JP7283902B2 - Water floating granule composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water-floating granule composition obtained by extrusion containing starch, bentonite, a buoyancy agent, a surfactant, an agricultural chemical active ingredient and water, and a method of using the same.

As general pesticide formulations, powders, granules, wettable powders, aqueous solutions, flowable formulations, liquid formulations, emulsion formulations, and the like are known. Of these, spraying agents such as wettable powders, water solutions, and emulsions are mainly used in upland fields and non-agricultural lands. There is a problem of environmental impact, and emulsions have a problem of environmental pollution due to solvents and emulsifiers, a problem of fire hazard due to organic solvents, and the like. In addition, many of the active ingredients of agricultural chemicals are poorly soluble in water, and it is often difficult to formulate them into liquid formulations. For these reasons, there is a recent tendency to increase the use of aqueous or oily suspension formulations (flowables) or dry flowables, which have less of these problems.

On the other hand, examples of water-surface application agents for paddy fields include powders, granules, and the like, and granules have been mainly used in the past. Granules are generally applied at 3 to 4 kg per 10 ares, but in recent years, there has been a growing demand for labor-saving spraying of agricultural chemicals, and development of small-volume spraying agents that reduce the application amount of agricultural chemical formulations is required. However, an attempt to reduce the application amount of the granules inevitably increases the content of the agricultural chemical active ingredient in the granules and also reduces the number of grains per unit area. These are factors that directly affect the biological effects of agricultural chemical active ingredients and the phytotoxicity of crops, and it is required that agricultural chemical formulations be treated uniformly over the entire paddy field as much as possible. However, in order to evenly spray 1kg granules, which have been developed in recent years, in flooded sewage fields, a certain amount of skill and experience is required, and depending on the situation, a spraying device is required. It cannot be said that the intended dosage form is necessarily satisfactory.

Therefore, in the field of water surface application agents for paddy fields, many developments of aqueous suspension formulations are seen for the purpose of saving labor and improving efficiency during spraying. Unlike aqueous suspension formulations used in upland fields and non-agricultural lands, this formulation is directly dripped or poured from a container into the paddy field without diluting the formulation, so it does not require special spraying equipment and can be processed. The amount is small, about 200 ml to 1 liter per 10 ares, so it is light and easy to handle. treatment (so-called mizuguchi treatment) is possible, and because it is a formulation that can be treated with extremely labor-saving treatment, the market has expanded rapidly after its release. However, since the aqueous suspension formulation is a formulation in which an agricultural chemical active ingredient is dispersed or emulsified in water, it has a problem that it is difficult to apply an agricultural chemical active ingredient which is easily hydrolyzed.

In recent years, as a formulation considering the labor saving of pesticide spraying and the environment, solid formulations such as tablets, bean-type formulations, granules, etc. are packed in water-soluble paper such as water-soluble film, and formulations for throwing into paddy fields (packs or jumbo formulations) ) are becoming more prevalent. Although such formulations have the advantage of being easy to process agricultural chemicals for paddy fields, unlike conventional granules and powders, they are not processed uniformly. It settles on the soil surface, where the sediment foams or does not foam, so that the agricultural chemical active ingredient is dispersed in the surface water, so the undissolved active ingredient particles settle around the dropping point, In addition, the dissolved pesticidal active ingredient forms a high-concentration solution near the surface of the soil at the point of application, and is easily adsorbed by the soil. For this reason, even if the water solubility of the active agricultural chemical ingredient in the formulation for throwing into the paddy field, which is a solid formulation wrapped in water-soluble paper such as a water-soluble film, is quite high, the active ingredient will not be present in the soil near the injection point of the formulation. Due to the adsorption at a high concentration, depending on the field conditions, weather conditions, etc., there was a drawback that it was easy to cause phytotoxicity, uneven efficacy, and adverse effects on subsequent crops due to non-uniformity of the active ingredient of the agricultural chemical.

As such granules, many effervescent tablets have been developed in the past, but the use of non-effervescent granules has become mainstream due to problems in manufacturability and storage stability. For example, a composition in which a formulation containing an agricultural chemical active ingredient and baked vermiculite or foamed perlite, foamed shirasu, cork and an acetylenic surfactant is wrapped in a water-soluble film (Patent No. 2815535; Patent Document 1), an agricultural chemical active ingredient and Granules or tablets in which a powder base having a specific gravity of 1 or less and a surfactant having a large interfacial tension lowering ability are uniformly dispersed (JP-A-7-233002; Patent Document 2); In addition, a surfactant having a large interfacial tension lowering ability, an agricultural chemical formulation coated with an oily substance (Japanese Patent Laid-Open No. 9-183701; Patent Document 3), one or more agricultural chemical active ingredients, α-olefin sulfonate, etc. An agricultural chemical formulation containing a surfactant and grain nuclei having an apparent specific gravity of less than 1 (Japanese Patent Laid-Open No. 2000-239103; Patent Document 4) has been disclosed as a technique for improving the spreadability of water-floating granules.

Patent No. 2815535 Japanese Patent Laid-Open No. 7-233002 Japanese Patent Laid-Open No. 9-183701 JP 2000-239103

On the other hand, water-floating granules contain adjuvant components with different specific gravities, such as active ingredients of agricultural chemicals, spreaders, buoyancy agents, and binders. be done. From this, (1) the moldability of the agricultural chemical composition during extrusion granulation is good, (2) the physical and chemical properties of the obtained agricultural chemical formulation are good, and (3) the active ingredient of the agricultural chemical is stable. Selection of a bulking agent that does not adversely affect sexuality is a problem in formulation design, but no technique for solving these problems at the same time has been disclosed so far.

The object of the present inventors is to find a water-floating granule containing an agricultural chemical active ingredient and a buoyancy agent, which has good moldability during extrusion, good physical properties of the formulation, and good storage stability of the agricultural chemical active ingredient. As a result of intensive studies, surprisingly, it was found that the agrochemical composition contains starch, bentonite, a buoyancy agent, a surfactant, an agrochemical active ingredient and water, and is a water-floating granule obtained by extrusion molding. The composition is capable of obtaining water-floating granules which are favorable in terms of moldability during extrusion granulation, chemical stability of agricultural chemical active ingredients, and physicochemical stability of formulations. and completed the present invention.
That is, the present invention is as follows [1]-[11].
[1] A water-floating granule composition containing starch, bentonite, a buoyancy agent, a surfactant, an agricultural chemical active ingredient, and water.
[2] The water-floating granular composition according to [1], wherein the starch is at least one selected from the group consisting of corn starch, potato starch and tapioca starch.
[3] The water-floating granular composition according to [1], wherein the starch is cornstarch.
[4] The water-floating granules according to any one of [1] to [3], wherein the buoyant material is at least one selected from the group consisting of baked vermiculite, foamed shirasu, foamed perlite, cork and expanded polystyrene. Composition.
[5] The water-floating granule composition according to any one of [1] to [4], wherein the agricultural chemical active ingredient is a herbicidal active ingredient.
[6] Any one of [1] to [5], wherein the pesticidal active ingredient is (A1) a bleaching herbicidal compound or a salt thereof and/or (A2) an acetolactate synthase-inhibiting herbicidal compound or a salt thereof. 3. The water-floating granular composition according to .
[7] (a) a step of mixing starch, bentonite, a buoyancy agent, a surfactant, an agricultural chemical active ingredient, water, and optionally other auxiliary ingredients, and wet granulating; The method for producing the water-floating granular composition according to any one of [1] to [6], comprising the steps of drying, pulverizing and sieving the obtained granules.
[8] A method for applying a water-floating granule composition, which comprises directly spraying the water-floating granule composition according to any one of [1] to [7] onto paddy fields.
[9] A water-floating granule composition characterized by encapsulating the water-floating granule composition according to any one of [1] to [7] in a water-soluble film and directly spraying it on paddy fields. Application method.
[10] An agricultural chemical formulation characterized by enclosing the water-floating granular composition according to any one of [1] to [7] in a water-soluble film.

According to the present invention, a water-floating granule composition obtained by extrusion containing starch, bentonite, a buoyancy agent, a surfactant, an active ingredient for an agricultural chemical, and water is It is possible to obtain water-floating granules which are excellent in terms of chemical stability of the agricultural chemical active ingredient as well as physicochemical stability of the formulation.

Next, various terms used in this specification will be explained.
The content of the pesticidal active ingredient in the water-floating granules of the present invention is not particularly limited as long as it is an amount that allows formulation, but is usually 0.1 to 50% per 100 weight of the composition of the present invention. parts by weight, more preferably 1 to 40 parts by weight.
The agrochemical active ingredient contained in the water-floating granules of the present invention is a herbicidal active ingredient, an insecticidal active ingredient, a fungicidal active ingredient, an acaricidal active ingredient, a plant regulator ingredient, or a mixture thereof, and is a granule composition. There are no particular restrictions on the physical properties of the ingredients themselves, but herbicidal active ingredients are preferred as long as they are stable in the environment.

The herbicidal active ingredient contained in the water-floating granules of the present invention is not particularly limited, but is preferably a bleaching herbicidal compound or its salt and/or an acetolactate synthase-inhibiting herbicidal compound or its salt.

Albinating herbicidal compounds are well known herbicides that bleach and kill weeds. As bleaching herbicidal compounds, for example, pyrazole herbicidal compounds and triketone herbicidal compounds are widely known.

Examples of pyrazole herbicidal compounds include pyrazolate, pyrazoxifene, and benzofenap, and examples of triketone herbicidal compounds include mesotrione, sulcotrione, benzobicyclone, tefuryltrione, and bicyclopyrone.

Acetolactate synthase (ALS)-inhibiting herbicidal compounds are well-known herbicidal compounds that kill weeds by inhibiting the synthesis of the essential amino acids valine, leucine and isoleucine by inhibiting ALS. As ALS-inhibiting herbicidal compounds, for example, sulfonylurea herbicidal compounds, pyrimidinylsalicylic acid herbicidal compounds and triazolopyrimidine herbicidal compounds are widely known.

Sulfonylurea herbicidal compounds include, for example, azimsulfuron, bensulfuron-methyl, cyclosulfuron-methyl, halosulfuron-methyl, ethoxysulfuron, imazosulfuron, pyrazosulfuron-ethyl, chlorimuron-ethyl, cinosulfuron, metsulfuron-methyl, and flucetosulfuron. , propyrisulfuron, metazosulfuron, and the like.

Pyrimidinylsalicylic herbicidal compounds include, for example, bispyribac, pyribenzoxime, pyriftalid, pyriminobacmethyl, pyrimisulphane, triafamone and the like.

Examples of triazolopyrimidine herbicidal compounds include penoxsulam.

The insecticidal active ingredient contained in the water-floating granules of the present invention is not particularly limited, but examples include indoxacarb, chromafenozide, pyrimidifen, milbemectin, methomyl, acephate, dinotefuran, thiocyclam, imidacloprid, nitenpyram, acetamiprid, clothianidin, Thiamethoxam, thiacloprid, pyridafenthion, dimethoate, PMP, CVMP, dimethylvinphos, DEP, NAC, MTMC, MIPC, PHC, MPMC, XMC, benfuracarb, pirimicarb, oxamyl, thiodicarb, cypermethrin, cartap, bensultap, diflubenzuron, teflubenzuron, chlor fluazuron, buprofezin, hexythiazox, fenbutatin oxide, pyridaben, clofentezine, bacillus thuringiensis and the toxins they produce, MPP, MEP, diazinon, isoxathion, ethylthiometone, etofenprox, tralomethrin, silafluofen, cycloprothrin, benfuracarb, brofuranilide and the like.

The fungicidal active ingredient contained in the water-floating granules of the present invention is not particularly limited, but examples include simeconazole, hydroxyisoxazole, tecloftalam, diclomedine, penthiopyrad, pyroquilone, ziram, thiuram, captan, TPN, fthalide, and trichloride. Phosmethyl, fosetyl, thiophanate-methyl, benomyl, carventazole, thiabentazole, diethofencarb, iprodione, vinclozoline, procymidone, fluorimide, oxycarboxin, mepronil, flutolanil, penciclon, metalaxyl, oxadixyl, triadimefon, hexaconazole, trifoline, blast Saidin S, kasugamycin, polyoxin, validamycin A, PCNB, dazomet, triazine, probenazole, isoprothiolane, tricyclazole, tetraconazole, triclamide, oxolinic acid, dimethomorph, cymoxanil, tolprocarb, MON-240 and the like.

The plant regulator contained in the water-floating granules of the present invention is not particularly limited, but examples include maleic hydrazide and its salts, abscisic acid, calcium peroxide, inabenfide, paclobutrazole, uniconazole, tripentenol, Psychocell and the like.

As further agrochemical active ingredients optionally used in the present invention, one or more of the above herbicides, insecticides, fungicides, acaricides, plant regulators and the like can be used. .

Various plant-derived starches can be used as the starch used in the present invention. For example, starch made from tapioca, potato or corn can be used, and corn starch made from corn is particularly preferred. The starch used in the present invention can be of any form, but solid starch is preferred. 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.

The bentonite used in the present invention can be bentonite produced from various production areas. Bentonite is a general term for clays containing montmorillonite as a main component, and is composed of layered aluminum phyllosilicate and is classified according to the type of cations contained such as sodium and calcium. The bentonite used in the present invention is Bentonites of various cationic species can be used, but sodium bentonite is particularly preferred. 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 buoyant material used in the present invention is not particularly limited as long as it is a granular material that floats on water. Examples include hollow mineral carriers such as calcined vermiculite, foamed shirasu, and foamed perlite; Granules such as synthetic resin foams such as expanded polystyrene, and buoyant materials containing one or more of these and molded with the property of floating on water, preferably calcined vermiculite, foamed perlite 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.

Surfactants used in the present invention are not particularly limited as long as they are commonly used in agricultural chemicals, and include anionic surfactants, nonionic surfactants, cationic surfactants or zwitterionic surfactants. Any surfactant such as an active agent can be used, and one or more of these can be used.

Examples of anionic surfactants include alkyl phosphates, alkyl sulfates, polyoxyalkylene alkyl ether phosphates, polyoxyethylene alkyl ether sulfates, alkylaryl phosphates, and alkylaryl sulfates. , polyoxyalkylene alkylaryl ether phosphate, polyoxyalkylene alkyl aryl ether sulfate, alkylphenol phosphate, alkylphenol phosphate, alkylphenol sulfate, alkylphenol sulfate, polyoxyalkylenealkylphenol phosphate, polyoxyalkylenealkylphenol Phosphate ester salt, polyoxyalkylenealkylphenol sulfate, polyoxyalkylenealkylphenol sulfate, styrylphenol phosphate, styrylphenol phosphate, styrylphenol sulfate, styrylphenol sulfate, polyoxyalkylenestyrylphenol phosphate, poly Oxyalkylenestyrylphenol phosphate, polyoxyalkylenestyrylphenol sulfate, polyoxyalkylenestyrylphenol sulfate, distyrylphenol phosphate, distyrylphenol phosphate, distyrylphenol sulfate, distyrylphenol sulfate , polyoxyalkylene distyrylphenol phosphate, polyoxyalkylene distyrylphenol phosphate, polyoxyalkylene distyrylphenol sulfate, polyoxyalkylene distyrylphenol sulfate, tristyrylphenol phosphate, tristyrylphenol phosphate salt, tristyrylphenol sulfate, tristyrylphenol sulfate, polyoxyalkylene tristyrylphenol phosphate, polyoxyalkylene tristyrylphenol phosphate, polyoxyalkylene tristyrylphenol sulfate, polyoxyalkylene tristyrylphenol sulfate ester salts, alkyl succinate sulfonates, dialkyl succinate sulfonates, polyoxyalkylene dialkyl succinate sulfonates, etc., preferably alkyl phosphate salts, polyoxyalkylene alkyl ether phosphate ester salts, alkyl Aryl Phosphate, Polyoxyalkylene Alkyl Aryl Ether Phosphate, Alkylphenol Phosphate, Styrylphenol Phosphate, Polyoxyalkylene Styrylphenol Phosphate, Distyrylphenol Phosphate, Distyrylphenol Phosphate, Polyoxyalkyl di-styrylphenol phosphate, polyoxyalkylene distyrylphenol phosphate, tristyrylphenol phosphate, tristyrylphenol phosphate, polyoxyalkylene tristyrylphenol phosphate, polyoxyalkylene tristyrylphenol phosphate, and the like. be done.

Examples of nonionic surfactants include fatty alcohol alkylene oxide adducts, polyalkyleneoxy fatty acid esters, sorbitan surfactants or their alkylene oxide adducts, polyglycerin fatty acid esters, alkyl polysaccharide surfactants, Sucroglyceride, polyoxyalkylene alkyl ether, polyoxyethylene alkyl ether, polyoxyalkylene alkyl aryl ether, polyoxyalkylene alkyl phenol ether, polyoxyalkylene styrylphenol ether, polyoxyalkylene distyrylphenol ether or polyoxyalkylene tristyrylphenol ethers, etc., preferably polyoxyalkylene alkyl ethers, polyoxyethylene alkyl ethers, polyoxyalkylene alkyl aryl ethers, polyoxyalkylene alkylphenol ethers, polyoxyalkylene styrylphenol ethers, polyoxyalkylene distyrylphenol ethers or and polyoxyalkylene tristyrylphenol ether.

These ethylene oxide-added surfactants may partially contain propylene oxide.

Examples of cationic surfactants include aliphatic tertiary amines or salts thereof, aliphatic tertiary amine-aliphatic amine alkylene oxide adducts or salts thereof, and aliphatic quaternary amine salts.

Amphoteric surfactants include, for example, amino acid-type amphoteric surfactants such as sodium laurylaminopropionate; Examples include amphoteric surfactants; sulfate type amphoteric surfactants; sulfonate type amphoteric surfactants; and phosphate type amphoteric surfactants.

Surfactants used in one embodiment of the water-floating granules used in the present invention are preferably anionic surfactants or nonionic surfactants.

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

The oil-absorbing carrier used in the present invention is not particularly limited as long as it is commonly used in agricultural chemicals. and preferably vegetable powder, perlite or amorphous silicon dioxide. The blending ratio of the oil-absorbing carrier in the water-floating granules of the present invention is generally preferably 0.1 to 30% by weight, more preferably 1 to 10% by weight, based on the total amount of the granule composition. Compounding is preferred.

The surface-floating granules of the present invention can be blended with other adjuvants for various purposes. As other adjuvants, for example, adjuvant components such as binders, antifoaming agents, antifungal agents, solvents or stabilizers, that is, coloring agents, extenders, preservatives and pH adjusters can be added. .

Binders used in the water-floating granules of the present invention include, for example, dextrin, polyvinyl alcohol, polyvinylpyrrolidone, salts of carboxymethylcellulose, methylcellulose, gum arabic, polyethylene glycol or derivatives thereof, tab powder, ligninsulfonate, Examples include carboxylic acid or sulfonic acid type polysoaps. Among these, lignin sulfonate or carboxylic acid or sulfonic acid type polysoap can also be used as a dispersant and is suitable.

The antifoaming agent used in the water-floating granules of the present invention is not particularly limited as long as it is usually used in agricultural chemical formulations. Alcohol-based antifoaming agents; amyl alcohol, diisobutyl carbitol, tributyl phosphate, oleic acid, tall oil, metal soap, surfactants with low HLB (e.g., sorbitan laurate monoester, sorbitan laurate triester, polyethylene glycol fatty acid esters, acetylene glycol derivatives, Pluronic nonionic surfactants, etc.), organic polar compound antifoaming agents such as acetylene glycol derivatives; mineral oil surfactant formulations, mineral oil and fatty acid metal salt surfactant formulations mineral oil-based defoaming agents such as products; silicone resin-based defoaming agents such as silicone resins, silicone resin surfactant formulations, and silicone resin inorganic powder formulations.

The antifungal agent used in the water-floating granules of the present invention is not particularly limited as long as it is commonly used in agricultural chemical formulations. Examples include parachlorometaxylenol, polyhexamethylenebiguanidide hydrochloride, 1,2-benzisothiazolin-3-one, methyl parahydroxybenzoate, ethyl parahydroxybenzoate, propyl parahydroxybenzoate, butyl parahydroxybenzoate, heptyl parahydroxybenzoate, benzyl parahydroxybenzoate, parahydroxybenzoic acid ester, sorbic acid, orthophenylphenol, sodium orthophenylphenate, glutardialdehyde, quaternary ammonium compounds, tri-(N-chlorohexyldiazeniumdioxy)-aluminum, tetrahydro-3,5-dimethyl-2H-1,3, 5-thiadiazine-2-thione, 2,5-dimethoxytetrahydrofuran, dimethylol urea, sodium N-methyldithiocarbamate, phenoxyethanol, glyoxal, glutaraldehyde, 1,3,5-tris(2-hydroxyethyl)-1,3, 5-hexahydrotriazine, benzalkonium chloride, phenoxypropanol, tetramethylacetylenediurea, povidone iodin, potassium sorbate, 2-bromo-2-nitropropane-1,3-diol, thiazolone, and the like.

The solvent used for the water-floating granules of the present invention is not particularly limited as long as it is commonly used for agricultural chemicals, but it is desirable to have a flash point of second petroleum or higher. For example, alkylbenzene, methylnaphthalene, liquid paraffin, ligroin, kerosene, kerosene, n-decane, isododecane, tetralin, decalin, turpentine oil, pine oil, adipic acid, gluconic acid, maleic acid, lactic acid, benzoic acid, phthalic acid, apple Acid, fumaric acid, succinic acid, tartaric acid, citric acid, lauric acid, oleic acid, coconut oil fatty acid, cyclohexanone, cyclohexenylcyclohexanone, acetylacetone, acetophenone, methylbutyl ketone, ethylene glycol, diethylene glycol, triethylene glycol, propylene Glycol, dipropylene glycol, tripropylene glycol, epichlorohydrin, ethylene glycol diglycidyl ether, dioxane, triethyl phosphate, tributyl phosphate, soybean oil, rapeseed oil, sesame oil, rice oil, coconut oil, sunflower oil, sardine oil, whale oil, dimethylsulfoxide, N,N-dimethylacetamide, N-ethylpyrrolidone or N-methylpyrrolidone, and the like.

The coloring agent used in the water-floating granules of the present invention is not particularly limited as long as it is commonly used in agricultural chemicals. Green G. The mixing ratio of the coloring agent used is usually 0.05 to 0.5% by weight, preferably 0.1%, in the granular water-floating granules with respect to the total amount of the granule composition. ~0.3% by weight.

Bulking agents used in the water-floating granules of the present invention include, for example, talc, clay, amorphous silicon dioxide, diatomaceous earth, perlite, calcium carbonate, magnesium carbonate, and other mineral fine powders generally used as carriers for agricultural chemicals. In addition, resin powder such as vinyl chloride, chlorinated polyethylene, chlorinated polypropylene, sugars such as glucose, sugar, lactose, carboxymethyl cellulose or its salts, microcrystalline cellulose, wood flour, rice bran, wheat 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 components of the water-floating granules of the present invention. It is usually 0.1 to 90% by weight, preferably 0.5 to 70% by weight, in the water-floating granules.

The preservative used in the water-floating granules of the present invention is not particularly limited as long as it is commonly used in agricultural chemicals. butyl benzoate or sodium dehydroacetate. The proportion of the preservative used in the herbicidal water-floating granules is generally 0.1 to 3% by weight, preferably 0.2 to 3% by weight, based on the total amount of the granule composition. 2% by weight.

The pH adjuster used in the water-floating granules of the present invention is not particularly limited as long as it is commonly used in agricultural chemicals. Examples include inorganic acids such as phosphoric acid; citric acid, phthalic acid and succinic acid; organic acids such as sodium citrate, organic metal salts such as 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 and potassium hydroxide; or organic amines such as triethanolamine; salts or hydroxides, more preferably hydrochloric acid, citric acid, succinic acid, sodium hydroxide, potassium hydroxide or sodium carbonate. In addition, the pH adjusters used can be used singly or in combination of two or more.

Next, the water-floating granules of the present invention and the method for producing the same will be described.
In order to produce the water-floating granules of the present invention, when the agricultural chemical active ingredient is solid, the agricultural chemical active ingredient is usually finely pulverized by a dry or wet method. Next, the pulverized product of the pesticidal active ingredient thus obtained is mixed with starch, bentonite, a buoyancy agent, a surfactant and other auxiliaries, and then formed into granules by an extrusion granulator using a wet granulation method. become

Regarding the particle size of the water-floating granules of the present invention, if there are many parts finer than 0.6 mm, they tend to sink in water or disintegrate too quickly. In addition, it takes time to disintegrate and disperse the granules, and it causes segregation of the active ingredient by disintegrating and dispersing at the place where it is blown. It should fall in the .760mm category.

The thus-obtained water-floating granules of the present invention are placed directly into paddy fields from a box, bottle, bag, or the like fitted with an appropriate inlet, or are divided into water-soluble films and placed on the ridges. It is possible to process throwing from etc. The water-floating granules of the present invention are designed to release the active ingredients of agricultural chemicals while spreading on the surface of the water. For this reason, it is possible to obtain a sufficient biological effect by appropriately treating it in 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 its constituent materials include, for example, those made of polyvinyl alcohol or derivatives thereof, and polyvinyl alcohol-based fibers. (e.g., non-woven fabric), pullulan film, carboxymethyl cellulose sodium salt and cellulose, polyethylene oxide and derivatives thereof, and particularly films made of polyvinyl alcohol or derivatives thereof. (hereinafter abbreviated as PVA film) itself easily disperses or dissolves in water and has the property of spreading the surface-floating granules of the present invention on the surface of water.

The PVA film used in the present invention is, for example, a film made 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 plasticizer, stabilizer, etc. Also included are films containing a small amount of copolymers such as carboxylic acids in the polymer. The thickness of the PVA film is usually 25-70 μm, preferably 30-50 μm, considering film strength and dissolution time. Also, the ends of the PVA film are advantageously heat-sealable.

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

The water-floating granular composition of the present invention is effective against, for example, the following types of plant pests and weeds. Specific pests to be controlled by the present invention are exemplified below.

Examples of plant diseases include Pyricularia oryzae, Thanatephorus cucumeris, Cochliobolus miyabeanus, Gibberella fujikuroi, Pythium spp. and Fusari. um spp., Trichoderma spp., Rhizopus spp., Rhizoctonia solani, etc.), rice mildew (Claviceps virens), smut (Tilletia barleyana); f.sp. tritici), rust (Puccinia striiformis; Puccinia graminis, Puccinia recondita, Puccinia hordei), leaf spot (Pyrenophora graminea), net spot (Pyrenophora teres), Fusarium head blight graminearum, Fusarium culmorum, Fusarium avenaceum, Microdocium nivale ), Snow rot (Typhula incarnata, Typhula ishikariensis, Micronectriella nivalis), Naked smut (Ustilago nuda, Ustilago tritici, Ustilago nigra, Ustilago avenae), Forage smut (T illetia caries, Tilletia pancicii), eye spot (Pseudocercospoorella herpotrichoides ), Rhizoctonia cerealis, Rhynchosporium secalis, Septoria tritici, Leptosphaeria nodorum, Fusarium spp., Pythium spp., Rhi zoctonia spp., Septoria nodorum, Pyrenophora spp.), wilt (Gaeumannomyces graminis), anthrax (Colletotrichum gramaminicola), ergot (Claviceps purpurea), leaf spot (Cochliobolus sativus) Fusarium head blight of corn (such as Fusarium graminearum), nursery Blight (Fusarium avenaceum, Penicillium spp, Pythium spp. , Rhizoctonia spp), rust (Puccinia sorghi), leaf blight (Cochliobolus heterostrophus), smut (Ustilago maydis), anthracnose (Colletotrichum gramaminicola), northern spot (Cochliobolus car bonum); downy mildew of grapes (Plasmopora) viticola), rust (Phakopsora ampelopsidis), powdery mildew (Uncinula necator), black rot (Elsinoe ampelina), late rot (Glomerella cingulata), black rot (Guignardia bidwellii), bush rot (Pomo psi viticola), Zygophila jamaicensis, Botrytis cinerea, Diaporthe medusaea, Helicobasidium mompa, Rosellinia necatrix; powdery mildew of apples (Podosp) haera leucotricha ), Venturia inaequalis, Alternaria alternata (Apple pathotype), Gymnosporangium yamadae, Monillia mali, Valsa ceratosperma, Ring spot disease (Botryosphaeria berengeriana), Anthracnose (Colletotrichum acutatum), soot spot (Zygophila jamaicensis), soot spot (Gloeodes pomigena), black spot (Mycosphaerella pomi), purple feather (Helicobasidium mompa), white spotted feathers disease (Rosellinia necatrix), blight disease (Phomopsis mali, Diaporthe tanakae), brown spot (Diplocarpon mali); gium haraeanum), ring blight ( Physalospora piricola, Diaporthe medusaea, Diaporthe eres, Phytophthora cactorum; Peach scab (Cladosporium carpophilum), Phomopsis sp. ), Phytophthora sp., Gloeosporium laeticolor; Glomerella cingulata, Monilinia kusanoi, Monilinia fructicola; (Gloeosporium kaki ), Cercospora kaki; Mycosphaerella nawae, Powdery mildew (Phyllactinia kakikora); Citrus black spot (Diaporthe citri), Green mold (Penicillium digitatum), Penicillium ital icum), scab (Elsinoe fawcettii) ); Botrytis cinerea of tomatoes, cucumbers, beans, strawberries, potatoes, cabbage, eggplants, lettuce, etc.; Sclerotinia sclerotiorum); seedling damping off of various vegetables such as tomato, cucumber, beans, radish, watermelon, eggplant, rapeseed, green pepper, spinach, sugar beet (Rhizoctonia spp., Pythium spp., Fusarium spp., Phythophthora spp., Sclerotin ia sclerotiorum etc.); gourd downy mildew (Pseudoperonospora cubensis), powdery mildew (Sphaerotheca fuliginea), anthracnose (Colletotrichum lagenarium), vine wilt (Mycosphaerella melonis), vine rot (Fusarium ox pysporum), Phytophthora parasitica, Phytophthora melonis, Phytophthora nicotianae, Phytophthora drechsleri, Phytophthora capsici, etc.); ytophthora infestans), wilt (Fusarium oxysporum), root rot (Pythium myriotylum, Pythium dissotocum), anthracnose (Colletotrichum pomoides); a infestans), brown rot (Phytophthora capsici); oilseed rape black spot disease (Alternaria brassicae), cruciferous vegetable black spot (Alternaria brassicae, etc.), white spot (Cercosporella brassicae), root rot (Leptospheria maculans), clubroot (Plasmodiophora brassicae), downy mildew disease (Peronospora brassicae); Cabbage stock rot (Rhizoctonia solani), chlorosis (Fusarium oxysporum); Chinese cabbage bottom rot (Rhizoctonia solani), yellow spot (Verticillium dahlie); Leek rust (Puccinia allii), black spot (Alternaria porri) ), white silk disease (Sclerotium rolfsii. Sclerotium rolfsii, Phytophthora porri; Cercospora kikuchii, Elsinoe glycinnes, Diaporthe phaseolum, Rhizoctonia solani), stem blight (Phytophthora megasperma) , downy mildew (Peronospora manshurica), rust (Phakopsora pachyrhizi), anthracnose (Colletotrichum truncatum); bean anthracnose (Colletotrichum lindemuthianum); aerella personatum), brown spot (Cercospora arachidicola) pea powdery mildew (Erysiphe pisi), downy mildew (Peronospora pisi); broad bean downy mildew (Peronospora viciae), late blight (Phytophthora nicotianae); potato summer blight (Alternaria solani), black bruise (Rhizoctonia); solani Phytophthora infestans, Spondylocladium atrovirens, Fusarium oxysporum, Fusarium solani, Spongospora subterranea; pora beticola), downy mildew (Peronospora schachtii), Aphanomyces cochioides, Phoma batae; Black leaf blight of carrots (Alternaria dauci); Powdery mildew of strawberries (Sphaerotheca humuli), Phytophthora nico tianae), anthracnose (Gromerella cingulata), fruit rot (Pythium ultimum Trow var. ultimum); sis), Pestalotiopsis longiseta; Tobacco Alternaria alternata (Tobacco pathotype), powdery mildew (Erysiphe cichoracearum), anthracnose (Colletotrichum tabacum), late blight (Phytophthora parasitica); moxysporum); sclerotinia of sunflower (Sclerotinia) sclerotiorum); rose scab (Diplocarpon rosae),
powdery mildew (Sphaerotheca pannosa), late blight (Phytophthora megasperma), downy mildew (Peronospora sparsa); hytophthora cactorum); brown patch disease (Rhizoctonia solani), dollar spot disease (Sclerotinia homoeocarpa), curvularia geniculata, rust disease (Puccinia zoysiae), helmintsporium leaf blight (Cochliobolus sp.), cloud form (Rhy nchosporium secalis), wilt disease (Gaeumannomyces graminis), anthracnose (Colletotrichum graminicola), snow rot brown small sclerotinia (Typula incarnata), snow rot black small sclerotinia (Typula ishikariensis), snow rot large sclerotinia (Sclero) tinia borealis), fairy rings (such as Marasmius orreades), Pythium (such as Pythium aphanidermatum), and the like, but are not limited thereto.

In addition, as pests, for example, Anguinea: ANGUINIDAE, such as Anguina agristis, Anguina tritici, Ditylenchus destructor, etc., TYLENCHORYNCHIDAE, Tylenchorh ynchus claytoni), Martiniss Such as Tylenchorhynchus martini, Tylenchorhynchus sp. Nematode nematode (Prtylenchus coffaeae), Lily of the valley Negusare Nematode (Pratylenchus convallariae), Chrysanthemum nematode (Pratylenchus fallax), Chanegusare nematode (Pratylenchus loosi), Wheat nematode (Pratylenchus neglectus), Kitanegusare nematode (Pratylenchus pen) ntrans), Pratylenchus sp., etc., HOPLOLAMIDAE As, Namira nematode (Helicotylenchus dihystera), Chara nematode (Helicotylenchus erythrinae), Helicotylenchus sp. ormis), Ssutellonema brachyurum Such as HETERODERIDAE, wheat cyst nematode (Bidera avenae), cactusist nematode (Cactodera cacti), false cyst nematode (Cryphodera sp.), potato cyst nematode (Globodera rostochiensis), rice cyst nematode (heterodera elachista), soybean cyst nematode ( heterodera glycines), clover cyst nematode (heterodera trifolii), etc., as MELOIDOGYNIDAE, arena root nematode (Meloidogyne arenaria), Meloidogyne camelliae, Meloidogyne camelliae, Meloidogyne root nematode (Melo idogyne graminis), Meloidogyne hapla, Meloidogyne incognita ), Meloidogyne sp. ), etc. DORYLAIMIDA: LONGIDORIDAE includes Longidorus martini, Longidorus sp., Xiphinema americanum, Xiphinema sp. .) etc. , as TRICHODORIDAE, such as Trichodorus sp., Acarina: as TARSONEMIDAE, Polyphagotarsonemus latus, Steneotarsonemau pallidus, Tarsonem Pyemotes ventricosus as PYEMOTIDAE, such as Pyemotes ventricosus ), such as EUPODIDAE, such as Penthaleus major, TENUIPALPIDAE, Brevipalpus lewisi, Brevipalpus obovatus, Dolichotetranychus florodanus, Tenu ipalpus zhizhilashviliae), etc., as TUCKERELLIDAE; Tuckerella pavoniformis), such as TETRANYCHIDAE, Bryobia praetiosa, Bryobia rubrioculus, Eotetranychus boreus, Eotetranychus geniculat us), chestnut spider mite (Eotetranychus pruni), white spider mite (Eotetranychus sexmanaculatus), Eotetranychus smithi, Eotetranychus uncatus, Oligonychus hondoensis, Oligonychus ilicis, Oligonychus karamatus, Panonychus citri ), apple spider mite (Panonychus ulmi), locust spider mite (Tetranychus cinnabarinus) , Tetranychus kanzawai, Tetranychus urticae, Tetranychus viennensis, etc., as ERIOPHIDAE, Acaphylla theae, Aceria tulipae , Aculops pelekassi, Aculus fockeui ), Aculus schlechtendali, Calacarus carinatus, Calepitrimerus vitis, Epitrimerus pyri, Eriophyes chibaensis, etc., as ACARIDAE Acarus siro, Aleuroglyphus ovatus ), Rhizoglyphus robini, Tyrophagus putrescentiae, etc. THYSANURA: As LEPISMATIDAE, Ctenolepisma villosa, Lepisma saccharina, spotted stain ( Orthoptera, such as Thermobia domestica : As BLATTIDAE, American cockroach (Periplaneta americana), Black cockroach (Periplaneta fuliginosa), Yamato cockroach (Periplaneta japonica), etc., as BLATTELLIDAE, German cockroach (Blattella germanica), German cockroach (B Lattella lituricollis), as TETTIGONIIDAE, Homorocoryphus jezoensis , Homorocoryphus lineosus, etc., as GRYLLOTALPIDAE, moth crickets (Gryllotalpa sp. ), etc., as ACRIDIDAE, Oxya hyla intricata, Oxya yezoensis, etc. Termites (ISOPTERA): Cryptotermes domesticus, Coptotermes formosanus, Reticuli termes formosanus), Formosan termites (Odontotermes Thrips (THYSANOPTERA): THRIPIDAE such as Anaphothrips obscurus, Chirothrips manicatus, Dendrothrips minowai, Black thrips ( Frankliniella intonsa), Black Thrips (Frankliniella lilivora) , Croton thrips (Heliothrips haemorrhoidalis), Cosmos thrips (Microcephalothrips abdominalis), Soybean thrips (Mycterothrips glycines), Mulberry thrips (Pseudodendrothrips mori), Tea thrips (Sc irtothrips dorsalis), Red-billed thrips (Selenothrips rubrocinctus), Rice thrips (Stenchaetothrips biformis) ), Thrips alliorum, Thrips coloratus, Thrips flavas, Thrips hawaiiensis, Thrips nigropilosus, Yellow thistle Horse (Thrips palmi), mandarin orange Yellow thrips (Frankliniella occidentalis), Soybean thrips (Thrips setosus), Gladiolus thrips (Thrips simplex), Thrips tabaci, etc., as PHLAEOTHRIPIDAE, rice thrips (Haplothri) ps aculeatus), Synax thrips (Haplothrips chinensis), Haplothrips kurdjumovi, Haplotrips nigar, Leeuwania pasanii, Liothrips flordensis, Liothrips vaneeckei), thrips (Litotetothrips pasaniae) , Ponticulothrips diospyrosi, etc. Hemiptera (HEMIPTERA): as PENTATOMIDAE, Carpocoris purpureipennis, Dolycoris baccarum, Eurydema p ulchrum), long-tailed bug (Eurydema rugosum), Marsilla stink bug (Eysarcoris guttiger), Eysarcoris lewisi, Eysarcoris parvus, Eysarcoris ventralis, Glaucias subpunctatus, Graph soma rubrolineatum), brown marmorated stink bug (Halyomorpha mista), rice stink bug ( Lagynotomus elongatus), Nezara antennata, Nezara viridula, Piezodorus hybneri, Plautia stali, Scotinop hara lurida),
Stink bug (Stariodes iwasakii), etc., as COREIDAE, Physalis stink bug (Acanthocoris sordidus), Giant leaf stink bug (Anacanthocoris striicornis), Beef stink bug (Cletus punctiger), Lesser stink bug (Cletus trigonus) ), Molipteryx fulginosa such as ALYDIDAE, such as Leptocorisa acuta, Leptocorisa chinensis, Leptocorisa oratorius, RhopalidAE, RHOPALIDAE Aeschynteles maculatus ), Liorhyssus hyalinus, etc., LYGAEIDAE, Cavelerius saccharivorus, Macropes obnubilus, Pachybrachius luridus, black reed stink bug (Paromius exguus), PYRRHOCORIDAE such as Togo hemipterus, Dysdercus cingulatus, Dysdercus poecilus, etc., TINGIDAE such as Galeatus spinifrons, willow Mmbai (Metasalis populi), Kusugumbai (Stephanitis fasciicarina) , Stephanitis sashi, Stephanitis pyrioides, Uhlerites devile, Uhlerites latius, etc., as MIRIDAE, Adelphocoris lineolatus, Spotted beard Black mist turtle (Adelphocoris triannulatus) (Apolygus lucorum), Black-tailed Turtle (Apolygus spinolai), Red-throated Turtle (Creontiades pallidifer), Tobacco Turtle (Cyrtopeltis tennuis), Black-spotted Turtle (Ectometopterus micantulus), Black-spotted Turtle ( Halticiellus insularis), Apple black turtle (Heterocordylus flavipes) ), Lygus disponsi, Lygus saundersi, orthotylus flavosparsus, Stenodema calcaratum, Stenotus binotatus (Stenotus rubrovittatus) (Taylorilygus pallidulus), Trigonotylus coelestialium, etc., as CICADIDAE, such as Graptopsaltria nigrofuscata, as APHROPHORIDAE, Aphrophora costalis, Aphrophora flavipes, Aphrophora intermedia, Aphrophora intermedia Clovia punctata, Philaenus spumarius, etc., as TETTIGELLIDAE, Bothrogonia japonica, Cicadella viridis, etc., CICADELLIDAE, Ag uriahana quercus), leafhopper (Alnetoidia alneti) , Apheliona ferruginea, Arboridia apicaris, Edwardsiana flavescens, Edwardsiana rosae, Empoasca ab ietis), Green leafhopper (Empoasca onukii) , rice leafhopper (Thaia subrufa), orange leafhopper (Zyginella citri), etc., as DELTOCEPPHALIDAE, macrosteles fascifrons, blackfin leafhopper (Nephotettix cincticeps), black leafhopper (Nephotettips) (Nephotettix nigropictus), Leafhopper (Nephotettix virescens) , Orientus ishidai, Recilia dorsalis, Sorhoanus tritici, Speusotettix subfusculus, etc. riatellus), brown planthopper (Nilaparvata lugens), sugar plant planthopper (Numata muiri), corn planthopper (Peregrinus maidis), black planthopper (Perkinsiella saccharicida), green planthopper (Sogatella furcifera), barn planthopper (Sogatella panicicola), etc., as PSYLLIDAE ( Anomomeura mori), Black-backed lice (Calophya nigridorsalis), Ciphorina citri, Mesohomotoma camphorae, Psylla abieti, Psylla alni, Psylla jamatonica, Psy lla mali), Psylla malivorella, Psylla pyrisuga), Psylla tobirae, Trioza camphorae, Trioza quercicola, etc., as ALEYRODIDAE, Aleurocanthus spiniferus, Grape cona louse (Aleurolobus taonabae), tobacco whitefly (Bemisia tabaci) , citrus whitefly (Dialeurodes citri), whitefly (Trialeurodes vaporariorum), silver leaf whitefly, etc., as PHYLLOXERIDAE, grape aphid (Viteus vitifolii), etc., as PEMPHIGIDAE, Aphidonuguis mali), apple boll (Eriosoma lanigerum), sugarcane Aphididae such as Geoica lucifuga, Acyrthosiphon pisum, Aphis citricola, Aphis craccivora, Aphis farinose yan agicola), cotton aphid (Aphis gossypii), potato beetle Aphids (Aulacorthum solani), wheatgrass aphids (Brachycaudus helichrysi), radish aphids (Brevicoryne brassicae), tulip aphids (Dysaphis tulipae), Tectonic aphids (Euceraphis pu) nctipennis), peach aphid (Hyalopterus pruni), pseudoradish aphid (Lipaphis erysimi), Macrosiphoniella sanborni, Macrosiphum euphorbiae, Megoura crassicaud, Melan aphis siphonella), apple aphid (Myzus malisuctus), plum aphid (Myzus mumecola), green peach aphid (Myzus persicae), green peach aphid (Myzus persicae), onion aphid (Neotoxoptera formosana), apple green aphid (Ovatus malicolens), husky aphid (Rhopalosophum nymphaeae), wheat neck aphid (Rhopa losophum padi), red aphid (Rhopalosophum rufiabdominalis) , Sappaphis piri, Schizaphis piricola, Sitobion akebiae, Sitobion ibarae, Toxoptera aurantii, mandarin orange Black Aphid (Toxoptera citricidus), Momokobu Aphids (Tuberocephalus momonis), Formosan aphids (Uroeucon formosanum), etc., as MARGARODIDAE, Drosicha corpulenta, Iselya purchasi, etc., as PSEUDOCOCCIDAE , Crisicoccus matsumotoi, Crisicoccus pini), Dysmicoccus wistariae, Planococcus citri, Planococcus kranuhiae, Pseudococcus citriculus, mulberry mealybug such as Pseudococcus comstocki, as COCCIDAE, Ceroplastes ceriferus), ruby beetle (Ceroplastes rubens), mandarin orange scale beetle (Coccus discrepans), flatback scale beetle (Coccus hesperidum), citrus scale beetle (Coccus pseudomagnoliarum), privet Caterpillar (Ericerus pela), dogwood scale beetle (Lecanium corni), chanokata Lecanium persicae, Pulvinaria aurantii, Pulvinaria citricola, Pulvinaria kuwacola, etc. Andaspis kashicola), red scale beetle (Aonidiella aurantii),
Aonidiella citrina, Aspidiotus destructor, Aspidiotus hederae, Chrysophalus ficus, San Jose scale: Comsto ckaspis perniciosa), Duplaspidiotus claviger), Lepidosaphes beckii, Lepidosaphes ulmi, Lepholeucaspis japonica, Parlatoreopsis pyri, Camellia Black-spotted scale (Parlatoria camelliae), Chinese black-spotted scale (Parratoria theae), scaly beetles (Parlatoria ziziphi), pinnaspis aspidistrae, orange scales (Pseudaonidia duplex), chanomaru scales (Pseudaonidia paeoniae), mulberry White scale (Pseudaulacaspis pentagona), white scale (Pseudaulacaspis Lepidoptera: Endoclyta excrecens, Endoclyta sinensis, Palpifer sexnotata, Acleris comariana), Apple Cokakumon Hamaki ( Adoxophyes orana fasciata), Adoxophyes sp., Archips breviplicanus, Archips fuscocupreanus, Archips xylosteanus, rush beetle Moth (Bactra furfurana), Cnephasia cinereipalpana ), Cydia kurokoi, Eucoenogenes aestuosa, Grapholita molesta, Homona magnanima, Hoshimoa adumbratana, Leg uminivora glycinivorella), Matsumuraeses azukivora, soybean seed moth (Matsumuraeses falcana), Matsumuraeses phaseoli, Spilonota lechriaspis, Spilonota ocellana, Eupoecillia ambiguella, Quaiho Sohamaki (Phalonidia mesotypea), Mugwort (Phtheochroides clandestina), Minnowa (Bambalina sp. ), Eumeta japonica, Eumeta minuscule, Nemapogon granellus, Tinea translucens, Bucculatrix pyricorella, Lyonetia cler kella), Lyonetia prunifoliella, Caloptilia soyella ), Caloptilia theivora, Caloptilia zachrysa, Cuphodes diospyrosella, Phyllonorycter ringoniella, Spulerina astaurota ), Phyllocnistis citrella, Phyllocnistis toparcha, Acrolepiopsis sapporensis ), Acrolepiopsis suzukiella, Plutella xylostella, Argyrestia conjugella, Paranthrene regalis, Synanthedon hector, Kakinohetamu Shiga (Stathmopoda masinissa), Imokibuga (Brachmia triannulella), Peach moth (Carposina niponensis), Illiberis pruni, Lotoia sinica, Monema flavescens, Narosoideus flavidorsalis, Parasa consoci a), Scopelodes contracus, Chilo suppressalis, Clumpworm (Cnaphalocrocis medinalis), peach moth (Conogethes punctiferalis), cotton-chopworm moth (Diaphania indica), pear moth (Ectomyelois pyrivorella), striped moth (Ephestia kuehniella) , Etiella zinckenella, Crof Euzophera batangensis, Glyphodes pyroalis, Hella undalis, Marasmia exigua, Maruca testularis, Notarcha derogate), corn borer (Ostrinia furnacalis), adzuki bean borer (Ostrinia scapulalis), Fukinomiga (Ostrinia zaguliaevi), Shibatuga (Parapediasia teterrella), Turmeric moth (Pleuroptya ruralis), Sankameigaga (Scirpophaga incertulas), Ichimonjiseri (Parnara gut tata), Papilio helenus, Papilio machaon hippocrates, Papilio xuthus), Colias erate poliographus, Pieris rapae crucivora, Lampides boeticus, Angelona prunaria, Ascotis selenaria, Black-winged Shark (Biston robustum), Cystidia couaggaria), Dendrolimus spectabilis, Malacosoma neustria testacea, Odonestis pruni japonensis, Cephonodes hylas, Acosm eryx castanea), Clostera anachoreta, Clostera anastomosis , Phalera flavescens, Phalerodonta manleyi, Stauropus fagi persimilis, Euproctis pseudoconspersa, Euproctis sim iles), Euproctis subflava, Lymantria dispar, Orgyia thyellana, Hyphantria cunea, Spilosoma imparilis, Acanthoplusia agnata, Aedia leucomelas, A grotis ipsilon), Agrotis segetum, Anomis mesogona, Autographa nigrisigna, Trichoplusia ni, Helicoverpa armigera, Helicoverpa assulta, Heliothis maritime, Mamestra brassicae, Naranga aenescens, Armyworm (Pseudaletia separata), Rice armyworm (Sesamia inferens), Spodoptera depravata (Spodoptera depravata), Spodoptera exigua, Spodoptera litura, Ringworm (Trian) ea intermedia), Viminia rumicis, Xestia c-nigrum, etc. , Coleoptera: Adoretus tenuimaculatus, Anomala cuprea, Anomala rufocuprea, Eucetonia pilifera, Eucetonia ro elofsi), Heptophylla picea, Melontha japonica , Scarab beetle (Mimela splendens), Oxycetonia jucunda (Oxycetonia jucunda), Japanese beetle (Popillia japonica), Himemarukatsuobushimushi (Anthrenus verbasci), Attagenus unicolor japonicus , tobacco beetle (Lasioderma serricorne), flat beetle (Lyctus brunneus), Carpophilus dimidiatus, Carpophilus hemipterus, Epilachna vigintioctomaculata, Epilachna vigintioctopuncta , Mealworm (Alphitobius laevigatus), Mealworm (Neatus picipes), Stardust Palorus ratzeburgii, Palorus subdepressus, Tenebrio molitor, Tribolium castaneum, Tribolium confusu m), bean tiger beetle (Epicauta gorhami), yellow longhorn beetle (Aeolesthes chrysothrix),
Anoplophora malasiaca, Monochamus alternatus, Psacothea hilaris, Xylotrechus pyrrhoderus, Xystrocena globosa, Azu weevil (Callosobruchus chinensis), cucumber beetle (Aulacophara femoralis), brown beetle Sulph beetle (Basilepta balyi), Turtle beetle (Cassida nebulosa), Tensite beetle (Chaetocnema concina), Potato beetle Colasposoma dauricum), Crioceris quatuordecimpun cta), rice leaf beetle (Donacia provosti), bob beetle (Linaeidea aenea), Luperomorpha tunebrosa, Medythia nigrobilineata, Oulema oryzae, Pagria signata, Phaedon brassicae, Phaedon brassicae Shi (Phyllotreta striolata), Prunus vulgaris (Involvulus cupreus) ), peach weevil (Rhynchites heros), ant weevil (Cylas formicarius), apple flower weevil (Anthonomus pomorum), radish weevil (Ceuthorhynchidius albosuturalis), chestnut weevil (Curculio sikk imenesis), rice weevil (Echinocnemus squameus), caterpillar (Euscepes postfasciatus), clover weevil (Hypera nigrirostris), alfalfa weevil (Hypera postica), rice water weevil (Lissorhoptrus oryzophilus), palm weevil (Listroderes costirostris), apple weevil (Phyl lobis armatus), Chibikofu weevil (Sitona japonicus), Coconut weevil (Sitophilus oryzae), Sitophilus zeamais, Sphenophrus venatus vestitus, etc. Hymenoptera: Athalia japonica, Athalia rosae tuficornis , Apple sawfly (Arge mali), Chinese sawfly ( Arge pagana), chestnut bee (Dryocosmus kuriphilus), etc. DIPTERA: Tipula aino, Bradysia agrestis, Soybean fly (Asphondylia sp. ), melon fly (Dacus cucurbitae), orange fruit fly (Dacus dorsalis), orange fly (Dacus tsuneonis), sweet fruit fly (Rhacochlaena japonica), rice fly (Hydrellia griseola), rice plant fly (Hydrellia griseola) D (Hydrellia sasakii), Drosophila suzukii (Drosophila suzukii), Chlorops oryzae), Meromuza nigriventris, Agromyza oryzae, Chromatomyia horticola, Liriomyza bryoniae, Negihamo Liriomyza chinensis, Liriomyza trifolii, Liriomyza sativae ), Liriomyza huidobrensis, Delia antiqua, Delia platura, Pegomya cunicularia, Musca domestica, Ph ormia regina), Culex pipiens pallens Coquillett , Culex pipiens molestus Forskal, Anopheles (Anopheles) sinensis Wiedemann, Aedes albopictus (Skuse), and the like.

Examples of weeds include various weeds that are problematic in paddy fields, such as gramineous weeds such as barnyard grasses; Cyperaceae weeds, such as Cyperaceae, Shizui, and Blackwei; and Cyperaceae weeds, such as Pleurotus, Omodaka, and Hera Omodaka, and various weeds that are problematic in non-agricultural lands, fields, and orchards, such as nightshade and Datura Malvaceous weeds such as velvetleaf and golden deer, convolvulaceae weeds such as Ipomoea purpurea and bindweed, Amaranthaceae weeds such as black-and-white and blue-green, chrysanthemums such as barnacles, ragweeds, ragweeds and pinecone family weeds, cruciferous weeds such as mustard and shepherd's purse, Chenopodiaceous weeds such as chlomoth and pigweed, violet weeds such as field pansy, caryophyllaceous weeds such as chickweed, leguminous such as white clover, celandine and biscotti Weeds, Purslane family weeds such as purslane, Scrophulariaceae weeds such as Scrophulariaceae, Scrophulariaceae weeds such as Scrophulariaceae, Scrophulariaceae weeds such as Scrophulariaceae, Labiaceae weeds such as Scrophulariaceae, Euphorbiaceae weeds such as sorghum, barnyard grass, corn sorghum, crabgrass, goosegrass, catarrhalia, sorghum, oat, oat , ryegrass, green foxtail, and allium japonicum; cyperaceae weeds, such as speckled beetle and yellow husk; not to be

The amount of application of the water-floating granule composition of the present invention can be appropriately selected and increased or decreased depending on the target pests and weeds. The weight is usually 10 to 200 g, preferably 20 to 60 g, as a result of considering the ease of throwing, and the number of divided packages is usually sufficient by throwing 2 to 40 per 10 ares. A biological effect can be exerted, and the number is preferably 4 to 20.

Hereinafter, formulation examples of the water-floating granule composition of the present invention will be shown and explained in detail, but the present invention is not limited to these. In addition, in the following formulation examples, "%" indicates % by mass.

Trial production example 1
Pyrazolate bulk (purity 93.7%) 1670.25 parts, NE-291PG (trademark) (manufactured by Nippon Nyukazai Co., Ltd., dialkyl sulfosuccinate salt) 21.25 parts and tap water 808.50 parts were mixed, and an attritor ( The mixture was wet pulverized with a registered trademark 1S type (manufactured by Mitsui Kinzoku Mining Co., Ltd.) to obtain a pyrazolate premix slurry (agrochemical active ingredient content: 62.6%).

Trial production example 2
6-chloro-3-(2-cyclopropyl-6-methylphenoxy)pyridazin-4-yl morpholine-4-carboxylate bulk (purity 98.0%) 1530.61 parts, NE-291PG (trademark) (Japan Emulsifier, dialkyl sulfosuccinate salt) 21.25 parts and 947.89 parts of tap water are mixed and wet pulverized with Attritor (registered trademark) Model 1S (manufactured by Mitsui Kinzoku Mining Co., Ltd.) to give 6-chloro-3- A (2-cyclopropyl-6-methylphenoxy)pyridazin-4-yl morpholine-4-carboxylate slurry (pesticide active ingredient amount: 60.0%) was obtained.

Example 1
35 parts of the pyrazolate premix slurry of Trial Production Example 1, 25 parts of cork (having a particle size of 0.5 mm or less), 15 parts of bentonite, 3 parts of Nucalgen (registered trademark) SX-C (manufactured by Takemoto Yushi Co., Ltd.), 5A of celogen 8 parts (Daiichi Kogyo Seiyaku Co., Ltd.) and 12 parts of cornstarch were mixed in a kneader, and then 5 parts of Toxanon (registered trademark) GR31A (Sanyo Kasei Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated through a 1.5 mm screen using an extrusion granulator Dome Gran (registered trademark) (manufactured by Dalton Co., Ltd.). It was dried for about 15 minutes in this fluidized bed dryer (hot air temperature 60° C.) and sieved in a 1.5 to 5 mm section to obtain granules.

Example 2
35 parts of the pyrazolate premix slurry of Trial Production Example 1, 25 parts of cork (having a particle size of 0.5 mm or less), 15 parts of bentonite, 3 parts of Nucalgen (registered trademark) SX-C (manufactured by Takemoto Yushi Co., Ltd.), 5A of celogen 8 parts (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and 12 parts of potato starch were mixed in a kneader, and then 5 parts of Toxanon (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 through a 1.5 mm screen using 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 sieved into 1.5-5 mm sections to obtain granules.

Example 3
12 parts of 6-chloro-3-(2-cyclopropyl-6-methylphenoxy)pyridazin-4-yl morpholine-4-carboxylate of Trial Production Example 2 and 25 parts of cork (having a particle size of 0.5 mm or less), bentonite 15 parts, Nucalgen (registered trademark) SX-C (manufactured by Takemoto Yushi Co., Ltd.) 3 parts, Cellogen 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 8 parts and cornstarch 35 parts were mixed in a kneader, 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 through a 1.5 mm screen using 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 sieved into 1.5-5 mm sections to obtain granules.

Example 4-6
30 g of the granules obtained in Examples 1 to 3 were coated on a polyvinyl alcohol water-soluble film (trade name: Hi-Selon (registered trademark) C-200AX or Hi-Selon (registered trademark) S-670 manufactured by Nippon Synthetic Chemical Industry Co., Ltd.). to obtain an agricultural chemical package.

Comparative example 1
35 parts of the pyrazolate premix slurry of Trial Production Example 1, 25 parts of cork (having a particle size of 0.5 mm or less), 27 parts of bentonite, 8 parts of Celogen 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and Nucalgen (registered trademark) SX -C (manufactured by Takemoto Yushi Co., Ltd.) was charged into a kneader and mixed, then 5 parts of Toxanon (registered trademark) GR31A (manufactured by Sanyo Chemical Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated through a 1.5 mm screen using 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 sieved into 1.5-5 mm sections to obtain granules.

Comparative example 2
35 parts of the pyrazolate premix slurry of Trial Production Example 1, 25 parts of cork (having a particle size of 0.5 mm or less), 15 parts of bentonite, Celogen (registered trademark) 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 8 parts and Nucalgen ( After mixing 3 parts of registered trademark SX-C (manufactured by Takemoto Yushi Co., Ltd.) and 12 parts of perlite in a kneader, 5 parts of Toxanon (registered trademark) GR31A (manufactured by Sanyo Chemical Co., Ltd.) and an appropriate amount of water are added and kneaded. bottom. The kneaded product was extruded and granulated through a 1.5 mm screen using 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 sieved into 1.5-5 mm sections to obtain granules.

Comparative example 3
35 parts of the pyrazolate premix slurry of Trial Production Example 1, 25 parts of cork (having a particle size of 0.5 mm or less), 15 parts of bentonite, Celogen (registered trademark) 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 8 parts and Nucalgen ( After mixing 3 parts of SX-C (manufactured by Takemoto Oil Co., Ltd.) and 12 parts of wood flour in a kneader, 5 parts of Toxanone (registered trademark) GR31A (manufactured by Sanyo Chemical Co., Ltd.) and an appropriate amount of water are added and kneaded. combined. The kneaded product was extruded and granulated through a 1.5 mm screen using 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 sieved into 1.5-5 mm sections to obtain granules.

Comparative example 4
35 parts of the pyrazolate premix slurry of Trial Production Example 1, 25 parts of cork (having a particle size of 0.5 mm or less), 8 parts of Celogen (registered trademark) 5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and Nucalgen (registered trademark) SX -C (manufactured by Takemoto Yushi Co., Ltd.) and 27 parts of cornstarch were mixed in a kneader, then 5 parts of Toxanon (registered trademark) GR31A (manufactured by Sanyo Chemical Co., Ltd.) and an appropriate amount of water were added and kneaded. The kneaded product was extruded and granulated through a 1.5 mm screen using 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 sieved into 1.5-5 mm sections to obtain granules.

Test Example 1 Formability of Granules The formability of granules during extrusion granulation of the granules of Examples 1 to 3 and Comparative Examples 1 to 4 was visually judged and judged as follows.
○: Grain moldability is good, no half-chipped grains are observed △: Grain moldability is insufficient, half-chipped grains are found here and there ×: Cannot be formed as grains

Test Example 2 Disintegration and dispersibility of floating granules 2 g of the granules produced in Examples 1 to 3 and Comparative Examples 1 to 4 were charged from the top of a glass beaker containing 1 L of tap water, and the state of disintegration and dispersion of the granules was measured. The following judgments were made by visual observation.
○: Good disintegration and dispersibility, forming a uniform dispersion △: Do not form a uniform dispersion due to poor disintegration of the granules ×: The granules do not disintegrate or settle without dispersing even if they collapse

Test Example 3 Stability of Active Ingredients over Time The granules produced in Examples 1 to 3 and Comparative Examples 1 to 4 were sealed in aluminum-laminated bags and stored in a constant temperature machine at 54° C. for 14 days. The content of the active ingredient in the granular water-floating granules before and after the passage of time was quantified by liquid chromatography to evaluate changes over time. The results were calculated from the residual ratio of the active ingredient after the passage of time (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 △: Residual rate of active ingredient 93.0% to 95.9%
×: Residual rate of active ingredient 92.9% or less Residual rate (%) = [(Amount of agricultural chemical active ingredient after storage)/(Amount of agricultural chemical active ingredient before storage)] × 100

The results of Tests 1-3 are shown in Table 1.

As is clear from the test examples, the water-floating granules according to the present invention have excellent granule moldability, granule disintegration and dispersibility, and stability of the active ingredient of agricultural chemicals, which were difficult to achieve with formulations based on known technologies listed as comparative examples. , and a highly practical water-floating granule was obtained.

The surface-floating granules of the present invention are excellent in manufacturability, exhibit good diffusibility of the active ingredient upon application, and exhibit excellent stability over time, making them useful formulations as agricultural materials.

Claims (9)

A water-floating granular composition comprising at least one starch selected from the group consisting of cornstarch and potato starch , bentonite, a buoyancy agent, a surfactant, an active agricultural ingredient and water. 2. The water-floating granular composition according to claim 1, wherein the starch is corn starch. 3. The water-floating granule composition according to claim 1 or 2 , wherein the buoyant material is at least one selected from the group consisting of baked vermiculite, foamed shirasu, foamed perlite, cork and expanded polystyrene. 4. The water-floating granular composition according to any one of claims 1 to 3 , wherein the agricultural chemical active ingredient is a herbicidal active ingredient. 5. The agricultural chemical active ingredient is (A1) a bleaching herbicidal compound or a salt thereof and/or (A2) an acetolactate synthase-inhibiting herbicidal compound or a salt thereof, according to any one of claims 1 to 4 . Water floating granule composition. (a) starch that is at least one selected from the group consisting of cornstarch and potato starch , bentonite, buoyancy agent, surfactant, agricultural chemical active ingredient and water, and if necessary, other auxiliary ingredients are mixed and wet-processed The water-floating granule composition according to any one of claims 1 to 5 , comprising a step of granulating, and (b) a step of drying, crushing and sieving the granules obtained in said step. manufacturing method. A method for applying a water-floating granule composition, which comprises directly spraying the water-floating granule composition according to any one of claims 1 to 5 onto paddy fields. A method for applying a water-floating granule composition, which comprises encapsulating the water-floating granule composition according to any one of claims 1 to 5 in a water-soluble film and directly spraying it on paddy fields. An agricultural chemical formulation characterized by enclosing the water-floating granular composition according to any one of claims 1 to 5 in a water-soluble film.