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19 July 2021

The Faculty of Economic and Management Sciences invites all its academic departments to participate in the 2021 celebration of Nelson Mandela Day by requesting their staff and students to become involved in a 67-minute fitness challenge to be held over a seven-day period, commencing on 18 July 2021. These kilometres can be completed by running, walking, swimming or on a bicycle (no vehicles permitted). 

These activities may be completed at any location, at any time from 18 to 25 July 2021 (terminating at midnight on 25 July). This ensures that social distancing protocols are adhered to, since each individual is completing the challenge on their own.

Participants will be required to provide relevant proof of the distance completed, as well as the date and time interval, by either submitting a picture of the treadmill screen, sharing the progress they logged by using a mobile app such as Strata, pictures of the number of steps completed, etc. (Send this via email to Reabetswe Parkies at Parkiesrg@ufs.ac.za upon completion – at the latest by 08:00 on 26 July 2021.)

Raising funds

To raise funds, each department in the faculty is requested to consider sponsoring a specific amount per kilometre completed by their staff and students. It is recommended that each department consider its available budget for this purpose and that the total departmental contribution should be capped at a specific amount to ensure that departments are not faced with open-ended liabilities.  We have sought and obtained approval from the Department of Finance for the use of UFS funds in this manner. To this end, for example, the School of Accountancy has pledged to contribute R10 per kilometre completed, capped at a maximum contribution of R6 700.

To encourage healthy competition and to increase the amount raised, departments will be encouraged to compete against each other and attempt to complete the most kilometres. Each department will donate their pledges to the charity of their choice.  In support of this noble cause, the Dean’s office has pledged a donation of R6 700 to the winning academic department, to be added to the department’s donation to the charity. 

We believe this is a very good marketing initiative, as well as an opportunity for the faculty to illustrate its commitment to social investment and community engagement.  It is also likely to contribute to improving the morale of the staff in the faculty. The UFS Community Engagement office has further indicated that it would like to arrange a radio interview to promote this event – to this end, we can raise awareness and place the spotlight on a worthy cause.

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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