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13 August 2018 Photo Charl Devenish
Mountain research Maloti-Drakensberg
Tucked in the foothills of the Maloti-Drakensberg Mountains is the Qwaqwa Campus of the University of the Free State (UFS), the home of the Afromontane Research Unit (ARU).

Mountains and highlands have always played an important role in the history of mankind. They produce economically essential goods and services (such as fresh water), host unique biodiversity, and offer unique recreational and tourism opportunities. Mountains are also a place for spiritual sanctuaries and are often used for journeys of self-reflection through pilgrimage.

In addition to these ‘feel good’ benefits, mountains are hazardous areas for communities and infrastructure and are vulnerable to natural disasters. Mountainous areas are also often natural borders defining geopolitical entities, but in the process splitting and marginalising communities, creating economic shadow zones and sometimes becoming highly militarised areas. 

“Southern African mountains provide enormous opportunities for holistic research as social-ecological systems, with some of the most interesting and least academically explored environments on Earth,” said Dr Vincent Clark, Director: Afromontane Research Unit (ARU) on the UFS Qwaqwa Campus

The Afromontane Research Unit
The Qwaqwa Campus of the University of the Free State (UFS) is the home of the ARU, a multidisciplinary flagship group addressing the largely under-researched mountainous landscapes of southern Africa. 

Research in the ARU is promoted around three broad themes to foster inter- and multidisciplinary discourse: (1) conservation and sustainable use of Afromontane biodiversity; (2) sustainable futures for the people of the Afromontane; and (3) living and doing business in the Afromontane –  with the intention of creating a sustainability science hub to bring the three themes into the ambit of solution-oriented transdisciplinary research, centred in the sustainable development goals and sustainability research in general. 

Continental leader
To achieve its vision of becoming a continental leader in African mountain research, the ARU is positioning itself as a mountain-knowledge generator and interchange by developing key relationships locally and internationally. The most valuable local partnership is with the South African Environmental Observation Network (SAEON), with which the ARU will be sharing a Research Chair. 

The Chair will contain strong expertise in the Social Sciences to complement the existing strong Natural Science element in both the ARU and SAEON. The Sustainability Science component is being built through inter alia a mutually-reinforcing relationship with the University of Tokyo and United Nations University, Tokyo. 

The future
“In tandem with robust collaborations to achieve its goals, the ARU provides an envious capacity-building programme for its early career campus academics, postdoctoral and postgraduate students,” said Dr Clark. 

The scale of influence of the ARU is prioritised as ‘back yard first’, namely solution-oriented research that benefits Phuthaditjhaba, Qwaqwa, Golden Gate Highlands National Park and Royal Natal National Park. Thereafter, the ARU seeks to facilitate research that encourages the sustainable development of the Maloti-Drakensberg as a unique social-ecological system in Africa, and from there facilitate research in the intellectual vacuum that is the southern African mountains. With time, the ARU aims to take the intellectual lead as an Africa-based leader in African mountain research. The success of this will depend on how carefully the development of human infrastructure can be balanced with that of the myriad opportunities presented.”

With a diverse and motivated team, situated in one of the most attractive environments in Africa, the ARU is here to change the way we think about African mountains and what they mean for us all. 

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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