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09 May 2020

Dear Students

UPDATE ON DEVELOPMENTS AT THE UFS

I hope you are well, healthy, and safe. I also hope that you are engaging with your friends and lecturers regularly, and that you have settled into the online learning environment. As with communities around the world – including higher education institutions – Kovsies also feel the impact of the exceptional circumstances resulting from the global COVID-19 outbreak. So much has changed, and our lives are directly and indirectly affected. It is a true test of our resilience and ability to adapt to a changing environment.

I know that it has not always been easy for you – none of us were prepared for a global pandemic of this magnitude. But I also see this as an opportunity for us to develop our learning and teaching model and to find ways of further enhancing the university’s processes and systems.

The suspension of the academic programme and the national lockdown had a huge effect on our staff and students. We had to act fast to ensure the continuation of the 2020 academic programme. Our first priority was to develop low-tech online and distance approaches to learning and teaching. Consequently, we developed support for academic staff and students to navigate the new online learning environment. We also revised our academic calendar and rolled out a carefully planned emergency remote teaching and learning methodology.

It is encouraging to know that you began with online learning this week. Early indications are that the Transition and Orientation from 20 to 30 April 2020 worked well in preparing you for the online learning that started on 4 May 2020. It is also good to know that the #UFSLearnOn material helped you to get ready for the start of online academic activities. Be assured that your lecturers are working hard to deliver a quality teaching and learning experience in the current circumstances. Just as this is a new experience for you, it is also a new learning experience for your lecturers. You may still experience some challenges with your academics as we complete the first week of online learning. Please contact your lecturers and/or faculties so that we can find solutions for you. You can also visit the Digital Life Portal (under the Student Toolbox) on the KovsieLife website.

You have been away from your lecturers, friends, familiar surroundings, and campus facilities for a long time, and I know that you miss it. Unfortunately, the university is bound by Level 4 restrictions and it is not possible to allow any students back on our campuses until so directed by the national government. Only final-year MB ChB students are allowed to return to campus next week – as per the directive from the national government. The majority of staff are also working from home until otherwise indicated, and in accordance with national directives for the further easing of lockdown restrictions.

This is not a university decision but is prescribed in terms of national regulations. Be assured that the university has taken adequate measures to ensure the safety of all facilities, assets, and private belongings on the campuses. We will let you know as soon as we receive a directive that students may be allowed on campus – this will be done in a phased approach in order to contain the spread of COVID-19.

Your safety, health, and well-being remain our first priority. Look after yourself and your mental health – make use of the #WellnessWarriors campaign of our Department of Student Counselling and Development that is aimed at encouraging health and well-being among students.

Please remember to regularly check the official communication platforms to stay up to date with developments at the university. Avoid fake news, verify information, and only consult the official communication platforms. 

Obeying the lockdown restrictions is an act of kindness to yourself and to others; #StayAtHome and practise social distancing.

I wish you all the best with your studies and hope to see you on our campuses soon.


Best regards

Prof Francis Petersen
Rector and Vice-Chancellor


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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