As the name suggests, spray-grazing involves the combination of herbicides and grazing. The technique sees a sub-lethal rate of a phenoxy herbicide applied to broadleaf plants at rosette stage, followed by intensive grazing. The combined action of herbicide and grazing kills or severely retards the weeds, preventing seed setting and allowing more desirable species to flourish.

The effect of spray-grazing on pasture composition at the end of October. Untreated pasture (left) compared with treated areas (middle and right) in the same paddock.