JP4487561B2 - Granules for dusting machine processing at sowing - Google Patents

Description

  The present invention relates to a granule for processing a duster at the time of sowing.

In recent years, new formulations and application methods that emphasize labor saving have been rapidly developed against the background of the rationalization of agricultural management. As one of these techniques, attention has been paid to the seeding treatment technique of rice seeds.
Conventionally, as a processing technique of granule in the field of paddy rice, many insecticides / bactericides and mixed granule thereof have been commercialized and spread mainly on a method applied by farmers themselves on the day of transplanting to 3 days before. However, since the application period of the granules in these technologies overlaps with the busy period just before rice planting, and the operation of applying the granules is a heavy labor burden for medium- to large-scale farms, further labor-saving technology is eagerly desired. It had been.

Plant Protection, Vol. 54, No. 1, pp. 38-39 (2000)

  Under such circumstances, a treatment technology that has been rapidly spread in recent years is a treatment technology at the time of sowing of a seedling box granule. This technology is positioned as a groundbreaking control means by treating seedling box granules simultaneously in a series of sowing processes, and each machine manufacturer develops these seeding dusters one after another. It came to. However, even if conventional granule in the field of paddy rice is applied to the apparatus as it is, it may be difficult to stably apply a predetermined amount of the granule.

As a result of intensive studies under these circumstances, the present inventors have made a granule having a specific shape, so that a predetermined amount of the granule can be stably used even when a dusting machine is used. Has been found to be applicable to the present invention.
That is, the present invention
1. A granule containing an agrochemical active ingredient, and a granule for treatment of a dusting machine at the time of seeding (hereinafter, referred to as a granule having a long grain length of 3 mm or more is 10% by weight or less of the total granule (hereinafter, Sometimes referred to as the present granule.);
2. 2. When seeding at the time of sowing according to the preceding item 1, characterized in that it is obtained using an extrusion granulator provided with a screen having a large number of perforations having a maximum diameter of 0.7 mm or more and 3 mm or less, and has a cylindrical shape. Granules for the processing of the dusting machine;
3. In the shape of the whole granule, the ratio of the long grain length of the granule to the maximum diameter on the upper surface or the bottom surface of the granule is included in the range of 1 to 6, at the time of sowing according to the preceding item 1 or 2, Granules for the processing of the dusting machine;
4). The number of granules per gram of the granule is 670 or more, the granule for treating the dusting machine at the time of sowing according to the preceding item 1, 2 or 3,
5). 5. A method for applying a granule, comprising the step of applying the granule for treatment of a dusting machine at the time of sowing according to any one of the preceding items 1 to 4 in a seedling box using a powdering machine at the time of sowing rice seeds. (Hereafter, it may be described as the method of the present invention.);
Etc. are provided.

  The granule of the present invention can stably apply a predetermined amount of granule even when a seeding machine is used.

Examples of the pesticidal active ingredient used in the present invention include biologically active compounds contained as active ingredients in insecticides, insect growth regulators, fungicides, herbicides, plant growth regulators, etc., and these compounds Can be used alone or in admixture of two or more.
Specifically, for example, the following pesticidal active ingredients can be exemplified, but of course not limited thereto. As a matter of course, those geometric isomers, optical isomers and the like are also included.

  O, O-dimethyl O- (3-methyl-4-nitrophenyl) phosphorothioate, O, O-dimethyl O- (3-methyl-4- (methylthio) phenyl) phosphorothioate, O, O-diethyl-O-2- Isopropyl-6-methylpyrimidin-4-yl phosphorothioate, O, O-diethyl-O-3,5,6-trichloro-2-pyridyl phosphorothioate, O, S-dimethylacetylphosphoramidothioate, S-2,3- Dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl O, O-dimethyl phosphorodithioate, O, O-diethyl S-2-ethylthioethyl phosphorodithioate, 2, 2-dichlorovinyldimethylphosphate, O-ethyl O-4- (methylthio) phenyl S-propyl phosphoro Thioate, O-4-cyanophenyl O, O-dimethyl phosphorothioate, 2-methoxy-4H-1,3,2-benzodioxaphosphorin-2-sulfide, O, O-dimethyl-S- (N-methylcarbamoyl) Methyl) dithiophosphate, ethyl 2-dimethoxyphosphinothioylthio (phenyl) acetate, diethyl (dimethoxyphosphinothioylthio) succinate, dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate, S-3,4 -Dihydro-4-oxo-1,2,3-benzotriazin-3-ylmethyl O, O-dimethyl phosphorodithioate, dimethyl-{(E) -1-methyl-2- (methylcarbamoyl) vinyl) phosphate, O, O, O ′, O′-tetraethyl-S, S′-methylenebis (phosphorus Horojichioeto), O-2,6-dichloro-4-methylphenyl O, organophosphorus compounds such as O- dimethyl phosphorothioate,

2-sec-butylphenylmethylcarbamate, ethyl N- {2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl (methyl) aminothio} -N-isopropyl-β-alaninate, 2-isopropoxyphenyl -N-methyl carbamate, 2,3-dihydro-2,2-dimethyl-7-benzo [b] furanyl N-dibutylaminothio-N-methyl carbamate, 1-naphthyl-N-methyl carbamate, S-methyl-N -(Methylcarbamoyloxy) thioacetimidate, 2- (ethylthiomethyl) phenylmethylcarbamate, 2-methyl-2- (methylthio) propionaldehyde O-methylcarbamoyloxime, N, N-dimethyl-2-methylcarbamoyloxy Imino-2- (methylthio) a Toamido, S-4-phenoxy-butyl -N, carbamate compounds such as N- dimethyl thiocarbamate,

2- (4-Ethoxyphenyl) -2-methyl-1- (3-phenoxybenzyl) oxypropane, (RS) -α-cyano-3-phenoxybenzyl (RS) -2- (4-chlorophenyl) -3- Methyl butyrate, (S) -α-cyano-3-phenoxybenzyl (S) -2- (4-chlorophenyl) -3-methylbutyrate, (RS) -α-cyano-3-phenoxybenzyl 2,2, 3,3-tetramethylcyclopropanecarboxylate, (RS) -α-cyano-3-phenoxybenzyl (1RS) -cis, trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxy 3-phenoxybenzyl (1RS) -cis, trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropane carbonate Boxylate, (RS) -α-cyano-3-phenoxybenzyl (1RS, 3Z) -cis-3- (2-chloro-3,3,3-trifluoroprop-1-enyl) -2,2-dimethylcyclo Propanecarboxylate, (S) -α-cyano-3-phenoxybenzyl (1R) -cis-3- (2,2-dibromovinyl) -2,2-dimethylcyclopropanecarboxylate, (RS) -α-cyano -3-phenoxybenzyl (RS) -2,2-dichloro-1- (4-ethoxyphenyl) cyclopropanecarboxylate, α-cyano-3-phenoxybenzyl N- (2-chloro-α, α, α-tri Fluoro-p-tolyl) -D-valinate, 2-methyl-3-phenylbenzyl (1RS, 3Z) -cis-3- (2-chloro-3,3,3-tri (Luoro-1-propenyl) -2,2-dimethylcyclopropanecarboxylate, 2- (4-bromodifluoromethoxyphenyl) -2-methyl-1- (3-phenoxybenzyl) methylpropane, (S) -α-cyano -3-phenoxybenzyl (1R) -cis-3- (1,2,2,2-tetrabromoethyl) -2,2-dimethylcyclopropanecarboxylate, (4-ethoxyphenyl)-{3- (4- Fluoro-3-phenoxyphenyl) propyl} dimethylsilane, 3-phenoxybenzyl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (RS)- α-Cyano-3-phenoxybenzyl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl) 1-propenyl) cyclopropanecarboxylate, 5-benzyl-3-furylmethyl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (S) -Α-Cyano-3-phenoxybenzyl (1R, 3Z) -cis- (2,2-dimethyl-3- {3-oxo-3- (1,1,1,3,3,3-hexafluoropropyloxy) ) Propenyl} cyclopropanecarboxylate, (RS) -α-cyano-4-fluoro-3-phenoxybenzyl 3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate, 2,3,5 , 6-Tetrafluoro-4-methylbenzyl (1RS, 3Z) -cis-3- (2-chloro-3,3,3-trifluoro-1-propeni ) -2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluorobenzyl (1R) -trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate 3,4,5,6-tetrahydrophthalimidomethyl (1RS) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (RS) -2- Methyl-4-oxo-3- (2-propenyl) -2-cyclopenten-1-yl (1RS) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropane Carboxylate, (S) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopenten-1-yl (1R) -cis, trans-2 2-Dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (RS) -1-ethynyl-2-methyl-2-pentenyl (1R) -cis, trans-2,2-dimethyl -3- (2-methyl-1-propenyl) cyclopropanecarboxylate, 2,5-dioxo-3- (2-propynyl) imidazolidin-1-ylmethyl (1R) -cis, trans-2,2- Dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, 5- (2-propynyl) furfuryl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1 -Propenyl) cyclopropanecarboxylate, 5- (2-propynyl) furfuryl 2,2,3,3-tetramethylcyclopropanecarboxylate, etc. Lloyd-based compounds,

Thiadiazine derivatives such as 2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazin-4-one, nitroimidazolidine derivatives, S, S ′-(2-dimethylaminotrimethylene) bis (thiocarbamate) ), Nereistoxin derivatives such as N, N-dimethyl-1,2,3-trithian-5-ylamine, S, S′-2-dimethylaminotrimethylenedi (benzenethiosulfonate), N-cyano- N-cyanoamidine derivatives such as N'-methyl-N '-(6-chloro-3-pyridylmethyl) acetamidine, 6,7,8,9,10,10-hexachloro-1,5,5a, 6 9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine oxide, 1,2,3,4,5,6-hexachloro Chlorinated hydrocarbon compounds such as chlorohexane, 1,1-bis (4-chlorophenyl) -2,2,2-trichloroethanol, 1- {3,5-dichloro-4- (3-chloro-5- Trifluoromethylpyridin-2-yloxy) phenyl} -3- (2,6-difluorobenzoyl) urea, 1- (3,5-dichloro-2,4-difluorophenyl) -3- (2,6-difluorobenzoyl) ) Urea, 1- {4- (2-chloro-4-trifluoromethylphenoxy) -2-fluorophenyl} -3- (2,6-difluorobenzoyl) urea and other benzoylphenylurea compounds, N, N ′ -{(Methylimino) dimethylmethyridin} -di-2,4-xylysine, N '-(4-chloro-2-methylphenyl) -N, N-dimethylmethynimidamide, etc. Amidine derivative, N- (2,6-diisopropyl-4-phenoxyphenyl) thiourea derivatives such-N'-t-butyl carbodiimide, N- phenylpyrazole compounds,

5-methoxy-3- (2-methoxyphenyl) -1,3,4-oxadiazol-2- (3H) -one, isopropyl 4,4'-dibromobenzylate, 4-chlorophenyl 2,4,5- Trichlorophenylsulfone, S, S-6-methylquinoxaline-2,3-diyldithiocarbonate, 2- (4-tert-butylphenoxy) cyclohexylprop-2-ylsulfite, bis {tris (2-methyl-2 -Phenylpropyl) tin} oxide, (4RS, 5RS) -5- (4-chlorophenyl) -N-chlorohexyl-4-methyl-2-oxo-1,3-thiazolidine-3-carboxamide, 3,6-bis (2-Chlorophenyl) -1,2,4,5-tetrazine, 2-tert-butyl-5- (4-tert-butylbenzyl) E) -4-chloropyridazin-3 (2H) -one, tert-butyl (E) -4-[(1,3-dimethyl-5-phenoxypyrazol-4-yl) methyleneaminooxymethyl] benzoate, N-- 4-tert-butylbenzyl) -4-chloro-3-ethyl-1-methyl-5-pyrazolecarboxamide, tetranactin, dinactin, trinactin, 5-chloro-N- [2- {4- (2-ethoxyethyl)- 2,3-dimethylphenoxy} ethyl] -6-ethylpyrimidin-4-amine], milbemectin, abamectin, ivermectin, azadirachtin [AZAD], 5-methyl [1,2,4] triazolo [3,4-b] benzo Thiazole, methyl 1- (butylcarbamoyl) benzimidazole-2-carbamate, 6- (3 5-Dichloro-4-methylphenyl) -3 (2H) -pyridazinone, 1- (4-chlorophenoxy) -3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl) butanone (E) -4-chloro-2- (trifluoromethyl) -N- [1- (imidazol-1-yl) -2-propoxyethylidene] aniline, 1- [N-propyl-N- [2- ( 2,4,6-trichlorophenoxy) ethyl] carbamoyl] imidazole, (E) -1- (4-chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) -1-penten-3-ol, 1- (4-chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) pentan-3-ol, (E)- 1- (2,4-dichroic Rophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) -1-penten-3-ol, 1- (2,4-dichlorophenyl) -4,4-dimethyl -2- (1H-1,2,4-triazol-1-yl) pentan-3-ol, 4- [3- (4-tert-butylphenyl) -2-methylpropyl] -2,6-dimethylmorpholine 2- (2,4-dichlorophenyl) -1- (1H-1,2,4-triazol-1-yl) hexane-2-ol, O, O-diethyl O-2-quinoxalinyl phosphorothioate, O- (6 -Ethoxy-2-ethyl-4-pyrimidinyl) O, O-dimethyl phosphorothioate, 2-diethylamino-5,6-dimethylpyrimidin-4-yl dimethylcarbamate, 4- (2,4- Chlorobenzoyl) -1,3-dimethyl-5-pyrazolyl p-toluenesulfonate, 4-amino-6- (1,1-dimethylethyl) -3-methylthio-1,2,4-triazine-5 (4H) -One, 2-chloro-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4,6 -Dimethoxypyrimidin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4,6-dimethylpyrimidin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N- [ (4-Methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2 Ethoxycarbonyl-N-[(4-chloro-6-methoxypyrimidin-2-yl) aminocarbonyl] benzenesulfonamide, 2- (2-chloroethoxy) -N-[(4-methoxy-6-methyl-1, 3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4,6-dimethoxypyrimidin-2-yl) aminocarbonyl] phenylmethanesulfonamide, 2-methoxycarbonyl- N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] thiophene-3-sulfonamide, 4-ethoxycarbonyl-N-[(4,6-dimethoxypyrimidine- 2-yl) aminocarbonyl] -1-methylpyrazole-5-sulfonamide, 2- [4,5- Hydro-4-methyl-4- (1-methylethyl) -5-oxo-1H-imidazol-2-yl] -3-quinolinecarboxylic acid, 5-ethyl-5,8-dihydro-8-oxo [1, 3] Dioxolo [4,5-g] quinoline-7-carboxylic acid, 2- [4,5-dihydro-4-methyl-4- (1-methylethyl) -5-oxo-1H-imidazol-2-yl ] -5-ethyl-3-pyridinecarboxylic acid, methyl 6- (4-isopropyl-4-methyl-5-oxoimidazolin-2-yl) -m-toluate, methyl 2- (4-isopropyl-4-methyl-) 5-oxoimidazolin-2-yl) -p-toluate, 2- (4-isopropyl-4-methyl-5-oxoimidazolin-2-yl) nicotinic acid, N- (4-chlorophenyl) methyl-N Cyclopentyl-N′-phenylurea, (RS) -2-cyano-N-[(R) -1 (2,4-dichlorophenyl) ethyl] -3,3-dimethylbutyramide, N- (1,3-dihydro -1,1,3-trimethylisobenzofuran-4-yl) -5-chloro-1,3-dimethylpyrazole-4-carboxamide, N- [2,6-dibromo-4- (trifluoromethoxy) phenyl] 2-methyl-4- (trifluoromethyl) -5-thiazolcarboxamide, 2,2-dichloro-N- [1- (4-chlorophenyl) ethyl] -3-methylcyclopropanecarboxamide, methyl ( E) -2-2-2-6- (2-Cyanophenoxy) pyrimidin-4-yloxy-phenyl-3-methoxyacrylate, 5-methyl-1,2,4-triazo B [3,4-b] benzothiazole, 3-allyloxy-1,2-benzisothiazole-1,1-dioxide, diisopropyl = 1,3-dithiolane-2-ylidene-malonate, O, O-dipropyl-O -4-methylthiophenyl phosphate, (±) -5-amino-1- (2,6-dichloro-α, α, α-trifluoro-p-toluyl) -4-trifluoromethylsulfinylpyrazole-3-carbohydrate Nitrile etc.

The concentration of the pesticidal active ingredient in the granule is not particularly limited, but is usually about 0.01 to 50% by weight, preferably about 0.1 to 30% from the viewpoints of handleability and biological activity. % By weight, more preferably about 0.5 to 10% by weight.
Furthermore, other additives such as carriers, solvents, preservatives, excipients, stabilizers, efficacy enhancers, colorants, fragrances, and builders that are generally used can be added as appropriate to the granules of the present invention.

  The granule of the present invention is suitable at the time of sowing rice seeds, for example, when applied in a seedling box using a granulator, and the application rate is usually about 10 to 100 g / box, preferably about 20 ˜70 g / box, more preferably about 50 g / box.

  In the granule of the present invention, “long grain length of 3 mm or more” means the longest possible diameter. For example, when the shape of the granule of the present invention is a columnar shape, it corresponds to the length between diagonal vertices in the cross section in the cross section having the maximum diameter on the top surface or the bottom surface (diameter on the top surface or the bottom surface) on one side, When the shape of the granule of the present invention is a quadrangular prism, the length between diagonal vertices in the cross section in the cross section having the maximum diameter on the top surface or bottom surface (the length between diagonal vertices on the top surface or bottom surface) on one side. Equivalent to.

In the shape of the whole granule of the present granule, it is preferable that the ratio of the long grain length of the granule to the maximum diameter on the upper surface or the bottom surface of the granule is included in the range of 1 to 6.
In the number of grains of the present granule, the number of grains per 1 g of the granule is preferably 670 or more.

What is necessary is just to manufacture this invention granule as follows, for example.
First, the composition components are mixed using a nauter mixer or the like, and then kneaded using a mortar, nauter mixer, kneader or the like while performing an appropriate amount of water to obtain a kneaded product. Granules are obtained by granulating the obtained kneaded product using an extrusion granulator such as a basket-type extrusion granulator, a horizontal extrusion granulator, a twin dome gran or the like. The granule of the present invention (granular wettable powder) can be produced by drying the obtained granule at room temperature to 150 ° C. using a dryer such as a fluidized bed dryer. The screen having a large number of perforations used during extrusion granulation usually has a diameter (maximum diameter) of about 0.3 mm or more, preferably about 0.5 mm or more, more preferably about 0.7 mm or more, And about 3 mm or less, Preferably about 2 mm or less, More preferably, about 1.5 mm or less is used. Then, if necessary, coarsely pulverized to a desired size (for example, obtained using an extrusion granulator provided with a screen having a number of perforations having a maximum diameter of 0.9 mm, and having a cylindrical shape. When the granulated product is dried at 80 ° C., Nara type pulverizer: coarse pulverization at a rotation speed of 1100 rpm or more), sieving (for example, sieving once at 1190 μm), etc. it can. When a Nara type pulverizer is used for coarse pulverization, the proportion of the granules having a long grain length of 3 mm or more in the total granules tends to increase as the rotational speed decreases. When only the above residue is coarsely pulverized and re-screened, the proportion of the granules having a long grain length of 3 mm or more in the total granules tends to increase.

  EXAMPLES Hereinafter, although an Example, a comparative example, and a test example are given and this invention is demonstrated further in detail, this invention is not limited to these.

Example 1
3 parts by weight of (RS) -2-cyano-N-[(R) -1 (2,4-dichlorophenyl) ethyl] -3,3-dimethylbutyramide and 0.76 parts by weight of Toxeal GU-N (dioxide dioxide) Silicon (manufactured by Tokuyama Soda Co., Ltd.) was mixed well with a ribbon mixer, and then the mixture was dry-pulverized with an air mill (average particle size 3 μm). The dry pulverized product and 2 parts by weight of Gohsenol GL-05S (polyvinyl alcohol: manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), 1 part by weight of amylol No. 1 (starch decomposition product: manufactured by Nissho Chemical Co., Ltd.), 1 Part by weight of sodium hexametaphosphate, 20 parts by weight of bentonite Fuji (Bentonite: manufactured by Toyoshun Mining Co., Ltd.) and 71 parts by weight of Katsuyama Shan Clay S (Kaolin clay: manufactured by Katsumiyama Mining Co., Ltd.) The mixture (A) was obtained by mixing well in a termixer.
0.6 parts by weight of (±) -5-amino-1- (2,6-dichloro-α, α, α-trifluoro-p-toluyl) -4-trifluoromethylsulfinylpyrazole-3-carbonitrile, 0.015 parts by weight of Kunipia G (Bentonite: manufactured by Kunimine Kogyo Co., Ltd.), 0.002 parts by weight of Kelzan S (Xanthan Gum: manufactured by Sanki Co., Ltd.), 0.002 parts by weight of antifoam CE (silicone blended) Product: Dow Corning Asia Co., Ltd.) and 0.003 parts by weight of Biohope L (mixture of isothiazolone and bronopol: produced by Kay Kasei Co., Ltd.) are thoroughly mixed in 1.1 parts by weight of water, The mixture was wet pulverized using a dyno mill (average particle size 3 μm). The wet pulverized product was put in 24 parts by weight of warm water and mixed well to obtain a mixture (B).
The mixture (A) and the mixture (B) thus obtained were mixed and kneaded in a Nauter mixer, and then extruded by a vertical extrusion granulator equipped with a 0.9 mm screen. A granulated product was obtained. After the obtained granulated product was dried at 80 ° C., the grain length was aligned using a Nara type pulverizer (rotation speed: 1700 rpm). Thereafter, the obtained granulated material was sieved at 1190 μm, and fine powder and fine particles were removed with an air classifier to obtain the intended granule. When the obtained granules were examined, the number of grains was 950 grains / g, and the long grain length of 3 mm or more was 0.5% by weight of the total granules. On the other hand, the ratio (the shape of the whole granule) included the ratio of the long grain length of the granule to the maximum diameter on the top surface or the bottom surface of the granule in the range of about 1 to 6.

Example 2
Mixing and kneading the mixture (A) and mixture (B) obtained in the same manner as in Example 1 in a Nauter mixer, and then extruding with a vertical extrusion granulator equipped with a 0.9 mm screen. A granulated product was obtained. The obtained granulated product was dried at 80 ° C., and then its particle length was aligned using a Nara type pulverizer (rotation speed: 1500 rpm). Thereafter, the obtained granulated material was sieved at 1190 μm, and fine powder and fine particles were removed with an air classifier to obtain the intended granule. When the obtained granules were examined, the number of grains was 769 grains / g, and the long grain length of 3 mm or more was 1.3% by weight of the total granules. On the other hand, the ratio (the shape of the whole granule) included the ratio of the long grain length of the granule to the maximum diameter on the top surface or the bottom surface of the granule in the range of about 1 to 6.

Example 3
Mixing and kneading the mixture (A) and mixture (B) obtained in the same manner as in Example 1 in a Nauter mixer, and then extruding with a vertical extrusion granulator equipped with a 0.9 mm screen. A granulated product was obtained. After the obtained granulated product was dried at 80 ° C., the grain length was aligned using a Nara type pulverizer (rotation speed: 1100 rpm). Thereafter, the obtained granulated material was sieved at 1190 μm, and fine powder and fine particles were removed with an air classifier to obtain the intended granule. When the obtained granules were examined, the number of grains was 671 grains / g, and the long grain length of 3 mm or more was 4.2% by weight of the total granules. On the other hand, the ratio (the shape of the whole granule) included the ratio of the long grain length of the granule to the maximum diameter on the top surface or the bottom surface of the granule in the range of about 1 to 6.

Example 4
Mixing and kneading the mixture (A) and mixture (B) obtained in the same manner as in Example 1 in a Nauter mixer, and then extruding with a vertical extrusion granulator equipped with a 0.9 mm screen. A granulated product was obtained. The obtained granulated material was dried at 80 ° C. and then sieved at 1190 μm. In addition, about the granulated material which remained on the sieve, after aligning the particle length using a Nara type | mold grinder (rotation speed 1500rpm), the obtained granulated material was sieved again by 1190 micrometers. The granulated material obtained by sieving both was removed with a wind classifier to obtain fine particles and fine particles. When the obtained granules were examined, the number of grains was 676 grains / g, and the long grain length of 3 mm or more was 8.1% by weight of the total granules. On the other hand, the ratio (the shape of the whole granule) included the ratio of the long grain length of the granule to the maximum diameter on the top surface or the bottom surface of the granule in the range of about 1 to 6.

Comparative Example 1
Mixing and kneading the mixture (A) and mixture (B) obtained in the same manner as in Example 1 in a Nauter mixer, and then extruding with a vertical extrusion granulator equipped with a 0.9 mm screen. A granulated product was obtained. The obtained granulated material was dried at 80 ° C. and then sieved at 1190 μm. In addition, about the granulated material which remained on the sieve, after aligning the particle length using a Nara type | mold grinder (rotation speed 1100 rpm), the obtained granulated material was sieved again by 1190 micrometers. The granulated material obtained by sieving both was removed with a wind classifier to obtain fine particles and fine particles. When the obtained granules were examined, the number of grains was 655 grains / g, and the long grain length of 3 mm or more was 13.4% by weight of the total granules. On the other hand, the ratio (the shape of the whole granule) included the ratio of the long grain length of the granule to the maximum diameter on the top surface or the bottom surface of the granule in the range of about 1 to 6.

Comparative Example 2
Mixing and kneading the mixture (A) and mixture (B) obtained in the same manner as in Example 1 in a Nauter mixer, and then extruding with a vertical extrusion granulator equipped with a 0.9 mm screen. A granulated product was obtained. The obtained granulated material was dried at 80 ° C. and then sieved at 1190 μm. In addition, about the granulated material which remained on the sieve, after aligning the particle length using a Nara type | mold grinder (rotation speed 750rpm), the obtained granulated material was sieved again at 1190 micrometers. The granulated material obtained by sieving both was removed with a wind classifier to obtain fine particles and fine particles. When the obtained granules were examined, the number of grains was 588 grains / g, and the long grain length of 3 mm or more was 19.2% by weight of the total granules. On the other hand, the ratio (the shape of the whole granule) included the ratio of the long grain length of the granule to the maximum diameter on the top surface or the bottom surface of the granule in the range of about 1 to 6.

Test example 1
A granule test of the granule of the present invention was carried out using a commercially available shaker-type seedling box application drug spraying device (manufactured by Bizen, model KS-10: shutter type granulator).
The test was conducted on a standard sample having a specific shape (a granule having a long grain length of 3 mm or more is 0.6% by weight of the whole granule, and the maximum diameter on the top or bottom of the granule in the form of the whole granule. The ratio of the long grain length of the granule to 1) is set so that 50 g is applied per seedling box, and then the test granules are dispersed without changing the setting. A test was conducted to examine how much the application rate of the test granule per 1 seedling box (amount of application) deviates from the set value under the treatment conditions of 200 boxes / hour and 300 boxes / hour, respectively. The results are shown below.

  As shown in Table 1, it is possible to stably granulate a desired application rate (amount of drug application) in which the granule of the present invention is applied to a seedling box using a powdering machine when sowing rice seeds.

Test example 2
A granule test of the granule of the present invention was carried out using a commercially available seedling box medicine hopper (manufactured by Tintech, model SDP-33S: roller type granulator).
The test was conducted using a standard sample having a specific shape (a granule having a long grain length of 3 mm or more is 1.3% by weight of the whole granule, and the maximum diameter on the top or bottom surface of the granule in the form of the whole granule. The ratio of the long grain length of the granule to 1) is set so that 50 g is applied per seedling box, and then the test granules are dispersed without changing the setting. A test was conducted to examine how much the application rate of the test granule per 1 seedling box (amount of application) deviates from the set value under the treatment conditions of 200 boxes / hour and 300 boxes / hour, respectively. The results are shown below.

  As shown in the above table, it is possible to stably granulate a desired application rate in which the granule of the present invention is applied to a seedling box using a granulator when sowing rice seeds.

The granule of the present invention can stably apply a predetermined amount of granule even when a seeding machine is used.

Claims (2)

A granule containing an agrochemical active ingredient,
The granule having a long grain length of 3 mm or more is 10% by weight or less of the whole granule ,
It is obtained using an extrusion granulator provided with a screen having a large number of perforations having a maximum diameter of 0.7 mm or more and 3 mm or less, and has a cylindrical shape,
In the shape of the whole granule, the ratio of the long grain length of the granule to the maximum diameter at the top or bottom of the granule is 1 to 6,
A granule for processing a dusting machine at the time of sowing, wherein the number of particles per 1 g of the granule is 670 or more . A method for applying a granule, comprising the step of applying the granule for treating a granulator at the time of sowing according to claim 1 to a seedling box using the granulator at the time of sowing rice seed.