Abstract: N-Acyl-piperidone ketal compounds of the formula ##STR1## in which R.sup.1 represents alkyl or halogen,R.sup.2 represents halogen,R.sup.3 represents alkyl andR.sup.4 represents alkyl, orR.sup.3 and R.sup.4 together represent an optionally branched alkylene chain, andR.sup.5, R.sup.6, R.sup.7 and R.sup.8 independently of one another represent hydrogen or alkyl,and their use as antidotes for protecting crop plants from herbicidal damage.

Abstract: N-Acyl-piperidone ketal compounds of the formula ##STR1## in which R.sup.1 represents alkyl or halogen,R.sup.2 represents halogen,R.sup.3 represents alkyl andR.sup.4 represents alkyl, orR.sup.3 and R.sup.4 together represent an optionally branched alkylene chain, andR.sup.5, R.sup.6, R.sup.7 and R.sup.8 independently of one another represent hydrogen or alkyl,and their use as antidotes for protecting crop plants from herbicidal damage.

Abstract: The use of N,N'-disubstituted piperazines of the general formula ##STR1## in which R.sup.1 represents alkyl or halogen,R.sup.2 represents halogen andR.sup.3 represents phenyl (which optionally carries one or more substituents selected from alkyl, alkoxy, halogen, haloalkyl, nitro and alkanoyl), phenylalkyl which has 1 to 4 carbon atoms in the alkyl part (and which optionally carries one or more substituents on the phenyl part selected from alkyl, alkoxy, halogen, haloalkyl, nitro and alkanoyl), 3-phenyl-prop-2-enyl (which optionally carries one or more substituents on the phenyl part selected from alkyl, alkoxy, halogen, haloalkyl, nitro and alkanoyl), naphthyl (which optionally carries one or more substituents selected from alkyl, alkoxy, halogen, haloalkyl, nitro and alkanoyl), pyridyl (which optionally carries one or more substituents selected from alkyl, alkoxy, halogen, haloalkyl, nitro and alkanoyl), alkyl, formyl or alkoxycarbonyl,as antidotes for protecting crop plants from damage by herbicides.

Abstract: N-Acyl-piperidones of the formula ##STR1## wherein R represents methyl or chloro,and their use as antidotes for protecting crop plants from herbicidal damage.

Abstract: The use of N,N'-bis-(haloacyl)-diaza-cycloalkanes of the general formula ##STR1## in which R.sup.1 represents alkyl or halogen,R.sup.2 represents halogen,R.sup.3 represents alkyl or halogen,R.sup.4 represents halogen,R.sup.5 represents hydrogen or alkyl with 1 to 4 carbon atoms,R.sup.6 represents hydrogen or alkyl with 1 to 4 carbon atoms andQ represents an alkylene chain which has 2 or 3 carbon atoms in the alkylene chain and is optionally monosubstituted or polysubstituted by alkyl with 1 to 4 carbon atoms,as antidotes for protecting crop plants from damage by herbicides.

Abstract: New halogenoalkylamides of the general formula ##STR1## in which R.sup.1 represents halogenoalkyl,R.sup.2 represents alkyl, alkenyl, alkynyl, alkoxyalkyl, alkylthioalkyl, aralkyl, halogenoalkyl or alkoximinoalkyl,R.sup.3 represents hydrogen or alkyl with 1 to 4 carbon atoms,R.sup.4 represents hydrogen or alkyl with 1 to 4 carbon atoms andR.sup.5 represents hydrogen, alkyl, alkenyl, alkynyl or aralkyl,processes for their preparation and their use as antidotes for protecting crop plants from damage by herbicidally effective thiolcarbamates and acetanilides.Novel amine derivatives of the general formula ##STR2## in which R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the above-mentioned meaning, and a process for their preparation.A novel halogenoacylamines of the general formula ##STR3## in which R.sup.1, R.sup.2 and R.sup.3 have the above-mentioned meaning andR.sup.6 represents hydrogen or methyl,as well as processes for their preparation.

Abstract: Novel herbicidal composition comprising(1) a herbicidally active acetanilide and(2) as an antidote against damage to crop plants, N,N-diallyl-dichloroacetamide of the formula ##STR1##

Abstract: N-Acyl-piperidones of the formula ##STR1## wherein R represents methyl or chloro, and their use as antidotes for protecting crop plants from herbicidal damage.

Abstract: Herbicidal compositions in the form of synergistic combinations of either 3-methylmercapto-4-amino-6-isopropyl-1,2,4-triazin-5-one or 3-methylmercapto-4-amino-6-tert.-butyl-1,2,4-triazin-5-one with either or both of N'-(3,4-dichlorophenyl)-N,N-dimethyl-urea and 3-amino-1,2,4-triazole, which are individually known compounds, which combinations possess synergistic herbicidal properties especially for the control of weeds.

Abstract: New acylated urea compounds of the formula ##EQU1## IN WHICH R.sup.1 is alkyl, haloalkyl or optionally substituted aryl,R.sup.2 and R.sup.3, which may be the same or different, are each alkyl or alkenyl, andAz is a 1,3,4-thiadiazole radical which is linked in the 2-position and is optionally substituted in the 5-position;Exhibit excellent herbicidal activity and can be used as selective or total herbicides.