The present invention relates to a novel agricultural pesticidal composition. In particular, the present invention provides a pesticidal composition comprising combination of an insecticide and plant health promoting agent. The said combination is highly suitable for controlling unwanted animal pests, such as insects, acaricides and/or nematodes, and unwanted phytopathogenic fungi.

The present invention relates to pyrimidinium compounds of formula (1), to the stereoisomers, salts, tautomers and N-oxides thereof, their mixtures and to compositions comprising such compounds or mixtures. The invention also relates to methods and uses of these pyrimidinium compounds and of compositions thereof, for combating and controlling animal pests. Furthermore, the invention relates also to pesticidal methods of applying such substituted pyrimidinium compounds.

The pyrimidinium compounds of the present invention are defined by the following general formula (I):

##STR00001##

wherein R.sup.1, R.sup.2 and Het are defined as in the description.

The present invention relates to pyrimidinium compounds of formula (1), to the stereoisomers, salts, tautomers and N-oxides thereof, their mixtures and to compositions comprising such compounds or mixtures. The invention also relates to methods and uses of these pyrimidinium compounds and of compositions thereof, for combating and controlling animal pests. Furthermore, the invention relates also to pesticidal methods of applying such substituted pyrimidinium compounds.

The pyrimidinium compounds of the present invention are defined by the following general formula (I):

##STR00001##

wherein R.sup.1, R.sup.2 and Het are defined as in the description.

The present application relates to the compounds of formula (I), and the N-oxides, stereoisomers, tautomers and agriculturally or veterinarily acceptable salts thereof wherein the variables are defined in the claims. The compounds of formula (I), as well as the N-oxides, stereoisomers tautomers and agriculturally or veterinarily acceptable salts thereof are useful for combating or controlling invertebrate pests, in particular arthropod pests and nematodes. The application also relates to a method for controlling invertebrate pests by using these compounds and to plant propagation material and to an agricultural and a veterinary composition comprising said compounds.

##STR00001##

An object of the present invention is to provide a method which does not have a problem with safety and enables controlling various pests even at a low dosage, and a pest control agent composition and a pest control agent set which are suitable to be used for the method. In the pest control method of the present invention, at least one compound selected from a compound of formula (I) (wherein, in formula (I), R.sup.1 represents a substituted or unsubstituted C1-6 alkylthio group, a substituted or unsubstituted C1-6 alkylsulfinyl group, or the like, R.sup.2 represents a hydrogen atom or a substituted or unsubstituted C1-6 alkyl group, R represents a C1-6 haloalkyl group or a C2-6 haloalkenyl group, X represents a substituted or unsubstituted C1-6 alkyl group, a substituted or unsubstituted C2-6 alkenyl group, or the like, n represents any integer of 0 to 4, and Xs are the same or different when n is 2 or more) and a salt thereof is applied with an insecticidal or acaricidal active component to an object.

##STR00001##

An object of the present invention is to provide a method which does not have a problem with safety and enables controlling various pests even at a low dosage, and a pest control agent composition and a pest control agent set which are suitable to be used for the method. In the pest control method of the present invention, at least one compound selected from a compound of formula (I) (wherein, in formula (I), R.sup.1 represents a substituted or unsubstituted C1-6 alkylthio group, a substituted or unsubstituted C1-6 alkylsulfinyl group, or the like, R.sup.2 represents a hydrogen atom or a substituted or unsubstituted C1-6 alkyl group, R represents a C1-6 haloalkyl group or a C2-6 haloalkenyl group, X represents a substituted or unsubstituted C1-6 alkyl group, a substituted or unsubstituted C2-6 alkenyl group, or the like, n represents any integer of 0 to 4, and Xs are the same or different when n is 2 or more) and a salt thereof is applied with an insecticidal or acaricidal active component to an object.

##STR00001##

This invention relates to a liquid herbicidal composition comprising a non-aqueous solvent system, at least one sulfonylurea herbicide and at least one inorganic or C.sub.1-C.sub.12 organic lithium salt. The invention also relates to the use of an inorganic or C.sub.1-C.sub.12 organic lithium salt to improve chemical stabilisation of a sulfonylurea herbicide in a liquid composition comprising a non-aqueous solvent system.

This invention relates to a liquid herbicidal composition comprising a non-aqueous solvent system, at least one sulfonylurea herbicide and at least one inorganic or C.sub.1-C.sub.12 organic lithium salt. The invention also relates to the use of an inorganic or C.sub.1-C.sub.12 organic lithium salt to improve chemical stabilisation of a sulfonylurea herbicide in a liquid composition comprising a non-aqueous solvent system.

The present invention relates to novel active compound combinations comprising at least one known compound of the formula (I) ##STR00001##
and at least one further active compound, which combinations are highly suitable for controlling animal and microbial pests such as unwanted insects and/or unwanted acarida and/or unwanted nematodes.

The present invention relates to novel active compound combinations comprising at least one known compound of the formula (I) ##STR00001##
and at least one further active compound, which combinations are highly suitable for controlling animal and microbial pests such as unwanted insects and/or unwanted acarida and/or unwanted nematodes.