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15 July 2020

The COVID-19 pandemic has exposed the fracture lines in societies worldwide. South Africa is no different. The poor are less able to protect themselves from the danger posed by the virus. Workers in factories, mines, and the service sector went back to their places of work following the lifting of the strictest lockdown measures, while office workers, typically better paid, can generally work from home. Living conditions in informal settlements make social distancing all but impossible, while the middle class can largely stay at home and stay safe to a much larger extent. With many businesses shutting down, downsizing or rethinking their business models, it is often small and medium, as well as informal sector businesses that are most affected.  

The impact of COVID-19 comes on the back of a society and economy that was already under significant pressure following years of low economic growth and poor government performance. Many commentators have already questioned the social compact South Africans made in the mid-1990s, which marked the end of the apartheid regime. These divisions have become more glaring, with some civil society organisations considering challenging the Minister of Finance’s adjustment budget in the Constitutional Court, because the budget might result in a roll-back of the progressive realisation of the socio-economic rights mandated in the Constitution.

In this first of four webinars, academics from the UFS as well as invited experts reflect on the constitutional commitment South Africans made to one another two and half decades ago. Is it time for a new deal? Should we collectively recommit ourselves to our existing deal? Do we interpret that deal in the same way today as we did more than two decades ago? How does the economic reality we face, particularly in the aftermath of the COVID-19 crisis, affect that deal? What are the economic realities we face, and whose are they? And how should we think about human development in the context of our deal? 

Come and join us from 14:00 to 15:30 on 21 July. 

RSVP to Sibongile Mlotya at MlotyaS@ufs.ac.za no later than 19 July, upon which you will receive a Business for Skype meeting invite.

Speakers:
Prof Danie Brand on ‘New deal’ or collective recommitment? The Constitution under COVID-19 and beyond

Prof Melanie Walker on Human development and the capability approach in COVID-19 times

Prof Lochner Marais on Reflections on continuities and discontinuities after COVID-19

Prof Philippe Burger on Viewing the realisation of socio-economic rights in a post-COVID-19 South Africa through an economic lens

 

Please also mark the following dates in your diaries for the second through fourth Reflection webinars:
Gender Inequalities and Gender-based Violence 28 July 14:00-15:30
The quality of our democracy under COVID-19 and beyond 13 August 14:00-15:30
Urban living post-COVID-19 27 August 14:00-15:30

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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