Fuente: Wipo "precision farming" The invention relates to the use of one or more compounds of the formula (I) or salts thereof, (I) wherein the groups R1 to R3, X2 to X6, Z and G are defined as set forth in claim 1, optionally in the presence of additional agrochemical active ingredients, for spot-treatment application against weeds of an agricultural field where a plurality of crop plants grow, have been sown, have transplanted, are to be sown and/or are to be transplanted.