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26 September 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Read More Prof Wijnand Swart PSHB
A small 2 mm beetle, known as the Polyphagous shothole borer (PSHB) kills and infects trees. South Africa is the largest geographical area in the world to be infested with this tree killer. Pictured here is Prof Wijnand Swart who is working with two neighbourhood associations in Bloemfontein to monitor the occurrence of the beetle in the city.

Ornamental trees are dying all over South Africa, and it is feared that certain fruit and nut trees are also in danger. This is cause for great concern, not only among ecologists, farmers, foresters, and landscapers, but for homeowners as well. In private gardens and on streets throughout the country, trees that are afflicted include English oak, Chinese and Japanese maples, boxelder, and sweetgum.
 
The cause of all this havoc is a small 2-mm beetle, known as the Polyphgous shothole borer (PSHB; Euwallacea fornicatus) that originates from Southeast Asia.

Working to find a solution

"Based on damage seen in the USA and Israel, there is significant danger of losing many of our ornamental trees as well as fruit and certain nut trees in South Africa,” says Prof Wijnand Swart, Professor of Plant Pathology and Discipline Head in the Department of Plant Pathology at the University of the Free State (UFS).

Cases of afflicted trees were reported from all provinces in South Africa, except for Mpumalanga. Countries such as Israel and the USA have also suffered great losses as a result of this beetle.  

Research is being conducted on the beetle and its associated fungus, Fusarium euwallaceae, in order to understand their relationship and hopefully find a solution to stop, or at least manage, the invasion of trees. To investigate the largest geographical outbreak of this beetle in the world, academics from seven universities in South Africa are working together with the Forestry and Agricultural Biotechnology Institute (FABI) at the University of Pretoria through a multi-institutional and multi-disciplinary research network. UFS researchers are part of this network.
 
Senior Lecturer in the UFS Department of Plant Sciences, Dr Gert Marais, is conducting research on the PSHB and its associated fungi, with the focus on pecan trees, in conjunction with the South African Pecan Nut Producers' Association. Cases of infected pecan-nut trees were reported in the Northern Cape as well as in Nelspruit. 
 
Prof Swart is working with entomologists in the UFS Department of Zoology and Entomology to find a biological control agent to parasitise the beetle. “I have already found one instance of a parasitic wasp associated with the beetle and will continue to search for more specimens during the coming summer,” he commented. 
 
Understanding the beetle

The first cases of infected trees were discovered in 2017 when Dr Trudi Paap, associated with FABI and the South African National Biodiversity Institute, conducted a survey of pests and diseases in and around National Botanical Gardens in South Africa. 
 
FABI has been studying the tree killer intensively to find out more about its life cycle. The term ‘polyphagous’ refers to the ability of the PSHB to infest many different tree species.

On their website, FABI states that an important distinction is being made between different types of infestations. “Reproductive host trees are trees that are infested by the beetle and where it successfully establishes a breeding gallery in which the fungus grows, where eggs are laid, and larvae develop into mature adults, thus completing its life cycle. The majority of reproductive hosts eventually succumb to the disease symptoms caused by the fungus.”
 
“Non-reproductive host trees are trees where the beetle attacks, penetrates, and inoculates the fungus, which then starts to grow in the sapwood. However, the beetle either leaves or dies without reproducing in these trees. The fungus can eventually kill or damage reproductive hosts, but many of the tree species on this list seem to be unaffected.”
 
Involving the community

The situation also provides an opportunity for communities to directly benefit from research conducted by tertiary institutions. Prof Swart is working together with two neighbourhood associations in Bloemfontein to monitor the occurrence of the beetle in the city and surrounding areas. 

He urges residents in the Mangaung Metro who find instances of infected trees, to report it to Duart Hugo (duarthugo99@gmail.com ), who is compiling a database of infected trees in the area. 
 
FABI advises homeowners to cut down heavily infested reproductive host trees. Should you decide to burn the wood, note that beetles will fly away when the wood becomes hot or when smoke appears. Do not burn infested trees in uninfected areas.

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Khayalami residence launches first in-house library
2016-04-21

Description: 2016 KL News Khayalami library  Tags: Khayalami residence launches first in-house library in the country
Bongani Mtotoba (left) and Sinoxolo Gcilitshana (right) at the first-ever 24 hour in-house library at Khayalami residence. The librarian and Deputy Residence Head respectively hope to revive the culture of reading on our Bloemfontein Campus.
Photo: Valentino Ndaba

“It is said that reading means to the brain what exercise means to the body. For that reason, we want to bring back the culture of reading to our students who are, after all, the future replacement of the leadership of our wounded and broken country,” said Sinoxolo Gcilitshana, Deputy Residence Head, and Prime of Khayalami.

Titles such as A Life Ever Lasting by Miranda Hearn, To Live Free by William Wilberforce, Powers of Darkness Powers of Light by John Cornwell, and Character Counts by Charles Dyer are among the 228 inspirational books on the shelves of Khayalami residence’s library. Tuesday 12 April 2016 was a proud moment for the residence as it launched the first library in the country located within a university residence on the Bloemfontein Campus of the University of the Free State.

Last year, Dimpho Jasa, a resident at Khayalami, approached Sinoxolo, who then held the Residence Committee (RC): Academics portfolio, with an idea of forming a book club. Sinoxolo had suggested that a library be established in order to make the book club sustainable. That conversation served as a foundation of the 24 hour in-house library.

“We started with five books last year,” said Sinoxolo, “and ever since we sent the message out, the Vice-Chancellor and Rector, Prof Jonathan Jansen has been supporting us together with the Vice-Rector, Prof Nicky Morgan, as well as the Dean of the Faculty of Education, Prof Sechaba Mahlomaholo, and the Head of the Department of English, Prof Helene Strauss.”  

Now, more than 170 young men have access to a growing library that is expected to hold 1500 books by September, when Sinoxolo steps down as the Prime. According to Bongani Mtotoba, the RC: Academics and librarian, some residents have made pledges to help expand the collection. “The response has been quite positive from the guys,” he said.

Borrowers are required to submit a book review upon returning the book. This feedback will be compiled by the English Department into a book available to the public.

Khayalami’s pioneering spirit has also seen the residence run a successful writing competition in 2015. It has since been introduced to the rest of the East College, and now will take place annually.  

For more information on how to donate books or enter the writing completion, contact Sinoxolo on 0783332203 or semsinoxolo@hotmail.com.

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