The invention provides a pre-emergence herbicidal composition for controlling broadleaf weeds and/or annual grasses in agricultural crops comprising a herbicidally effective amount of (a) diuron and (b) oxyfluorfen and an agriculturally acceptable adjuvant and/or carrier. Also provided is a method of controlling weeds and/or grasses in agricultural crops which comprises contacting the vegetation or the locus thereof with or applying to the soil to prevent the emergence of weeds or grasses a herbicidally effective amount of a herbicidal composition according to an embodiment of the invention. The invention also provides in a use of a combination of diuron and oxyfluorfen as herbicidal active ingredients for the pre-emergence control of selected weeds and grasses in agricultural crops. Particularly preferred are a method and uses wherein the applicative dose of diuron is within the range of 400-950 g per hectare and the applicative dose of oxyfluorfen is within the range of 40-95 g per hectare.
