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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

Historians must place African history on world stage – Dr Zeleza
2017-05-30

 Description: Historians must place African history on world stage Tags: Historians must place African history on world stage

From the left: Panellists Rev Henry Jackson,
Prof Irikidzayi Manase and Arno Van Niekerk at a book
launch and panel discussion on Africa Day hosted by the
UFS Sasol Library.
Photo: Mamosa Makaya

“African historians must take seriously the challenge of placing African history in world history, and in the history of our species, Homo sapiens.”

With these words, Dr Paul Tiyambe Zeleza, Vice Chancellor of the United States International University-Africa in Nairobi, Kenya, stressed the continent’s challenge.

According to him the contest should continue to recover and reconstruct Africa’s long history. Liberating African knowledges can be done by: “Provincialising Europe that has monopolised universality, universalising Africa beyond its Eurocentric provincialisation, and engaging histories of other continents on their own terms.”

University celebrates Africa Month in various ways  
Dr Zeleza delivered the ninth Africa Day Memorial Lecture, titled The Decolonisation of African Knowledges, at the University of the Free State (UFS). The lecture, hosted by the Centre for Africa Studies (CAS), took place on 24 May 2017 in the Equitas Auditorium on the Bloemfontein Campus and was one of the ways in which the UFS celebrated Africa Month.

Scholars should immerse themselves in these thoughts

Dr Zeleza focused on two issues, which he said were interconnected. They were the unfinished project of decolonising African knowledges and the continent's positioning in global knowledge production.

He said Africa’s scholars and students should “immerse themselves in the rich traditions of African social thought going back millennia”. According to him the continent’s research profile still remains weak in global terms.

“It is imperative that the various key stakeholders in African higher education from governments to the general public to parents, and to students, faculty, staff, and administrators in the academic institutions themselves, raise the value proposition of African higher education for 21st century African societies, economies, and polities.”

“Colonialism is associated with injustice
and inequality, but what happens when
our liberators become our oppressors?”

Library celebrates with panel discussion and book launch
The UFS Sasol Library celebrated Africa Day by presenting a book launch and panel discussion on 25 May 2017, on the pertinent and current political theme of land redistribution with a comparative basis of land invasions in Zimbabwe.

Prof Irikidzayi Manase discussed his book White Narratives: The Depiction of Post-2000 Land Invasions in Zimbabwe, accompanied by Rev Henry Jackson who wrote Another Farm in Africa. A perspective of the economic implications of land redistribution in South Africa was discussed by panellist Arno Van Niekerk: Senior Lecturer of Economics at the UFS Faculty of Economic and Management Sciences.

Inequality still an African problem
The content of the books are a stark reminder of the burning issues of inequality and loss of identity of those who lost their farms in Zimbabwe, a collection of memoirs by white farmers and their families. Rev Jackson gave a religious perspective on reconciliation, forgiveness and the question of land ownership, saying that healing of injustice begins with forgiveness of past transgressions.

Van Niekerk highlighted that while land issues were important, “social cohesion is affected by the economic decisions that will be made”. In closing, Prof Manase called for serious consideration of what the future may hold. “Colonialism is associated with injustice and inequality, but what happens when our liberators become our oppressors?” 

The panel discussion was attended by staff and students of the university, and was lit up by robust discussions on possible historical and future solutions to the question of land, decolonisation and political power struggles in Southern Africa and lessons to be learned from Zimbabwe.

UFS celebrates Africa Month (24 May 2017)

 

 

 

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