JPH115706A - Pest control agent composition, control of pest and enhancement of pest controlling effect - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition capable of improving pest control effect, especially therapeutic effect and reducing an amount of effective component compound used by including a specific imidazole based compound and a spreading agent. SOLUTION: This pest control agent composition comprises (A) an imidazole based compound represented by the formula [R is a halogen, a lower alkyl, etc.; (n) is an integer of 0-5] [e.g. 4-chloro-2cyano-1-dimethylsulfamoyl-5-(4- methylphenyl)imidazole] as an active ingredient and (B) a spreading agent (e.g. a surfactant other than a sorbitan higher fatty acid ester type surfactant, paraffin oil, etc.), as effectiveness-enhancing ingredient. In the above composition, the weight ratio of the A to the component B is preferably (1:5,000) to (2,000:1). When the above composition is applied as a water dispersion to a pest, it is preferable to prepare the composition so that the concentration of the active ingredient is 10,000 ppm and spray the composition in an amount of 100-10,000 1 per ha.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pesticidal composition which is useful as a pesticide for agricultural and horticultural use, in which the effect of controlling pests, particularly the effect of treating plant diseases, is remarkably improved. And a method for enhancing the pest control effect.

[0002]

2. Description of the Related Art JP-A-1-131163 describes that an imidazole compound as an active ingredient of the present invention is useful as a pesticidal agent. It describes that when the active ingredient is used, it can be formulated into various forms together with adjuvants. In addition, Japanese Unexamined Patent Publication
No. 11003 describes a method for controlling pests by applying an aqueous dispersion containing at least one imidazole compound as an active ingredient of the present invention and a sorbitan higher fatty acid ester type surfactant. .

[0003]

On the other hand, in the actual application of the pesticidal agent, on the other hand, pests having different types, diseases, and occurrence times are controlled as much as possible, and the cost of controlling pests is reduced. It is required to reduce the amount of used. Further, the pesticidal agent containing the above-mentioned imidazole compound as an active ingredient is a drug having an excellent preventive effect, and it is required that the therapeutic effect be further enhanced.

[0004]

Means for Solving the Problems The present inventors have found that when a pesticidal composition containing the above-mentioned imidazole compound as an active ingredient is applied and a specific efficacy enhancing ingredient is added to the application, when the efficacy enhancing ingredient is not used, As a result, it has been found that the pest control effect, especially the therapeutic effect, is remarkably improved, and the amount of the active ingredient compound used can be reduced, and the present invention has been completed.

That is, the present invention provides (i) an active ingredient represented by the following general formula (I):

Embedded image

Wherein R is a halogen atom, a lower alkyl group or a lower alkoxy group, and n is an integer of 0 to 5, and at least one of the imidazole compounds represented by the formula (II): The present invention relates to a pesticidal composition comprising a spreading agent, a method for controlling pests, and a method for enhancing a pest controlling effect.

In the imidazole compound of the general formula (I), which is an active ingredient, examples of the halogen atom defined by R include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom. Examples of the alkyl moiety of the lower alkyl group or lower alkoxy group defined by R include alkyl having 1 to 6 carbon atoms, for example, methyl, ethyl, propyl, butyl, pentyl, and hexyl, which are linear or branched. It may be a chain. When n is 2 or more, R
May be the same or different.

The imidazole compounds of the general formula (I) include the following compounds. 4-Chloro-2-cyano-1-dimethylsulfamoyl-5- (4-methylphenyl) imidazole (Compound No. 1) 4-Chloro-2-cyano-1-dimethylsulfamoyl-5- ( 4-methoxyphenyl) imidazole (Compound No. 2) 4-Chloro-2-cyano-1-dimethylsulfamoyl-5- (4-ethylphenyl) imidazole (Compound No. 3) 4-Chloro-2- Cyano-1-dimethylsulfamoyl-5- (3-methyl-4-methoxyphenyl) imidazole (Compound No. 4) 4-Chloro-2-cyano-1-dimethylsulfamoyl-5- (4-chlorophenyl ) Imidazole (Compound No. 5)

A spreading agent can be used as the efficacy enhancing component used in the present invention. Examples of the spreading agent used in the present invention include surfactants (however, excluding sorbitan higher fatty acid ester type surfactants), paraffin oil, animal and vegetable oils,
Mineral oil or the like can be used. In addition, the classification of the spreading agent is not generally clear.For example, there are some which act as a surfactant in animal and vegetable oils, mineral oils, and the like, and the spreading is not clear because it is simply called a sticker. Although there are also agents and the like, the physical properties (sticking property, permeability, spreading property, stomatal flooding, etc.) of the imidazole compound of the general formula (I) used as an active ingredient in the present invention are markedly enhanced, Any spreading agent used to enhance the effect can be used. As the effect enhanced by the enhancement of physical properties in this way, for example, compared to a pesticidal composition not containing the same concentration of the spreading agent, the same effect even when a small amount of the pesticidal composition is used The pest control effect can be improved. Among these spreading agents, it is desirable to use surfactants (however, excluding sorbitan higher fatty acid ester type surfactants), animal and vegetable oils, and mineral oils, and nonionic surfactants (described below as sorbitan higher fatty acids). It is more preferable to use ester-type surfactants), animal and vegetable oils, and mineral oils.

Nonionic surfactants as surfactants (excluding sorbitan higher fatty acid ester type surfactants) which are one of the spreading agents used as the efficacy-enhancing component of the present invention include polyoxysilanes. Ethylene alkyl ether, polyoxyethylene alkyl phenyl ether,
Amine-N-oxides such as polyoxyethylene aryl ethers, polyoxyethylene glycol alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyol fatty acid esters, polyoxyethylene fatty acid amides, trade name ALOMOX C / 12W (manufactured by Agzo Chemie) , Polyoxyethylene alkylamine, fatty acid glycerin ester, silicone surfactant, trade name Rider (manufactured by American Trading Co., Ltd.)
Such as polyoxyethylene alkyl thioether polyphosphate surfactants, higher alcohol sulfates, dialkyl sulfosuccinates, etc., such as polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene fatty acid esters, and polyoxyethylene fatty acid esters. Oxyethylene fatty acid amides, silicone surfactants, higher alcohol sulfates, and dialkyl sulfosuccinates are desirable, and silicone surfactants, polyoxyethylene alkyl phenyl ethers, and polyoxyethylene fatty acid esters are more desirable. Agents are most desirable. Among these silicone surfactants, the brand name Dynamic (DyneAmic; SETRE
CHEMICAL), trade name Kinetic (SE)
TRE CHEMICAL), trade name Sylwet L-77 (SILW
ETT L-77; made by Witco), trade name slippers (SLIPPA; INTER
AGRO) is desirable.

Here, preferred specific examples of the nonionic surfactant are shown in Table 1 below. In addition, it is one type of polyoxyethylene polysilane ether, which is one type of silicone-based surfactant, Renex 36 (trade name, manufactured by Bayer), one type of polyoxyethylene alkyl ether, and one type of polyoxyethylene alkyl phenyl ether. Non-ionic crop oil extras (manufactured by Caro), ortho-X-77 spreaders (manufactured by Sheplon), and coop (COOP) spreader activators (manufactured by Foamland Industries) are also used in the present invention. Included in system surfactants.

[0012]

[Table 1]

[0013]

[Table 2]

[0014]

[Table 3]

[0015]

[Table 4]

The anionic surfactant which is one of the spreading agents used as the efficacy enhancing component in the present invention includes a sulfate ester type anionic surfactant such as an alkyl sulfate or a salt thereof, and naphthylmethane. Sulfonate,
Examples include sulfonic acid type anionic surfactants such as lignin sulfonate, fatty acid salts, fluorine type surfactants, etc., and sulfate ester type anionic surfactants or sulfonic acid type anionic surfactants. Agents are preferred. Desirable specific examples of the anionic surfactant are shown in Table 2 below.

[0017]

[Table 5]

As the cationic surfactant which is one of the spreading agents used as the potency enhancing component in the present invention, needs (trade names) manufactured by Kao Corporation as shown in Table 3 below are required. Dialkylammonium salts, such as alkard T / 50 (trade name, manufactured by Aguso Chemical Co., Ltd.).

[0019]

[Table 6]

The animal and vegetable oils, which are one of the spreading agents used as the efficacy enhancing component in the present invention, include corn oil,
Vegetable oils such as soybean oil, linseed oil, sunflower oil, cottonseed oil, and rapeseed oil; animal oils such as beef tallow and whale oil; and methylated vegetable oils such as Scoil (manufactured by MVRC). Also included are alkylated vegetable oils. Specific examples of the animal and vegetable oils are shown in Table 4 below. Among animal and vegetable oils, alkylated vegetable oils are most preferred.

[0021]

[Table 7]

The paraffin oil, which is one of the spreading agents used as the potency enhancing component in the present invention, includes those derived from animals and plants, those derived from mineral resources such as petroleum, and mixtures thereof. The following table shows specific examples of
It is shown in FIG.

[0023]

[Table 8]

The mineral oil which is one of the spreading agents used as the effect-enhancing component of the present invention includes machine oil, heavy oil, silicon oil and the like. Preferred specific examples of the mineral oil are shown in Table 6 below. Shown in Among these mineral oils, ISHIOIL (trade name; manufactured by Ishihara Sangyo Co., Ltd.) is most preferable.

[0025]

[Table 9]

The above-mentioned various spreading agents such as surfactants (excluding sorbitan higher fatty acid ester type surfactants), animal and vegetable oils, paraffin oils, mineral oils and the like can be appropriately combined with each other and used in the present invention. It can be used as a potency enhancing component. As described above, as a combination of two or more types of spreading agents, a vegetable oil containing a surfactant such as Soedex (manufactured by Helena); Oreo DP11E (manufactured by DuPont); Fizol 11E (manufactured by Schering), trade name Agredex (manufactured by Helena), trade name Atplus 411
(ICI Agrochemical Co., Ltd.), trade name Harvey Max (Loveland Co., Ltd.), trade name Competitor Crop Oil Concentrate (Red Panther Chemical Co., Ltd.), trade name Actipron (Oil Co., Ltd.), trade name Dash (BASF Co., Ltd.) ), Trade name Atlas Adherb (manufactured by Atlas Interrates), trade name crop spray (manufactured by Tribert Farm Chemical), trade name Aguavia 11E (manufactured by Wacker Chemie), trade name Penetletter (manufactured by Helena), trade name Atlas Examples include paraffin oil containing a surfactant such as adjuvant oil (manufactured by Atlas Interates), and also include a potency enhancing component obtained by mixing the four types of spreading agents shown in the following Table-7.

[0027]

[Table 10]

Further, as described above, any spreading agent used to remarkably enhance the physical properties of the imidazole compound of the general formula (I) and enhance the effect is included in the present invention. It is. The following Table 8 shows specific examples of these spreading agents. Further, in the present invention, a spreading agent which can be used as the efficacy enhancing component of the present invention with the pest controlling agent containing at least one of the imidazole compounds represented by the general formula (I) as the active ingredient (i) is used in the present invention. Naturally, the same effect can be expected from the pest controlling composition added so as to have a composition ratio.

[0029]

[Table 11]

[0030]

[Table 12]

The active ingredient and the potency-enhancing ingredient constituting the pesticidal composition of the present invention are, for example, emulsions, powders, wettable powders, wettable powders, liquids, granules, suspensions, etc., as in the case of conventional agricultural chemicals. It can be formulated in various forms. At that time, the active ingredient and the potency enhancing component may be mixed and formulated together, or the potency enhancing ingredient may be mixed with the preparation of the active ingredient. In the actual use of these preparations, they can be used as they are or diluted to a predetermined concentration with a diluent such as water. Examples of the adjuvant include a carrier, an emulsifier, a suspending agent, a thickener, a stabilizer, a dispersing agent, a wetting agent, a suspending agent, an antifreezing agent, an antifoaming agent, and the like. I just need. As a carrier,
Solid carriers and liquid carriers are divided into solid carriers, such as starch, sugar, cellulose powder, cyclodextrin, activated carbon, soybean flour, flour, rice flour, wood flour, fish flour, animal and plant powders such as milk powder, talc, kaolin , Bentonite,
Organic bentonite, calcium carbonate, calcium sulfate,
Mineral powders such as sodium bicarbonate, zeolite, diatomaceous earth, white carbon, clay, alumina, silica, sulfur powder, slaked lime, and the like.Liquid carriers include water, ethyl alcohol, alcohols such as ethylene glycol, acetone. , Ketones such as methyl ethyl ketone, ethers such as dioxane and tetrahydrofuran, aliphatic hydrocarbons such as kerosene and kerosene, aromatic hydrocarbons such as toluene, xylene, trimethylbenzene, tetramethylbenzene, cyclohexane and solvent naphtha, chloroform , Halogenated hydrocarbons such as chlorobenzene, acid amides such as dimethylformamide, esters such as ethyl acetate, glycerin esters of fatty acids, nitriles such as acetonitrile, dimethyl sulfoxide Sulfur-containing compounds or N- methyl-2-pyrrolidone, such as de, N, etc. N- dimethylformamide.

In the method of the present invention, other pesticides, such as fungicides, insecticides, acaricides, nematicides, antivirals, attractants, herbicides, plant growth regulators and the like may be used. In this case, a more excellent effect may be exhibited. Other typical pesticides include azole compounds such as triflumizole (common name), quinoxaline compounds such as quinomethionate (common name), dithiocarbamate compounds such as manzeb (common name), and chlorothalonil (common). ), Benzimidazole compounds such as benomyl (common name), pyridinamine compounds such as fluazinam (common name), cyanoacetamide compounds such as simoxanil (common name),
Phenylamide compounds such as metalaxyl (generic name) and oxadixyl (generic name), sulfenic acid compounds such as diclofluanid (generic name), copper compounds such as cupric hydroxide, and hydroxyisoxazole (generic name) ), Organic phosphorus compounds such as fosetyl aluminum, dicarboximide compounds such as procymidone (generic name), benzanilide compounds such as flutranyl (generic name), (RS) -4-chloro-
Benzamide-based compounds such as N- [cyano (ethoxymethyl)] benzamide, methyl ( E ) -2- {2- [6
-(2-cyanophenoxy) pyrimidin-4-yloxy] phenyl} -3-methoxyacrylate, methyl ( E ) -methoxyimino [α- (o-tolyloxy)-
Β-methoxyacrylic acid compounds such as O-tolyl] acetate, 3-anilino-5-methyl-5- (4-phenoxyphenyl) -1,3-oxazolidine-2,4-
Oxazolidinedione compounds such as dione; cinamic acid compounds such as dimethomorph (common name);

In the pesticidal composition of the present invention,
A suitable weight ratio of active ingredient to potency enhancing ingredient is generally from 1: 5,000 to 2,000: 1, preferably 0.05:
99.95-90: 10, more preferably 0.2: 9
9.8-80: 20.

The concentration at which the pesticidal composition of the present invention is used varies depending on conditions such as the target crop, the method of use, the formulation, and the application rate. Component concentration is 0.1 to 10,000 pp
m, the concentration of the potency enhancing component is 0.01 to 50 ppm.
In the case of soil treatment, the active ingredient concentration is usually 0.01 to 100.
Kg / ha, the concentration of the potency enhancing component is 0.1 to 0.5 Kg /
ha.

The pests referred to in the present invention are harmful to agriculture and horticulture, such as rice blast; rice sheath blight; cucumber anthracnose; cucumber powdery mildew; cucumber, melon, cabbage, and Chinese cabbage. , Onion, grape downy mildew;
Potato, capsicum, pepper, watermelon, pumpkin, tobacco, tomato blight; tomato ring spot; citrus black spot; citrus green mold; pear scab; Phytopathogenic bacteria causing diseases such as rust; Fusarium; Picium;
Rhizoctonia bacteria; Verticillium bacteria; Plant pathogenic bacteria causing soil diseases such as Plasmodiophora; Insects such as planthoppers, diamondback moths, leafhoppers, adzuki beetles, Spodoptera litura, Acacia aphid; Nematodes such as sweet potato nematodes and the like can be mentioned as pests that can be controlled by the pest control agent of the present invention. More specifically, plague of potato, pepper, pepper, watermelon, pumpkin, tobacco, tomato; cucumber, melon, cabbage, Chinese cabbage, onion, grape mildew and the like. The pest control composition of the present invention not only has a long residual effect and shows an excellent preventive effect, but also has an excellent therapeutic effect, so that it is possible to control diseases by treatment after infection.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a preferred embodiment of a pest controlling composition of the present invention and a case where the composition is applied to pests will be described.

As a preferred embodiment of the pest controlling method of the present invention, there is a method of applying the pest controlling composition of the present invention to a pest as an aqueous dispersion. In this method, the pesticidal composition is applied as an aqueous dispersion to a place where pests are generated or are expected to be generated. Such places include the foliage of useful plants, soil, and the like. The foliage of useful plants is particularly effective. Aqueous dispersion is obtained by dispersing a formulation of an active ingredient in water and adding an potency enhancing component to this; dispersing in water a premixed active ingredient and potency enhancing ingredient; Alternatively, those dispersed in water by a method corresponding thereto are used. When the aqueous dispersion is applied, the aqueous dispersion is prepared and used with 1 liter of water for 0.1 to 10,000 mg of the pesticidal composition. The aqueous dispersion is prepared so that the concentration of the active ingredient is 0.1 to 10,000 ppm. The application amount of the aqueous dispersion is 100 to 10,000 liters per ha.

As one preferred embodiment of the pest control method of the present invention, an aqueous suspension preparation of the pesticidal composition of the present invention is applied to pests as it is in the case of an aqueous dispersion. Method. The aqueous suspension preparation is prepared so that the concentration of the active ingredient is 0.1 to 10,000 ppm. The application amount of the aqueous suspension preparation is 1 h
100 to 10,000 liters per a.

Next, formulation examples of the pesticidal composition of the present invention will be described, but the formulation examples are not limited thereto.

[0040]

Formulation Example Formulation Example 1 (1) Active ingredient (Compound No. 1) 11.1 parts by weight (2) Dispersant Soprofol FLK (manufactured by Rhone Poulin; trade name) 1.1 parts by weight (3) Supragil MNS / 90 dispersing / wetting agent (Supragil MNS / 90; trade name) 1.1 parts by weight (4) Dispersing / suspending agent Vegum (Vegum) 1.7 parts by weight (5) Urea (acts as an antifreezing agent) 11.1 parts by weight (6) Antifoaming agent SM5572F (trade name) 0.1 part by weight (7) Distilled water 73.8 parts by weight The above (1) to (7) are mixed, and the average particle size of the active ingredient is adjusted to The suspension was wet-ground to 2 μm to obtain a suspension. To 90 parts by weight of this suspension was added 10 parts by weight of the potency enhancing component, and the mixture was shaken to give an aqueous suspension preparation.

Formulation Example 2 (1) Active ingredient (Compound No. 1) 10.0 parts by weight (2) Dispersant Soprofol FLK (manufactured by Rhone Poulin; trade name) 1.0 part by weight (3) Dispersion -Supragil MNS / 90 wetting agent (Supragil MNS / 90; trade name) 1.0 part by weight (4) Dispersion / suspension agent Vegum (Vegum) 1.5 parts by weight (5) Urea (acts as an antifreezing agent) 10 0.0 parts by weight (6) Antifoaming agent SM5572F (trade name) 0.1 part by weight (7) Distilled water 66.4 parts by weight (8) Efficacy enhancing component 10.0 parts by weight The above (1) to (8) The resulting mixture was mixed and wet-pulverized until the average particle size of the active ingredient became 2 μm to obtain an aqueous suspension preparation.

Next, test examples will be described in order to explain the present invention in more detail, but the present invention is not limited to these test examples.

[0043]

[Test Example] Test Example 1 Test for therapeutic effect on cucumber downy mildew [Preparation of aqueous dispersion] Efficacy enhancing component 500 times or 1
2,000-fold concentration in water, and then 4-chloro-2-cyano-1-dimethylsulfamoyl-5-
(4-methylphenyl) imidazole (Compound No.
1) An aqueous dispersion was prepared by adding so that the concentration became 100 ppm or 12.5 ppm. The spreading agents shown in Tables 1 to 8 (excluding Nos. 24, 39, 58, 69, and 88 to 92) were used as the efficacy enhancing components. For comparison, a predetermined concentration (100 ppm and 12.5 ppm) of the compound N containing no potency-enhancing component was used.
o. One chemical solution was prepared in the same manner as the above aqueous dispersion.

[Biological Test Method and Results] Diameter 7.5c
Cucumber (cultivar: four leaves) was cultivated in a poly bowl of m. When the two-leaf stage was reached, a spore suspension of downy mildew was sprayed and inoculated. After 15 to 24 hours, disperse each test water dispersion in 0.25 m ²
Spray was applied using a spray gun at a rate of 20 ml per spray. In addition, the compound No. One chemical solution was sprayed in the same manner. After being kept in a constant temperature room at 22 to 24 ° C. for 4 to 6 days, the lesion area of the first leaf was investigated, and a control index was obtained according to the following evaluation criteria. The results are shown in Table-9.

Evaluation criteria The control effect was determined by visually observing the degree of disease of the test plant at the time of the investigation, and the control index was determined in the following four stages. 4: The lesion area is less than 20% of the untreated area. 3: The lesion area is less than 20 to 40% of the untreated area. 2: The lesion area is less than 40 to 60% of the untreated area. 1: The lesion area is 60% or more of the untreated area.

[0046]

[Table 13]

[0047]

[Table 14]

Test Example 2 Tomato Blight Disease Treatment Effect Test [Preparation of Aqueous Dispersion] No. 7, 19, 2
2, 23, 25, 27, 35, 39, 42, 43, 46, 55, 61, 67, 7
6, 88 and 90 spreading agents were dispersed in water to a 500-fold concentration, and then 4-chloro-2-cyano-1-dimethylsulfamoyl-5- (4-methylphenyl) imidazole ( Compound No. 1) was added so as to have a concentration of 400 ppm or 12.5 ppm to prepare an aqueous dispersion. Also, sorbitan higher fatty acid ester type surfactants (Comparative Examples Nos. 1, 2 and 3) shown in Table 10 below were dispersed in water so as to have a concentration of 500 times, and then 4-chloro-2-cyano- 1-dimethylsulfamoyl-5-
(4-methylphenyl) imidazole (Compound No.
1) An aqueous dispersion was prepared by adding so as to have a concentration of 400 ppm. Further, for comparison, a predetermined concentration (400 ppm and 12.5 ppm) of Compound No. One chemical solution was prepared in the same manner as the above aqueous dispersion.

[0049]

[Table 15]

[Biological Test Method and Results] Diameter 7.5c
grow tomatoes (variety: Ponterosa) in poly bowls
When the four-leaf stage was reached, a zoospore sac suspension of the fungus was sprayed and inoculated. After 4 hours, each test water dispersion was sprayed at a rate of 20 ml per 0.25 m ² using a spray gun. In addition, the compound No. One chemical solution was sprayed in the same manner. 2
After being kept in a constant temperature room at 2 to 24 ° C. for 3 days, the lesion area was investigated, and the control index was obtained according to the evaluation criteria of Test Example 1 above. The results are shown in Table 11.

[0051]

[Table 16]

Test Example 3 Tomato Blight Treatment Effect Test [Preparation of Aqueous Dispersion] No. 23, 24, 3
9, 88 and 90 spreading agents were dispersed in water to a concentration of 2000 times, and then 4-chloro-2-cyano-1-dimethylsulfamoyl-5- (4-methylphenyl) imidazole ( Compound No. 1) was added so as to have a concentration of 100 ppm to prepare an aqueous dispersion. For comparison, Compound No. 100 at a concentration of 100 ppm containing no potency enhancing component was used. One chemical solution was prepared in the same manner as the above aqueous dispersion.

[Biological test method and results] Diameter 7.5c
grow tomatoes (variety: Ponterosa) in poly bowls
When the four-leaf stage was reached, a zoospore sac suspension of the fungus was sprayed and inoculated. After 4 hours, each test water dispersion was sprayed at a rate of 20 ml per 0.25 m ² using a spray gun. In addition, the compound No. One chemical solution was sprayed in the same manner. 2
After being kept in a constant temperature room at 2 to 24 ° C. for 3 days, the lesion area was investigated, and the control index was determined according to the evaluation criteria of Test Example 1 above. The results are shown in Table-12.

[0054]

[Table 17]

Test Example 4 Test for Preventive Effect on Tomato Blight [Preparation of Aqueous Dispersion] An effect-enhancing component was dispersed in water to a predetermined concentration, and then 4-chloro-2-cyano-1-
Dimethylsulfamoyl-5- (4-methylphenyl)
An imidazole (Compound No. 1) was added so as to have a predetermined concentration to prepare an aqueous dispersion. The spreading agents Nos. 58 and 91 described above were used as the potency enhancing components. Further, for comparison, a predetermined concentration (0.
4 ppm, 0.8 ppm and 1.6 ppm). One chemical solution was prepared in the same manner as the above aqueous dispersion.

[Biological Test Method and Results] Diameter 7.5c
grow tomatoes (variety: Ponterosa) in poly bowls
When the four-leaf stage was reached, each test dispersion was adjusted to a predetermined concentration and sprayed with a spray gun at a rate of 20 ml per 0.25 m ² . In addition, the compound No. One chemical solution was sprayed in the same manner. Twenty-four hours after spraying, a zoospore sac suspension of the plague fungus was sprayed and inoculated, and placed in a constant temperature room at 22 to 24 ° C.
After keeping for one day, the lesion area was investigated, and the control index was determined in the same manner as in Test Example 1. The results are shown in Table-13.

[0057]

[Table 18]

Test Example 5 Test of therapeutic effect on cucumber downy mildew [Preparation of aqueous dispersion] An effect-enhancing component was dispersed in water so as to have a predetermined concentration, and then 4-chloro-2-cyano-1-
Dimethylsulfamoyl-5- (4-methylphenyl)
The imidazole (compound No. 1) concentration is 12.5 ppm
To prepare an aqueous dispersion. In addition, as the effect-enhancing component, the above-mentioned spreading agents No. 23, 24, 39, 8
8, 89 and 90 were used. Further, for comparison, Compound No. 12.5 ppm concentration containing no potency enhancing component was used. 1
A drug solution was prepared in the same manner as in the aqueous dispersion.

[Biological test method and results] Diameter 7.5c
Cucumbers (variety: four-leaf) were cultivated in a polypot of m. When the two-leaf stage was reached, a spore suspension of downy mildew was inoculated by atomization. After 15 to 24 hours, disperse each test water dispersion in 0.25 m ²
Spray was applied using a spray gun at a rate of 20 ml per spray. In addition, the compound No. One chemical solution was sprayed in the same manner. After being kept in a constant temperature room at 22 to 24 ° C. for 5 days, the lesion area of the first leaf was investigated, and the lesion-free area ratio (%) was obtained. The results are shown in Table-14.

[0060]

[Table 19]

[0061]

EFFECTS OF THE INVENTION The use of the pest control composition of the present invention significantly improves the pest control effect, especially the therapeutic effect, and reduces the amount of the active ingredient compound as compared with the case where no efficacy enhancing component is used. be able to.

Claims (8)

[Claims] (1) An active ingredient represented by the following general formula (I): (Wherein R is a halogen atom, a lower alkyl group or a lower alkoxy group, and n is an integer of 0 to 5), and (ii) a spreading agent as an efficacy-enhancing component. A pesticidal composition comprising: 2. The efficacy enhancing component is at least one selected from the group consisting of surfactants (excluding sorbitan higher fatty acid ester type surfactants), paraffin oil, animal and vegetable oils, and mineral oils. Item 4. The composition for controlling a pest according to Item 1. 3. The method according to claim 1, wherein the potency enhancing component is at least one selected from the group consisting of surfactants (excluding sorbitan higher fatty acid ester type surfactants), animal and vegetable oils, and mineral oils. A composition for controlling pests. 4. An at least one imidazole compound of the general formula (I) and at least one of the efficacy enhancing components
The composition for controlling a pest according to claim 1, wherein the weight ratio with the seed is 1: 5,000 to 2,000: 1. (I) As an active ingredient, a compound represented by the following general formula (I): (Wherein R is a halogen atom, a lower alkyl group or a lower alkoxy group, and n is an integer of 0 to 5), and (ii) a spreading agent as an efficacy-enhancing component. A method for controlling pests, which comprises applying a pest controlling composition comprising: 6. The pest controlling composition containing (i) the active ingredient and (ii) the potency enhancing component is applied to pests as an aqueous dispersion. The pest control method described in the above. 7. Use of a spreading agent as an effect-enhancing component, and use of a general formula (I) as an active ingredient: (Wherein R is a halogen atom, a lower alkyl group or a lower alkoxy group, and n is an integer of 0 to 5), the pest of a pest control agent containing at least one imidazole compound represented by the formula: A method to enhance the control effect. 8. The effect-enhancing component is at least one selected from the group consisting of a surfactant (excluding a sorbitan higher fatty acid ester type surfactant), paraffin oil, animal and vegetable oil, and mineral oil. Item 8. The method according to Item 7.