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18 November 2020 | Story Thabo Kessah | Photo Thabo Kessah
Prof Pearl Sithole acknowledged the role played by the Afromontane Research Unit in securing mountain-to-mountain research funding from the US Embassy and Consulates in SA.

“This launch is an opportunity to reflect on the strategic significance of the partnership between our two universities and the long-standing relationship that academics at the two institutions have enjoyed.” 

These were the words of appreciation from the University of the Free State Vice-Rector: Research, Innovation and Internationalisation, Prof Corli Witthuhn, during the virtual launch of the Mountain-to-Mountain collaboration project between the University of the Free State and the Appalachian State University in the United States held on 10 November 2020. The R8 million project is funded by the US Embassy and Consulates in South Africa and will run over two academic years.

Prof Witthuhn also stated that the project would further strengthen the UFS strategy for internationalisation. “This collaboration has grown organically in the last decade to become one of the UFS flagships in international collaborations. With the support of this grant from the US Embassy and Consulates in South Africa, this long-standing and sustainable collaboration will be further strengthened,” she added.

New master’s programmes

In providing context to the Qwaqwa Campus’ research footprint, Campus Vice-Principal: Academic and Research, Prof Pearl Sithole, acknowledged the role played by the Afromontane Research Unit (ARU) under the leadership of its Director, Dr Ralph Clark, as well as all the faculties.

“In the Humanities, a lot is coming regarding the socio-ecosystems of the mountains. And in Education and Economic and Management Sciences, the scholarship of teaching and learning is promoted through blended skills, especially during this time of the pandemic. In the Natural and Agricultural Sciences, climate monitoring is one of the projects that has brought vibrancy to our campus,” she said.

Appalachian State University’s Associate Vice-Chancellor for International Education and Development, Prof Jesse Lutabingwa, mentioned that the collaboration would, among others, develop and offer a multi-disciplinary master’s degree in Mountain Studies on the Qwaqwa Campus, which will initially enrol seven to ten students. “In the subsequent years, we plan to increase this number to 15-20 students. We will also develop and offer a Community Development master’s degree with 10-12 students and up to 25 in subsequent years.”

Black women academics

Prof Lutabingwa, who is also the Project Director, revealed that doctoral students who are currently part of the University Staff Doctoral Project (USDP), will conduct at least three research projects focusing on social entrepreneurship, substance abuse, and rural transport monitoring in the Maloti-Drakensberg Mountains. “Also key to this collaboration is the leadership mentorship programme for black women academics who will at the end of the project produce three to five research papers,” Prof Lutabingwa added.

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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