Latest News Archive

Please select Category, Year, and then Month to display items
Categories
UFS News Media Release Research
Years
2019 2020 2021
Months
February March May June July August September October November December
Previous Archive
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

UFS plans to improve undergraduate pass rate
2005-01-13

The University of the Free State (UFS) will introduce a new foundation programme this year 2005 in an effort to improve the academic performance of undergraduate students.

According to Mr Francois Marais, Head: Centre for Higher Education Studies and Development (CHESD) at the UFS, the programme will assist students by providing for the development of cognitive and critical thinking skills by means of the integration of appropriate thinking skills (such as creative thinking, decision-making, problem solving, reasoning, and how to learn), into the subject content of university courses.

“The foundation programme will benefit students from disadvantaged school backgrounds and, in future, those whose performance in proficiency tests points to the need for additional development in, for example, language proficiency, mathematical literacy, computer skills and life skills,” says Mr Marais.

Based on their level of achievement in the final Grade 12 examination (Senior Certificate), students will be referred to the foundation programme.

In order to improve students writing and reading abilities for higher education studies, foundation programme students will be offered academic language courses in English and Afrikaans.

Kovsie Counselling will render appropriate services, eg career guidance and support to these students.

The new foundation programme will be implemented in the faculties of Natural and Agricultural Sciences, Economic and Management Science, the Humanities and Law.

The duration for this programme differs from faculty to faculty. In the Faculty of Law it will take five years, while in the faculties of the Humanities, Natural and Agricultural Sciences, and Economic and Management Sciences it will take four years.

The national Department of Education will fund the foundation programme for three years. Funding for such programmes was made available to all higher education institutions in South Africa.

The welcoming function for all new first-year students and their parents will take place on Saturday 15 January 2005 at 11:00 in the Callie Human Centre on the main campus in Bloemfontein.

The registration of first-time entering first-year students who applied before 30 November 2004 to study at the Bloemfontein campus will take place from Monday 17 January 2005 to 21 January 2005 at the Callie Human Centre.

Senior undergraduate students (that is, students entering their second or later year of study) may register from 22 to 29 January 2005.

Postgraduate students, first time entering first year students and other students who applied for admission to the main campus after 30 November 2004 must register at the Callie Human from 31 January 2005 to 4 February 2005.

Due to the limitations placed by government on student numbers, the applications of students who applied late will be regarded as pending and will be processed as places become available.

    Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
13 January 2005

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept