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25 August 2020 | Story Leonie Bolleurs | Photo Pixabay
Research-industry linkages for the promotion of biofortified maize and wheat, highlighted the link between research and industry.

Prof Maryke Labuschagne believes that research through collaboration can be to the benefit of the whole food chain, literally from laboratory to farm to fork. 

She is professor of Plant Sciences at the University of the Free State (UFS) and heads the SARChI Chair: Disease Resistance and Quality in Field Crops.

Prof Labuschagne recently delivered a presentation at a webinar organised by the International Maize and Wheat Improvement Center (CIMMYT) and the United States Agency for International Development (USAID). The focus was on Maize: Technologies, Development and Availability in South Asia. 

Her presentation: Research-industry linkages for the promotion of biofortified maize and wheat, highlighted the link between research and industry, stating that research outcomes should improve the livelihoods and health of people who grow and consume the food. 

Prof Labuschagne believes research by universities and research organisations can be linked to industry, with special reference to the development of biofortified crops. “Biofortification is the process where crop nutritional value is improved through genetic intervention,” she explains.

She states that the same technologies for crop biofortification can be applied throughout the world. 

In her presentation, Prof Labuschagne also reviewed the current technologies used, which include conventional genetic improvement and genetic engineering. Recently, the latter has been increasingly used for crop biofortification.

Enhancing nutritional value of crops

According to Prof Labuschagne, crop biofortification has developed exponentially in the last decade. Crop biofortification has been very successful in terms of improving the iron and zinc content, the provitamin A content, and the amounts of essential amino acids (lysine and tryptophan) in various staple foods.

“What we have learned is that genetic intervention in crop nutritional value is the best long-term solution to sustainably address vitamin and micronutrient deficiencies, especially in poor communities. It is a sustainable, and relatively cheap way to address mineral and vitamin deficiencies in the diets of people,” she says.

UFS research on biofortification

For a number of years now, a team of UFS scientists in the Division of Plant Breeding has been doing research on the biofortification of maize, sweet potatoes, bananas, and cassava. “The research took place in collaboration with a number of partners in Africa, and with funding from organisations such as the Bill and Melinda Gates Foundation.”

“This research has resulted in tangible outcomes, including the availability of seed and planting material of biofortified crops for farmers, who in turn make these crops available to consumers,” says Prof Labuschagne.

The crops not only add to the well-being of consumers, especially children and women, but also contribute to food security. 

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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