Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
12 July 2019 | Story Ruan Bruwer | Photo Tania Allen
Tanya von Berg
Tanya von Berg has represented the UFS netball team with distinction over seven years, winning three Varsity Netball titles and one USSA crown.

Although she did not quite reach her final goal in a Kovsie netball dress, being honoured one last time brought much peace to Tanya von Berg.

She was named in the Dream Team at the conclusion of the University Sport South Africa (USSA) tournament in Johannesburg and was thus recognised as the best centre at the competition.

According to the stalwart who played in her seventh year for the University of the Free State, her goal was to make this team and lift the trophy. The team didn’t succeed in the latter, losing to the North-West University in the semi-final.

Heading abroad
“Knowing that it would be the last time I would be playing for the team, I set myself these two goals. Although we were not able to claim the title, at least making the Dream Team helped to make me feel that I finished on a high, giving my all one last time,” she said.

Von Berg, who is doing her honours in Education this year, received a teaching post in Qatar, where she will start in August.

Remarkably this versatile player, who could play any one of four positions, only missed two matches in the two student competitions since making her debut as a first-year student in 2013. This was due to national commitments in 2016 (playing for South Africa A) and her honeymoon last year.

Standout moments
“Being named for the Protea training squad in 2016 and being selected for the national Fast5 team later that year, was the two outstanding moments of my career.”
“What I remember about my first year, was how huge it was to play with the seniors. The one player who served as my biggest inspiration, was Isélma Parkin. She didn’t receive the recognition she deserved. I learned from her to continue to work hard and to never give up.”


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.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept