JPH06279204A - Floatable agrichemical agent to be thrown into paddy field - Google Patents

Abstract

PURPOSE:To provide a practical labor-saving agrichemical agent to be thrown into a paddy field, having high activity and free from the change of the effect by moisture absorption. CONSTITUTION:A floatable agrichemical agent to be thrown in a paddy field is produced by preparing a granular or powdery agent containing (A) an active component consisting of a herbicide for paddy field, an insecticide for paddy field and/or a disinfectant for paddy field, (B) a carrier having hollow particle form or a carrier subjected to water-repelling treatment and floating on water and (C) a dialkyl sulfosuccinate and filling the agent in a container made of a water-soluble polymer film.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to various paddy field herbicides,
In addition to the active ingredients of insecticides and fungicides, a granular or powdery preparation containing hollow particles floating in water or a water-repellent carrier and dialkylsulfosuccinate is placed in a water-soluble polymer film container. The present invention relates to a buoyant throwing pesticide formulation formed by filling.

[0002]

2. Description of the Related Art Conventionally, pesticide formulations used in paddy fields include granules, powders, emulsions, wettable powders, flowables, etc., but in recent years, one of them is one of the labor-saving spraying methods for herbicides. Attempts have been made to add 40 to 20 throwing preparations having a weight of 25 to 80 g per 10 a. These shapes include a tablet shape and a bag shape. These thrown-in formulations have the drawback of sinking in water and leaving a large amount of active ingredient at the dropping point, which may cause phytotoxicity on subsequent crops. Further, most of them are, for example, Japanese Patent Laid-Open No. 3-128301 and Japanese Patent Laid-Open No. 4-2738.
As shown in 02, it contains a water-soluble solid acid and a carbonate, and promotes disintegration of the agent and diffusion of the active ingredient in water by utilizing the foaming power of carbon dioxide gas generated when the agent is put into water. It is a thing. However, these effervescent preparations have the problems that the raw material cost is high and that basically, they tend to change over time due to moisture absorption. Therefore, if the active ingredient can be diffused in water without depending on the foaming power of carbon dioxide gas, such a problem should be solved. But,
Those that do not contain a foaming agent often have poor disintegration properties of the agent in water and diffusion of the active ingredient in water, which not only reduces the effect but also leaves a large amount of the active ingredient at the injection point.

[0003] As another thrown formulation, Japanese Patent Laid-Open No. 4-
In 334302, a water-soluble polymer film filled with an emulsion is described, but since this uses an organic solvent, there are concerns about handling problems and environmental impact.

Further, Japanese Patent Publications 48-1181 and 47-
1240, JP-B-48-1182, JP-B-44-860
0, JP-A-55-139308, JP-A-58-6520
As shown in 3, there is a method in which the active ingredient is held in a light carrier that floats in water and the granules are suspended, but this method is difficult to evenly spread over the entire paddy field because it is blown by the wind. .

[0005]

Accordingly, the present invention has high activity and high moisture absorption if it is possible to diffuse the active ingredient widely in water without depending on the foaming power and the emulsification and to eliminate the residue at the dropping point. It is an object of the present invention to provide a practical and labor-saving pesticide throw-in pesticide formulation that does not fluctuate in effect.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to solve the above problems and, as a result, have found that a granular form containing a carrier floating in water and a dialkylsulfosuccinate as an anionic surfactant is mixed. Or, if a throwing formulation in which a water-soluble polymer film is filled with a powdered formulation is thrown into a paddy field, the active ingredient is widely dispersed in water after the dissolution of the film, and it is found that the activity is improved. It came to completion.

That is, the present invention provides a herbicide for paddy fields, an insecticide for paddy fields, and / or a fungicide for paddy fields, a hollow particulate carrier floating in water, or a carrier and a dialkylsulfosuccinate treated to be water repellent. It is a floating agrochemical formulation formed by filling a granular or powdery formulation containing the above into a container of a water-soluble polymer film.

When the formulation of the present invention is dropped in a paddy field, the water-soluble polymer film is dissolved while floating, and the contents spread in a state of floating on the water surface. At the same time, the contents during or after expansion are dispersed in water and finally evenly spread over the entire paddy field.

The time from the introduction of these preparations into the paddy field to the end of diffusion is usually about 10 minutes, and the influence of wind can be ignored. Further, in the case of containing only the floating carrier without containing dialkylsulfosuccinate, the water surface spread of the active ingredient is insufficient. Especially when the water depth is shallow or algae and other plants float on the water surface, the horizontal spread from the input point is significantly inferior.

Dialkyl sulfosuccinates have been conventionally used in various industries. For example, it has been used as a flushing agent for pigments, a surface improving agent, an emulsifier for emulsion polymerization, a coloring aid for synthetic resins, a release agent, and the like, and also has many applications in agricultural chemical formulations. It is used for improving the physical properties of powders (JP-A-51-91333), and also for improving the performance of emulsions and the adhesion of wettable powders.
Also for granules, improvement of granulation property, uniform dispersion of water during hydro-kneading, reduction of granulation pressure, improvement of abrasion resistance of screen, improvement of drying efficiency due to water reduction effect, promotion of elution of active ingredient, etc. effective. In the present invention, for the purpose of improving the performance of the thrown-in formulation, it is used in combination with a buoyant carrier to rapidly and uniformly diffuse the active ingredient of the pesticide.

The thrown formulation can be used in a weight of 1 g to 500 g, but a formulation of 10 g to 200 g is preferable. When 0.1 part by weight or more of dialkyl sulfosuccinate is blended, the water surface spreading property of the active ingredient is observed.
It is desirable to add 5 to 5 parts by weight.

The carbon number of the alkyl group of the dialkyl sulfosuccinate is not particularly limited, but 6 to 10 carbon atoms are desirable. Further, the present surfactant can be used as various monovalent metal salts, but sodium salt is most preferable.

Examples of the water-borne carrier usable in the present preparation include shirasu, obsidian, perlite (pearlite) foamed into hollow particles, perlite, shirasu, calcium carbonate, clay, etc., higher fatty acid or Those treated with a water repellent such as silicone, or those obtained by chemically making white carbon or the like hydrophobic can be used. Specific examples thereof include expanded hollow perlite, water repellent perlite, water repellent calcium carbonate, water repellent perlite, water repellent clay, water repellent white carbon, fly ash, and the like.
Among them, foamed hollow perlite and water-repellent perlite are most suitable for this purpose. These may be used alone or as a mixture, and are not limited to these.

In the present invention, a light carrier that floats on water is used to suspend the formulation on the water surface to widely diffuse the active ingredient and improve the effect. Non-floating carriers such as bentonite, clay, talc, diatomaceous earth, etc., and for improving the dispersion of the active ingredient, nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene fatty acid amide, It can be used together with an anionic surfactant such as an alkylnaphthalene sulfonate or an alkylbenzene sulfonate, and in some cases, a liquid carrier such as animal or vegetable oil or mineral oil.

With respect to the amount of the buoyant carrier compounded, the greater the buoyancy of the agent, the more stable the effect. Although it depends on the kind of carrier, the compounding amount can be used in an amount of about 5 parts by weight or more, the upper limit is determined by the compounding amount of the active ingredient and the surfactant, and the compounding amount of the carrier is 10 to 30 in terms of cost. Parts by weight are desirable. If the blending amount is too small, the floating property may become unstable and the effect may be reduced. The contents can be used in the form of powder or granules.

The herbicidal active ingredient used in the present invention includes 2- (2-naphthoxy) propionanilide (naproanilide), 2,4,6-trichlorophenyl-
4'-nitrophenyl ether (CNP), S- (4-
Chlorbenzyl) N, N-diethylthiocarbamate (benchocarb), S-ethyl N, N-hexamethylenethiocarbamate (molinate), S-benzyl
N-ethyl-N- (1,2-dimethylpropyl) thiocarbamate (esprocarb), S- (α, α-dimethylbenzyl) piperidine-1-carbothioate (dimepiperate), 2-chloro-2 ′, 6 ′ -Diethyl-N
-(2-propoxyethyl) acetanilide (pretilachlor), (RS) -2-bromo-N- (α, α-dimethylbenzyl) -3,3-dimethylbutyramide (bromobutide), 2-benzothiazol-2-yloxy -N-methylacetanilide (mefenacet), 1-
(Α, α-Dimethylbenzyl) -3-paratolylurea (Daimuron), 4- (2,4-dichlorobenzoyl)
-1,3-Dimethyl-5-pyrazolyl-p-toluenesulfonate (pyrazolate), methyl α- (4,6-
Dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -O-toluate (bensulfuron-methyl),
Ethyl 5- [3- (4,6-dimethoxypyrimidine-
2-yl) ureidosulfonyl] -1-methylpyrazole-4-carboxylate (pyrazosulfuron-ethyl) and the like, but not limited thereto.

As the insecticidal active ingredient, O, O-dimethyl-O- [3-methyl-4- (methylthio) phenyl] thiophosphate (MPP), O, O-diethyl O-
2-isopropyl-6-methylpyrimidin-4-yl
Phosphorothioate (Diazinon), 2-Secondary Butylphenyl-N-Methyl Carbamate (BP
MC), 2-isopropoxyphenyl-N-methylcarbamate (PHC), (RS) -α-cyano-3-phenoxybenzyl (RS) -2,2-dichloro-1-.
Examples include (4-ethoxyphenyl) cyclopropanecarboxylate (cycloprothrin), 2- (4-ethoxyphenyl) -2-methylpropyl 3-phenoxybenzyl ether (ethofenprox), but are not limited thereto. is not.

As the bactericidal active ingredient, α, α, α-trifluoro-3'-isopropoxy-O-toluanilide (flutolanil), 4,5,6,7-tetrachlorophthalide (phthalide), O, O. -Diisopropyl-S-benzylthiophosphate (IBP), 3-allyloxy-1,2-benzisothiazole-1,1-dioxide (probenazole), diisopropyl-1,3-dithiolane-2-ylidene-malonate (isoprothiolane), 5-methyl-1,2,4-triazolo [3,4-
b] benzothiazole (tricyclazole), 1, 2,
Examples thereof include, but are not limited to, 5,6-tetrahydropyrrolo [3,2,1-ij] quinolin-4-one (pyroquilon) and the like.

Examples of the water-soluble polymer film filled with the present preparation include, but are not limited to, polyvinyl alcohol, polyethylene glycol, carboxymethyl cellulose, hydroxymethyl cellulose, dextrin, gelatin and pullulan. It must be one that can be dropped on the surface of water and dissolved in a few seconds to 24 hours. Regarding the time required for dissolution, 30
It is most desirable that it be completed within minutes. Specific examples thereof include Solbron KA # 35 manufactured by Aicello Chemical Co., Ltd., Toslon ET-10 manufactured by Tokyo Cellophane Paper Co., Ltd., and the like. The thickness of these polymer films is 20 to 5
0 μm is suitable. The bag shape is square,
It can be used in various shapes such as a rectangular shape, a cylindrical shape, a cubic shape, a rectangular parallelepiped shape, and a square shape and a rectangular shape are most preferable.
Or the thickness of the same composition as the bag above 0.1-1.0 m
m water-soluble capsules may be used.

Since these thrown-in formulations are wrapped in a water-soluble container, the sprayer can spray them without touching the pesticide directly with his / her hands, and since the specific gravity is light, they are buried in the soil when thrown and the effect is reduced. There is no fear of doing it. Furthermore, since this is a foaming agent-free additive, it is a labor-saving dusting agent that does not worry about deterioration over time due to moisture absorption and a decrease in its effect. Since these spray formulations are thrown by the sprayer while walking on the ridge, spraying is completed in an extremely short time. For example, in the case of adding 20 pieces per 10a, the spraying is completed in about 5 minutes. Next, the present invention will be described in more detail based on the following examples.

[0021]

【Example】

Example 1 As a herbicidal active ingredient, 28 parts by weight of CNP (2,4,6-trichlorophenyl-4'-nitrophenyl ether) which was previously dry-ground with a jet-o-mizer, and a phosphate amine salt of polyoxyethylene allyl phenyl ether. [Brand name: New Kalgen FS-3, manufactured by Takemoto Yushi Co., Ltd.] 5 parts by weight, sodium salt of dioctyl sulfosuccinate [Brand name: New Kalgen EX-7
0, Takemoto Yushi Co., Ltd.], 2 parts by weight, expanded hollow perlite [trade name: Siricel 42BC, manufactured by Toa Kasei Co., Ltd.]
Was mixed with 20 parts by weight, and 45 parts by weight of perlite [trade name: perlite 409, manufactured by Mitsui Kinzoku Co., Ltd.].
50 g of this was weighed and filled in a polyvinyl alcohol bag [trade name: Toslon ET-10, thickness of 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.], and the filling port was closed by heat sealing to obtain a throw-in preparation. Throw this in formulation N
o. Set to 1.

Example 2 Throwing formulation No. A mixed powder having the same composition as 1 was hydro-kneaded, granulated by an extrusion granulator and then dried to obtain a granule. Weigh 50g of this and make a bag made of polyvinyl alcohol [Product name: Solbron KA # 35, thickness 35 microns,
AICERO CHEMICAL CO., LTD.], And the filling port was closed by heat sealing to obtain a formulation. Throw this in formulation No. Set to 2.

Example 3 As a herbicidal active ingredient, 28 parts by weight of CNP (2,4,6-trichlorophenyl-4'-nitrophenyl ether) which had been previously dry-ground with a jet-o-mizer, and Daimlon [1- (α, α-dimethylbenzyl) -3-
(Paratolyl urea)], 22 parts by weight, sodium lauryl sulfate [trade name: Emar 10, manufactured by Kao Corporation], 10 parts by weight, sodium salt of dialkyl sulfosuccinate [trade name: Eyroll CT-1, Toho Kagaku] 2 parts by weight, a water repellent perlite [trade name: water repellent perlite, manufactured by Mitsui Kinzoku Co., Ltd.], and 18 parts by weight of calcium carbonate were mixed. Weigh 50g of this and make a bag made of polyvinyl alcohol [Product name: Toslon ET-1
0, thickness 35 micron, manufactured by Tokyo Cellophane Paper Co., Ltd.], and the filling port was closed by heat sealing to obtain a throw-in preparation. Throw this in formulation No. Set to 3.

Example 4 As a herbicidal active ingredient, 22.4 parts by weight of naproanilide [β- (2-naphthoxy) propionanilide], which was previously dry-ground with a jet-o-mizer, and bromobutide [(RS) -2-bromo-N] were used. -(Α, α-dimethylbenzyl) -3,3-dimethylbutyramide].
5 parts by weight, mefenacet (2-benzothiazole-2
-Yloxy-N-methylacetanilide) for 12.4
Parts by weight, naphthalenesulfonic acid metal salt condensate [Product name:
8 parts by weight of Newcalgen WG-2, manufactured by Takemoto Yushi Co., Ltd., phosphate amine salt of polyoxyethylene allyl phenyl ether [trade name: Newcalgen FS-3,
5 parts by weight of Takemoto Yushi Co., Ltd., sodium salt of dialkyl sulfosuccinate [trade name: Toxanone HM-
1, Sanyo Kasei Co., Ltd.], 2 parts by weight, expanded hollow perlite [Product name: Siricel 42BC, Toa Kasei Co., Ltd.]
Of 30 parts by weight and bentonite of 7.7 parts by weight were mixed. 50 g of this was weighed out and filled in a polyvinyl alcohol bag [trade name: C-200 thickness, 40 microns, manufactured by Nigo Film Co., Ltd.], and the filling port was closed by heat sealing to obtain a throw-in preparation. Throw this in formulation No. Four
And

Example 5 As a herbicidal active ingredient, 28 parts by weight of CNP (2,4,6-trichlorophenyl-4'-nitrophenyl ether) which was previously dry-ground with a jet-o-mizer, and a sodium salt of dioctylsulfosuccinate were used. [Product name:
2 parts by weight of Newcalgen EX-70, manufactured by Takemoto Yushi Co., Ltd., expanded hollow perlite [trade name: Siricel 42B]
20 parts by weight of C, manufactured by Toa Kasei Co., Ltd., and 50 parts by weight of Perlite [trade name: Perlite 409, manufactured by Mitsui Kinzoku Co., Ltd.] were mixed. 50 g of this is weighed and filled in a polyvinyl alcohol bag [trade name: Toslon ET-10, thickness of 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.],
The filling port was closed by heat sealing to obtain a throw-in preparation.
Throw this in formulation No. Set to 5.

Example 6 2- (4-ethoxyphenyl) -2 as an insecticidal active ingredient
-Methylpropyl 3-phenoxybenzyl ether (ethofenprox) 3 parts by weight, polyoxyethylene allylphenyl ether phosphate amine salt [trade name: Newcalgen FS-3, Takemoto Yushi Co., Ltd.]
5 parts by weight, dioctylsulfosuccinate sodium salt [trade name: Newcalgen EX-70, manufactured by Takemoto Yushi Co., Ltd.], 2 parts by weight, foamed hollow perlite [trade name: Siricel 42BC, Toa Kasei ( Manufactured by Mitsui Kinzoku Co., Ltd.] and 70 parts by weight of Perlite [trade name: Perlite 409, manufactured by Mitsui Kinzoku Co., Ltd.]. 50 this
g Measured polyvinyl alcohol bag [trade name: Toslon ET-10, thickness 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.] was filled, and the filling port was closed by heat sealing to obtain a formulation. Throw this in formulation No. 6

Example 7 15 parts by weight of 1,2,5,6-tetrahydropyrrolo [3,2,1-ij] quinolin-4-one (pyroquilon) as a bactericidal active ingredient and a phosphate of polyoxyethylene allyl phenyl ether. 5 parts by weight of amine salt [trade name: Newcalgen FS-3, manufactured by Takemoto Yushi Co., Ltd.] and 2 parts of sodium salt of dioctyl sulfosuccinate [Product name: Newcalgen EX-70, manufactured by Takemoto Yushi Co., Ltd.] Parts by weight, expanded hollow perlite [Product name: Siricel 42B
20 parts by weight of C, manufactured by Toa Kasei Co., Ltd., and 58 parts by weight of perlite [trade name: perlite 409, manufactured by Mitsui Kinzoku Co., Ltd.] were mixed. 50 g of this is weighed and filled in a polyvinyl alcohol bag [trade name: Toslon ET-10, thickness of 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.],
The filling port was closed by heat sealing to obtain a throw-in preparation.
Throw this in formulation No. 7

Comparative Example 1 As a herbicidal active ingredient, 28 parts by weight of CNP (2,4,6-trichlorophenyl-4'-nitrophenyl ether), which had been previously dry-ground with a jet-o-mizer, was added to polyoxyethylene allylphenyl ether. 5 parts by weight of phosphate amine salt [trade name: Newkalgen FS-3, manufactured by Takemoto Yushi Co., Ltd.], 20 parts by weight of expanded hollow perlite [trade name: Siricel 42BC, manufactured by Toa Kasei Co., Ltd.], and perlite 47 parts by weight of [trade name: Perlite 409, manufactured by Mitsui Kinzoku Co., Ltd.] were mixed. 50 this
g Measured polyvinyl alcohol bag [trade name: Toslon ET-10, thickness 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.] was filled, and the filling port was closed by heat sealing to obtain a formulation. Throw this in formulation No. Ratio -1
And

Comparative Example 2 Casting formulation No. A mixed powder having the same composition as ratio -1 was hydro-kneaded, granulated by an extrusion granulator and then dried to obtain a granule. 50 g of this was weighed and filled in a polyvinyl alcohol bag [trade name: Toslon ET-10, thickness of 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.], and the filling port was closed by heat sealing to obtain a throw-in preparation. Throw this in formulation No. The ratio is -2.

Comparative Example 3 As a herbicidal active ingredient, 28 parts by weight of CNP (2,4,6-trichlorophenyl-4'-nitrophenyl ether) which had been previously dry-ground with a jet-o-mizer, and Daimlon [1- (α, α-dimethylbenzyl) -3-
22 parts by weight of (paratolyl urea), 10 parts by weight of sodium lauryl sulfate [trade name: Emar 10, manufactured by Kao Corporation], hollow hollow perlite [trade name: Siricel 42B]
C, manufactured by Toa Kasei Co., Ltd.], and 20 parts by weight of calcium carbonate were mixed. Weigh 50g of this and make a bag made of polyvinyl alcohol [Product name: Toslon ET-1
0, thickness 35 micron, manufactured by Tokyo Cellophane Paper Co., Ltd.], and the filling port was closed by heat sealing to obtain a throw-in preparation. Throw this in formulation No. The ratio is -3.

Comparative Example 4 As a herbicidal active ingredient, 28 parts by weight of CNP (2,4,6-trichlorophenyl-4'-nitrophenyl ether) which had been previously dry-ground with a jet-o-mizer was used. 5 parts by weight of a phosphate amine salt [trade name: Newkalgen FS-3, Takemoto Yushi Co., Ltd.], sodium salt of dioctylsulfosuccinate [trade name: Newkalgen EX-70,
2 parts by weight of Takemoto Yushi Co., Ltd. and 65 parts by weight of Perlite [trade name: Perlite 409, manufactured by Mitsui Kinzoku Co., Ltd.] were mixed. 50 g of this was weighed and filled in a polyvinyl alcohol bag [trade name: Toslon ET-10, thickness of 35 microns, manufactured by Tokyo Cellophane Paper Co., Ltd.], and the filling port was closed by heat sealing to obtain a throw-in preparation. This is thrown in formulation ratio-No. Set to 4.

Test Example 1 Floating Spreadability Test 2 in a water tank having a length of 3.5 m, a width of 0.3 m and a depth of 0.25 m.
Tap water was added to a depth of 0 cm, and a 1 g content product manufactured by the same method as the throwing formulation shown in each of the above Examples was prepared.
It was added to one end of the water tank. After the water-soluble polymer film was dissolved, the floating properties of the contents were observed with the naked eye, and subsequently, the longest reach distance when the contents spread on the water surface was measured. The results are shown in Table 1 (Table 1). The dissolution time of each polymer film was about 2 minutes.

[Table 1]

As a result, the thrown formulation N containing simultaneously expanded hollow perlite and dialkyl sulfosuccinate.
o. 1-No. 7 floated and spread the water surface well. On the other hand, injectable formulation No. 3 containing no dialkyl sulfosuccinate. In the ratios -1 to -3, although the particles floated, the spread was significantly inferior. On the contrary, injectable formulation No. 6 containing dialkylsulfosuccinate but not expanded hollow perlite. Ratio -4 settled immediately after treatment. Thus, only those that simultaneously contained expanded hollow perlite and dialkyl sulfosuccinate showed good spreadability on the water surface.

Test Example 2 Herbicidal Effect Test on Novier A 5 × 10 m test plot was prepared in a paddy field inoculated with Nobie after sublimation, and the water depth was kept at 5 cm. 4 days after seeding of the thrown-in formulation of each Example with Novier (10 days for thrown-in formulation No. 4)
1 group / section (50 g / 50 m ² ) was put in the central part of the test section. The herbicidal effect on Nobie was investigated 20 days after the introduction. The results are shown in Table 2 (Table 2). In the table, the effect is shown by the major axis of the range in which the Nobie was completely killed.

[0035]

[Table 2]

The same as in Test Example 1, injectable formulation No. 1 containing foamed hollow perlite and dialkylsulfosuccinate at the same time. 1-No. 5 had a high herbicidal effect over a wide range. On the other hand, injectable formulation No. 3 containing no dialkyl sulfosuccinate. Casting formulation Nos. Containing ratios -1 to -3 and dialkylsulfosuccinate but not expanded hollow perlite. Ratio -4 was inferior in effect.

Test Example 3 Insecticidal effect test against rice weevil We prepared 2 plots of 50 m ² (5 m × 10 m) field paddy field field under a flooded condition where 4 weeks after rice planting, the rice leaf age grew to about 5 leaves. did. Of these, the formulation No. 6
Was thrown into the center. In the other plots, 100 g of commercially available trebon granules (containing 1.5% etofenprox) is used.
g was evenly distributed.

The test results were obtained by examining the number of adult rice weevil adults before application, and 1, 3, 5, 7, 10 after spraying.
The same adult body was examined day after day, and the corrected density index was calculated by the following formula, and shown in Table 3 (Table 3).

[0039] A: Number of surviving individuals in the treated area B: Number of surviving individuals in the untreated area C: Number of surviving individuals in the untreated area D: Number of surviving individuals in the untreated area

[Table 3]

As shown in Table 3, the thrown-in formulation is No. No. 6 showed a good insecticidal activity like the comparative granules, suggesting that the active ingredient was uniformly dispersed.

Test Example 4 Pest control effect test against rice blast 4 weeks after the rice planting, two fields of 50 m ² (5 m × 10 m) field paddy field were submerged under a submerged condition where the leaf age of rice grew to about 5 leaves. I prepared. Of these, the formulation No. 7
Was thrown into the center. Further, 150 g of a commercially available Collatop granule (containing 5% of pyroquilon) was uniformly sprayed on the other sections. The number of lesions was examined 1, 3, 5, 10, 30 days after spraying, and the control rate was calculated by the following formula and shown in Table 4 (Table 4).

[0042]

[0043]

[Table 4]

As shown in Table 4, the thrown-in formulation is No. No. 7 showed a good control effect like the comparative granules, suggesting that the active ingredient was uniformly dispersed.

[0045]

INDUSTRIAL APPLICABILITY The injectable preparation according to the present invention contains a floating carrier and a dialkylsulfosuccinate, whereby the agent floats and spreads on the water surface. As a result, the active ingredient diffuses widely in water and shows a high effect as a pesticide.
Therefore, the injectable preparation according to the present invention exerts a sufficient effect without containing a foaming agent and is extremely useful in practice.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Nagashima, 1144 Togo, Mobara-shi, Chiba Mitsui Toatsu Chemical Co., Ltd. (72) Makoto Nishida, 1144, Togo, Mobara-shi, Chiba Mitsui Toatsu Chemical Co., Ltd. ( 72) Inventor Tamotsu Asano 1144, Togo, Mobara-shi, Chiba Mitsui Toatsu Chemical Co., Ltd.

Claims (1)

[Claims] 1. A herbicide for paddy fields, an insecticide for paddy fields, and / or
Or, a water-soluble polymer film container is filled with a hollow particulate carrier that floats in water and an active ingredient of a fungicide for paddy fields or a water-repellent carrier and a granular or powdery preparation containing a dialkylsulfosuccinate. Floating thrown pesticide formulation molded by doing.