OA11164A - Insecticidal composition comprising a pyrethroid type compound - Google Patents

Abstract

Insecticidal compositions containing a pyrethroid (I) and a chloronicotinyl insecticide (II) such as imidacloprid, acetamiprid, or nitenpyram.

Description

011164

New Pyrethroid Insecticidal Compositions

The present invention relates to novel insecticidal compositions comprising a pyrethroid-type compound and a processémettant implementation said composition and intended to protect, as a curative or preventive, the crops against attacks by insects.

For the purposes of the present invention, the term "plant" means a plant plant, a part of the plant or the reproductive material of the plant, in particular the seed, a genetically modified plant (GMO), etc.

All kinds of insecticidal compositions based on thyroids or organochlorine compounds, such as endosulfan, are known. In spite of the effective efficacy of these compounds, these commercial insecticidal compositions however show certain limits when it comes to extending the activity spectrum to the populations of mites, aphids, whiteflies, caterpillars, mealybugs, etc., and certain weaknesses due in particular to the resistances. that insects have developed vis-à-vis the pyrethroids.

In order to solve this problem of resistance, it is often called for new synthetic compounds of the pyrethroid family. It is found, however, that the phenomena of resistance inevitably appear, and, in order to preserve the efficacy of these compositions against insects, increasing doses of compounds must be applied.

In spite of all the already existing compositions, the fight against cotton parasites, and particularly against the parasite Heliolhis Armigera (or Helicoverpa Armigera), remains a difficult problem which requires large quantities of insecticides. It is desirable, for many reasons, and particularly with a view to protecting the environment and respecting the quality and quantity of cotton harvested, to reduce the doses of insecticides to be used.

An object of the present invention is to provide insecticidal compositions comprising a pyrethroid type compound and having the properties indicated above.

An object of the present invention is to provide insecticidal compositions comprising a pyrethroid type compound and also effective on insects having developed pyrethroid resistances. -2- 011164

An object of the present invention is to provide active insecticidal compositions, especially on cotton pests.

Another object of the present invention is to provide compositions with high insecticidal activity.

Another objective of the present invention is to provide insecticidal compositions for reducing the doses used, in particular a reduction in the doses of the constituents compared with those used when these constituents are used alone.

Another object of the present invention is to provide synergistic insecticidal compositions.

Another object of the present invention is to provide insecticidal compositions having reduced risks to the appearance of insects resistant to these insecticidal compositions.

It has now been found that all of these objectives can be achieved in whole or in part by the insecticidal compositions according to the present invention.

The present invention therefore relates to novel insecticidal compositions comprising a pyrethroid type compound, preferably lacypermethrin, and an insecticide of the chloronicotinyl family such as imidacloprid, acetamiprid or nitenpyram. Acetamiprid is a preferred compound within the scope of the present invention.

Thus, the subject of the present invention is, for example, an insecticidal composition comprising cypermethrin and acetamiprid.

The present invention also relates to novel insecticidal compositions comprising a pyrethroid type compound, including lacypermethrin, and an insecticide of the chloronicotinyl family, for example acetamiprid, these two compounds being in synergistic proportions.

Synergistic proportions are understood to mean the proportions which give the overall composition better efficacy than that which would be obtained by using the same amounts of the two compounds alone applied separately to the cultures. 011164 -3 -

The present invention further relates to novel insecticidal compositions comprising a pyrethroid type compound, including lacypermethrin, and an insecticide of the chloronicotinyl family, for example acetamiprid, and another (third) insecticidal compound.

The third insecticidal compound which can advantageously be used in the context of the present invention is in particular chosen from insecticidal compounds of the carbamate family, such as carbaryl or lethiodicarb, or of the organophosphorus family. By way of example and in a nonlimiting manner, the organophosphorus compounds that may be used in the context of the present invention are triazophos, chlorpyrifos, prophenophos and metamidophos. As the third insecticidal compound, letriazophos is preferred, although the other organophosphorus compounds are quite suitable in the context of the invention.

The pyrethroid type compound preferably used in the insecticidal compositions of the present invention is cypermethrin. Among the other pyrethroids which can also be used are permethrin, deltamethrin, cyfluthrin, bifenthrin, laresmethrin, cyhalothrin and pyrethrins. , and tralomethrin. All of the insecticidal active ingredients mentioned above are well known in the literature, as regards their formula, their preparation process and their physicochemical properties. This information is for example available in "The Electronic Pesticide Manual", version 1.0, edited by C. D. S. Tomlin for "The British Crop Protection Council" (BCCP).

For example, imidacloprid is the international nonproprietary name of 1- (6-chloro-3-pyridylmethyl) -N-nitroimidazolidin-2-ylideneamine.

Nitenpyram is the common name for (E) -N - [(6-chloro-3-pyridyl) methyl] -N-ethyl-N'-methyl-2-nitrovinylidenediamine. Acetamiprid has an international non-proprietary name (E) -N '- (6-chloro-3-pyridyl) methyl) -N 2 -cyano-N-methylacetamidine. It was first disclosed in International Patent Application WO 91/04965. Subsequently, other properties of this compound have been described in International Patent Application WO 93/24004. -4- 011164

The present invention therefore relates to novel insecticidal compositions comprising a pyrethroid type compound, preferably lacypermethrin in combination with a compound of the chloronicotinyl family and optionally a third insecticidal compound, especially taken from the family of organophosphorus.

Among the binary compositions according to the present invention, preference is given to compositions comprising cypermethrin and acetamiprid.

Among the ternary compositions according to the present invention, preference is given to compositions comprising cypermethrin, acetamiprid and triazophos.

Surprisingly, it has been found that the addition of a relatively small amount of a compound of the chloronicotinyl family to a pyrethroid-type compound (and possibly a compound of the organophosphorus family) confers on these newcompositions binary (respectively ternary) greater efficiency, especially vis-à-vis insects with resistance to other compositions based on pyrethroids already marketed. Other advantages are also observed thanks to the new compositions according to the invention, and in particular an improvement in crop yields.

Thus, the insecticidal compositions according to the invention comprise, as regards the binary combinations: from 99% to 70% of a pyrethroid type compound; and * from 1% to 30% of a compound of the chloronicotinyl family; and, with respect to ternary associations: * from 49% to 5% of a pyrethroid type compound; from 50% to 94% of an organophosphorus compound; and * from 1% to 20% of a compound of the chloronicotinyl family. 011164 - 5 -

The percentages given above and in the remainder of the description are percentages by weight unless otherwise indicated.

A preferred composition of the present invention is the binary composition comprising: from 99% to 70% of cypermethrin, preferably from 75% to 90%; and * from 1% to 30% acetamiprid, preferably from 10% to 25%.

Another preferred composition of the present invention is the ternary composition comprising: from 49% to 5% cypermethrin, preferably from 10% to 25%; from 50% to 94% triazophos, preferably from 70% to 85%, and from 1% to 20% acetamiprid, preferably from 2% to 7%.

The insecticidal compositions according to the invention comprise the active substances indicated above as well as solid or liquid carriers, acceptable in agriculture and surfactants also acceptable in agriculture. In particular, the usual inert and customary supports and surfactants are usable. These compositions cover not only the compositions ready to be applied to the culture to be treated by means of a suitable device, such as a spraying device, but also the commercial concentrated compositions which must be diluted before application to the culture. The term "active material" is more particularly denoted by the composition according to the invention comprising a compound of the pyrethroid type, a compound of the chloronicotinyl family and optionally a compound of the organophosphorus family.

The compositions of the invention may also contain any other ingredients such as, for example, protective colloids, adhesives, thickeners, thixotropic agents, penetrating agents, stabilizers, sequestering agents, etc. More generally, the Active-6-011164 Material can be combined with all the solid or liquid additives corresponding to the usual techniques of formulation. In general, the compositions according to the invention usually contain from 0.05 to 95% (by weight) of active material, one or more solid or liquid carriers and, optionally, one or more surfactants.

By the term "carrier" in this specification is meant a natural or synthetic organic or mineral material with which the Active Matter is combined to facilitate its application to the aerial parts of the plant. This support is therefore generally inert and must be acceptable in agriculture, especially on the treated plant. The support may be solid (clays, natural or synthetic silicates, silica, resins, waxes, solid fertilizers, etc.) or liquid (water, alcohols, in particular butanol, etc.). The surfactant may be an emulsifier, dispersant or wetting agent of ionic or nonionic type or a mixture of such surfactants. There may be mentioned, for example, salts of polyacrylic acids, lignosulfonic acid desaltes, salts of phenolsulphonic or naphthalenesulphonic acids, polycondensates of ethylene oxide with fatty alcohols or with fatty acids or with fatty amines, with phenols. substituents (in particular alkylphenols or arylphenols), salts of sulphosuccinic acid esters, taurine derivatives (especially alkyltaurates), phosphoric esters of polyoxyethylated alcohols or phenols, esters of fatty acids and polyols, sulphates, sulphonates and phosphates derivatives of the foregoing compounds. The presence of at least one surfactant is generally essential when the Active Matter and / or the inert carrier are not soluble in water and the application carrier is water.

Thus, the compositions for agricultural use according to the invention can contain the Active Material within very wide limits, ranging from 0.05% to 95% (by weight). Their content of surfactant is advantageously between 5% and 40% by weight.

These compositions according to the invention are themselves in fairly diverse forms, solid or liquid. 011164 - 7 -

As forms of solid compositions, mention may be made of granules, in particular those obtained by extrusion, by compacting, by impregnation of a granulated support, by granulation from a powder (the content of active material in these granules being between 0.5 and 80% for these cases), tablets or effervescent tablets.

The insecticidal composition according to the invention can also be used in the form of dusting powders; it is also possible to use a composition comprising 50 g of Active Matter and 950 g of talc; a composition comprising 20 g of active material, 10 g of finely divided silica and 970 g of talc can also be used; these constituents are mixed and ground and the mixture is applied by dusting.

Examples of liquid or liquid compositions for application are solutions, in particular water-soluble concentrates, emulsions, concentrated emulsions, concentrated suspensions, emulsifiable concentrates, soluble concentrates, aerosols, wettable powders (or powder to be sprayed), pastes, gels. The emulsifiable concentrates are the preferred formulations for the insecticidal compositions according to the invention. The other formulations, however, are quite suitable for insecticide compositions, the type of formulation chosen varying with the type of cultures to be treated, the type or types of insects to be eradicated, as well as conditions specific to the nature of the place where the applications are made.

The concentrated suspensions, applicable as sprays, areprepared in order to obtain a stable fluid product which does not deposit and usually contain from 10 to 75% of Active Matter, from 0.5 to 15% of surfactants, from 0.1 to 10% by weight. % of thixotropic agents, from 0 to 10% of suitable additives, such as antifoams, corrosion inhibitors, stabilizers, penetrating agents and adhesives and, as a carrier, water or an organic liquid wherein the Active Matter is low or passable: some organic solids or mineral salts may be dissolved in the carrier to help prevent sedimentation or as antifreezes for water. By way of example, here is a concentrated suspension composition:

Example SC 1: - Active material 500 g - polyethoxylated tristyrylphenol phosphate 50 g - polyethoxylated alkylphenol 50 g - sodium polycarboxylate 20 g - ethylene glycol 50 g - organopolysiloxane oil (anti-foam) 1 g - polysaccharide 1.5 g - water 316.5 g

Emulsifiable concentrates, also applicable in spraying, are intended to be diluted with water before use. The emulsifiable concentrates are prepared in such a way as to obtain a product which is fluid and chemically stable only on the physical plane. The emulsifiable concentrates generally comprise from 5% to 95% of active ingredient. The emulsifiable concentrates additionally contain, besides the Active Matter, one or more organic solvents which are immiscible with water, for example desphthalates, optionally modified vegetable oils. methylpyrrolidone or N-octylpyrrolidone, at least one out-active emulsifier, for example organosulfonates of alkaline or alkaline-earth metals, for example sodium or calcium alkylarylbenzene sulfonates. The emulsifiable concentrates may additionally comprise, in addition, stabilizers, dyes and co-solvents, as well as suitable additives, such as antifoams, corrosion inhibitors, stabilizers, penetrants and adhesives as well as anti-freeze agents. As an illustrative example, here is the composition of an emulsifiable concentrate: -9- 011164

Example EC 1 - Active material - oxyethylated castor oil - calcium dodecylbenzene sulphonate - cyclohexanone - aromatic petroleum fraction 10.1% 6.4% 4.3% 21.2% q.s.p. 100%

Wettable powders (or spray powder) are usually prepared to contain 20 to 95% Active Matte, and usually contain, in addition to the solid carriers, from 0 to 30% of a wetting agent, from 3 to 20% a dispersing agent, and, when necessary, from 0.1 to 10% of one or more stabilizers and / or other additives, such as penetrating agents, adhesives, or conditioners, dyes, etc. .

In order to obtain the spraying powders or wettable powders, the active ingredients are intimately mixed in the appropriate mixers with the additional substances and milled with suitable mills or other crushers. Spray powders are thus obtained, the wettability and suspension of which are advantageous; they can be suspended with water at any desired concentration and these suspensions can be used very advantageously particularly for application to the leaves of plants. In place of the wettable powders, pasta can be made. The conditions and methods of production and use of these pastes are similar to those of wettable powders or spray powders. By way of example, here are various compositions of wettable powders (or powders for spraying):

Example PM 1 - Active material 50% - ethoxylated fatty alcohol (wetting agent) 2.5% - ethoxylated phenylethylphenol (dispersing agent) 5% - chalk (inert carrier) 42.5% -10- 011164

EXAMPLE PM 2: Active Ingredient 10% - oxo synthetic alcohol of branched type, ethoxylated C3 ethoxylated with 8 to 10 ethylene oxide (wetting agent) 0.75% - neutral calcium lignosulfonate (dispersing agent) 12% - carbonate of calcium (inert load) qsp 100%

Example PM 3:

This wettable powder contains the same ingredients as in the preceding example, in the following proportions: active material 75% wetting agent 1.50% dispersing agent 8% calcium carbonate (inert filler) q.s. 100%

Example PM 4: - 90% active matter - ethoxylated fatty alcohol (wetting agent) 4% - ethoxylated phenylethylphenol (dispersing agent) 6%

Example PM 5: - Active matter 50% - mixture of anionic and nonionic surfactants (wetting agent) 2.5% - sodium lignosulfonate (dispersing agent) 5% - kaolinic clay (inert support) 42.5%

The aqueous dispersions and emulsions, for example the compositions obtained by diluting with water an emulsifiable wettable powder or concentrate according to the invention, are included in the regregénéral of the present invention. The emulsions may be of the water-in-oil or oil-in-water type and may have a thick consistency such as that of a "mayonnaise". - 11 - 011164

The insecticidal compositions according to the invention may be formulated in the form of water-dispersible granules also included within the scope of the invention.

These dispersible granules, whose apparent density is generally between about 0.3 and 0.6, have a particle size of generally between about 150 and 2000 and preferably between 300 and 1500 microns.

The active material content of these granules is generally between about 1% and 90%, and preferably between 25% and 90%.

The rest of the granule is essentially composed of a solid filler and optionally surfactant adjuvants conferring on the granule properties of dispersibility in water. These granules can be essentially two distinct types depending on whether the charge retained is soluble or not in water. When the filler is water-soluble, it can be mineral or, preferably, organic. Excellent results have been obtained with urea. In the case of an insoluble charge, it is preferably mineral, such as for example lekaolin or bentonite. It is then advantageously accompanied by surfactants (in a proportion of 2 to 20% by weight of the granule) of which more than half is, for example, constituted by at least one dispersing agent, essentially anionic, such as an alkaline polynaphthalene sulfonate or alkaline earth or an alkaline or alkaline earth lignosulfonate, the remainder being constituted by nonionic or anionic wetting agents such as an alkaline or alkaline earth alkyl-naphthalene sulphonate.

On the other hand, although not essential, other adjuvants such as antifoam agents may be added.

The granulate according to the invention can be prepared by mixing the necessary ingredients and then granulating according to several techniques in soionnues (dredger, fluid bed, atomizer, extrusion, etc ...). It is generally completed by crushing followed by sieving to the selected particle size within the limits mentioned above. Granules obtained as above and then impregnated with a composition containing the Active Matter can be further processed.

Preferably, it is obtained by extrusion, operating as indicated in the examples below. - 12 - 011164

Example GD1: Dispersible granules

In a mixer, 90% by weight of material is mixed

Active and 10% urea beads. The mixture is then milled in a pin mill. A powder is obtained which is moistened with about 8% by weight of water. The wet powder is extruded in a perforated roll extruder. A granule is obtained which is dried, then crushed and sieved, so as to keep only the granules of a size between 150 and 2000 microns respectively.

Example GD2: Dispersible granules

In a mixer, the following constituents are mixed: - Active material 75% - wetting agent (sodium alkylnaphthalenesulphonate) 2% - dispersing agent (sodium polynaphthalenesulphonate) 8% - inert load insoluble in water (kaolin) 15%

This mixture is granulated in a fluid bed, in the presence of water, then dried, crushed and sieved so as to obtain granules with a size between 0.15 and 0.80 mm.

These granules can be used alone, in solution or dispersion in water so as to obtain the desired dose. They can also be used to prepare combinations with other active ingredients, especially insecticides, the latter being in the form of wettable powders, or aqueous granules or suspensions.

As regards the compositions suitable for storage and other transport, they more preferably contain from 0.5 to 95% (by weight) of Active Matter. Finally, a subject of the invention is a method of controlling, as a curative orpreventive, against harmful insects, characterized in that an effective and non-phytotoxic amount of an insecticidal composition according to the invention is applied to the aerial parts of the plants. The invention also relates to a plant treatment method characterized in that said culture is chosen from the group comprising cereals (for example wheat, barley, or rye), maize, sorghum, sunflower, lecoton, rice, peas, rapeseed, potatoes, vegetable crops, flower crops, citrus fruits and fruits in general, as well as planting materials of these plants and the genetically modified counterparts of these plants.

The cultures advantageously treated with the insecticidal compositions according to the present invention are cotton, tomato, cabbage, okra, eggplant, cucumber, chilli, pea, mango, citrus, flowers.

The methods according to the invention are particularly useful for the destruction of harmful insects, mites or arthropods on previously mentioned crops.

Binary compositions (for example cyprermethrin / acetamiprid) according to the present invention will generally be preferred when carpal and endocarpic caterpillars (on cotton) as well as aphids, leafhoppers, thrips, whiteflies, leafminers (on cotton, vegetables and flora, citrus fruits) are among the target parasites. The ternary compositions (cypermethrin / acetamiprid / triazophos) will be advantageously used when, in addition to the aforementioned parasites, it is necessary to control others, such as mites, phyllophagous caterpillars, mealybugs.

Among the insects, mites or arthropods which are harmful to the cultures mentioned above and which can be combated by means of the newcompositions, combinations and insecticidal treatments according to the present invention, mention may be made of the various varieties of flies, such as flies (Aleurodes, Bemisia sp., Trialeurodes sp. .), leafminers, leafhoppers, mites, caterpillars, scale insects, thrips, and aphids.

More particularly, among the cotton parasites which can be treated by the compositions, combinations and insecticidal treatments according to the present invention, mention may be made of: - 14 - 011164 - on the cotton plant, market garden and flower crops, citrus fruits, mango trees: * sucking biters (Aphis gossypii, Bemisia sp., In particular Bemisia tabaci, Empoasca sp., Thrips sp., In particular Thrips palmi and Scirtothrips dorsalis), * mites (especially Polyphagotarsonemus latus).

More particularly, among the parasites of vegetable and flower crops and citrus fruits, mention may be made of: * leafminers (in particular Liriomyza sp., Ophiomyia sp.), * Scale insects (including Planococcus citri on citrus fruits), * on cabbages: Plutella sp.and among the cotton pests: * exocarpic carpophagous caterpillars (egHelicoverpa armigera or Heliothis armigera; Earias sp., Diparopsis watersï); * endocarpic carpophagous caterpillars (Cryplophlebiasp., in particular Cryplophlebia leucotreta, Pectinophora sp., in particular Pectinophora gossypiella); * Phyllophagous caterpillars (Syllepte sp., in particular Syllepte derogata);

The insecticidal composition which is the subject of the invention is applied by means of various treatment methods such as the spraying on the aerial parts of the cultures to be treated with a liquid comprising the said composition.

By "effective and non-phytotoxic amount" is meant a quantity of composition according to the invention sufficient to allow the control or destruction of insects present or likely to appear on crops, and causing for said cultures no symptoms of phytotoxicity. Such a quantity is likely to vary within wide limits depending on the insect to be combated, the type of culture, the climatic conditions, and the compounds included in the insecticidal composition according to the invention. This quantity can be determined by systematic field tests, within the scope of the person skilled in the art. In general, the doses for use in carrying out the process according to the invention will be: 1) for binary combinations: 15 to 60 g / ha of pyrethroid type compound, preferably 25 to 45% g / ha, 1 to 50 g / ha of the chloronicotinyl family, preferably 5 to 10 g / ha; 2) for ternary combinations: * 15 to 60 g / ha of pyrethroid type compound, preferably 25 to 45 g / ha, * 100 to 200 g / ha of organophosphorus compound, preferably 120 to 180 g / ha, * 1 to 50 g / ha of the chloronicotinyl family, preferably 5 to 10 g / ha. 20 25

The doses of use for the particularly preferred compositions according to the present invention are for example: 1) for the binary combinations: * 25 to 45 g / ha of cypermethrin, preferably 36 g / ha, * 5 to 10 g / ha of acetamiprid preferably 8 g / ha; 2) for ternary combinations: * 25 to 45 g / ha of cypermethrin, preferably 36 g / ha, * 120 to 180 g / ha of triazophos, preferably 150 g / ha, * 5 to 10 g / ha of acetamiprid, preferably 8 g / ha. - 16- 011164

The following examples are given to illustrate the combinations, compositions and treatments according to the invention. It is understood that these examples are not limiting and that many other plants can betreatment, and insects or arthropods controlled by the associations and compositions according to the invention.

Example 1: Tests on cotton.

We carry out tests on cotton. Plots treated with 36 g / ha of cypermethrin (a) were compared, others treated with 36 g / ha of decypermethrin + 8 g / ha of acetamiprid (b) and still others with 36 g / ha of decypermethrin + 150 g / ha of triazophos (c) with plots treated with 11 / ha of ternary formulation EC 194 g / 1, which gives 36 g / ha of decypermethrin, 8 g / ha of acetamiprid and 150 g / ha of triazophos (d) .

The following results are then obtained:

Composition Average number of aphids per 100 leaves Average number of lesions per 100 leaves Number of mites per 100 leaves% of plants attacked by Syllepte (a) 67.9 5.47 16.8 26 (b) 9.3 2.05 8.8 33 ( (c) 82 4.38 2.6 3.3 (d) 12.3 1.8 0.9 2.7

The binary association is of great interest compared to the reference product cypermethrin when aphids and whiteflies are the target insects. The ternary association is a useful complement to this activity when populations of mites or phyllophagous caterpillars (Svllepte) are present. Good activities have also been obtained with different reports of active ingredients in associations, whether they are binary or ternary. - 17- 011164

The other examples below make it possible to appreciate other advantages of the compositions according to the invention. 10 15 20

Example 2: Tests on vegetable crops

Twice a week, okra and cabbage plants are treated. The treatment extends over two weeks for okra and 8 weeks for cabbage.

The tests are carried out with: 1) a formulation containing deltamethrin (trade name DECIS®12 EC), formulated at 1 1 / ha, which corresponds to a dose of 12 g / ha of dedeltamethrin; and 2) a composition according to the invention (formulated as an emulsifiable concentrate applied at 0.5 liter / ha) corresponding to 36 g / ha of cypermethrin, 8 g / ha of acetamiprid and 150 g / ha of triazophos (Composition A).

Finally, comparative tests are carried out on untreated plants.

The results are given in the table below and are expressed as a percentage of fruit or healthy plants in relation to the total number of fruits or treated plants.

Cultivation Composition% of fruits or saplings okra DECIS ® 68,6 Composition A 71,7 Control 44 Cabbage DECIS ® 52,5 Composition A 90 Control 32,5

For each of these tests, it was also noted a significant improvement in crop weights when they are treated with the composition A compared to those treated with DECIS® or untreated ones. - 18- 011164

Example 3: Cotton Test

A treatment program of 6 applications is carried out at 14 days interval, from the 50th, day after sowing. The tests are carried out with: 1) a formulation containing cypermethrin, dimethoate and triazophos (commercial name TRIALM®), formulated at 1 l / ha, which corresponds to a dose of cypermethrin (30 g / ha), dimethoate (240 g / ha) ) and triazophos (150 g / ha); and 2) a composition according to the invention (formulated as an emulsifiable concentrate applied at 1 liter / ha) corresponding to 36 g / ha of cypermethrin, 8 g / had'acetamiprid and 150 g / ha of triazophos (Composition A ').

The results are given in the following table:

Health analysis in green Harvest Health analysis at maturity Composition% of capsulessaines% of cottonjaune% of capsulessaines% of capsulesextracted TRIALM® 85 2.9 53.2 34.5 Composition A '91 1.5 75.2 14.2

These results show the effectiveness of the compositions according to the invention (% healthy capsules), thus the best quality of the harvest obtained with the treatment according to the invention (% of yellow cotton and pierced capsules). 20

Example 4: Tests on cotton

A treatment program of 6 applications is carried out at 14 days interval, from the 50th day after sowing.

The tests are carried out with: 1) a formulation containing cypermethrin, dimethoate and triazophos (trade name TERSEN®), formulated at 1 l / ha, which corresponds to a dose of cypermethrin (36 g / ha), dimethoate (240 g / ha) and triazophos (150 g / ha); 2) a formulation containing cypermethrin, dimethoate and triazophos (commercial name SHERDIPHOS®), formulated at 1 l / ha, which corresponds to a dose of cypermethrin (36 g / ha), dimethoate (240 g / ha) and triazophos (150 g / ha); 3) a composition according to the invention corresponding to 36 g / ha decypermethrin, 8 g / ha of acetamiprid and 150 g / ha of triazophos (Composition A). o

Finally, comparative tests are carried out on untreated plants.

The results are given in the following table:

Type of analysis Composition A TERSEN® SHERDIPHOS® Control indicator Analysis dushedding (organs felled) Percentage of organs pierced 10.7 17.2 17.6 22.9 Total number of caterpillars per area 46 58 63 58 Health analysis at maturity Total # of hardened capsules are 4823 4613 4965 3267% mature capsules 72.2 67.1 68.8 57.0% mature capsules 10.9 14.4 13.6 22.3% yellow cotton 8.9 13.5 11.6 19.4 No. of plants per Sylleptederogata attacked 335 444 727 2562% of aphid infested leaves 2.8 12.0 13.0 10.0 Cotton yield (kg / ha) 1735 1367 1435 844 -20- 011164

These results show the good protection of the capsules obtained by the A composition as well as its good efficacy against carpophagous caterpillars. They also show the superiority of the ternary compositions according to the invention compared with commercial ternary compositions. 5

Example 5: Tests on cotton

A treatment program of 6 applications is carried out at 14 days interval, from 50 cmc day after sowing.

The tests are performed with: 1) a formulation containing cypermethrin (36 g / ha) and dimethoate (400 g / ha); and 2) a formulation containing cypermethrin (36 g / ha) and acetamiprid (8 g / ha) (Composition B) according to the present invention. Finally, comparative tests are carried out on untreated plants.

The results are given in the following table:

Type of analysis Composition B cypermethrin + dimethoate Control Health analysis at maturity% of mature capsules 34.2 32.3 25.1% of mature capsules 47.3 50.6 54.4% yellow cotton 21.8 26 31, 9% of leaves infested with aphids 3.0 13.9 4.4% of plants attacked by Syllepte derogata 1862 2405 3566 Yield of cotton (kg / ha) 423 327 183

As for the previous example, these results underline the superiority of the binary compositions according to the invention with respect to an equivalent binary composition.

Claims (21)

-21 - 011164 CLAIMS 1. Insecticidal compositions characterized in that they comprise a pyrethroid type compound and an insecticide of the chloronicotinyl family. 2. Insecticidal compositions according to claim 1, characterized in that the insecticide of the chloronicotinyl family is selected from imidacloprid, acetamiprid and nitenpyram. 3. Insecticidal compositions according to claim 2, characterized in that the insecticide of the chloronicotinyl family is acetamiprid. 4. Insecticidal compositions according to any one of claims 1 to 3, characterized in that the pyrethroid type compound is cypermethrin. 5. Insecticidal compositions according to any one of claims 1 to 4 characterized in that they comprise lacypermethrin and acetamiprid. 6. Insecticidal compositions according to any one of claims 1 to 4 characterized in that they comprise a third insecticidal active ingredient chosen from the insecticidal compounds of the family of organophosphorus. Insecticidal compositions according to claim 6, characterized in that the third insecticidal active ingredient is letriazophos. 011164 -22- 8. Insecticidal compositions according to any one of claims 1 to 5 characterized in that they comprise from 99% to 70% of the pyrethroid type compound and from 1% to 30% of the compound of the chloronicotinyl family (percentages by weight). 9. Insecticidal compositions according to claim 8, characterized in that they comprise from 99% to 70% of cypermethrin, preferably from 75% to 90% and from 1% to 30% of acetamiprid, preferably from 10% to 25% ( percentages by weight). 10. Insecticidal compositions according to one of claims 6 or 7 characterized in that they comprise from 49% to 5% of a pyrethroid-type compound, from 50% to 94% of an organophosphorus compound, from 1% to 20% by weight. % of a compound of the chloronicotinyl family (percentagesponderal). 11. Insecticidal compositions according to claim 11, characterized in that they comprise from 49% to 5% of cypermethrin, preferably from 10% to 25%, from 50% to 94% of triazophos, preferably from 70% to 85%, and from 1% to 20% acetamiprid, preferably 2% to 7% (percentages by weight). 12. Insecticidal compositions according to one of the preceding claims characterized in that they comprise selected from protective descolloids, adhesives, thickeners, thixotropic agents, penetration agents, stabilizers, sequestering agents. 13. Insecticidal compositions according to one of the preceding claims characterized in that they comprise from 0.05 to 95% by weight of active material. 14. Insecticidal compositions according to one of the preceding claims, characterized in that they are formulated in the form of emulsifiable concentrates. 011164 -23 - 15. Emulsifiable concentrates characterized in that they comprise from 5% to 95% of an insecticidal composition according to any one of claims 1 to 14. 16. A method of control, as a curative or preventive, against harmful insectes insects, characterized in that is applied to the aerial parts of plants an effective and non-phytotoxic amount of a compositioninsecticide according to one of claims 1 to 14 . 17. The method of claim 17 wherein the plants are selected from the group consisting of cereals (eg wheat, barley, or rye), maize, sorghum, sunflower, cotton, rice, pea, lecolza, potatoes, vegetable crops, flower crops, citrus fruits and fruits in general, as well as the reproductive material of these plants and the genetically modified counterparts of these plants. 18. A method according to any one of claims 16 or 17characterized in that the plant is cotton. 19. A method according to any one of claims 16 to 18characterized in that the insecticidal composition is applied to a culture of potato infested or likely to be infested by aphids, whitefly, mites, thrips, leafhoppers, carpophagesendocarpic and phyllophagous caterpillars, and vegetable and flower crops, citrus infested or likely to be infested by aphids, thrips, mealybugs, leafminers. 20. Process according to any one of claims 16 to 19characterized in that the insecticidal composition is applied at a dose of: a) for binary combinations: * 15 to 60 g / ha of pyrethroid type compound, preferably 25 to 45 g / ha, 1 to 50 g / ha of the chloronicotinyl family, preferably 5 to 10 g / ha; (B) for ternary combinations: * 15 to 60 g / ha of pyrethroid type compound, preferably 25 to 45 g / ha, 100 to 200 g / ha of organophosphorus compound, preferably 5 to 120 g / ha 180 g / ha, 1 to 50 g / ha of the chloronicotinyl family, preferably 5 to 10 g / ha. 10 21. Method according to any one of claims 16 to 20characterized in that the insecticidal composition is applied at a dose of: a) for binary combinations: * 25 to 45 g / ha of cypermethrin, preferably 36 g / ha 5 to 10 g / ha of acetamiprid, preferably 8 g / ha; b) for ternary combinations: * 25 to 45 g / ha of cypermethrin, preferably 36 g / ha, * 120 to 180 g / ha of triazophos, preferentially 150 g / ha, * 5 to 10 g / ha of acetamiprid, preferably 8 g / ha. 15