Court of Appeal, Mr Justice Tati Makgoka, and the Chancellor of the UFS, Dr Khotso Mokhele, who both congratulated the graduates on their success.

Immeasurable joy and pride
“In African culture, a child is a vessel of the community. And today you have not only brought immeasurable joy to your families, but also pride to your communities. You have also opened a window of opportunities and inspiration to the school learners in attendance here today,” said Justice Makgoka, referring to hundreds of invited school learners from as far as Rekgotsofetse Secondary School in Paul Roux.

“You have now assumed the roles of pathfinders among your people. You should therefore continue to share your talents, as well as moral and spiritual gifts, with your communities. Your qualifications today set you on a journey of lifelong learning and scholarship. It is so because your chosen fields of study are dynamic terrains constantly evolving and demanding a lifelong scholarship. We must also pay special tribute to those who contributed towards your success,” he said.

Support system is important

Dr Mokhele also encouraged graduates to thank their support systems that kept them going through the hard times of studying.

 “There are many other people who deserve to be thanked for your success and you must thank them accordingly,” he said, and asked graduates to stand up as a gesture of appreciation for their families and friends who filled up the Rolihlahla Mandela Hall.
He further edged all graduates to ‘choose excellence and moral uprightness’.

“Honest and excellent hard workers in our government are more likely to be constructively dismissed, as they prevent the stealing of state resources. It’s your responsibility to choose the kind of South Africa you want to live in and make it happen,” he said.
 
This year’s graduations also saw the first cohort of Bachelor of Administration students from the Faculty of Economic and Management Sciences graduating.

UFS Qwaqwa Campus May Graduation highlights from University of the Free State on Vimeo.

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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