This also relates to compositions comprising the compositions and to the use of herbicides to control Weeds, particularly in crops of useful plants.Claim 1: a herbicide Compound of the formula (1), or an agronomically acceptable Salt of the compound, wherein: R1 is selected from the group consisting of hydrogen, alkyl haloalquilo C1 C1 - 6, 6 - alkoxy, c1-3 alkyl alkoxy C1 C1 - 3 - 3 - 3 - alkoxy C1 c1-3 alkyl, alkoxy haloalq C1 - 3 - Uilo c1-3 alkoxy C1, C1 - alkoxy - 3 - 3 - haloalquilo C1 - C4 - 3, 6 - cicloalcoxi oxasustituido c1-3 alkyl,Cycloalkyl C4 - 6 - alkoxy oxasustituido c1-3 alkyl cicloalcoxi C1 - C4 - 3, 6 - 3 - oxasustituido haloalquilo C1, C4 oxasustituido cycloalkyl - 6 - alkoxy - haloalquilo C1 C1 - 3 - 3, (alcanosulfonilo c1-3 alkyl - C1 - 3amino c1-3 alkyl) -, (alcanosulfonilo C1 3 - cicloalquil C3 - 4amino c1-3 alkyl) -, alkyl - 6carbon C1 ILO c1-3 alkyl, cycloalkyl alquenilo C2 - C3 - 6 - 6, 6 - alquenilo alquinilo C2, C2 - 6Haloalquenilo cianoalquilo C1 - C2 - 6, 6, arilcarbonilo c1-3 alkyl (aryl where can be replaced optionally by one or more of the group consisting of Halo substituents c1-3 alkyl, alkoxy, c1-3, haloalquilo c1-3 alkyl -, aryl alkyl 6 ariloxi C1, C1 6 (where in both cases the aryl P You can optionally substituted by one or more of the group consisting of Halo substituents.C1-3 alkyl alkoxy, c1-3, haloalquilo C1 - 3), and a mono and bicyclic Ring System of three to ten members, can be Aromatic, saturated or partially saturated and heteroatoms can contain 1 to 4 each independently selected from the group consisting of Nitrogen, Oxygen And sulfurThe Ring System being optionally substituted by one or more substituents selected from the group consisting haloalquilo c1-3 alkyl, c1-3, alquenilo c1-3, alquinilo C1 C1 - alkoxy - 3, 3, haloalcoxi c1-3 alkyl C1 - 6 - (P - or S), haloalquilo C1 - 6 - S (o) P -, S - (aryl, aryl or heteroaryl) P - S (o) P Heteroariloxi, ariloxi, alkyl, alkoxy 3carbonilo C1, C1 3amino - P - S (o),Alquilamino