The present invention provides novel inhibitors of cystathionin gamma synthase (CGS), their use as selective and non-selective herbicides, agricultural and non-agricultural herbicides, herbicides in integrated pest management, herbicides for gardening, clearing waste ground, clearing industrial or constructions sites, clearing railways and railway embankments, pesticide, fungicide, agricultural plant stimulant or antimicrobial agent. Also provided is a method for the control of undesired vegetation or clearing areas from the undesired vegetation comprising applying to the locus of said undesired vegetation, to the undesired plants or to a habitat thereof, a herbicidally effective amount of the compound of the present invention.

Pesticidal mixtures comprising as active compounds 1) 1-[(1RS)-1,2-dimethylpropyl]-N-ethyl-5-methyl-N-pyridazin-4-yl-1H-pyrazole-4-carboxamide and 2) at least one further compound B selected from B.1) Succinate dehydrogenase inhibitors as defined in the specification; B.2) Inhibitors of oxysterol binding protein as defined in the specification; B.3) Inhibitors of complex III at Qi site selected from: a) florylpicoxamid, and b) fenpicox-amid; B.4) Strobilurins as defined in the specification; B.5) Inhibitors of C14-demethylase in sterol biosynthesis as defined in the specification; B.6) Inhibitors of cell division and cytoskeleton as defined in the specification, B.7) Other compounds of unknown mode of action as defined in the specification; and B.8) N-[[2-fluoro-4-[(2S,3S)-2-hydroxy-3-(3,4,5-trichlorophenyl)-3-(trifluoromethyl)pyrrolidin-1-yl]phenyl]methyl]cyclopropanecarboxamide; wherein component 1) and component 2) are present in a weight ratio of from 1000:1 to 1:1000; methods and use of these mixtures for combating invertebrate pests such as insects, arachnids, nematodes and/or harmful fungi in and on plants, and for protecting such plants being infested with pests and/or harmful fungi.

Pesticidal mixtures comprising as active compounds 1) 1-[(1RS)-1,2-dimethylpropyl]-N-ethyl-5-methyl-N-pyridazin-4-yl-1H-pyrazole-4-carboxamide and 2) at least one further compound B selected from B.1) Succinate dehydrogenase inhibitors as defined in the specification; B.2) Inhibitors of oxysterol binding protein as defined in the specification; B.3) Inhibitors of complex III at Qi site selected from: a) florylpicoxamid, and b) fenpicox-amid; B.4) Strobilurins as defined in the specification; B.5) Inhibitors of C14-demethylase in sterol biosynthesis as defined in the specification; B.6) Inhibitors of cell division and cytoskeleton as defined in the specification, B.7) Other compounds of unknown mode of action as defined in the specification; and B.8) N-[[2-fluoro-4-[(2S,3S)-2-hydroxy-3-(3,4,5-trichlorophenyl)-3-(trifluoromethyl)pyrrolidin-1-yl]phenyl]methyl]cyclopropanecarboxamide; wherein component 1) and component 2) are present in a weight ratio of from 1000:1 to 1:1000; methods and use of these mixtures for combating invertebrate pests such as insects, arachnids, nematodes and/or harmful fungi in and on plants, and for protecting such plants being infested with pests and/or harmful fungi.

Fungicidal mixtures comprising, as active components, 1) 1-[2-[[1-(4-chlorophenyl)pyrazol-3-yl]oxymethyl]-3-methyl-phenyl]-4-methyl-tetrazol-5-one as compound I and 2)N-(5-chloro-2-isopropylbenzyl)-N-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carboxamide as compound II.

Fungicidal mixtures comprising, as active components, 1) 1-[2-[[1-(4-chlorophenyl)pyrazol-3-yl]oxymethyl]-3-methyl-phenyl]-4-methyl-tetrazol-5-one as compound I and 2)N-(5-chloro-2-isopropylbenzyl)-N-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carboxamide as compound II.

Fungicidal mixtures comprising, as active components, 1) 1-[2-[[1-(4-chlorophenyl)pyrazol-3-yl]oxymethyl]-3-methyl-phenyl]-4-methyl-tetrazol-5-one as compound I and 2)N-(5-chloro-2-isopropylbenzyl)-N-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carboxamide as compound II.

The present invention relates to herbicidally active pyridazine derivatives of Formula (I) as defined herein, as well as to herbicidal compositions comprising such derivatives, and the use of such compounds and compositions for controlling undesirable plant growth: in particular the use for controlling weeds, in crops of useful plants.

##STR00001##

The present invention relates to herbicidally active pyridazine derivatives of Formula (I) as defined herein, as well as to herbicidal compositions comprising such derivatives, and the use of such compounds and compositions for controlling undesirable plant growth: in particular the use for controlling weeds, in crops of useful plants.

##STR00001##

Arylcarboxamides of the general formula (I) are described as herbicides.

##STR00001##

In this formula (I), IV, X, Y and Z represent radicals such as alkyl and halogen.

Arylcarboxamides of the general formula (I) are described as herbicides.

##STR00001##

In this formula (I), IV, X, Y and Z represent radicals such as alkyl and halogen.