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26 May 2020 | Story Marcus Maphile | Photo Supplied
Marcus Maphile

The African continent is known for endless wars, extreme poverty, under-development, and highly contested borders left by the legacy of colonialism. Low levels of literacy among young people and adults remain a concern in many African states. African universities are slowly beginning to play a significant role in contributing to national innovation systems that seek to change the socio-economic and other fortunes of many poor and marginalised Africans. 

The African continent celebrates the 57th anniversary of the founding of the Organisation of African Unity (OAU), and the relevance of the current African Union (AU) in the fight against socio-economic challenges caused by COVID-19 on the continent. The fear faced by most African countries emanates from inadequate healthcare systems and facilities. The debate on the opening of schools and institutions of higher learning is passed around like a soccer ball, as countries are aware that they lack the capacity to accommodate a surge of COVID-19 infections.

The African higher education and research sector is struggling to adapt. Will they be able to play a significant role towards finding a vaccine, producing new knowledge or research from African indigenous plants?  To be factual, in many ways this is not likely to happen, as most of the higher education institutions struggle with internet connectivity and high data costs. Many books and journals in libraries remain inaccessible, and most will only later record how developed countries moved to online teaching and learning with great success or failure.   All this will happen under the noses of illiterate Africans who rightly expect their higher education and research institutions to contribute towards finding immediate responses to the COVID-19 pandemic threat.

Most public and academic libraries remain closed and there is no word and contribution from highly decorated professionals towards sustaining reading habits and availing relevant materials for research towards finding a vaccine. There is no co-ordinated plan from library ministries and or library lobby groups. This is the context in which Africa Month 2020 is celebrated. It will be remembered as the year in which the promotion of reading and the opening of schools took a beating.

Marcus Maphile is Assistant Director: Library Marketing at the University of the Free State and he writes in his personal capacity.

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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