Without biocontrol, Hartbeespoort Dam could be 70% covered in superweed
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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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The tiny planthoppers are biological control agents and natural enemies of the world’s worst aquatic weed
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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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