JPH11315004A - Formulation for water surface application - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a preparation for water surface application capable of evenly spreading an agrochemical active ingredient to the surface of the whole paddy water, having controlled elution. SOLUTION: This agrochemical preparation for water surface application is obtained by supporting and coating a granular composition comprising a slightly water-soluble agrochemical active ingredient, a dialkyl succinate and a ligninsulfonate with a granule nucleus of baked pumice having <1 apparent specific gravity and about 50 μm to about 1,400 μm particle diameter by using a mixture of a vegetable oil and a surfactant and controls elution of the agrochemical active ingredient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a preparation for water application. More specifically, the present invention relates to a water-applied pesticide formulation having excellent floating traveling properties, which is controlled in dissolution, a method for producing the same, and an agricultural chemical powder composition in which dissolution is controlled.

[0002]

2. Description of the Related Art Granules, powders, wettable powders, flowables, aqueous solvents, liquids, emulsions, and the like have been known as pharmaceutical forms for spraying agricultural chemicals. , Tablets (jumbo) and packs have also been developed.

On the other hand, in the field of agriculture, the tendency to further reduce labor and reduce the use of agrochemicals due to environmental considerations when using agrochemicals is increasing, and there is a need to improve the formulation of agricultural chemicals.

[0004] Under such circumstances, in recent years, preparations for mechanical application and large-scale throwing have been developed with a small amount of granule applied (from 30 kg / ha application to 10 kg / ha application). The large-sized preparation for throwing is a preparation intended to uniformly distribute the pesticidal active ingredient in the paddy water by throwing from the shore without entering the paddy field. Specifically, 100 g or 50 g tablets, balls, individual packaging, and the like, which facilitate the dispersion of the pesticidal active ingredient in paddy water using a water-soluble excipient or a foaming agent, have been tested.

[0005] However, when compared to ordinary granules,
Because it is extremely topically applied, it actually takes a long time for the pesticidal active ingredient to be evenly dispersed in the surface water,
Alternatively, the pesticidal active ingredient may not spread throughout the paddy water. As a result, the effect becomes uneven or phytotoxicity occurs.

The large throw-in preparations proposed for labor saving as described above have the problem that it is difficult to distribute the pesticidal active ingredient promptly and uniformly in paddy water, which solves the problem. Is required.

In order to solve these problems, Japanese Patent Laid-Open Publication No.
No. 155703 proposes a water-applied pesticide formulation. However, in this water-applied pesticide formulation, depending on the surfactant used, there is one that does not spread sufficiently on the surface of the rice field and sinks in the place where it is sprayed, and also has a large bulk, which causes problems in processing, distribution, etc. Could be.

[0008] In addition, in the case of a water-applied pesticide preparation having good floating running properties, there is a problem in controlling elution of the pesticide active ingredient from the viewpoints of chemical damage and biological effects. And, in the pesticide active ingredient, there is a water-soluble one that is relatively easily soluble in water and a water-insoluble one that is relatively insoluble, and as a method of controlling the dissolution thereof, in the case of the water-soluble pesticide active ingredient, for example, JP-A-8-92007 discloses that the active ingredient is mixed with a water-insoluble substance or a poorly water-soluble substance having a melting point or softening point of 50 ° C. or more and less than 130 ° C. (for example, microcrystal wax) and white carbon. A bulk agricultural chemical composition has been proposed, but its dissolution inhibition is not sufficient, and its improvement is desired.

[0009]

Means for Solving the Problems In view of such a situation, the present inventors have made intensive studies and as a result, when a certain form of a preparation is applied, the preparation can effectively float the surface water. After running, they found that a uniform pesticide active substance could be distributed throughout the rice field water, and completed the present invention.

The water-applied preparation of the present invention makes it possible to control the dissolution of the pesticidal active ingredient, that is, in the case of a slightly water-soluble or water-soluble pesticidal active ingredient, the dissolution is suppressed, and In the case of a pesticidal active ingredient, elution is promoted.

Thus, the present invention relates to a powdery composition comprising a poorly water-soluble agrochemical active ingredient, a dialkyl sulfosuccinate salt and a lignin sulfonate, having an apparent specific gravity of less than 1 and in the range of about 500 μm to about 1400 μm. A water-borne pesticide having a good floating traveling property having an action of promoting the dissolution of a pesticide active ingredient, characterized in that the grain nucleus of calcined pumice having a particle size of ??? is coated and supported with a mixture of a vegetable oil and a surfactant. To provide a formulation.

The present invention further provides a powdery composition comprising a poorly water-soluble pesticidal active ingredient, a dialkylsulfosuccinate salt and a ligninsulfonate, a water-soluble or water-soluble pesticidal active ingredient, polyethylene and a hydrophobic compound. A mixed composition with an agrochemical bulk powder composition composed of silica, having an apparent specific gravity of 1
Less than about 500 μm to about 1400 μm in particle diameter of calcined pumice stone, and coated with a mixture of vegetable oil and a surfactant to carry and coat the core. Provide mixed pesticide formulation for water application.

The raw agricultural chemical composition comprising the water-soluble or water-soluble agricultural chemical active ingredient, polyethylene and hydrophobic silica, which constitutes the above-mentioned water-applied mixed agricultural chemical preparation, is a novel composition not described in any literature. . The bulk agricultural chemical composition is a useful one that can be widely used as a basic component of a solid preparation.

The pesticidal bulk composition may further contain liquid paraffin, and when the pesticidal active ingredient is a solid,
The addition of liquid paraffin lowers its melting temperature (90-110 ° C.), makes it applicable to bulk powder compositions containing heat-labile agrochemical active ingredients, and reduces the cost of formulation. Can be reduced.

When the water-applied pesticide formulation of the present invention is applied to a paddy field, the formulation may have various effects on the water surface with the dissolution of the dialkyl sulfosuccinate salt, lignin sulfonate salt and any alkyl naphthalene sulfonate salt that may be present. Direction, so that the particles are dispersed very rapidly and uniformly in the paddy water, and the emulsification of the vegetable oil promotes the elution of the poorly soluble hardly water-soluble agrochemical active ingredient, and with the running of the formulation In addition, the pesticidal active ingredient is also uniformly dispersed in the surface water.

When the mixed pesticide preparation for water application according to the present invention is applied to a paddy field, the water-soluble or water-soluble pesticidal active ingredient has, in addition to the above-mentioned effects, a dissolution inhibiting effect of polyethylene and hydrophobic silica. By receiving the compound, it exerts an excellent residual effect due to the sustained release effect, and can also exhibit an effect of preventing the occurrence of phytotoxicity.

As described above, according to the pesticide formulation for surface application and the mixed pesticide formulation for surface application of the present invention, by controlling the dissolution of the pesticidal active ingredient, the components whose dissolution is to be accelerated and those whose dissolution is to be delayed are respectively released at the optimal dissolution rate. can do.

Furthermore, by preparing a granule using the raw agricultural chemical composition, a granule with controlled elution can be obtained.

Hereinafter, the pesticide formulation for water application, the mixed pesticide formulation for water application, the bulk pesticide composition and the pesticide granules comprising the same of the present invention will be described in more detail. In the following, the water-applied pesticide formulation and the water-applied mixed pesticide formulation may be collectively referred to as “water-applied formulation”.

The grain nucleus used as a carrier in the water-applied agrochemical preparation of the present invention has an apparent specific gravity of less than 1, for example, 0.7 to 0.15 and about 500 μm to about 1400.
μm, preferably calcined pumice having a particle size in the range of about 500 μm to about 1000 μm. The grain nucleus having such a particle size is, for example, using a standard sifter of the JIS standard,
It can be prepared by removing particles larger than the upper limit and particles smaller than the lower limit of the above particle size range.

As a specific example of the calcined pumice, for example, a shirasu balloon can be mentioned. The dialkyl sulfosuccinate salt and lignin sulfonate used in the water surface application preparation of the present invention change the air-water interfacial tension, and simultaneously release the pesticide active ingredient into the surface water while the granules travel on the surface water. Has the effect of causing.

In the preparation for surface application according to the present invention, a substance having an ability to further change the interfacial tension of air-water can be optionally added, and such a substance may be added to water at a critical micelle concentration (cmc). Substances capable of reducing the surface tension of water by 30% or more when added are preferable, for example, alkyl benzene sulfonate, alkyl naphthalene sulfonate, alkyl sulfate, alkyl phosphate, polyoxyethylene alkyl ether,
Glycerin fatty acid ester, sorbitan fatty acid ester, naphthalene sulfonate formalin condensate, alkyl ammonium salt, alkyl amine salt, alkyl glycine salt, alanine salt, silicone polyether-based activator, alkyl aryl sulfonate, alkyl sulfate salt, etc. be able to. It is desirable that these are generally in the form of a solid powder at room temperature.

In particular, the alkylnaphthalenesulfonate has an effect of facilitating the peeling of the pesticidal active ingredient carried on the grain nucleus made of calcined pumice in water.

The mixing ratio of the dialkyl sulfosuccinate salt and the lignin sulfonate used in the water-applied preparation of the present invention is as follows.
The lignin sulfonate is used in an amount of 1 to 15 parts by weight, preferably 2 to 8 parts by weight, and more preferably 1 part by weight of the dialkyl sulfosuccinate salt with respect to 1 part by weight of the alkyl naphthalene sulfonate. Can be mixed at a ratio of 0.5 to 3 parts by weight, preferably 1 to 2 parts by weight.

In the water-applied preparation of the present invention, specific examples of the vegetable oil used for coating and supporting the composition containing the pesticidally active ingredient on the grain nucleus include, for example, soybean oil, linseed oil, cottonseed oil, rapeseed oil, rice bran oil , Corn oil, palm oil,
Olive oil and the like can be mentioned, preferably soybean oil, cottonseed oil, rapeseed oil and corn oil, particularly preferably soybean oil and corn oil.

The above vegetable oils can be used alone or in combination of two or more.

The preparation for water application according to the present invention can be used, if necessary,
An antioxidant may be contained for preventing oxidation of vegetable oil. Specific examples thereof include, for example, 2,6-di-te
rt-butyl-4-methylphenol (BHT), te
rt-butylhydroxyanisole (BHA), dl-
α-tocopherol and the like can be mentioned.

In the preparation for water application according to the present invention, anionic surfactants and nonionic surfactants can be mentioned as surfactants used when the pesticidal active ingredient is supported and coated on the grain nucleus. As anionic surfactants, for example, dialkyl sulfosuccinates and the like can be mentioned, and as nonionic surfactants, for example, polyoxyalkylene nonylphenyl ether, polyoxyethylene castor oil, polyoxy Ethylene hydrogenated castor oil, fatty acid polyglyceride, polyoxyethylene tristyryl phenyl ether, sorbitan fatty acid ester, glycerin fatty acid ester, sucrose fatty acid ester, propylene glycol fatty acid ester, etc. Oil, fatty acid polyoxyethylene alkylaryl phosphoric polyoxyethylene tristyryl phenyl ether, and sucrose fatty acid esters are preferred. Particularly preferred are polyoxyethylene hydrogenated castor oil, fatty acid polyglyceride and polyoxyethylene tristyryl phenyl ether. The above-mentioned surfactants may be used alone or in combination of two or more.

In the water-applied preparation of the present invention, in order to carry and coat the composition containing the pesticidal active ingredient on the grain nucleus,
A mixture consisting of the vegetable oil and the surfactant as described above is used, and if necessary, paraffin waxes, glycerin esters, animal fats and oils, butadiene, and the like can be further added to the mixture.

The poorly water-soluble pesticide active ingredient used in the water-applied preparation of the present invention is a substance having a water solubility of 10 ppm or less at 20 ° C. and has an activity as a pesticide such as herbicidal activity, insecticidal activity, and bactericidal activity. Substances having the same. Specific examples thereof include the following compounds, but the poorly water-soluble agrochemical active ingredients that can be used in the present invention are not limited to these.

Herbicidally active compound : 2-benzothiazole
2-yloxy-N-methylacetanilide (generic name:
Mefenacet), 1- (2-chlorophenyl) -4-
(N-cyclohexyl-N-ethylcarbamoyl) -5
(4H) -tetrazolinone (generic name: fentrazamide), 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (generic name: Daimulon), N-[(2-chlorophenyl) methyl] -N′- (1-methyl-1-phenylethyl) urea (generic name: cumyluron), (R
S) -2-Bromo-N- (α, α-dimethylbenzyl)
-3,3-dimethylbutylamide (generic name: bromobutide), α- (2-naphthoxy) propionanilide (generic name: naproanilide), (RS) -2- (2,4-dichloro-m-tolyloxy) propionanilide (Generic name: clomeprop), 2-chloro-N- (3-methoxy-2-thenyl) -2 ', 6'-dimethylacetanilide (generic name: tenylchlor), S-benzyl-1,2
-Dimethylpropyl (ethyl) thiocarbamate (generic name: esprocarb), O-3-tert-butylphenyl-6-methoxy-2-pyridyl (methyl) thioca-
Bamate (generic name: pyributicarb), n-butyl (R) -2- [4 (4-cyano-2-fluorophenoxy) phenoxy] propionate (generic name: cyhalofop-butyl), 1- (diethylcarbamoyl) -3-
(2,4,6-trimethylphenylsulfonyl) -1,
2,4-triazole (generic name: cafentrol), 4- (2,4-dichlorobenzoyl) -1,3-
Dimethyl-5-pyrazolyl-p-toluenesulfonate (generic name: pyrazolate), 2- [4- (2,4-dichlorobenzoyl) -1,3-dimethylpyrazole-5
Iloxy] acetophenone (generic name: pyrazoxifene), 2- [4- (2,4-dichloro-m-toluoyl) -1,3-dimethylpyrazol-5-yloxy]
-4-methylacetophenone (generic name: benzophenap), methyl 2-[(4,6-dimethoxy-2-pyrimidinyl) oxy] -6- [1- (methoxyimino) ethyl] -benzoate (generic name: pyri Minovac methyl), O-ethyl-O- (3-methyl-6-nitrophenyl) secondary butyl phosphoramidothioate (generic name: butamiphos), N- (2,3-dichlorophenyl) -4- (ethoxymethoxy) ) -Benzamide (generic name: etobenzanide), 5- (2,4-dichlorophenoxy) -2-nitrobenzoic acid (generic name: bifenox), and the like.

Insecticidally active compounds : ethyl dimethyldithiophosphorylphenylacetate (generic name: fentoate),
O, O-diethyl-O- (3-oxo-2-phenyl-
2H-pyridazin-6-yl) phosphorothioate (generic name: pyridafenthion), O, O-dimethyl-O-
3,5,6-trichloro-2-pyridyl phosphorothioate (generic name: chlorpyrifosmethyl), 2- (4-ethoxyphenyl) -2-methylpropyl 3-phenoxybenzyl ether (generic name: etofenprox), (±) -5-amino-1- (2,6-dichloro-
α, α, α-trifluoro-p-tolyl) -4-trifluoromethyl-sulfinylpyrazole-3- (carbonitrile) (generic name: fipronil), 2,3-dihydro-2,2-dimethyl-7- Benzo [b] furanyl N
-Dibutylaminothio-N-methylcarbamate (generic name: carbosulfan), ethyl N- [2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl (methyl) aminothio] -N-isopropyl- β-alaninate (generic name: benfracarb), butyl 2,3-dihydro-2,2-dimethylbenzofuran-7-yl N, N′-dimethyl-N, N′-thiodicarbamate (generic name: furatiocarb), ( RS) -α
-Cyano-3-phenoxybenzyl-2,2-dichloro-1- (4-ethoxyphenyl) cyclopropanecarboxylate (generic name: cycloprothrin), 2-tert-butylimino-3-isopropyl-5-phenyl- 3,4,5,6-tetrahydro-2H-1,3,5-
Thiadiazin-4-one (generic name: buprofezin),
S, S'-2-dimethylaminotrimethylene di (benzenethiosulfonate) (generic name: bensultap),
etc.

Fungicidal compounds : 1- (4-chlorobenzyl) -1-cyclopentyl-3-phenylurea (generic name: pencyclone), 4,5,6,7-tetrachlorophthalide (generic name: fusalide), α, α, α-trifluoro-3′-isopropoxy-o-toluanilide (generic name: flutranyl), 6- (3,5-dichloro-4-methylphenyl) -3 (2H) -pyridazinone (generic name:
Diclomedin), (E) -methyl 2-[[6- (2-
Cyanophenoxy) -4-pyrimidinyl] oxy] -α
-(Methoxymethylene) benzene acetate (generic name:
Azoxystrobin), N- [2,6-dibromo-4-
(Trifluoromethoxy) phenyl] -2-methyl-4
-(Trifluoromethyl) -5-thiazolecarboxamide (generic name: thifluzamide), 2,2-dichloro-N
-[1- (4-chlorophenyl) ethyl] -1-ethyl-3-methylcyclopropanecarboxamide (generic name:
Carpropamide), 2-cyano-N- [1- (2,4-
Dichlorophenyl) ethyl] -3,3-dimethyl-butanamide (generic name: diclosimet), S-methyl
1,2,3-benzothiadiazole-7-carbothioate (generic name: acibenzolar-S-methyl), and the like.

In the water-applied preparation of the present invention, the above-mentioned pesticidal active ingredients can be used alone or in combination of two or more.

In the preparation for surface application of the present invention, a bulking agent can be further blended. The type of the bulking agent that can be used is not particularly limited as long as it is easily soluble in water. , Potassium sulfate, potassium chloride,
Sugars, polyethylene glycol and the like,
Sodium sulfate is preferred. By adding such a water-soluble extender, the amount of calcined pumice of the grain nucleus can be reduced, and a preparation having a small bulk volume can be obtained.

In the water-applied pesticide formulation of the present invention, the powdery composition supported on the grain nucleus includes the above-mentioned poorly water-soluble pesticidal active ingredient, dialkyl sulfosuccinate salt and lignin sulfonate, and other additives. Can be prepared by mixing and pulverizing, and a dry pulverizing method known per se can be employed for the preparation. That is, a desired powdery composition can be obtained by charging and mixing and pulverizing each component of the powdery composition in a pin mill, a hammer mill, a jet mill or the like.

The water-applied pesticide formulation of the present invention comprises
For example, about 0.05 part by weight to about 50 parts by weight, preferably about 1.0 part by weight to about 30 parts by weight of a poorly water-soluble agrochemical active ingredient per 0 parts by weight; dialkyl sulfosuccinate salt and lignin sulfonate And about 0.5% of a mixture thereof to which alkylnaphthalene sulfonate is added.
Parts by weight to about 25 parts by weight, preferably about 5 parts by weight to about 15 parts by weight
1 part by weight to about 20 parts by weight, preferably about 5 parts by weight to about 18 parts by weight; about 0.5 parts by weight to about 10 parts by weight, preferably about 1 part by weight of a surfactant. About 8 parts by weight; 0 to about 40 parts by weight of a water-soluble extender, preferably 0 to about 25 parts by weight; and about 10 to about 80 parts by weight, preferably about 30 parts by weight of calcined pumice. ~ About 74
It can be contained in a ratio of parts by weight. However, this mixing ratio is only a rough guide, and can be appropriately changed as needed.

On the other hand, the polyethylene used in the bulk pesticide composition constituting the mixed pesticide composition for water application according to the present invention together with the powdery composition is polyethylene having a low molecular weight, and the molecular weight is generally 1,000 to 15, 000, preferably in the range of 1,300 to 7,000. The content of the polyethylene in the bulk pesticide composition is usually about 10 to about 60% by weight, preferably about 20% by weight.
To about 50% by weight. In some cases, paraffin waxes can be added to polyethylene.

The raw agricultural chemical composition of the present invention contains, as a solid diluent, hydrophobic silica having characteristics of low water adsorption and low silanol group density. The content of the hydrophobic silica in the bulk agricultural chemical composition can be generally about 10 to about 80% by weight, preferably about 13 to about 75% by weight. The bulk pesticide composition may further contain about 5 to about 40% by weight of talc and / or about 5 to about 40% by weight of white carbon as a solid diluent.

In the bulk composition of the present invention, in addition to polyethylene and hydrophobic silica, liquid paraffin can be further added, and liquid paraffin is used to remove a relatively light lubricating oil fraction such as a spindle oil fraction. It is a hydrocarbon oil highly purified by washing with sulfuric acid, colorless and odorless, has low volatility, is mainly composed of alkyl naphthenes, and is also called white oil (white oil). The content of the liquid paraffin in the raw agricultural chemical composition can be generally about 5 to about 40% by weight, preferably about 10 to about 30% by weight.

The water-soluble or water-soluble pesticidal active ingredient used in the above pesticidal bulk powder composition has a water solubility at 20 ° C. of more than 10 ppm, preferably 13 ppm.
Examples of the above substances include substances having herbicidal activity, insecticidal activity, bactericidal activity, and the like, and specific examples thereof include the following compounds. However, the water-soluble agrochemical active ingredient in the present invention is not limited to these.

Herbicidally active compound : methyl α- (4,6-
Dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -o-toluate (generic name: bensulfuronmethyl), ethyl 5- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -1-methylpyrazole-4 -Carboxylate (generic name: pyrazosulfuronethyl), 1- (2-chloroimidazo [1,2
-A] pyridin-3-ylsulfonyl) -3- (4,6
-Dimethoxypyrimidin-2-yl) urea (generic name: imazosulfuron), methyl 3- (4-methoxy-6-
Methyl-1,3,5-triazin-2-ylcarbamoylsulfamoyl) -2-thenoate (generic name: thifensulcuronmethyl), methyl 2- [3- (4-methoxy-6-methyl-1, 3,5-Triazin-2-yl) ureidosulfonyl] benzoate (general name: metsulfuronmethyl), 1- (4,6-dimethoxypyrimidin-2-yl) -3- (3-trifluoromethyl-2
-Pyridylsulfonyl) urea (generic name: furazasulfuron), 3-chloro-5- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -1-methylpyrazole-4-carboxylic acid (generic name) : Halosulfuron), 1- (4,6-dimethoxy-)
1,3,5-triazin-2-yl) -3- [2- (2
-Methoxyethoxy) phenylsulfonyl] urea (generic name: sinosulfuron), 1- (2-chlorophenylsulfonyl) -3- (4-methoxy-6-methyl-1,
3,5-triazin-2-yl) urea (general name: chlorsulfuron), 1- (4,6-dimethoxypyrimidin-2-yl) -3- [1-methyl-4- (2-methyl-
2H-tetrazol-5-yl) -pyrazol-5-ylsulfonyl] urea (generic name: azimsulfuron),
1-[[o- (cyclopropylcarbonyl) phenylsulfamoyl-3- (4,6-dimethoxy-2-pyrimidinyl) urea (generic name: cyclosulfamuron);
2,4-dichlorophenoxyacetic acid (generic name: 2,4-
D), 2-methyl-4-chlorophenoxybutyric acid (generic name: MCPB), 2-methylthio-4,6-bis (ethylamino) -s-triazine (generic name: simethrin),
2-methylthio-4-ethylamino-6- (1,2-dimethylpropylamino) -s-triazine (generic name: dimethamethrin), S- (4-chlorobenzyl) -N, N
-Diethylthiocarbamate (generic name: benthiocarb), S-1-methyl-1-phenylethyl piperidine-1-carbothioate (generic name: dimepiperate), S-ethylhexahydro-1H-azepine-1-
Carbothioate (generic name: molinate), 2-chloro-2 ', 6'-diethyl-N- (butoxymethyl) acetanilide (generic name: butachlor), 2-chloro-
2 ', 6'-diethyl-N- (2-propoxyethyl)
Acetanilide (generic name: pretilachlor), S-
(2-methyl-1-piperidyl-carbonylmethyl)-
O, O-di-n-propyldithiophosphate (generic name: piperophos), O, O-diisopropyl-2- (benzenesulfonamido) ethyldithiophosphate (generic name: benslide), 2,3-dihydro-3, 3-dimethylbenzofuran-5-yl ethanesulfonate (generic name: benfresate), 3-isopropyl-2,
1,3-benzo-thiadiazinone- (4) -2,2-dioxide (generic name: bentazone), 2-amino-3-chloro-1,4-naphthoquinone (generic name: ACN), and the like.

Insecticidally active compound : 1- (6-chloro-3-
(Pyridylmethyl) -N-nitroimidazolidin-2-ylideneamine (generic name: imidacloprid), (E)-
N- (6-chloro-3-pyridylmethyl) -N-ethyl-N'-methyl-2-nitrovinylidenediamine (generic name: nitenpyram), 3- (6-chloro-3-pyridylmethyl) -2-cyano Iminothiazolidine (generic name: thiacloprid), 2-secondary butylphenyl-N
-Methyl carbamate (generic name: BPMC), 2-isopropylphenyl-N-methyl carbamate (generic name:
Isoprocarb), 1-naphthyl-N-methylcarbamate (general name: carbaryl), O, O-dimethyl-O-
(3-methyl-4-nitrophenyl) thiophosphate (generic name: phenthion), O, O-diethyl-S-2
-(Ethylthio) ethyl phosphorodithioate (generic name: ethylthiomethone), (2-isopropyl-4-methylpyrimidyl-6) -diethylthiophosphate (generic name: diazinon), O, O-dipropyl-O-
4-methylthiophenyl phosphate (general name: propaphos), 2-chloro-1- (2,4-dichlorophenyl) vinyldimethyl phosphate (general name: dimethylvinphos), and the like.

Fungicidal compounds : 1- (4-chlorophenoxy) -3,3-dimethyl-1- (1,2,4-triazol-1-yl) -2-butanone (generic name: triadimefon), diisopropyl 1 , 3-dithiolan-2-
Ylidene-malonate (generic name: isoprothiolane),
5-chloro-N- (1,3-dihydro-1,1,3-trimethyl-4-isobenzofuranyl) -1,3-dimethyl-1H-pyrazole-4-carboxamide (generic name:
Furametopyr), 3-allyloxy-1,2-benzisothiazole-1,1-dioxide (generic name: probenazole), 1,2,5,6-tetrahydropyrrolo [3,
2,1-ij] quinolin-4-one (generic name: pyroquilon) and the like.

The pesticidal raw material composition can contain the pesticidal active ingredient as described above alone or in combination of two or more kinds.

The content of the water-soluble pesticidal active ingredient in the pesticidal bulk powder composition is not particularly limited.
Generally, it may be about 1 to about 40% by weight, preferably about 5 to about 35% by weight.

As described above, the bulk pesticide composition of the present invention has the property of suppressing the dissolution of the pesticidal active ingredient by polyethylene and hydrophobic silica. The technique of the bulk agricultural chemical composition can also be widely applied to agrochemical active ingredients that are relatively insoluble in water and desired.

Examples of such pesticidal active ingredients include, in addition to the water-soluble or water-soluble pesticidal active ingredients exemplified above, poorly water-soluble pesticidal active ingredients such as fipronil, azoxystrobin and thifluzamide. Examples can be given.

The bulk pesticide composition in the mixed pesticide formulation for water application according to the present invention is obtained by mixing the above-mentioned water-soluble or water-soluble pesticide active ingredient, polyethylene and hydrophobic silica, and mixing the mixture with a Hensle mixer. The mixture can be prepared by uniformly mixing in a heated state (130 ° C. or lower) in an apparatus such as a Ladyge mixer or a pug mixer, and continuing stirring (mixing) until the temperature reaches room temperature. Examples of the method of returning to room temperature include a method of forced cooling by blowing air and the like, a natural cooling method, and the like, but are not limited thereto.

The mixed pesticide formulation for water application according to the present invention comprises a mixed composition of the powdery composition containing the poorly water-soluble pesticidal active ingredient and the bulk pesticide composition prepared as described above. As described above, manufactured by applying and coating a grain nucleus of calcined pumice having an apparent specific gravity of less than 1 and having a particle size in a range of about 500 μm to about 1400 μm using a mixture of a vegetable oil and a surfactant. Is done.

The water-applied agricultural chemical mixture according to the present invention comprises, for example, about 7 to about 12 parts by weight, preferably about 7.4 to about 11 parts by weight of a poorly water-soluble agricultural chemical active ingredient per 100 parts by weight of the formulation. Parts by weight: about 1 part to about 10 parts by weight, preferably about 2 parts to about 9 parts by weight of a mixture obtained by adding a dialkyl sulfosuccinate salt and a lignin sulfonate salt, and optionally an alkylnaphthalene sulfonate salt; 0.5 to about 4 parts by weight, preferably about 0.52 to about 3.5 parts by weight, of a water-soluble or water-soluble pesticide active ingredient; and about 1 to about 12 parts by weight of polyethylene. Parts, preferably about 1.5 parts to about 11 parts by weight; about 3 parts to about 8 parts by weight of hydrophobic silica, preferably about 3.3 parts.
About 8 parts by weight to about 17 parts by weight; preferably, about 9 parts by weight to about 16 parts by weight; about 1 part by weight to about 6 parts by weight, preferably about 1 part by weight of a surfactant. From about 0 to about 10 parts by weight, preferably from about 0 to about 9 parts by weight; and from about 35 to about 65 parts by weight of calcined pumice. Parts, preferably about 40
It can be contained in a proportion of from about 60 parts by weight to about 60 parts by weight.
However, the above mixing ratio is only a rough guide, and can be appropriately changed as needed.

The mixed pesticide formulation for water application according to the present invention may contain liquid paraffin. In this case, the liquid paraffin is added in an amount of about 1 part by weight to about 12 parts by weight, preferably about 2 parts by weight.
It can be contained in a proportion of from about 10 parts by weight to about 10 parts by weight.

In order to increase the efficiency of spraying, the water-applied preparation of the present invention may optionally contain the preparation in an amount of about 10 per package.
It can be a solid formulation packaged in a water-soluble film in a unit of about 200 g, preferably about 25 g to about 60 g.
The water-soluble film can have a ventilation hole through which a gas can pass, if necessary.

Examples of the constituent materials of the water-soluble film as the packaging material include water-soluble polyvinyl alcohol, carboxymethyl cellulose, dextrin, starch, and hydroxyethyl cellulose.

In addition, the preparation for water application according to the present invention is preferably
In a unit of about 200 g, put in a fixed mold and heat or /
It can also be compressed into large molded preparations. The shape may be a sphere, a disk, a column, a rectangular parallelepiped, a cube, or the like, but is not limited thereto.

In molding, the following binders can be used, but are not limited to: polyethylene glycol, saccharides, natural gum, polyvinyl alcohol, natural or synthetic rubber, natural or modified Cellulose and the like.

The pesticide preparation for water application according to the present invention has, for example, the above-mentioned apparent specific gravity of less than 1 and from about 500 μm to about 1 μm.
Calcined pumice having a particle size in the range of 400 μm is previously coated with a mixture of vegetable oil and surfactant, and the surface of the coated granule is coated with a poorly water-soluble agrochemical active ingredient, dialkyl sulfosuccinate salt and lignin sulfonate. It can be produced by supporting and coating a powdery composition further containing an alkylnaphthalene sulfonate in some cases.

The mixed pesticide formulation for water application containing both a poorly water-soluble pesticide active ingredient and a slightly water-soluble or water-soluble pesticide active ingredient is, for example, the above-mentioned water-poorly water-soluble water-soluble pesticide active ingredient. , A pesticidal bulk powder composition comprising polyethylene and hydrophobic silica is added to the above-mentioned powdery composition to form a mixture, and the mixture is carried on the particle nucleus surface coated with a mixture of vegetable oil and surfactant in the same manner as above. It can be manufactured by coating.

More specifically, for example, calcined pumice as described above as a grain nucleus is mixed with a standard sieve of 1400 μm and 500 μm.
The particle size is adjusted with a sieve according to a mesh opening of μm. The calcined pumice having the adjusted particle size is transferred to a pan coater, and a predetermined amount of a mixture of vegetable oil and a surfactant is dropped on the calcined pumice while the pan coater is operating, to sufficiently coat the calcined pumice. Then the previously prepared poorly water soluble pesticidal active ingredient, dialkyl sulfosuccinate salt and lignin sulfonate, and optionally further alkyl naphthalene sulfonate and / or
Alternatively, by gradually adding a powdery composition to which a water-soluble extender has been added, and sufficiently operating the pan coater until the powdery composition is substantially uniformly coated on the surface of the granular carrier, the target water-applied pesticide is obtained. A formulation can be manufactured.

Further, in the case of a mixed pesticide formulation for surface application containing both a poorly water-soluble pesticide active ingredient and a slightly water-soluble or water-soluble pesticide active ingredient, a slightly water-soluble or water-soluble pesticide active ingredient; It can be manufactured by adding the agrochemical bulk composition comprising polyethylene and hydrophobic silica to the above-mentioned powdery composition and operating in the same manner as above.

In preparing the water-applied preparation of the present invention, if the pesticidal active ingredient is in a liquid form, the pesticidal active ingredient is adsorbed on a carrier such as white carbon, talc, diatomaceous earth, or clay in advance, and then the dialkylsulphosulfate is added. It can also be mixed with a succinate salt and a lignin sulfonate to form a powdery composition.

When the water-applied preparation of the present invention is actually used, the preparation can be directly transferred into a paddy field from a box, bottle, bag, or the like provided with an appropriate outlet. Further, when processed into a solid preparation packaged in a water-soluble film, 2 to 40, preferably 5 to 20,
A sufficient effect can be exhibited by dropping the pieces. In any case, the drop interval does not need to be uniform, and a desired effect can be obtained by dropping at random intervals.

The bulk pesticide composition used in the water-applied mixed pesticide formulation of the present invention can be further used as a bulk composition for various formulations. Examples of the formulation form include powders, tablets, granules, and seed coating agents, and are usually granules (particle size: 0.3 to 1.7 m).
m) is preferred. These preparations can be manufactured by a method known per se. The method is carried out, for example, by mixing the bulk agricultural chemical composition with a solid diluent or carrier, and, if necessary, a surfactant. Examples of the method for producing granules include an extrusion granulation method, a coating method, a tumbling granulation method, a compression granulation method, a fluidized granulation method, and a stirring granulation method. Preferably, an extrusion granulation method and a coating method can be used. Examples of solid diluents for extrusion granulation include soil natural minerals (eg, kaolin, clay, talc, chalk, attapull guide, montmorillonite or diatomaceous earth), synthetic minerals (eg, highly dispersed silicon dioxide, alumina, silicate) Etc.). Examples of solid carriers for coating granulation include, for example, crushed and fractionated rocks (eg, quartz sand, calcite, marble, pumice, sepiolite, dolomite, etc.), synthetic particles of inorganic and organic powders, and organic substances (eg, , Cob and coconut, corn cob and tobacco stem).

As additives for further improving the performance and production efficiency of the granules, nonionic and anionic surfactants [eg, polyoxyethylene fatty acid esters, polyoxyethylene fatty acid alcohol ethers (eg, alkylaryl polyglycols)] Ether, alkyl sulfonate, alkyl sulfate, aryl sulfonate)], lignin sulfonic acid, alkyl benzene sulfonic acid, dialkyl sulfosuccinate salt, polyoxyalkylene alkyl phenyl ether sulfonate salt, albumin hydrolyzate, etc. can do. Pastes can also be used in the formulation (granules). Examples of the paste include carboxymethylcellulose, dextrin, modified dextrin, and natural and synthetic polymers (for example, gum arabic, polyvinyl alcohol, polyvinyl acetate, and the like). Coloring agents can be used, and examples of coloring agents that can be used include inorganic pigments (eg, iron oxide, titanium oxide, Prussian blue) and organic dyes such as alizarin dyes, azo dyes or metal phthalocyanine dyes. In general, the preparation may contain 0.5 to 50% by weight, preferably 1.0 to 45.0% by weight of the above-mentioned raw agricultural chemical composition.

[0065]

EXAMPLES Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. The shirasu balloon used was a shirasu balloon (trade name: manufactured by Neolite Kosan Co., Ltd.) that had been sized using a sieve having an aperture according to JIS standard sieves of 500 μm and 1000 μm.

Formulation Example 1 Mefenacet (85%) bulk powder 31.80 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight A liquid composition is prepared.

A sized shirasu balloon (48.20 parts by weight) was put into a pan coater, and a mixture of soybean oil (11.20 parts by weight) and polyoxyethylene hydrogenated castor oil (2.80 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 2 Raw powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts Lignin sulfonate sodium salt 4.00 parts by weight A liquid composition is prepared.

A sized shirasu balloon (71.10 parts by weight) was put into a pan coater, and a mixture of soybean oil (9.00 parts by weight) and polyoxyethylene hydrogenated castor oil (2.30 parts by weight) was dropped. I do. After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

40 g of this pesticide preparation was put into a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

Formulation Example 3 Raw powder of mefenacet (85%) 31.80 parts by weight Dioctyl sulfosuccinate sodium salt 1.00 parts by weight Lignin sulfonate sodium salt 6.00 parts by weight A liquid composition is prepared.

A sized shirasu balloon (47.20 parts by weight) was charged into a pan coater, and corn oil (11.20 parts) was added.
Parts by weight) and polyoxyethylene hydrogenated castor oil (2.80)
(Parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 4 Raw powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts Lignin sulfonate sodium salt 4.00 parts by weight A liquid composition is prepared.

A sized shirasu balloon (71.10 parts by weight) was put into a pan coater, and a mixture of corn oil (9.00 parts by weight) and polyoxyethylene hydrogenated castor oil (2.30 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

40 g of this pesticide preparation was placed in a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

Formulation Example 5 Raw powder of mefenacet (85%) 31.80 parts by weight Dioctyl sulfosuccinate sodium salt 1.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part of each ground product is mixed well to prepare a powdery composition.

A sized shirasu balloon (47.80 parts by weight) was put into a pan coater, and a mixture of soybean oil (11.50 parts by weight) and polyoxyethylene hydrogenated castor oil (2.90 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 6 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 1.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part of each ground product is mixed well to prepare a powdery composition.

A sized shirasu balloon (70.50 parts by weight) was put into a pan coater, and a mixture of soybean oil (9.50 parts by weight) and polyoxyethylene hydrogenated castor oil (2.40 parts by weight) was dropped. I do. After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

40 g of this pesticide preparation was put into a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

Formulation Example 7 Raw powder of mefenacet (85%) 31.80 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part of each ground product is mixed well to prepare a powdery composition.

A sized shirasu balloon (46.80 parts by weight) was charged into a pan coater, and corn oil (11.50) was added.
Parts by weight) and polyoxyethylene hydrogenated castor oil (2.90)
(Parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 8 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part of each ground product is mixed well to prepare a powdery composition.

A sized shirasu balloon (69.50 parts by weight) was put into a pan coater, and a mixture of corn oil (9.50 parts by weight) and polyoxyethylene hydrogenated castor oil (2.40 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 9 (Bensulfuron methyl (15
%) Of raw powder composition) Low molecular weight polyethylene (45.00 parts by weight) was added to about 130 parts by weight.
Melts at ° C. The raw material of bensulfuron methyl (15.00 parts by weight) is added to the melt and mixed. When nearly uniform, add hydrophobic silica (40.00 parts by weight) slowly. When the addition is complete, mix at about 100 ° C. for 20 minutes, then cool to room temperature with mixing. After cooling,
Pulverize with an air mill.

Formulation Example 10 (Imazosulfuron (15%)
Preparation of bulk powder composition of low molecular weight polyethylene (45.00 parts by weight)
Melts at ° C. The imazosulfuron bulk (1
5.00 parts by weight) and mix. When nearly uniform, add hydrophobic silica (40.00 parts by weight) slowly. When the addition is complete, mix at about 100 ° C. for 20 minutes, then cool to room temperature with mixing. After cooling,
Pulverize with an air mill.

Formulation Example 11 (Imidacloprid (8.0
%) Of raw powder composition) Low molecular weight polyethylene (40.0 parts by weight) was added to about 130 ° C.
Melts. The imidacloprid bulk (8.0) was added to the melt.
Parts by weight) and mix. When nearly uniform, add hydrophobic silica (52.0 parts by weight) slowly. When the addition is complete, mix at about 100 ° C. for 20 minutes, then cool to room temperature with mixing. After cooling, pulverize with an air mill.

Formulation Example 12 (Preparation of raw powder composition of probenazole (30%)) Low molecular weight polyethylene (35.0 parts by weight) was heated to about 130 ° C.
Melts. The probenazole bulk (30.0%) was added to the melt.
Parts by weight) and mix. When nearly uniform, add hydrophobic silica (35.0 parts by weight) slowly. When the addition is complete, mix at about 100 ° C. for 20 minutes, then cool to room temperature with mixing. After cooling, pulverize with an air mill.

Formulation Example 13 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Bulk powder of bensulfuron methyl (15%) 9. Composition 9.10 parts by weight of each powder is mixed well to prepare a powder composition.

A sized shirasu balloon (58.30 parts by weight) was put into a pan coater, and a mixture of soybean oil (12.00 parts by weight) and polyoxyethylene hydrogenated castor oil (3.00 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 14 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Bulk powder composition of imazosulfuron (15%) 21.60 parts by weight of each of the powders are mixed well to prepare a powdery composition.

A sized shirasu balloon (42.80 parts by weight) was put into a pan coater, and a mixture of soybean oil (14.40 parts by weight) and polyoxyethylene hydrogenated castor oil (3.60 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

40 g of this pesticide preparation was put into a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

Formulation Example 15 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 0.50 parts by weight Lignin sulfonic acid sodium salt 6.00 parts by weight Alkyl sulfate sodium salt 1.00 parts by weight Bens 9.10 parts by weight of a powdered composition of ruflon methyl (15%) is mixed well to prepare a powdered composition.

A sized shirasu balloon (56.80 parts by weight) was put into a pan coater, and a mixture of soybean oil (12.00 parts by weight) and polyoxyethylene hydrogenated castor oil (3.00 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 16 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 1.00 parts by weight Lignin sulfonate sodium salt 3.00 parts by weight Sodium sulfate 5.00 parts by weight Imazosulfuron (15 %) Of the bulk powder composition, 21.60 parts by weight of each of the powdered materials is mixed well to prepare a powdered composition.

A sized shirasu balloon (39.80 parts by weight) was put into a pan coater, and a mixture of soybean oil (14.40 parts by weight) and polyoxyethylene hydrogenated castor oil (3.60 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 17 Bulk powder of fentrazamide (70%) 13.92 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonate sodium salt 4.00 parts by weight Bulk powder of bensulfuron methyl (15%) Composition 10.92 parts by weight of each powder is mixed well to prepare a powder composition.

A sized shirasu balloon (54.16 parts by weight) is put into a pan coater, and a mixed solution of soybean oil (12.00 parts by weight) and fatty acid polyglyceride (3.00 parts by weight) is dropped. After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 18 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonate sodium salt 4.00 parts by weight Bulk powder composition of imazosulfuron (15%) 21.60 parts by weight of each of the powders are mixed well to prepare a powdery composition.

A sized shirasu balloon (42.80 parts by weight) is put into a pan coater, and a mixed solution of soybean oil (14.40 parts by weight) and fatty acid polyglyceride (3.60 parts by weight) is dropped. After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

40 g of this pesticide preparation was put into a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

Formulation Example 19 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 1.00 parts by weight Lignin sulfonic acid sodium salt 6.00 parts by weight Bulk powder of bensulfuron methyl (15%) 9. Composition 9.10 parts by weight of each powder is mixed well to prepare a powder composition.

A sized shirasu balloon (57.30 parts by weight) was charged into a pan coater, and corn oil (12.00) was added.
Parts by weight) and polyoxyethylene hydrogenated castor oil (3.00)
(Parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 20 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Bulk powder composition of imazosulfuron (15%) 21.60 parts by weight of each of the powders are mixed well to prepare a powdery composition.

A sized shirasu balloon (42.80 parts by weight) was charged into a pan coater, and corn oil (14.40) was added.
Parts by weight) and polyoxyethylene hydrogenated castor oil (3.60)
(Parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 21 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part Bensulfuron-methyl (15%) bulk powder composition 9.10 parts by weight Each of the powders is mixed well to prepare a powdery composition.

A sized shirasu balloon (57.30 parts by weight) was put into a pan coater, and a mixture of soybean oil (12.00 parts by weight) and polyoxyethylene hydrogenated castor oil (3.00 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 22 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 1.50 parts by weight Lignin sulfonic acid sodium salt 6.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part of the bulk powder composition of imazosulfuron (15%) 21.60 parts by weight of each powder is mixed well to prepare a powder composition.

A sized shirasu balloon (40.30 parts by weight) was put into a pan coater, and a mixture of soybean oil (14.40 parts by weight) and polyoxyethylene hydrogenated castor oil (3.60 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Formulation Example 23 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part Bensulfuron-methyl (15%) bulk powder composition 9.10 parts by weight Each of the powders is mixed well to prepare a powdery composition.

The sized shirasu balloon (57.30 parts by weight) was charged into a pan coater, and corn oil (12.00) was added.
Parts by weight) and polyoxyethylene hydrogenated castor oil (3.00)
(Parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 24 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Alkyl naphthalene sulfonic acid sodium salt 1.00 parts by weight Part of the bulk powder composition of imazosulfuron (15%) 21.60 parts by weight of each powder is mixed well to prepare a powder composition.

The sized shirasu balloon (41.80 parts by weight) was charged into a pan coater, and corn oil (14.40) was added.
Parts by weight) and polyoxyethylene hydrogenated castor oil (3.60)
(Parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

Formulation Example 25 Bulk powder of fentrazamide (70%) 16.00 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Bulk powder of bensulfuron methyl (15%) The composition is mixed well with 4.55 parts by weight of each powder to prepare a powder composition.

The sized shirasu balloon (58.50 parts by weight) was charged into a pan coater, and corn oil (12.00) was added.
Parts by weight) and a mixture of polyoxyethylene tristyrylphenyl ether (3.00 parts by weight) is added dropwise. After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

50 g of this pesticide preparation was put into a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

Formulation Example 26 (Bensulfuron methyl (1
5%) of a raw powder composition) Low molecular weight polyethylene (45.00 parts by weight) was added to about 130 parts by weight.
Melts at ° C. Add the benzulfuron methyl drug substance (1
5.00 parts by weight) and mix. When almost uniform, add hydrophobic silica (20.00 parts by weight) and talc (2
0.00 parts by weight). When the addition is complete, mix at about 100 ° C. for 20 minutes, then cool to room temperature with mixing. After cooling, pulverize with an air mill.

Formulation Example 27 (Imazosulfuron (15
%) Of raw powder composition) Low molecular weight polyethylene (45.00 parts by weight) was added to about 130 parts by weight.
Melts at ° C. The imazosulfuron drug substance (15.
00 parts by weight) and mix. When it is almost uniform,
Gradually add hydrophobic silica (25.00 parts by weight) and white carbon (15.00 parts by weight). When the addition is complete, mix at about 100 ° C. for 20 minutes, then cool to room temperature with mixing. After cooling, pulverize with an air mill.

Formulation Example 28 (Bensulfuronmethyl (2
Preparation of 6%) bulk powder composition) Low molecular weight polyethylene (6.00 parts by weight) is melted with liquid paraffin (24.00 parts by weight) at about 100 ° C. The benzulfuron methyl stock (26.00 parts by weight) is added to the melt and mixed. When nearly uniform, add hydrophobic silica (40.00 parts by weight) and talc (4.00 parts by weight) gradually. After adding, about 100
Mix at <RTIgt; 30 C </ RTI> for 30 minutes, then cool to room temperature with mixing.

Formulation Example 29 Raw powder composition of bensulfuron methyl (15.0%) 3.70 parts by weight Sodium tripolyphosphate 2.00 parts by weight Dioctyl sulfosuccinate sodium salt 0.20 parts by weight Polyoxyethylene alkyl allyl sulfonate 3.50 parts by weight Dextrin 1.00 parts by weight Sodium polycarboxylate 1.00 parts by weight Bentonite powder 30.00 parts by weight Talc powder 58.60 parts by weight After mixing the above components, water is added and kneaded. It was extruded using an extruder and then extruded using a fluidized bed drier and sized to obtain granules.

Formulation Example 30 Raw powder composition of imazosulfuron (15%) 8.70 parts by weight Sodium tripolyphosphate 2.00 parts by weight Dioctyl sulfosuccinate sodium salt 0.20 parts by weight Polyoxyethylene alkyl allyl sulfonate 3.50 parts by weight Parts dextrin 1.00 parts by weight sodium polycarboxylate 1.00 parts by weight bentonite powder 30.00 parts by weight talc powder 53.60 parts by weight After mixing the above components, water is added and kneaded. It was extruded using an extruder and then extruded using a fluidized bed drier and sized to obtain granules.

Comparative Preparation Example 1 Bulk powder of fentrazamide (70%) 11.60 parts by weight Lignin sulfonic acid sodium salt 4.00 parts by weight Bulk powder composition of bensulfuron methyl (15%) 9.10 parts by weight Each powder The powders are mixed well to prepare a powdery composition.

A sized shirasu balloon (60.30 parts by weight) was put into a pan coater, and a mixture of soybean oil (12.00 parts by weight) and polyoxyethylene hydrogenated castor oil (3.00 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Comparative Preparation Example 2 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Bensulfuron methyl (15%) bulk powder composition 9.10 parts by weight The powdery material is mixed well to prepare a powdery composition.

A sized shirasu balloon (62.30 parts by weight) was put into a pan coater, and a mixture of soybean oil (12.00 parts by weight) and polyoxyethylene hydrogenated castor oil (3.00 parts by weight) was dropped. I do. After the mixture was sufficiently spread, the powdery composition was added little by little to a pan coater,
The intended pesticide formulation is prepared by operating a pan coater until the powdery composition is apparently substantially uniformly coated on the shirasu balloon.

Comparative Preparation Example 3 Bulk powder of fentrazamide (70%) 11.60 parts by weight Dioctyl sulfosuccinate sodium salt 2.00 parts by weight Lignin sulfonate sodium salt 7.00 parts by weight Imazosulfuron (30%) bulk powder composition Material * 10.90 parts by weight of each powdery material is mixed well to prepare a powdery composition.

The sized shirasu balloon (59.00 parts by weight) was charged into a pan coater, and spindle oil (9.5) was added.
0 parts by weight). After the mixture was sufficiently distributed, the powdery composition was added little by little to a pan coater, and the pan coater was operated until the powdery composition was apparently substantially uniformly coated on the shirasu balloon, Prepare the desired pesticide formulation.

40 g of this pesticide preparation was put into a bag (10 × 10 cm) of a water-soluble PVA (polyvinyl alcohol) film having a thickness of 40 μm made using a heat sealer.
Seal with a heat sealer to prepare a solid pesticide formulation.

The above-mentioned bulk composition of imazosulfuron (30%) is obtained by mixing each component of the imazosulfuron raw material 30 parts by weight white carbon 10 parts by weight calcium carbonate 60 parts by weight and pulverizing with an air mill.

Test Example 1 (Expansion test) The water-applied preparation according to the present invention was packaged in a PVA film,
Can be dropped directly into rice fields. After dropping this formulation,
The PVA dissolves quickly, the contents spread on the surface of the rice field, and the active ingredient can be uniformly dispersed in the rice field. The spreadability test was performed by the following method to confirm the uniform distribution of the active ingredient in the paddy field.

FIG. 1 shows 14 petri dishes having a diameter of about 9 cm and a depth of 1.8 cm in a glass water tank of 74 cm in length and 120 cm in width.
And water was introduced so as to have a water depth of about 5 cm. Next, 10 g of the preparation prepared in Preparation Example 2 and packaged in a water-soluble PVA film bag (length 3 cm, width 3 cm) was gently dropped into a water tank. One hour later, the Petri dish was gently removed, the water on the Petri dish was collected in a volumetric flask, and the Petri dish was washed with acetonitrile, and the washing liquid was collected in the volumetric flask. After the volume of the volumetric flask was adjusted to a constant volume, the pesticidal active ingredient (fentrazamide) (1- (2-chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H)-on each petri dish was analyzed by HPLC. (Tetrazolinone). Further, the average weight of the pesticidal active ingredient (fentrazamide) and the variation coefficient of the weight of the active ingredient were determined by the following formula.

[0133]

(Equation 1)

Xi = weight of pesticidal active ingredient in Petri dish (X
1, X2 ... Xi ... Xn).

N = 14 = number of Petri dishes.

The formulations of Formulation Examples 4, 6, 13 and 18 and Comparative Formulation Examples 1 and 2 were prepared in the same manner as in Test Example 1.
The average weight of the pesticide active ingredient (fentrazamide) and the coefficient of variation of the weight of the pesticide active ingredient were determined. The results are shown in Table 1 below. A smaller coefficient of variation of the weight of the active ingredient indicates that the active ingredient is more uniformly distributed in the paddy field.

[0137]

[Table 1]

In the preparations of Comparative Examples 1 and 2, the coefficient of variation (%) of the weight of the active ingredient was about 65% and about 7%, respectively.
Formulation Examples 2, 4, 6, 13 and 1 in contrast to 2%
Formulation No. 8 has a coefficient of variation (%) of the active ingredient weight of about 20%
Indicates that they are uniformly distributed.

Test Example 2 (Expansion Test in Simulated Paddy Field) As shown in FIG. 2, a concrete pool having a length of 4.1 m and a width of 2.6 m has seven bottles having a diameter of 7.5 cm as obstacles. It was arranged and filled with water to a depth of about 5 cm. Next, after dropping 6.0 g of the preparation packaged in a bag of a water-soluble PVA film prepared according to Preparation Example 2 into a pool, a certain amount of water was collected over time from the point shown in FIG. The concentration of the active ingredient (fentrazamide) was measured to investigate the state of expansion.

The tests of Formulation Examples 6, 13 and 18 and Comparative Formulation Examples 1 and 2 were similarly tested. Table 2 shows the results.

[0141]

[Table 2]

[0142]

[Table 3]

As shown in Table 2, the concentration of fentrazamide in Formulation Examples 2 and 6 in water reached the predetermined concentration immediately after administration. Further, since the coefficient of variation (%) sharply decreases, it indicates that there is no difference in the concentration of the active ingredient in the water due to the difference in the sampling location, indicating that the active ingredient was quickly and uniformly distributed. On the other hand, in Comparative Preparation Example 1, the concentration of the active ingredient in water at sampling point 1 was
And the coefficient of variation (%) is as large as 100% or more over time, indicating that the concentration distribution of the active ingredient is non-uniform.

Similarly, the test results of Formulation Example 13, Formulation Example 18 and Comparative Formulation Example 2 show that the formulation of the present invention has a uniform distribution of the active ingredient in paddy fields.

Test Example 3 (Dissolution Test) A soil (5 cm) was placed in a pot (16 × 25 × 10 cm), and water was spread to a depth of 3 cm. 20 mg of each of the preparations of Comparative Preparation Examples 3 to 20 was weighed and put into each pot. At 0.17, 0.29, 1, 2 and 4 days after the injection, a part of the water was collected and the concentrations of eluterazamide and imazosulfuron eluted were measured by high performance liquid chromatography. The results are shown in Table 3 below.

[0146]

[Table 4]

[0147]

[Table 5]

As shown in Table 3, elution of fentrazamide in Comparative Preparation Example 3 was 0.2 p.
pm, whereas fentrazamide elutes very quickly in the formulation of Formulation Example 20 immediately after administration of the formulation, with 0.6
ppm or more.

As shown in Table 4, elution of imazosulfuron in the case of Comparative Preparation Example 3 showed that the water solubility of the active ingredient was 6%.
Since it is as high as 7 ppm, it elutes immediately after
ppm. On the other hand, imazosulfuron in the case of Formulation Example 20 was gradually eluted after the administration, and was still about 0.15 ppm even after 1 day, indicating that the elution could be suppressed.

Test Example 4 (Herbicidal effect on paddy field weeds and phytotoxicity on transplanted paddy rice) Paddy fields in which weeds (Tanubie, Tamayatsuri, Firefly, Konagi, and broadleaf weeds) naturally occur were replaced with a ground, and the soil was removed.
The area was divided into 0 m ² (10 m × 10 m). Three rice plants (variety: Nipponbare, 2.5 leaf stage, plant height 15 cm) were transplanted as one strain and kept at a water depth of about 4 cm. When weeds emerged and the rice flour reached the 1.5 leaf stage, 40 g of the formulation packaged in a bag of the water-soluble PVA film prepared in Formulation Example 13 was introduced. The state of dispersion of the agent after introduction was examined by visual observation.

The loading place is 50 cm × 50 c at one corner of the section.
m (see FIG. 3).

The herbicidal effect and the phytotoxicity on the transplanted rice were examined 2 weeks and 3 weeks after introduction.

The evaluation criteria were 100 for complete killing and 0 for no effect. A herbicidal effect of 90 or more was made practical, and a phytotoxicity of 10 or less was made practical.

The same test was conducted for the preparations of Preparation Example 18, Comparative Preparation Example 1 and Comparative Preparation Example 2.

Tables 5 to 7 show the results.

[0156]

[Table 6]

[0157]

[Table 7]

[0158]

[Table 8]

[0159]

As is evident from the results of the above test examples, the spreadability of the preparation of the present invention in paddy water is very good, so that it is not always necessary to apply the preparation uniformly to the paddy water during application. In addition, it is possible to uniformly disperse the pesticidally active substance over the entire rice field even by applying it near the ridge. Furthermore,
The water-applied preparation of the present invention makes it possible to control the dissolution of the pesticidal active ingredient, i.e., in the case of a slightly water-soluble or water-soluble pesticide active ingredient, suppresses the dissolution and also controls the poorly water-soluble pesticide active ingredient. In some cases, elution can be promoted.

[Brief description of the drawings]

FIG. 1 is a view showing the arrangement of a Petri dish and a place where a preparation is dropped in Test Example 1 (dispersibility test).

FIG. 2 is a diagram showing a position of an obstacle, a dropping point of a preparation, and a sampling point in Test Example 2 (dispersion test in a paddy field).

FIG. 3 is a view showing test drug (preparation) drop points in paddy fields in Test Example 4 (herbicidal effect on paddy field weeds and phytotoxicity on transplanted paddy rice).

Claims (17)

[Claims] 1. A powdery composition comprising a poorly water-soluble agrochemical active ingredient, a dialkyl sulfosuccinate salt and a lignin sulfonate, having an apparent specific gravity of less than 1 and about 500
A particle having a particle diameter in the range of from about 1 μm to about 1400 μm, and coated with a mixture of vegetable oil and a surfactant on a particle nucleus of calcined pumice stone. A water-applied pesticide formulation with good runnability. 2. A powdery composition comprising a poorly water-soluble pesticidal active ingredient, a dialkyl sulfosuccinate salt and a lignin sulfonate, and a pesticide comprising a water-soluble or water-soluble pesticidal active ingredient, polyethylene and hydrophobic silica. The mixture composition with the bulk powder composition is obtained by using a mixture of vegetable oil and a surfactant on a grain nucleus of calcined pumice having an apparent specific gravity of less than 1 and a particle diameter in a range of about 500 μm to about 1400 μm. A water-applied mixed pesticide formulation having good floating traveling properties, characterized by being coated with a carrier. 3. The agricultural chemical formulation according to claim 1, wherein the powdery composition further contains an alkylnaphthalene sulfonate. 4. A raw agricultural chemical composition comprising an active agricultural chemical, polyethylene and hydrophobic silica. 5. The bulk agricultural chemical composition according to claim 4, further comprising liquid paraffin. 6. The polyethylene having a molecular weight of 1000 to 15
The pesticide bulk powder composition according to claim 4, which is in the range of 000. 7. A pesticide granule comprising the bulk pesticide composition of claim 4 as a constituent. 8. The method according to claim 8, wherein the poorly water-soluble pesticidal active ingredient is 10% at 20 ° C.
The agricultural chemical formulation according to claim 1 or 2, having a water solubility of not more than ppm. 9. The poorly water-soluble pesticidal active ingredient may be mefenacet, fentorazamide, dimelone, cumyluron, bromobutide, naproanilide, clomeprop, tenylchlor, esprocarb, pyributicarb, cyhalofopbutyl, cafenstrole, pyrazolate, pyrazoxyfen, benzofenap, pyrimelate. Novakmethyl, butamiphos, etobenzanide, bifenox, fentoate, pyridafenthion, chlorpyrifosmethyl, etofenprox, fipronil, carbosulfan, benflacarb, fratiothiocarb, cycloprothrin, buprofezin, bensultap, penciclon, fusaride, flutranil, diclomethine, azoxystrobin , Thifluzamide, carpropamide, diclosimet and reed The agricultural chemical formulation according to claim 1, 2 or 8, which is one or more selected from the group consisting of benzoral-S-methyl. 10. The method according to claim 1, wherein the vegetable oil is one or more selected from the group consisting of soybean oil, linseed oil, cottonseed oil, rapeseed oil, rice bran oil, corn oil, palm oil and olive oil. Pesticide formulation. 11. The water-applied pesticide formulation according to claim 1, wherein the surfactant is one or more selected from the group consisting of an anionic surfactant and a nonionic surfactant. 12. The pesticidal preparation according to claim 11, wherein the anionic surfactant is a dialkyl sulfosuccinate. 13. The nonionic surfactant is polyoxyalkylene nonyl phenyl ether, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, fatty acid polyglyceride, polyoxyethylene tristyryl phenyl ether, sorbitan fatty acid ester, glycerin fatty acid ester The agricultural chemical formulation according to claim 11, which is one or more selected from the group consisting of sucrose fatty acid esters and propylene glycol fatty acid esters. 14. The water-soluble or water-soluble pesticidal active ingredient is preferably benzulfuron-methyl, pyrazosulfuron-ethyl, imazosulfuron, thifensulfuron-methyl, metsulfuron-methyl, furazasulfuron, halosulfuron, sinosulfuron, chlorsulfuron. , Azimsulfuron, cyclosulfamuron, 2,4-D, MCPB,
Simethrin, dimethamethrin, benthiocarb, dimepiperate, molinate, butachlor, pretilachlor, piperofos, benlide, benfresate, bentazone, ACN, imidacloprid, nitenpyram, thiacloprid, BPMC, isoprocarb, carbaryl, fenthion, ethylthiometon, diazinon,
The agricultural chemical formulation according to claim 2, which is one or more selected from the group consisting of propaphos, dimethylvinphos, triadimefon, isoprothiolane, flametopil, probenazole, and pyroquilone. 15. The calcined pumice has a grain nucleus of about 500 μm to about 1 μm.
The pesticide formulation according to claim 1 or 2, having a particle size in the range of 000 µm. 16. The method according to claim 16, wherein the poorly water-soluble pesticide active ingredient is contained in an amount of about 0.05.
About 0.5 to about 25 parts by weight of a mixture of dialkyl sulfosuccinate salt and lignin sulfonate; about 1 to about 20 parts by weight of vegetable oil;
The pesticide formulation of claim 1, comprising about 0.5 parts to about 10 parts by weight of a surfactant; and about 10 parts to about 80 parts by weight of calcined pumice. 17. A method for producing a water-applied pesticide preparation having grain nuclei, wherein a mixture comprising a vegetable oil and a surfactant is used when the grain nucleus is coated with a composition containing an agricultural chemical active ingredient. A method for producing a water-applied pesticide formulation.