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20 March 2018 Photo Pexels
Water footprint important but misunderstood indicator
Water footprinting is the future of water conservation

The Water Footprint (WF) of a product, process or person provides an indication of how much fresh water is used, both direct and indirect, to produce a product, drive the process or lead a lifestyle. Although it is a very important indicator it is often misunderstood. Popular media contribute to this misunderstanding as they often use the WF to illustrate the large quantities of water used to produce a product without explaining what the footprint actually means.  

An example is a single kilogram of beef that has an average global WF 15 415 litres. This indeed sounds scary, but when one places it in context, the total WF includes 14 414 litres green water, 550 litres blue water and 451 litres grey water. Green water is the evapotranspiration of precipitation (rain), blue water is the fresh water from dams, rivers and underground sources, while grey water is the amount of fresh water required to dilute polluted water to acceptable levels.

According to Frikkie Maré, a lecturer at the Department of Agricultural Economics at the University of the Free State (UFS), the WF concept provides a new look at water conservation and sustainability. “Although the WF is not an indicator of sustainable water use, it is a useful tool to calculate total water demand and is used in the estimation of sustainability. Traditionally, water conservation was focused on the direct water use of individuals (time taken to shower, leaking taps etc.), but the WF now provides a tool to focus attention on total water demand.”

The Water Footprint Network assists individuals with this new trajectory on the water conservation front with the personal water footprint calculator that allows individuals globally to determine their personal water demand through their direct and indirect water usage. Maré believes this can cause the necessary paradigm shift in the aqua status quo by creating awareness among consumers on their total water demand.

With Water Week underway from 17-23 March 2018, UFS students and staff members are urged to make use of the personal water footprint calculator in order to become aware of the real importance of fresh water in our everyday lives.

News Archive

Maize breeder rewarded for his research to enhance food security in Africa
2016-08-26

Description: Maize breeder rewarded  Tags: Maize breeder rewarded

Prof Maryke Labuschagne from the UFS Department
of Plant Sciences, Berhanu Tadesse Ertiro, a
postgraduate student in Plant breeding at the UFS,
and Dr Peg Redinbaugh of the US Department of
Agriculture in Wooster, Ohio.
Photo: Supplied

Ethiopia is one of the African countries, deeply affected by food insecurity. Berhanu Tadesse Ertiro, a citizen from Ethiopia started his career - after graduating with his undergraduate degree in 2003 - as a junior maize breeder. Today he is pursuing his doctorate degree in Plant Breeding at the University of the Free State (UFS).

His research had made some great strides in contributing to food security in Africa. He recently received a fellowship from the prestigious Norman E. Borlaug Leadership Enhancement in Agriculture Program (Borlaug LEAP).

This fellowship is only awarded to students whose research has relevance to the national development of the student’s home country or region. The aim of these fellowships are to enhance the quality of thesis research of graduate students from developing countries who show strong promise as leaders in the field of agriculture and related disciplines.

Low soil fertility a major maize production constraint
Berhanu is also a visiting student at the International Maize and Wheat Improvement Center (CIMMYT) in Kenya, where he is running field experiments for his PhD thesis dissertation. His research focuses on Nitrogen Use Efficiency (NUE) and Maize Lethal Necrosis (MLN) disease tolerance. Low soil fertility and MLN are among the major maize production constraints in eastern and southern Africa, where maize is staple food.

Such hybrids have the potential to contribute greatly
towards food security among farmers and their
families through increased productivity.

The use of new tools could increase breeding efficiency and reduce the time needed for the release of new stress tolerant hybrids. Such hybrids have the potential to contribute greatly towards food security among farmers and their families through increased productivity. Berhanu is looking at the feasibility of genome wide selection for improvement of NUE in tropical maize.

Fellowship includes mentorship and supervision across borders
The programme supports engaging a mentor at a United States university and Consortium of International Agricultural Research Centers (CGIAR). During his fellowship, he will be supervised and mentored by Prof Maryke Labuschagne of the UFS, Prof Rex Bernando, a professor of Corn Breeding and Genetics at the University of Minnesota and Dr Biswanath Das of CIMMYT, Kenya.

As a LEAP fellow, Berhanu was invited to attend the 30th Annual World Food Prize events to take place in October 2016, in Des Moines, Iowa. The week will include his attendance at the Board for International Food and Agricultural Development meeting, participation at side-events at the Borlaug Dialogue International Symposium and the World Food Prize.

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