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25 March 2025 | Story Andre Damons | Photo Andre Damons
Dr Gerard Verhoef
Dr Gerard Verhoef, an intellectual property (IP) commercialisation specialist at Barnard Incorporated Attorneys, gave an oral presentation at the second Southern African Mountain Conference.

South Africa is neglecting and overlooking the economic potential of Aloe ferox, forfeiting millions in potential revenue from this ‘green gold’. In doing so, the country is denying farmers and communities the chance to prosper from the land’s true bounty and is also undermining its biodiversity.

While South Africa harvests a mere 200 tons of Aloe ferox annually, its global competitors, such as Mexico, churn out a staggering 400 000 tons of Aloe vera, says Dr Gerard Verhoef, an intellectual property (IP) commercialisation specialist at Barnard Incorporated Attorneys. He gave an oral presentation titled IKS, the public domain and Biotrade during a session on Mountain People's Livelihoods at the second Southern African Mountain Conference (SAMC2025).

Researchers, policy makers, and practitioners from across Southern Africa and beyond came together from 17 to 20 March at the scenic Champagne Sports Resort in the central Maluti-Drakensberg for SAMC2025 themed ‘Overcoming Boundaries and Barriers’.

The next rooibos

SAMC2025, under the patronage of UNESCO and organised by the University of the Free State (UFS) Afromontane Research Unit (ARU) – in partnership with the African Mountain Research Foundation (AMRF) and the Global Mountain Safeguard Research Programme (GLOMOS) – delved into critical issues around mountain ecosystems, communities, governance, and transboundary cooperation.

Aloe ferox could be the next rooibos, which is successfully using its geographical indications (GI) status to unlock value throughout the biotrade value chain, Dr Verhoef said. Other South African plants that are also an underutilised asset with economic potential for the country, include honeybush, baobab, umsuzwane, rose geranium, imphepho, Cape chamomile, Kalahari melon, mafura, sour plum, and African ginger.

A GI consists of the name of the place of origin. It links a product to a specific geographical area, which indicates the origin of where the product is produced, processed, or prepared.

Overlooking the potential of Aloe ferox, which has been scientifically proven to contain double the amino acids and 20 times more antioxidants than its international cousin, Aloe vera, Dr Verhoef explains, South Africa is not only undermining its biodiversity but also the economy. Aloe ferox is most popularly used for its laxative effect (aloe bitters) and as a topical application to the skin, eyes, and mucous membranes. It is also used for many traditional uses as well as cosmetic purposes.

Time to capitalise

According to him, Aloe ferox remains an underutilised asset, relegated to niche markets and small-scale production due to regulatory constraints and the unwillingness to obtain access and benefit-sharing (ABC) permits needed to navigate obstacles in South Africa as well as Namibia, Botswana, Zimbabwe, and Mozambique.

“This is not just an agricultural oversight; it is a glaring economic misstep. It is high time that South Africa capitalises on its green gold, turning the tables on international competitors and finally giving Aloe ferox the global podium it deserves. This is not just an agricultural oversight; it is a glaring economic misstep.

Aloe ferox could be a flagship in the global wellness market, much like rooibos has become for tea. But until we embrace and promote our indigenous resources with the same vigour as we do foreign ones, our ‘green gold’ will remain just out of reach, a latent promise unfulfilled. It’s high time South Africa capitalise and turn the tables on international competitors, finally giving Aloe ferox the global podium it deserves,” said Dr Verhoef.

The path forward, he explains, requires a radical shift in how we view and value our native species. It demands a coalition of dedicated scientists, legal advisers, and farmers to advocate for more accommodating regulations and stronger market support. The pharmaceutical and cosmetic industries – major users of aloe products – must also be brought into the fold to help recalibrate the scales in favour of Aloe ferox. South Africa’s rich biodiversity is a national treasure, yet our approach to leveraging this wealth remains timid and fragmented.

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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