Mass-rearing of Biocontrol Agents at SASRI (2010-2012)

Denise Gillespie- Sugar Research Institute- Mount Edgecombe- Durban

The South African Sugar Research Institute (SASRI) has reared and supplied biocontrol agents across South Africa to deal with invasive aquatic weeds - water lettuce (Pistia stratiotes), water hyacinth (Eichornia crassipes) and Kariba weed (Salvinia molesta).

They have also reared and a range of terrestrial invasives such as triffid weed (Chromolaena odorata), bugweed (Solanum mauritianum), lantana (Lantana camara), Barbados gooseberry (Pereskia aculeata) and famine weed (Parthenium hysterophorus).

The total number of insect bio control agents produced on 2010-2012 is 550 629 including aquatic and terrestrial plants.

These bio control agents were released in Limpopo, Gauteng, Free State, Kwazulu Natal, Eastern Cape, Western Cape and Congo.

The first part of the presentation outlines :
* the success and the constraints experienced over the three year contract in terms of mass rearing and release.
* It also looks at why some agents are reared in high numbers than others
* The distribution of the bio control agents throughout South Africa through SASRI.

The second part dealt with the ending of the contract ended on 31 October, 2013 and planning the continuation of the mass rearing of selected or all bio control agents being reared and considering new agents for current or additional IAP.

For more information please see the fact sheets below:

Water lettuce (Pistia stratiotes)

Water hyacinth (Eichornia crassipes)

Kariba weed (Salvinia molesta)

Triffid weed (Chromolaena odorata)

Bugweed (Solanum mauritianum)

Lantana (Lantana camara)

Barbados gooseberry (Pereskia aculeata)

Famine weed (Parthenium hysterophorus)










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