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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

Right to Learn campaign seeks to fund financially needy students
2015-11-11

SRC President, Lindokuhle Ntuli, pledges financial support to the Right to Learn campaign.
Photo: Tango Twasa

In response to the dire need for financial relief for academically deserving students from underprivileged backgrounds, the Student Representative Council (SRC) of the University of the Free State (UFS) launched the Right to Learn campaign on Friday 30 October 2015. The campaign, which aims to counter deregistration, was initiated following the national #FeesMustFall campaign, which gained momentum after students from the University of Witwatersrand first mobilised against the proposed fee increases for 2016.

The SRC’s Projects Committee realised that, although President Jacob Zuma had consented to a 0% increment, the lack of an increase would not eliminate the financial burden currently facing some students.

“The campaign was conceived at the SRC’s strategic planning meeting, and is now spearheaded by the SRCs Projects Committee,” said Letsika Leqoalane, SRC: Academic Affairs. “The campaign was founded on the university's value of ‘Superior Scholarship’ and the SRC’s value of reducing student financial exclusions,” he added.

Students in pursuit of continued access to education


The Right to Learn campaign was established as a supplementary initiative to the #FeesMustFall movement. “The Right to Learn campaign is an initiative to raise funds for students who are facing financial exclusion in the coming year,” said the SRC Academics Affairs officer.

All proceeds will be channeled towards reducing the number of students who will face de-registration in 2016, the SRC textbook bursary, and food bursaries. “This campaign stands on three pillars, namely: no to de-registration, no to student food insecurity, and yes to textbooks,” explained Leqoalane.

A call for support

According to SRC President, Lindokuhle Ntuli, “SRC members have made pledges of no less than R500 each from their own pockets.” The SRC is appealing to the UFS community to make donations into the campaign bank account, and thereafter to email the proof of payment to Ntuli at NtuliL@ufs.ac.za. The account details are:

Account number: 15-7085-0721 ABSA Bank Branch
Reference: SRC FUND
Branch Code: 632005 Cheque Account
Swift code: ABSAZAJJ

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