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Biological Control

Invasive weeds cleared from Vaal River through community-government collaboration
The Green Guardian
/ 10 September 2024

Invasive weeds cleared from Vaal River through community-government collaboration

This was achieved through a partnership involving the Vaal community, Rand Water, Rhodes University’s Centre for Biological Control, the water and sanitation department and the department of forestry, fisheries and the environment

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Powerful insect army reduces water hyacinth on Hartbeespoort Dam to 2.5%
The Green Guardian
/ 1 May 2024

Powerful insect army reduces water hyacinth on Hartbeespoort Dam to 2.5%

The tiny planthoppers are biological control agents and natural enemies of the world’s worst aquatic weed

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Vaal River residents say water lettuce is ‘national crisis’
The Green Guardian
/ 14 February 2024

Vaal River residents say water lettuce is ‘national crisis’

If allowed to pass the Vaal River Barrage, the plant has access to a journey of about 1 000km of the middle and lower Vaal river, the Bloemhof Dam and then into the Orange river

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