The present invention relates to plant protection agents for use as safeners for herbicides, which contain a triazole compound of the formula I or its salt in which Z and Z1 denote halogen, nitro, cyano, an optionally substituted amino, alkyl, alkoxy, alkylthio, cycloalkyl, phenyl or phenoxy radical, X denotes hydroxyl, -OCH2Si(CH3)3, alkyl, cycloalkoxy, phenoxy, alkenyloxy, alkynyloxy, (substd.) alkoxy, (substd.) alkylthio, a radical of the formulae and n = 0, 1, 2 or 3. A large number of the compounds of the formula I are new. The invention also relates to these compounds and their preparation.