What is “selective” and “non-selective” spraying?
Selective spraying means that only broadleaf species are targeted by the herbicide. Grass species are not injured. It does not mean that “spot spraying” is being done. This procedure is used for eradication and control of restricted and noxious broadleaf weeds. Non-selective spraying is a total vegetation kill application. This means that everything that is sprayed with the herbicide is totally eradicated. Non-selective applications are generally used in plant facilities and around other oilfield installations. Selective spraying is used for control of broadleaf weeds only, within desirable grasses.