1n116361n1A herbicidal composition comprising: a) a herbicide compound A which is selected from the group of imidazolinones； and b) an adjuvant B which is a surfactant selected from the groups b1 to b5: b1 ) a nonionic surfactant of the formula RX and polyalkoxylated derivatives thereof wherein R is selected from aliphatic or aromatic residues having at least eight carbon atoms； X is selected from hydroxy O (C C alkyl) O (C C alkenyl) amine amide or ester； and n is 1 2 3 4 5 or 6； b2) an anionic surfactant of the formula RY wherein R is selected from aliphatic or aromatic residues having at least eight carbon atoms； Y is selected from carboxylate sulfonate sulfate phosphate or phosphonate； and n is 1 2 3 4 5 or 6； b3) a cationic surfactant； b4) a zwitterionic surfactant； or b5) a polymeric surfactant； and wherein the weight ratio of the herbicide compound A and the adjuvant B is from 2:1 to 1 :60； and the use of the said compositions for controlling undesirable vegetation.
