×

Warning

JUser: :_load: Unable to load user with ID: 504

Notice

Thank you for visiting our website.

Please note that the site is not fully functional at the moment as we are in the process of re-developing. We hope that you will find the available resources helpful in the meantime.

German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

1 2 3 4 5 6 7

Environmental Programmes

In order to tackle our country’s socio-economic challenges, the government adopted the Outcomes based approach to improve government performance and providing focus on service delivery. find out more

Releases of mass reared alien invasive plant biological control agents against aquatic weeds in the Kruger National Park- a worthwhile exercise?

Releases of mass reared alien invasive plant biological control agents against aquatic weeds in the Kruger National Park- a worthwhile exercise?

Des Conlong 1, 2 and Ezekiel Khosa3
1South African Sugarcane Research Institute, 170 Flanders Drive, Mount Edgecombe. 4300. KwaZulu-Natal, South Africa.
2Department of Conservation Ecology and Entomology, Faculty of Agri-Sciences, Stellenbosch University, P.O. Matieland, Stellenbosch. South Africa.
3SAN Parks, Alien Biota Section, Skukuza, Kruger National Park.
;

Since 2010, the South African Sugarcane Research Institute (SASRI) has supplied the Alien Biota section of the South African National Parks (SAN Parks), biological control agents for water lettuce (Pistia stratiotes) and water hyacinth (Eichornia crassipes) control at selected sites in the Kruger National Park. Sites with the former weed included the Sabie river below Lower Sabie Rest Camp in the South, around Skukuza Rest Camp, Orpen Dam, the Letaba river and Dakamila Pans in the north. Neohydronomus affinis exclusively was released at these sites. A mixture of Neochetina bruchi and N. eichhorniae were releases at sites infested with water hyacinth on the Letaba river at Engelhardt Dam and Makhadzi spruit. Initially, the mired Eccritotarsus bethae was also released at Makhadzi spruit.

The numbers of biocontrol agents released at each site over time, and the colonisation and progress of control over the last three years at the various sites will be presented and discussed. At some sites herbicide use has been drastically reduced. A case will be made for regular monitoring of these sites, and the implementation of an integrated pest management approach to minimise costs, and maximise sustainability of the control of these weeds at these sites and others.

Read 3133 times

General News Updates

2019 National Symposium on Biological Invasio…

26-02-2019

This is your invitation to South Africa's 2019 National Symposium on Biological Invasions. The convention is hosted by the Centre for Invasion Biology (CIB), University of Stellenbosch, and the Biolo... Read more

2019 Invasive Species Training

22-01-2019

During the past five years (2014-2018), ISSA invasive species trainers have trained 4 000 in the identification of invasive species and laws pertaining to invasive species across South Africa.  ... Read more

Alien Grass Working Group

04-09-2018

Who are we? The South African National Alien Grass Working Group was jointly initiated by the South African Biodiversity Institute (SANBI) and the Centre for Excellence in Invasion Biology (C·I·B) in... Read more

Permits for planting indigenous Cynodon?

01-03-2018

On 16 February, 2018, South Africa's Department of Environmental Affairs issued amendments to the regulations and lists relating to the National List of Invasive Species.  Updates to the draft&n... Read more

Invasive species training 2018 dates released

28-02-2018

Interested in invasive species?  How much do you know about NEMBA invasive species compliance for landowners and organs of state? The South African Green Industries Council (SAGIC) have released... Read more

Communications post for Africa advertised

25-01-2018

The Nature Conservancy has advertised a brand new post:  Communications Manager, Africa Region. Knowledge of invasive species and water would be an asset in this post. See details below:    Job Titl... Read more