JP2022000448A - Water surface floating granule composition - Google Patents

Abstract

To obtain a water surface floating granule composition excellent in productivity and preparation characteristics.SOLUTION: The present invention relates to a water surface floating granule composition obtained by extrusion molding containing starch, bentonite, a buoyancy material, surfactant, an agriculturally active component and water and its use.SELECTED DRAWING: None

Description

The present invention relates to a water-floating granule composition obtained by extrusion molding containing starch, bentonite, a buoyant material, a surfactant, a pesticide active ingredient and water, and a method for using the same.

As general pesticide preparations, powders, granules, wettable powders, water solvents, flowable agents, liquids, emulsions and the like are known. Of these, spraying agents such as wettable powders, water solvents, and emulsions are mainly used in upland fields and non-agricultural lands, but wettable powders and water solvents cause problems for workers' health due to dusting. There is a problem of environmental impact, and emulsions have problems of environmental pollution caused by solvents and emulsifiers and problems of fire danger caused by organic solvents. In addition, many of the active ingredients of pesticides are difficult to dissolve in water, and it is often difficult to formulate them into liquids. For these reasons, the use of aqueous or oily suspension preparations (flowables) or dry flowable agents, which have less problems, has recently tended to increase.

On the other hand, examples of the water surface application agent for paddy fields include powders and granules, and conventionally, granules have been mainly used. Generally, 3 to 4 kg of granules are applied per 10 ares, but in recent years, there has been an increasing demand for labor-saving spraying of pesticides, and it is necessary to develop a small amount spraying agent that reduces the application rate of the pesticide preparation. However, if an attempt is made to reduce the application rate of the granules, the content of the pesticide active ingredient in the granules will inevitably increase, and the number of granules per unit area will decrease. These are factors that directly affect the biological effects of the pesticide active ingredient and the phytotoxicity on crops, and it is required to treat the pesticide preparation as uniformly as possible throughout the paddy field. However, in order to evenly spray the 1 kg granules developed in recent years to flooded paddy fields, some skill and experience are required, and in some cases, a spraying device is required, which saves labor. It cannot be said that the desired dosage form is always satisfactory.

Therefore, in the field of water surface application agents for paddy fields, there are many developments of aqueous suspension preparations for the purpose of labor saving and efficiency improvement at the time of spraying. Unlike the aqueous suspension formulation used in upland fields and non-agricultural land, this formulation is dropped or poured directly from the container into the paddy field without diluting the formulation, so no special spraying equipment is required and processing is required. Since the amount is as small as 200 ml to 1 liter per 10 ares, it has the feature of being light and easy to handle. Since it is a formulation that can be treated (so-called water mouth treatment) and can be treated extremely labor-saving, the market is expanding rapidly after its release. However, since the aqueous suspension preparation is a preparation in which the pesticide active ingredient is dispersed or emulsified in water, it has a problem that it is difficult to apply to the pesticide active ingredient which is easily hydrolyzed.

In recent years, as a formulation that saves labor in spraying pesticides and is environmentally friendly, it is a formulation for throwing paddy fields (pack or jumbo) in which solid formulations such as tablets, bean granules, and granules are wrapped in water-soluble paper such as water-soluble film. ) Is becoming more widespread. Although such a formulation has the advantage that it can be easily treated with pesticides for paddy fields, it is not uniformly treated like the conventional treatment of granules and powders, and when these solid formulations are thrown into water, the formulation becomes It settles on the surface of the soil, where the sediment does not foam or foam, and the active ingredient of the pesticide is dispersed in the water on the surface of the field. In addition, since the dissolved pesticide active ingredient forms a high-concentration solution near the surface of the soil at the drop point, it is easily adsorbed on the soil. Therefore, even if the water solubility of the pesticide active ingredient of the paddy field throwing formulation in which these solid formulations are wrapped with water-soluble paper such as a water-soluble film is considerably high, the pesticide active ingredient is present in the soil near the drop point of the formulation. It is adsorbed at a high concentration, and depending on the field conditions, weather conditions, etc., it has a drawback that it is liable to cause chemical damage and uneven efficacy due to non-uniformity of the pesticide active ingredient, and adversely affect the posterior crop.

As such granules, many effervescent tablets have been developed in the past, but the use of non-effervescent granules has become the mainstream due to problems in terms of manufacturability and storage stability. For example, a composition (Patent No. 2815535; Patent Document 1) in which a pharmaceutical product containing a pesticide active ingredient and a fired vermiculite or foamed pearlite, foamed silas, cork and an acetylene-based surfactant is wrapped in a water-soluble film, and a pesticide active ingredient. Granules or tablets in which a powder base having a specific gravity of 1 or less and a surfactant having a large ability to reduce surfactant tension are uniformly dispersed (Japanese Patent Laid-Open No. 7-23302; Patent Document 2), and granule nuclei containing an active ingredient of pesticides having a specific gravity of 1 or less. A surfactant having a large ability to reduce the surfactant tension, a pesticide preparation coated with an oily substance (Japanese Patent Laid-Open No. 9-183701; Patent Document 3), one or more kinds of pesticide active ingredients, α-olefin sulfonate, etc. A pesticide preparation containing a surfactant and a granule having an apparent specific gravity of less than 1 (Japanese Patent Laid-Open No. 2000-239103; Patent Document 4) has been published as a technique for improving the spreadability of water-suspended granules.

Patent No. 2815535 Japanese Patent Application Laid-Open No. 7-23302 Japanese Patent Application Laid-Open No. 9-183701 JP 2000-239103

On the other hand, since the water-floating granules contain auxiliary ingredients having different specific densities such as an active pesticide ingredient, a spreading agent, a buoyant material, and a binder, they are produced by extruding and granulating a pesticide composition containing these appropriately. Will be done. From this, (1) the moldability of the pesticide composition at the time of extruded granulation is good, (2) the physical and chemical properties of the obtained pesticide preparation are good, and (3) the stability of the pesticide active ingredient is stable. The selection of a bulking agent that does not adversely affect the sex is an issue in the design of the formulation, but the technology for simultaneously solving these issues has not been disclosed so far.

An object of the present inventors is to find a water-floating granule containing a pesticide active ingredient and a buoyant material, which has good moldability at the time of extrusion and has good pharmaceutical properties and storage stability of the pesticide active ingredient. As a result of diligent studies, surprisingly, the pesticide composition containing starch, bentonite, buoyant, surfactant, pesticide active ingredient and water, which is a water-floating granule obtained by extrusion molding. It is possible to obtain a water-floating granule having good composition in terms of moldability at the time of extrusion granulation, chemical stability of the pesticide active ingredient, and physicochemical stability of the pharmaceutical product. The present invention was completed.
That is, the present invention is as follows [1]-[11].
[1] A water-floating granule composition containing starch, bentonite, a buoyant material, a surfactant, an active pesticide ingredient, and water.
[2] The water-floating granule composition according to [1], wherein the starch is at least one selected from the group consisting of cornstarch, potato starch and tapioca starch.
[3] The water-floating granule composition according to [1], wherein the starch is cornstarch.
[4] The water-floating granule according to any one of [1] to [3], wherein the buoyancy material is at least one selected from the group consisting of calcined vermiculite, foamed shirasu, foamed pearlite, cork and styrofoam. Composition.
[5] The water-floating granule composition according to any one of [1] to [4], wherein the active ingredient of the pesticide is the active ingredient of the herbicide.
[6] Any of [1] to [5], wherein the pesticide active ingredient is (A1) a bleaching herbicidal compound or a salt thereof and / or (A2) an acetactate synthase-inhibiting herbicidal compound or a salt thereof. The water-floating granule composition according to.
[7] (a) a step of mixing starch, bentonite, a buoyant, a surfactant, an active ingredient of agrochemicals and water, and other auxiliary ingredients as necessary, and wet granulation, and (b) obtained in the above step. The method for producing a water-suspended granule composition according to any one of [1] to [6], which comprises a step of drying, crushing and sieving the starch.
[8] A method for applying a water-floating granule composition according to any one of [1] to [7], wherein the water-floating granule composition is directly sprayed on a paddy field.
[9] The water-floating granule composition according to any one of [1] to [7] is encapsulated in a water-soluble film and sprayed directly onto a paddy field. How to apply.
[10] A pesticide preparation comprising encapsulating the water-floating granule composition according to any one of [1] to [7] in a water-soluble film.

According to the present invention, the water-floating granule composition obtained by extrusion molding containing starch, bentonite, buoyant material, surfactant, pesticide active ingredient and water can be obtained in terms of moldability during extrusion granulation. It is possible to obtain water-floating granules having good chemical stability of the pesticide active ingredient and further in terms of the physicochemical stability of the pharmaceutical product.

Next, various terms used in the present specification will be described.
The content of the pesticide active ingredient of the present invention in the water-floating granules may be any amount as long as it can be formulated and is not particularly limited, but is usually 0.1 to 50 per 100 weight of the composition of the present invention. It is parts by weight, more preferably 1 to 40 parts by weight.
The pesticide active ingredient contained in the water-floating granule of the present invention is a herbicidal active ingredient, an insecticidal active ingredient, a bactericidal active ingredient, an acaricide active ingredient, a plant regulator ingredient, etc. or a mixed ingredient thereof, and is a granule composition. Any of them may be used as long as it is stable, but the physical properties of the substance itself are not particularly limited, but the herbicidal active ingredient is suitable.

The herbicidal active ingredient contained in the floating granules of the present invention is not particularly limited, but a whitening type herbicidal compound or a salt thereof and / or an acetactate synthase-inhibiting type herbicide compound or a salt thereof is suitable.

Whitening herbicidal compounds are well-known herbicides that whiten and kill weeds. As the whitening type herbicidal compound, for example, a pyrazole-based herbicidal compound and a triketone-based herbicidal compound are widely known.

Examples of the pyrazole-based herbicidal compound include pyrazolate, pyrazoxifene, and benzophenap, and examples of the triketone-based herbicidal compound include mesotrione, sulcotrione, benzobicyclon, tefryltrione, and bicyclopyrone.

Acetractate synthase (ALS) -inhibiting herbicidal compounds are well-known herbicidal compounds that inhibit the synthesis of the essential amino acids valine, leucine and isoleucine by inhibiting ALS and kill weeds. As the ALS-inhibiting herbicidal compound, for example, a sulfonylurea-based herbicidal compound, a pyrimidinyl salicylic acid-based herbicidal compound, a triazolopyrimidine-based herbicidal compound, and the like are widely known.

Sulfonylurea herbicidal compounds include, for example, adimsulfuron, bensulfuronmethyl, cyclosulfamron, halosulfuronmethyl, ethoxysulfuron, imazosulfuron, pyrazosulfuronethyl, chlorimlonethyl, sinosulfone, metsulfuronmethyl, flusetosulfuron. , Propyrisulfuron, Metazosulfuron, etc.

The pyrimidinyl salicylic acid-based herbicidal compound is, for example, bispyrivac, pyribenzoxim, pyriphthalide, pyrimisulfan, pyrimisulfan, triafamon and the like.

The triazolopyrimidine-based herbicidal compound is, for example, penoxslam.

The insecticidal active ingredient contained in the floating granules of the present invention is not particularly limited. Thiamethoxin, thiacloprid, pyridafenthion, dimethoate, PMP, CVMP, dimethylbinphos, DEP, NAC, MTMC, MIPC, PHC, MPMC, XMC, benfracarb, pyrimicalve, oxamil, thiodicalve, cypermethrin, cartap, benzultap, diflubenzlone Fluazuron, buprofezin, hexithiazox, fenbutatin oxide, pyridaben, clofentedin, batilus turingensis and the toxins they produce, MPP, MEP, diazinon, isoxathione, ethylthiometon, etofenprox, tralomethrin, cypermethrin, cycloprothrin, Examples include benfracarb and brofuranilide.

The bactericidal active ingredient contained in the floating granules of the present invention is not particularly limited. Phosmethyl, Josetil, Thiophanate Methyl, Benomyl, Carventazole, Thiabentazole, Dietofencarb, Iprodion, Vinclozoline, Procymidone, Fluorimide, Oxycarboxyne, Mepronil, Frutranyl, Pencyclon, Metalaxil, Oxadixil, Triazimefone, Hexaconazole, Triphorin, Blast Examples thereof include cydin S, kasugamycin, polyoxin, baridamycin A, PCNB, dazomet, triazine, probenazole, isoprothiolane, tricyclazole, tetraconazole, tricramide, oxolinic acid, dimethomorph, simoxanil, tolprocarb, MON-240 and the like.

The plant growth regulator contained in the water-floating granules of the present invention is not particularly limited, and for example, maleic acid hydrazide and its salts, abscisic acid, calcium peroxide, inabenfide, paclobutrazol, uniconazole, triapentenol, etc. Psychocell etc. can be mentioned.

As the further pesticide active ingredient arbitrarily used in the present invention, one kind such as the above-mentioned herbicide, insecticide, fungicide, acaricide, plant growth regulator and the like, or two or more kinds exceeding the kind can be used. ..

As the starch used in the present invention, starch made from various plants can be used. For example, starch made from tapioca, potatoes and corn can be used, and cornstarch made from corn is particularly suitable. As the starch used in the present invention, any starch can be used regardless of the form, but a solid starch is preferable. The blending ratio in the water-floating granules of the present invention is preferably 1 to 50% by weight, more preferably 1 to 30% by weight, based on the total amount of the granule composition.

As the bentonite used in the present invention, bentonite produced from various production areas can be used. Bentonite is a general term for clays containing montmorillonite as the main component, and is composed of layered aluminum phyllosilicate and is classified by cation species including sodium and calcium. Bentonite used in the present invention. Although various cationic species of bentonite can be used, sodium bentonite is particularly preferable. The blending ratio in the water-floating granules of the present invention is preferably 1 to 30% by weight, more preferably 1 to 20% by weight, based on the total amount of the granule composition.

The buoyancy material used in the present invention is not particularly limited as long as it is a granular material having a water-floating property, and is, for example, a hollow mineral carrier such as calcined vermiculite, foamed silas, and foamed pearlite; a plant carrier such as cork; Examples thereof include granules such as synthetic resin foams such as foamed styrol and buoyancy materials formed by containing one or more of these and having the property of floating on water, preferably calcined vermiculite, foamed pearlite or. Cork. The blending ratio in the water-floating granules of the present invention is preferably 1 to 50% by weight, more preferably 5 to 30% by weight, based on the total amount of the granule composition.

The surfactant used in the present invention is not particularly limited as long as it is used for ordinary pesticides, and is an anionic surfactant, a nonionic surfactant, a cationic surfactant or an amphoteric surfactant. Any surfactant such as an activator can be used, and one or more of these can be used.

Examples of the anionic surfactant include an alkyl phosphate ester salt, an alkyl sulfate ester salt, a polyoxyalkylene alkyl ether phosphoric acid ester salt, a polyoxyethylene alkyl ether sulfuric acid ester salt, an alkylaryl phosphoric acid ester salt, and an alkylaryl sulfate ester salt. , Polyoxyalkylene alkylaryl ether phosphoric acid ester salt, polyoxyalkylene alkylaryl ether sulfate ester salt, alkylphenol phosphate, alkylphenol phosphate ester salt, alkylphenol sulfate, alkylphenol sulfate ester salt, polyoxyalkylene alkylphenol phosphate, polyoxyalkylene alkylphenol Phosphoric acid ester salt, polyoxyalkylene alkylphenol sulfate, polyoxyalkylene alkylphenol sulfate ester salt, styrylphenol phosphate, styrylphenol phosphate ester salt, styrylphenol sulfate, styrylphenol sulfate ester salt, polyoxyalkylenestyrylphenol phosphate, poly Oxyalkylene Stylylphenol Phosphate Ester, Polyoxyalkylene Stylylphenol Sulfate, Polyoxyalkylene Stylylphenol Sulfate, Distyrylphenol Ester, Distyrylphenol Phosphorus Ester, Distyrylphenol Sulfate, Distyrylphenol Sulfate , Polyoxyalkylene distyrylphenol phosphate, polyoxyalkylene distyrylphenol phosphate ester, polyoxyalkylene distyrylphenol sulfate, polyoxyalkylene distyrylphenol sulfate ester, tristilylphenol phosphate, tristilylphenol phosphate ester Salt, Tristilylphenol Sulfate, Tristilylphenol Sulfate Ester, Polyoxyalkylene Tristilylphenol Phosphate, Polyoxyalkylene Tristilylphenol Phosphate Ester, Polyoxyalkylene Tristilylphenol Sulfate, Polyoxyalkylene Tristilylphenol Sulfate Examples thereof include ester salts, alkyl succinate sulfonates, dialkyl succinate sulfonates or polyoxyalkylene dialkyl succinate sulfonates, and preferred are alkyl phosphoric acid ester salts, polyoxyalkylene alkyl ether phosphoric acid ester salts and alkyl. Aryl Phosphate Ester Salt, Polyoxyalkylene Alkylaryl A Telluric acid ester salt, alkylphenol phosphate, styrylphenol phosphate ester salt, polyoxyalkylene styrylphenol phosphate ester salt, distyrylphenol phosphate, distyrylphenol phosphate ester salt, polyoxyalkylene distyrylphenol phosphate, polyoxyalkylene di Examples thereof include styrylphenol phosphate ester salt, tristilylphenol phosphate, tristilylphenol phosphate ester salt, polyoxyalkylene tristilylphenol phosphate or polyoxyalkylene tristilylphenol phosphate ester salt.

Examples of the nonionic surfactant include an aliphatic alcohol alkylene oxide adduct, a polyalkyleneoxy fatty acid ester, a sorbitan-based surfactant or an alkylene oxide adduct thereof, a polyglycerin fatty acid ester, and an alkylpolysaccharide-based surfactant. Scroglyceride, polyoxyalkylene alkyl ether, polyoxyethylene alkyl ether, polyoxyalkylene alkylaryl ether, polyoxyalkylene alkylphenol ether, polyoxyalkylene styrylphenol ether, polyoxyalkylene distyrylphenol ether or polyoxyalkylene tristylylphenol Examples thereof include ethers, preferably polyoxyalkylene alkyl ethers, polyoxyethylene alkyl ethers, polyoxyalkylene alkyl aryl ethers, polyoxyalkylene alkyl phenol ethers, polyoxyalkylene styryl phenol ethers, polyoxyalkylene distyryl phenol ethers or Examples thereof include polyoxyalkylene tristylylphenol ether.

In addition, in the type of surfactant to which these ethylene oxides are added, propylene oxide may be contained as a part thereof.

Examples of the cationic surfactant include an aliphatic tertiary amine or a salt thereof, an aliphatic tertiary amine aliphatic amine alkylene oxide adduct or a salt thereof, or an aliphatic quaternary amine salt.

Examples of the amphoteric surfactant include amino acid-type amphoteric surfactants such as sodium laurylaminopropionate; and carboxylate-type surfactants such as betaine-type amphoteric surfactants such as lauryldimethylbetaine, stearyldimethylbetaine, and lauryldidihydroxyethylbetaine. Examples thereof include amphoteric surfactants; sulfate ester salt-type amphoteric surfactants; sulfonate-type amphoteric surfactants; or phosphoric acid ester salt-type amphoteric surfactants.

The surfactant used in one embodiment of the water-floating granules used in the present invention is preferably an anionic surfactant or a nonionic surfactant.

The blending ratio of the surfactant used in one embodiment of the water-floating granules used in the present invention is usually 0.01 to 0.01 in the water-floating granules with respect to the total amount of the granule composition. It is 20% by weight, preferably 0.1 to 10% by weight.

The oil-absorbent carrier used in the present invention is not particularly limited as long as it is used for ordinary pesticides, and is, for example, powdery granules such as amorphous silicon dioxide, diatomaceous earth, silica gel, pearlite, activated carbon and plant powder, and these. Examples thereof include an oil-absorbing carrier containing one or more of the above, preferably vegetable powder, pearlite or amorphous silicon dioxide. The blending ratio of the oil-absorbent carrier in the water-floating granules of the present invention is usually preferably 0.1 to 30% by weight, more preferably 1 to 10% by weight, based on the total amount of the granule composition. The formulation is suitable.

Other auxiliary agents can be added to the water-floating granules of the present invention for various purposes. As other auxiliary agents, for example, auxiliary agents such as binders, antifoaming agents, fungicides, solvents or stabilizers, that is, colorants, bulking agents, preservatives and pH adjusters can be added. ..

Examples of the binder used in the water-floating granules of the present invention include dextrin, polyvinyl alcohol, polyvinylpyrrolidone, a salt of carboxymethyl cellulose, methyl cellulose, gum arabic, polyethylene glycol or a derivative thereof, tab powder, lignin sulfonate, and the like. Examples thereof include carboxylic acid or sulfonic acid type polysoap. Of these, lignin sulfonate or carboxylic acid or sulfonic acid type polysoap can also be used as a dispersant and is suitable.

The defoaming agent used in the water-floating granules of the present invention is not particularly limited as long as it is usually used in pesticide preparations, but is lower grade such as methanol, ethanol, isopropanol, sec-butanol and butanol. Alcohol-based defoamers; amyl alcohol, diisobutyl carbitol, tributyl phosphate, oleic acid, tall oil, metal shavings, low HLB surfactants (eg, sorbitan lauric acid monoester, sorbitan lauric acid triester, polyethylene glycol fatty acids) Organic polar compound defoamers such as esters, acetylene glycol derivatives, pluronic® nonionic surfactants, etc.; surfactant formulations of mineral oils, mineral oils and fatty acid metal salts Mineral oil-based defoamers such as surfactant-blended products; silicone resin, silicone resin surfactant-blended products, silicone resin-based defoaming agents such as silicone resin inorganic powder blended products, and the like can be mentioned.

The antifungal agent used in the water-floating granules of the present invention is not particularly limited as long as it is usually used in pesticide preparations, and for example, parachloromethoxylenol, polyhesamethylenebiguanididehydrochloride, and the like. 1,2-Benzisothiazolin-3-one, methylparahydroxybenzoate, ethylparahydroxybenzoate, propylparahydroxybenzoate, butylparahydroxybenzoate, heptylparahydroxybenzoate, benzylparahydroxybenzoate, paraoxybenzoic acid ester, sorbic acid, Orthophenylphenol, Sodium Orthophenylphenate, Glutardialdehyde, Tertiary ammonium compound, Tri- (N-chlorohexyldiazenium dioxy) -aluminum, Tetrahydro-3,5-dimethyl-2H-1,3 5-Thiadiadin-2-thione, 2,5-dimethoxytetratransferase, dimethylolurea, sodium N-methyldithiocarbamate, phenoxyethanol, glyoxal, glutaaldehyde, 1,3,5-tris (2-hydroxyethyl) -1,3, Examples thereof include 5-hexahydrotriazine, benzalconium chloride, phenoxypropanol, tetramethylacetylenediurea, povidoneiodin, potassium sorbate, 2-bromo-2-nitropropane-1,3-diol or thiazolone.

The solvent used for the water-floating granules of the present invention is not particularly limited as long as it is usually used for pesticides, but it is desirable that the solvent has a flash point of 2nd petroleum or higher. For example, alkylbenzene, methylnaphthalene, liquid paraffin, ligroine, kerosine, kerosene, n-decane, isododecane, tetraline, decalin, terepine oil, pine oil, adipic acid, gluconic acid, maleic acid, lactic acid, benzoic acid, phthalic acid, apple. Acids, fumaric acid, succinic acid, tartaric acid, citric acid, lauric acid, oleic acid, palm oil fatty acids, cyclohexanone, cyclohexenylcyclohexanone, acetylacetone, acetophenone, methylbutylketone, ethylene glycol, diethyleneglycol, triethyleneglycol, propylene Glycol, Dipropylene Glycol, Tripropylene Glycol, Epichlor Hydrin, Ethylene Glycol Diglycidyl Ether, Dioxane, Triethyl Phosphate, Tributyl Phosphate, Soybean Oil, Rapeseed Oil, Sesame Oil, Rice Oil, Palm Oil, Sunflower Oil, Iwashi Examples thereof include oil, whale oil, dimethylsulfoxide, N, N-dimethylacetamide, N-ethylpyrrolidone or N-methylpyrrolidone.

The colorant used in the water-floating granules of the present invention is not particularly limited as long as it is usually used for pesticides, and examples thereof include dyes, preferably Brilliant Blue FCF, Cyanine Green G or Elio. Green G. The blending ratio of the colorant used is usually 0.05 to 0.5% by weight in the granular water-floating granules with respect to the total amount of the granule composition, preferably 0.1. ~ 0.3% by weight.

The bulking agent used in the water-floating granules of the present invention includes, for example, talc, clay, amorphous silicon dioxide, diatomaceous soil, pearlite, calcium carbonate, magnesium carbonate and other mineral fine powders generally used as carriers of pesticides. Besides, resin powder such as vinyl chloride, chlorinated polyethylene and chlorinated polypropylene, sugar such as glucose, sugar and lactose, carboxymethyl cellulose or its salts, microcrystalline cellulose, wood flour, rice bran, bran, rice husk powder, coffee. Examples include organic substances such as bean powder, cellulose powder and licorice powder, water-soluble inorganic salts such as sodium sulfate, ammonium sulfate and potassium chloride, and urea. The blending amount of the bulking agent is the minimum necessary amount excluding the essential component of the water-floating granule of the present invention, and the blending ratio of the bulking agent varies depending on the type, but with respect to the total amount of the granule composition. It is usually 0.1 to 90% by weight, preferably 0.5 to 70% by weight, in the air-water-suspended granules.

The preservative used in the water-floating granules of the present invention is not particularly limited as long as it is usually used for pesticides, and is preferably sorbic acid, potassium sorbate, parachloromethoxylenol, and paraoxy. Butyl benzoate or sodium dehydroacetate. The blending ratio of the preservative used is usually 0.1 to 3% by weight in the herbicidal water-floating granules with respect to the total amount of the granule composition, and is preferably 0.2 to 3% by weight. 2% by weight.

The pH adjuster used in the floating granules of the present invention is not particularly limited as long as it is usually used for pesticides, and for example, inorganic acids such as phosphoric acid; citric acid, phthalic acid, and succinic acid. Organic acids such as; organic metal salts such as sodium citrate, potassium hydrogen phthalate; disodium hydrogen phosphate, sodium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, sodium carbonate, potassium carbonate, Inorganic metal salts such as sodium borate; hydroxides such as sodium hydroxide, potassium hydroxide; or organic amines such as triethanolamine, and the like, preferably inorganic acids, inorganic metals and the like. Salts or hydroxides, more preferably hydrochloric acid, citric acid, succinic acid, sodium hydroxide, potassium hydroxide, sodium carbonate and the like. Further, the pH adjuster used may be one kind or a combination of two or more kinds.

Next, the water-floating granules of the present invention and a method for producing the same will be described.
In order to produce the air-water floating granules of the present invention, when the pesticide active ingredient is a solid, the pesticide active ingredient is usually finely pulverized by a dry method or a wet method. Next, the obtained crushed product of the active ingredient of pesticide is mixed with starch, bentonite, buoyant material, surfactant and other auxiliaries, and then formed into granules by an extrusion granulation machine by a wet granulation method. To become.

The particle size of the water-floating granules of the present invention tends to sink in water if there are many parts finer than 0.6 mm, or the particles disintegrate too quickly, and conversely, if the particle size is larger than 5 mm, the wind In addition to being easily blown away, it takes time for the particles to disintegrate and disperse, and disintegrate and disperse at the place where the particles are blown, causing segregation of the active ingredient. Therefore, 90% or more of the granules are usually 0.710 mm to 4 It is necessary to enter the category of .760 mm.

The water-floating granules of the present invention thus obtained can be transferred directly into a paddy field from a box, bottle, bag, etc. with an appropriate transfer port, or packaged in a water-soluble film and ridged. It can be thrown from such as. Since the floating granules on the surface of the water of the present invention are designed to release the active pesticide ingredient while spreading on the surface of the water, the ridges do not need to be uniformly sprayed in the paddy field like general granules. Sufficient biological effects can be obtained by appropriately treating the paddy fields. The water-soluble film used in the present invention is a film or sheet having a property of dissolving or dispersing in water, and the constituent material thereof is, for example, polyvinyl alcohol or a derivative thereof, polyvinyl alcohol-based fiber. Examples thereof include those made of polyvinyl alcohol (for example, non-woven film), those made of purulan film, those made of sodium salt of carboxymethyl cellulose and cellulose, those made of polyethylene oxide and its derivatives, and the like, and in particular, films made of polyvinyl alcohol or its derivatives. (Hereinafter, abbreviated as PVA film) has the property of easily dispersing or dissolving in water and spreading the water-floating granules of the present invention on the water surface.

The PVA film used in the present invention is, for example, a film of polyvinyl alcohol having a degree of polymerization of 1000 to 2000 and a degree of saponification of 85 to 95% together with a small amount of a plasticizer, a stabilizer and the like. It also includes a film containing a small amount of a copolymer such as a carboxylic acid in the polymer. The thickness of the PVA film is usually 25 to 70 μm, preferably 30 to 50 μm, as a result of considering the film strength and the dissolution time. Further, it is convenient that the end portion of the PVA film can be heat-sealed.

Next, a method for controlling plant pests and weeds using the water-floating granule composition of the present invention and an application rate of the water-floating granule composition of the present invention will be described.

The planktonic granule composition of the present invention is effective against, for example, the following types of plant pests and weeds. Hereinafter, specific pests to be controlled by the present invention will be illustrated.

Examples of plant diseases include rice blast (Pyricularia oryzae), rhizoctonia serrata (Thanatephorus cucumeris), sesame leaf blight (Cochliobolus myabeanus), idiot seedling disease (Gibberella fusarium), and Fusarium spp. spp., Trichoderma spp., Rhizoctonia spp., Rhizoctonia solani, etc.), Clavips virens, Rhizoctonia spp. tritici), rust (Puccinia striiformis; Puccinia graminis, Puccinia recondita, Puccinia hordei), Madarahabyo (Pyrenophora graminea), net blotch (Pyrenophora teres), Fusarium head blight (Fusarium graminearum, Fusarium culmorum, Fusarium avenaceum, Microdochium nivale ), snow mold (Typhula incarnata, Typhula ishikariensis, Micronectriella nivalis), loose smut (Ustilago nuda, Ustilago tritici, Ustilago nigra, Ustilago avenae), fishy smell smut (Tilletia caries, Tilletia pancicii), Memonbyo (Pseudocercosporella herpotrichoides ), Rhizoctonia ceralis, Rhizoctonia salisis, Septria tritici, Leptosphaeria nodolum, Fusarium sp. Septria nodolum, Pyrenophora spp.), Gaeumanomyces graminis, Colletotrichum gramamicola, Ergot disease (Claviceps purpurea), spot disease (Cochliobolus sativus); Fusarium head blight (Fusarium graminearum, etc.), seedling blight (Fusarium avenaceum, Pencillium spp, Pythium sp. , Gymnosporangium spp, rust (Puccinia sorghi), sesame leaf blight (Cochliobolus heterostrophas), black rot (Ustilago maydis), charcoal rot (Cochliobolus) Viticola), rust (Phakoposora ampelopsis), Udonko disease (Uncinula necator), black rot (Elsinoe ampelina), late rot (Glomerella chingulata), black rot (Gynosporangium) Zygophila jamaicinsis, gray mold (Botrytis cinerea), bud blight (Diaporthe medusaea), purple rosellinia (Helicobasidium mompa), white rot (Rosellinia) cochliobolus (Rosellinia) ), Black rot (Venturia inaequalis), Spotted leaf disease (Alternaria alternata (Apple patternype)), Gymnosporangium yamadae, Monilia rot, Monilla lari Cochliobolus rotatum, Zygophila jamaicinsis, Gloodes pomigena, Black rot (Mycosphaerella pomi), Purple rosellinia, Helicosporangium Diseases (Phomopsis mari, Diaporthe tanakae), Black rot (Diplocarpon mari); Pear black rot (Alternaria alternata (Japanese perapathype), Gymnosporangium (Ven)), Gymnosporangium (Ven) haraeanum, Phytophthora piricola, Diaporthe medusaea, Diaporthe eres, Phytophthora pactorum; Peach scab, Phomopsis phopsis ), Phytophthora sp., Gloeosporium laeticolor; Glomerella chingulata, Phytophthora phytophthora, Phytophthora phytophthora, Phytophthora phytophthora, Phytophthora sp. ), Cercospora kaki; Mycosphaerella nawae, Phytophthora kakikora; Phytophthora phytophthora, Phytophthora phytophthora, phytophthora phytophthora, phytophthora phytophthora, phytophthora phytophthora ); Gray mold diseases such as tomatoes, cucumbers, beans, strawberries, potatoes, cabbage, eggplants, lettuce, etc. Sclerotiorum); phytophthora spp., Phytophthora spp., Phytophthora spp. Etc.); Phytophthora phytophthora cubensis, Phytophthora phytophthora phytophthora phytophthora phytophthora phytophthora phytophthora Phytophthora melonis, Phytophthora nicotianae, Phytophthora drechsleri, Phytophthora capsici, etc.); tomato early blight (Alternaria solani), leaf mold disease (Cladosporium fulvam), late blight (Phytophthora infestans), wilt (Fusarium oxysporum), root rot (Pythiu m myriotylum, Pythium dissotocum), anthracnose (Colletotrichum phomoides); eggplant powdery mildew (such as Sphaerotheca fuliginea), Susukabi disease (Mycovellosiella nattrassii), late blight (Phytophthora infestans), brown rot (Phytophthora capsici); Black rapeseed Alternaria brassicae, black spot disease of Abrana family vegetables (Alternaria brassicae, etc.), white spot disease (Cercosporella brassicae), root decay disease (Leptospheria maculans), root-knot disease (Phytophthora) Strain rot of cabbage (Rhizoctonia solani), yellowing disease (Fusalyum oxysporum); Rhizoctonia solani, yellowing disease (Verticillium dahlie); porri), white silk disease (Sclerotium lorfsii. Sclerotium lorfsii, white epidemic (Phytophthora porri); soybean purple spot disease (Cercospora kykuchii), black downy mildew (Elsinoe glycines), black spot disease (Diaporthe phytophthora) , Downy mildew (Peronospora mansurica), rust (Phytophthora pachyrhizi), phytophthora (Collettrichum truncatum) ,; Phytophthora pisi, downy mildew (Peronospora pisi); downy mildew (Peronospora viciae), plague (Phytophthora nicotianae); ), Phytophthora influenza, Silvery mildew (Spondylocladium atrovillens), Dry rot (Fusarium oxysporum, Fusarium solani), Powdered downy mildew (Spongospora subter) (Peronospora schachii), black root disease (Aphanomyces cochioides), downy mildew (Phoma bathae); carrot black leaf blight (Alternaria dauci); strawberry downy mildew (Phytophthora) (Gromella cinulata), fruit rot (Phythium ultimum Trow var. Ultimum); Cha's phytophthora (Exobasideium reticulatum), white downy mildew (Elsinoe leucosturi), charcoal downy mildew (Col) heasinensis, Pestalotiopsis longiseta; Alternaria alternata (Tobacco pasteotype), powdery mildew (Erysiphe sclerotinia), charcoal scab (Fusarium oxysporum); Sclerotinia sclerotiorum; Rose scab (Diplocarpon rosae),
Pythium (Sphaerotheca pannosa), plague (Phytophthora megasperma), sticky disease (Peronospora sparsa); brown spot disease of Kiku (Septria chrysanthemi-indici) Brown patch disease (Rhizoctonia solani), dollar spot disease (Sclerotinia homoeocarpa), curvularia geniculata, rust (Puccinia zoythia spulia), fungus (Puccinia zoythium) secalis), Gaeumanomyces graminis, Cochliobolus griminicola, Typhula incarnata, Black rotomyces granata, Typhula ishikari Bolealis), fairy rings (such as Marasmius oredes), Pythium disease (such as Pythium aphanidermatum), and the like, but are not limited thereto.

In addition, as pests, for example, C. elegans: ANGUINIDAE, Bentgrass nematode (Anguina agristici), Wheat nematode (Anguina tritici), Imogsale nematode (Ditylenchus destructor), etc. click nematode (Tylenchorhynchus martini), such as Ish click nematodes (Tylenchorhynchus sp.), as PRATYLENCHIDAE, Imamura burrowing nematode (Hirschmanniella imamuri), rice burrowing nematode (Hirschmanniella oryzae), South Negu Saleh nematode (Pratylenchus coffeae), Suzuran'negusare nematode (Pratylenchus convallariae), chrysanthemum Negu Saleh nematode (Pratylenchus fallax), tea Negu Saleh nematode (Pratylenchus loosi), wheat Negu Saleh nematode (Pratylenchus neglectus), Northern Negu Saleh nematode (Pratylenchus penntrans), Negu Saleh nematode (Pratylenchus sp.), etc., HOPLOLAMIDAE as, Nami spiral nematode (Helicotylenchus dihystera), Chara Sen nematode (Helicotylenchus erythrinae), spiral nematode (Helicotylenchus sp.), Jari nematodes (Hopolaimus sp.), fake bag nematode (Rotylenchulus reniformis), bra Cul uneven Sen nematodes (Ssutellonema brachyurum) As HETERODERIDAE, wheat cyst nematode (Bidera avenae), cactus cyst nematode (Cactodera ccti), fake cyst nematode (Cryphodera sp.), Potato cyst nematode (Globotera rostochiensis), nematode nematode, nematode nematode, nematode nematode. Soybean cyst nematode (heterodera glycines), clover cyst nematode (heterodera trifolii), etc., as MELOIDOGYNIDAE, Arena rear root-knot nematode (Meloidogyne arenaria), camellia root-knot nematode (Meloidogyne camelliae), grass root-knot nematode (Meloidogyne graminis), northern root-knot nematode (Meloidogyne hapla), sweet potato Nekobu nematode (Meloidogyne incognita), Nekobu nematode (Meloidogyne sp.). ), Etc. DORYLAIMIDA: As LONGIDORIDAE, C. elegans (Longidorus martini), C. , as TRICHODORIDAE, Yumihari nematodes, such as Acari (ACARINA) (Trichodorus sp.): as TARSONEMIDAE, Chanohokoridani (Polyphagotarsonemus latus), cyclamen dust mites (Steneotarsonemau pallidus), such as Microstegium vimineum dust mites (Tarsonemus waitei), as PYEMOTIDAE, Shiramidani (Pyemotes ventricosus ), etc., as EUPODIDAE, such as Mugidani (Penthaleus major), as TENUIPALPIDAE, grapes Hime spider mite (Brevipalpus lewisi), Chanohimehadani (Brevipalpus obovatus), pineapple Princess spider mite (Dolichotetranychus florodanus), such as Kakihimehadani (Tenuipalpus zhizhilashviliae), as TUCKERELLIDAE, Namikenagahadani ( Tuckerella pavoniformis), etc., as TETRANYCHIDAE, clover mites (Bryobia praetiosa), fake clover mites (Bryobia rubrioculus), Anzuhadani (Eotetranychus boreus), Michinokuhadani (Eotetranychus geniculatus), Kurihadani (Eotetranychus pruni), Kono white spider mites (Eotetranychus sexmanaculatus), Smith spider mite (Eottranychus smishi), walnut spider mite (Eottranychus uncatus), Sugino spider mite (Oligonychus hondoensis), Chibicob spider mite (Oligonychus illicis), Karamatsu spider mite (Oligonychus illicis) Nhadani (Panonychus citri), Ringohadani (Panonychus ulmi), carmine spider mite (Tetranychus cinnabarinus), kanzawai (Tetranychus kanzawai), two-spotted spider mite (Tetranychus urticae), such as cherry spider mites (Tetranychus viennensis), as ERIOPHIDAE, tea Roh Naga rust mite (Acaphylla theae), Tulip sabi mite (Aceria tulipae), Smokybrown cockroach (aculops pelekassi), Smokybrown cockroach (Aculus fockeui), Apple sabi mite (Aculus schlechtendali), German cockroach (Calacaris sabirit) Eriophyes chibaensis), etc., as ACARIDAE, Ashibutokonadani (Acarus siro), Mugikonadani (Aleuroglyphus ovatus), the bulb mite, Rhizoglyphus (Rhizoglyphus robini), such as Tyrophagus (Tyrophagus putrescentiae), Thysanura (THYSANURA): as LEPISMATIDAE, Yamatoshimi (Ctenolepisma villosa), silverfish (Lepisma saccharina), firebrat (Thermobia domestica), etc., orthoptera (orthoptera): as BLATTIDAE, American cockroach (Periplaneta americana), black cockroach (Periplaneta fuliginosa), such as Yamato cockroach (Periplaneta japonica), as BLATTELLIDAE, German cockroach (Blattella germanica ), German cockroach (Blattella lituricollis), etc., as TETTIGONIIDAE, Himekusakiri (Homorocoryphrus jezoensis), Kusakiri (Homorocoryphas lineosus), GRYLLOTALLP pa sp. ), Etc., as ACRIDDAE, thrips (Oxya hila intricata), thrips (Oxya yezoensis), etc. formosanus), etc., Thysanoptera (THYSANOPTERA): as THRIPIDAE, grasses thrips (Anaphothrips obscurus), thorns but-thrips (Chirothrips manicatus), tea Roh black thrips (Dendrothrips minowai), Hirazuhanaazamiuma (Frankliniella intonsa), lily flower thrips (Frankliniella lilivora) , Croton thrips (Heliothrips haemorrhoidalis), Cosmos thrips (Microcephalothrips abdominalis), soybean thrips (Mycterothrips glycines), mulberry thrips (Pseudodendrothrips mori), yellow tea thrips (Scirtothrips dorsalis), red obi thrips (Selenothrips rubrocinctus), rice thrips (Stenchaetothrips biformis ), Thrips thrips, Thrips alliorum, Thrips cororatus, Thrips flavas, Thrips thrips, Thrips thrips, Thrips thrips Thrips thrips (Frankliniella thrips), Thrips palmi Karny (Trips setosus), Thrips thrips (Trips thrips), Thrips palmi Karny (Trips thrips), Thrips palmi Karny (Trips thrips) lothrips aculeatus), Sina Kedah thrips (Haplothrips chinensis), Hana Kedah thrips (Haplothrips kurdjumovi), clover Kedah thrips (Haplothrips nigar), CHILLY tailed Kedah thrips ((Leeuwania pasanii), box Kedah thrips (Liothrips flordensis), Yuri Nokuda thrips ( Liothrips vaneeckei), Castanopsis Marc da thrips (Litotetothrips pasaniae), Kakikudaazamiuma (Ponticulothrips diospyrosi) etc., Hemiptera (Hemiptera): as PENTATOMIDAE, purple stink bug (Carpocoris purpureipennis), dolycoris baccarum (Dolycoris baccarum), Himenagame (Eurydema pulchrum) , longer (Eurydema rugosum), Mar Shirahoshi stink bug (Eysarcoris guttiger), giant thorns Shirahoshi bug (Eysarcoris lewisi), thorns Shirahoshi bug (Eysarcoris parvus), Shirahoshi stink bug (Eysarcoris ventralis), Tsuyaaokamemushi (Glaucias subpunctatus), red streaks stink bugs (Graphosoma rubrolineatum), brown marmorated stink bug (Halyomorpha mista), Inekamemushi (Lagynotomus elongatus), order Hemiptera (Nezara antennata), southern green stink bug (Nezara viridula), beet bug (Piezodorus hybneri), Plautia crossota green bug (Plautia stali), rice black bugs (Scotinopha la lurida),
Such as Iwasaki stink bug (Stariodes iwasakii), as COREIDAE, nightshade stink bug (Acanthocoris sordidus), giant spiders helicopter stink bug (Anacanthocoris striicornis), bombardier Hari bug (Cletus punctiger), Hime Hari stink bug (Cletus trigonus), giant helicopter stink bug (Molipteryx fulginosa) As ALYDIDAE, stink bug (Leptocorisa acata), stink bug (Leptocorisa chinensis), stink bug (Leptocorisa oratorius), stink bug (Leptocorisa oratorius), stink bug (Leptocorisa oratorius), stink bug ), Stink bugs (Liorhyssus hyalinus), etc., as LYGAEIDAE, stink bugs (Cavelerius saccharivorus), stink bugs (Macropes obnubilus) such as co-spring gourd Naga bug (Togo hemipterus), as PYRRHOCORIDAE, red-spotted stink bug (Dysdercus cingulatus), such as Princess red-spotted stink bug (Dysdercus poecilus), as TINGIDAE, Kikugunbai (Galeatus spinifrons), Yanagigunbai (Metasalis populi), Kusugunbai (Stephanitis fasciicarina) , Nashigunbai (Stephanitis sashi), Tsutsujigunbai (Stephanitis pyrioides), Himegunbai (Uhlerites debile), Kurumigunbai (Uhlerites latius), MIRIDAE, Higenagae (Apol ygus lucorum), blacktip reef shark Blue Kasumi turtle (Apolygus spinolai), red Hoshi Kasumi turtle (Creontiades pallidifer), tobacco Miridae (Cyrtopeltis tennuis), giant black Tobi Miridae (Ectometopterus micantulus), Black Kite Kasumi turtle (Halticiellus insularis), apple black Kasumi turtle (Heterocordylus flavipes) , Makiba Kasumi turtle (Lygus disponsi), Madara Miridae (Lygus saundersi), sugar beet Miridae (orthotylus flavosparsus), Mugikasumikame (Stenodema calcaratum), lid streaks Kasumi turtle (Stenotus binotatus), red streaks Kasumi turtle (Stenotus rubrovittatus), mouse Mont green Miridae ( Taylorilygus pallidulus), such as Trigonotylus caelestialium (Trigonotylus coelestialium), as CICADIDAE, such as the large brown cicada (Graptopsaltria nigrofuscata), as APHROPHORIDAE, Maekiawafuki (Aphrophora costalis), Matsuawafuki (Aphrophora flavipes), Budouawafuki (Aphrophora intermedia), Princess lid Ten Naga Awa butterbur (Clovia punctata), such as Hosoawafuki (Philaenus spumarius), as TETTIGELLIDAE, blacktip reef shark giant leafhopper (Bothrogonia japonica), such as Ooyokobai (Cicadella viridis), as CICADELLIDAE, oak leafhopper (Aguriahana quercus), Han Roh leafhopper (Alnetoidia alneti), Leafhopper leafhopper (Apheliona ferruginea), Leafhopper leafhopper (Arboridia apicaris), Green leafhopper (Edwardsiana leafhoppers), Leafhopper leafhopper (Edwardsia leafhopper) , Tea Roh green leafhopper (Empoasca onukii), rice Yellow leafhopper (Thaia subrufa), oranges Hime such as leafhoppers (Zyginella citri), as DELTOCEPHALIDAE, lid Ten leafhopper (Macrosteles fascifrons), green rice leafhopper (Nephotettix cincticeps), cross di leafhopper (Nephotettix nigropictus), Taiwan green rice leafhopper (Nephotettix virescens), apple spotted leafhopper (Orientus ishidai), Inazuma leafhopper (Recilia dorsalis), Mugiyokobai (Sorhoanus tritici), Han Roh Naga leafhopper (Speusotettix subfusculus), etc., as DELPHACIDAE, small brown planthopper (Laodelphax striatellus), brown planthopper (Nilaparvata lugens), sugar Roh Humpback planthopper (Numata muiri), corn planthopper (Peregrinus maidis), Crofts Roh planthoppers (Perkinsiella saccharicida), Sejirounka (Sogatella furcifera), such as Hieunka (Sogatella panicicola), as PSYLLIDAE, Kuwakijirami (Anomomeura mori) , Seguro Princess pheasant Rami (Calophya nigridorsalis), Diaphorina citri (Diaphorina citri), Yamaasakijirami (Mesohomotoma camphorae), Todokijirami (Psylla abieti), Han'nokijirami (Psylla alni), Yamatokijirami (Psylla jamatonica), Ringokijirami (Psylla mali), Kuroringo Psyllidae (Psyllidae marivorella), Psyllidae (Psyllidae pyrisuga), Psyllidae (Psyllidae), Psyllidae (Psyllidae), Psyllidae (Trioza camphorae), Psyllidae (Trioza camphorae), Psyllidae , Grape aphid (Aleurobus taonabae), tobacco aphid (Bemisia tabaci), mikan aphid (Dialeurodes citri), onsitsu kona aphid (Trialeurobus taonabae), onsitsu kona aphid (Trialeurobus taonabay) Aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid aphid Aphis farinose yanagicola), cotton aphid (Aphis gossypii), potato aphid (Aulacorthum solani), wheat straw chrysanthemum Omar aphid (Brachycaudus helichrysi), radish aphid (Brevicoryne brassicae), Tulip phylloxera (Dysaphis tulipae), birch cotton butterbur spotted aphid (Euceraphis punctipennis), Momoko butterbur aphid (Hyalopterus pruni), fake radish aphid (Lipaphis erysimi), chrysanthemum Princess aphid (Macrosiphoniella sanborni), tulip aphid (Macrosiphum euphorbiae), broad bean aphid (Megoura crassicauda), without Coffs key aphid (Melanaphis siphonella) , Ringo aphid (Myzus malisuctus), Umekobu aphid (Myzus mumecola), Momoka aphid (Myzus persicae), Negia bramushi (Neotoptera formosana), Ringo midria aphid (Otoxoptera formosana) ophum nymphaeae), wheat constricted aphid (Rhopalosophum padi), Oka Bono aphid (Rhopalosophum rufiabdominalis), no circle aphid (Sappaphis piri), pear aphid (Schizaphis piricola), wheat aphid (Sitobion akebiae), thorns aphid (Sitobion ibarae ), Scale insects (Toptera aurantii), Scale insects (Toptera citricidus), Momocob scale insects (Tubelocephalus momonis), Taiwan scale insects (Uroeucon forra) purchasi), etc., as PSEUDOCOCCIDAE, Matsumoto mealybugs (Crisicoccus matsumotoi), pine mealybug (Crisicoccus pini), without mealybugs (Dysmicoccus wistariae), mandarin orange mealybug (Planococcus citri), mealybug (Planococcus kranuhiae), Mikanhimekona scale insects (Pseudococcus citriculus), such as mulberry mealybugs (Pseudococcus comstocki), as COCCIDAE, Tsunoroumushi (Ceroplastes ceriferus), Rubiroumushi (Ceroplastes rubens), mandarin orange Hirata scale insects (Coccus discrepans), Hirata Kata scale insects (Coccus hesperidum), citrus Kata scale insects ( Coccus scale insects, scale insects (Ericerus pela), scale insects (Lecanium corni), scale insects (Lecanium scale insects), scale insects (Lecanium scale insects), scale insects (Pula) , Pulvinaria kuwacola, etc., as DIASPIDDIA, citrus scale insects (Andaspis scale insecta), red scale insects (Aonidiella aurantii),
Kimaru scale insects (Aonidiella citrina), Humpback Mar scale insects (Aspidiotus destructor), white circle scale insects (Aspidiotus hederae), red-spotted Marukai rise insects (Chrysomphalus ficus), no circle scale insects (Sanho Ze scale insects: Comstockaspis perniciosa), black Kata Mar scale insects (Duplaspidiotus scale insects, scale insects scale insects (Lepidosaphes scale insects), apple scale insects (Lepidosaphes ulmi), scale insects scale insects (Lepholeuca spis japonica), scale insect scale insects (Nacyclohoshikaigaramushi) (Parlatoria theae), Anthrenus black scale insects (Parlatoria ziziphi), Haran Naga scale insects (Pinnaspis aspidistrae), mandarin orange circles scale insects (Pseudaonidia duplex), living room Le scale insects (Pseudaonidia paeoniae), white peach scale (Pseudaulacaspis pentagona), plum white peach scale (Pseudaulacaspis prunicola), scale insects (Unaspis yanonensis), scale insects (LEPIDOPTERA): bats (Endoclyta excresences), Japanese scale insects (Endoclyta sinensis) Adoxophyes orana fasciata), smaller tea tortrix (Adoxophyes sp.), apple Mont moth (Archips breviplicanus), Mi someone summer fruit moth (Archips fuscocupreanus), Kakumonhamaki (Archips xylosteanus), Igusashinmushiga (Bactra furfurana), bombardier Baha'i Iroha Maki (Cnepha sia cinereipalpana), Kurimiga (Cydia kurokoi), chestnut green sink bur (Eucoenogenes aestuosa), oriental fruit moth (Grapholita molesta), Chahamaki (Homona magnanima), apple fruit moth (Hoshimoa adumbratana), soybean pod borer, Leguminivora glycinivorella (Leguminivora glycinivorella), Azukisayamushiga (Matsumuraeses azukivora) , Daizusayamushiga (Matsumuraeses falcana), beans Hime Saya insect moth (Matsumuraeses phaseoli), apples high Iroha Maki (Spilonota lechriaspis), apple white Hime moth (Spilonota ocellana), grapes bombardier moth (Eupoecillia ambiguella), Kuwaihosohamaki (Phalonidia mesotypa), Yomogioo Hosohamaki (Phtheochroides clandestina), Minoga (Bambalina sp. ), Oominoga (Eumeta japonica), Chaminoga (Eumeta minuscule), carvings (Nemapogon granellus), clothes moth (Tinea translucens), Nashichibiga (Bucculatrix pyricorella), Momohamoguriga (Lyonetia clerkella), Gin Mont leafminer (Lyonetia prunifoliella), Mamehosoga (Caloptilia soyella ), Chanohosoga (Caloptilia theivora), Ringohosoga (Caloptilia zachrysa), Kakihosoga (Cuphodes diospyrosella), the apple leaf miner (Phyllonorycter ringoniella), Nashihosoga (Spulerina astaurota), mandarin orange leafminer (Phyllocnistis citrella), grape leafminer (Phyllocnistis toparcha), Negikoga (Acrolepiopsis sapporensis ), yam Koga (Acrolepiopsis suzukiella), diamondback moth (Plutella xylostella), apple Hime sink Lee (Argyresthia conjugella), grapes Sukashiba (Paranthrene regalis), Kosukashiba (Synanthedon hector), Kakinohetamushiga (Stathmopoda masinissa), Imokibaga (Brachmia triannulella), peach fruit moth (Carposina niponensis), apple tortrix black bar (Illiberis pruni), Kuroshitaaoiraga (Lotoia sinica), monema flavescens (monema flavescens), Nashiiraga (Narosoideus flavidorsalis), Aoiraga (Parasa consocia), Himekuroiraga (Scopelodes contracus), rice stem borer (Chilo suppressalis), leaf roller (Cnaphalocosis medinalis), Momonogomadara nomeiga (Conogethes puncitiferalis), Watahelichronomeiga (Diaphania indica), Nashimadarameiga (Ec) tomyelois pyrivorella), streaks Kona moth (Ephestia kuehniella), white-position character moth (Etiella zinckenella), black lid Mont moth (Euzophera batangensis), Kuwanomeiga (Glyphodes pyloalis), high Madara Roh moth (Hellulla undalis), Inetatehamaki (Marasmia exigua ), legume pod borer (Maruca testulalis), Watanomeiga (Notarcha derogate), the European corn borer (Ostrinia furnacalis), Azukinomeiga (Ostrinia scapulalis), Fukinomeiga (Ostrinia zaguliaevi), Shibatsutoga (Parapediasia teterrella), Ukon'nomeiga (Pleuroptya ruralis), Sankameiga (Scirpophaga incertulas ), parnara guttata (Parnara guttata), Papilio Helenus (Papilio helenus), the common yellow swallowtail (Papilio machaon hippocrates), swallowtail (Papilio xuthus), Colias erate (Colias erate poliographus), cabbage butterfly (Pieris rapae crucivora), lampides boeticus (Lampides boeticus), plum Eda Shakti ( Angerona prunaria), mugwort Eda Shakti (Ascotis selenaria), Tobi Mont giant Eda Shakti (Biston robustum), Umeedashaku (Cystidia couaggaria), pine moth (Dendrolimus spectabilis), lackey moth (Malacosoma neustria testacea), Ringokareha (Odonestis pruni japonensis), Cephonodes Hylas (Cephonodes hylas), Acosmeryx castanea, Clostera anachoreta, Clostera anastomosis, Phalera flavescens Koh (Phalerodonta manleyi), killer whale pike moth (Stauropus fagi persimilis), Arna Pseudoconspersa (Euproctis pseudoconspersa), Monshirodokuga (Euproctis similes), tussock (Euproctis subflava), gypsy moth (Lymantria dispar), orgyia thyellina (Orgyia thyellina), the United States white Arctiidae (Hyphantria cunea), mulberry tiger moth (Spilosoma imparilis), honey Mont Kin looper (Acanthoplusia agnata), Nakajiroshitaba (Aedia leucomelas), black cutworm (Agrotis ipsilon), Kaburayaga (Agrotis segetum), Akakiriba (Anomis mesogona), Tamanagin'uwaba (Autographa nigrisigna), Trichoplusia ni (Trichoplusia ni), cotton bollworm (Helicoverpa armigera), tobacco budworm (Helicoverpa assulta), Heliothis maritima (Heliothis maritime), cabbage armyworm (Mamestra brassicae), Futaobikoyaga (Naranga aenescens), armyworm (Pseudaletia separata), Ineyotou (Sesamia inferens), Sujikiriyotou (Spodoptera depravata), beet armyworm (Spodoptera exigua), common cutworm (Spodoptera litura), Ringokenmon (Trianea intermedia), Nashikenmon (Viminia rumicis), such as Shiromon'yaga (Xestia c-nigrum), Coleoptera (COLEOPTERA): Chairokogane (Adoretus tenuimaculatus ), Spodoptera frugiperda (Anomala cuprea), Spodoptera frugiperda (Anomala rufocuprea), Spodoptera frugiperda (Eucetonia pilifera), Spodoptera frugiperda (Eucetonia roelofsi), Nagachako Nemushi (Mimela splendens), core Oh flower chafer (Oxycetonia jucunda), Japanese beetle (Popillia japonica), varied carpet beetle (Anthrenus verbasci), Hime beetle (Attagenus unicolor japonicus), cigarette beetle (Lasioderma serricorne), Hirata beetle (Lyctus brunneus), Guy Maideokisui (Carpophilus dimidiatus), clear Keshikisui (Carpophilus hemipterus), giant beetle, Epilachna vigintioctopunctata (Epilachna vigintioctomaculata), the beetle, Epilachna vigintioctopunctata (Epilachna vigintioctopunctata), Hime mealworm (Alphitobius laevigatus), mealworm (Neatus picipes), hime red flour beetle (Palorus ratzeburgii), co Anthrenus red flour beetle (Palorus subdepressus), Chai loco agate molitor (Tenebrio molitor), red flour beetle (Tribolium castaneum), Hirata red flour beetle (Tribolium confusum), beans beetle (Epicauta gorhami), key sawyer (Aeolesthes chrysothrix ),
Gomadarakamikiri (Anoplophora malasiaca), Japanese pine sawyer (Monochamus alternatus), Kiboshi beetle (Psacothea hilaris), grapes tiger beetle (Xylotrechus pyrrhoderus), Blue streaks Beetle (Xystrocena globosa), adzuki bean weevil (Callosobruchus chinensis), cucurbit leaf beetle (Aulacophara femoralis), brown Saruhamushi (Basilepta balyi), Kamenokohamushi (Cassida nebulosa), Ten site bi potato beetle (Chaetocnema concinna), Imosaruhamushi Colasposoma dauricum), A person who spotted neck Naga leaf beetle (Crioceris quatuordecimpunctata), Inenekuihamushi (Donacia provosti), Rurihamushi (Linaeidea aenea), Kiashinomihamushi (Luperomorpha tunebrosa), lid streaks Anthrenus beetle (Medythia nigrobilineata), Inedorooimushi (Oulema oryzae), Anthrenus key spring monkey beetle (Pagria signata), daikon leaf beetle (Phaedon brassicae), Kisujinomihamushi (Phyllotreta striolata), plum vest Li weevil (Involvulus cupreus ), peach vest Li weevil (Rhynchites heros), sweet potato weevil (Cylas formicarius), apple weevil (Anthonomus pomorum), die consulting weevil (Ceuthorhynchidius albosuturalis), chestnut weevil (Curculio sikkimenesis), rice weevil (Echinocnemus squameus), Imozoumushi (Euscepes postfasciatus), leaf beetle (Hypera weevil), alfalfa weevil (Hypera postica), leaf beetle (Lisstorhoptrus oryzophilus), leaf beetle (Listro) Gore-pea leaf weevil (Phyllobius armatus), Chibi pea leaf weevil (Sitona japonicus), co-maize weevil (Sitophilus oryzae), maize weevil (Sitophilus zeamais), such as grass reed weevil (Sphenophrus venatus vestitus), Hymenoptera (HYMENOPTERA): Nihon turnip sawfly (Athalia japonica) , Hymenoptera weevil (Atharia rose tuficornis), apple hymenoptera (Arge mari), dryocosmus kuriphilus, dryocosmus kuriphilus, etc., Hymenoptera (DIPTERA) ), Soybean weevil (Asphondylia sp. ), Melon fly (Dacus cucurbitae), oriental fruit fly (Dacus dorsalis), Mikanbae (Dacus tsuneonis), cherry Leaf Spot fruit fly (Rhacochlaena japonica), Inemigiwabae (Hydrellia griseola), rice click Kimi Giwa fly (Hydrellia sasakii), cherry fruit fly (Drosophila suzukii), Inekimoguribae Chlorops oryzae), Mugikimoguribae (Meromuza nigriventris), rice leafminer (Agromyza oryzae), the pea (Chromatomyia horticola), eggplant leafminer (Liriomyza bryoniae), green onion leafminer (Liriomyza chinensis), legume leafminer (Liriomyza trifolii), tomato leafminer (Liriomyza sativae ), reed Gros leafminer (Liriomyza huidobrensis), onion maggot (Delia antiqua), seedcorn maggot (Delia platura), sugar beet diving Hana fly (Pegomya cunicularia), housefly (Musca domestica), Kurokinbae (Phormia regina), mosquito (Culex pipiens pallens Coquillett) , Chikai-eka (Culex pipiens molestus Forskal), Agromyzidae (Anopheles sinensis Wiedemann), Hitosujishimaka (not limited to Aedes albopictus (Skuse)) and the like.

In addition, as weeds, various weeds that cause problems in paddy fields, such as rice weeds such as Tainubier; broad-leaved weeds such as Azena, Azetogarashi, Kikashigusa, Mizohakobe, Abnome, Himemisohagi, and Konagi; Weeds of the family Weeds such as Mizugayatsuri, Shizui, Kuroguwai; and Weeds of the family Omodaka such as Urikawa, Omodaka, and Heraomodaka, and various weeds that are problematic in non-agricultural lands, fields and orchards, such as Inuhouzuki and Chosenasagao. Nasal weeds, Aoi weeds such as Ichibi and American King deer, Hirugao weeds such as Malva asagao and Seiyou Hirugao, Hiyu weeds such as Inubiyu and Aogate, Kiku such as Onamomi, Butakusa, Noborogiku and Himejoon. Family weeds, Abranaceae weeds such as Karasina and Nazuna, Akaza weeds such as Shiroza and Akaza, Violet weeds such as field pansies, Nadesico weeds such as Hakobe, Shirotsumekusa, Kusanem and Ebisugusa. Weeds, Suberihiyu weeds such as Suberihiyu, Gomanohagusa weeds such as Oinunofuguri, Shiso weeds such as Hotokenoza, Todaigusa weeds such as Konishikisou, Inubie, Seibanmorokoshi, Mehishiba, Ohishiba, Suzumenokatabira , Rice weeds such as ryegrass, enokorogusa and gyogishiba, weeds of the lizard family such as kogomegayatsuri and kihamasuge, weeds of the family tsuyukusa such as tsuyukusa and marubatsukusa, and weeds of the family tokusa such as sugina. It is not something that will be done.

The application rate of the water-floating granule composition of the present invention can be appropriately selected depending on the target pests and weeds, and the application rate can be increased or decreased. As a result of considering the ease of throwing, the weight is usually 10 to 200 g, preferably 20 to 60 g, and the number of sachets is usually sufficient to drop 2 to 40 per 10 ares. It is possible to exert a biological effect, preferably 4 to 20 pieces.

Hereinafter, a formulation example of the water-floating granule composition of the present invention will be shown and specifically described, but the present invention is not limited thereto. In the following pharmaceutical example, "%" indicates mass%.

Trial production example 1
1670.25 parts of the bulk pyrazolate (purity 93.7%), 21.25 parts of NE-291PG ™ (dialkylsulfosuccinate salt manufactured by Nippon Emulsor) and 808.50 parts of tap water were mixed and attracted (attritor (trademark). Wet pulverized with a registered trademark) 1S type (manufactured by Mitsui Mining & Smelting Co., Ltd.) to obtain a pyrazolate premix slurry (agricultural chemical active ingredient amount 62.6%).

Trial production example 2
6-Chloro-3- (2-cyclopropyl-6-methylphenoxy) pyridazine-4-ylmorpholine-4-carboxylate drug substance (purity 98.0%) 1530.61 parts, NE-291PG ™ (trademark) 21.25 parts of dialkylsulfosuccinate salt made of emulsifier and 947.89 parts of tap water were mixed, wet-ground with Atletite (registered trademark) 1S type (manufactured by Mitsui Metal Mine), and 6-chloro-3-. (2-Cyclopropyl-6-methylphenoxy) pyridazine-4-ylmorpholine-4-carboxylate slurry (agricultural chemical active ingredient amount 60.0%) was obtained.

Example 1
35 parts of pyrazolate premix slurry of trial production example 1, 25 parts of cork (particle size 0.5 mm or less), 15 parts of bentonite, 3 parts of New Calgen (registered trademark) SX-C (manufactured by Takemoto Oil & Fat Co., Ltd.), cellogen 5A Eight parts (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and 12 parts of cornstarch were charged in a kneader and mixed, and then 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). The fluidized bed was dried in this fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Example 2
35 parts of pyrazolate premix slurry of trial production example 1, 25 parts of cork (particle size 0.5 mm or less), 15 parts of bentonite, 3 parts of New Calgen (registered trademark) SX-C (manufactured by Takemoto Oil & Fat Co., Ltd.), cellogen 5A 8 parts (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and 12 parts of potato starch were charged into a kneader and mixed, and then 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). This granulated product was dried in a fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Example 3
12 parts of 6-chloro-3- (2-cyclopropyl-6-methylphenoxy) pyridazine-4-ylmorpholine-4-carboxylate of Trial Production Example 2, 25 parts of cork (particle size 0.5 mm or less), bentonite 15 parts, New Calgen (registered trademark) SX-C (manufactured by Takemoto Oil & Fat Co., Ltd.) 3 parts, Cellogen 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 8 parts and 35 parts of corn starch are charged in a kneader and mixed, and then Toxanone (registered trademark). ) 5 parts of GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). This granulated product was dried in a fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Example 4-6
30 g of the granules obtained in Examples 1 to 3 was added to a water-soluble film made of polyvinyl alcohol (trade name: High Theron (registered trademark) C-200AX or High Theron (registered trademark) S-670 manufactured by Nippon Synthetic Chemical Industry Co., Ltd.). A pesticide package was obtained.

Comparative Example 1
35 parts of pyrazolate premix slurry of trial production example 1, 25 parts of cork (particle size 0.5 mm or less), 27 parts of bentonite, 8 parts of cellogen 5A (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and New Calgen (registered trademark) SX -C (manufactured by Takemoto Oil & Fat Co., Ltd.) was charged into a kneader and mixed, and then 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). This granulated product was dried in a fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Comparative Example 2
35 parts of pyrazolate premix slurry of trial production example 1, 25 parts of cork (particle size 0.5 mm or less), 15 parts of bentonite, cellogen (registered trademark) 5A (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 8 parts and new calgen ( 3 parts of SX-C (manufactured by Takemoto Oil & Fat Co., Ltd.) and 12 parts of pearlite are charged in a kneader and mixed, and then 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water are added and kneaded. did. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). This granulated product was dried in a fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Comparative Example 3
35 parts of pyrazolate premix slurry of trial production example 1, 25 parts of cork (particle size 0.5 mm or less), 15 parts of bentonite, cellogen (registered trademark) 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 8 parts and new calgen ( 3 parts of SX-C (manufactured by Takemoto Oil & Fat Co., Ltd.) and 12 parts of wood flour are charged in a kneader and mixed, and then 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water are added and kneaded. It fits. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). This granulated product was dried in a fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Comparative Example 4
35 parts of pyrazolate premix slurry and 25 parts of cork (particle size 0.5 mm or less) of trial production example 1, cellogen (registered trademark) 5A (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 8 parts and New Calgen (registered trademark) SX -C (manufactured by Takemoto Oil & Fat Co., Ltd.) and 27 parts of cornstarch were charged into a kneader and mixed, and then 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Kasei Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated from a 1.5 mm screen by an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). This granulated product was dried in a fluidized bed dryer (hot air temperature 60 ° C.) for about 15 minutes, and the 1.5 to 5 mm sections were sieved to obtain granules.

Test Example 1 Formability of Granules The formability of the granules of Examples 1 to 3 and Comparative Examples 1 to 4 at the time of extruded granulation was visually judged and judged as follows.
◯: Good formability of grains, no half-chip grains are observed Δ: Insufficient formability of grains, half-chip grains are scattered ×: Cannot be molded as grains

Test Example 2 Disintegration and dispersion of floating granules 2 g of the granules produced in Examples 1 to 3 and Comparative Examples 1 to 4 were poured from the upper part of a glass beaker containing 1 L of tap water to check the disintegration and dispersion status of the granules. It was visually determined as follows.
◯: Good dispersity and uniform dispersion is formed Δ: No uniform dispersion is formed due to poor disintegration of grains ×: The grains do not disintegrate or even if they disintegrate, they do not disperse and settle.

Test Example 3 Stability of the active ingredient over time The granules produced in Examples 1 to 3 and Comparative Examples 1 to 4 were sealed in an aluminum laminated bag and stored in a constant temperature machine at 54 ° C. for 14 days. The content of pyrazolate in the granular water-floating granules before and after aging was quantified by liquid chromatography, and the change over time was evaluated. The result was calculated from the residual rate of pyrazolate after aging (the following formula). The quality of the stability of the active ingredient was judged according to the following criteria.
◯: Residual rate of active ingredient 96.0% or more Δ: Residual rate of active ingredient 93.0% to 95.9%
×: Residual rate of active ingredient 92.9% or less Residual rate (%) = [(Amount of pesticide active ingredient after storage) / (Amount of pesticide active ingredient before storage)] × 100

The results of tests 1 to 3 are shown in Table 1.

As is clear from the test examples, the water-floating granules according to the present invention have difficulty in achieving the moldability of the granules, the disintegration dispersibility of the granules, and the stability of the pesticide active ingredient, which have been difficult to achieve with the formulations using the known techniques mentioned as comparative examples. At the same time, it was possible to achieve the formation of water-suspended granules with high practicality.

The water-floating granules of the present invention are excellent in manufacturability, good diffusivity of the active ingredient at the time of application, and excellent stability over time, and thus are useful formulations as agricultural materials.

Test Example 3 Stability of the active ingredient over time The granules produced in Examples 1 to 3 and Comparative Examples 1 to 4 were sealed in an aluminum laminated bag and stored in a constant temperature machine at 54 ° C. for 14 days. The content of the active ingredient of the granular water-floating granules before and after aging was quantified by liquid chromatography, and the change over time was evaluated. The result was calculated from the residual rate of the active ingredient after aging (the following formula). The quality of the stability of the active ingredient was judged according to the following criteria.
◯: Residual rate of active ingredient 96.0% or more Δ: Residual rate of active ingredient 93.0% to 95.9%
×: Residual rate of active ingredient 92.9% or less Residual rate (%) = [(Amount of pesticide active ingredient after storage) / (Amount of pesticide active ingredient before storage)] × 100

Claims (10)

A water-floating granule composition containing starch, bentonite, buoyancy material, surfactant, pesticide active ingredient and water. The water-floating granule composition according to claim 1, wherein the starch is at least one selected from the group consisting of cornstarch, potato starch and tapioca starch. The water-floating granule composition according to claim 1, wherein the starch is cornstarch. The water-floating granule composition according to any one of claims 1 to 3, wherein the buoyancy material is at least one selected from the group consisting of calcined vermiculite, foamed shirasu, foamed pearlite, cork and foamed styrene. The water-floating granule composition according to any one of claims 1 to 4, wherein the pesticide active ingredient is a herbicide active ingredient. 13. Water-floating granule composition. (A) A step of mixing starch, bentonite, a buoyant material, a surfactant, an active pesticide ingredient and water, and if necessary, other auxiliary agent components to perform wet granulation, and (b) the granules obtained in the above step. The method for producing a water-suspended granule composition according to any one of claims 1 to 6, which comprises a step of drying, crushing and sieving. A method for applying a water-floating granule composition according to any one of claims 1 to 7, wherein the water-floating granule composition is directly sprayed on a paddy field. A method for applying a water-floating granule composition according to any one of claims 1 to 7, wherein the water-floating granule composition is encapsulated in a water-soluble film and directly sprayed on a paddy field. A pesticide preparation comprising encapsulating the water-floating granule composition according to any one of claims 1 to 7 in a water-soluble film.