HK1038295A

HK1038295A - Process for treating and controlling crop ravagingcrop-damaging arthropods and composition that is useful for this process

Info

Publication number: HK1038295A
Application number: HK01109224.8A
Authority: HK
Inventors: L‧巴尔德斯; P‧托伦蒂诺; D‧洛博; A‧博斯琴; R‧迪克曼
Original assignee: 巴斯夫农业有限公司，荷兰，阿姆海姆，韦登斯维尔分公司
Priority date: 2000-03-08
Filing date: 2001-12-31
Publication date: 2002-03-15

Description

Method for treating and controlling arthropods harmful to crops and composition suitable for use in said method

The present invention relates to a method for controlling arthropods, in particular insects, especially insects that destroy crops, such as rice crops or fruit and vegetable garden crops; a method for protecting crops, in particular rice crops; a method for directly improving the yield of a protected treated crop; and compositions or products suitable for use in the above methods.

More precisely, the invention relates to the above-mentioned method, wherein a defined pesticide compound is used in combination with other defined pesticides; these methods generally combine the action of a pyrazole group-containing pesticidal compound (A) with the action of a pesticidal compound (B), particularly a pyrethroid-type pesticidal compound, in a preferential manner.

This document discloses methods of using a number of various insecticides, however, the known insecticide compounds used in the above methods, while all having some insecticidal effect, often do not solve many of the problems encountered by users using these products, and in particular do not provide users with a specific solution specifically tailored for a particular application.

International patent application WO95/22902 discloses certain insecticidal methods suitable for controlling termites, wherein certain defined compounds of the fiprole family and pyrethroids are used.

U.S. patent application US-09/396331 also discloses methods for controlling diabrotica which destroys corn crops, using a defined pyrazole and certain pyrethroid compounds.

However, these patents do not provide a satisfactory solution to the problems encountered in combating or controlling insects which destroy crops, particularly with respect to specific insecticidal methods.

One of the problems encountered in the protection of crops against harmful arthropods, in particular against pests, is: it is desirable to reduce the amount of active ingredient used while ensuring a satisfactory, albeit not higher, effect. However, it is often necessary to broadcast or use large amounts of the abovementioned pesticidally effective active ingredients.

Another problem encountered is the need to obtain effective active compositions which are effective in killing a wide range of pests which are capable of destroying or destroying crops.

Another problem encountered relates to the problem of ageing of the active ingredients used for the protection of crops: it is desirable that the effective active ingredients used are capable of exerting their insecticidal effect immediately or substantially immediately upon application to the crop plants, and also capable of maintaining their insecticidal effect for a prolonged period of time, so as to have sufficient insecticidal and crop-preserving effects during this period.

Another problem encountered is that in practice some pesticidally effective active ingredients do not have an immediate pesticidal effect, but only act after a certain period of time has elapsed after use. Thus, the pests have the opportunity to multiply in large quantities before the effective active ingredient used has not yet been put into effect.

Another problem encountered with the use of certain pesticidally effective active ingredients is that these active ingredients have only a curative effect. Users are therefore forced to pay constant attention to observing and carefully monitoring the condition of the crop in order to determine the exact timing of pest management.

Another important problem is that some pesticidally effective active ingredients have only a preventive effect. Consequently, the user is forced to broadcast large amounts of such active ingredients, which subsequently proves to be useless.

A problem encountered in the use of certain pesticidally effective active ingredients is the occurrence of a phenomenon of restoration of reproduction of the treated pests, which is fatal to the user, since the user first sees a large reduction in the number of harmful pests treated, but then finds a large increase in the number of these pests restored to reproduction, which, although infrequently, is devastating once it occurs.

Another problem encountered is that with certain known pesticidal compounds it is difficult to find an effective way of treating several pests which may damage a crop simultaneously.

In particular, it is difficult to provide an effective pesticidal method for treating a range of pests that destroy rice crops, especially pests of the families plant hoppers, noctuidae, stem borer and leafroller moths.

Many of the problems mentioned above are often accompanied by problems related to environmental protection. The users of the above pesticidally effective active ingredients, as well as the consumers of products made from these crops, are becoming increasingly sensitive to environmental problems.

Another problem related to the use of many pesticides is the cumulative effect of two or more of the problems mentioned above, and indeed, these problems are more difficult to solve when they accumulate. Because the solutions one can consider may in some cases be contradictory or even contradictory.

Furthermore, it is generally always desirable to improve the range and efficacy of activity of compounds having pesticidal action, or to enhance the range and efficacy of activity. Wherein the compounds are used in combination together so that a higher performance product or combination can be obtained; it would also be desirable to improve methods for killing and controlling insects that destroy crops, which methods are optimally tailored to the specific needs of the user.

It is also desirable to avoid the emergence of such pesticides that exhibit resistance to a portion of the pests.

It is also always desirable to provide users of such pesticide compounds with an ever increasing number of pesticidal methods for killing or controlling pests, particularly in the agricultural field, especially against damage caused by such pests destroying crops.

It is also highly desirable to improve or better control the efficiency or duration of action of these pesticidal compounds.

It would also be desirable to provide users of such pesticidal compounds with specific methods of killing and controlling pests under specific application conditions, particularly according to the environmental conditions of the crop plants to be treated for protection or according to the condition of the crop plants or pests that destroy such crop plants, or according to the extent of infection and infestation by such pests.

It is also highly desirable to have a method of controlling pests with so-called overwhelming insecticidal efficacy. The so-called overwhelming insecticidal efficacy herein includes a fast-reacting insecticidal action, usually measured as a rapid reduction in the number of insects. This overwhelming insecticidal effect is recognized by the ability of an effective active substance to produce a satisfactory insecticidal effect within a few hours.

It is also desirable that the pesticidal action of the pesticidally effective active ingredients used have a long-lasting pesticidal action over time.

The present invention can provide a solution to all or part of the above-mentioned problems. The invention also achieves all or part of the objects set forth above.

The present invention relates generally to specific methods for treating and controlling arthropods that destroy crops, and in particular to pesticidal methods. Wherein a pyrazolyl-containing pesticide compound (A) and a pyrethroid pesticide compound (B) are used.

The above-described method according to the invention is most suitable for use in the agricultural sector, in particular for plant protection.

The protection or treatment method according to the invention uses a pesticidal compound (A) of the family of phenylpyrazoles.

The method according to the invention uses a pesticide compound (A) of the following formula (I),

in the formula R₁represents-CN or methyl or-C (S) NH₂A radical or a radical-C (= N-Y) Z;

R₂is represented by- (SO)_nR₃；

R₃Represents an alkyl or haloalkyl group;

R₄can be selected from a hydrogen atom, a halogen atom and an-NR₅R₆,-C(O)OR₇,-S(O)_mR₇Alkyl, haloalkyl, -OR₈or-N = C (R)₉)(R₁₀) A group;

R₅and R₆May be chosen from a hydrogen atom, an alkyl OR haloalkyl, - (CO) alkyl, - (CO) OR₇and-S (O) rCF₃(ii) a Or R₅And R₆May form a divalent group which may be interrupted by one or more heteroatoms;

R₇can be selected from one alkyl and one haloalkyl;

R₈can be selected from an alkyl group, a haloalkyl group and a hydrogen atom;

R₉optionally one hydrogen atom and one alkyl group;

R₁₀may be selected from a heteroaryl group optionally substituted with one or more hydroxy, halogen, -O-alkyl, -S-alkyl, cyano or alkyl groups or combinations thereof and a phenyl group;

x is selected from the group consisting of a nitrogen atom and C-R₁₂A group;

y may be selected from substituted or unsubstituted hydroxy, amino, aminocarbonyl, alkoxy, arylcarbonyl, alkylcarbonyl, alkoxycarbonyl, carbamoyl, arylcarbamoyl, alkylcarbamoyl and pyrazolyl;

z may be selected from the group consisting of hydroxy, amino, aminocarbonyl, alkoxy, arylcarbonyl, alkylcarbonyl, alkoxycarbonyl, carbamoyl, arylcarbamoyl and alkylcarbamoyl;

R₁₁and R₁₂Are each selected from a halogen atomAnd a hydrogen atom;

R₁₃is selected from a halogen atom, a haloalkyl or haloalkoxy group, -S (O) qCF₃and-SF₅；

m, n, q and r are independently selected from 0,1 and 2;

with the provisos that: when R is₁When represents a methyl group, then R₃Represents a haloalkyl radical, R₄represents-NH₂,R₁₁Represents Cl, R₁₃represents-CF₃And X represents N;

the alkyl and alkoxy radicals in the above formula (I) are preferably lower alkyl and alkoxy radicals, that is to say radicals having from 1 to 4 carbon atoms;

likewise, the haloalkyl and haloalkoxy groups mentioned above preferably also have 1 to 4 carbon atoms;

the above-mentioned haloalkyl and haloalkoxy groups may carry one or more halogen atoms; such groups include-CF₃and-OCF₃。

According to a preferred form of the invention, the above process employs a pesticide compound (a) of formula (i) wherein:

R₁represents-CN; and/or

R₄represents-NR₅R₆(ii) a And/or

R₅And R₆Are each selected from a hydrogen atom, an alkyl or haloalkyl group and a-C (O) alkyl group; and/or

X represents-C-R₁₂(ii) a And/or

R₁₃Is selected from a halogen atom, a haloalkyl or haloalkoxy group and-SF₅。

According to a particularly preferred mode, the method of protection or treatment of the present invention uses, as the above-mentioned pesticidal agent compound (A), a 5-amino-3-cyano-1- (2, 6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinylpyrazole compound whose chemical name is Fiproni.

According to another preferred embodiment of the process of the invention, the compound (B) used is a compound of the following formula (II).

In the formula₁And R₂Each represents a C₁-C₈Alkyl or a C₁-C₈A haloalkyl group or a halogen atom or a substituted or unsubstituted phenyl group; and/or

R₃Represents a-CN group or a hydrogen atom or a C₁-C₈Alkyl groups of (a); and/or

R₄Represents a substituted or unsubstituted phenyl group.

According to another preferred embodiment, the compound (B) used in the process of the invention is a compound of formula (ii) wherein:

R₁and R₂Respectively represents a bromine atom or a chlorine atom or a methyl group or an isopropyl group or a p-chlorophenyl group or a trifluoromethyl group; and/or

R₄Represents a substituted or unsubstituted phenoxybenzyl group.

R₄represents a halophenoxybenzyl group.

The above-mentioned compound (B) of formula (II) may be in the form of a certain isomer or a mixture of several isomers, or even in the form of a mixture of several compounds of formula (II) during the application in the process of the invention.

However, the pyrethroid family of compounds used in the protection or treatment method of the present invention as the pesticide compound (B) may be a compound selected from the group consisting of:

bifenthrin, 2-methyldiphenyl-3-methyl- (Z) - (1RS,3RS-3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate;

cyfluthrin, i.e., (R, S) - α -cyano-4-fluoro-3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

cyhalothrin, i.e., (R, S) - α -cyano-3-phenoxybenzyl (Z) - (1RS,3RS) - (2-chloro-3, 3, 3-trifluoropropenyl) -2, 2-dimethylcyclopropanecarbox-ylate;

cypermethrin, i.e., (R, S) - α -cyano-3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

α -Cypermethrin, a racemic mixture consisting of (S) α -cyano-3-phenoxybenzyl (1R,3R) -3- (2, 2-chloroethenyl) -2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S,3S) -3- (2, 2-dichlorovinyl-2, 2-dimethylcyclopropanecarboxylate;

β -Cypermethrin, i.e. a mixture of two enantiomeric pairs in a 2: 3 ratio of (S) - α -cyano-3-phenoxybenzyl (1R) -cis-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S) -cis-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate with (S) - α -cyano-3-phenoxybenzyl (1R) -trans-3- (2, 2-dichlorovinyl) 2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S) -trans-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

theta-Cypermethrin, a mixture of the enantiomers, (R) -alpha-cyano-3-phenoxybenzyl (1S,3R) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate and (S) -alpha-cyano-3-phenoxybenzyl (1R,3S) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate in a 1: 1 ratio;

Z-Cypermethrin, a mixture of stereoisomers (S) - α -cyano-3-phenoxybenzyl (1RS,3RS,1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, in which the ratio of the enantiomers (S) - (1RS,3RS) and (S) - (1RS,3SR) is between 45/55 and 55/45, respectively;

delta-methrin, i.e. (S) - α -cyano-3-phenoxybenzyl (1R,3R) -3- (2, 2-dibromovinyl) -2, 2-dimethylcyclopropanecarboxylate;

fenpropathrin, i.e. (RS) - α -cyano-3-phenoxybenzyl 2,2,3, 3-tetramethylcyclopropanecarboxylate;

fenvalelate, i.e., (RS) - α -cyano-3-phenoxybenzyl (RS) -20 (4-chlorophenyl) -3-methylbutyrate;

flumethrin, i.e., -cyano-4-fluoro-3-phenoxybenzyl;

permethrin, 3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

phenothrin, 3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -2, 2-dimethyl-3- (2-methylpropenyl-1) -cyclopropanecarboxylate;

tefiuthrin, i.e., 2,3,5, 6-tetrafluoro-4-methylbenzyl (Z) - (1RS,3RS) -3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate;

tralomcthrin, i.e. (S) - α -cyano-3-phenoxybenzyl (1R,3S) -2, 2-dimethyl-3- [ (RS) -1,2,2, 2-tetrabromoethyl ] cyclopropanecarboxylate;

flucythrinate, i.e., (RS) - α -cyano-3-phenoxybenzyl (S) -2- (4-difluoromethoxyphenyl) -3-methylbutyrate;

tau-fluvalinate, i.e. (RS) -alpha-cyano-3-phenoxybenzyl N- (2-chloro-2, 2, 2-trifluoro-p-tolyl) -D-valine ester.

Furthermore, some of the pyrethroid compounds useful in the method of the invention may themselves have some pesticidal properties or pesticidal activity, and may also be suitable for agricultural use, particularly for treating or protecting crops.

In the various methods according to the present invention, pesticidal agent compounds (a) and (B) are used in effective doses rather than in phytotoxic doses.

As regards the pyrazolyl-containing pesticide compounds (A) used in the various methods according to the invention, reference is made to the disclosures in European patent or patent application EP-A-0295117, EP-A-0460940 or EP-A-0484165 and International patent application WO98/28279, respectively.

In addition, for the preparation method of the pesticidal compound (B), reference may be made to the electronic pesticide manual, version 1.0 (edited by the british crop protection commission, by the client Tomlin).

The pesticidal agent compound (a) used in the present specification may be one of the following expressions, except as described only: an active substance or compound or a pesticide compound or an active material or pesticide material. Such expressions do not depart from the spirit of the invention because of the pesticidal properties of these compounds, substances or materials.

In practicing the method of the present invention, the above-mentioned various pesticidal substances (A) and (B) are rarely used alone in practice.

The pesticidally effective active substances (A) and (B) used in the process of the invention are generally used in combination with solid or liquid carriers which may be used in particular in the agricultural sector, but also in combination with at least one surfactant and/or one or more auxiliaries.

The process according to the invention, which is particularly suitable for combating pests and for protecting plants, uses at least one of the abovementioned insecticide compounds (A) or (B) as active substance and preferably together with an agriculturally acceptable solid or liquid carrier and/or an agriculturally acceptable surfactant.

The above-mentioned carrier which is preferably used may be a common inert carrier; likewise, a more suitable surfactant may be one that is particularly suitable for treating and protecting crops, such as those used in the present invention, in a formulation that is common in agricultural compositions.

The present specification will subsequently describe in detail various compounds or co- (adjunctive) drugs which may be used in combination with compounds (a) and (B) for use in the present invention.

Generally, the methods according to the invention use formulations containing 0.00001% to 100%, or 0.001% to 80% of the pesticidal compounds (a) and (B), either in combination or separately on their own.

The process according to the invention is generally carried out by combining pesticide compound (A) and pesticide compound (B) together at the same time.

Unless otherwise stated, all proportions or percentages stated or used in the present specification or claims are by weight.

The pesticidal compounds (a) and (B) used in the process of the present invention may generally be used in combination with either solid or liquid additives according to conventional formulation techniques to produce product or composition formulations particularly useful in agriculture.

A preferred method in the treatment and/or protection method according to the invention is a method for treating and/or protecting a crop.

The method according to the invention can be carried out in many ways, depending on the number of application methods or also depending on the application technology, in order to protect plants or crops of different types, species or groups, or to kill or control arthropods of different types or groups, in particular harmful species.

Many applications which are preferred for the process of the invention include simultaneous, separate, alternating or sequential applications.

However, the application methods generally applicable to the method of the present invention are preferably application methods using the pesticide compounds (A) and (B) simultaneously.

However, another application method suitable for the method of the present invention is a method of alternately applying the insecticide compounds (A) and (B).

Another application method suitable for the process of the present invention relates to the continuous application of the pesticidal compounds (A) and (B); this continuous application method may be carried out in such a manner that the insecticide compound (B) is applied several times, followed by several applications of the insecticide compound (B). Needless to say, the reverse continuous application method, i.e., the method of applying the insecticide compound (B) several times followed by applying the insecticide compound (A) several times, also constitutes the method of the present invention.

The various inventive methods mentioned immediately above may also be carried out in whole or in part, in combination or association with one another. The person skilled in the art is fully aware of how to determine the combination or association of the application methods according to the invention while being best adapted to the application of the pesticide compounds (a) and (B) he envisages.

In addition to the many application methods according to the method of the invention just mentioned above, the method of the invention can also be applied to a number of application processes; the application process may include powdering, dipping, spraying, smoking or atomizing, etc.

Other methods of application suitable for the method of the invention depend in particular on the treated part of the plant or crop to be treated.

Thus, the method according to the invention can be used for treating or protecting propagation material or seeds of plants, in particular grains, tubers or rhizomes; for treating the roots of plants or for treating the stem roots or leaves of plants; it may also be used to treat roots or fruits or other parts of plants of practical economic or agronomic value.

Furthermore, the method of the invention can be used for treating plants of different growth stages, in particular for treating seeds, seedlings or seedlings to be planted, plants or plants.

The method of the invention may also be used to treat the soil in which cultivation is or is to be carried out.

However, the process of the present invention is particularly suitable for applying the insecticide compounds (A) and (B) to the foliage of the plants to be treated, where the treatment is preferably carried out by spraying.

The method of the invention is also particularly suitable for treating seeds.

The method of treating or protecting plants according to the invention is particularly suitable for treating or protecting cereal or garden crops, in particular rice, wheat, barley, rye, but also maize, sorghum, sunflower, soybean, or cotton, peas, oilseed rape, potatoes, vegetables or fruits, sugar beet, onions, cabbage, tomatoes, beans, lettuce and the like, with the aid of the insecticide compounds (A) and (B).

When various kinds of rice are treated by the method of the present invention, the method for treating or protecting plants can give particularly good results regardless of whether the rice varieties are hybrid varieties or not. The method according to the invention for treating or protecting OryzaSativa rice seeds also gives particularly satisfactory results.

As previously stated in this specification, the methods of the invention are applicable to both prophylactic and therapeutic treatments.

The method of the present invention using the insecticide compound (a) and the insecticide compound (B) is suitable for killing or controlling arthropods, particularly harmful insects.

Thus, the method of the invention is particularly suitable for killing or controlling insects of the families of the planthopper family, in particular brown rice planthoppers, brown rice planthoppers and white back rice planthoppers; and/or cicadae, especially decpiens microtopodia, bigemouth leafhopper, leafhopper nigricans and brown planthopper of Oryza; and/or the family of the snout moth's larva, in particular the tryporyza incertulas, the rice stem borers, the rice leaf rollers, the american rice borers, the chilo suppressalis, the sorghum borers and the september borers; cydiodae, in particular, Leptosphaeria bicolor, Trigonopsis stenoptera and Trigonopsis radicicola; and/or noctuidae, in particular the greater borer, african greater borer and sorghum borer; and/or pleiomorpha, especially rice black bugs and aleya rice black bugs; and/or diamondback moth, in particular diamondback moth; and/or tortricidae, in particular leafminer; and/or the family of the gall midicidae, in particular the genus Orselia and the rice gall midicidae.

According to another mode of operation of the method of the invention, it is possible to adapt it for use in killing or controlling harmful insects which grow in the soil, in particular those which have at least one growth phase in the soil and in the meantime damage crops.

Harmful insects of the above-mentioned kind which grow in the soil may be of the families Aeroolamai, Nostoc, Elaeagnaceae, Strobilanthus, Zaocys, Amaranthus, Douglas, Phlebopus, Elephantopus, Dolichoris, Diapres sp, Phlebopus, Carduus, Boraginaceae, Gryllotalpa, Homopsis, Pleuroptera, Spodoptera, Ammopara, Zea (wild) Oenothera, Phyllophora, Phlebopus, Phyllotrichia, Phyllostachys, Lepidotia, Lepidioides, Leptochloa, Lecanicillium, Lecanis, Spodoptera, Spodopterocarpus, Spodoptera, and Trichosporoides.

The method according to the invention is very suitable for: killing lepidoptera, in particular pink bollworm, butterflies, winter moths, cabbage moths, e.g. diamond back moth, tenebrio molitor, brown tail yellow moth, poisonous moths, e.g. cotton leaf miner, orange leaf miner, noctuids, e.g. lilac daphne, groundsella, brown noctuid, cotton spotted moth, cotton bollworm, e.g. Helicoverpa armigera, Helicoverpa Zea, beet armyworm, cabbage looper, eyeworm, striped noctuid, prodenia litura, e.g. along charlin spodoptera litura, spotted noctuid, beet armyworm, pink moth, apple moth, pink moth, snout moth's larva, e's larva, e.g. striped rice borer, nubilalis, pink moth, snout moth, stem borer, e's webworm, cabbage moth, pink moth's moth, cabbage moth, pink moth's, cabbage moth, pink moth's, pink moth's, pink, such as oak green leafroll; insect pests of the order Coleoptera, in particular Debresia furcifera, Valenchus fasciatus, Demossbeckia soja, Homophorus domestica, Alternaria aspera, Eichhornia sanguinea, Arctochilus armeniaca, Arctochilus striatus, Arctochilus elegans, corn rootworm, Eleocharis brassicae, Hipponica nigra, Cryptomeria, such as Cryptomeria betanae, Geranium, Arctochilus variegata, such as Euonymus alatus, Rhynchophyllus cantoniensis, Arctochilus brassicae, Eichopus cerifera, such as Rhynchophorus ophytus, Araneus spp, such as Rhynchophorus formosanus, Ascophyllus brassicae, Eicha, Peptomeria purpurea, such as Rhynchophyllus pinus, Rhynchophyllus ferrugineus, such as Dilletia papyrifera, Rhynchophyllus, Eichthyophytus spp, Eleophora, Eichhornia purpurea, Eleophora, leptocarpum, monarda, gill-angle cockchafer, elephantopus, brown-haired chafer, striga, meadowrue, serenoa, click beetles, striped flea, gill-angle cockchafer, limpet turtle, rhizobia, elephantopus, e.g. costelytra zealandica; or- -killing Diptera, in particular Drosophila melanogaster, Chrysomya, Pikeror, Tannia sp., Garden Mosquitoes, Sweden Mylopharyngodon, Musca, Chrysomya, Mediterranean fruit fly, Oleanopsis oleaster, Daphne mosquito, Sclerotia, Tephrosia, Blanidae, Exophraella funiculorum, Oleraceae big mosquito.

According to preferred embodiments of the methods of the present invention, these methods can kill the aforementioned harmful insects simultaneously. In this case, these methods belong to methods for controlling a group of pests.

According to a preferred embodiment of the method of the present invention, the above method for controlling a group of pests is for treating or protecting a designated crop.

The method according to the invention is for controlling or treating pests that damage rice crops.

The method according to the invention for controlling or killing pests can be applied to the above-mentioned pests in various stages of their life or growth, in particular to control their eggs, larvae, pteromalus or nymphs in their growth stages, or also to control arthropods or insects during their adult life.

Furthermore, the above methods may also be used to kill individually isolated insects or to kill colonies of such insects, or to treat infections by such insects.

The amounts of the pesticide compounds (A) and (B) used in the treatment or protection process according to the invention can vary within wide limits. They depend on the type of crop, the extent of infestation, toxicity and pathogenicity of the pests, and also on the climate and soil conditions.

In the treatment or protection method according to the invention, the pesticide compound (A), preferably Fipronil, is used in a dose of preferably 0.5 to 500 g/ha, and preferably 2 to 100 g/ha. The pesticidal compound (B) used is preferably a compound selected from the group consisting of: bifenthrin, cyfluthrin, cyhalothrin, cypermethrin, α -cypermethrin, β -cypermethrin, θ -cypermethrin, Z-cypermethrin, δ -methrin, fenpropathrin, fenvalete, flumethrin, permethrin, phenothrin, tefluthrin, tralomethrin, flucythrin and τ -fluvalinate, in an amount of 0.5 to 1000 g/ha, preferably 1 to 500 g/ha.

In the treatment or protection process according to the invention, the pesticide compounds (A) and (B) are used simultaneously, the amount of pesticide compound (A) being from 2 to 100 g/ha and the amount of pesticide compound (B) being from 1 to 500 g/ha.

The weight ratio of A/B is usually 0.0005-250, preferably 0.05-10; the weight ratio of B/A is usually 0.004 to 2000, preferably 0.1 to 20.

As mentioned above, the above-mentioned A/B ratio is a weight ratio of the amounts of the pesticidal compounds (A) and (B).

According to a preferred embodiment of the process of the invention, fipronil and δ -methrin are used in a weight ratio of 0.1 to 5, preferably 0.5 to 3; similarly, the ratio of fipronil to Cypermethrin used is 0.05 to 10, preferably 0.15 to 6.

The amounts of the pesticidal compounds (A) and (B) used in the treatment or protection method according to the invention give particularly satisfactory results in the application method to foliage after dilution in water and application at a rate of 50-1500 l/ha or 200-800 l/ha.

In the treatment or protection method according to the invention, the insecticide compounds (A) and (B) can be used simultaneously, but they can also be combined immediately when the method according to the invention is carried out.

According to another embodiment of the process of the present invention, it is also possible to use the pesticide compounds (A) and (B) separately.

Another aspect of the present invention relates to pesticidal compounds which may be used in the method of the present invention which is the subject of the above developments.

In a particularly advantageous manner, the compositions according to the invention comprise an insecticide compound (a) and an insecticide compound (B) as defined above.

The composition according to the invention preferably contains an insecticide compound (A) having a pyrazolyl group and an insecticide compound (B) consisting of a family of allethrins to be eradicated.

The compositions according to the invention preferably comprise pesticide compounds (A) of the phenylpyrazole family.

The above-mentioned composition according to the invention preferably contains an insecticide compound (A) of formula (I):

wherein R in the formula₁represents-CN or methyl or-C (S) NH₂A group or-C (= N-Y) Z;

R₂represents-S (O)_nR₃；

R₃Represents an alkyl or haloalkyl group;

R₄can be selected from oneA hydrogen atom, a halogen atom and an-NR₅R₆,-C(O)OR₇,-S(O)_mR₇Alkyl, haloalkyl, -OR₈or-N = C (R)₉)(R₁₀)；

R₅And R₆Each selected from a hydrogen atom, an alkyl OR haloalkyl, -C (O) alkyl, -C (O) OR₇and-S (O) rCF₃(ii) a Or R₅And R₆Divalent groups that may together form a barrier to one or more heteroatoms;

R₇is selected from the group consisting of an alkyl group and a haloalkyl group;

R₈is selected from the group consisting of an alkyl group, a haloalkyl group and a hydrogen atom;

R₉is selected from a hydrogen atom and an alkyl group;

R₁₀is selected from a heteroaryl group which may be substituted by one or more hydroxy, halogen, -O-alkyl, -S-alkyl, cyano or alkyl groups or combinations thereof and a phenyl group;

y is selected from the group consisting of substituted or unsubstituted hydroxy, amino, aminocarbonyl, alkoxy, arylcarbonyl, alkylcarbonyl, alkoxycarbonyl, carbamoyl, arylcarbamoyl, alkylcarbamoyl and pyrazolyl;

z is selected from the group consisting of hydroxy, amino, aminocarbonyl, alkoxy, arylcarbonylcarbonyl, alkylcarbonyl, alkoxycarbonyl, carbamoyl, arylcarbamoyl and alkylcarbamoyl;

R₁₁and R₁₂Are respectively selected from a halogen atom and a hydrogen atom;

m, n, q and r are independently selected from 0,1 and 2;

the alkyl and alkoxy groups in formula (I) are preferably lower alkyl and alkoxy groups, that is to say groups having from 1 to 4 carbon atoms;

likewise, haloalkyl and haloalkoxy groups preferably have 1 to 4 carbon atoms;

the above-mentioned haloalkyl and haloalkoxy groups may carry one or more halogen atoms; such groups preferably contain-CF₃and-OCF₃。

According to another preferred embodiment, the composition of the invention comprises a pesticide compound (A) of formula (I):

in the formula₁represents-CN; and/or

R₄represents-NR₅R₆(ii) a And/or

R₅And R₆Each of which may be selected from a hydrogen atom, an alkyl OR haloalkyl group and-C (O) alkyl and (O) OR; and/or

X represents-C-R₁₂(ii) a And/or

According to another particularly preferred embodiment the composition of the invention comprises 5-amino-3-cyano-1- (2, 6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinylpyrazole, whose chemical name is Fipronil, as pesticide compound (A).

The pyrethroid compounds as the insecticide compound (B) in the composition of the present invention are preferably those of the formula (II).

In the formula₁And R₂Respectively represent-C₁-C₈Alkyl or a C₁-C₈A halogen atom or a substituted or unsubstituted phenyl group;

R₃represents a-CN group or a hydrogen atom or a C₁-C₈Alkyl groups of (a);

R₄represents a substituted or unsubstituted phenyl group.

According to another embodiment of the composition of the present invention, the above compound (B) is a compound of formula (II):

in the formula₁And R₇Respectively represents a bromine atom or a chlorine atom or a methyl group or an isopropyl group or p-chlorophenyl group or a trifluoromethyl group; and/or

R₄Represents a substituted or unsubstituted phenoxybenzyl group.

According to another preferred embodiment of the composition of the invention, a compound (B) of formula (II) is used:

in the formula R₄Represents a halophenylbenzyl group.

The compound (B) of formula (II) in the composition according to the invention may be a specific isomer, a mixture of several isomers or even a mixture of several compounds of formula (II).

However, the pyrethroid compound as the insecticide compound (B) in the composition of the present invention is preferably selected from the group consisting of:

bifenthrin, 2-methyldiphenyl-3-methyl- (Z) - (1RS,3RS-3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate, wherein the A/B ratio is 0.25-0.9;

cyfluthrin, i.e. (R, S) - α -cyano-4-fluoro-3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, wherein the A/B ratio is 0.25-0.9;

cyhalothrin, i.e. (R, S) - α -cyano-3-phenoxybenzyl (Z) - (1RS,3RS) - (2-chloro-3, 3, 3-trifluoropropenyl) -2, -dimethylcyclopropanecarbox-yl ester wherein the ratio of A/B is 0.1-5;

cypermethrin, i.e., (R, S) - α -cyano-3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, where the A/B ratio is 0.25-0.9;

α -Cypermethrin, an exothermal mixture consisting of (S) - α -cyano-3-phenoxybenzyl (1R,3R) -3- (2, 2-chloroethenyl) -2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S,3S) -3- (2, 2-dichlorovinyl-2, 2-dimethylcyclopropanecarboxylate;

β -Cypermethrin, i.e. a mixture of the two enantiomeric pairs (S) - α -cyano-3-phenoxybenzyl (1R) -cis-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S) -cis-3- (2, 2-dichlorovinyl) -2, -dimethylcyclopropanecarboxylate with (S) - α -cyano-3-phenoxybenzyl (1R) -trans-3- (2, 2-dichlorovinyl) 2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S) -trans-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

theta-Cypermethrin, a mixture of the enantiomers (R) -alpha-cyano-3-phenoxybenzyl (1S,3R) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate and (S) -alpha-cyano-3-phenoxybenzyl (1R,3S) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate in a 1: 1 ratio;

Z-Cypermethrin, a mixture of stereoisomers (S) - α -cyano-3-phenoxybenzyl (1RS,3RS,1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, wherein the ratio of the enantiomers (S) - (1RS,3RS) and (S) - (1RS,3SR) is in the range of 45/55-55/45, respectively;

delta-methrin, i.e. (S) - α -cyano-3-phenoxybenzyl (1R,3R) -3- (2, 2-dibromoethenyl) -2, 2-dimethylcyclopropanecarboxylate;

fenpropathrin, i.e. (RS) - α -cyano-3-phenoxybenzyl 2,2,3, 3-tetramethylcyclopropanecarboxylate, in a ratio of 0.1-5;

fenvalerate, (RS) - α -cyano-3-phenoxybenzyl (RS) -2- (4-chlorophenyl) -3-methylbutyrate in a ratio of 0.15-0.45;

flumethrin, i.e., -cyano-4-fluoro-3-phenoxybenzyl;

permethrin, 3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, in a ratio of 0.1-0.8;

tefluthrin, i.e. 2,3,5, 6-tetrafluoro-4-methylbenzyl (Z) - (1RS,3RS) -3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate, in a ratio of 0.1-5;

tralomethrin, i.e. (S) - α -cyano-phenoxybenzyl (1R,3S) -2, 2-dimethyl-3- [ (RS) -1,2,2, 2-tetrabromoethyl ] cyclopropanecarboxylate, in a ratio of 0.6-0.9;

flucythrinatc, i.e. (RS) - α -cyano-3-phenoxybenzyl (S) -2- (4-difluoromethoxyphenyl) -3-methylbutyrate;

The pesticidal compounds (a) and (B) used in the compositions of the present invention are generally used in combination with one or more carriers and/or one or more substances that facilitate the formation of their formulations. The compositions of the present invention may comprise up to 99% of a carrier and/or up to 25% of one or more surfactants and/or up to 25% of one or more formulating agents.

The compositions of the present invention generally contain from 0.00001% to 100% or from 0.001% to 80% of the pesticidal compound (A) or (B), wherein these compounds may be used together in combination or the two types of active ingredients may be used separately.

If the two active substances (A) or (B) mentioned above are used in combination, the compositions according to the invention can be used in the amounts indicated above, but the A/B ratio can also be from 0.0005 to 250, preferably from 0.05 to 10.

The compounds (A) or (B) in the compositions of the invention are generally used in combination with one or more carriers and optionally with one or more surfactants and one or more formulatory agents or adjuvants.

The term "carrier" as used in this specification denotes an organic or inorganic, natural or synthetic substance which, together with the active substances (A) and/or (B), constitutes the composition of the invention and renders the composition readily applicable to plants or seeds or soil.

The support is inert and should be agriculturally acceptable and particularly suitable for the plants to be treated.

The carrier which can be formulated with the compounds (A) and/or (B) in the process of the invention can be solid or liquid.

Examples of solid carriers include natural or synthetic silicates, resins, waxes, clay particles or fines, in particular particles or fines of kaolin clay, diatomaceous earth, bentonite or acid clay, synthetic hydrated silica, talc, ceramics, other minerals such as mica, quartz, sulfur, active coke, calcium carbonate and hydrated silica or industrial fertilizers such as ammonium sulfate, ammonium phosphate, ammonium nitrate, urea or ammonium chloride.

As liquid carriers there may be mentioned water, alcohols, in particular methanol and ethanol, ketones, in particular acetone, methyl ethyl ketone or cyclohexanone, petroleum fractions, aromatic hydrocarbons such as benzene, toluene, xylene, ethylbenzene or methylnaphthalene, nonaromatic hydrocarbons such as hexane, cyclohexane, kerosene or gasoline, liquefied gases, esters such as ethyl acetate and butyl acetate, nitriles such as acetonitrile and isobutyronitrile, ethers such as diisopropyl ether and dioxane, amides such as N, N-dimethylformamide and N, N-dimethylacetamide, halogenated hydrocarbons such as dichloromethane, trichloroethane and carbon tetrachloride, dimethyl sulfoxide and vegetable oils such as soybean oil and cottonseed oil.

The surfactant may be emulsifier, dispersant, and wetting agent, and they may be ionic or nonionic.

They include polycarboxylates, lignosulphonates, phenolsulphonates or naphthalenesulphonates, polycondensates of ethylene oxide with aliphatic alcohols or aliphatic acids or fatty amines, substituted phenols, in particular alkylphenols or arylphenols, salts of thiosuccinic esters, taurine derivatives, in particular alkyl taurates, polyoxyethylated phosphates of alcohols or phenols; it may also include, in particular, salts of alkyl sulfonates, alkyl aryl ethers, and polyoxyethylated derivatives thereof, polyethylene glycol ethers, polyol esters, sugar derivatives, alcohols, and the like.

The addition of at least one surfactant is essential when at least one of the active substances and/or inert carriers is insoluble, in particular insoluble in water, and the vectoring agent when applied is water.

In the compositions of the invention, it is possible to use, in combination with compounds (A) and/or (B), other various ingredients or agents, such as protective colloids, binders, thickeners, thixotropic agents, penetrating agents, stabilizers including isopropyl hydrogen phosphate, 2, 6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4-methoxyphenol and 3-tert-butyl-4-methoxyphenol, mineral or vegetable oils, their fatty acids or esters, sequestering agents, dispersants such as casein, gelatin, sugars, in particular starch, gum arabic, certain cellulose derivatives or alginic acid, lignin derivatives, bentonite, water-soluble synthetic polymers, in particular polyvinyl alcohol, polyvinylpyrrolidone, polycarboxylic acids and the like, and other known active substances having pesticidal properties, in particular insecticides or fungicides; or with substances which promote plant production, in particular fertilizers; or with substances that regulate the growth of plants or insects.

The compositions according to the invention have various forms, in particular solid or liquid forms.

The compositions according to the invention can thus be formulated in many different formulations, for example as oily solutions, emulsion concentrates, wettable powders, fluid formulations, especially aqueous dispersions or emulsions, granules, powders, aerosols, fumigant formulations, including natural fumigant formulations or fumigant formulations with chemical reactions, aerosol formulations, especially spray formulations, very low volume formulations, pastes, emulsions, concentrated suspensions or mixtures, combinations of these various forms of formulations, and the like.

In powder formulations for powdering or dispersization, the content of the insecticide compounds (a) and (B) may be up to 100%; likewise, in granular formulations, in particular those prepared by extrusion, compaction, impregnation of the granular carrier or by powder granulation, the content of the pesticide compound (A) and/or (B) in the granular formulations of the invention is generally from 0.5 to 80%.

The compositions of the invention having insecticidal efficacy can be regarded as concentrated compositions and are in the form of emulsified concentrates or soluble concentrates comprising insecticide compound (a) and insecticide compound (B), which usually contain 25% to 100% of active substance; such ready-to-use emulsions or solutions themselves contain 0.00001% to 20% of active substance.

It goes without saying that the "active substances" mentioned herein are indicated throughout only as active substances or as pesticide compounds (a) and (B) per se, but also as combinations of these two active substances.

The emulsifiable concentrates may contain, in addition to the solvent, an appropriate amount of additives such as a stabilizer, a surfactant, a penetrant, a rust inhibitor, a colorant or a binder, as required, as described above.

The insecticidal compositions according to the invention in the form of concentrated suspensions can be spray-applied and, in order to form stable fluid products without sedimentation, generally contain 2 to 75% of active substance, 0.5 to 15% of surfactant, 0.1 to 10% of thixotropic agent, 0 to 10% of suitable additives, such as antifoams, rust inhibitors, stabilizers, penetrants and binders, and, as carrier, water or organic liquids in which the active substance is insoluble or only slightly soluble, or mixtures of several organic or inorganic solvents.

Several solid organic or inorganic substances may be dissolved in the carrier to prevent or avoid sedimentation, and such substances may also be used to prevent freezing of water.

For the preparation of sprayable powders or wettable powders of the pesticide compositions of the present invention, it is usual to contain 20 to 95% of active substance.

In addition to the fixing support, they generally contain from 0 to 5% of a wetting agent, from 3 to 10% of a dispersing agent and, if appropriate, from 0 to 10% of one or more stabilizers and/or other additives, for example penetrants, binders, anti-agglomerants, colorants, etc.

To produce the above-described sprayable or wettable powders, the active substance and the additional substance are first mixed in a suitable mixer and ground in a mill or other suitable grinder. Thereby producing a powder for spray application having excellent wettability and suspendability; it can be suspended in water to the desired concentration.

In addition to wettable powders, the pesticidal compositions of the present invention may also be formulated as pastes.

The conditions and modes of preparation of the above-mentioned paste-like pesticidal composition of the present invention and the conditions and modes of application thereof are similar to those in the case of wettable powder or powder for spray application.

As mentioned above, aqueous suspensions and emulsions, for example, pesticide compositions formed by diluting the wettable powders or emulsified concentrates of the present invention with water, are included within the scope of the present invention.

The emulsions may be of the water-in-oil or oil-in-water type, and they may have a thick or thick consistency.

The compositions of the present invention may be formulated in general or in a variety of shapes; these compositions containing the fungicide compound (a) and the insecticide compound (B) can therefore be used as aerosol-generating agents; bait (ready to use); capsule suspension; a cold fog product; a concentrate for preparing a bait; shaping the bait; powder for dry coating; an emulsifiable concentrate; water/water type emulsion; oil/reverse emulsion; an encapsulated particle; fine particles; a concentrated suspension for treating seeds; a bait applied to the grain; granulated bait; particles; a hot fogging product; coarse particles; fine particles; an oil-dispersible powder; a concentrated suspension which can be diluted in oil; a liquid miscible in oil; a stick for agricultural medicine; bait on the brick; powdered, chunk glass bait for dry treatment of seeds; treated or coated seeds; smoking a candle; a smoking box; a fumigant; smoking particles; a smoking stick; fumigating tablets; a smoking tray; a soluble concentrate; a soluble powder; a liquid for treating the seed; concentrating the suspension (fluidizable concentrate); a lain powder; a very small amount of liquid for coating; very small amounts of suspension vapor sprayer product for coating; granules or tablets for dispersion in water; wettable powders for wet processing; water soluble granules or tablets; soluble powder for treating seeds; wettable powders.

According to another embodiment of the invention, the above-described composition of the invention may also take the form of an in-situ mixing, typically an in-tank mixing.

The insecticide composition in the form of in-tank mixing is usually in the form of a dilute insecticide composition.

In this case, the pesticidal composition of the present invention is in the form of pesticidal compositions each containing the pesticidal compounds (a) and (B) separately, and therefore, when these compositions are used or when a diluted pesticidal composition to be used is prepared, the above pesticidal compositions must be mixed with each other.

These in-tank mixed insecticide compositions are typically mixed in the tank of the application device.

However, the above-mentioned pesticide compositions each containing the pesticide compounds (A) and (B) respectively can also be used separately, particularly after dilution, and therefore the performance of the pesticide composition of the present invention containing the above-mentioned pesticide compounds (A) and (B) can be obtained directly at the site of application.

It goes without saying that various variants or embodiments of the treatment and/or protection method of the invention, both taking into account the composition of the invention, are an integral part of the invention. Various modifications may be made in the foregoing combinations or permutations without departing from the spirit or scope of the invention.

As such, the various aspects of the invention just described may be combined or coupled with each other without departing from the spirit or scope of the invention.

The following examples will better illustrate various aspects of the present invention, particularly with respect to the compositions and methods of the present invention using the above-described pesticide compositions, and are not to be construed as limiting the scope of the invention in any way.

The following process examples A-L will specifically describe the process of the present invention.

These process examples will be able to highlight many of the inherent advantages of the process according to the invention.

Method example A

This process example describes the pesticidal treatment according to the invention.

The treatment method is a treatment method for killing yellow rice stem borers or tryporyza incertulas, wherein the rice crops are infected by pests.

Four test sites were prepared in a similar manner for comparison with the method of the present invention using known insecticidal treatments.

The first trial was carried out without any treatment, the second trial was carried out with fipronil as the active substance, the third trial was carried out with delta-methrin, and the fourth trial was carried out with fipronil and delta-methrin according to the method of the invention.

After sowing and growing, transplanting the rice seedlings in the three-leaf stage or the four-leaf stage.

After 7 days of transplantation, various active substances were applied.

The formulations used in the process of the invention are identical to those of composition example A, the application ratios and the test results are given in Table 1.

The number of rice seedling cores withered due to infestation by the treated pest, tryporyza incertulas, was calculated in the experiment. In which the number in the test with the method according to the invention is minimal, while the number in untreated test fields or test fields treated with known methods is found to be higher.

The test result shows that the method has better pest killing effect, and simultaneously can greatly reduce the use amount of active substances, thereby reducing the negative influence on the environment.

TABLE 1

	Test field 1	Test field 2	Test field 3	Test field 4
	Test field 1	Test field 2	Test field 3	Test field 4	Active substances used in the method of implementation	Without treatment	fipronil	δ-methrin	Fipronil and delta-methrin
The ratio of active substances used in the process	/	10 g/hectare	6 g/hectare	11 g/ha, of which 5 g/ha fipronil and 6 g/ha delta-methrin	Active substances used in the method of implementation	Without treatment	fipronil	δ-methrin	Fipronil and delta-methrin
The ratio of active substances used in the process	/	10 g/hectare	6 g/hectare	11 g/ha, of which 5 g/ha fipronil and 6 g/ha delta-methrin	Proportion of dead seedling core	78％	56％	66％	54％

This process example fully describes the advantages of the process according to the invention, in particular a satisfactory pesticidal effect on the pests to be treated, and also a reduction in the amount of active substance used.

Method example B

This example describes a method according to the invention which is suitable for insecticidal treatment against leafhoppers, in particular leafhopper bivalve.

The method is used for treating the rice crops.

The experimental operating conditions were as in the case of method example A.

The active substances used were fipronil and delta-methrin and were formulated in granular form according to composition example a.

After transplanting seedlings for 25 days, the active substances were applied to the test plots.

The application rates of the active substances and the test results after 14 days of application are listed in Table 2.

TABLE 2

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	fipronil	δ-methrin	Fipronil and delta-methrin
The ratio of active substances used in the process	25 g/hectare	6 g/hectare	11 g/ha, of 5 g/ha fipronil and 6 g/ha delta-methrin	Active substances used in the method of implementation	fipronil	δ-methrin	Fipronil and delta-methrin
The ratio of active substances used in the process	25 g/hectare	6 g/hectare	11 g/ha, of 5 g/ha fipronil and 6 g/ha delta-methrin	Insecticidal compositionEffect	16％	6％	28％

The test results show that the process according to the invention is particularly satisfactory, both in respect of insecticidal effect and in respect of reducing the diffusion of active substances.

Method example C

This example describes a method according to the invention, which is suitable for an insecticidal treatment for killing brown rice.

The operation and measurement conditions of this example were the same as those of method example B.

The application rates of the active substances and the test results are listed in table 3.

TABLE 3

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	fipronil	Cypermethrin	Fipronil and Cypermethrin
The ratio of active substances used in the process	10 g/hectare	12.5 g/ha	17.5 g/hectare, of which fipronil is 5 g/hectare and Cypermethrin is 12.5 g/hectare	Active substances used in the method of implementation	fipronil	Cypermethrin	Fipronil and Cypermethrin
The ratio of active substances used in the process	10 g/hectare	12.5 g/ha		Insecticidal effect	78％	21％	76％

The test results show that the process according to the invention is very satisfactory, i.e. both in respect of insecticidal effect and in respect of reducing the amount of diffusion of the active substance.

Method example D

This exemplary method according to the invention describes the improvement in the yield of rice crops accompanied by the control of harmful insects which damage rice crops.

The yield of the crop in the example of the treatment method according to the invention was estimated. The yield of the crop plants is improved by carrying out the process according to the invention using fipromil as compound (A) and cypermothrin as compound (B) simultaneously.

The operating and measuring conditions of this test were as in the case of method example B described above.

The active substance use ratios and the test results are shown in table 4.

TABLE 4

	Test field (1)	Test field (2)	Test field (3)	Test field (4)
	Test field (1)	Test field (2)	Test field (3)	Test field (4)	Active substances used in the method of implementation	fipronil	Cypermethrin	Fipronil and Cypermethrin	Without treatment
The ratio of active substances used in the process	10 g hectare	12.5 g/ha	17.5 g/hectare, of which fipronil is 5 g/hectare and Cypermethrin is 12.5 g/hectare	/	Active substances used in the method of implementation	fipronil	Cypermethrin	Fipronil and Cypermethrin	Without treatment
The ratio of active substances used in the process	10 g hectare	12.5 g/ha		/	Yield of test field (kilogram/hectare)	2276	1416	2596	791
Improvement in yield of test field (%)	188	78	228	/	Yield of test field (kilogram/hectare)	2276	1416	2596	791

The test results show that the process according to the invention is particularly satisfactory. The improvement in absolute and relative yields of crop plants brought about by the process according to the invention is satisfactory, as well as in terms of a reduction in the amount of active substance diffused.

Method example E

This example describes a method according to the invention, which is suitable for an insecticidal treatment against brown rice lice.

The active substances used, their proportions and the test results are listed in Table 5.

TABLE 5

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	fipronil	δ-methrin	fipronil and delta-methrin
The ratio of active substances used in the process	25 g/hectare	6 g/hectare	8 g/ha, of 5 g/ha fipronil and 3 g/ha of delta-methrin	Active substances used in the method of implementation	fipronil	δ-methrin	fipronil and delta-methrin
The ratio of active substances used in the process	25 g/hectare	6 g/hectare	8 g/ha, of 5 g/ha fipronil and 3 g/ha of delta-methrin	Degree of change in pest number after 3 days of application	+33％	+27％	-40％
The degree of change in pest population after 7 days of application	+11％	0％	-20％	Degree of change in pest number after 3 days of application	+33％	+27％	-40％

The test results show that the process according to the invention is particularly satisfactory, both in respect of insecticidal effect and in respect of reducing the amount of diffusion of the active substance.

In particular, it is only possible to reduce the number of harmful insects by the treatment according to the invention using fipronil and δ -methrin as compounds (A) and (B).

Method example F

Examples of the process describe the process according to the invention, which is suitable for insecticidal treatment for killing brown rice lice.

The active substances used and their proportions, as well as the test results, are listed in Table 6.

TABLE 6

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	fipronil	Cypermethrin	fipronil and Cypermethrin
The ratio of active substances used in the process	25 g/hectare	12.5 g/ha	17.5 g/hectare, of which fipronil is 5 g/hectare and Cypermethrin is 12.5 g/hectare	Active substances used in the method of implementation	fipronil	Cypermethrin	fipronil and Cypermethrin
The ratio of active substances used in the process	25 g/hectare	12.5 g/ha		Degree of change in pest number after 3 days of application	+33％	-27％	-41％
The degree of change in pest population after 7 days of application	+11％	+13％	-47％	Degree of change in pest number after 3 days of application	+33％	-27％	-41％

The test results show that the process according to the invention is particularly satisfactory, both in terms of insecticidal effect and in terms of reducing the amount of diffusion of the active substance.

In particular, it is only possible to effectively reduce the number of harmful insects by the method of the present invention using fiprolil and cypermothrin as the compounds (A) and (B).

Method example G

This example describes a method according to the invention, which is suitable for insecticidal treatment against two leafhoppers.

The active substances used and their proportions, as well as the test results, are listed in Table 7.

TABLE 7

	Test field (1)	Test field (2)	Test field (3)	Test field (4)
	Test field (1)	Test field (2)	Test field (3)	Test field (4)	Active substances used in the method of implementation	fipronil	δ-methrin	Fipronil and delta-methrin	Without treatment
The ratio of active substances used in the process	29 g/hectare	6 g/hectare	8 g/ha, of which fipronil is 5 g/ha and delta-methrin is 3 g/ha	/	Active substances used in the method of implementation	fipronil	δ-methrin	Fipronil and delta-methrin	Without treatment
The ratio of active substances used in the process	29 g/hectare	6 g/hectare		/	Degree of change in pest number after 1 day of application	+50％	-13％	-53％	+200％
Degree of change in pest number after 3 days of application	+83％	+25％	-32％	+200％	Degree of change in pest number after 1 day of application	+50％	-13％	-53％	+200％
Degree of change in pest number after 3 days of application	+83％	+25％	-32％	+200％	The change degree of pest number after 7 days of application	+183％	+75％	+11％	+522％

The test results show that the process according to the invention is particularly satisfactory, both in terms of insecticidal efficiency and in terms of reducing the amount of diffusion of the active.

Method example H

This example describes the method of the invention, which is suitable for insecticidal treatment to kill brown rice lice.

The operation and measurement conditions of this test were as in the case of method example B.

The active substances used and the proportions in which they were used, as well as the test results, are listed in Table 8.

TABLE 8

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	fipronil	fipronil and Cypermethrin	Without treatment
The ratio of active substances used in the process	25 g/hectare	25 g/hectare, 5 g/hectare fipronil and 20 g/hectare Cypermethrin	/	Active substances used in the method of implementation	fipronil	fipronil and Cypermethrin	Without treatment
The ratio of active substances used in the process	25 g/hectare		/	Degree of change in pest number after 1 day of application	-15％	-49％	+65％
Degree of change in pest number after 3 days of application	-8％	-23％	+34％	Degree of change in pest number after 1 day of application	-15％	-49％	+65％
Degree of change in pest number after 3 days of application	-8％	-23％	+34％	The degree of change in pest population after 7 days of application	-16％	-28％	+42％
The change degree of pest number after 14 days of application	+40％	+26％	+108％		-16％	-28％	+42％

The test results show that the process of the invention is particularly satisfactory, both in terms of insecticidal efficiency and in terms of reducing the amount of diffusion of the active substance.

Method example I

The active substances used and the proportions in which they were used, as well as the test results, are listed in Table 9.

TABLE 9

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	fipronil	fipronil and Cypermethrin	Without treatment
The ratio of active substances used in the process	25 g/hectare	25 g/hectare, 5 g/hectare fipronil and 20 g/hectare Cypermethrin	/	Active substances used in the method of implementation	fipronil	fipronil and Cypermethrin	Without treatment
The ratio of active substances used in the process	25 g/hectare		/	The degree of change in pest population after 7 days of application	+19％	-14％	+113％

The test results show that the process of the invention is particularly satisfactory, both in terms of insecticidal effect and in terms of reducing the amount of diffusion of the active substance.

Method example J

This example describes the pesticidal treatment of the present invention.

The treatment method is suitable for treating yellow stem borer or yellow rice stem borer which kills rice crop which is infected.

The active substances used and the proportions in which they were used, as well as the test results, are listed in Table 10.

Watch 10

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	Without treatment	fipronil	fipronil and Cypermethrin
The ratio of active substances used in the process	/	25 g/hectare	25 g/hectare, 5 g/hectare fipronil and 20 g/hectare Cypermethrin	Active substances used in the method of implementation	Without treatment	fipronil	fipronil and Cypermethrin
The ratio of active substances used in the process	/	25 g/hectare		The degree of change in the number of dead rice seedling cores	-26％	-35％	-66％

The above measurement is to count the number of dead rice seedling cores due to invasion by the treated pest, namely, tryporyza incertulas; the greatest reduction is achieved according to the method of the invention, whereas the measurements of the test fields which have not been treated or which have been treated by known methods are of moderate magnitude.

The test results show that the method of the invention has excellent insecticidal effect and can greatly reduce the diffusion amount of active substances, thereby reducing the negative influence on the environment.

Method example K

This example describes the pesticidal treatment according to the invention.

The method is suitable for a treatment method of the stable black bugs for killing and killing the positively-transfected rice crops.

The active substances used and the proportions in which they were used, as well as the results of this test, are listed in Table 11.

TABLE 11

	Test field (1)	Test field (2)	Test field (3)
	Test field (1)	Test field (2)	Test field (3)	Active substances used in the method of implementation	Without treatment	fipronil	fipronil and Cypermethrin
The ratio of active substances used in the process	/	25 g/hectare	25 g/hectare, 5 g/hectare fipronil and 20 g/hectare Cypermethrin	Active substances used in the method of implementation	Without treatment	fipronil	fipronil and Cypermethrin
The ratio of active substances used in the process	/	25 g/hectare		Degree of change in the number of harmful insects after 1 day of application	-21％	-43％	-52％
Degree of change in the number of harmful insects after 3 days of application	-40％	-67％	-81％		-21％	-43％	-52％
	-40％	-67％	-81％	The change degree of the number of harmful insects after 14 days of application	27％	-45％	-60％

The test results show that the method has higher insecticidal efficiency, and can greatly reduce the diffusion quantity of active substances, thereby reducing the negative influence on the environment.

Example of the method L

Corn seeds (Lorenzo varieties) are placed in a container and treated with the active ingredients in both individual and combined form while stirring. Three treated seeds were then sown in pots having a diameter of 10 cm. One week after sowing, 10L 2 larvae of turnip moth were transmitted to each pot. The efficiency of the active ingredients in preventing feed damage was determined 42 days after sowing. The test is carried out in a greenhouse at a temperature of 22-27 ℃ and a humidity of 30-70%.

To show the synergistic reaction between the active ingredients, the test results were processed using the method described in Cdlby s.r. in the Wecds publication, 1967, 15, pages 20-22, "method of calculating synergistic and antagonistic responses to herbicide combinations", in which the percentage E of "desired" control damage of the combinations compared to the untreated control, constitutes the following formula:

E=D+F-DF/100

wherein D represents the control obtained when a certain concentration of delta-methrin is applied alone, and F represents the control obtained when a certain concentration of fipronil is applied alone. If the observed control rate of the mixture is greater than E, the results indicate a synergistic reaction, and the results of this test are shown in the following table.

TABLE 12

Watch (average of three treatments)

Active reaction component	Ratio of	Control of	Expectation (E)
Active reaction component	Ratio of	Control of	Expectation (E)	Description of the invention	(g/kg seeds)	(% efficiency)	(％)
Untreated	-	0		Description of the invention	(g/kg seeds)	(% efficiency)	(％)
Untreated	-	0		Fipronil (FS50 g/L)	2.5	50
Delta-methrin (SC500 g/l)	0.5	40		Fipronil (FS50 g/L)	2.5	50
Delta-methrin (SC500 g/l)	0.5	40		Fipronil (FS500 g/l) + delta-methrin (SC50 g/l)	2.5+0.5	90	70

In a particularly satisfactory manner, the results obtained in the various processes according to the invention in the process examples A-L described above only require a single application of the active substances (A) and (B) used, and in generally known practice one generally employs several application modes in order to obtain acceptable or equivalent results.

The following composition examples a-G describe specific pesticide compositions according to the invention.

Composition example A

In the case of the compositions according to the invention in the form of granules, the following composition is used:

22.7 g fipronil27.3 g as pesticide compound (A) delta-methrin as pesticide compound (B)	50 g
	50 g	Epichlorohydrin	2.5 g
Cetyl polyglycol ether	2.5 g	Epichlorohydrin	2.5 g
Cetyl polyglycol ether	2.5 g	Polyethylene glycol	35 g
Kaolin with particle size of 0.3-0.8mm	910 g	Polyethylene glycol	35 g

In this particular case, the insecticide active substance is mixed with epichlorohydrin and 60 g of acetone are added, followed by polyethylene glycol and cetyl polyethylene glycol ether, the solution prepared is sprinkled in kaolin, and the acetone is evaporated off in vacuo.

Composition example B

In one embodiment of the composition according to the invention in the form of granules, the following components are present:

14.3 g fipronil as pesticide compound (A) 35.7 g Cypermethrin as pesticide compound (B)	50 g
	50 g	Epichlorohydrin	2.5 g
Cetyl polyglycol ether	2.5 g	Epichlorohydrin	2.5 g
Cetyl polyglycol ether	2.5 g	Polyethylene glycol	35 g
The high-ash soil with the particle size of 0.3-0.8mm	910 g	Polyethylene glycol	35 g

The preparation was carried out as in the case of composition example A above

Composition example C

This composition example describes the composition of the present invention in the form of an emulsifiable concentrate.

7.2 g fipronil17.8 g Cypermethrin as insecticide Compound (A)	25 g
	25 g	Tristyrylphenol/ethylene oxide concentrates	10 g
Solution containing 70% (w/v) calcium dodecylbenzenesulfonate	5 g	Tristyrylphenol/ethylene oxide concentrates	10 g
	5 g	N-methyl pyrrolidone	50 g
C₁₀Is a light aromatic hydrocarbon solvent	10 g	N-methyl pyrrolidone	50 g

Dissolving the first three components in N-methyl pyrrolidone; then C is added₁₀To adjust the final volume.

Composition example D

This is another specific pesticidal composition according to the present invention, which has the form of an emulsifiable concentrate and is prepared from the following components:

15.6 g of pesticideFipronil9.4 g of Compound (A) delta-methrin as pesticidal Compound (B)	25 g
	25 g	Tristyrylphenol/ethylene oxide concentrates	10 g
Solution containing 70% (w/v) calcium dodecylbenzenesulfonate	5 g	Tristyrylphenol/ethylene oxide concentrates	10 g
	5 g	N-methyl pyrrolidone	50 g
C₁₀Is a light aromatic hydrocarbon solvent	10 g	N-methyl pyrrolidone	50 g

It was prepared as in the case of composition example C.

Composition example E

An example of a composition of the present invention having a particle shape, wherein the composition is prepared with the following components:

10 g of fipronil as pesticide compound (A) and 40 g of Cypermethrin as pesticide compound (B)	50 g
	50 g	Epichlorohydrin	2.5 g
Cetyl polyglycol ether	2.5 g	Epichlorohydrin	2.5 g
Cetyl polyglycol ether	2.5 g	Polyethylene glycol	35 g
Kaolin with particle size of 0.3-0.8mm	910 g	Polyethylene glycol	35 g

It was prepared as in the case of composition example a.

Composition example F

According to another specific composition example of the present invention having a water-dispersible granule shape, which is composed of the following components:

81.9 g of fipronil as pesticide compound (A) 98.1 g of delta-methrin as pesticide compound (B)	180 g
	180 g	Lignosulfonic acid sodium salt	27 g
Alkyl naphthalenesulfonate condensates	18 g	Lignosulfonic acid sodium salt	27 g
Alkyl naphthalenesulfonate condensates	18 g	Alkyl naphthalene sulfonate	4.5 g

The above components were mixed and milled in a fluid energy mill and then put into a rotating granulator that sprayed water (up to 10%) to make granules. Finally, the formed granules were placed in a fluid bed dryer to remove excess water.

Composition example G

According to another specific composition example of the present invention having a water-dispersible granular shape, the composition is prepared with the following components:

36 g of fipronil as pesticide compound (A) and 144 g of Cypermethrin as pesticide compound (B)	180 g
	180 g	Lignosulfonic acid sodium salt	27 g
Alkyl naphthalenesulfonate condensates	18 g	Lignosulfonic acid sodium salt	27 g
Alkyl naphthalenesulfonate condensates	18 g	Alkyl naphthalene sulfonate	4.5 g

The preparation was as in composition example F above.

The above-mentioned composition examples A to G, as well as the process examples A to L, have clearly shown that the process and the composition according to the invention are superior to the known insecticides (A) and (B) alone.

The combination of the above-described process examples also fully demonstrates the clear advantages of the treatment process according to the invention using the composition according to the invention comprising pesticide compound (a) and pesticide compound (B).

Satisfactory results are also obtained with the insecticide compositions according to the invention when they are in one or other of the forms of the insecticide compositions according to the invention, in particular as shown in composition examples a to G.

Furthermore, when the treatment process was carried out with the various compositions according to the invention described above, no phytotoxicity phenomena were observed, as shown in the process examples described above.

Claims

1. A method for treating and controlling arthropods that destroy agricultural crops, characterized by using an insecticide compound (A) having the following chemical formula (I) and an insecticide compound (B) of the pyrethroid family:

in the formula R₁represents-CN or methyl or-C (S) NH₂A group or-C (= N-Y) Z;

R₂represents-S (O)_nR₃；

R₃Represents a single alkaneAlkyl or haloalkyl;

R₅and R₆Each being selected from a hydrogen atom, an alkyl OR haloalkyl, - (CO) alkyl, -C (O) OR₇and-S (O) rCF₃(ii) a Or R₅And R₆May together form a divalent group which may be interrupted by one or more heteroatoms;

R₇can be selected from one alkyl and one haloalkyl;

R₈can be selected from an alkyl group, a haloalkyl group and a hydrogen atom;

R₉can be selected from a hydrogen atom and an alkyl group;

m, n, q and r are independently selected from 0,1 and 2;

2. A process according to claim 1, characterized in that the pesticidal compound (A) is of formula (I)

R₁represents-CN; and/or

R₄represents-NR₅R₆(ii) a And/or

R₅And R₆Each is selected from a hydrogen atom, an alkyl OR haloalkyl group and-C (O) alkyl, and C (O) OR₇(ii) a And/or

X represents-C-R₁₂(ii) a And/or

3. The process according to either of claims 1 and 2, characterized in that the pesticide compound (a) is Fipronil or a 5-amino-3-cyano-1- (2, 6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinylpyrazole compound.

4. A process according to any one of claims 1 to 3, characterized in that the pesticide compound (B) has the following formula (ii):

in the formula₁And R₂Each represents a C₁-C₈Alkyl or a C₁-C₈Or a halogen atom or a substituted or unsubstitutedPhenyl of (a); and/or

R₄Represents a substituted or unsubstituted phenyl group.

5. A process as claimed in any of claims 1 to 4, characterized in that the pesticide compound (B) has the formula (II)

R₄Represents a substituted or unsubstituted phenoxybenzyl group.

6. A process according to any one of claims 1 to 5, characterised in that the pesticidal compound has the formula (II) wherein R is₄Represents a halophenoxybenzyl group.

7. A process according to any one of claims 1 to 6, characterized in that the pesticide compound (B) is in the form of a mixture of several compounds of formula (II), a specific isomer form or a mixture of several isomers.

8. The process according to any of claims 1 to 7, characterized in that the pesticide compound (B) is selected from the group consisting of the following.

bifenthrin, 2-methyldiphenyl-3-methyl- (Z) - (1RS,3RS) -3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate;

cyfluthrin, (R, S) - α -cyano-4-fluoro-3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

Z-Cythrin, a mixture of stereoisomers (S) - α -cyano-3-phenoxybenzyl (1RS,3RS,1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, in which the ratio of the enantiomers (S) - (1RS,3RS) and (S) - (1RS,3SR) is between 45/55 and 55/45, respectively;

delta-methrin, i.e. (S) -alpha-cyano-3-phenoxybenzyl (1R,3R) -3- (2, 2-dibromovinyl) -2, 2-dimethylcyclopropane carboxylic carbonate;

fenvalemt, i.e. (RS) - α -cyano-3-phenoxybenzyl (RS) -2- (4-chlorophenyl) -3-methylbutyrate;

flumethrin, i.e., -cyano-4-fluoro-3-phenoxybenzyl;

phenothrin, 3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -2, 2-dimethyl-3- (2-methylpropenyl-1) -cyclopropanecarboxylate, wherein the A/B ratio is 0.25-2.5;

tefluthrin, i.e., 2,3,5, 6-tetrafluoro-4-methylbenzyl (Z) - (1RS,3RS) -3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate;

tralomethrin, i.e. (S) - α -cyano-3-phenoxybenzyl (1R,3S) -2, 2-dimethyl-3- [ (RS) -1,2,2, 2-tetrabromoethyl ] cyclopropanecarboxylate;

9. A method according to one of claims 1 to 8, characterized in that it is particularly suitable for the treatment and/or protection of crops, in particular of cereals or garden crops, in particular rice, wheat, barley, rye, but also of maize, sorghum, sunflower, soybean, or cotton, peas, oilseed rape, potatoes, vegetables or fruits, sugar beets, onions, bok choy, tomatoes, beans, lettuce and the like.

10. Process according to one of claims 1 to 9, characterized in that it is suitable for the treatment and/or protection of propagation material and seeds of plants, in particular of grains, tubers or rhizomes; for treating and/or protecting plant roots; for treating and/or protecting the stem roots or leaves of plants; it may also be used for treating and/or protecting the roots or fruits or other parts of plants of practical economic or agronomic value; for treating and/or protecting the soil in which cultivation is or is to be carried out.

11. Method according to one of claims 1 to 10, characterized in that it is suitable for treating and/or protecting plants of different growth stages, in particular for treating seeds, seedlings or seedlings, plants or plants to be planted.

12. Method according to one of claims 1 to 11, characterized in that the method is suitable for killing or controlling harmful insects, in particular the following insects:

insects of the family planthopper, in particular brown rice planthopper, brown rice planthopper and white-backed rice planthopper; and/or

Cicadae, especially decpiens microtopodia, two-leafhoppers, leafhoppers and brown planthoppers of the genus oryza; and/or

Snout moth families, in particular the tryporyza incertulas, the rice stem borers, the rice leaf rollers, the american rice borers, the chilo suppressalis, the sorghum borers and the september rice borers; and/or

Cydiodae, in particular, Leptosphaeria bicolor, Trigonopsis stenoptera and Trigonopsis radicicola; and/or

Noctuidae, in particular the greater borer, african greater borer and sorghum borer; and/or

Glossoidea, especially rice black bugs and aleuria mellifera plant black bugs; and/or

Diamondback moth, in particular diamondback moth; and/or

Torticolidae, especially leafminer; and/or

The family of the gall midicidae, in particular the genus Orselia and the rice gall midicidae.

13. A method according to one of claims 1 to 12, characterized in that it is suitable for killing or controlling harmful insects which grow on the soil.

14. Method according to one of claims 1 to 13, characterized in that it is used for controlling or killing the aforementioned pests in various stages of life and growth, in particular for controlling their eggs, larvae, pteromalus pupae or nymphs of their growth stages, or also for controlling arthropods or insects during adult life.

15. The process according to one of claims 1 to 14, characterized in that it uses from 0.5 to 500 g/ha or from 2 to 100 g/ha of pesticide compound (a) and/or from 0.5 to 1000 g/ha or from 1 to 500 g/ha of pesticide compound (B); and/or it uses pesticide compounds (A) and (B) in a weight ratio A/B of 0.005 to 250 or 0.05 to 10; and/or it uses pesticide compounds (A) and (B) in a B/A weight ratio of 0.004 to 2000 or 0.1 to 20.

16. A process according to one of claims 1 to 14, characterized in that it uses fipronil as compound (a) and δ -methrin or Cypermethrin as compound (B) and in that the a/B ratio when δ -methrin is used is between 0.1 and 5, and preferably between 0.5 and 3; when Cypermethrin is used, the A/B ratio is 0.05-10, preferably 0.15-6.

17. Composition suitable for use in one of the methods according to claims 1 to 16, characterized in that it comprises fipronil, i.e. 5-amino-3-cyano-1- (2, 6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinylpyrazole, as pesticide compound (B) and one of the following substances as pesticide compound B:

bifenthrin, 2-methyldiphenyl-3-methyl (Z) - (1RS,3RS) -3- (2-chloro-3, 3, 3-trifluoropropenyl-1) -2, 2-dimethylcyclopropanecarboxylate, wherein the A/B ratio is 0.25-0.9;

cyhalothrin, i.e. (R, S) - α -cyano-3-phenoxybenzyl (Z) - (1RS,3RS) - (2-chloro-3, 3, 3-trifluoropropenyl) -2, 2-dimethylcyclopropanecarboxylate, wherein the ratio of A/B is 0.1-5;

α -Cypermethrin, a racemic mixture consisting of (S) α -cyano-3-phenoxybenzyl (1R,3R) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S,3S) -3- (2, 2-dichlorovinyl-2, 2-dimethylcyclopropanecarboxylate;

β -Cypermethrin, prepared from the two enantiomeric pairs (S) - α -cyano-3-phenoxybenzyl (1R) -cis-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S) -cis-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate in a 2: 3 ratio with (S) - α -cyano-3-phenoxybenzyl (1R) -trans-3- (2, 2-dichlorovinyl) 2, 2-dimethylcyclopropanecarboxylate and (R) - α -cyano-3-phenoxybenzyl (1S) -trans-3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate;

Z-Cypermethrin, a mixture of the stereoisomers (S) - α -cyano-3-phenoxybenzyl (1RS,3 RS; 1RS,3SR) -3- (2, 2-dichlorovinyl) -2, 2-dimethylcyclopropanecarboxylate, in which the proportions of the enantiomers (S) - (1RS,3RS) and (S) - (1RS,3SR) are at 45/55 and 55/45, respectively;

flumethrin, i.e., -cyano-4-fluoro-3-phenoxybenzyl;

tralomethrin, i.e. (S) - α -cyano-3-phenoxybenzyl (1R,3S) -2, 2-dimethyl-3- [ (RS) -1,2,2, 2-tetrabromoethyl ] -cyclopropanecarboxylate, in a ratio of 0.6-0.9;

18. A composition according to claim 17, characterised in that it contains from 0.00001% to 00% or from 0.001% to 80% of the pesticidal compounds (a) and (B).

19. Composition according to one of claims 17 and 18, characterized by containing up to 99% of one or more carriers and/or up to 25% of one or more surfactants and/or up to 25% of one or more formulating agents.