As herbicide 3- (3,4-dihydro -2h- benzo [1,4] oxazin-6-yl *) lH-pyrimidine-2,4-dione compound

The present invention relates to a uracil of formula (I) wherein the variables are defined in the description, of formula (I), processes and intermediates for uracil, and compositions comprising them as herbicides, i.e. for controlling harmful plants, also relates to a method for controlling plant growth is undesired, the method comprising a herbicidally effective amount of at least one role uracil of formula (I) in the plant, its seed and / or shoot growth.