JP2000095603A - Agrochemical granules for water surface application and granular carrier for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agrochemical granules for application on water surface having improved floating rate on water surface capable of applying in low dose by including a liquid having a specific gravity including a water soluble solid salt of an organic acid and an agrochemical component slightly soluble in water. SOLUTION: The granular carrier including the water-soluble solid organic salt [alkaline (earth) metal compounds or the like of organic acid selected from an aromatic carboxylic acid, an aliphatic carboxylic acid or an aromatic sulfonic acid, preferably having 50 to 350 of molecular weight] is obtained. This carrier is used for the improvement of the floating rate of the effective agrochemical component of the agrochemical granules for water surface application. The preferable amount of formulation of the water-soluble salt of the organic acid is 25 to 100% in the granular carrier. The binder having water dissolving rate higher than that of the water-soluble solid salt of the organic acid is preferably included in this granular carrier. The preferable specific gravity of the granular carrier or the solution including the water soluble solid salt of the organic acid and the agrochemical effective component slightly soluble in water is >=1.0.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a granular carrier for producing a pesticide granule for water application which contains a water-soluble solid organic acid salt and has an improved surface floating rate of the pesticidal active ingredient, and the granular carrier or the aqueous carrier. Containing a liquid having a specific gravity of 1.01 or more containing a water-soluble solid organic acid salt and a poorly water-soluble agrochemical active ingredient (excluding cyhalofop butyl).
The present invention relates to a water-applied pesticide granule having an improved pesticidal active ingredient in which the surface levitation rate is improved, or to use of the granule as a water-applied pesticide.

[0002]

2. Description of the Related Art Conventionally, a water-insoluble inorganic solid carrier such as bentonite, calcium carbonate, talc, clay, diatomaceous earth, gypsum, etc., as a pesticide granule, is mixed with Kneaded, extruded and granulated, dried and sized, granules with or without pesticidal active ingredients, impregnated with liquid or liquid pesticide active ingredients, and with the above-mentioned grain nuclei A powdery or powdered agricultural chemical active ingredient coated with a suitable binder is generally used.

[0003] However, the pesticide granule described above has a drawback that when the pesticidal active ingredient is poorly water-soluble, it is difficult to release a required amount of the active ingredient from the granule at a required time after treatment in a paddy field. When a pesticidal active ingredient having high adsorptivity is used, a sufficient biological effect may not be obtained, or the pesticidal active ingredient may be unevenly distributed in high concentration in the vicinity of granules, which may contribute to phytotoxicity to crops. In addition, some pesticidal active ingredients float on the water surface and exhibit better effects, and it is difficult for ordinary pesticide granules to float the active ingredient on the water surface from particles that settle on the soil surface.

[0004] In order to solve such drawbacks, attempts have been made to float the pesticidal active ingredient or a liquid containing the same on the water surface.

For example, urea, ammonium sulfate, ammonium nitrate, ammonium chloride, potassium chloride, ammonium bicarbonate, ammonium sulfate, sodium borate,
When a water-soluble carrier such as sodium carbonate, modified starch, and sugar and an inorganic or organic film-forming substance having a lower water dissolution rate than the water-soluble carrier are dropped into water, the water-soluble carrier dissolves in water first. In view of this, a study has been made on a granule in which the granule floats on the water surface together with an air-retentive film-forming substance holding air in the granule. However, in such granules, both a water-soluble carrier and a film-forming substance are essential for floating the granules (JP-B-63-30281 and JP-A-9-118602).

Attempts have also been made to incorporate a water-soluble carrier and a waxy substance into the granules so that the granules float on the water surface (Japanese Patent Publication No. 58-26882, Japanese Patent Publication No. 58-288).
No. 41, Japanese Patent Publication No. 63-7162,
246802 and JP-A-7-101805). However, in such a granule, the pesticidal active ingredient is covered with the waxy substance, so that the dissolution into water is delayed, and a required amount of the pesticidal active ingredient is not released from the granule at a required time.

[0007] Further, a granule prepared by dissolving a pesticidally active ingredient in an organic solvent and holding a solution having a specific gravity of 1 or less on a solid carrier has been studied (JP-A-63-17802, JP-A-1-254604). And JP-A-5-65201). However, this is because the pesticidal active ingredient floats because the specific gravity of the solution containing the pesticidal active ingredient is 1 or less, and the present application in which the specific gravity of the liquid containing the poorly water-soluble pesticidal active ingredient is 1.01 or more. Different from the invention.

On the other hand, JP-A-8-175903 describes an agricultural chemical formulation containing a water-soluble basic agricultural chemical active ingredient and a water-soluble organic acid salt as a sustained-release agent.
This is different from the pesticide granule of the present invention containing a poorly water-soluble pesticide active ingredient and a water-soluble solid organic acid salt.

JP-A-6-72801 and JP-A-6-72803 disclose an aromatic carboxylate, a water-soluble polymer compound, a substantially water-insoluble pesticide bulk material and a surfactant. A composition for a pesticide solid formulation is described, which is an improvement in the emulsion stability and shape stability of the formulation, a liquid containing a water-soluble solid organic acid salt and a poorly water-soluble pesticide active ingredient. There is no suggestion that the pesticidal active ingredient of the contained pesticide granule or the liquid containing it floats on the water surface.

[0010] It has not been known that a water-soluble solid organic acid salt is added to a particulate carrier to improve the water surface floating rate of an active agricultural chemical.

[0011]

DISCLOSURE OF THE INVENTION The present inventors float the pesticidal active ingredient on the water surface, release the required amount of the pesticidal active ingredient at the required time, and have a high concentration of the pesticidal active ingredient in the vicinity of the grains by soil adsorption. Research on pesticide granules which are not unevenly distributed and granular carriers for producing the same, specific gravity of 1.0 containing a water-soluble solid organic acid salt and a poorly water-soluble pesticide active ingredient.
By containing one or more liquids, it has been found that after pouring the pesticide granules for water application into water, the water surface floating rate of the pesticide active ingredient is significantly improved. It is not necessary to dilute the soluble pesticide active ingredient with a large amount of organic solvent, and it is possible to prepare a pesticide granule having a high content of the pesticide active ingredient, which is convenient for reducing the dosage for labor saving purposes. The present inventors have found that a particulate carrier containing an organic acid salt improves the water surface floating rate of an agricultural chemical active ingredient, and completed the present invention.

[0012]

DISCLOSURE OF THE INVENTION The present invention relates to a granular carrier for producing a pesticide granule for water application which contains a water-soluble solid organic acid salt and has an improved water surface floating rate of an active pesticide, and the granular carrier. Alternatively, a water surface containing a liquid having a specific gravity of 1.01 or more containing a water-soluble solid organic acid salt and a poorly water-soluble pesticide active ingredient (excluding cyhalofop butyl), and having an improved water surface floating rate of the pesticide active ingredient. The present invention relates to an applied pesticide granule or the use of the granule as a pesticide applied to a water surface.

[0013] The granular carrier for producing a pesticide granule to be applied to the surface of a water surface of an active ingredient of the pesticide of the present invention having an improved surface levitation ratio includes a water-soluble solid organic acid salt, thereby covering other components. It is a granular carrier that improves the water surface levitation rate of the below-mentioned agricultural chemical active ingredient of the pesticide granules for water application produced by impregnation or absorption.

The pesticide granules for water application according to the present invention are obtained by mixing a water-soluble solid organic acid salt into a paddy field, and once the granules have settled in water, the pesticide is effective within a few minutes to several hours. A pesticide granule in which a liquid containing an ingredient or a pesticidal active ingredient floats on the surface of water. Alternatively, a pesticide granule may be used in which the grains float on the water surface immediately after treatment in the paddy field, disintegrate with the dissolution of the organic acid salt, and release the pesticide active ingredient to the water surface.

The water surface floating rate of the pesticide granules for water application according to the present invention can be determined by the following method. That is, in a glass bottle having an inner diameter of 4.6 cm and a height of 2 cm on the top of a cylindrical body having an inner diameter of 6 cm and a height of 10.6 cm,
300 ml of 3 times hard water was added, 10 mg of the pesticide granules for water application of the present invention were uniformly added thereto, and the mixture was allowed to stand at room temperature for 1 hour.
The glass rod is immersed 3 cm below the surface of the water and stirred 30 times at a rate of 30 times a minute. 2 ml of the ethyl acetate layer is collected with a whole pipette and analyzed with an analytical instrument such as high performance liquid chromatography, gas chromatography and the like. By doing
Measure the amount of active pesticide dissolved in the ethyl acetate layer,
The water surface levitation rate was calculated by the following equation.

[0016]

## EQU1 ## Water surface levitation rate (%) = (Ethyl acetate layer 2 collected)
Amount of pesticide active ingredient dissolved in 0 ml) ÷ (amount of pesticide active ingredient contained in 10 mg of pesticide granule) × 100.

The water surface floating rate of the pesticidal active ingredient in the pesticide granules for water application according to the present invention is usually 30 to 100%, preferably 45 to 100%, more preferably 60 to 100%.
100%.

The water surface floating rate of the pesticidal active ingredient in the pesticide granules for water application according to the present invention is usually 30 to 100%, preferably 45 to 100%, more preferably 60 to 100%.
100%.

The water-soluble solid organic acid salt used in the present invention includes, for example, aromatic carboxylate such as benzoate, salicylate, phthalate, sorbate, citrate, tartrate, etc. Acetate, succinate, propionate,
Formate, an aliphatic carboxylate such as lactate, an aromatic sulfonate such as toluene sulfonate, an aliphatic sulfonate such as lauryl sulfate, and the like. Quaternary ammonium salts such as alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as calcium salts, or ammonium salts of organic acids selected from acids, aliphatic carboxylic acids or aromatic sulfonic acids It is. The molecular weight of the water-soluble solid organic acid salt used in the present invention is preferably from 50 to 350, and more preferably from 80 to 200. The water-soluble solid organic acid salt used in the present invention is, specifically, sodium benzoate, ammonium benzoate, potassium benzoate, calcium benzoate, sodium salicylate, ammonium salicylate, potassium hydrogen phthalate, potassium sorbate, Sodium sorbate, sodium citrate, potassium citrate, triammonium citrate, dipotassium hydrogen citrate, sodium tartrate, potassium tartrate, potassium hydrogen tartrate, ammonium tartrate, potassium acetate,
Calcium acetate, ammonium acetate, diammonium succinate, sodium succinate, sodium propionate, potassium propionate, calcium propionate,
Potassium formate, calcium formate, ammonium lactate, sodium toluenesulfonate, potassium toluenesulfonate or sodium lauryl sulfate, particularly preferably sodium benzoate, potassium benzoate, potassium sorbate, sodium sorbate, sodium propionate, calcium propionate, Sodium propionate, potassium propionate, sodium toluenesulfonate or potassium toluenesulfonate, most preferably sodium benzoate.

These water-soluble solid organic acid salts may be used alone or in a combination of two or more.

The larger the amount of the water-soluble solid organic acid salt to be used, the higher the floating rate of the pesticidal active ingredient, and usually 25 to 100% in the granular carrier and 20 to 99% in the pesticide granules for water application. Yes, preferably 3 in the granular carrier.
0-100%, 25-99% in water-applied pesticide granules, more preferably 40-100% in granular carriers.
% In pesticide granules for water application.

The pesticidal active ingredient used in the present invention, except for cyhalofop-butyl, is not particularly limited as long as it is one commonly used as a pesticide such as an insecticide, fungicide, herbicide, or plant regulator. There are no insecticides, for example, isoxathion, propafos, trichlorfon,
Formotion, dimethoate, monocrotofos, acephate, carbofuran, carbosulfan, thiocyclam, cartap, bensultap, benfracarb,
Systemic insecticides such as fratiothiocarb, carbaryl, buprofezin, fenobucarb, metolcarb, propoxure, mesomil, imidacloprid, nittenpyram, acetamiprid, etc .; Synthetic pyrethroids and the like that are effective against insect pests.

Examples of fungicides include probenazole, isoprothiolane, iprobenfos, tricyclazole, pyroquilon, carpropamide, azoxystropine, 7-fluoro-1,2,5,6-tetrahydro-
4H-pyrrolo [3.2.1-i. j] Imotic agents such as quinolin-4-one, flutranyl, mepronil, thifluzamide, flametopil, (RS) -2- (4-fluorophenyl) -1- (1H-1,2,4-triazole-1
-Yl) -3-trimethylsilyl-propan-2-ol and the like, and teclophthalam, benomyl and the like.

Examples of herbicides include pyrazolate,
Pyrazole herbicides such as benzophenap and pyrazoxifen; sulfonylurea herbicides such as bensulfuron-methyl, imazosulfuron, pyrazosulfuron-ethyl, sinosulfuron, ethoxysulfuron, azimsulfuron and cyclosulfamuron; butachlor, pretilachlor, tenylchlor and the like Chloroacetanilide herbicides; carbamate herbicides such as thiobencarb, molinate, dimepiperate, and esprocarb; triazine herbicides such as simethrin and dimethamethrin; chlornitrophen, clomethoxynil, bifenox and the like
diphenyl ether herbicides expressing protox inhibition; other protox inhibitors such as oxadiazone, oxadialgyl, pentoxazone; naproanilide, MCPA and its alkali metal salts and esters, 2,4-D and its alkali metal salts and esters, MCPB And esters thereof, phenoxy herbicides such as clomeprop; pyributicarb, butamiphos, mefenacet, anilofos, piperofos, dithiopyr, simmethillin, quinclorac, etobenzanide, cafenstrol, epoplodan, pyriminobac-methyl, oxadiclomefone, 4- ( 2-chlorophenyl) -N-cyclohexyl-4,5-dihydro-N-ethyl-5-oxo-1H
-Tetrazole-1-carboxamide (NBA06
1), other fly agents such as methyl N- [4- (benzothiazol-2-ylmethoxy) -2-methylphenyl] carbamate; Daimlon, cumyluron, bromobutide, benfresate, [3- (2-chloro-4-methyl) Sulfonylbenzoyl) -4-phenylthio] bicyclo [3.2.1] oct-3-en-2one (SB50
Other paddy herbicides that exhibit a herbicidal effect on Cyperaceae such as 0); and other paddy herbicides such as bentazone and quinoclamin.

Examples of plant regulators include inabenfide, paclobutrazol, uniconazole, tripentenol and the like.

[0026] As the pesticidal active ingredient to be used, preferably, an active ingredient exhibiting a biological effect on the water surface, an active ingredient having a strong soil adsorption property, or a water solubility of 30 pp is preferred.
m, for example, synthetic pyrethroids such as isoxathion, cycloprothrin, etofenprox, and silafluofen; dimetamethrin, simethrin, bentazone, molinate, MCP, 2,4-
A herbicide exhibiting a herbicidal effect by foliage absorption of ethyl ester of D or the like; flutranil, mepronil, thifluzamide, flametopyr, (RS) -2- (4-fluorophenyl) -1- (1H-1,2,4-triazole -1-
Il) -3-trimethylsilylpropan-2-ol and the like. A liquid or solid pesticidal active ingredient having a melting point of 50 ° C. or less is suitable for producing the pesticide granules for water application according to the present invention.

The compounding amount of the pesticidal active ingredient to be used is usually 0.1 to 80%, preferably 0.5 to 50%, more preferably 0.5 to 50%, based on the pesticide granules for water application of the present invention. Is 1 to 30%.

The pesticide granules for water application according to the present invention may further contain, if necessary, a binder, a bulking agent, a granulating agent, a disintegrating agent, a dispersing agent, Other auxiliaries, such as emulsifiers and water surface spreaders, can be incorporated.

As the auxiliary agent, for example, a surfactant, a saccharide and the like can be used. The surfactant, the saccharide and the like to be used have the properties, the kind and the content of the active ingredient or the kind and the amount of the other ingredient. The purpose of use varies depending on the formulation and the dosage form of the preparation, or it can be used for a plurality of purposes.

Binders are used to increase the hardness of the grains, for example, dextrins of relatively low molecular weight, water-soluble starch derivatives such as pregelatinized starch, polyvinylpyrrolidone, salts of polyacrylic acid, salts of carboxymethylcellulose. Water-soluble polymer substances such as polyvinyl alcohol, lignin sulfonic acid salts, gum arabic, xanthan gum, guar gum, etc .; monosaccharides such as glucose and fructose; and disaccharides such as sucrose, maltose and lactose. Sugars; oligosaccharides; fine particles of montmorillonite-based mineral substances such as bentonite are preferable, and those having excellent disintegration of particles are preferable, and glucose is particularly preferable.

The water dissolution rate of the binder may be lower than the water dissolution rate of the water-soluble solid organic acid salt, provided that the water surface floating rate of the pesticidal active ingredient is not reduced. It is faster than the rate of salt dissolution in water.

The water dissolution rates of the water-soluble solid organic acid salt and the binder were compared by the following method. That is, a plurality of 3
In a 00 ml beaker, 20 ° C. and 200 ml of ordinary water were respectively added, and while stirring at a constant speed using a stirrer, a water-soluble solid organic acid salt in an amount proportional to the blending ratio in the pesticide granules for surface application of the present invention and The binders are simultaneously poured into water in a range not exceeding 20 g, and the time required for complete dissolution in water is compared.

The amount of the binder to be used varies depending on the composition of the formulation, the granulation method, the size of the granules and the like, but is usually 0.1 to 40% in the pesticide granules, and preferably 0.1 to 40%. 3-2
0%, more preferably 0.5 to 5%.

The extender is not particularly limited as long as it is generally used for agricultural chemicals, and examples thereof include bentonite, clay,
Mineral substances such as calcium carbonate, diatomaceous earth, amorphous silicon dioxide, and talc; starch, cork, wood flour, sawdust, coffee bean powder, tub powder, cellulose powder, microcrystalline cellulose, rice husk powder, rice bran, bran, coconut shell powder, etc. Monosaccharides such as glucose and fructose; disaccharides such as sucrose, maltose and lactose; oligosaccharides; water-soluble inorganic compounds such as potassium chloride, ammonium sulfate and urea; Mineral fine powder such as pulverized vermiculite is preferred, and those which hardly adsorb the pesticidal active ingredient are preferred, and particularly preferred are monosaccharides, disaccharides, oligosaccharides and water-soluble inorganic compounds. In addition, for the purpose of further increasing the water surface floating rate and the floating speed of the pesticidal active ingredient, a buoyant bulking agent such as cork, foamed shirasu, foamed pumice, foamed pearlite, foamed synthetic resin, synthetic resin powder, and plastic hollow body is used. This is a preferred embodiment of the present invention.

The amount of the extender used is usually 1 to 80% in the granulation carrier and 1 to 80% in the pesticide granules to be applied to the surface.
60%.

The granulability improver is used for the purpose of improving the granulation property when granulating a granular carrier or a pesticide granule by a wet method. For example, various commonly used surfactants and kneading agents can be used. Nonionic surfactants such as polyoxyethylene alkylaryl ethers, polyoxyethylene alkyl ethers, polyoxyethylene alkyl esters, and polyoxyethylene aryl aryl ethers, which have a viscosity that imparts plasticity to the compound; Anionic surfactants such as sodium salts of succinates and sodium salts of alkylbenzenesulfonic acids; and the like. When a liquid containing an active agricultural chemical is allowed to float on the water surface for a long time, those having no or small wetting action are preferred. And a nonionic surfactant or an anionic surfactant having an HLB of 8 or less. In the case where a surfactant is more preferable and the poorly water-soluble pesticidal active ingredient is to be dissolved and dispersed in water in a short time, a surfactant having a wetting action or an emulsifying action is preferable, and a nonionic interface having an HLB of 10 or more is preferred. Surfactants or anionic surfactants are more preferred.

The amount of the granulation improver used is usually 0.01 to 5%, preferably 0.02 to 3% in the granular carrier or granule immediately after the granulation drying step. .

The water surface spreader is used for the purpose of rapidly spreading the liquid containing the pesticidal active ingredient that has floated over the entire surface of the water, enhancing the biological effect of the pesticidal active ingredient, and reducing the phytotoxicity. Copolymers of carboxylic acids such as acids; polycarboxylic acid-type polysoaps such as sodium salts, potassium salts, and ammonium salts of copolymers of carboxylic acids with styrene sulfonic acid and vinyl groups; oleic acid Soaps such as sodium and potassium stearate; sodium dialkylsulfosuccinate,
Anionic surfactants such as sodium dodecylbenzenesulfonate and sodium lauryl sulfate; polyoxyethylene alkyl aryl ether, polyoxyethylene aryl aryl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, alkyl ester of sorbitan, silicone Nonionic surfactants such as surfactants, acetylene surfactants, and pluronic surfactants; the nonionic surfactants are phosphoric acid or sulfuric acid esters, and in some cases, these are neutralized with an appropriate alkali. Detergent surfactant;
Fluorosurfactants; Mineral oils; Silicone oil; Vegetable oils such as rapeseed oil, rice bran oil, camellia oil, coconut oil, sesame oil, etc .; Resins such as rosin; camphor white oil; α-pinene; camphor; naphthalene; And acetylene-based surfactants, silicone-based surfactants, fluorine-based surfactants,
Nonionic surfactants having a mineral oil or HLB of 8 or less.

The acetylene-based surfactants are acetylene alcohols, acetylene diols, and surfactants obtained by adding an alkylene oxide thereto, and particularly preferably acetylene diols.

The silicone-based surfactants include those obtained by introducing polyethylene oxide, polypropylene oxide or polyethylene oxide and polypropylene oxide into the terminal, side chain or a part of the methyl group of the side chain of dimethylpolysiloxane, and those having these terminals. Is a nonionic surfactant containing, as a main component, a polyether-modified silicone oil in which a hydroxyl group is etherified with an alkyl group or esterified with an acyl group.

Fluorosurfactants include ordinary anions,
It is a surfactant in which the hydrogen atom of a cation, nonionic or amphoteric surfactant is replaced with a fluorine atom, and is known to be superior in surface tension lowering power as compared to a surfactant before introducing a fluorine atom. .

The mineral oils mainly contain paraffinic, naphthenic and aromatic high-boiling solvents, such as liquid paraffin, isoparaffin and machine oil.

Nonionic surfactants having an HLB of 8 or less are those having a relatively small number of moles of ethylene oxide to be added among the above nonionic surfactants, and those having low water solubility and little wetting action. Many.

The amount of the water surface spreader to be used varies depending on the formulation and formulation such as the type and content of the active ingredient, the type of the water surface spreader, and the type and amount of other components. It is 0.01 to 20% in the granule, preferably 0.1 to 10%, more preferably 0.2 to 5%.

The water surface spreader may be kneaded with other components at the time of granulation, or may be absorbed or coated on the granular carrier alone or together with the active agricultural chemical after granulation.

In the present invention, a solvent can be used for the purpose of dissolving or diluting the poorly water-soluble pesticidal active ingredient. The solvent used is soluble in the pesticidal active ingredient, does not affect the stability of the pesticidal active ingredient, and has a high boiling point, low toxicity and low flammability. And low-viscosity liquid paraffin, chlorinated paraffin, isoparaffin, machine oil, mineral oils such as polybutene, paraffinic, naphthenic, and aromatic high-boiling solvents; Vegetable oils such as bean oil and rapeseed oil; animal oils such as whale oil and sardine oil; silicone oils and derivatives thereof; various mono- or di-carboxylic acids such as oleic acid, coconut oil fatty acid, maleic acid, fumaric acid, phthalic acid and adipic acid Plasticizers such as various esters of phosphoric acid such as tributyl phosphate and trichloroethyl phosphate; ethylene glycol, diethylene glycol, Ethylene glycol,
Glycols such as propylene glycol and butanediol and various esters and ethers thereof; lactones such as ε-caprolactone and γ-butyrolactone;
Alkyl pyrrolidone is mentioned, and N-alkyl pyrrolidone is particularly preferred.

The specific gravity of the solution containing the pesticidal active ingredient of the present invention may be 1.01 or more, and preferably 1.01 or more.
2.0, more preferably 1.02 to 1.5, and even more preferably 1.03 to 1.25.
The liquid containing the pesticidal active ingredient of the present invention is not particularly limited as long as it is a liquid, and the pesticidal active ingredient itself may be a liquid, including solutions and suspensions, and those having low viscosity and Including high ones.

In the present invention, an emulsifier can be used for the purpose of emulsifying an active agricultural chemical in water. The emulsifier can be added to the liquid agricultural chemical active ingredient or the liquefied agricultural chemical active ingredient as needed, and can be selected in the same manner as a normal emulsion emulsifier according to the agricultural chemical active ingredient and the solvent used.

The water-soluble solid organic acid salt, the pesticidal active ingredient and the other ingredients are pulverized, if necessary, then granulated using a suitable granulator, dried and sized to obtain granules according to the present invention. A water-applied pesticide granule is obtained. Also, granulated carriers are manufactured by granulating only the remaining components without mixing the pesticidal active ingredients,
If necessary, the pesticidal active ingredient is pulverized together with a suitable pulverizing auxiliary or other auxiliary if necessary to form a concentrated premix, which is coated on the granular carrier with a suitable binder, or If necessary, it is dissolved in an appropriate solvent, and if necessary, other auxiliaries are added to form a concentrated premix (hereinafter, referred to as an oil premix), which is absorbed by the granular carrier. An applied pesticide granule can be obtained.

Granulation can be carried out using a granulator such as a side-pressing or basket-type extrusion granulator, a mixing granulator, a rolling granulator, a fluidized-bed granulator, and a spray dryer. . In the case of absorbing the oil premix after preparing the granular carrier in advance, as a granulator, one that does not apply strong pressure or shearing force is preferable so that the oil absorption capacity of the granular carrier does not decrease. Machine, extrusion granulator and fluidized bed granulator. The most preferred granulation method is the extrusion granulation method.

Among the above-mentioned preparation methods, the most preferable method for increasing the surface levitation rate of the pesticidal active ingredient is that a granular carrier containing a water-soluble solid organic acid salt prepared in advance is added to a liquid pesticidal active ingredient or an oil precipitant. It is a method of absorbing the mix.

When the pesticide granules for water application contain two or more kinds of pesticidal active ingredients, the above production methods may be combined depending on the kind of pesticidal active ingredient. For example, a method of absorbing a liquid pesticidal active ingredient or an oil premix into a granular carrier containing a previously prepared water-soluble solid organic acid salt has a high floating rate of the active ingredient. In the case of granules blended with an active ingredient, first, the other pesticidal active ingredients are kneaded and granulated together with other ingredients including a water-soluble solid organic acid, and then it is desired to further float the obtained granules. By absorbing a liquid pesticidal active ingredient or an oil premix containing the pesticidal active ingredient, a target pesticide granule for water application can be obtained.

The stirring mixer used for absorbing the liquid pesticidal active ingredient or the oil premix into the granular carrier or for coating the granular carrier with the powdery concentrated premix containing the pesticidal active ingredient includes: A model with less crushing of particles mixed at low speed is preferable,
For example, a Nauta mixer, a ribbon blender, a rotary blender, a V-type mixer and the like can be mentioned.

When the liquid pesticidal active ingredient or the oil premix is to be absorbed by the granular carrier, the previously prepared granular carrier is usually charged into the above-mentioned stirring mixer.
Under stirring, a liquid pesticidal active ingredient or an oil premix is added and absorbed. In the oil premix, auxiliaries such as a solvent, an emulsifier, and a water surface spreader can be blended as required.

The pesticide granules for water application according to the present invention can be sprayed in the same manner as ordinary granules such as hand sowing and mechanical spraying.
Furthermore, it is also possible to apply the transfer directly into a paddy field from a container (for example, a box, a bottle, a bag, etc.) provided with an appropriate transfer port.

Further, since the pesticide granules for water application according to the present invention have a high water surface floating rate of the pesticidal active ingredient, they do not need to be uniformly sprayed into the paddy field as in the case of general granules, so that the pesticide can be spread from the levee to the middle of the paddy field. (So-called frame spraying).

Further, the pesticide granules for water application according to the present invention can be thrown from a ridge or the like as a package in water-soluble paper and applied. In this case, it is preferable that the granule be of a type that floats on the surface of the water while keeping the shape of the granules so that the pesticidal active ingredient does not locally remain at the dropping point.

The water-soluble paper used is a film or sheet having the property of dissolving or dispersing in water, for example, a film or sheet made of polyvinyl alcohol or a derivative thereof, a film or sheet made of a pullulan film, or a carboxymethyl cellulose. Films or sheets made of sodium salt and cellulose, films or sheets made of polyethylene oxide or a derivative thereof, and the like are preferably used, which themselves are easily dispersed or dissolved in water to spread the pesticide active ingredient on the water surface. It is a film or sheet having properties, for example, a film (hereinafter referred to as a PVA film) or sheet made of polyvinyl alcohol or a derivative thereof.

Preferred embodiments of the present invention are as follows: (1) The water-soluble solid organic acid salt is an alkali metal salt or an alkaline earth metal of an organic acid selected from aromatic carboxylic acids, aliphatic carboxylic acids and aromatic sulfonic acids. A particulate carrier which is a salt or a quaternary ammonium salt. (2) The water-soluble solid organic acid salt has a molecular weight of 50 to 350.
Is a granular carrier. (3) The water-soluble solid organic acid salt has a molecular weight of 80 to 200.
Is a granular carrier. (4) The water-soluble solid organic acid salt is sodium benzoate,
A particulate carrier which is potassium benzoate, potassium sorbate, sodium sorbate, calcium propionate, sodium propionate, potassium propionate, sodium toluenesulfonate or potassium toluenesulfonate. (5) A granular carrier in which the water-soluble solid organic acid salt is sodium benzoate. (6) A granular carrier in which the amount of the water-soluble solid organic acid salt is 25 to 100% in the granular carrier. (7) A granular carrier in which the amount of the water-soluble solid organic acid salt is 30 to 100% in the granular carrier. (8) A granular carrier in which the amount of the water-soluble solid organic acid salt is 40 to 100% in the granular carrier. (9) A granular carrier comprising the granular carrier according to (1) to (8) and a binder having a higher water dissolution rate than the water-soluble solid organic acid salt. (10) A liquid having a specific gravity of 1.01 or more containing the granular carrier or the water-soluble solid organic acid salt of (1) to (9) and the poorly water-soluble pesticide active ingredient (excluding cyhalofop butyl). Pesticide granules for water application. (11) A pesticide granule for water application, wherein the poorly water-soluble pesticidal active ingredient has an solubility in water of less than 30 ppm. (12) A pesticide granule to be applied to the water surface, wherein the amount of the pesticide active ingredient is 0.5 to 50% based on the pesticide granule. (13) A pesticide granule to be applied to the water surface, wherein the amount of the pesticidally active ingredient is 1 to 30% based on the pesticide granule. (14) The water surface applied pesticide granules of (10) to (13)
A water-applied pesticide granule containing a water surface spreader. (15) In the pesticides for surface application of (10) to (14),
A pesticide granule for water application containing one or more buoyant bulking agents selected from cork, foamed shirasu, foamed pumice stone, foamed pearlite, foamed synthetic resin, synthetic resin powder and plastic hollow body. (16) The granule carrier of (1) to (9) has one or more kinds of buoyancy selected from cork, foamed shirasu, foamed pumice, foamed pearlite, foamed synthetic resin, synthetic resin powder and plastic hollow body. A granular carrier containing a bulking agent. (17) The above-mentioned method for producing pesticide granules for water application, wherein a granular carrier containing a water-soluble solid organic acid salt prepared in advance is absorbed with a liquid pesticidal active ingredient or an oil premix. (18) The pesticide granules for water application according to (10) to (15),
A method of spraying rice paddies directly as pesticides. (19) The water-applied pesticide granules of (10) to (15)
A method in which the transfer is sprayed directly into a paddy field from a container with a transfer port. (20) The pesticide granules for water application according to (10) to (15),
A method of throwing into water-soluble paper as a package from a ridge.

Hereinafter, the present invention will be described in more detail with reference to Examples, Comparative Examples, and Test Examples, but the scope of the present invention is not limited thereto. The following examples,
In Comparative Examples and Test Examples, unless otherwise specified.
Parts indicate parts by weight and% indicates% by weight.

[0061]

【Example】

[0062]

Example 1 Pesticide granule (1) Granular carrier As raw materials, 25 parts of sodium benzoate, LocaHelp 4
39 parts (Perlite, manufactured by Mitsui Kinzoku Mining Co., Ltd.) and 50 parts of glucose were mixed, and 30 parts of a 0.1% aqueous solution of sodium dioctylsulfosuccinate was added as kneading water, and a kneader (FM-NW-5, Powrex Co., Ltd.) was added. Made)
And extruded and granulated with a dome gran (made by Fuji Paudal Co., Ltd.) at a screen diameter of 1.0 mm, and a midget dryer (made by Fuji Paudal Co., Ltd., fluidized bed dryer)
And dried at a blowing temperature of 60 ° C. The obtained dried particles were sized using a sieve having an opening diameter of 1 mm and 0.5 mm to obtain a granular carrier of the present invention. (2) Oil premix As raw materials, 21.48 parts of carphos bulk material and 0.30 parts of Surfynol 104 (acetylene diol, manufactured by Air Products) were mixed to obtain an oil premix having a specific gravity of 1.21. (3) Pesticide granules Absorb 21.78 parts of the oil premix obtained in (2) in 78.22 parts of the granular carrier obtained in (1), and form a book containing 20% of isoxathion (an active ingredient of carphos). A pesticide granule of the invention was obtained.

[0063]

Example 2 Pesticide granules Sodium benzoate 30 as raw material for granular carrier
Parts, RocaHelp 439 (25 parts) and 45 parts of glucose were used in the same manner as in Example 1 to obtain a granular carrier and an agricultural chemical granule of the present invention.

[0064]

Example 3 Pesticide granules Sodium benzoate 40 as raw material for granular carrier
Parts, LocaHelp 439 (25 parts) and 35 parts of glucose were used in the same manner as in Example 1 to obtain a granular carrier and a pesticide granule of the present invention.

[0065]

Example 4 Pesticide granules Sodium benzoate 45 as raw material for granular carrier
Parts, LocaHelp 439 (25 parts) and 30 parts of glucose were used in the same manner as in Example 1 to obtain a granular carrier and a pesticide granule of the present invention.

[0066]

Example 5 Pesticide granules Sodium benzoate 65 as raw material of granular carrier
Parts, LocaHelp 439 (25 parts) and 10 parts of glucose were used in the same manner as in Example 1 to obtain a granular carrier and a pesticide granule of the present invention.

[0067]

Example 6 Pesticide granules Sodium benzoate 85 as raw material for granular carrier
Parts, RocaHelp 439 (5 parts) and 10 parts of glucose were used in the same manner as in Example 1 to obtain a granular carrier and an agricultural chemical granule of the present invention.

[0068]

Example 7 Pesticide granules Sodium benzoate 100 as raw material for granular carrier
A granular carrier and an agrochemical granule of the present invention were obtained in the same manner as in Example 1 except for using parts.

[0069]

Example 8 Pesticide granules A granular carrier and a pesticide granule of the present invention were obtained in the same manner as in Example 1 except that 65 parts of sodium benzoate and 35 parts of glucose were used as raw materials for the granular carrier.

[0070]

Example 9 Pesticide granules A granular carrier and a pesticide granule of the present invention were obtained in the same manner as in Example 1, except that 65 parts of sodium benzoate and 35 parts of potassium chloride were used as raw materials for the granular carrier.

[0071]

Example 10 Pesticide granules The granular carrier of the present invention was prepared in the same manner as in Example 1 except that 65 parts of sodium p-toluenesulfonate, 439 (25 parts) of locahelp and 10 parts of glucose were used as raw materials for the granular carrier. Pesticide granules were obtained.

[0072]

Example 11 Pesticide granules Potassium sorbate 65 as raw material of granular carrier
Parts, LocaHelp 439 (25 parts) and 10 parts of glucose were used in the same manner as in Example 1 to obtain a granular carrier and a pesticide granule of the present invention.

[0073]

Example 12 Pesticide granules Calcium propionate 6 as raw material for granular carrier
5 parts, LocaHelp 439 (25 parts) and glucose 10
A granular carrier and an agrochemical granule of the present invention were obtained in the same manner as in Example 1 except for using parts.

[0074]

Example 13 Pesticide granules Sodium propionate 6 as raw material for granular carrier
5 parts, LocaHelp 439 (25 parts) and glucose 10
A granular carrier and an agrochemical granule of the present invention were obtained in the same manner as in Example 1 except for using parts.

[0075]

Example 14 Pesticide granule (1) Granular carrier A granular carrier of the present invention was obtained in the same manner as in Example 1 (1) except that 100 parts of sodium benzoate was used as a raw material. (Same as the granular carrier described in Example 7.) (2) Oil premix As raw materials, 1.04 part of cycloprothrin bulk material, Surfynol 104 (0.30 part) and Solvesso 150
3.66 parts (aromatic solvent, Exxon Chemical Co., Ltd.) were mixed to obtain an oil premix having a specific gravity of 1.02. (3) Pesticide granule 5 parts of the oil premix obtained in (2) is absorbed into 95 parts of the granular carrier obtained in (1), and the pesticide granule of the present invention containing 1.0% of cycloprothrin is absorbed. Obtained.

[0076]

Example 15 Pesticide granules A granular carrier and a pesticide granule of the present invention were obtained in the same manner as in Example 14, except that 65 parts of sodium benzoate and 35 parts of glucose were used as raw materials for the granular carrier.

[0077]

Example 16 Pesticide granules A granular carrier and pesticide granules of the present invention were obtained in the same manner as in Example 14, except that 65 parts of sodium benzoate and 35 parts of potassium chloride were used as raw materials for the granular carrier.

[0078]

Example 17 Pesticide granule (1) Granular carrier The granular carrier of the present invention was obtained in the same manner as in Example 14 (1). (2) Oil premix As raw materials, 3.15 parts of a diazinon drug substance, Surfynol 104 (0.30 parts), and cyclohexanone 1.5
5 parts were mixed to obtain an oil premix having a specific gravity of 1.04. (3) Pesticide granules 5 parts of the oil premix obtained in (2) is absorbed in 95 parts of the granular carrier obtained in (1), and diazinon is obtained.
A pesticide granule of the present invention containing 0% was obtained.

[0079]

Example 18 Pesticide Granules As a raw material for an oil premix, an oil having a specific gravity of 1.02 using 3.15 parts of a diazinon drug substance, Surfynol 104 (0.30 parts) and 1.55 parts of diethylene glycol dibutyl ether. A pesticide granule of the present invention was obtained in the same manner as in Example 17, except that a premix was obtained.

[0080]

Example 19 Pesticide granules As raw materials for an oil premix, 3.15 parts of a diazinon drug substance, Surfynol 104 (0.30 parts) and 1.55 parts of dipropylene glycol monopropyl ether
, A pesticide granule of the present invention was obtained in the same manner as in Example 17, except that an oil premix having a specific gravity of 1.03 was obtained.

[0081]

Example 20 Pesticide granule As an oil premix raw material, 3.15 parts of diazinon drug substance, Surfynol 104 (0.30 parts) and 1.55 parts of butyl lactate were used, and an oil preform having a specific gravity of 1.06 was used. A pesticide granule of the present invention was obtained in the same manner as in Example 17, except that a mix was obtained.

[0082]

Example 21 Pesticide Granules As raw materials for an oil premix, 3.15 parts of a diazinon drug substance, Surfynol 104 (0.30 parts) and 1.55 parts of N-methylpyrrolidone were used, and the specific gravity was 1.07.
Agrochemical granules of the present invention were obtained in the same manner as in Example 17, except that an oil premix having the following formula was obtained.

[0083]

Example 22 Throwing agent 150 g of the pesticide granules produced in Example 14 were packaged in Hythelon C-200 (PVA film, manufactured by Nichigo Film Co., Ltd.) to obtain a throwing agent of the present invention. These are thrown in at a rate of 20 packs per 10 ares of paddy fields.

[0084]

Example 23 Pesticide Granules (1) Granular Carrier 70.0 parts of sodium benzoate, 20.0 parts of SYB-5000 (manufactured by Neolite Kosan Co., Ltd., Shirasu Balloon) and AMICOL No. 3 L (enzyme-modified dextrin, manufactured by Nisseki Chemical Co., Ltd.) 10.0 parts were mixed, and the mixture was kneaded with 0.1% aqueous solution of sodium dioctyl sulfosuccinate 3
0 parts were added, kneaded with a kneader, extruded and granulated with a dome gran at a screen diameter of 1.2 mm, and dried at 60 ° C. using a midget dryer. The obtained dried particles were sized using a sieve having an opening diameter of 1.5 mm and 0.5 mm to obtain a granular carrier of the present invention. (2) Oil premix As raw materials, butachlor raw material 20.6 parts, EHDG
(Diethylene glycol mono 2 manufactured by Japan Emulsifier Co., Ltd.
-Ethylhexyl ether) 0.5 part, Newcol 2
609 (manufactured by Nippon Emulsifier Co., Ltd., polyoxyethylene tristyryl phenyl ether) 0.3 part, DBC (manufactured by Nippon Emulsifier Co., Ltd., mixture of 70% calcium dodecylbenzenesulfonate and methanol 30%) and Surfynol 1.0 E of 104E (a mixture of 50% acetylene diol and 50% ethylene glycol, manufactured by Air Products Co., Ltd.) was mixed to obtain an oil premix having a specific gravity of 1.07. (3) Pesticide granules 27.3 parts of the oil premix obtained in (2) is absorbed into 77.3 parts of the granular carrier obtained in (1) to obtain granules of the present invention containing 18% of butachlor. Was.

[0085]

Example 24 Throwing agent 50 g of each of the pesticide granules produced in Example 23 was packaged in Hythelon C-200 to obtain the throwing agent of the present invention. These are thrown in at a rate of 10 packs per 10 ares of paddy fields.

[0086]

Example 25 Pesticide granules (1) Granular carrier 80.0 parts of sodium benzoate, cork (particle size: 0.
2 mm to 0.5 mm) 10.0 parts and AMICOL No.
3L 10.0 parts were mixed, and 30 parts of 0.1% aqueous solution of sodium dioctylsulfosuccinate was added as kneading water, kneaded with a kneader, and a screen diameter of 1.2 m with Dome Gran.
m, extruded and granulated, and dried at a blowing temperature of 60 ° C. using a midget dryer. The obtained dried granules are passed through an opening of 1.5
The particles were sized using sieves of 0.5 mm and 0.5 mm to obtain the granular carrier of the present invention. (2) Oil premix 9.5 parts of pretilachlor as a raw material, EHDG
0.5 parts, New Call 2609 (0.3 parts), DBC
0.3 part and 1.0 part of Surfynol 104E were mixed to obtain an oil premix having a specific gravity of 1.07. (3) Pesticide granules The granules of the present invention containing 9.45% of pretilachlor, in which 88.4 parts of the granular carrier obtained in (1) is absorbed with 11.6 parts of the oil premix obtained in (2). I got

[0087]

Example 26 Throwing agent 50 g of the pesticide granules produced in Example 25 were packaged in Hythelon C-200 to obtain the throwing agent of the present invention. These are thrown in at a rate of 10 packs per 10 ares of paddy fields.

[0088]

Comparative Example 1 Pesticide Granules Example 1 except that 40 parts of potassium chloride, 2 parts of enzyme-modified dextrin, 2 parts of white carbon, 5 parts of bentonite and 51 parts of talc were used as raw materials for the granular carrier.
In the same manner as in Example 4, pesticide granules were obtained.

[0089]

Comparative Example 2 Pesticide Granules Pesticide granules were obtained in the same manner as in Example 14 except that 98 parts of potassium chloride, 0.5 part of xanthan gum and 1.5 parts of sodium polyacrylate were used as raw materials for the granular carrier. Was.

[0090]

Comparative Example 3 Casting Agent 150 g of each of the pesticide granules produced in Comparative Example 1 was packaged in Hythelon C-200 (manufactured by Nichigo Film Co., Ltd., PVA film) to obtain a casting agent. The cycloprothrin content in this formulation is the same as in Example 24.

[0091]

[Test Example 1] Water surface levitation rate of active pesticide components 300 ml of 3rd hard water was placed in a 300 ml screw-cap glass bottle having an inner diameter of 6 cm and a height of 10.6 cm.
3 or 10 mg of pesticide granules produced according to Comparative Examples 1 to 6
Was uniformly charged, and allowed to stand at room temperature for 1 hour. Then, gently add 20 ml of ethyl acetate to the water surface, gently stir with a glass rod, and collect 2 ml of the ethyl acetate layer with a whole pipette.
The amount of the active pesticide dissolved in the ethyl acetate layer was measured by high performance liquid chromatography, and the water surface levitation rate was calculated by the following equation. Table 1 shows the results.

[0092]

## EQU2 ## Water surface levitation rate (%) = (Ethyl acetate layer 2 collected)
Amount of pesticide active ingredient dissolved in 0 ml) ÷ (amount of pesticide active ingredient contained in 10 mg of pesticide granule) × 100

[0093]

[Table 1] Water surface levitation rate of active agricultural chemicals ─────────────────────────────────── Test granules Oil Premix specific gravity Water surface ascent rate (%) ─────────────────────────────────── Example 1 1.21 45 Example 2 1.21 58 Example 3 1.21 66 Example 4 1.21 70 Example 5 1.21 81 Example 6 1.21 82 Example 7 1.21 95 Example 8 1.21 76 Example 9 1.21 79 Example 10 1.21 76 Example 11 1.21 82 Example 12 1.21 85 Example 13 1.21 83 Example 14 1.02 88 Example 15 1.02 83 Example 16 1.02 80 Example 17 1.04 66 Example 18 1.02 63 Example 19 1.03 66 Example 20 1.06 54 Example 21 1.07 48 Example 23 1.07 93 Example 25 1.07 95 ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ Comparative Example 1 1.02 12 Comparative Example 2 1.02 17 ──────────オ イ ル Oil containing pesticidal active ingredient because of low water surface floating rate of pesticidal active ingredient of Comparative Examples 1 and 2 Even when the specific gravity of the premix is 1.02, which is close to 1, when the pesticide granule is produced using a normal solid carrier that is not a water-soluble organic acid salt, the pesticidal active ingredient or a liquid containing the pesticide floats on the water surface. I found it difficult. In contrast, the pesticide granules of the present invention exhibited excellent water surface floating rates.

[0094]

Test Example 2 Pest control effect on rice water weevil In a paddy field of 30 ares (100 m × 30 m) in one section, 14 days after planting, the throwing agents produced in Example 22 and Comparative Example 3 were divided and thrown in (150 g each).
× 60-packing), the pesticide granules produced according to Example 14 and Comparative Example 1 were sprayed on the granule frame (processing width: 5 m, 9 kg each) and uniformly sprayed on the granules (9 kg each). Ten days later, the number of rice water weevil in three rice plants at the survey point was investigated. Table 2 shows the survey results. FIG. 1 shows the outline of the processing points and the survey points.

[0095]

[Table 2] Control effect on rice water weevil ─────────────────────────────────── Test preparation Application method Number of rice water weevil / 3 rice plants 調査 Survey points ◎ ────────────────── ───────────────── Example 22 Separation and throwing application 0 0 0 0 0 0 0 0 0 0 0 0 Example 14 Spraying granule frame 0 0 0 0 0 1 0 0 0 0 0 Example 14 Uniform application of granules 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 Comparative Example 1 Granule frame application 3 2 2 1 8 2 3 2 3 Comparative Example 1 Granule uniform application 1 3 2 6 4 1 2 2 3 ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ No processing 4 8 5 2 3 6 9 4 4 4農 The pesticide granule and the throwing agent of the present invention exhibited an excellent control effect.

[0096]

Test Example 3 Herbicidal Effect in Paddy Field In a paddy field of 30 ares (100 mx 30 m) per section, three days after planting, the throwing agent produced in Examples 24 and 26 was applied in 15 packs from the long ridge of the paddy field (both sides). Long ridges (total 30 packs) were thrown in, and 20 days after the treatment, the herbicidal effect was examined at a position 5 m from both long ridges and at the center line. Weeds were hardly observed at any of the survey points, showing the maximum herbicidal effect. The phytotoxicity to rice was examined at the point where the pack was dropped and at the point where it was downwind at the time of treatment, but no phytotoxicity to rice was found in any of the plots.

[0097]

The pesticide granules for water application according to the present invention can be used as pesticides for water application. Also, the pesticide granules for water application of the present invention have a high water surface floating rate of the pesticide active ingredient,
Releases the required amount of the pesticide active ingredient at the required time, prevents the pesticide active ingredient from being unevenly distributed near the grains due to soil adsorption, shows excellent activity of the pesticide active ingredient, and reduces the risk of harm. Can be reduced. Furthermore, the pesticide granules for water application according to the present invention float a pesticide active ingredient or a liquid containing the same on the water surface by containing a solid organic acid salt, and do not require a large amount of a solvent, and do not require an agrochemical formulation. It is possible to contribute to weight reduction and weight reduction.

Further, the granular carrier of the present invention can be used for producing the above-mentioned pesticide granules to be applied to the water surface, in which the water surface floating rate of the pesticidal active ingredient is improved.

[Brief description of the drawings]

FIG. 1 shows a treatment point and an investigation point of pesticide granules when the pesticide granules are thrown and applied.

FIG. 2 shows a treatment point and an investigation point of a pesticide granule when the pesticide granule is sprayed in a picture frame.

FIG. 3 shows a treatment point and an investigation point of the pesticide granule when the pesticide granule is uniformly sprayed.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kiyoko Tanaka 1041 Yasu-cho, Yasu-cho, Yasu-gun, Shiga Prefecture In-house (72) Kenji Yasui 1041 Yasu-cho, Yasu-cho, Yasu-gun, Shiga Prefecture In-house Sankyo

Claims (21)

[Claims] (1) A granular carrier for producing a water-applied pesticide granule containing a water-soluble solid organic acid salt, wherein the pesticidal active ingredient has an improved surface floating rate. 2. The water-soluble solid organic acid salt is an alkali metal salt, an alkaline earth metal salt or an organic acid salt of an organic acid selected from aromatic carboxylic acids, aliphatic carboxylic acids and aromatic sulfonic acids.
The granular carrier according to claim 1, which is a quaternary ammonium salt. 3. A water-soluble solid organic acid salt having a molecular weight of 50 to 3
3. The granular carrier according to claim 2, wherein the carrier is 50. 4. A water-soluble solid organic acid salt having a molecular weight of 80 to 2
3. The particulate carrier according to claim 2, wherein the carrier is 00. 5. The water-soluble solid organic acid salt is sodium benzoate, potassium benzoate, potassium sorbate, sodium sorbate, calcium propionate, sodium propionate, potassium propionate, sodium toluene sulfonate or potassium toluene sulfonate. Is,
A granular carrier according to claim 2. 6. The granular carrier according to claim 2, wherein the water-soluble solid organic acid salt is sodium benzoate. 7. The granular carrier according to claim 1, wherein the compounding amount of the water-soluble solid organic acid salt is 25 to 100% in the granular carrier. 8. The granular carrier according to claim 1, wherein the amount of the water-soluble solid organic acid salt is 30 to 100% in the granular carrier. 9. The granular carrier according to claim 1, wherein the content of the water-soluble solid organic acid salt is 40 to 100% in the granular carrier. 10. A granular carrier comprising the particulate carrier according to claim 1 and a binder having a higher water dissolution rate than the water-soluble solid organic acid salt. 11. A specific gravity of 1.01 containing the granular carrier or the water-soluble solid organic acid salt according to any one of claims 1 to 10 and a poorly water-soluble pesticidal active ingredient (excluding cyhalofop butyl). Containing the above liquid,
A water-applied pesticide granule having an improved water surface floating rate of an active pesticide. 12. The active ingredient having poor solubility in water, wherein the active ingredient has a solubility in water of less than 30 ppm.
2. The pesticide granule for water application according to item 1. 13. The pesticide granules for water application according to claim 11, wherein the amount of the pesticide active ingredient is 0.5 to 50% based on the pesticide granules. 14. The pesticide granule for water application according to claim 11, wherein the content of the pesticidal active ingredient is 1 to 30% based on the pesticide granule. 15. A pesticide granule for water application, wherein the granule for water application according to any one of claims 11 to 14 contains a water surface spreader. 16. The pesticide granules for water application according to any one of claims 11 to 15, wherein the granules are selected from cork, foamed shirasu, foamed pumice, foamed pearlite, foamed synthetic resin, synthetic resin powder and plastic hollow body. A water-applied pesticide granule containing one or more buoyant bulking agents. 17. The granular carrier according to any one of claims 1 to 10, wherein the granular carrier comprises one or two selected from cork, expanded shirasu, expanded pumice, expanded pearlite, expanded synthetic resin, synthetic resin powder, and plastic hollow body. Granular carrier containing more than one buoyant bulking agent. 18. The aqueous pesticide granule according to any one of claims 11 to 16, wherein the granular carrier containing a water-soluble solid organic acid salt prepared in advance absorbs a liquid pesticidal active ingredient or an oil premix. Production method. 19. A method for spraying the pesticide granules for water application according to any one of claims 11 to 16 directly as a pesticide in rice paddies. 20. A method for spraying the pesticide granules for water application according to any one of claims 11 to 16 from a container provided with a transfer port directly into a paddy field. 21. A method of throwing the pesticide granules for water application according to any one of claims 11 to 16 from a ridge or the like as a package on water-soluble paper.