1. A synergistic herbicidal composition comprising a herbicidally effective amount of (a) a compound of formula (I) or an agriculturally acceptable salt or ester thereof and (b) an auxin transport inhibitor or an agriculturally acceptable salt or ester efir.2. Composition according to claim 1, wherein the compound of formula (I) is represented by at least one form selected from:. a carboxylic acid, carboxylate salt, aralkyl, alkyl ester, an unsubstituted benzyl, substituted benzyl, Salkilovogo and n-butyl complex efira.3 . . Composition according to claim 1, wherein (b) is at least one compound, or an agriculturally acceptable salt, carboxylic acid, carboxylate salt or ester thereof, selected from the group consisting of: hlorflurenol-methyl hlorflurenol, diflufenzopyr, diflufenzopir- sodium, flurenol-methyl, flurenol, and naptalam, naptalam natriy.4. A composition according to any one of claims. 1-3, further comprising an agriculturally acceptable adjuvant or nositel.5. A composition according to any one of claims. 1-3, further comprising a safener gerbitsida.6. Method of suppressing undesirable vegetation which comprises contacting the vegetation or its locus with the ground or water, or applying to the soil or making the water to prevent the emergence or growth of vegetation an herbicidally effective amount of (a) a compound of formula (I) or an agriculturally acceptable salt or ester and (b) an inhibitor auksinov.7 transportation. A method according to claim. 6, where (a) is a compound of formula (I), Calkilovy ester compound of formula (I) or a benzyl ester of a compound of formula (I) .8. The method of1. Синергетическая гербицидная композиция, включающая гербицидно эффективное количество (а) соединения формулы (I)или его сельскохозяйственно приемлемую соль, или сложный эфир и (b) ингибитор транспортировки ауксинов или его сельскохозяйственно приемлемые соль, или сложный эфир.2. Композиция по п. 1, где соединение формулы (I) представлено по меньшей мере в одной
