Plant protection agents based on 1,2,4-triazole derivatives and also new derivatives of 1,2,4-triazole

A compound of the formula I ##STR32## in which the Zs are identical or different and denote halogen, nitro, cyano, trifluoromethyl, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkoxy or (C.sub.1 -C.sub.4)-alkylthio, it being possible for the alkyl, alkoxy and alkylthio groups to be substituted by one or more halogen atoms, in particular fluorine or chlorine, or (C.sub.3 -C.sub.6)-cycloalkyl which can be substituted by (C.sub.1 -C.sub.4)-alkyl, or denotes phenyl or phenoxy, it being possible for phenyl and phenoxy to be monosubstituted or polysubstituted by halogen and/or monosubstituted by trifluoromethyl,

• Y denotes hydrogen, (C.sub.1 -C.sub.4)-alkyl which can be wholly or partially substituted by halogen atoms and/or monosubstituted by (C.sub.1 -C.sub.4)-alkoxy or (C.sub.1 -C.sub.4)-alkylthio, or (C.sub.2 -C.sub.6)-alkenyl or (C.sub.2 -C.sub.6)-alkinyl or denotes (C.sub.3 -C.sub.6)-cycloalkyl which can be substituted by (C.sub.1 -C.sub.4)-alkyl and/or a dichlorovinyl radical, and
• X denotes hydroxyl, (C.sub.1 -C.sub.4)-alkyl, (C.sub.3 -C.sub.6)-cycloalkoxy, phenyl- C.sub.1 -C.sub.6)-alkoxy, phenoxy, (C.sub.2 -C.sub.6)-alkenyloxy, (C.sub.2 -C.sub.6)-alkinyloxy or (C.sub.1 -C.sub.6)-alkoxy or (C.sub.1 -C.sub.6)-alkylthio, it being possible for the alkoxy or alkylthio group to be substituted by (C.sub.1 -C.sub.2)-alkoxy, mono-(C.sub.1 -C.sub.4)-alkylaminocarbonyl, di-[(C.sub.1 -C.sub.4)-alkyl]aminocarbonyl, phenylaminocarbonyl, N-[(C.sub.1 -C.sub.4)-alkyl]-N-phenyl-aminocarbonyl, mono-(C.sub.1 -C.sub.6)-alkylamino, di-(C.sub.1 -C.sub.6)-alkylamino, (C.sub.1 -C.sub.6 -alkyl)carbonyloxy, (C.sub.1 -C.sub.2)-alkylthio, cyano or halogen, or denotes a radical of the formulae ##STR33## in which R in each case denotes hydrogen or (C.sub.1 -C.sub.4)-alkyl, or denotes mono-(C.sub.1 -C.sub.4)-alkylamino, di-(C.sub.1 -C.sub.4)-alkylamino, (C.sub.5 -C.sub.6)-cycloalkylamino, piperidino, morpholino or 2,6-dimethylmorpholino or a radical of the formula ##STR34## in which R.sup.1 and R.sup.2 can be identical or different and denote (C.sub.1 -C.sub.4)-alkyl radicals, and in which R.sup.1 and R.sup.2 together can also form a 5-membered, 6-membered or 7-membered cycloalkyl radical, and
• n denotes the number 0, 1, 2, or 3, or, in the event that x=OH, salts thereof which can be employed for agriculture, it being necessary, in the event that X=(C.sub.1 -C.sub.4)-alkyl, for Y to denote CCl.sub.3 or CHCl.sub.2, and excepting the compounds of the formula I in which
• (a) Y denotes H, (Z).sub.n denotes H, 4-Cl, 4--CH.sub.3, --OCH.sub.3 or 4-OC.sub.2 H.sub.5 and X denotes -CH.sub.3 OH, OCH.sub.3 or OC.sub.2 H.sub.5,
• (b) Y denotes CH.sub.3, (Z).sub.n denotes H4-NO.sub.2, 4-OCH.sub.3, 2-Cl, 4-Cl, 2-OCH.sub.3 -4-NO.sub.2 or 2-CH.sub.3 -4-NO.sub.2 and X denotes OH or OC.sub.2 H.sub.5 and
• (c) Y denotes C.sub.2 H.sub.5 or CH(CH.sub.3).sub.2, (Z).sub.n denotes H and X denotes OCH.sub.3.