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18 February 2019 | Story Leonie Bolleurs | Photo HO de Waal
Ground spiny Cactus pear
Shredded, sun-dried, and coarsely ground spiny cactus pear (Opuntia ficus-indica and O. engelmannii), ready to be included in balanced diets for ruminant livestock (cattle, sheep, goats) and wild antelopes.

Prof HO de Waal, researcher in the Department of Animal, Wildlife and Grassland Sciences at the University of the Free State (UFS), has developed a standard procedure for the processing of spiny cactus pear (Opuntia spp.) into livestock fodder. This will ultimately assist in the management of massive infestations of spiny cactus pear and help to convert underutilised farmland back to natural grazing land.

In addition to applying biological control agents, mechanical control is used to harvest alien spiny cactus pear, and the large volume of material is processed as livestock feed.

 

Introduced to South Africa

 

Three hundred years ago, seafarers visiting the Cape of Good Hope introduced the well-known invading alien spiny cactus pear to South Africa. These were later transported inland and by the 1950s about one million ha of South Africa had been invaded by the alien cacti.

Some regions in the Eastern Cape have been taken over by dense, impenetrable thickets of these cacti. Invasive alien plants (IAPs) such as cacti pose a direct threat to, among others, South Africa’s water security and productive use of land.

A range of methods is used to control IAPs, including mechanical, chemical, biological, and integrated control methods.

A control programme must include the three phases of initial control to drastically reduce the existing population; follow-up control of seedlings, root suckers, and coppice growth; and maintenance control on an annual basis to sustain low alien plant numbers.

 

Processing spiny cactus pears

 

According to Prof De Waal, the harvesting and processing of the spiny cactus pear is fairly simple. Although it requires a good measure of physical strength, perseverance, and the necessary protective clothing, the cacti can be processed by harvesting the plants; shredding the cladodes through a cladode cutter; then drying them in the sun, and lastly grinding it in a hammer mill. “The long spines are degraded mechanically by grinding the sun-dried cladode strips in a hammer mill before including it in balanced livestock diets,” said Prof De Waal.

Infestations will be opened, reclaimed, rehabilitated and the natural pastures (veld) allowed to revert back to grazing for livestock.

The National Resource Management Programme (NRM)P) will be approached for official support in clearing and rehabilitating massive areas of infestation by alien spiny cactus pear in the Eastern Cape. Such financial support will be an investment in reducing the infestation by invaders and the rehabilitation and sustainable use of natural resources in South Africa.

News Archive

Community Engagement Indaba a platform to engage Free State community stakeholders
2017-01-04

Description: Community Engagement Indaba Tags: Community Engagement Indaba  

Gender empowerment meets an all-women’s team
of UFS and UCT law students wanting to learn from the
South African judicial system and be ready to fight the
crimes of rape and domestic violence. From the left are:
Robin van Wyk and Rotondwa Mulaudzi, both from UCT,
and Thando Mokaulezi from the UFS.

The University of the Free State (UFS), through the office of Community Engagements, and in collaboration with Bloemshelter has hosted the Community Engagemen Indaba in Bloemfontein since 2013. This is a platform where stakeholders in business, welfare and other community organisations can network and hold dialogues that can bring about solutions to some of the societal challenges faced by Free State communities.

Bloemshelter is an independent and registered Non-Profit Organisation (NPO) and Public Benefit Organisation (PBO) that provides shelter for the homeless – catering for women, women with children, the elderly, men and frail persons. The shelter accommodates up to 100 people in both the male and female shelters. The growing partnership it has with the UFS over recent years has grown its ability to reach out to local communities in a more effective way.

At the 2016 Community Engagement Indaba, a number of stakeholders were invited to participate in the skills development action-learning workshops, under the theme: Unlocking Human Potential and Creating Jobs.  This was a platform to strengthen the university’s partnerships with NPOs and other advocacy groups in the province. UFS academics, Community Service Learning (CSL) students and community partners gave their presentations while the Director of Community Engagement, Bishop Billyboy Ramahlele, offered carpentry training.

Those who attended received certificates that will in future help them build a portfolio of learning evidence. The conference was about creating meaning, igniting learning, propelling movement, inspiring hope and encouraging sharing by bringing together students, academics and members of communities.  The next Community Engagement Indaba will be held next year, on a date that will be announced early in the year.

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