WO2021065498A1

WO2021065498A1 - Granular agrochemical composition and agrochemical pack material

Info

Publication number: WO2021065498A1
Application number: PCT/JP2020/035015
Authority: WO
Inventors: 淳佐貫; 紘一坂本
Original assignee: 第一工業製薬株式会社
Priority date: 2019-09-30
Filing date: 2020-09-16
Publication date: 2021-04-08
Also published as: JP2021054749A

Abstract

Provided are: a granular agrochemical composition that exhibits good dispersibility on the surface of water; and an agrochemical pack material incorporating the granular agrochemical composition. A granular agrochemical composition according to an embodiment contains: (a) an agrochemical active component; (b) a carrier; (c) a nonionic surfactant having a surface tension of 40 mN/m or less when measured as a 0.1% by mass aqueous solution at 25°C at 100 milliseconds by the bubble pressure method; and (d) carboxymethyl cellulose sodium salt having a degree of etherification of 0.80 or less and having a 2% by mass aqueous solution viscosity of 100 mPa·s or less.

Description

Granular pesticide composition and pesticide pack

The present invention relates to a granular pesticide composition and a pesticide packing agent using the granular pesticide composition.

In order to save labor in spraying pesticides, an application method in which granules or granules are placed in a bag made of a water-soluble polymer and used as a pack is poured into paddy water has been put into practical use, and various proposals have been made. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-14018

In the pesticide pack as described above, it is required that the granular pesticide composition contained therein is well dispersed and widely diffused on the surface of water such as paddy fields.

An object of the embodiment of the present invention is to provide a granular pesticide composition exhibiting good diffusivity on the water surface and a pesticide packing agent using the granular pesticide composition.

The granular pesticide composition according to the embodiment of the present invention has (a) a pesticide active ingredient, (b) a carrier, and (c) a surface tension of a 0.1% by mass aqueous solution at 25 ° C. at the time of measurement at 100 msec by the bubble pressure method. Contains a nonionic surfactant having a viscosity of 40 mN / m or less, and (d) a sodium carboxymethyl cellulose salt having an etherification degree of 0.80 or less and a viscosity of a 2% by mass aqueous solution of 100 mPa · s or less. is there.

The pesticide packing agent according to the embodiment of the present invention is a water-soluble polymer film container filled with the granular pesticide composition.

The granular pesticide composition according to the embodiment of the present invention disperses well on the water surface. Therefore, if the pesticide pack agent using the granular pesticide composition is used, the granular pesticide composition discharged from the water-soluble polymer film container can be widely diffused on the water surface such as a paddy field.

Photograph showing the state of the water surface in the evaluation of the developed area

The granular pesticide composition according to the present embodiment contains (a) a pesticide active ingredient, (b) a carrier, (c) a nonionic surfactant, and (d) a sodium carboxymethyl cellulose salt.

[(A) Agricultural chemical active ingredient]
The pesticide active ingredient is not particularly limited, and examples thereof include herbicides, fungicides, insecticides, plant growth regulators, etc. Specifically, they are described in the "Agricultural Chemicals Handbook 2001 Edition" of the Japan Plant Protection Association. However, the present invention is not limited to these.

In one embodiment, it is preferable to use a herbicide as the pesticide active ingredient, and other pesticide active ingredients such as a fungicide, an insecticide, and a plant growth regulator may be combined with the herbicide.

Examples of herbicides include phenoxyic acid herbicides, carbamate herbicides, acidamide herbicides, urea herbicides, sulfonylurea herbicides, pyrimidyloxybenzoic acid herbicides, triazine herbicides, and diazine herbicides. Agents, diazole herbicides, bipyridylium herbicides, dinitroaniline herbicides, aromatic carboxylic acid herbicides, fatty acid herbicides, organic phosphoric acid herbicides, amino acid herbicides, inorganic herbicides, etc. .. These can be used alone or in combination of two or more.

The content of (a) pesticide active ingredient in the granular pesticide composition is not particularly limited, and may be, for example, 0.01 to 50% by mass, 0.1 to 10% by mass, based on 100% by mass of the granular pesticide composition. But it may be.

[(B) Carrier]
As the carrier, other components such as (a) pesticide active ingredient can be supported, and powders usually used as carriers in the field of agrochemical preparation can be used. Specifically, clay, bentonite, talc, calcium carbonate, sodium carbonate, gicrite, sericite, acidic white clay, silica stone, diatomaceous earth, pumice stone, perlite, zeolite, vermiculite, white carbon, igneous rock foam, silas foam, and silica stone. Inorganic carriers such as foams, perlite foams, pumice foams; organic carriers such as glucose, maltose, shoe cloth, lactose, dextrin, starch, cellulose, carboxymethyl cellulose, polyethylene glycol, gum arabic, xanthan gum, etc. Can be used in any one type or in combination of two or more types. Among these, the carrier is at least selected from the group consisting of diatomaceous earth, pumice stone, pearlite, zeolite, vermiculite, white carbon, igneous rock foam, silas foam, silica foam, pearlite foam, and pumice foam. One type is preferable.

As the carrier, it is preferable to use a carrier having an apparent specific gravity of less than 1 so as to be suspended in water. The apparent specific gravity of the carrier is more preferably 0.01 to 0.8, still more preferably 0.1 to 0.6.

The apparent specific gravity of the carrier is measured by the method described in the official pesticide inspection method. Specifically, a sample is gently dropped from 20 cm above the upper edge of a 100 mL metal cylindrical container having an inner diameter of 50 mm to fill the container, and immediately the surplus is scraped off using a slide glass and weighed. The apparent specific gravity can be calculated by the following formula by obtaining the mass (A (g)) of.
Apparent specific gravity = A / 100

The content of the carrier (b) in the granular pesticide composition is not particularly limited, and may be, for example, 5 to 95% by mass, 10 to 90% by mass, or 20 to 85% by mass with respect to 100% by mass of the granular pesticide composition. It may be% by mass.

[(C) Nonionic surfactant]
As a nonionic surfactant, the surface tension (hereinafter sometimes referred to as "dynamic surface tension") at the time of measurement of 100 msec by the bubble pressure method of a 0.1 mass% aqueous solution at 25 ° C. is 40 mN / m or less. Is used. When the dynamic surface tension is 40 mN / m or less, the diffusibility of the granular pesticide composition on the water surface is improved in combination with the regulation of the degree of etherification of the component (d) and the viscosity of the 2% by mass aqueous solution. Can be done. More specifically, when the dynamic surface tension is 40 mN / m or less, the nonionic surfactant molecules move faster to the interface, thus increasing the dispersibility of the granular pesticide composition faster. It is presumed that it can be widely deployed on the surface of the water.

The lower limit of the dynamic surface tension of the nonionic surfactant is not particularly limited, but may be, for example, 10 mN / m or more, 20 mN / m or more, or 30 mN / m or more.

In one embodiment, the nonionic surfactant is preferably a polyoxyalkylene alkyl ether type nonionic surfactant, more preferably the main alkyl group having 12 or less carbon atoms (more preferably, the number of carbon atoms). 8-12) is a polyoxyalkylene alkyl ether. For example, polyoxyalkylene lauryl ethers such as polyoxyethylene lauryl ether and polyoxyethylene polyoxypropylene lauryl ether; polyoxyalkylene isodecyl ethers such as polyoxyethylene isodecyl ether and polyoxyethylene polyoxypropylene isodecyl ether; poly Examples thereof include polyoxyalkylene branched decyl ethers such as oxyethylene branched decyl ethers and polyoxyethylene polyoxypropylene branched decyl ethers, and these can be used alone or in combination of two or more. Here, "the main alkyl group has 12 or less carbon atoms" means that 60 mol% or more of the alkyl groups have 12 or less carbon atoms. Further, the "oxyalkylene" preferably has 2 to 4 carbon atoms, and preferably contains at least an oxyethylene group.

The content of the (c) nonionic surfactant in the granular pesticide composition is not particularly limited, and may be 0.5 to 50% by mass with respect to 100% by mass of the granular pesticide composition, for example, 1 to 10% by mass. May be%.

[(D) Sodium Carboxymethyl Cellulose Salt]
As the sodium carboxymethyl cellulose salt, one having a degree of etherification of 0.80 or less and a viscosity of a 2% by mass aqueous solution (25 ° C.) of 100 mPa · s or less is used. When the degree of etherification is 0.80 or less, the dispersibility of the granular pesticide composition can be improved. When the viscosity of the 2% by mass aqueous solution is 100 mPa · s or less, it is possible to suppress the increase in viscosity at the time of preparing the granular pesticide composition and improve the moldability, and it is possible to improve the dispersibility of the granular pesticide composition. it can.

The degree of etherification of the sodium carboxymethyl cellulose salt is preferably 0.75 or less. The lower limit of the degree of etherification is not particularly limited, but may be, for example, 0.60 or more, or 0.65 or more.

The viscosity of the 2% by mass aqueous solution of carboxymethyl cellulose sodium salt is preferably 90 mPa · s or less, and more preferably 50 mPa · s or less. The lower limit of the viscosity of the aqueous solution is not particularly limited, but may be, for example, 10 mPa · s or more.

The PVI value of the sodium carboxymethyl cellulose salt is not particularly limited, but may be 0.30 to 0.60 or 0.40 to 0.50 in one embodiment.

The structural viscosity of the sodium carboxymethyl cellulose salt is not particularly limited, but may be 40 to 200%, 50 to 180%, or 60 to 100% in one embodiment.

The content of (d) carboxymethyl cellulose sodium salt in the granular pesticide composition is not particularly limited, and may be, for example, 0.5 to 10% by mass or 1 to 5% by mass with respect to 100% by mass of the granular pesticide composition. Good.

[Other ingredients]
In addition to the above components, the granular pesticide composition according to the present embodiment may contain various preparation aids generally used in the field of pesticide preparation. Examples of such pharmaceutical auxiliaries include auxiliaries, stabilizers, colorants, fragrances and the like that impart water surface floating property. Examples of the auxiliary agent for imparting water surface floating property include vegetable fats and oils, animal fats and oils, higher fatty acids, and metal salts thereof, and any one or a combination of two or more thereof can be used.

Further, as long as the effect of the present embodiment is not impaired, a surfactant other than the above component (c) and a sodium carboxymethyl cellulose salt other than the above component (d) may be blended. Here, examples of the surfactant other than the above (c) include an anionic surfactant, and the anionic surfactant is a sulfated and phosphorylated nonionic surfactant. Can be mentioned.

[Production method]
The method for producing the granular pesticide composition according to the present embodiment is not particularly limited, and for example, an extrusion granulator, a rolling granulator, a pressure granulator, a stirring granulator, a fluidized bed granulator, or the like. It can be molded into granules using a known granulator. For example, in the case of an extrusion granulator, a screen having a hole with a diameter of 0.1 to 5 mm is attached to a mixture obtained by uniformly mixing various components after adding an appropriate amount of water and kneading into a paste. After granulation using an extrusion granulator, it can be produced by drying, sizing, and sieving.

The shape of the granular pesticide composition (shape of individual grains) is not particularly limited, but it is preferably formed into a spherical shape, a disk shape, a columnar shape or a rectangular parallelepiped (including a cube), and more preferably a columnar shape. The particle size of each grain of the granular pesticide composition is not particularly limited, and may be, for example, 0.1 to 5 mm, 0.3 to 3 mm, or 0.3 to 1.7 mm.

[Agricultural chemical pack]
The granular pesticide composition according to the present embodiment may be applied to paddy fields or the like by a conventional method such as hand-spraying or mechanical spraying. Preferably, the granular pesticide composition is used as a pesticide packing agent (also referred to as a jumbo agent) filled in a water-soluble polymer film container. Such a pesticide packing agent is suitable for application to paddy fields, and when it is put on the water surface, the water-soluble polymer film is rapidly dissolved, and the granular pesticide composition floats and diffuses on the water surface.

The water-soluble polymer film constituting the container for the pesticide pack may be a film that dissolves in water, and examples thereof include polyvinyl alcohol, pullulan, starch, and polyethylene oxide. The shape of the container is not particularly limited, but it is usually bag-shaped.

The amount of the granular pesticide composition per pesticide pack is not particularly limited, and may be, for example, 10 to 500 g, 20 to 100 g, or 30 to 80 g. The application rate of the pesticide pack is appropriately set depending on the content of the pesticide active ingredient contained in the granular pesticide composition and is not particularly limited, but for example, in the case of application to paddy fields, 1 to 50 per 10 ares of paddy fields may be used. It may be 10 to 20 pieces.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. The present invention is not limited thereto.

<Manufacturing of sodium carboxymethyl cellulose salt>
[Manufacturing Example 1]
100 parts by mass of low-density pulp crushed by a household mixer was charged into a kneader-type reactor having a capacity of 3 L equipped with a biaxial stirring blade. After dissolving 60 parts by mass of sodium hydroxide in 500 parts by mass of a hydrous organic solvent in which isopulpyl alcohol: water is mixed at a mass ratio of 80:20, it is put into the reactor charged with pulp and 60 at 35 ° C. The alkali celluloseization reaction was carried out by stirring for 1 minute to obtain alkali cellulose. Next, 55 parts by mass of monochloroacetic acid was dissolved in 33 parts by mass of the hydrous organic solvent to adjust the temperature to 25 ° C., the alkaline cellulose was added over 60 minutes while maintaining the temperature at 35 ° C., and then the temperature was raised to 80 ° C. over 30 minutes. It was warmed and the etherification reaction was carried out at 80 ° C. for 60 minutes.

After the etherification reaction, 5 parts by mass of a 20 mass% hydrogen peroxide aqueous solution was added, and a slimming reaction was carried out at 100 ° C. for 90 minutes. After the above reaction, the unreacted excess sodium hydroxide was neutralized with 50% by mass of acetic acid to adjust the pH to 6.5 to 7.5. The above-mentioned neutralized product in the form of a slurry was taken out from the reactor, and isopulpyl alcohol was removed by centrifugation to obtain a crude carboxymethyl cellulose sodium salt. The crude carboxymethyl cellulose sodium salt was washed with a 70% by mass aqueous methanol solution to remove by-products sodium chloride, sodium glycolate and sodium acetate. After repeating this washing operation twice, it was dried at 90 to 105 ° C. for 4 hours and pulverized to obtain a sodium carboxymethyl cellulose salt (CMC-1).

As a result of measuring various physical properties of the obtained sodium carboxymethyl cellulose salt by the following measuring methods, the degree of etherification was 0.75 and the viscosity of the 2% by mass aqueous solution was 15 mPa · s.

[Manufacturing Examples 2 to 6]
Table 1 below shows the amount of sodium hydroxide charged, the alkaline cellulose formation reaction process conditions, the monochloroacetic acid charge amount, the amount of a water-containing organic solvent that dissolves monochloroacetic acid, the monochloroacetic acid addition conditions, the etherification reaction process conditions, and the thickening process conditions. Production was carried out in the same manner as in Production Example 1 except that the changes were made as described above, to obtain carboxymethyl cellulose sodium salts (CMC-2 to 6) of Production Examples 2 to 6. These various physical properties were measured by the following measuring methods. The measurement results are also shown in Table 1.

<Measurement of physical properties of sodium carboxymethyl cellulose salt>
[Degree of etherification]
0.6 g of sodium carboxymethyl cellulose salt as a sample was dried at 105 ° C. for 4 hours. After weighing the mass of the dried product, it was wrapped in filter paper and incinerated in a porcelain crucible. The ash was transferred to a 500 mL beaker, 250 mL of water and 35 mL of a 0.05 mol / L sulfuric acid aqueous solution were added, and the mixture was boiled for 30 minutes. After cooling, excess acid was back titrated with a 0.1 mol / L potassium hydroxide aqueous solution. Phenolphthalein was used as an indicator. Using the measurement results, the degree of etherification was calculated from the following formula.
Degree of etherification = 162 × A / (10000-80A)
In the formula, A = (af-bf ¹ ) / mass of dried product (g)
A: Amount (mL) of 0.05 mol / L sulfuric acid aqueous solution consumed by the bound alkali in 1 g of the sample.
a: Amount of 0.05 mol / L sulfuric acid aqueous solution used (mL)
f: Titer of 0.05 mol / L sulfuric acid aqueous solution b: Drop determination of 0.1 mol / L potassium hydroxide aqueous solution (mL)
f ¹ : Titer of 0.1 mol / L potassium hydroxide aqueous solution

[Viscosity of 2% by mass aqueous solution]
The sample carboxymethyl cellulose sodium salt (about 4.4 g) was placed in a 300 mL Erlenmeyer flask with a stopper and weighed precisely. An amount of water calculated by the calculation formula “Sample (g) × (98-water content (mass%)) / 2” was added thereto, and the mixture was allowed to stand for 12 hours and mixed for another 5 minutes. Using the obtained solution, the viscosity at 25 ° C. was measured using a BM type viscometer (single cylindrical rotational viscometer) according to JIS Z8803. At that time, (a) the rotor rotation speed is measured as 60 rpm, and (b) when the measured value in (a) above is 8000 mPa · s or more, the rotor rotation speed is changed to 30 rpm for measurement, and (c). When the measured value in (b) above was 16000 mPa · s or more, the rotor rotation speed was changed to 12 rpm for measurement. The "moisture content" in the above formula is calculated by precisely weighing the sample (about 1 g) into a weighing bottle, drying it in a constant temperature dryer at 105 ± 2 ° C. for 4 hours, cooling it in a desiccator, and weighing it. Was weighed and calculated from the weight loss by "water content (mass%) = (weight loss (g) / sample (g)) x 100".

[PVI value]
The PVI value is measured by the method described below. Adjust the paste solution viscosity aqueous solution of 10000 ± 500 mPa · s, stir well, cover with plastic wrap, and leave overnight in a 25 ° C. incubator. Next, take it out of the incubator and stir it sufficiently with a glass rod. Next, the viscosity at 2 rpm is measured using a BH type viscometer and rotor No. 5 (η2). Next, the rotation speed is changed with the speed change knob, and the viscosity at 20 rpm is measured (η20). The non-Newtonian property is calculated by the following formula using each measured viscosity. The closer this value is to 1.0, the stronger the Newtonian property, and the closer it is to 0, the stronger the non-Newtonian property.
PVI value (Printing Viscosity Index) = η20 / η2

[Structural viscosity]
The structural viscosity is measured by the method described below. Adjust the paste solution viscosity aqueous solution of 10000 ± 500 mPa · s, stir well, cover with plastic wrap, and leave overnight in a 25 ° C. incubator. Next, it is taken out from the incubator and the viscosity at 20 rpm is measured using a BH type viscometer and rotor No. 5 (ηM). Next, the paste solution viscosity aqueous solution is stirred at 400 rpm for 10 minutes using a three-one motor, and then the viscosity at 20 rpm is measured using a BH type viscometer and rotor No. 5 (ηm). The non-Newtonian property is calculated by the following formula using each measured viscosity.
Structural viscosity (%) = [(ηM-ηm) / ηm] × 100

<Surfactant>
The surfactants shown in Table 2 below (both manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) were used. The method for measuring the dynamic surface tension in Table 2 is as follows.

[Dynamic surface tension]
A 0.1% by mass aqueous solution of the active ingredient of various surfactants was prepared, and the lifetime was continuously changed from 20 ms to 5000 ms with a dynamic surface tension meter BP-D4 manufactured by Kyowa Surfactant Co., Ltd. at 25 ° C. , The surface tension (dynamic surface tension) at 100 msec was measured.

<Preparation of granular preparation>
[Example 1]
1 part by mass of sodium cyanate as a pesticide active ingredient (herbicide), 9 parts by mass of stearic acid (Nippon Oil "NAA-173K", apparent specific gravity: 0.90), calcium carbonate (Nitto Flour Chemical Co., Ltd. " NS # 400 ”, apparent specific gravity: 0.38) by 20 parts by mass, diatomaceous soil (“Radiolite # 300” manufactured by Showa Kagaku Kogyo, apparent specific gravity: 0.42) by 50 parts by mass, calcium stearate (“Calcium” manufactured by Nichiyu) "Stairate", apparent specific gravity: 0.15) was weighed in 10 parts by mass, CMC-1 was weighed in 5 parts by mass in a plastic bag, and the mixture was mixed into pieces. The mixed powder was transferred to a mortar, 5 parts by mass of Neugen LF-60X was added, mixed, and then kneaded while adding 50 parts by mass of water. Extrusion granulation with a basket-type extrusion granulator (manufactured by Tsutsui Rikagaku Kikai Co., Ltd., micro-granule manufacturing machine, KAR-75 type, basket inner diameter: 75 mm, screen size: inner diameter 75 mm x height 18 mm, opening diameter: 1 mm) , 105 ° C. for 30 minutes. A granular preparation as the granular pesticide composition according to Example 1 by crushing the dried product and sizing it under the condition that it passes through 14 mesh (1.18 mm) and does not pass through 20 mesh (about 0.8 mm). Got

[Examples 2 to 6] and [Comparative Examples 1 to 7]
A granular preparation was obtained in the same manner as in Example 1 except that each component of Example 1 was changed to the components and blending amounts shown in Table 3 below. For Examples 4 to 6 and Comparative Examples 5 to 7, 2,4-dichlorophenoxyacetic acid was used as the pesticide active ingredient (herbicide).

<Evaluation of granular preparation>
The moldability, dispersibility, unfolding speed, and unfolding area of the granular preparations of Examples 1 to 6 and Comparative Examples 1 to 7 were evaluated. The evaluation method is as follows. The results are shown in Table 3 below.

[Moldability]
"○" indicates that the particle surface is dense and smooth during extrusion granulation, "△" indicates that the particle surface can be extruded but has dust on the particle surface, and is liquid or cannot be extruded smoothly. Was set to "x".

[Dispersion]
When 150 mL of water having a hardness of 3 degrees was placed in a 200 mL beaker, 5 granular preparations were gently added, and changes in the state of the granular preparation were observed and evaluated according to the following criteria.
◯: Granular preparation floats on the surface of the water and gradually disperses while losing its shape, and there is nothing that sank before it collapses. Δ: Granular preparation floats on the surface of the water and gradually disperses while losing its shape, but before it collapses. When there is one or more sunk ones and the sunk ones also collapse ×: The granular preparation floats on the water surface and gradually disperses while losing its shape, but there is one or more sunk ones before it collapses. When the sunken thing does not collapse and keeps its shape to some extent

[Deployment speed]
200 g of water was placed in an acrylic case having an inner dimension of 7 cm in width and 23.5 cm in length, and 0.2 g of calcium stearate sifted with a tea strainer was placed therein and spread evenly on the surface of the water. When one granular preparation is gently placed on the water surface at one end in the longitudinal direction of the acrylic case, and the calcium stearate powder existing on the water surface on the one end side crosses the line drawn at a position 15 cm from the one end. I measured the time (seconds).

[Expanded area]
1 L of water was placed in a 2 L beaker, 0.3 g of calcium stearate sifted with a tea strainer was placed therein, and the mixture was spread evenly on the surface of the water. Gently put one granular preparation in the center of the water surface, and the ratio (%) of the area where the water surface is pushed away (the area where the calcium stearate powder is pushed away by the granular preparation and the water surface is exposed) with respect to the entire area of the water surface. ) Was measured. The area that was pushed out was obtained by area calculation using image analysis software (free software "ImgWorks391").

As shown in Table 3, in Comparative Examples 1 to 4 using the sodium carboxymethyl cellulose salt having a degree of etherification exceeding 0.80 or a high viscosity of the aqueous solution, the dispersibility of the granular preparation was inferior. Further, in Comparative Example 1, since the sodium carboxymethyl cellulose salt having a high aqueous solution viscosity was used in the same amount as the sodium carboxymethyl cellulose salt having a low aqueous solution viscosity, the sample shape after molding was poor and the moldability was also inferior. Further, in Comparative Examples 5 to 7 using a surfactant having a dynamic surface tension of more than 40 mN / m, the developing speed was slow and the developing area was small.

On the other hand, Examples 1 to 6 are excellent in moldability and dispersibility of the granular preparation, and the development speed is faster and the development area is larger than that of Comparative Examples 1 to 7, and the granules are obtained. The formulation was excellent in diffusivity. FIG. 1 shows, in the evaluation of the developed area, (a) the state of the water surface before adding the granular preparation, (b) the state of the water surface of Example 2 after adding the granular preparation, and (c) the state of Example 4 after adding the granular preparation. It is a photograph showing the state of the water surface of each of the above, and in the example, it can be seen that the powder of calcium stearate is pushed away in a wide range by adding the granular preparation.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments, omissions, replacements, changes, etc. thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

Claims

A nonionic surfactant having a surface tension of 40 mN / m or less when measured at 100 msec by the bubble pressure method of (a) pesticide active ingredient, (b) carrier, and (c) 0.1% by mass aqueous solution at 25 ° C. A granular pesticide composition containing (d) a sodium carboxymethyl cellulose salt having a degree of etherification of 0.80 or less and a viscosity of a 2% by mass aqueous solution of 100 mPa · s or less.
The granular pesticide composition according to claim 1, which is molded into a spherical shape, a disk shape, a columnar shape, or a rectangular parallelepiped.
A pesticide packing agent in which the granular pesticide composition according to claim 1 or 2 is filled in a water-soluble polymer film container.