JPH10182303A - Highly flowable agrochemical composition for water application - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agrochemical preparation for paddy water application that can spread its effective ingredients over the whole area of a paddy field. SOLUTION: This highly flowable agrochemical preparation for paddy water application comprises clinkered pumice which has apparent specific gravity of 1 or less and particle size ranging from approximately 500μm to approximately 1400μm, and a powdery mixture of active agrochemical substances, alkylnaphthalene sulfonates, and lignin sulfonates, as well as alkylsulfates where necessary, so that the powdery mixture covers the pumice particles by the aid of spindle oil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-applied agricultural chemical having good floating performance. More specifically, the present invention relates to a water-applied pesticide formulation having a good floating performance in paddy water, as a formulation form for spraying agricultural chemicals.

[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 these 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, etc., 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 are some which do not spread sufficiently on the water surface of the rice field but sink in places where they are sprayed. Further, the bulk becomes large, which may cause problems in processing, distribution, and the like.

[0008]

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.

That is, the present invention relates to a pesticidal active substance, an alkylnaphthalene sulfonate and a dialkyl sulfosuccinate salt on calcined pumice having an apparent specific gravity of less than 1 and a particle size in a range of about 500 μm to about 1400 μm. And a powdery mixture comprising a ligninsulfonate salt, and optionally further added with an alkyl sulfate salt, coated and supported using spindle oil, thereby providing a waterborne agricultural chemical formulation having good floating traveling properties. It is.

When the water-applied pesticide formulation of the present invention is applied to a paddy field, the formulation will have various effects on the water surface with the dissolution of the alkylnaphthalenesulfonate, dialkylsulfosuccinate, ligninsulfonate and optionally the alkylsulfate salt. In which direction the particles are dispersed very quickly and uniformly in the paddy water, and the pesticidal active substance released from the preparation is also uniformly dispersed and dissolved in the paddy water as the preparation runs. In addition, since the pesticide formulation for surface application of the present invention has a very high release rate of the pesticidal active substance, even if the grain nuclei remain on the surface of the water and are blown by the wind, the pesticide active substance has already been released. It has an extremely favorable feature in practical use, having no effect on the manifestation of the effect.

Hereinafter, the pesticide preparation for water application according to the present invention will be described in more detail.

The grain core used as a carrier in the water-applied agrochemical preparation of the present invention has a particle size of about 500 μm to about 1400 μm.
m, 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 can be prepared, for example, by using a standard sifter according to JIS and removing particles larger than the upper limit and smaller than the lower limit of the above particle size range.

In the water-applied pesticide preparation of the present invention, the spindle oil is prepared by mixing the powdery mixture containing an agrochemical active ingredient, an alkylnaphthalenesulfonic acid, a dialkylsulfosuccinate salt and a ligninsulfonate, and optionally an alkylsulfate salt with the spindle oil. It is used to support on the grain nuclei of calcined pumice.

Further, depending on the pesticidal active ingredient to be used, oily substances such as paraffin, glycerin ester, animal and vegetable oils and fats, butadiene and the like may be added in order to support the powdery mixture on the grain nucleus. it can.

The alkylnaphthalenesulfonate, dialkylsulfosuccinate, ligninsulfonate and alkylsulfate used in the water-applied agrochemical preparation of the present invention change the air-water interfacial tension, and the granules are used on the surface of rice paddy. At the same time as traveling, has the effect of quickly releasing the pesticide active ingredient into the surface water.

Optionally, a substance capable of further altering the air-water interfacial tension can be added, such as the surface tension of water when added to water at a critical micelle concentration (cmc). Preferably, the substance has the ability to reduce the amount of benzene by 30% or more, for example, alkyl benzene 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, etc. Can be mentioned. It is desirable that these are generally in the form of a solid powder at room temperature.

The mixing ratio of alkylnaphthalenesulfonate, dialkylsulfosuccinate and ligninsulfonate used in the water-applied agrochemical preparation of the present invention can be as follows: 1 weight of alkylnaphthalenesulfonate Parts by weight: dialkyl sulfosuccinate salt: 1 part by weight to 6 parts by weight, preferably 2 parts by weight to 3.3 parts by weight, lignin sulfonate: 0.6 parts by weight to 6 parts by weight, preferably 1. part by weight. 5 parts by weight to 3.3 parts by weight.

Further, if necessary, the alkyl sulfate salt may be mixed at a ratio of 0.16 parts by weight to 1 part by weight with respect to 1 part by weight of the alkyl naphthalene sulfonate.

Furthermore, the pesticidal active substance used in the water-applied pesticide formulation of the present invention is not particularly limited, and has a herbicidal activity,
Substances having insecticidal activity, bactericidal activity and the like can be used. Specific examples include the following compounds : Compounds having herbicidal activity : 2-benzothiazole-2-
Iloxy-N-methylacetanilide, (RS) -2
-Bromo-N- (α, α-dimethylbenzyl) -3,3
-Dimethylbutylamide, 2-chloro-2 ', 6'-diethyl-N- (2-propoxydiethyl) acetanilide, 2-chloro-2', 6'-diethyl-N- (butoxydimethyl) acetanilide, 2-chloro -N- (3-methoxy-2-thenyl) -2 ', 6'-dimethylacetanilide, S- (4-chlorobenzyl) -N, N-diethylthiocarbamate, S-benzyl 1,2-dimethylpropyl (ethyl ) Thiocarbamate, O-3-ter
t-butylphenyl 6-methoxy-2-pyridyl (methyl) thiocarbamate, S-ethylhexahydro-1
H-azepine-1-carbothioate, 1- (diethylcarbamoyl) -3- (2,4,6-trimethylphenylsulfonyl) -1,2,4-triazole, 1- (3
-Chloro-4-trifluoromethylphenyl) -4-
(N, N-dimethylcarbamoyl) -5 (4H) -tetrazolinone, 1- (3-chloro-4-trifluoromethylthiophenyl) -4- (N, N-dipropylcarbamoyl) -5 (4H) -tetrazolinone, 1- (3-chloro-4-trifluoromethoxydiphenyl) -4- (N,
N-dipropylcarbamoyl) -5 (4H) -tetrazolinone, 1- (3-chloro-4-isopropylphenyl) -4- (N, N-diethylcarbamoyl) -5 (4
H) -Tetrazolinone, 1- (3-chloro-4-isopropylphenyl) -4- (N, N-dipropylcarbamoyl) -5 (4H) -tetrazolinone, 1- (3-chloro-4-isopropylphenyl)- 4- (N, N-diallylcarbamoyl) -5 (4H) -tetrazolinone,
-(2-chlorophenyl) -4- (N, N-diethylcarbamoyl) -5 (4H) -tetrazolinone, 1- (2
-Chlorophenyl) -4- (N, N-dipropylcarbamoyl) -5 (4H) -tetrazolinone, 1- (2-chloro-6-methylphenyl) -4- (N, N-diethylcarbamoyl) -5 (4H ) -Tetrazolinone, 1-
(2,6-dichlorophenyl) -4- (N, N-diethylcarbamoyl) -5 (4H) -tetrazolinone, 1-
(2-chloro-6-methylphenyl) -4- (N-ethyl-N-isopropylcarbamoyl) -5 (4H) -tetrazolinone, 1-phenyl-4- (N-cycloheptyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone, 1- (2-chloro-6-methylphenyl) -4
-(N, N-dipropylcarbamoyl) -5 (4H)-
Tetrazolinone, 1- (2-chlorophenyl) -4-
(N-cyclopentyl-N-ethylcarbamoyl) -5
(4H) -tetrazolinone, 1- (2-chlorophenyl) -4- (N-cyclopentyl-N-propylcarbamoyl) -5 (4H) -tetrazolinone, 1- (2-chlorophenyl) -4- (N-cyclohexyl-N -Ethylcarbamoyl) -5 (4H) -tetrazolinone, 1-
(2-Chloro-6-methylphenyl) -4- (N-cyclopentyl-N-propylcarbamoyl) -5 (4H)
-Tetrazolinone, 1- (2-bromophenyl) -4-
(N-cyclopentyl-N-ethylcarbamoyl) -5
(4H) -tetrazolinone, 1- (2-bromophenyl) -4- (N-cyclopentyl-N-propylcarbamoyl) -5 (4H) -tetrazolinone, 1- (2-bromo-6-methylphenyl) -4- (N-cyclopentyl-N-propylcarbamoyl) -5 (4H) -tetrazolinone, methyl 2-[(4,6-dimethoxy-2-
Pyrimidinyl) oxy] -6- [1- (methoxyimino) ethyl] benzoate, methyl α- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl-O-toluate, ethyl 5- (4,6- Dimethoxypyrimidin-2-yl-carbamoylsulfamoyl) -1-methylpyrazole-4-carboxylate;
1- (2-chloroimidazo [l, 2-a] pyridine-3
-Ylsulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea, N-([4,6-dimethoxypyrimidin-2-yl) aminocarbonyl) -1-methyl-4- (2- Methyl-2H-tetrazol-5-yl) -1H-pyrazole-5-sulfonamide, N-
([4,6-dimethoxy-1,3,5-triazine-2
-Yl] aminocarbonyl) -2- (2-methoxyethoxy) benzenesulfonamide, 1-[[O- (cyclopropylcarbonyl) phenylsulfamoyl-3-
(4,6-dimethoxy-2-pyrimidinyl) urea, 4
-(2.4-dichlorobenzoyl) -1,3-dimethylpyrazol-5-yl-p-toluenesulfonate, 2
-[4- (2,4-dichloro-m-toluoyl) -l,
3-dimethylpyrazol-5-yloxy] -4-methylacetophenone, 2- [4- (2,4-dichlorobenzoyl) -1,3-dimethylpyrazol-5-yloxycoacetophenone, 2- (β-naphthyloxy ) Propionanilide, (RS) -2- (2,4-dichloro-)
m-tolyloxy) propionanilide, n-butyl (R) -2- [4- (4-cyano-2-fluorophenoxy) phenoxy] propionate, 1- (α, α-dimethylbenzyl) -3-p-tolylurea, N-[(2
-Chlorophenyl) methyl] -N '-(l-methyl-1
-Phenylethyl) urea, 2-methyl-4-chlorophenoxybutyric acid, 2,4-dichlorophenoxyacetic acid, 2,
4-bis (ethylamino) -6-methylthio-1,3,
5-triazine, 2-ethylamino-4- (1,2-dimethylpropylamino) -6-methylthio-1,3,5
-Triazine, a compound having an insecticidal activity : 2-isopropoxyphenyl-N-methylcarbamate, 2-sec-butylphenyl-N-methylcarbamate, 1- (6-chloro-3-
Pyridylmethyl) -N-nitroimidazolidin-2-ylideneamine, O, O-dimethyl-0- [3-methyl-
4- (methylthio) phenyl] thiophosphate, a compound having a bactericidal activity : 1- (4-chlorophenoxy) -3,3-dimethyl-1- (1,2,4-triazol-1-yl) -2-butanone , All-rac-1
-(Biphenyl-4-yloxy) -3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl)
Butan-2-ol, zinc propylenebisdithiocarbamate, 3-allyloxy-1,2-benzoisothiazole-1,1-dioxide, 1,2,5,6-tetrahydropyrrolo [3,2,1-ij] quinoline -4-one.

The water-applied pesticide formulation of the present invention may contain the pesticidal active substances as exemplified above alone or in combination of two or more.

In the preparation for water application according to the present invention, a bulking agent may be further added to the powdery mixture, if necessary.
The type of extender that can be used is not particularly limited as long as it is easily water-soluble, and specifically, for example, urea, sodium sulfate,
Potassium sulfate, potassium chloride, saccharides, polyethylene glycol and the like can be mentioned, and preferably, urea and sodium sulfate can be mentioned. By adding such a water-soluble bulking agent, the amount of calcined pumice of the grain nucleus can be reduced, and a preparation having a small bulk volume can be obtained.

In order to prepare a powdery mixture using the above-mentioned agrochemical active substance, alkylnaphthalenesulfonate, dialkylsulfosuccinate, ligninsulfonate, alkylsulfate and extender, dry milling known per se is used. A method can be adopted. That is, a granular mixture can be obtained by charging these components into a pin mill, a hammer mill, a jet mill or the like and mixing and pulverizing them.

The water-applied pesticide preparation of the present invention comprises the preparation 10
About 0.05 parts by weight to about 50 parts by weight, preferably about 1.0 parts by weight to about 30 parts by weight, based on 0 parts by weight, of an agrochemical active substance; alkylnaphthalene sulfonate, dialkyl sulfosuccinate About 0.5 parts to about 25 parts, preferably about 5 parts to about 15 parts by weight of the mixture containing the salt and lignin sulfonate, and optionally the alkyl sulfate salt; About 16 parts by weight, preferably about 5 parts by weight to about 14 parts by weight; about 0 parts by weight to about 40 parts by weight of the water-soluble extender, preferably about 0 parts by weight to about 25 parts by weight; 10 parts by weight to about 80 parts by weight, preferably about 30 parts by weight
It can be contained in a proportion of from about 60 parts by weight to about 60 parts by weight.

The water-applied agrochemical preparation of the present invention may be optionally packaged in a water-soluble film in a unit of about 10 to about 200 g, preferably about 25 to about 60 g per package, in order to enhance the efficiency of spraying. Solid preparation.

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

[0026] The preparation of the present invention may contain about 10 to about 200
It can be placed in a mold in units of g and heated or / and compressed to give a large molded preparation. 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 surface-applied pesticide formulation of the present invention is obtained, for example, by coating a calcined pumice having an apparent specific gravity described above of less than 1 and having a particle size in a range of about 500 μm to about 1400 μm with spindle oil, and applying the coated particles. It can be produced by coating a powdery mixture comprising a pesticidally active substance, an alkylnaphthalenesulfonate, a dialkylsulfosuccinate and a ligninsulfonate and optionally further containing an alkylsulfate salt on the core surface.

More specifically, for example, a 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 whose particle size has been adjusted is transferred to a pan coater, and a predetermined amount of spindle oil is dropped on the calcined pumice while the pan coater is operating, to sufficiently coat the calcined pumice. The powdered mixture to which the previously prepared pesticidally active substance, the alkylnaphthalenesulfonate, the dialkylsulfosuccinate and the ligninsulfonate, and optionally further the alkylsulfate salt and / or the easily water-soluble bulking agent are added is gradually added. In addition, by operating the pan coater sufficiently until the powdery mixture is substantially uniformly coated on the surface of the granular carrier, the desired water-applied pesticide preparation can be produced.

In producing the water-applied pesticide preparation of the present invention, if the pesticidal active substance is in a liquid form, it is first adsorbed on a carrier such as white carbon, talc, diatomaceous earth, or clay, and then treated with an alkylnaphthalene sulfonate. It may be mixed with a dialkyl sulfosuccinate salt and a lignin sulfonate to form a powdery mixture.

When the water-applied pesticide 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 a suitable outlet. Also,
When processed into a solid preparation packaged in a water-soluble film, 2 to 40, preferably 5
By dropping ~ 20, a sufficient effect can be exhibited. In any case, the drop interval does not need to be uniform, and a desired effect can be exhibited by dropping at random intervals.

[0031]

EXAMPLES Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

Formulation Example 1 Shirasu balloon (trade name: manufactured by Neolite Kosan Co., Ltd.)
S Size is sieved with a sieve with openings according to 500 μm and 1400 μm standard sieves.

A raw material of 1- (2-chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) [8.87 parts by weight], methyl α- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -O-toluate (10.1%) bulk [6.24 parts by weight], 1- (4,6-dimethoxypyrimidin-2-yl) ) -3- [1-Methyl-4- (2-methyl-2H-tetrazol-5-yl) pyrazol-5-ylsulfonyl] urea (4.93%) [2.56 parts by weight], 1 -(Α, α-dimethylbenzyl) -3- (paratolyl) urea (84.8%) bulk [11.67 parts by weight], alkylnaphthalenesulfonic acid sodium salt [2.00 parts by weight], dioctylus Phosuccinate sodium salt [5.02 parts by weight], ligninsulfonic acid sodium salt [4.04 parts by weight] and urea [4.60 parts by weight] are pulverized with a pin mill and mixed well to prepare a powdery mixture. .

The sized shirasu balloon (45.00 parts by weight) was put into a pan coater, and spindle oil [1
0.00 parts by weight]. After the spindle oil has been sufficiently distributed, the powdery mixture is added little by little to a pan coater, and the pan coater is operated until the powdery mixture is apparently substantially uniformly coated on the shirasu balloon. Prepare pesticide formulation.

Formulation Example 2 1- (2-Chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) bulk [8.87 parts by weight] The original form of methyl α- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -O-toluate (10.1%) [6.24 parts by weight], 1- (4,6-dimethoxypyrimidine- 2- (yl) -3- [1-methyl-4- (2-methyl-2H-tetrazol-5-yl) pyrazol-5-ylsulfonyl] urea (4.93%) [2.56 parts by weight 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (84.8%) bulk [11.67 parts by weight], alkylnaphthalenesulfonic acid sodium salt [2.00 parts by weight], Geo Chill sulfosuccinate sodium salt [5.02 parts by weight] and lignin sulfonic acid sodium salt [4.04 parts by weight] was thoroughly pulverized in a pin mill, mixed well to prepare a powdery mixture.

A shirasu balloon (47.60 parts by weight) sized as in Preparation Example 1 is put into a pan coater, and spindle oil [12.00 parts by weight] is dropped. After the spindle oil has been sufficiently distributed, the powdery mixture is added little by little to a pan coater, and the pan coater is operated until the powdery mixture is apparently substantially uniformly coated on the shirasu balloon. Prepare pesticide formulation.

50 g of this pesticide preparation was put into a bag (12 × 12 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 2-benzothiazol-2-yloxy-N-methylacetanilide (86.2%) drug substance (18.79 parts by weight), methyl α- (4,6-dimethoxypyrimidin-2-i) The original form of rucarbamoylsulfamoyl) -O-toluate (10.1%) [10.40 parts by weight], 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (84.8%) Bulk substance [11.14 parts by weight], alkylnaphthalenesulfonic acid sodium salt [2.00 parts by weight], dioctyl sulfosuccinate sodium salt [5.02 parts by weight], and ligninsulfonic acid sodium salt [4.04 parts by weight] Is finely ground with a pin mill and mixed well to prepare a powdery mixture.

A shirasu balloon (38.61 parts by weight) sized as in Preparation Example 1 was charged, and the same procedure as in Preparation Examples 1 and 2 was carried out using spindle oil [10.00 parts by weight]. A solid pesticide formulation containing 50 g of the pesticide formulation is prepared.

Formulation Example 4 2-benzothiazol-2-yloxy-N-methylacetanilide (86.2%) bulk [18.79 parts by weight], methyl α- (4,6-dimethoxypyrimidin-2-i) Rucarbamoylsulfamoyl) -O-toluate (10.1%) drug substance [15.57 parts by weight], alkylnaphthalenesulfonic acid sodium salt [2.00 parts by weight], dioctylsulfosuccinate sodium salt [5.02 Parts by weight) and ligninsulfonic acid sodium salt [4.04 parts by weight] are thoroughly pulverized with a pin mill and mixed well to prepare a powdery mixture.

A shirasu balloon (42.69 parts by weight) sized as in Formulation Example 1 was charged, and the same procedure as in Formulation Examples 1 and 2 was carried out using spindle oil (12.00 parts by weight). A solid pesticide formulation containing 50 g of the pesticide formulation is prepared.

Formulation Example 5 1- (2-Chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) bulk [8.87 parts by weight] The original form of 1- (2-chloroimidazo [1,2-a] pyridin-3-ylsulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea (31.0%) [6.09 Parts by weight], a raw material of 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (84.8%) [24.76 parts by weight], alkylnaphthalenesulfonic acid sodium salt [2.00 parts by weight] ], Dioctyl sulfosuccinate sodium salt [5.02 parts by weight] and ligninsulfonic acid sodium salt [4.04 parts by weight] are pulverized with a pin mill and mixed well to prepare a powdery mixture.

A shirasu balloon (39.22 parts by weight) sized as in Preparation Example 1 was charged, and the same procedure as in Preparation Examples 1 and 2 was carried out using spindle oil [10.00 parts by weight]. A solid pesticide formulation containing 50 g of the pesticide formulation is prepared.

Formulation Example 6 1- (2-Chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) as a raw material [8.87 parts by weight] The original form of 1- (2-chloroimidazo [1,2-a] pyridin-3-ylsulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea (31.0%) [6.09 Parts by weight), sodium alkylnaphthalenesulfonate [2.00 parts by weight], sodium dioctylsulfosuccinate [5.02 parts by weight] and sodium ligninsulfonate [4.04 parts by weight] were crushed with a pin mill, Mix well to prepare a powdery mixture.

A shirasu balloon (59.98 parts by weight) sized as in Preparation Example 1 was charged, and spindle oil (14.00 parts by weight) was used, and the same procedure as in Preparation Examples 1 and 2 was carried out. A solid pesticide formulation containing 50 g of the pesticide formulation is prepared.

Formulation Example 7 A raw material of 1- (2-chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) [8.87 parts by weight], 5- (4,6-Dimethylpyrimidin-2-ylcarbonylsulfamoyl) -1-methylpyrazole-4-carboxylic acid (4.21%) bulk [14.96 parts by weight], alkylnaphthalenesulfonic acid The sodium salt [2.00 parts by weight], dioctyl sulfosuccinate sodium salt [5.00 parts by weight] and ligninsulfonic acid sodium salt [4.00 parts by weight] are pulverized with a pin mill, mixed well, and the powdery mixture is mixed. Prepare.

A shirasu balloon (51.17 parts by weight) sized as in Formulation Example 1 was charged, and the same procedure as in Formulation Examples 1 and 2 was carried out using spindle oil (14.00 parts by weight). A solid pesticide formulation containing 50 g of the pesticide formulation is prepared.

Formulation Example 8 2-benzothiazol-2-yloxy-N-methylacetanilide (86.2%) bulk [10.00 parts by weight], alkylnaphthalenesulfonic acid sodium salt [2.00 parts by weight], Dioctyl sulfosuccinate sodium salt [5.00 parts by weight] and ligninsulfonic acid sodium salt [4.00 parts by weight] are pulverized with a pin mill and mixed well to prepare a powdery mixture.

A shirasu balloon (65.00 parts by weight) sized as in Formulation Example 1 was charged, and 50 g of spindle oil (14.00 parts by weight) was used in the same procedure as in Formulation Examples 1 and 2 above. To prepare a solid pesticide formulation enclosing the pesticide formulation.

Formulation Example 9 2-benzothiazol-2-yloxy-N-methylacetanilide (86.2%) bulk [10.00 parts by weight], alkylnaphthalenesulfonic acid sodium salt [1.75 parts by weight], Dioctyl sulfosuccinate sodium salt [4.50 parts by weight], ligninsulfonic acid sodium salt [4.00 parts by weight] and alkyl sulfate sodium salt [0.50 part by weight] were pulverized with a pin mill, mixed well, and powdered. Prepare a mixture.

A shirasu balloon (65.25 parts by weight) sized as in Formulation Example 1 was charged, and 50 g of spindle oil (14.00 parts by weight) was used in the same procedure as in Formulation Examples 1 and 2 above. To prepare a solid pesticide formulation enclosing the pesticide formulation.

Comparative Formulation Example l 1- (2-Chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) bulk [8.87 parts by weight] Methyl [alpha]-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -O-toluate (10.1%) [6.24 parts by weight], 1- (4,6-dimethoxypyrimidine) -2-yl) -3- [1-Methyl-4- (2-methyl-2H-tetrazol-5-yl) pyrazol-5-ylsulfonyl] urea (4.93%) Part], a raw material of 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (84.8%) [11.67 parts by weight], alkylnaphthalenesulfonic acid sodium salt [4.00 parts by weight] as well as Lignin sulfonic acid sodium salt [2.00 parts by weight] is pulverized with a pin mill and mixed well to prepare a powdery mixture.

A shirasu balloon (52.66 parts by weight) sized as in Formulation Example 1 was charged, and 50 g was prepared by the same procedure as in Preparation Examples 1 and 2 above using spindle oil [12.00 parts by weight]. To prepare a solid pesticide formulation enclosing the pesticide formulation.

Comparative Preparation Example 2 1- (2-Chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone (71.0%) bulk [8.87 parts by weight] 1- (2-chloroimidazo [1,2-a] pyridin-3-ylsulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea (31.0%) 09 parts by weight], a raw material of 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (84.8%) [24.76 parts by weight], dioctyl sulfosuccinate sodium salt [2.00 parts by weight Parts) and ligninsulfonic acid sodium salt [10.00 parts by weight] are ground with a pin mill and mixed well to prepare a powdery mixture.

A shirasu balloon [38.28 parts by weight] sized as in Formulation Example 1 was charged, and 50 g of the shirasu balloon was charged in the same procedure as in Preparation Examples 1 and 2 above using spindle oil [10.00 parts by weight]. To prepare a solid pesticide formulation enclosing the pesticide formulation.

Test Example 1 (Test of dispersibility) Diameter 9c was placed in a glass water tank of 74 cm long and 120 cm wide.
Fourteen Petri dishes having a depth of 1.8 cm and a depth of 1.8 cm were arranged as shown in FIG. 1, 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. After one hour, gently remove the Petri dish,
The water on the Petri dish was collected in a volumetric flask, and the Petri dish was washed with acetonitrile, and the washing solution was collected in the volumetric flask.
After the volume of the volumetric flask was made constant, the weight of the pesticidal active ingredient on each Petri dish was determined by HPLC. Further, the average weight of the pesticidal active ingredient (1- (2-chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone) and the dispersion coefficient of the weight of the active ingredient are determined by the following formulas. Was.

[0057]

(Equation 1)

Xi = weight of pesticidal active ingredient in Petri dish (X1,
X2 ... Xi ... Xn).

N = 14 = number of Petri dishes.

Formulation Example 5, Comparative Formulation Example 1 and Comparative Formulation Example 2
In the same manner as in Test Example 1, the average weight of the pesticidally active ingredient (1- (2-chlorophenyl) -4- (N-cyclohexyl-N-ethylcarbamoyl) -5 (4H) -tetrazolinone) and the pesticidally effective The dispersion coefficient of the weight of the component was determined. The results are shown in Table 1 below.

[0061]

[Table 1]

Test Example 2 (Dispersibility Test in Paddy Field) As shown in FIG. 2, seven bottles each having a diameter of 7.5 cm were arranged as obstacles in a concrete pool having a length of 4.1 m and a width of 2.6 m. Then, 500 liters of water was charged so that the water depth was about 5 cm. Next, a water-soluble PV prepared according to Formulation Example 2
After dropping 6.0 g of the preparation packaged in the bag of the A film into the pool, a certain amount of water was collected with time from the point shown in FIG. 2 and the pesticidal active ingredient (1- (2-chlorophenyl) -4) was collected.
-(N-cyclohexyl-N-ethylcarbamoyl)-
5 (4H) -tetrazolinone) was measured and the state of dispersion was investigated.

The tests of Formulation Example 5, Comparative Formulation Example 1 and Comparative Formulation Example 2 were conducted in the same manner. Table 2 shows the results.

[0064]

[Table 2]

[0065]

[Table 3]

Test Example 3 (Herbicidal effect on paddy field weeds and phytotoxicity on transplanted paddy rice) Paddy fields where weeds (Tanubie, Tamaya-tsuri, Firefly, Konagi and broadleaf weeds) naturally occur were replaced by leveling.
The area was divided into 0 m2 (10 mx 10 m). Three rice plants (variety: Nipponbare, 2.5 leaf stage, plant height 15 cm) were transplanted as one strain and maintained at a water depth of about 4 cm. When weeds emerged and the rice millet reached the 1.5 leaf stage, 50 g of the formulation packaged in a bag of the water-soluble PVA film prepared according to Formulation Example 2 was charged. The state of dispersion after introduction was investigated by visual observation.

The input location 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 two weeks and three weeks after the 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 tests of Formulation Example 5, Comparative Formulation Example 1 and Comparative Formulation Example 2 were conducted in the same manner.

Table 3 shows the results.

[0072]

[Table 4]

[0073]

[Table 5]

[0074]

[Table 6]

[0075]

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.

[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 on a paddy field in Test Example 3 (herbicidal effect on paddy field weeds and phytotoxicity on transplanted paddy rice).

Claims (6)

[Claims] 1. The method of claim 1, wherein the apparent specific gravity is less than 1 and about 500
A powder mixture of a pesticidal active substance, an alkylnaphthalenesulfonate, a dialkylsulfosuccinate and a ligninsulfonate is added to a grain nucleus of calcined pumice having a particle size in a range of about 1 μm to about 1400 μm, and spindle oil. A water-applied pesticide formulation having a good floating running property, characterized in that the pesticide formulation is supported and coated by using. 2. The water-applied pesticide preparation according to claim 1, wherein the powdery mixture further contains an alkyl sulfate salt. 3. The water-applied agricultural chemical preparation according to claim 1, wherein the powdery mixture further contains a water-soluble extender. 4. The water-applied agricultural chemical preparation according to claim 3, wherein the easily water-soluble bulking agent is urea. 5. A solid pesticide preparation comprising the pesticide preparation according to claim 1, which is packaged with a water-soluble film at a ratio of about 10 g to about 200 g per package. 6. An apparent specific gravity of less than 1 and about 500
A powder mixture of a pesticidal active substance, an alkylnaphthalenesulfonate, a dialkylsulfosuccinate and a ligninsulfonate is added to a grain nucleus of calcined pumice having a particle size in a range of about 1 μm to about 1400 μm, and spindle oil. A method for producing a water-applied pesticide formulation having good floating running properties, wherein the pesticide formulation is supported and coated.