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12 March 2019 | Story Eugene Seegers | Photo Eugene Seegers
Leading women honoured at faculty opening
Rev Martin Laubscher pictured with Thandeka Khulu, Oarabetse Morokane, Lunette Visser, and Trunette Sevenster, who participated in the worship service.

At its recent opening, the Faculty of Theology and Religion conferred the inaugural Letsema Award on Dr Ellen Vuyiswa Blekie, a medical doctor known for her sterling work in her local community in Thaba Nchu, as well as on the various church councils and committees on which she still serves at the age of 87. Dr Gideon van der Watt, director of the “Partners in Mission” unit of the Dutch Reformed Church in the Free State, presented the award to Dr Blekie on behalf of the faculty.

The theme of the morning’s proceedings was: The church and violence against women and children. This theme was not only borne out by the worship service presented by Rev Martin Laubscher, but also by each of his participants. First, a popular song from 1987, My Name is Luka, by Suzanne Vega, was recited in spoken-word form. The song deals with themes of physical and emotional abuse, as well as being kept silent as a victim. Next, the Paulette Kelly poem I Got Flowers Today was recited. The final stanza begins with the words “I got flowers today.../Today was a special day — it was the day of my funeral...”

Dr Carin van Schalkwyk, who has been serving the Philippolis community and congregation since 1993, conducted the liturgy. Her chosen passage was 2 Samuel 13, which recounts the events leading up to King David’s son Amnon raping his half-sister Tamar and the subsequent cover-up by the king and his sons. Dr Van Schalkwyk likened the way David of old handled the situation to the modern church’s failure regarding the protection of women and children, stating these vulnerable ones have been failed miserably.

Dr Van Schalkwyk added: “The root of the problem has not been addressed. It requires a rethinking of both preaching and policy, even of theology. All are created in God’s image; what does that mean?”

Concluding, she said, “We need to hear the lament of those affected, and weep with them. I dream of a day when women do not have to think of how to avoid sexual harassment on a daily basis.”


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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