Abstract: Agents for regulating plant growth containing an effective amount of at least one cyclohexanone derivative of the formula I ##STR1## where A, X, n, Y, Z and R have the meanings given in the disclosure, or salts of these compounds, and a process for regulating plant growth.

Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1 is alkyl, alkenyl, alkynyl, haloalkyl or haloalkenyl, alkoxyalkyl, unsubstituted or substituted cycloalkylmethyl, unsubstituted or substituted benzyl, or is a 5-membered heterocyclic ring which is bonded to the oxygen via a methylene unit,R.sup.2 is alkyl, R.sup.3 is hydrogen, alkylcarbonyl, alkenylcarbonyl, unsubstituted or substituted benzoyl, trialkylsilyl, alkyl- or arylsulfonyl, dialkylphosphono or -thiophosphono, or an organic or inorganic cation,R.sup.4 is unsubstituted or substituted alkyl, alkenyl or alkynyl, or unsubstituted or substituted cycloalkyl, andY is hydrogen, methoxycarbonyl, cyano, alkyl or halogen, and herbicides containing these compounds.

Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1, R.sup.2, A, m, n, x and y have the meanings given in the disclosure, a process for their manufacture, herbicidal and plant growth-regulating agents containing the novel active ingredients, and processes for combating unwanted plant growth and for regulating plant growth.

Abstract: Tetrahydro(thio)pyran-2,4-dione derivatives of the formula ##STR1## where R.sup.1 is hydrogen, a cation, alkylcarbonyl, C.sub.2 -C.sub.10 -alkenylcarbonyl, or benzoyl which is unsubstituted or substituted by alkyl, R.sup.2 is alkyl, R.sup.3 is a non-aromatic, unsubstituted or alkyl-substituted heterocyclic compound of 5 to 7 ring members and having at most one double bond in the heterocyclic ring, X is oxygen or sulfur, and Z is oxygen or the radical NO--R.sup.4, R.sup.4 denoting alkyl, alkenyl, alkynyl, haloalkyl, hal oalkenyl, alkoxyalkyl or the radical CH.sub.2 --R.sup.5, where R.sup.5 is a he terocyclic compound of 5 ring members and containing from 1 to 3 hetero-atoms and from 0 to 2 double bonds and bearing either no substituents or one or two substituents selected from the group consisting of alkyl, alkoxy, halogen, trifluoromethyl, alkoxymethyl, alkylthiomethyl and vinyl, or R.sup.

Abstract: Cyclohexenone derivatives of the general formula ##STR1## where R is C.sub.1 -C.sub.6 -alkyl, cyclopropyl, phenyl or C.sub.2 -C.sub.6 -alkoxyalkyl, R.sup.1 is hydrogen, tetrahydropyran-2-yl, benzoyl or unsubstituted or halo-substituted C.sub.1 -C.sub.6 -alkanoyl, and R.sup.2 is hydrogen or C.sub.1 -C.sub.6 -alkyl, and phytophysiologically tolerable salts thereof, and their use for regulating plant growth.

Abstract: Cyclohexenone derivative of the formula ##STR1## where A is oxygen or NOR.sup.8, where R.sup.8 is alkyl, alkenyl, alkynyl, haloalkyl or haloalkenyl, chlorothienyl or alkoxyalkylB is O, S, SO or SO.sub.2,X is hydrogen or methoxycarbonyl,R.sup.1 is hydrogen, carbonylalkyl, benzoyl or a cation,R.sup.2 is alkyl,R.sup.3 and R.sup.4 are hydroxyl, chlorine, bromine, thioalkylcarboxyl, thiocarbonylalkyl, alkylcarbonyloxy, alkoxy, or alkylthio, or R.sup.3 and R.sup.4 together epoxy,R.sup.5 and R.sup.6 are hydrogen or methyl or R.sup.5 and R.sup.6 are together methyleneoxyethylene, andR.sup.7 is hydrogen or methyl,and herbicides containing these compounds.

Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1, R.sup.2, A and X have the meanings given in the disclosure, a process for their manufacture, herbicidal and plant growth-regulating agents containing the novel active ingredients, and methods of combating unwanted plant growth and of regulating plant growth.

Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1 is --CHO or --CH(OR.sup.3).sub.2, R.sup.2 is alkyl or alkoxyalkyl, each of 1 to 4 carbon atoms, or cyclopropyl, and R.sup.3 is alkyl of 1 to 8 carbon atoms, and salts thereof, processes for their manufacture, and their use as agents for regulating plant growth.

Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings stated in the description, herbicides which contain these compounds and a method for controlling undesirable plant growth.