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14 April 2021 | Story Dr Chantell Witten | Photo Supplied
Dr Chantell Witten is from the Division of Health Professions Education.

A decade ago, Rob Nixon, a professor in the humanities and environment studies at Princeton University in the US, introduced the concept of slow violence in the context of climate change and environmentalism, explaining slow violence as violence that occurs gradually and out of sight, a violence of delayed destruction that is dispersed across time and space, an attritional violence that is typically not viewed as violence, at all. While profound, Professor Nixon’s concept of ”out-of-sight violence” and ”violence of delayed destruction” was challenged by Professor Thom Davies from the University of Nottingham in the UK who urged scholars to instead ask the question: ”out of sight to whom?” He argued that structural inequality mutated into noxious instances of immediate slow but pervasive violence by those who have endured toxic landscapes and unhealthy physical environments.

Reflecting on the impact of COVID-19 in the context of persistent hunger in South Africa’s cities, Dr Gareth Haysom from the University of Cape Town, challenged us as society to recognise the ”slow violence“ of hunger and food insecurity that are also often “experienced in private, incremental and accretive ways that are often invisible”. But as urged by Professor Davies, the question of child hunger and malnutrition in South Africa is really, to whom is this hunger and malnutrition invisible?

Malnutrition and its debilitating consequences have been studied and known about as far back as the 1950s. In 1976, Stoch and Smyth from the then Child Psychiatric Unit and Department of Paediatrics and Child Health at the University of Cape Town reported on a 15-year developmental study conducted from 1955 to 1970 on the effects of severe undernutrition during infancy on subsequent physical growth and intellectual functioning on coloured children from the Cape Flats concluded that the effects of severe undernutrition during infancy on subsequent brain growth and intellectual development confirmed gross retardation of intellect in the undernourished group when compared to the controls. Furthermore, the study concluded that given the abnormal performance of the control group that there was much evidence to suggest that the controls were also suboptimal in terms of nutritional status and intellectual functioning. This means that in general the nutritional status of coloured children on the Cape Flats was poor. Fast forward to 2021, and child nutrition in South Africa is still sub-optimal.

South Africa’s nutrition indicators have worsened

The most recent data from 2016 National Demographic Health Survey showed that 27% of children under the age of five years are stunted or too short for their age. This equates to more than 1.5 million children whose health and development is compromised and who have a lower chance of reaching their full potential even into their adult years. While many countries of the same economic development status have improved their nutrition indicators, South Africa’s nutrition indicators have worsened. South Africa has been identified as one of the countries with high levels of multiple forms of malnutrition manifested in high levels of stunting, childhood obesity and multiple micronutrient deficiencies, the most notable being vitamin A deficiency. These multiple forms of malnutrition cast a long shadow of ill-health and delayed development. of children, robbing them of quality of life and years of life in their childhood and their adult years. Malnutrition has a double cost on quality of life and additional health costs consuming resources that could have been spent on better food.

The right to have access to sufficient food is embedded in Section 26 and 27 of our Constitution and the right to adequate nutrition for children is stipulated in section 28. The Bill of Rights enshrined in the Constitution states that “every citizen has a right to have access to sufficient food, water and social security” and that “the State must take reasonable legislative and other measures, within its available resources, to achieve the progressive realisation of this right”. Before the onslaught of COVID-19, we as health and social care professionals, have been acutely aware that a significant number of South Africans do not have access to sufficient food and go hungry on a daily basis. Malnutrition is well-documented in South Africa and unfortunately is progressively getting worse.

SA has not prioritised children or the realisation of their human rights to food and nutrition

Better nutrition can only be achieved when food and care are available to young children but in the context of rising food prices, limited maternal support and a difficult psychosocial environment, mothers are not able to provide their children with a health-enabling environment. Our high levels of stunting and obesity levels reflect the chronic situation of poor-quality and inadequate diets coupled with poor caring practices. While these poor dietary practices are often individualised and focused on mothers, there are many systemic and structural barriers for families to access affordable and nutritious diets. The food environment is shaped by a profit-centred food system that comes at the cost of people’s health and well-being. Children have always being the prime focus of the food industry, from the promotion of maternal supplements to improved maternal nutrition for the developing foetus, to the promotion of infant formula as a convenient and easy-to-use alternative to breastfeeding, to the manipulative marketing of foods for and to children.

Child nutrition has become a global tracking indicator for both human and economic development. Sadly, our lack of progress over the past 20 years clearly illustrates that we, as a country, have not prioritised children or the realisation of their human rights to food and nutrition. The findings of the 2020 Child Gauge gives us, as a country, the opportunity to stop the violations of children’s rights and to end the slow violence of child malnutrition.

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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