JP2002114603A - Agricultural and horticultural wettable powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agricultural and horticultural wettable powder good in physical properties during dilution with water in use and in a diluted liquid. SOLUTION: This agricultural and horticultural wettable powder is characterized as comprising an agrochemical active ingredient, a slightly water-soluble metal oxide and a surfactant and having 60-72 mN/m surface tension of a 0.2% (wt./wt.) diluted liquid with water of the wettable powder. A water-soluble film packaging bag comprises the wettable powder. Thereby, a chemical fluid can readily be prepared and the agricultural and horticultural wettable powder is labor-saving for an operator. Furthermore, the chemical can efficiently and uniformly be sprayed on crops.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wettable powder for agricultural and horticultural use containing an active ingredient of a pesticide as an active ingredient. More specifically,
The present invention relates to an agricultural and horticultural wettable powder having good physical properties when diluted with water and at the time of use, and a water-soluble film packaging bag containing the same.

[0002]

2. Description of the Related Art In actual use of agricultural and horticultural pesticide compositions, there is a method of spraying a liquid formulation prepared as a wettable powder, a wettable powder, flowable, etc., diluted with water onto a target crop. Almost. At that time, the drug quickly adapts to the water, is evenly dispersed, and keeps its state for a long time.
That is, it is desired that the suspension of the water diluent is excellent. In order to enhance the hydration, dispersibility and suspension of the drug, surfactants having a wet spreading effect are generally used, but these surfactants often lower the surface tension of an aqueous solution. On the other hand, if the surface tension of the chemical spraying liquid is excessively low, the chemical liquid may be washed away on crops such as fruit trees and vegetables after the spraying, and the amount of the applied medicine may decrease. A surfactant that does not decrease the surface tension is desired in order not to impair the adherence of the drug solution to the crop. However, the hydration, dispersibility, and suspension of the drug are impaired, and the two are in a conflicting relationship. Therefore, a technique for maintaining the hydration, dispersibility and suspension of the drug without impairing the adhesion to the crop is desired. Also,
In general, most agricultural and horticultural drugs are used by diluting not only one drug but also two or more drugs at the same time with water and spraying the drug solution, that is, mixed use. At that time, depending on the combination of the drugs, coagulation and sedimentation may occur, and mixing may not be possible. Therefore, it is desired that the suspension of the water diluent is excellent not only in single use but also in mixed use conditions.

As a technique for adding a metal oxide to a pesticide composition, zinc oxide, aluminum oxide,
Granular wettable powder containing at least one metal oxide selected from titanium oxide, iron oxide, copper oxide, nickel oxide and manganese oxide (Japanese Patent Application Laid-Open No. 9-124406) Kaihei 5-117112),
Antistatic pesticide dust (JP-B-63-62483)
No.), an underwater organism repellent comprising a dithiocarbamate compound and zinc oxide as active ingredients (JP-A-54-151123).
No.), but all of these have limited dosage forms or uses. Also, a bactericidal preparation containing maneb and an insoluble basic zinc salt (JP-B-47-3492).
No. 7), a fungicide composition for agricultural and horticultural use containing maneb and zinc oxide (JP-B-48-7765) is known.
These compounds have limited compounds and are intended to reduce phytotoxicity to plants, and do not refer to the physical properties of diluents.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an agricultural and horticultural wettable powder having good physical properties when diluted with water at the time of use.

[0005]

SUMMARY OF THE INVENTION In summary, the first invention of the present invention is a wettable powder for agricultural and horticultural use containing an active ingredient of a pesticide, a metal oxide hardly soluble in water, and a surfactant. And a 0.2% (W / W) water diluent of the wettable powder has a surface tension of 60 mN / m to 72 mN / m. Further, the second invention of the present invention relates to a water-soluble film packaging bag containing the above-mentioned wettable powder of the first invention.

As a result of extensive studies, the present inventors have found that the pesticidal active ingredient contains a water-insoluble metal oxide and a surfactant, and 0.2% (W / W) of the composition. The knowledge that can solve the above problems was obtained by the agricultural and horticultural wettable powder characterized in that the surface tension of the water diluent was 60 mN / m to 72 mN / m, and the present invention was completed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. Surface tension of 0.2% (W / W) water diluent is 60 mN
/ M, the physical properties of single use and mixed use at the time of dilution are maintained relatively well, but the adhesion to plants is poor. On the other hand, in a composition in which the surface tension of a 0.2% (W / W) water diluent exceeds 72 mN / m, good adhesion may be exhibited depending on the target crop, but the physical properties at the time of dilution are poor. Inferior. Surface tension of 0.2% (W / W) water diluent is 6
With a composition of 0 mN / m to 72 mN / m, physical properties for single use and mixed use at the time of dilution and adhesion to plants can be specifically compatible. The surface tension in the present invention was measured at 20 ° C. using a Wilhelmy surface tensiometer (Kyowa Interface Science CVB).
(P-A3 type) using a platinum plate.

In the present invention, the pesticidal active ingredient used is not particularly limited as long as it is generally used as a pesticide.
Either solid or liquid can be used, and fungicides, insecticides, acaricides, plant growth regulators, herbicides, and the like are used. For example, fungicides such as 3- (3,5-dichlorophenyl) -N-isopropyl-2,4-dioxoimidazolidin-1-carboxamide “Iprodione” and 1,1′-iminiodi (octamethylene) diguanidinium = tri ( Alkylbenzenesulfonate) "iminoctadine albesyl salt", 1,1'-iminiodi (octamethylene) diguanidinium triacetate "iminoctadine acetate", 4-chlorobenzyl = N-
(2,4-dichlorophenyl) -2- (1H-1,2,2
4-triazol-1-yl) thioacetimidate "imibenconazole", 2-methoxy-N- (2-oxo-1,3-oxazolidin-3-yl) aceto-
2 ', 6'-xyridide "oxadixyl", N-trichloromethylthiotetrahydrophthalimide "captan", cis-trans-3-chloro-4- [4-methyl-2- (1H-1,2,4-triazole-1) -Ylmethyl) -1,3-dioxolan-2-yl] phenyl = 4-chlorophenyl = ether “difenoconazole”, 4-cyclopropyl-6-methyl-N-phenylpyrimidin-2-amine “cyprodinil”, (E, Z )
-4- [3- (4-chlorophenyl) -3- (3,4-
Dimethoxyphenyl) acryloyl] morpholine “dimethomorph”, trans-1- (2-cyano-2-methoxyiminoacetyl) -3-ethylurea “simoxanil”, 1,2-bis (3-methoxycarbonyl-2-thioureido) benzene Thiophanate methyl ",
(E) -4-chloro-α, α, α-trifluoro-N-
(1-Imidazol-1-yl-2-propoxyethylidene) -o-toluidine "triflumizole", all
-Rac-1- (biphenyl-4-yloxy) -3,
3-dimethyl-1- (1H-1,2,4-triazol-1-yl) butan-2-ol "bitertanol",
2 ′, 4′-Dichloro-2- (3-pyridyl) acetophenone = EZ-o-methyloxime “pyrifenox”, 2,4′-dichloro-α- (pyrimidin-5-yl) benzhydryl = alcohol “fenarimol "
(RS) -2- (2,4-dichlorophenyl) -1-
(1H-1,2,4-triazol-1-yl) hexane-2-ol “hexaconazole”, aluminum =
Tris (ethyl phosphonate) "fosetyl", polyoxin complex, methyl-1- (butylcarbamoyl)-
2-benzimidazole carbamate "benomyl", penta-4-enyl = N-furfuryl-N-imidazol-1-ylcarbonyl-DL-homoalaninate "pefurazoate", N- (3,5-dichlorophenyl)-
1,2-dimethylcyclopropane-1,2-dicarboxide “procymidone”, 2-p-chlorophenyl-2-
(1H-1,2,4-triazol-1-ylmethyl)
Hexanenitrile “microbutanyl”, methyl = N-
(2-methoxyacetyl) -N- (2,6-xylyl)
-DL-alaninate "metalaxyl", N- (4-methyl-6-prop-1-ynylpyrimidin-2-yl)
Aniline “mepanipyrim”, 8-hydroxyquinoline copper “organic copper”, tetrachloroisophthalonitrile “TP
N ", bis [(RS) -1- {2- [3- (4-chlorophenyl) propyl] -2,4,4-trimethyl-1,
3-oxazolidine-3-ylcarbonyl {imidazolium] fumarate "oxpoconazole fumarate",
Isopropyl [(S) -1-[(R) -1- (6-fluorobenzothiazol-2-yl) ethylcarbamoyl] -2-methylpropyl] carbamate, zinc ethylenebisdithiocarbamate “Zineb”, manganese ethylenebis Manneb dithiocarbamate, zinc ion-coordinated manganese ethylenebisdithiocarbamate Manzeb, diammonium ethylenebisdithiocarbamate ambam, bisdimethyldithiocarbamoyl zinc ethylenebisdithiocarbamate polycarbamate, nickel dimethyldithiocarbamate organic Sulfur nickel salt ”, zinc propylene bisdithiocarbamate“ propineb ”, zinc dimethyldithiocarbamate“ diram ”, bis (dimethylthiocarbamoyl) disulfide“ thiuram And the like.

As insecticides, 1- (6-chloro-3-pyridylmethyl) -N-nitroimidazoline-2-ylideneamine "imidacloprid", (RS) -5-ter
t-butyl-2- [2- (2,6-difluorophenyl) 4,5-dihydro-1,3-oxazol-4-yl] phenetol "ethoxazole", 2- (4-ethoxyphenyl) -2-methyl Propyl-3-phenoxybenzyl = ether “Etofenprox”, O, O
-Diethyl-O-3,5,6-trichloro-2-pyridyl phosphorothioate "chloropyrifos", 4-bromo-2- (4-chlorophenyl) -1-ethoxymethyl-
5-trifluoromethylpyrrole-3-carbonitrile “chlorfenapyr”, (RS) -α-cyano-3-phenoxybenzyl = (1RS, 3RS)-(1RS, 3
SR) -3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate “cypermethrin”, 4-ethoxyphenyl [3- (4-fluoro-3
-Phenoxyphenyl) propyl] dimethylsilane “silafluofen”, N- (4-tert-butylbenzyl) -4-chloro-3-ethyl-1-methylpyrazole-5-carboxamide “tebufenpyrad”, 1-
(3,5-dichloro-2,4-difluorophenyl)-
3- (2,6-difluorobenzoyl) urea "teflubenzuron", 2-tert-butyl-5- (4-ter
t-butylbenzylthio) -4-chloropyridazine-3
(2H) -one "pyridabene", S-4-phenoxybutyl = dimethylthiocarbamate "phenothiocarb", 2-tert-butylimino-3-isopropyl-5-phenyl-3,4,5,6-tetrahydro-2H
-1,3,5-thiadiazin-4-one “buprofezin”, (RS) -α-cyano-3-phenoxybenzyl = N- (2-chloro-α, α, α-trifluoro-p-
Tolyl) -D-valinate "fluvalinate", O, O
-Dimethyl-S- [5-methoxy-1,3,4-thiazol-2 (3H) onyl- (3) -methyl] dithiophosphate “DMTP”, O, O-dimethyl-O- (3-
Methyl-4-nitrophenyl) thiophosphate “ME
P "and the like.

As the herbicides, 2-chloro-4-ethylamino-6-isopropylamino-s-triazine "Atrazine", N, N-diethyl-3-mesitylsulfonyl-1H-1,2,4-triazole- 1-carboxamide “Cafentrol”, N- (phosphonomethyl) glycinate salt “glyphosate salt”, ammonium = DL
-Homoalanine-4-yl (methyl) phosphinate "glufosinate", butyl = (R) -2- [4- (4
-Cyano-2-fluorophenoxy) phenoxy] propionate “cyhalofop butyl”, L-2-amino-
4-[(Hydroxy) (methyl) phosphinoyl] butyryl-L-alanyl-L-blanin sodium salt “Bilaphos”, sodium 2,6-bis (4,6-dimethoxypyrimidin-2-yloxy) benzoate “Bispyri” Back sodium salt ", methyl 2- (4,6-dimethoxypyrimidin-2-yloxy) -6- (1-methoxyiminoethyl) benzoate" pyrimino back methyl ", O-3-tert-butylphenyl = 6- Methoxy-2-pyridyl (methyl) thiocarbamate “pyributicarb”, (RS) -2-bromo-N- (α, α-dimethylbenzyl) -3,3-dimethylbutylamide “bromobutide”, 2-benzothiazole- 2-yloxy-N-methylacetanilide "mefenacet" and the like.

[0011] As a plant growth regulator, 4'-chloro-
2 ′-(α-hydroxybenzyl) isonicotinanilide “Inabenfide”, (E)-(S) -1- (4-
(Chlorophenyl) -4,4-dimethyl-2- (1H-
1,2,4-triazol-1-yl) penta-1-en-3-ol “uniconazole P”, (2RS, 3R
S) -1- (4-Chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl)
Pentan-3-ol “Paclobutrazol”, calcium = 3-oxide-5-oxo-4-propionylcyclohex-3-enecarboxylate “Prohexadione calcium salt” and the like.

Among the above pesticidal active ingredients, dithiocarbamate-based pesticidal active ingredients are preferred, and manganese ethylenebisdithiocarbamate “Maneb” and zinc ion-coordinated manganese ethylenebisdithiocarbamate “Manzeb” are particularly preferred. The mixing ratio of these pesticide active ingredients is usually 1 to 9 with respect to 100 parts by weight of the composition in total.
It is 5 parts by weight, preferably 5 to 80 parts by weight.

Examples of the metal oxide that can be used in the present invention include one or more selected from magnesium oxide, aluminum oxide, titanium oxide, and zinc oxide.
These metal oxides are preferably in the form of powder having an average particle size of 0.1 to 30 μm. Among them, zinc oxide (activated zinc white) produced by a wet method is preferable. The mixing ratio of these metal oxides is usually 0.1 to 100 parts by weight of the composition.
It is 1 to 20 parts by weight, preferably 1 to 10 parts by weight.

The surfactant which can be used in the present invention is
There is no particular limitation. For example, as anionic surfactants naphthalenesulfonic acid polycondensate metal salt,
Cationic surfactants such as formalin condensate of naphthalene sulfonate, alkyl naphthalene sulfonate, lignin sulfonate, alkyl allyl sulfonate and polycarboxylate are alkyltrimethylammonium chloride, alkyldimethylbenzalkonium Examples of nonionic surfactants such as chloride include polyoxyethylene alkyl phenyl ethers having an HLB of about 15 or more, polyoxyethylene sorbitan fatty acid esters, and the like. Among them, metal salts of naphthalene sulfonic acid polycondensate, naphthalene sulfonic acid salts Anionic surfactants such as a formalin condensate, an alkylnaphthalenesulfonate and a ligninsulfonate are preferred. These surfactants can be used alone or in combination of two or more. The mixing ratio of these surfactants is generally 0.1 to 30 parts by weight, preferably 0.5 to 10 parts by weight, per 100 parts by weight of the composition. At that time, the surface tension of a 0.2% (W / W) water dilution of the wettable powder of the present invention was 60 mN.
/ M to 72 mN / m.

In the present invention, in addition to these components,
Bulking agents and other auxiliaries commonly used in pesticidal pharmaceutical compositions can be blended. Examples of the extender include clay, bentonite, talc, diatomaceous earth, white carbon, calcium carbonate, ammonium sulfate, ammonium bicarbonate, ammonium nitrate, ammonium chloride,
Potassium chloride, sodium sulfate, magnesium sulfate, sodium citrate, sodium carbonate, sodium hydrogen carbonate, sucrose, lactose, urea and the like can be mentioned. The compounding ratio of the extender is usually 0.0
It is 1 to 90 parts by weight, preferably 0.1 to 80 parts by weight. Other auxiliary agents include silicone, antifoaming agents such as soaps, hexamethylenetetramine, phenolic antioxidants, amine antioxidants, antioxidants such as sulfuric antioxidants, carboxymethyl cellulose, polyvinyl alcohol, polyvinyl alcohol Examples include binders such as pyrrolidone, dextrin, and starches, and physical property improvers such as pregelatinized starch, alginates, and polyacrylates. The mixing ratio of the other adjuvants varies depending on the mixing purpose, but usually 0.01 to 100 parts by weight of the composition.
-30 parts by weight, preferably 0.05-10 parts by weight.

The wettable powder for agricultural and horticultural use of the present invention is usually used by diluting it in water at the time of use. However, in order to prevent powdering at the time of use and to avoid contact of the drug with the user, a water-soluble film may be used, if necessary. It can be used by packaging in a bag. At that time, the filling amount of the water-soluble film bag is usually 10 g to
It is 20 kg and is selected according to the application. The material of the water-soluble film used in the present invention is polyvinyl alcohol, polyoxypolyalkylene glycol, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylcellulose, sodium carboxymethylcellulose, sodium polyacrylate, alginic acid, gelatin, pullulan, solubilized starch. And the like, but not limited thereto. The thickness of the water-soluble film is not particularly limited, but generally ranges from 20 μm to 10 μm.
0 μm.

The agricultural and horticultural wettable powder of the present invention can be produced by a conventional method for producing an agricultural chemical wettable powder. That is,
In the case of a powdered wettable powder, the powdery wettable powder is obtained by uniformly mixing an agricultural chemical active compound, a metal oxide, a surfactant, and, if necessary, an extender, an antifoaming agent, and the like, and then pulverizing the mixture. Examples of the pulverization method include impact pulverization, high-speed air pulverization, and the like, but are not particularly limited. Alternatively, the pesticidally active compound may be previously finely ground by impact pulverization, high-speed air pulverization, or the like, and then other components may be blended and uniformly mixed. When dust explosion is feared in the pulverization, it is desirable to pulverize under nitrogen reflux to prevent dust explosion. The powdered wettable powder for agriculture and horticulture of the present invention thus obtained has a fineness of 45% or less of 90% or more, preferably has an average particle size of 1 to 20 μm, and more preferably has an average particle size of 2 μm. It is a fine powder of 10 μm. Further, in the case of a granular wettable powder, the pesticidally active compound and the metal oxide, a surfactant, a filler, a defoaming agent, and the like are further uniformly mixed if necessary, and pulverized if necessary. It can be obtained by a general granulation method such as an extrusion granulation method, a fluidized bed granulation method, a spray drying granulation method, and a tumbling granulation method, but is not particularly limited.
The wettable powder for agriculture and horticulture of the present invention thus obtained is in the form of granules having a particle size of 45 μm or more and 1000 μm or less of 90% or more, and desirably a particle size of 100 μm or more and 850 μm or less of 90% or more. .

The wettable powder for agricultural and horticultural use of the present invention can be used in a method generally used for spraying pesticides. That is, the agricultural and horticultural wettable powder of the present invention is, for example, about 50 to 2000
Dilute to about 0 times with water before use. In addition, the preparations of the present invention may be sprayed at the above-mentioned dilution concentration on rice, vegetables (for example, cucumber, tomato, watermelon, melon, pumpkin, lettuce, cabbage, Chinese cabbage, radish, leek, onion, strawberry, soybean, Potatoes, sugar beets, fruit trees (eg, apples, citrus, none, thighs, grapes, oysters, chestnuts, ume), tea, tobacco, and other edible foods, industrial crops, or weeds. Among these target crops, cucumber, tomato, watermelon, fruit and vegetables such as melon, citrus, none, potato, tea, the adhesion improving effect of the present invention is suitably expressed, furthermore,
In controlling pests that occur on citrus leaves and fruits,
The effect is particularly remarkable.

[0019]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples and test examples, but the present invention is not limited to these examples. In addition, in the following Examples, a part represents a weight part.

Example 1 50 parts of mepanipyrim, 10 parts of zinc oxide (active zinc white),
3 parts of sodium salt of special aromatic sulfonic acid formalin condensate (manufactured by Kao, trade name: Demol SNB), 2 parts of sodium ligninsulfonate (manufactured by Nippon Paper, trade name: Sun Extract P252), 20 parts of diatomaceous earth, and 15 parts of clay After uniform mixing, the mixture was pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of this 0.2% water diluent in water is 70 mN /
m.

Example 2 50 parts of fluvalinate, zinc oxide (activated zinc white) 10
Parts, sodium salt of special aromatic sulfonic acid formalin condensate (made by Kao, trade name: Demol SNB) 3 parts, sodium ligninsulfonate (made by Nippon Paper, trade name: sun extract P252), 20 parts of diatomaceous earth, clay 15 After uniformly mixing the parts, the mixture was pulverized with an impact pulverizer to obtain a powdered wettable powder. Surface tension of this wettable powder 0.2% water diluent is 68 mN
/ M.

Example 3 20 parts of imidacloprid, 10 parts of magnesium oxide, 3 parts of a naphthalenesulfonic acid condensate (manufactured by Toho Chemical Co., Ltd., trade name: Lunox 1000C), calcium ligninsulfonate (manufactured by Nippon Paper, trade name: Pearlrex CP) Two copies,
After uniformly mixing 40 parts of diatomaceous earth and 25 parts of clay, the mixture was pulverized with an impact pulverizer to obtain a powder wettable powder. This wettable powder 0.
The surface tension of the 2% water dilution was 69 mN / m.

Example 4 Calcium salt of prohexadione 20 parts, magnesium oxide 10 parts, sodium naphthalene sulfonate polycondensate (manufactured by Takemoto Yushi, trade name: Newcalgen PS-P) 5
Parts, 2 parts of calcium ligninsulfonate (Nippon Paper Industries, trade name: Pearlrex CP), 30 parts of diatomaceous earth, and 33 parts of clay were uniformly mixed and pulverized with an impact pulverizer to obtain a powdered wettable powder. . The surface tension of this 0.2% water diluent diluted with water was 70 mN / m.

Example 5 75 parts of maneb, 5 parts of zinc oxide (active zinc white), 3 parts of sodium salt of a special aromatic sulfonic acid formalin condensate (manufactured by Kao, trade name: Demol MS), sodium lignin sulfonate (Nippon Paper) Product name: Sun Extract P25
2) 2 parts and 15 parts of clay were uniformly mixed and then pulverized with an impact pulverizer to obtain a powdered wettable powder. This wettable powder 0.2%
The surface tension of the water diluent was 72 mN / m.

Example 6 75 parts of manzeb, 5 parts of zinc oxide (active zinc white), 3 parts of sodium salt of a special aromatic sulfonic acid formalin condensate (manufactured by Kao, trade name: Demol MS), sodium lignin sulfonate (Nippon Paper) Product name: Sun Extract P25
2) 2 parts and 15 parts of clay were uniformly mixed and then pulverized with an impact pulverizer to obtain a powdered wettable powder. This wettable powder 0.2%
The surface tension of the water diluent was 71 mN / m.

Example 7 Manzeb 75 parts, magnesium oxide 5 parts, β-naphthalenesulfonic acid formalin condensate sodium salt (manufactured by Kao Corporation,
Product name: Demol N) 3 parts, Lignin sodium sulfonate (manufactured by Nippon Paper, trade name: Sun Extract P252) 2
Parts and 15 parts of clay were uniformly mixed and pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of the 0.2% water diluent in water was 72 mN / m.

Example 8 75 parts of manzeb, 5 parts of aluminum oxide, β-naphthalenesulfonic acid formalin condensate sodium salt (manufactured by Kao;
Product name: Demol N) 3 parts, Lignin sodium sulfonate (manufactured by Nippon Paper, trade name: Sun Extract P252) 2
Parts and 15 parts of clay were uniformly mixed and pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of this 0.2% water diluent diluted with water was 70 mN / m.

Example 9 75 parts of manzeb, 5 parts of titanium oxide, 3 parts of sodium salt of formalin condensate of β-naphthalenesulfonic acid (trade name: Demol N, manufactured by Kao), sodium ligninsulfonate (trade name, manufactured by Nippon Paper, trade name: After 2 parts of Sun Extract P252) and 15 parts of clay were mixed uniformly, the mixture was pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of the 0.2% water diluent in water was 71 mN / m.

Example 10 75 parts of zineb, 5 parts of zinc oxide (active zinc white), sodium salt of a special aromatic sulfonic acid formalin condensate (manufactured by Kao Corporation)
Brand name: Demol SNB) 3 parts, calcium lignin sulfonate (Nippon Paper Industries, brand name: Pearlrex CP)
1 part and 16 parts of clay were uniformly mixed and then pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of the 0.2% water-dilutable water-dispersible liquid was 69 mN / m.

Example 11 50 parts of ziram, 30 parts of thiuram, 5 parts of zinc oxide (activated zinc white), polycondensate of sodium naphthalenesulfonate (manufactured by Takemoto Yushi, trade name: Newcalgen PS-P) 3
Parts, 1 part of calcium ligninsulfonate (manufactured by Nippon Paper Co., Ltd., trade name: Pearlrex CP) and 11 parts of clay were uniformly mixed and pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of this wettable powder 0.2% water dilution is 69 mN /
m.

Example 12 65 parts of manzeb, 12 parts of simoxanil, 5 parts of zinc oxide,
Alkyl naphthalene sulfonic acid formalin condensate (manufactured by Witco, trade name: mol wet D-425 powder) 3
Parts, 2 parts of sodium ligninsulfonate (manufactured by Nippon Paper Industries, trade name: Sun Extract P252) and 13 parts of clay were uniformly mixed and then pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of this 0.2% water diluent in water is 70 mN /
m.

Example 13 44 parts of ziram, 26 parts of thiuram, 10 parts of mepanipyrim,
5 parts of zinc oxide (activated zinc white), naphthalenesulfonic acid condensate (manufactured by Toho Chemical Co., trade name: Lunox 1000C) 3
Parts, 2 parts of sodium ligninsulfonate (manufactured by Nippon Paper, trade name: Sun Extract P252) and 10 parts of clay were uniformly mixed and pulverized with an impact-type pulverizer to obtain a powdered wettable powder. The surface tension of this wettable powder 0.2% water dilution is 68 mN /
m.

Example 14 100 g of the powdered wettable powder of Example 5 was 20 cm long and 15 cm wide.
The resultant was placed in a polyvinyl alcohol water-soluble film bag having a thickness of 30 μm and sealed by heat sealing to obtain a water-soluble film packaging bag of powdered wettable powder. The surface tension of the 0.2% water diluent in water was 72 mN / m.

Example 15 100 g of the powdered wettable powder of Example 6 was 20 cm long and 15 c wide.
The resultant was placed in a polyvinyl alcohol water-soluble film bag having a thickness of 30 μm and sealed by heat sealing to obtain a water-soluble film packaging bag of powdered wettable powder. The surface tension of the 0.2% water diluent in water was 71 mN / m.

Example 16 Maneb 50 parts, zinc oxide (active zinc white) 5 parts, special aromatic sulfonic acid formalin condensate sodium salt (manufactured by Kao, trade name: Demol SNB) 5 parts, calcium lignin sulfonate (Nippon Paper) Product name: Pearl Rex C
P) 5 parts of sucrose, 5 parts of sucrose, 20 parts of diatomaceous earth, and 10 parts of clay were uniformly mixed, and then granulated and dried with a fluidized bed granulator while spraying 30 parts of water to obtain a granular wettable powder. . The surface tension of the 0.2% water-dilutable water dispersible granule was 68 mN / m.

Example 17 50 parts of manzeb, 5 parts of zinc oxide (active zinc white), 5 parts of sodium salt of a special aromatic sulfonic acid formalin condensate (manufactured by Kao, trade name: Demol SNB), calcium lignin sulfonate (Nippon Paper) Product name: Pearl Rex C
P) 5 parts of sucrose, 5 parts of sucrose, 20 parts of diatomaceous earth, and 10 parts of clay were uniformly mixed, and then granulated and dried with a fluidized bed granulator while spraying 30 parts of water to obtain a granular wettable powder. . The surface tension of this 0.2% water-dispersible granule water diluent was 67 mN / m.

Comparative Example 1 Mepanipyrim 50 parts, polyoxyethylene alkyl phenyl ether (manufactured by Kao, trade name: Emulgen 810) 5
Part, ammonium polyoxyethylene alkyl phenyl ether sulfate (Daiichi Kogyo Seiyaku Co., Ltd., trade name: Dixsol W-66) 5 parts, white carbon 2 parts, diatomaceous earth 20
Parts and 18 parts of clay were uniformly mixed and pulverized with an impact pulverizer to obtain a powdered wettable powder. The surface tension of the 0.2% water diluent in water was 48 mN / m.

Comparative Example 2 75 parts of manzeb, 2 parts of polyoxyethylene alkyl phenyl ether (trade name: Emulgen 810, manufactured by Kao),
Ammonium polyoxyethylene alkyl phenyl ether sulfate (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name: Dixsol W)
-66) After uniformly mixing 5 parts, 2 parts of white carbon, and 16 parts of clay, the mixture was pulverized with an impact pulverizer to obtain a powder wettable powder. The surface tension of this wettable powder 0.2% water diluent is 52
mN / m.

Comparative Example 3 50 parts of manzeb, 5 parts of polyoxyethylene alkyl phenyl ether (trade name: Emulgen 810, manufactured by Kao),
Ammonium polyoxyethylene alkyl phenyl ether sulfate (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name: Dixsol W)
-66) After uniformly mixing 5 parts, 3 parts of white carbon, 5 parts of sucrose, 15 parts of diatomaceous earth, and 17 parts of clay, granulate with a fluidized bed granulator while spraying 30 parts of water, and dry to obtain granulated water. A sum was obtained. The surface tension of this 0.2% water-dispersible granule water diluent was 45 mN / m.

Test Example 1 Suspension (single use) To 0.5 g of a sample, 50 mL of 20 ° C. 3 degree hard water was added and sufficiently dispersed, and then transferred to a 250 mL stoppered graduated cylinder to make 250 mL with 3 degree hard water. The mixture was vigorously inverted and stirred 30 times a minute and then allowed to stand. After 15 minutes, a test solution was collected from the center of the solution using a 25 mL hole pipette, and the water was evaporated using a 70 ° C ventilation dryer. The residue was weighed, and the ratio (suspendability%) to the sample weight was determined. Table 1 shows the results.

Test Example 2 Suspension (mixed) 0.5 g sample, supraside emulsion (Kumiai Chemical)
To 25 mL, 50 mL of 20 degreeC 3rd hard water was added and sufficiently dispersed, and then transferred to a 250 mL stoppered graduated cylinder to make 250 mL with 3rd hard water. The mixture was vigorously inverted and stirred 30 times a minute and then allowed to stand. After 15 minutes, a test solution was collected from the center of the solution using a 25 mL hole pipette, and the water was evaporated using a 70 ° C ventilation dryer. The residue was weighed, and the ratio (suspendability%) to the sample weight was determined. Table 1 shows the results.

Test Example 3 Adhesion Test A 500-fold diluted solution of a sample was sprayed on a cucumber leaf by hand spraying until the drug solution dripped uniformly. After air-drying, the adhesion area of the drug was evaluated by visual observation and indicated by the following index.
Table 1 shows the results.

[0043]

[Table 1]

Test Example 4 Adhesion Test A 500-fold diluted solution of a sample was sprayed on a mandarin leaf and fruit by hand spraying until a chemical solution dripped uniformly. After air-drying, the adhesion area of the drug was evaluated by visual observation and indicated by the following index. Table 2 shows the results.

[0045]

[Table 2]

[0046]

The wettable powder for agricultural and horticultural use of the present invention has good physical properties when diluted with water at the time of use, irrespective of whether it is used alone or in combination, so that a chemical solution can be easily prepared and it is easy for workers. Labor saving. In addition, since the chemicals can be efficiently and uniformly sprayed on crops, an improvement in the control effect can be expected.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01N 43/54 A01N 43/54 D 47/14 47/14 CA 47/34 47/34 A 51/00 51/00 53/08 53/00 508D F term (reference) 4H011 AA01 AC01 BA01 BA05 BA06 BB06 BB09 BB13 BB14 BB15 BC07 BC18 BC19 BC20 DA11 DA15 DC03 DC06 DC08 DD03 DH10

Claims (4)

[Claims] An agricultural chemical active ingredient, a metal oxide that is hardly soluble in water,
And a surfactant for use in agricultural and horticultural use, characterized in that the 0.2% (W / W) water dilution of the wettable powder has a surface tension of 60 mN / m to 72 mN / m. Agricultural and horticultural wettable powder. 2. The wettable powder for agricultural and horticultural use according to claim 1, wherein the metal oxide is an oxide of at least one metal selected from magnesium, aluminum, titanium and zinc. 3. The agricultural and horticultural wettable powder according to claim 1, wherein the metal oxide is activated zinc white produced by a wet method. 4. A water-soluble film packaging bag containing the wettable powder according to claim 1.