MXPA06010194A - Seed treatment pesticidal compositions - Google Patents

Abstract

An aqueous seed treatment insecticidal and/or nematicidal composition in the form of a suspension comprising (A) at least one insecticide and/or nematicide in an amount of at least 3 weight%, based on the total weight of the composition, and (B) at least two surface active compounds, wherein (i) at least one is an anionic phosphate type compound, and (ii) at least one is a non-ionic alkoxylated phenol. Such compositions demonstrate improved dust-off performance when applied to plant propagation material, such as seeds.

Description

COMPOSITIONS PESTICIDES FOR THE TREATMENT OF SEEDS FIELD OF THE INVENTION The present invention relates to an aqueous nematicidal and / or insecticidal composition for the treatment of seeds and a suspension composition comprising the composition; the compositions are used in the treatment of plant propagation material to protect it against the attack of pests; to a plant propagation material resistant to pests; to a method of protecting plant propagation material; to a method for controlling pests of crop plants; to the use of certain surfactant compounds to improve the characteristics of the treated material and to the use of the surfactant compounds to improve the compatibility between the pesticidal compositions. BACKGROUND OF THE INVENTION The treatment of plant propagation material with pesticide compositions allows protection against pests that are found in the soil during a susceptible stage in the development of the plant. In addition, systemic seed treatments can provide an alternative to traditional foliar pesticide applications. However, by following such treatment, the treated plant propagation material is handled and transported for packing and storage; this handling and transport frequently generates Ref.174874 that the treated materials rub against each other, which causes that the chemists that were bound to the material become detached. The release of the chemicals is often in the form of particles in the air of, for example, pesticides and other materials of the treating composition which form solid particles during the drying of the seed. This can result in the treated material losing its pesticidal effectiveness and exposing the workers of such treatment operations to health risks by inhalation and sensitization, for example eye irritation, of the particles in the air. Additionally, the treatment of the plant propagation material is often carried out with a suspension composition containing a mixture of pesticidal compositions, which can result in incompatibility difficulties, for example, resulting in flocculation and lack of homogeneity between the different pesticide compositions. It has been noted that it is particularly difficult to formulate suspensions compatible with pesticidal compositions having a low pH. Therefore, those who make the formulas face the challenge of: how to improve the adherence of such particles to the plant propagation material, and how to provide compositions that satisfy the compatibility requirements. It has been discovered that a pesticide composition that It consists of certain type of surfactant compounds providing an unexpected reduction of the particles in the air (commonly known as "dust") when the treated plant propagation material, a seed, is handled (removed-enhanced dust). In addition, it has been discovered that such surfactant compounds provide compatibility between pesticidal compositions, especially when one has a lower pH. BRIEF DESCRIPTION OF THE INVENTION As a consequence, in a first aspect, the present invention provides an aqueous composition nematicide and / or insecticide for the treatment of seeds, in the form of a suspension comprising: (A) at least one insecticide and / or nematicide in an amount of at least 3% by weight, based on the total weight of the composition, and (B) at least two surfactant compounds, wherein (i) at least one is a compound of the anionic phosphate type and (ii) ) at least one is a non-ionic alkoxylated phenol. In an embodiment of the first aspect, an additional pesticide is also present. In a second aspect, the present invention provides a suspension composition (also known as "tank mix" or "ready to apply") consisting of the composition of the first aspect, a liquid carrier and optionally (i) one or more, preferably other adjuvants of the formulation, (ii) one or more different pesticidal compositions, each consisting of at least one additional pesticide or both (i) and (ii) • In a preferred embodiment of the second aspect, the suspension composition includes the pesticidal composition of the first aspect, a liquid carrier, (i) one or more, preferably others, adjuvants of the formulation, and (ii) one or more different pesticidal compositions, each comprising at least one additional pesticide . In a third aspect, the present invention provides a method of protecting the propagation material of plants, especially a seed, against the attack of pests, such as pests that inhabit the earth; in particular a nematode, by treating the material with an effective amount of the pesticidal composition, preferably nematicide, of the first or second aspect, preferably before planting or sowing the seed. Accordingly, the invention also provides a method for controlling that pests, such as the nematode, damage crop plants, especially those selected from cotton, soy and corn crop plants, by treating the plant propagation material, a seed, with an effective amount of the pesticidal composition, preferably nematicide, of the first or second aspect, preferably before to plant or sow the seed. In a fourth aspect, the present invention provides a plant propagation material resistant to pests consisting of a propagation material of plants, preferably a seed, such as cotton, soybean or corn seed, treated with an effective amount of pesticide, preferably nematicide, of the first or second aspect or obtained by the method of the third aspect. In a fifth aspect, the present invention provides the use of a composition of the first or second aspect, to improve the property of removing dust from the propagation material of plants, especially a seed, which has been treated with a composition, of at least two surfactant compounds, wherein (i) at least one is a compound of the anionic phosphate type, and (ii) at least one is an alcohol or non-ionic alkoxylated phenol. In another aspect, the present invention provides a method for improving the property of removing dust from a plant propagation material, especially a seed, which has been treated with a composition of first or second aspect, the method is to mix in the pesticidal or suspension composition, at least two surfactant compounds wherein, (i) at least one is an anionic phosphate type compound and (ii) at least one is an alkoxylated nonionic alcohol or phenol.

In a sixth aspect, the present invention provides the use of at least two surfactant compounds to improve the compatibility of a first pesticidal composition having a pH of 4 to less than 7, for example 4 to 6.5, preferably 4.5 to 6.5, more preferably 5 or 5.5 to 6.5, with a second pesticidal composition, wherein (i) at least one surfactant compound is an anionic phosphate type compound, and (ii) at least one surfactant is an alkoxylated nonionic alcohol or phenol. , and the surfactant compounds are present in either (I) a suspension composition that includes the first and second pesticidal compositions, or (II) the second pesticidal composition. In a further aspect, the invention also provides a method for improving the compatibility of a first pesticidal composition having a pH of 4 to less than 7 with a second pesticidal composition, the method consists of mixing at least two surfactant compounds, wherein ( i) at least one is a compound of the anionic phosphate type, and (ii) at least one is an alcohol or non-ionic alkoxylated phenol, (I) in a suspension composition comprising the first and second pesticidal composition, or (II) in the second pesticidal composition. DETAILED DESCRIPTION OF THE INVENTION The invention is described in more detail below.

Compositions It has been found that higher concentrations of solids (for example active ingredients) can be incorporated and maintained in satisfactory compositions according to the present invention. Accordingly, in one embodiment, the pesticide (or active ingredient) is present in the composition of the first aspect in an amount of from about 12.5% to about 60% by weight, more specifically, from 30 to about 55%, as well as 40 to 55% by weight of the composition; the balance of the composition, also known as a formulation consisting of water together with surfactant (s) and other optional inert ingredients known in the art as formulation adjuvants, for example, protective colloids, adhesives, thickeners, thixotropic agents, penetrating agents , preservatives, stabilizers, anti-foam agents, antifreeze agents, insulating agents, dyes, such as dyes or pigments and polymers. In the composition of the second aspect, the proportions of the components would be less than those of the first aspect and depends on the amount of the liquid carrier (usually water), which is normally present in a significant proportion and also in the presence of one or more, of the same or other formulation adjuvants and / or one or more different pesticidal compositions each containing a pesticide additional . The pesticide (or active ingredient) can be of any type, for example a fungicide, such as triazole derivatives, strobilurins, carbamate (including thiocarbamate), benzimidazoles (thiabendazole), N-trihalomethylthio (captan) compounds, substituted benzenes, carboxamides , phenylamides and phenylpyrroles, and mixtures thereof; an insecticide (such as neonicotinoids, carbamates and pyrethroids), acaricides, molluscicides and a nematicide. Preferably, the pesticide defined in the first aspect is an insecticide and / or nematicide. Preferred examples of suitable active ingredients (be they insecticidal, nematicidal or fungicidal) for a composition of the invention are selected from abamectin (1), acephate (2), acetamiprid (4), alpha-cypermethrin (202), azinphos-methyl ( 45), bifenthrin (76), carbaryl (115), carboxin (120), carbofuran (118), carbosulfan (119), chlorpyrifos (145), clothianidin (165), cyromazine (209), deltamethrin (223), dimethoate ( 262), emamectin benzoate (291), endosulfan (294), fipronil (354), furathiocarb (412), gamma-HCH (430), imidacloprid ((458), Isofenphos, methiocarb (530), ometoate (594), tefluthrin (769), thiamethoxam (792), thiacloprid (791), thiodicarb (799), azoxyestrobin (47), pyraclostrobin (690), benomyl (62), bitertanol (84), captan (114), carbendazim (116), carboxin (120), chlorothalonil (142), copper salts (such as copper sulphate) (172), cuprous oxide (181), Bordeaux mixture (87), copper hydroxide (169), copper sulfate (tribasic) (173), copper oxychloride (171) Y copper octanoate (170)), oxanil (200), cyproconazole (207), cyprodinil (208), diphenoconazole (247), diniconazole (267), etirimol, famoxadone (322), fenone idone (325), fenhexamide (334) ), fenpiclonil (341), fluazinam (363), fludioxonil (368), fluquinconazole (385), flutolanil (396), flutriafol (397), fosetyl-aluminum (407), fuberidazole (409), guazatine (422), hexaconazole (435), himexazole (447), imazalil (449), iprodione (470), isofenfós, mancozeb (496), maneb (497), metalaxyl (516), metalaxyl-M (517), metconazole (525), myclobutanil (564), siltiofam (729), nuarimol (587), oxadixil (601), copper-oxine (605), oxolinic acid (606), penicharon (620), prochloraz (659), procymidone (660), pyrimethanil (705), pyroquilone (710), quintozene (716), tebuconazole (761) ), tetraconazole (778), thiabendazole (790), thiophanate-methyl (802), thiram (804), triadimenol (815), triazoxide (821), triticonazole (842), trifloxiestrobin (832), picoxiestrobin (647) and ipconazole (468). In one embodiment of both the first and the second aspect, the active ingredient is selected from the active ingredients abamectin (1), emamectin benzoate (291), metalaxyl-M (517), thiamethoxam (792), difenoconazole (247), azoxyestrobin (47), tefluthrin (769), fludioxnil (368), imidacloprid (458), thiacloprid (791), clothianidin (165), and myclobutanil (564). Especially the composition of the first aspect includes abamectin and, favorably, the composition of the second aspect comprises abamectin, a neonicotinoid (such as thiamethoxam), azoxyestrobin, fludioxnil and metalxil-M. In a preferred embodiment, the pH of the composition of the first aspect and the second pesticidal composition of the sixth aspect is in the range of 6 to 8, as well as 6.5 to 7.5 or 6 to 6.5. Pesticides are described in the e-Pesticide Manual, version 3.0, 13th edition, Ed. CDC Tomlin, British Crop Protection Council, 2003-04. The number that follows the name of the compound is the entry number given in the Pesticide Handbook. Generally, the compositions of the first aspect are presented in the form of suspension concentrate (CS) or concentrate in suspension flow (SF). Suspension concentrate formulations for seed treatment typically have a viscosity of 300 to 1200, as much as 400 to 800, mPas-1, when measured on a BROOKFIELD viscometer with a spindle of 3 to 30 rpm and 25 ° C. The average size of the suspended particles is from 0.1 to 20, especially from 0.5 to 5, favorably from 1 to 3, microns, when measured with a particle laser analyzer, for example a Malvern.

Mastersizer S. Whereas, the compositions of the second aspect tend to be a diluted version of the previous ones.

The formulations, ie the compositions, preparations or combinations containing components (A) and (B) of the first aspect, are prepared in a known manner, for example, by intimately mixing and / or grinding the components with water.

The amount of surfactant compounds (B) generally present ranges between 1 and 25, preferably 2.4 to 22.5, especially 5 to 10% by weight, based on the weight of the composition of the first aspect. Surfactants are composed of water-soluble (or hydrophilic) groups (or components), such as polyoxyethylene, and water-insoluble groups (or components) (hydrophobic), such as polyoxypropylene. Some examples of surfactant compounds are surfactants with suitable emulsion, dispersion and wetting properties, depending on the nature of the pesticide to be formulated. Surfactants can also be understood as important mixtures of surfactants. In one embodiment, the molecular weight of the surfactant compounds (B) (i) and B (ii), independent of each other, is less than 2200, preferably less than 1700, in the range of 400 to 1500, preferably in the range from 600 to 1200. The surfactant compound (B) (i) preferably has a Hydrophilic-Lipophilic Balance (HLB) of at least 10, preferably in the range of 10 to 25, as well as 12 to 20, preferably from 14 to 18. The surfactant compound (B) (ii) preferably has a Hydrophilic-Lipophilic Balance (HLB) of at least 5, preferably from 7 to 20, and as 10 to 15. , the weight ratio of the surfactant compounds (B) (i) to (B) (ii) is in the range of 1:10 to 10: 1, preferably 5: 1 to 1: 1, especially 3: 1 to 1: 1 The value of the Hydrophilic-Lipophilic Balance (HLB) is an index of the hydrophilic nature of a compound proposed by Griffin. The HLB value of a polyoxyethylene alkyl ether can be determined by, for example, the Griffin equation. HLB value = [(molecular weight of the hydrophilic portion) / (molecular weight of the surfactant compound)] x 20. Groups, for example, sulfate and phosphate ions, can also contribute to the HLB value. Generally, the compounds, including the surfactant compounds that are used commercially tend not to be analytically pure, but a mixture of suitable compounds, for example, of the same chemistry but of different analogues, isomers and molecular weights. The characteristics attributed to, for example, the surfactant compounds (B) (i) and (B) (ii) are therefore also preferably satisfied in a mixture of compounds where a compound in the mixture possesses the characteristics; the compound is present in greater proportion, up to more than 50, preferably greater than 60, especially greater than 75% by weight, based on the weight of the mixture; more preferably, the mixture itself satisfies the defined characteristics. The surfactants commonly employed in formulation technology are described, inter alia, in the following publications: "McCutcheon's Detergents and Emulsifiers Annual," MC Publishing Corp., Glen Rock, NJ, 1988. M. Y J. Ash, "Encyclopedia of Surfactants ", Vol. 1-111, Chemical Publishing Co., New York, 1980-1981. Examples of a phosphate-type surfactant include an alkylphenol polyalkoxyether phosphate, a polyalkoxyether phosphate block copolymer, a polyarylphenol polyalkoxyether phosphate and an arylphenol polyalkoxyether phosphate. Examples of alkoxylated alcohols include an alkoxylated alcohol (such as alkoxylated oil, alkoxylated alcohol with C5 to C18 carbon atoms in the alcohol). Examples of alkoxylated phenols include polyalkoxyether of alkylphenol and polyalkoxyether of (poly) arylphenol. Preferably, the compound (B) (ii) is an alkoxylated phenol. Anionic surfactants could be present as acids or include alkali metals (such as lithium, sodium and potassium), alkaline earth metals (such as calcium and magnesium), ammonium and various amines (such as alkylamines, cycloalkylamines and alkanolamines). Some specific examples of suitable anionic surfactants include: Soprophor 3D33 (Rhodia), Soprophor PS19 (Rhodia) and Dowafax 30 C05 (Dow). Specific examples of nonionic surfactants include: Synperonic NP (Uniqema), Soprophor BSU (Rhodia), Rhodasurf BC-610 (Rhodia), Toximul 8240 (Stepan) and Synperonic 91/4 (Uniqema). The compositions of the invention may also contain a moisturizing agent, which is also considered a surface-active compound because it has a water-soluble (hydrophilic) component and a water-insoluble (hydrophobic) component, but they tend to be non-ionic and generally have a molecular weight less than 2000, and can therefore be a component according to (B) (ii). In a preferred embodiment of the first aspect, a moisturizing agent is not present. In a favorable manner, two surfactant compounds, one of (B) (i) and one of (B) (ii), are used in the compositions according to the first aspect. The compositions of the invention could also contain at least one antifreeze agent. In one embodiment, the antifreeze agent is present in at least about 2 and up to about 25%, more specifically from 3 to about 10% by weight, based on the weight of the composition of the first aspect. Specific examples of suitable antifreeze include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butanediol, 1,3-butanediol, 1, butanediol, 1,4-pentanediol, 3-methyl-1, 5 -pentanediol, 2,3-dimethyl-2, 3-butanediol, trimethylol propane, mannitol, sorbitol, glycerol, pentaerythritol, 1-cyclohexanedimethanol, xyleneol, bisphenols such as bisphenol A or others of the same class. In addition, ether alcohols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyoxyethylene or polyoxypropylene glycols of molecular weight up to about 4000, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol monomethyl ether, butoxy ethanol, butylene glycol monobutyl ether, dipentaerythritol, tripentaerythritol, tetrapentaerythritol, iglycerol , triglycerol, tetraglycerol, pentaglycerol, hexaglycerol, heptaglycerol and octaglycerol. As a particularly preferred subset of suitable antifreeze materials may be mentioned ethylene glycol, propylene glycol and glycerol. The compositions of the invention optionally include at least one polymer selected from film-forming polymers, which may be dispersed in water and which are soluble in water. Suitable polymers have an average molecular weight of at least about 7,000 up to around 200,000; more specifically, at least around 10,000 to around 100,000. The compositions of the invention generally contain from about 0% to about 10% by weight of the polymer composition, preferably in an amount from 1 to 7, as well as 2 to 6% by weight, based on the weight of the composition of the first aspect. As used in this work, "non-ionic surfactants" are different compounds from the polymers that can be dispersed in water and that are soluble in water described in this work. Suitable polymers are selected from di) copolymers of ethylene vinyl acetate, d2) vinyl acetate / vinyl pyrrolidone copolymers, d3) alkylated vinyl pyrrolidone copolymers, d4) polyvinyl pyrrolidone and, d5) polyalkylene glycol including polypropylene glycols and polyethylene glycols. The compositions of the invention also optionally contain at least one thickener. In one embodiment, the thickener is present in an amount of from about 0.01% to about 5% w / w, more specifically from 0.05 to 2% by weight, based on the weight of the composition of the first aspect. Examples of thickeners (water-soluble polymers that exhibit pseudoplastic properties in an aqueous medium) are gum arabic, karaya gum, tragacanth gum, guar gum, locust bean gum, xanthan gum, carrageenan, alginate salt, casein, dextran, pectin, agar, 2-hydroxyethyl starch, 2-aminoethyl starch, 2-hydroxyethylcellulose, methyl cellulose, carboxymethyl cellulose salt, cellulose sulfate salt, polyacrylamide, alkali metal salts of the maleic anhydride copolymers, and alkali metal salts of poly (meth) acrylate. Suitable thickeners include attapulguite, carrageenin, croscarmellose sodium, furcellaran, glycerol, hydroxypropylmethylcellulose, polystyrene, hydroxypropylcellulose, hydroxypropyl guar gum, and sodium carboxymethylcellulose. Xanthan gum and attapulguite type clay are preferred. The compositions of the invention can be used together with the usual adjuvants in formulation technology, biocides, biostats, emulsifiers (leticine, sorbitan, and others of the same kind), anti-foaming agents or application promoter adjusters usually employed in the art. of the formulation. In addition, inoculants and brighteners could be mentioned. Additionally, a coloring agent, such as dye or pigment, is included in the coating of the seed in such a way that an observer can immediately determine that the seeds are treated. The agent dye is also useful to indicate to the user the degree of uniformity of the applied coating. Generally, the coloring agent is also suspended in the compositions of the present invention. The compositions of the invention can be prepared by processes known in the art, such as forming a homogeneous suspension "with all the components, except the thickeners, and wet grinding the suspension until the desired particle size is reached, then the thickeners and more water to an established viscosity The final composition can be screened if desired to remove any insoluble particles In one embodiment, commercial products according to the first aspect are preferably formulated as concentrates (also known as "formulated products" or "Pre-mix"). They could be used undiluted or they could be diluted with a liquid carrier, such as water, and one or more components in a tank before use.The decision to dilute (by adding other components or lighter carrier) depends on the treatment methods available to the user.The composition according to the second aspect (also known as "tank mix" or "ready to apply") is an example of dilution of the composition of the first aspect. The liquid carrier in the suspension composition tends to be water.

The composition according to the first aspect may contain or be applied sequentially with other compounds on the propagation material, such as a seed, to form a seed coat. These other compounds can be fertilizers or micronutrient donors or other preparations that influence the growth of the plant. They can also be herbicides, fungicides, other insecticides, bactericides, insect growth regulators, plant growth regulators, nematicides, selective molluscicides or mixtures of several of these preparations. The pesticidal composition of the first aspect could be used alone or in combination with other pesticidal compositions for the treatment of propagation material, either together or sequentially. In a preferred embodiment, a composition of the first aspect is used in a suspension with other pesticidal compositions for treating seeds. Generally, a composition of the second aspect is that applied to control pests, for example, by the treatment of propagation material. In such an event, the composition would contain more types of formulation components than a composition of the first aspect, which is an ingredient in the preparation of the composition of the second aspect. Uses The compositions of the present invention may used to control plant pests by conventional methods. The pesticidal compositions according to the first and second aspects are used for the treatment of plant propagation material in such a way that the material has a degree of protection during its germination and growth. The term "plant propagation material" is understood to mean, all generative parts of the plant, such as seeds, which may be used for the multiplication of those and vegetative plant material such as cuttings and tubers (e.g. ). For example, seeds (in the strict sense), roots, fruits, tubers, bulbs, rhizomes, parts of plants could be mentioned. Germinated plants and young plants, which will be transplanted after germination or after emergence in the soil, could also be mentioned. These young plants could be protected before transplanting by a total or partial immersion treatment. The pesticidal compositions according to the first and second aspects are especially suitable for the treatment of seeds. Seed treatment application techniques are well known to those skilled in the art, and could easily be used in the context of the present invention. For the purposes of this invention, seed treatments are defined as chemical or biological substances that are applied to the seeds or propagation materials of vegetative plants, in order to control organisms that cause diseases, insects or other pests. The composition of the seed treatment includes pesticides, such as fungicides, bactericides, nematicides and other kinds of insecticides. Most seed treatments are applied to pure seeds, which have a seed coat surrounding an embryo. However, some seed treatments may be applied to propagation materials of vegetative plants such as rhizomes, bulbs, bulbous stems or tubers. The composition of the first aspect could be used, for example, for treatment in undiluted form or diluted with a liquid carrier, for example. In the case of dilution, such compositions are known as suspensions or tank mix and represent an example of the second aspect of the invention. The compositions of the first and second aspects can be applied to a seed to result in a film (or coating), a layer or a capsule of the pesticide on the seed after drying, depending on the treatment process. The processes are well known in the art and employ for seeds, for example, film coating or encapsulation techniques or, for the other propagation material, the techniques of, for example, immersion. Obviously, the method of applying the compounds to the seed can vary and it is intended that the invention include any technique that can be used. The compositions of the invention are formulated in order to protect the cultivated plants and their propagation materials. The compositions are formulated favorably for seed treatment applications against insects that inhabit the earth, which can damage the crop in the early stages of plant development. For example, the compositions can be formulated to attack insects and representatives of the order Acarnia which include: from the order of the Lepidoptera, for example, Acleris spp., Adoxophyes spp., Aegeria spp., Agrotis spp., Alabama argillaceae, Amylois spp., Anticarsia gemmatalis, Archips spp., Argyrotaenia spp., Autographa spp., Busseola fusca, Cadra cautella, Carposina nipponensis, Chilo spp., Choristoneura spp., Clysia ambiguella, Cnaphalocrocis spp. , Cnephasi spp., Cochylis spp., Coleophora spp., Crocidolomia binotalis, Cryptophlebia leucotreta, Cydia spp., Diatraea spp., Diparopsis castanea, Earias spp., Ephestia spp., Eucosma spp., Eupoecilia ambiguella, Euproctis spp., Euxoa spp., Grapholita spp., Hedya nubiferana, Heliothis spp., Hellula undalis, Hyphantria cunea, Keiferia lycopersicella, Leucoptera scitella, Lithocollethis spp., Lobesia botrana, Lymantria spp., Lyonetia spp., Malacosoma spp., Mamestra Brassicae, Manduca sixth, Operophtera spp., Ostrinia nubilalis, Pamene spp., Pandemis spp., Panolis flammea, Pectinophora gossypiella, Phthorimaea operculella, Pieris rapae, Pieris spp., Plutella xylostella, Prays spp., Scirpophaga spp., Sesamia spp. , Sparganothis spp., Spodoptera spp. , Synanthedon spp. , Thaumetopoea spp. , Tortrix spp. , Trichoplusia ni e Yponomeuta spp .; of the order of the Coleoptera, for example, Agriotes spp., Anthonomus spp., Atomaria linearis, Chaetocnema tibialis, Cosmopolites spp., Curculio spp., Dermestes spp., Diabrotica spp., Epilachna spp., Eremnus spp., Leptinotarsa decemlineata, Lissorhoptrus spp., Melolontha spp., Orycaephilus spp. , Otiorhynchus sp. , Phlyctinus spp. , Popillia spp., Psylliodes spp., Rhizopertha spp., Scarabeidae, Sitophilus spp., Sitotroga spp., Tenebrio spp., Tribolium spp. and Trogoderma sp. ,; of the order of the Orthopterans, for example, Blatta spp., Blattella spp., Gryllotalpa spp., Leucophaea maderae, Locusta spp., Periplaneta spp. and Schistocerca spp .; of the order of the Isoptera, for example, Reticulitermes spp .; of the order of the Psocópteros, for example, Liposcelis spp.,; of the order of the Anópluros, for example, Haematopinus spp., Linognathus spp., Pediculus spp., Pemphigus spp., And Phylloxera spp .; of the order of the Mallophaga, for example, Damalinea spp. and Trichodectes spp .; of the order of the Thysanoptera, for example, Frankliniella spp., Hercinothrips spp., Taeniothrips spp., Thrips palmi, Thrips tabaci and Scirtothrips aurantii; from the order of the Heteroptera, for example, Cimex spp., Distantiella theobroma, Dysdercus spp., Euchistus spp., Eurygaster spp., Leptocorisa spp., Nezara spp., Piesma spp., Rhodnius spp., Sahlbergella singularis, Scotinophara spp. and Triatoma sp.; of the order of the Homoptera, for example, Aleurothrixus floccosus, Aleyrodes brassicae, Aonidiella spp., Aphididae, Aphis spp., Aspidiotus spp., Bemisia tabaci, Ceroplaster spp., Chrysomphalus aonidiu, Chrysomphalus dictyospermi, Coccus hesperidum, Empoasca 'spp., Eriosoma larigerum, Erythroneura spp., Gascardia spp., Laodelphax spp., Lecanium corni, Lepidosaphes spp., Macrosiphus spp., Myzus spp., Nephotettix spp., Nilaparvata spp., Paratoria spp., Pemphigus spp., Planococcus spp., Pseudaulacaspis spp., Pseudococcus spp., Psylla spp., Pulvinaria aethiopica, Quadraspidiotus spp., Rhopalosiphum spp., Saissetia spp., Scaphoideus spp., Schizaphis spp., Sitobion spp., Trialeurodes vaporariorum, Trioza erytreae and Unaspis citri; of the order of Hymenoptera, for example, Acromyrmex, Atta spp., Cephus spp., Diprion spp., Diprionidae, Gilpinia polytoma, Hoplocampa spp., Lasius spp., Monomorium pharaonis, Neodiprion spp., Solenopsis spp., And Vespa spp.; from the order of the Diptera, for example, Aedes spp., Antherigona soccata, Bibio hortulanus, Calliphora erythrocephala, Ceratitis spp., Chrysomyia spp., Culex spp., Cuterebra spp., Dacus spp., Drosophila melanogaster, Fannia spp., Gastrophilus spp., Glossina spp., Hypoderma spp., Hyppobosca spp., Liriomyza spp., Lucilia spp., Melanagromyza spp., Musca spp., Oestrus spp., Orseolia spp., Oscinella frit, Pegomyia hyoscyami, Phorbia spp., Rhagoletis pomonella, Sciara spp. , Stomoxys spp. , Tabanus spp. , Tannia spp. , and Typula spp. , from the order of the Siphonaptera, for example, Ceratophyllus spp., Xenopsylla cheopis and the order of the Tisaranuros, for example, Lepisma saccharina; flea beetles (Phyllotreta spp.), seed flies (Delia spp.), weevil (Ceutorhynchus spp.), and aphids; and of the order of the Acáridos, for example, Acarus siró, Sheldoni mill, Aculus schlechtendali, Amblyomma spp., Argas spp., Boophilus spp., Brevipalpus spp., Bryobia praetiosa, Calipitrimerus spp., Chorioptes spp., Dermanyssus gallinae, Eotetranychus Carpini, Eriophyes spp., Hyalomma spp., Ixodes spp., Olygonychus pratensis, Ornithodoros spp., Panonychus spp., Phyllocoptruta oleivora, Polyphagotarsonemus latus, Psoroptes spp., Rhipicephalus spp., Rhizoglyphus spp., Sarcoptes spp. , Tarsonemus spp. , and Tetranychus spp. Protection of developing plants against the attack of plant parasitic nematodes is also obtained in case the pesticide is, for example, Abamectin. Abamectin is effective against a wide range of nematode pests including Meloidogyne species (eg, Meloidogyne incognita and Meloidogyne javanica), Heterodera (eg, Heterodera glycines, Heterodera schachtii, Heterodora avenae and Heterodora trifolii), Globodera (eg, Globodera rostochiensis), Radopholus (for example, Radopholus similes), Rotylenchulus, Pratylenchus (for example, Pratylenchus neglectans and Pratylenchus penetrans), Aphelenchoides, Helicotylenchus, Hoplolaimus, Paratrichodorus and Tylenchorhynchus, in particular Meloidogyne. The composition of the first and second aspects, in the event that abamectin is present as a pesticide, is particularly effective in the control of nematodes. Optionally, in addition to the control of insect pests, the compositions of the invention are favorably formulated with fungicides for applications of seed treatment against diseases that are generated in the soil, which occur to a greater extent in the early stages of development of the plants. For example, the compositions can be formulated to attack pathogens including Pythium, Tilletia, Gerlachia, Septoria, Ustilago, Fusarium, Rhizoctonia (also called "seedling fall complex"); Oomycetes such as Phytophtora, Plasmopara, Pseudoperonospora, Bremia, etc., as well as against the species Botrytis, Pyrenophora, Monilinia and other representatives of the classes of Ascomycetes, Deuteromycetes and Basidiomycetes. Suitable target crops are potatoes, cereals (wheat, barley, rye, oats), rice, corn, sugar beet, cotton, millet varieties, sorghum, tobacco, sunflowers, beans, peas, oilseeds (rapeseed, cañola), beans of soybeans, cabbages, tomatoes, eggplants, peppers and other vegetables and spices, as well as ornamental shrubs and flowers. Suitable target crops also include transgenic crop plants of the preceding varieties. The transgenic cultivation plants used according to the invention are plants, or propagation material thereof, which are transformed by means of recombinant DNA technology, such that they are, for example, capable of synthesizing selective action toxins such as they are known, for example, from toxin-producing invertebrates, especially from the Arthropod phylum, as can be obtained from strains of Bacillus thuringiensis; or as they are known from plants, such as lectins; or in the alternative capable of expressing a herbicidal or fungicidal resistance. Examples of such toxins or transgenic plants that are capable of synthesizing these toxins have been disclosed, for example, in EP-A-0 374 753, WO 93/07278, WO 95/34656, EP-A-0 427 529 and EP-A-451 878 and are incorporated by reference in the present application. The compositions are suitable for coating applications on the plant propagation material. The last term includes seeds of all kinds (fruits, tubers, grains), cuttings, segments and the like. The preferred field of application is the treatment of all kinds of seeds (as specified in the aforementioned target crops), and in particular the treatment of canola seeds, corn, cereals, cotton, tomatoes, tobacco, soybeans, other legumes and other vegetables and crops that are susceptible, especially the seeds of cotton, corn and soybean. As noted above, the compositions of this invention can be formulated or mixed in the seed treatment tank or combined in the seed by coating with other binder materials and / or seed treating agents. The agents to be mixed with the compounds of this invention can be for the control of pests, for nutrition and for the control of plant diseases. The composition has particular application for concomitant and sequential seed treatments. Seeds treated with the compositions of the invention generally have a drying time ranging from 20 to 60 seconds when treated at room temperature. Generally, a spray-drying technique is used for vegetable seeds. A preferred method of application of the composition according to the invention consists in spraying or moistening the plant propagation material with the liquid preparation or mixing the plant material with such a liquid preparation. Furthermore, before the application, the composition of the invention can be diluted with water by simple mixing at room temperature in order to prepare a formulation for the treatment of the seed in the field. The formulation can be applied, for low value crops, such as cereals, at application volumes ranging from 200 ml. and 3 liters per 100 kg. of seeds, more specifically, 400 ml. to 2 liters per 100 kg. of seeds. For vegetable crop seeds, the amount tends to be higher. A positive feature of the composition is that it provides a greater adhesion of particles, especially particles of air, to the seed, which results in a decrease in dust and the subsequent eradication of problems related to dust. The elimination of dust associated with many seed treatments also rules out health-related risks for those who work with treated seeds, such as processing plant employees, truck drivers, warehouse employees and farmers. The compositions of the present invention also allow a satisfactory flowability and individuality of the propagation material (i.e., they allow the material to be easily handled and not to stick to each other). Even another advantage of this invention is the uniform coating of the seeds with anti-dust seed treatment that does not interfere with the germination and the time when the seeds sprout, but which protects the seed and the resulting seedling against the pests, in particular plagues of the earth. The application of the compositions according to the invention directly on a seed, piece of seed or root-dipping treatment for the early protection of seasonal crops has various advantages, both from an economic and environmental point of view. . By treating seeds, pieces of uncovered seeds or roots, preferably before planting or sowing, with a pesticide, for example, a nematicide in the case of Abamectin, the pesticide is concentrated at the site of the pest, for example, the nematode , attack and, consequently, Much less active ingredient per acre is needed compared to conventional onshore application. This not only makes pest control more economical, but also minimizes any environmental disturbance and any unintended adverse effects. As used in the present application, the embodiments of the features of the present invention are independent of each other, unless otherwise specified. The following Examples are provided by way of illustration and not limitation of the invention. Examples Formulation examples A, B, 1 and 2 are prepared by mixing surfactant (s), thickening agent, polymer (if any), suspension aid (if any), antifoaming agent, preservative and anti-freeze agent with water until a homogeneous phase is achieved. Subsequently, abamectin is added and mixed. The resulting mixture is wet milled through a sand mill (Dyno, Drais, Premier for example). The milling parameters are set in such a way that the average particle size of the resulting ground premix is within the specifications (usually the mean average particle size is at most 2.0 um). Finally, the buffer (if there is one) and a smaller amount of water are added and the product is mixed final for at least 30 minutes. Table 1 indicates its details of composition, with the antifoaming agent, preservative, thickening agent and water omitted. Compatibility Studies Each pesticidal formulation of example A, B, 1 and 2 is mixed with an insecticidal formulation (X) with a pH of about 5.5 to form a suspension composition and its compatibility is observed. It was found that examples 1 and 2 provided better compatibility (i.e., less flocculation and better homogeneity) than examples A and B. Seed treatment studies The rate of treatment of the compositions on the seeds is such that an amount is applied. equivalent of solid material (eg, active ingredient and coloring agent) on the seeds. A composition without Abamectin: A suspension composition containing an insecticidal formulation (X), a composition (Y) containing calcium carbonate, a pesticidal fungicidal formulation and a coloring agent, a polymer (Z) and water, is treated by the Hege seed treatment device on cotton seeds. Without polymer: Each example of pesticide formulation A, B, 1 and 2 is mixture with an insecticidal formulation (X) and water, and treated with the Hege seed treatment device on cotton seeds that have already been treated with a composition (Y) containing calcium carbonate, a fungicidal pesticide formulation and an agent Colorant. Measurements of dust reduction The amount of "dust" fired by the treated seeds is measured by placing the treated seeds in a plastic drum with blades, which causes that, when the drum is rotated, the handling and transport of the seeds is stimulated. A precision airflow control system provides a constant air flow that transports particles from the air through a coarse-grained filter separator to a filter. The amount of powder is measured by weighing the filter. The data from the dust reduction measurements are given in Table 2. The data clearly shows that the seeds treated with compositions containing the surfactant compounds combination (formulations 1 and 2) provide less airborne particles, ie, higher powder decrease, compared to the compositions containing the formulations A and B. Further and surprisingly, the amount of powder of the compositions containing the formulations 1 and 2 is lower than that of the seeds treated with a composition not containing Abamectin , that is, a composition with less solids content on the seed, Table 1: Table 2: It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (7)

2. Having described the invention as above, the content of the following claims is claimed as property: 1. Nematicidal aqueous composition and / or insecticide for the treatment of seeds in the form of a suspension characterized in that: (A) at least one insecticide and / or nematicide in an amount of at least 3% by weight, based on the total weight of the composition, and (B) at least two surfactant compounds, wherein (i) at least one is a compound of the anionic phosphate type, and (ii) at least one is a nonionic alkoxylated phenol. Composition according to claim 1, characterized in that the molecular weight of the surfactant compound (B) (i) is less than 2200, preferably less than 1700, as well as in the range of 400 to 1500, more preferably in the range of 600 to 1200.
3. 3. Composition according to claim 1 or claim 2, characterized in that the molecular weight of the surfactant compound (B) (ii) is less than 2200, preferably less than 1700, as well as in the range of 400 to 1500, preferably in the range of 600 to 1200.
4. 4. Composition in accordance with any of the claims 1 to 3, characterized in that the composition is a suspension composition.
5. 5. Composition according to any of claims 1 to 4, characterized in that (A) is abamectin. 6. Suspension composition characterized in that it comprises the composition according to claims 1 to 5, a liquid carrier and optionally (i) one or more adjuvants of the formulation, (ii) one or more pesticidal compositions, each containing at least one an additional pesticide, or both (i) and (ii). 7. Method characterized in that it is for protecting the plant propagation material from the attack of pests by treating the material with an effective pesticidal amount of the composition according to any of claims 1 to
6. 6. 8. Plant propagation material resistant to the pests characterized in that it comprises a plant propagation material treated with an effective pesticidal amount of the composition according to any of claims 1 to 6 or obtained by the method mentioned in claim 7.. Use in a pesticidal or suspension composition, to improve the dust removal property of a plant propagation material that has been treated with the composition of at least two surfactant compounds, wherein (i) at least one is a compound of the anionic phosphate type, and (ii) at least one is an alcohol or non-ionic alkoxylated phenol. 10. Use of at least two surfactant compounds to improve the compatibility of a first pesticidal composition having a pH of less than 7 with a second pesticidal composition, wherein (i) at least one surfactant is a compound of the aryonic phosphate type, and (ii) the at least one surfactant is an alkoxylated nonionic alcohol or phenol, and the surfactant compounds are present in either (I) a suspension composition comprising the first and second pesticidal compositions, or (II) the second pesticide composition. 11. Suspension composition according to claim 5 or 6, characterized in that one or more pesticidal compositions (ii) has a pH of less than
7. 7.