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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

Law students triumph in Africa
2007-08-16

 

Pictured with the trophies they have won are, from the left: Ms Qaqamba Vellem (fourth-year LL.B. student), Prof. Johan Henning (Dean of the UFS Faculty of Law), Prof. Loot Pretorius (Head of the Department of Constitutional Law and Philosophy of Law), Ms Lucy Nthotso (fourth-year LL.B. student), Ms Thapi Matsaneng (moot coach and lecturer in Corporate Law at the UFS) and Mr Johnny Modipa (third-year LL.B. student).
Photo: Stephen Collett

Law students triumph in Africa

A team of students from the Faculty of Law at the University of the Free State (UFS) has won the first prize at the 16th African Human Rights Moot Court Competition held in Senegal last week.

The UFS team consisted of three L.L .B. students, namely Ms Lucy Nthotso, Ms Qaqamba Vellem and Mr Johnny Modipa, and beat teams from numerous South African law faculties as well as from the rest of Africa.

The Moot Court Competition is an event where students from law faculties across Africa argue a hypothetical case on human rights issues pertinent to the continent. This year’s competition dealt with the issues of refugee status, nationality, HIV/AIDS and the right to education.

Over and above the UFS team’s success as the overall competition winners, the UFS team came first in the written memorials category (written substance of the argument of the particular party), beating seventy teams from both the English and French speaking African countries.

To further add to their splendid overall team performance, team members Ms Vellem and Ms Nthotso were selected amongst the top fifteen students for their oral arguments out of the hundred and forty who took part in the competition. Ms Vellem came tenth and Ms Ntshotso eleventh.

According to the Dean of the Faculty of Law at the UFS, Prof. Johan Henning, the faculty is extremely proud of this achievement of its students in such a highly regarded competition.

“This success shows that the quality of legal education and training we provide here at the UFS, both through the 4- and 5-year L.L.B. options is rated among the best in Africa, if not the world,” Prof. Henning said.

He said it also showed that the faculty is committed to producing black law graduates of substance who are second to none.

The three students were coached by Ms Thapi Matsaneng, a UFS law graduate who is completing her Ph.D. at the University of London and who was groomed by the UFS as part of its Grow Our Own Timber programme, aimed at producing black academics.

Prof. Loot Pretorius, head of the department of constitutional law and philosophy of law at the UFS, acted as a consultant to the team. Ms Matsaneng also accompanied the three team members to Senegal.

The panel of judges who determined the winners comprised of the commissioners of the African Commission on Human and Peoples’ Rights, a South African Constitutional Court judge as well as other respected members of the legal community.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt.stg@ufs.ac.za
16 August 2007

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