JP5689510B2 - Agrochemical granular composition and agrochemical mixture - Google Patents

Description

  The present invention relates to an agrochemical granular composition, which is an agrochemical granular composition containing an agrochemical active ingredient and a poorly water-soluble or water-insoluble synthetic resin, which can be produced efficiently and simply, and reduces phytotoxicity. Moreover, the present invention relates to an agrochemical granular composition having a long-lasting medicinal effect and an agrochemical mixed preparation.

  Conventionally, for the purpose of making it easy to use and fully exhibiting the control effect, a mixture of agrochemical active ingredients added with a binder and extender is kneaded with a small amount of water and then pulverized into a granulator and then granulated with a granulator. Compositions (granules) are known.

  Examples of such compositions include those obtained by granulating the inner core and then granulating again (Patent Document 1), those prepared separately from an agrochemical active ingredient and a resin coating (Patent Document 2), waxes and carriers. A composition composed of (Patent Document 3) and the like are known.

However, in many cases, it has been necessary to prepare an agrochemical formulation through a complicated process in order to control the elution of an agrochemical active ingredient and to provide an effect of enhancing the sustainability of its efficacy.
Therefore, it has been desired to develop a new agrochemical granular composition that can be produced more efficiently and easily and has a long-lasting medicinal effect.

On the other hand, when applying a pesticide granular composition containing a pesticide active ingredient having a relatively high water solubility, the pesticide active ingredient easily flows out due to rain water or the like, and it is difficult to control the elution of the pesticide active ingredient. In many cases, the effectiveness cannot be utilized effectively. In such a case, plants absorb pesticidal active ingredients at a high concentration, which is likely to cause phytotoxicity.
Therefore, it has been desired to develop an agrochemical formulation having reduced efficacy and stable efficacy even in an agrochemical granular composition containing an agrochemical active ingredient having a relatively high water solubility.

  In relation to the present invention, Patent Document 4 is characterized in that an agrochemical active ingredient, a thermoplastic resin (A) and polyvinyl alcohol (B), iron powder or copper powder (C) are uniformly mixed. Sustained release pesticide granules are described. In the agrochemical granule described in this document, oxidation of the contained iron powder or copper powder (C) is promoted by the presence of water molecules, the volume is increased, and the film-forming substance (thermoplastic resin (A)) is broken. As a result, the pesticidal active ingredient coated with the film-forming substance is gradually eluted, thereby producing a sustained release effect.

Japanese Patent Publication No. 64-4484 JP 2000-86404 A JP 2004-43370 A JP 2002-363003 A

  The present invention has been made in view of the above-described prior art, and can be produced efficiently and simply, and can reduce phytotoxicity, and further can maintain the medicinal effect for a long period of time. It is an object to provide a mixed preparation.

  As a result of diligent research to solve the above problems, the present inventor has found that a synthetic resin having a solubility in 100 g of water at 20 ° C. of 1 g or less, even when using an agrochemical active ingredient having a saturated solubility in water of 25 ° C. of 500 ppm or more By using a mineral carrier, an agrochemical granular composition can be produced efficiently and simply, and the obtained agrochemical granular composition has been found to reduce phytotoxicity and to maintain its medicinal effect for a long period of time. It came to be completed.

That is, the present invention
[1] Agrochemical active ingredient having a saturation solubility in water of 25 ° C. of 500 ppm or more,
A pesticide granular composition comprising a synthetic resin having a solubility in 100 g of water at 20 ° C. of 1 g or less as a binder, and a mineral carrier,
[2] The agricultural chemical granular composition according to [1], further comprising a thickener,
[3] The agrochemical granular composition according to [1] or [2], wherein the agrochemical active ingredient is at least one selected from neonicotinoid compounds,
[4] Any one of [1] to [3], wherein the pesticidal active ingredient is at least one selected from the group consisting of nitenpyram, imidacloprid, acetamiprid, thiamethoxam, clothianidin, thiacloprid, and dinotefuran. The described agrochemical granular composition,
[5] The agrochemical active ingredient according to any one of [1] to [4], wherein the agrochemical active ingredient is acetamiprid.

The present invention also provides
[6] The synthetic resin is an isobutylene-maleic anhydride copolymer, acrylonitrile-butadiene-styrene copolymer, acrylonitrile-chlorinated polyethylene styrene copolymer, acrylonitrile-ethylene-styrene copolymer, acrylonitrile-styrene copolymer. , Acrylonitrile-styrene-acrylic acid copolymer, methylmethacrylic acid-butylene-styrene copolymer, ethylene-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl acetate-vinyl chloride graft polymer, ethylene -Vinyl alcohol copolymer, ketone resin, polyacrylonitrile, polyacetal, polyamide, polylactic acid, poly ε-caprolactam, polyvinyl acetate, polystyrene, polyparavinylphenol, polyvinyl butyral, polyvinyl The pesticide granular composition according to any one of [1] to [5], which is at least one selected from the group consisting of lumar, polybutadiene, polymethyl methacrylate, novolac resin, and maleic acid resin, The present invention
[7] The present invention relates to a pesticide mixed preparation obtained by mixing the pesticide granular composition according to any one of [1] to [6] and another pesticide granular composition.

  ADVANTAGE OF THE INVENTION According to this invention, the pesticidal granular composition which can be manufactured efficiently and simply, reduction of a phytotoxicity, and a medicinal effect continues for a long period of time, and an agrochemical mixed formulation are provided.

It is a schematic diagram which shows the method of performing a dissolution test. It is a figure which shows the result of a dissolution test. The horizontal axis represents fractionation (5 ml / time), and the vertical axis represents elution rate (%).

  Hereinafter, the granular agricultural chemical composition and the mixed agricultural chemical formulation of the present invention will be described in detail.

(1) Agrochemical active ingredient The agrochemical active ingredient used for this invention is an agrochemical active ingredient whose saturated solubility with respect to 25 degreeC water is 500 ppm or more.
According to the granular composition of the pesticidal composition of the present invention, it is possible to control the elution of the pesticidal active ingredient even with the pesticidal active ingredient having such a relatively high water solubility, and the stable efficacy can be expressed and the phytotoxicity can be reduced.

  As such an agrochemical active ingredient, (E) -N- (6-chloro-3-pyridylmethyl) -N-ethyl-N′-methyl-2-nitrovinylidenediamine [generic name: nitenpyram, water solubility: about 2000 ppm], (E) -N-[(6-chloro-3-pyridyl) methyl] -N′-cyano-N-methylacetamidine [generic name: acetamiprid, water solubility: 4200 ppm], 1- (6- Chloro-3-pyridylmethyl) -N-nitroimidazolidine-2-ylideneamine [generic name: imidacloprid, water solubility: 510 ppm (20 ° C.)], 3- (2-chloro-1,3-thiazole-5-methyl-1, 3,5-oxadiazinan-4-ylidene [generic name: thiamethoxam, water solubility: 4100 ppm], (E) -1- (2-chloro-1,3-thiazole -5-ylmethyl-3-methyl-2-nitroguanidine [generic name: clothianidin, water solubility: 0.327 g / L (20 ° C.)], 3- (6-chloro-3-pyridylmethyl) -1,3- Neonicotinoid compounds such as thiazolidine-2-ylidenocyanamide (generic name: thiacloprid), (RS) -1-methyl-2-nitro-3- (tetrahydro-3-furylmethyl) guanidine (generic name: dinotefuran) ;

  O, S-dimethyl-N-acetylphosphoramidothioate [generic name: acephate, water solubility: about 650000 ppm], N ′-(4-chloro-o-toluyl) -N, N-dimethylformamide [water solubility : 250 ppm (20 ° C.)], 2,2-dichlorovinyldimethylphosphate [generic name: DDVP, water solubility: about 1000 ppm (room temperature)], etc .; 2,2-dimethyl-1,3-benzodio Xol-4-yl-methylcarbamate / hydrochloride [generic name: bendiocarb, water solubility: 26000 ppm], S, S′-2-dimethylaminotrimethylene-bis (thiocarbamate) [generic name: cartap, water Solubility: 200000 ppm], 2-ethylthiomethylphenylmethylcarbamate [generic name: etiophene Carbamate compounds such as Rub, water solubility: 1800 ppm (20 ° C.)]; S-methyl-N, N-dimethyl-N-methylcarbamoyloxy-1-thiooxamimidate [generic name: oxamyl, water solubility: 280000 ppm ], S-methyl-N- (methylcarbamoyloxy) thioacetimidate [generic name: mesomil, water solubility: 58000 ppm], 1,3-dichloropropene [generic name: DD, water solubility: 2000 ppm], etc. Other insecticidal compounds; and the like.

  Among these, in the present invention, the pesticidal active ingredient is preferably a neonicotinoid compound, and is at least one selected from the group consisting of nitenpyram, imidacloprid, acetamiprid, thiamethoxam, clothianidin, thiacloprid and dinotefuran. It is preferable.

  The content of the pesticidal active ingredient in the pesticidal composition of the present invention is not particularly limited and differs depending on the type of the pesticidal active ingredient, but from the viewpoint of obtaining a preferable sustained release property of the pesticidal active ingredient, it is based on the entire composition. In general, it is 0.1 to 90% by mass, preferably 0.3 to 50% by mass, and more preferably 0.3 to 20% by mass.

(2) Binder The agricultural chemical granular composition of the present invention uses a synthetic resin having a solubility of 1 g or less in 100 g of water at 20 ° C. as a binder. It is not limited to its form such as an emulsion. For example, if the synthetic resin to be used is solid, it may be coarsely pulverized as necessary. Especially, the thermoplastic resin which has adhesiveness with respect to an agrochemical active ingredient is preferable from a viewpoint from which the sustained release effect of the more excellent agrochemical active ingredient is acquired.

Such thermoplastic resins include isobutylene-maleic anhydride copolymer, acrylonitrile-butadiene-styrene copolymer, acrylonitrile-chlorinated polyethylene-styrene copolymer, acrylonitrile-ethylene-styrene copolymer, acrylonitrile-styrene copolymer. Polymer, acrylonitrile-styrene-acrylic acid copolymer, methylmethacrylic acid-butylene-styrene copolymer, ethylene-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl acetate-vinyl chloride graft polymer , Ethylene-vinyl alcohol copolymer, ketone resin, polyacrylonitrile, polyacetal, polyamide, polylactic acid, polyε-caprolactam, polyvinyl acetate, polystyrene, polyparavinylphenol, polyvinyl butyral Polyvinyl formal, polybutadiene, polymethyl methacrylate, at least one can be cited are selected from the group consisting of novolak resins, and maleic acid resin.
Although there is no restriction | limiting in particular as molecular weight of these resin, Preferably, the average molecular weights measured using GPC are 5,000-200,000, More preferably, it is 10,000-100,000.

  The content of the binder is usually 0.1 to 30% by mass, preferably 0, with respect to the total composition from the viewpoint of reducing the phytotoxicity and obtaining an agrochemical granular composition having long-lasting medicinal effects. .3 to 20% by mass, more preferably 0.5 to 10% by mass.

(3) Mineral carrier The mineral carrier used in the present invention includes quartzite clay, kaolinite clay, bentonite, sepiolite, acid clay, talc powder, rholite powder, diatomaceous earth, mica powder and the like.
The mineral carrier is preferably a silica clay, and specific examples thereof include Ohira clay and Ohira clay (coarse particles).
These can be used singly or in admixture of two or more at an appropriate ratio.
The content of the carrier is usually 1 to 99% by mass, preferably 5 to 95% by mass, based on the entire composition.

(4) Other components The agrochemical composition of the present invention may contain other components such as a thickener and a surfactant in addition to the agrochemical active component, the binder and the mineral carrier.

Thickeners used include water-soluble acrylic polymers such as sodium polyacrylate and sodium polymethacrylate; water-soluble vinyl polymers such as polyvinyl alcohol and polyvinylpyrrolidone; polyoxyethylene such as polyoxyethylene and polyoxypropylene Alkylene; Cellulose derivatives such as sodium carboxymethylcellulose, dextrin, hydroxypropylmethylcellulose, methylcellulose, methylethylcellulose, hydroxypropylcellulose; modified starches such as modified starch, carboxymethyl starch, soluble starch; lignin derivatives such as sodium ligninsulfonate; gum arabic , Xanthan gum, tragacanth gum, guar gum, carrageenan, alginic acid, sodium alginate and other polysaccharides; casein, casein lime, zera Down, proteins such as collagen;
Etc.
Content of a thickener is 0.1-20 mass% normally with respect to the whole composition, Preferably it is 0.2-10 mass%.

Surfactants used include soaps, polyoxyethylene castor oil ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene polyoxypropylene Ether, polyoxyethylene distyrenated phenyl ether, polyoxyethylene alkyl ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene polyoxypropylene block copolymer, higher fatty acid alkanol amide, alkyl maleic acid copolymer , Nonionic surfactants such as polyhydric alcohol esters;
Cationic surfactants such as alkylamine salts and quaternary ammonium salts;
Naphthalenesulfonic acid polycondensate metal salt, formalin condensate of naphthalenesulfonate, alkylnaphthalenesulfonate, ligninsulfonate metal salt, alkylallylsulfonate, alkylallylsulfonate sulfate, etc., polystyrene sulfonate Anionic surface activity such as sodium salt, polycarboxylic acid metal salt, polyoxyethylene histidyl phenyl ether sulfate ammonium, higher alcohol sulfonate, higher alcohol ether sulfonate, dialkyl sulfosuccinate, higher fatty acid alkali metal salt Agents; and the like.
These surfactants can be used alone or in combination of two or more.

  Content of surfactant is 0.1-30 mass% normally with respect to the whole composition, Preferably it is 0.3-20 mass%, More preferably, it is 0.5-10 mass%.

  If desired, the agrochemical composition of the present invention comprises an ointment base, an emulsifier, a suspending agent, a spreading agent, a penetrating agent, a wetting agent, a dispersing agent, a stabilizer, a flow aid, an anti-caking agent, an aggregating agent, An antioxidant, a floating agent, an antifoaming agent, an antifreezing agent, an antiseptic, a moisture removing agent, an ultraviolet absorber, an ultraviolet scattering agent, a coloring agent, a suspension stabilizer, and the like may further be contained.

(5) Production of Pesticide Granular Composition The agrochemical composition of the present invention is produced by a conventionally known method for producing granular preparations such as granules, powders (fine granules F, fine granules, fine granules F). can do. For example, after mixing agrochemical active ingredients, binders, mineral carriers and other ingredients, and adding a small amount of water, the whole volume is kneaded by a wet mill such as a ball mill, dyno mill, sand grinder, etc. Etc., and can be obtained by drying into fine particles.

  As a granulator, a conventionally well-known thing can be used without a restriction | limiting in particular. Examples thereof include an extrusion granulator, a pressure granulator, a fluidized bed granulator, a high speed mixing granulator, a rolling granulator, a tableting granulator, and the like.

  The particle size of the obtained granular composition is usually 300 to 1700 μm for granules, usually 180 to 710 μm for fine granules F, 106 to 300 μm for fine granules, and 63 to 212 μm for fine granules F.

  The agrochemical composition of the present invention can be produced efficiently and simply, reduces phytotoxicity, and has a long-lasting medicinal effect (that is, excellent sustained release).

  Examples of application of the agrochemical composition of the present invention include foliage spray, trunk spray, ULV spray, granule foliar spray, soil spray, soil irrigation, water surface application, soil blending, floor soil blending, nursery box treatment, nursery bed treatment, Plant root treatment, grooving treatment, row treatment, side row application, trunk irrigation, trunk application, seed dressing, seed soaking, poison bait, fertilizer mixing, watering for irrigation and the like can be mentioned.

  In addition, when it is applied to seeds and seed pods, the application time may be any time before planting them, and when it is treated to soil, it is efficient at the time of sowing, raising seedlings, or planting seedlings. However, it can be treated even during the growing period after planting, and when it is sprayed with foliage, it may be a seedling growing period or a growing period in this field.

  The application amount of the agrochemical composition of the present invention can vary widely depending on the application time, application place, application method, etc., but generally the active ingredient of the agricultural chemical per hectare is about 0.3 g to 3,000 g, Preferably, it is applied so as to be about 50 g to 1,000 g.

  The agrochemical composition of the present invention is used in combination with natural enemy microorganism preparations, combined with natural enemy organisms (natural enemy insects such as parasitic bees and predatory beetles, predatory mites, parasitic nematodes, entomopathogenic microorganisms, etc.), insect pheromones and It is possible to contribute to the promotion of an IPM (Integrated Pest Management) program, such as combined use with GM crops, combined use with genetically modified crops, combined use with inducers and repellents.

  When the agrochemical composition of the present invention contains the above-mentioned neonicotinoid compound as an agrochemical active ingredient, the agrochemical composition of the present invention is known to paddy fields, fields, orchards, non-agricultural land, houses, etc. It can be exterminated by spraying by the above method and contacting or ingesting the generated pests (harmful insects, etc.).

  In another embodiment, for example, by administering the agrochemical composition of the present invention to the inside (in the body) or outside (the body surface) of the vertebrate, the arthropods and parasites parasitizing the vertebrate are controlled. Can do.

  The agrochemical composition of the present invention can also be used as a mixture. As a specific application method, it can be used in the same manner as a normal agricultural chemical application method. For example, the method of mixing each single component formulation at the time of application (so-called tank mix), the method of applying as an agrochemical mixed formulation described later, and the like can be mentioned.

(6) Pesticide mixed preparation The pesticide mixed preparation of the present invention is obtained by mixing the above-described pesticide granular composition of the present invention and other pesticide granular compositions.

  The other pesticidal granular composition is different in composition from the pesticidal granular composition of the present invention, and the active ingredient may be the same as or different from the pesticidal active ingredient contained in the pesticidal granular composition of the present invention. . Any of herbicidal active ingredients, bactericidal active ingredients, insecticidal active ingredients, acaricidal active ingredients, plant growth regulators and the like, and commercially available agrochemical granular compositions may be used.

  What is necessary is just to mix the agrochemical granular formulation of this invention with the agrochemical granular composition of this invention, and another agrochemical granular composition in a predetermined ratio. The mixing ratio of the pesticidal granular composition of the present invention and the other pesticidal granular composition is not particularly limited, but the mass ratio of (the pesticidal granular composition of the present invention): (other pesticidal granular composition). In general, it is in the range of 100: 1 to 1: 100, preferably 50: 1 to 1:50, more preferably 10: 1 to 1:10.

  When the pesticidal granular composition of the present invention (or the pesticidal mixed preparation of the present invention) contains an insecticidal active ingredient, it is sown in a seedling culture medium mixed with the pesticidal granular composition of the present invention (or the pesticide mixed preparation of the present invention). In the case where the plant is temporarily planted using the soil, or when it is treated by solution irrigation or spraying of granules during the seedling period including seeding time, pests generated during the seedling period can be controlled. Pests can be controlled at the same time by mixing such agrochemical granules and enhancing or complementing each other's effects. Moreover, the target chemical | medical agent for control can be prepared only by mixing granules.

  Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. This invention is not restrict | limited at all to the following Example, It is possible to change freely the kind of each component, and its mixture ratio in the range which does not deviate from the main point of this invention.

In the following examples, the following were used as agrochemical active ingredients, binders, mineral carriers, thickeners and activators. Moreover, in the comparative example, it replaced with the synthetic resin and used other binders.
(1) Agrochemical active ingredient / Agrochemical active ingredient A: Acetamiprid (2) Binder / Binder A: Ethylene-vinyl acetate copolymer / Binder B: Cyclodextrin / Binder C: Carboxymethylcellulose / Binder D: Hydroxy Propylcellulose / Binder E: Polyvinyl acetate / Binder F: Polyvinyl acetal resin / Binder G: Polyvinyl chloride vinyl acetate copolymer / binder H: Polyacrylic acid (3) Thickener / Thickener A: Polyvinyl alcohol (4) Ore-based carrier / carrier A: Ohira clay (coarse product)
-Carrier B: Ohira clay (ordinary product)
-Carrier C: Kaolinite (Crown clay)
Carrier D: Diatomaceous earth (DIAFIL610)
・ Carrier E: Talc (S Talc)
(5) Activator / Activator A: Polyoxyethylene castor oil (6) Colorant / Colorant A: Blue No. 1

(Examples 1-14, Comparative Examples 1-4)
The agrochemical active ingredient A, binder, thickener, and extender were mixed at a blending ratio (100 parts by mass in total) shown in the following table to obtain a mixed powder. Next, 19 parts of distilled water was added to this powder, and after kneading with BENCHKNEADER, a noodle-shaped granulated wet product having an average particle size of 1 mm was made with a micro-type granule maker, and the air was dried at 50 ° C. using a blow dryer. It dried for 12 hours and obtained the agricultural chemical granular composition of Examples 1-14 and Comparative Examples 1-4, respectively.
The component ratios of the compositions are shown in Tables 1, 2, 3, and 4.

(Comparative Example 5)
Agrochemical active ingredient A 2% by weight, carnauba wax (melting point: 83 ° C., freezing point: 73-74 ° C.) 15% by weight, paraffin wax (melting point: 70 ° C.) 5% by weight, white carbon 5% by weight, polyvinyl alcohol 2% by weight %, 10% by weight of talc, and 61% by weight of calcium carbonate were mixed in a Henschel mixer, and discharged at 80 ° C. in the form of granules. This granular material was put into a screw type extrusion granulator and kneaded at 80 ° C. Extrusion granulation was carried out through a self-opening 0.8 mm die at the same temperature to obtain an agrochemical molded product. This was pulverized with a pulverizer to obtain the agrochemical granular composition of Comparative Example 5.

(Dissolution test)
The following dissolution test was performed using the agricultural chemical granular compositions of Examples 1 to 5 and Comparative Examples 1 to 5.
As shown in FIG. 1, 200 mg of the active ingredient amount of each agricultural chemical granular composition (3) 1 Place on filter paper (1) and pour 5 ml of internal standard aqueous solution (1000 ppm aqueous solution of methyl p-hydroxybenzoate). This is repeated 10 times in total and collected in the test tube (2). The content of acetamiprid contained in the collected liquid was measured by HPLC under the conditions shown below, and the component amount of each collected liquid was measured. The elution rate of each collected liquid was calculated with the concentration when the agrochemical active ingredient was completely eluted as the elution rate of 100%. The measurement results are shown in FIG.
Moreover, the dissolution test similar to the above was done using the agrochemical granular composition of Examples 6-14. In this case, the content of acetamiprid in each solution eluted and recovered 10 times was totaled to calculate the elution rate. The measurement results are shown in Table 5.

Apparatus: CLASS-vp (manufactured by Shimadzu Corporation)
Column: YM312 (φ6.0 × 150mm)
Column temperature: 40 ° C
Flow rate: 1 ml / min Measurement wavelength: 245 nm

From FIG. 2, the pesticidal granular composition of Example 1 was sufficiently controlled for elution of the active ingredient and had good sustained release properties.
On the other hand, in the agrochemical granular compositions of Comparative Examples 1 and 2, the agrochemical active ingredients were eluted at once, and the elution of the active ingredients could not be controlled.
In the agricultural chemical granular compositions of Comparative Examples 3 and 4, elution of the active ingredient was controlled to some extent, but the control was insufficient. Moreover, in the agricultural chemical granular composition of Comparative Example 5, almost no elution of the active ingredient was observed.
From Table 5, the elution amount of any agricultural chemical granular composition did not reach 100% even after elution 10 times, and the elution was controlled.

(Drug hazard confirmation test)
Each of the agricultural chemical granular compositions of Examples 1 to 5 and Comparative Examples 1 to 4 was directly sprayed on the leaf surface of Chinese cabbage (variety: Musou) so that the active ingredient concentration was 10 mg / strain. After 7 days, the phytotoxicity was visually observed.
The phytotoxicity index is 9 grades from 0 to 8, and the smaller the number, the less phytotoxicity.
The observation results are shown in Table 6.

  From Table 6, in the case of the agrochemical granular composition of Examples 1 to 5, no phytotoxicity occurred against Chinese cabbage. On the other hand, in the case of the agricultural chemical granular compositions of Comparative Examples 1 to 4, phytotoxicity was observed against Chinese cabbage.

(Verification effect control test against peach aphid)
Each of the agrochemical granular compositions of Example 1 and Comparative Examples 1 to 4 is applied to the roots of Chinese cabbage (variety: Musou) so that the active ingredient concentration is 10 mg / strain, and then aphids are ingested regularly. Then, the number of parasites was investigated. The survey results are shown in Table 7.
The control effect was evaluated in the following four stages.
◎: When the average number of parasites is 0 to 10 ○: When the average number of parasites is 11 to 20 Δ: When the average number of parasites is 21 to 30 ×: The average number of parasites In case of more than 31

From Table 7, the agricultural chemical granular compositions of Example 1 and Comparative Examples 1 and 2 had an excellent control effect against peach aphid. In particular, the granular agricultural chemical composition of Example 1 had an excellent control effect even after 21 days.
On the other hand, the pesticide granular compositions of Comparative Examples 3 and 4 were inferior in controlling effect against peach aphid as compared with the pesticide granular compositions of Example 1 and Comparative Examples 1 and 2.

(Verification effect control test against fake aphids)
After applying the granular agricultural chemical composition of Example 2 to the cabbage (variety: Musou) so that the active ingredient concentration becomes 10 mg / strain, aphids are regularly ingested, and then the number of parasites is investigated. did. The survey results are shown in Table 8. (The meaning of the control effect symbol is the same as above.)

(Test for confirming control effect against aphids)
After applying the granular agricultural chemical compositions of Examples 2 to 4 to cabbage (variety: Kinharu) so that the active ingredient concentration is 10 mg / strain, aphids are regularly ingested, and then the parasites The number was investigated. The survey results are shown in Tables 9 and 10. (The meaning of the control effect symbol is the same as above.)

(Manufacture of mixed agricultural chemical granules)
An agricultural chemical mixed preparation was prepared using the agricultural chemical granular composition of the present invention as the first agricultural chemical granular composition and the other agricultural chemical granular composition as the second agricultural chemical granular composition. A commercially available granule was used as the second agrochemical granular composition.
The first pesticidal granular composition and the second pesticidal granular composition shown in Table 11 are mixed with a rocking mixer RM-10 (manufactured by Aichi Electric Co., Ltd.) at a mixing ratio (100 parts by weight of synthesis) shown in each. A pesticide mixed preparation was prepared. The target mixed preparation could be easily prepared by this method.

1: wax funnel (filter paper)
2: Test tube 3: Pesticide granular composition

Claims (3)

Neonicotinoid agricultural chemical active ingredient (A) having a saturated solubility in water of 25 ° C. of 500 ppm or more, and as a binder, isobutylene-maleic anhydride copolymer, acrylonitrile-butadiene-styrene copolymer, acrylonitrile-polyethylene chloride— Styrene copolymer, acrylonitrile-ethylene-styrene copolymer, acrylonitrile-styrene copolymer, acrylonitrile-styrene-acrylic acid copolymer, methylmethacrylic acid-butylene-styrene copolymer, ethylene-vinyl chloride copolymer, Ethylene-vinyl acetate copolymer, ethylene-vinyl acetate-vinyl chloride graft polymer, ethylene-vinyl alcohol copolymer, ketone resin, polyacrylonitrile, polyacetal, polyamide, polylactic acid, poly ε-caprolactam, poly The solubility in 100 g of water at 20 ° C. is 1 g or less, which is at least one selected from the group consisting of vinyl acid, polystyrene, polyparavinylphenol, polyvinyl butyral, polyvinyl formal, polybutadiene, polymethyl methacrylate, novolac resin, and maleic acid resin. Solid thermoplastic synthetic resin (except for the form of a hollow balloon having a thermoplastic synthetic resin wall film) (B), mineral carrier (C) and thickener (D), water added Then, after kneading, granulation and drying, (A) 0.3 to 50% by mass, (B) 0.3 to 20% by mass, and (C) 5 to 95% by mass with respect to the entire composition. And (D) The agrochemical granular composition which is 0.2-10 mass%. The agrochemical granular composition according to claim 1, wherein the agrochemical active ingredient is at least one selected from the group consisting of nitenpyram, imidacloprid, acetamiprid, thiamethoxam, clothianidin, thiacloprid, and dinotefuran. A pesticide mixed preparation obtained by mixing the pesticide granular composition according to claim 1 or 2 and another pesticide granular composition.

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