| Impact ID | 7106 |
| Impact Type | Commerce |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | "In the Vaalwater area along the Mokolo River, farmers found that tobacco was tinted red when irrigation water was withdrawn from the root zone of this weed. The discolouring of the tobacco results in a 50% reduction in price." |
| Reference | 32668 |
| Cost | |
| Location | Mokolo River, South Africa |