KR20110085866A - Dust-granule mixture formulations for controlling soil-borne disease and soil-borne disease controlling method - Google Patents

Abstract

PURPOSE: A dust-granule formulation for preventing soil-borne diseases is provided to reduce drift(fly) and to suppress effect insufficiency by drug ununiformity. CONSTITUTION: A dust-granule formulation for preventing soil-borne diseases contains an active ingredient for preventing soil-borne diseases, mineral carriers, and polyoxyalkylene resin ester. The polyoxyalkylene resin ester is polyoxyethylene resin ester or polyoxyethylene polyoxypropylene resin ester. The soil-borne diseases are clubroot or phytophthora blight. The active ingredient is 2',4-dichloro-alpha,alpha,alpha-trifluoro-4'-nitro-m-toluenesulfonaylide, 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-alpha,alpha,alpha-trifluoro-2,6-dinitro-p-toluidine or 3-(3-bromo-6-fluoro-2-methylindole-1-ylsulfonyl)-N, N-dimethyl-1, 2, 4-triazole-1-sulfonamide. The dust-granule formulation additionally contains surfactant.

Description

DUST-GRANULE MIXTURE FORMULATIONS FOR CONTROLLING SOIL-BORNE DISEASE AND SOIL-BORNE DISEASE CONTROLLING METHOD}

The present invention relates to a spray agent for soil disease control and a soil disease control method.

Background Art Conventionally, crop diseases are one of the major obstacles in growing crops. Among the diseases, in particular, many of the soil diseases caused by soil pathogens are a problem as a heating disease, and the damage tends to be gradually increased by serialization by the grouping of crop cultivation.

As one of the agents for controlling soil diseases, conventionally, soil fumigation agents such as methyl bromide and chloropicrine have been used. However, special attention must be paid to the safety of the gas agent in terms of its properties and toxicity. In addition, it is necessary to cover the soil with plastic film in advance in order to prevent the volatilization of the gas, the working method is very complicated. In addition, after chemical treatment, in order to prevent the occurrence of weakening, degassing work is necessary, and there is a period in which crops cannot be planted over 7 to 20 days, and in terms of cost and productivity There is a disadvantage. In addition, since the density of microorganisms in the soil is reduced after sterilization, there is a danger that it is incapable of reinfection of the disease, and once infected, the infection is more promoted.

On the other hand, as a method of controlling soil diseases, a method of mixing and irrigation of powder or hydrating agent is known, for example, powder or hydrating agent such as TPN, flusulfamide, and fluazinam are known. have.

In the soil disease control method using powder, there is little variation in drug efficacy due to uniform dispersion of the drug, whereas the worker is caused by the drug being scattered during the dispersion due to the separation of the drug. There is a problem of exposure of the drug. As a preparation which suppressed such a drift, powdered DL etc. are currently developed.

In addition, for the purpose of preventing drift of the drug, an injection agent having a particle size of 0.05 to 0.3 mm having a smaller particle size than the granules is known as a less scattering formulation. Such an injection | pouring agent is easy to use compared with the oil agent and the hydrating agent diluted with water, and scattering (drift) is suppressed. However, the injection agent may be inferior to the uniformity of the chemical | medical agent spread | diffused compared with powder powder, there exists a problem of the nonuniformity of an effect by this, and the point which manufacture cost is high, and it is a present situation that there is little practical use.

For example, dazomet dispersant is known as a dispersant containing the active ingredient for soil disease control, but this is a special thing that the active ingredient disintegrates in the soil and gasifies and sterilizes the soil.

In addition, the granule F which is a kind of blowing agent is known as an alternative preparation of powder. This is often produced by a method of coating an active ingredient on a carrier with a binder. However, also in the fine particle F manufactured in this way, the problem of drift is not completely solved.

As described above, the suppression of the drift has a relationship contrary to the nonuniformity of the drug and the high cost, and therefore, the provision of a better injection agent is desired.

In connection with the above, powder, granule, hydrating agent, flowable agent, emulsion are disclosed as a mixture containing flusulfamide which is an active ingredient for soil disease control (for example, Japanese Patent Application Laid-Open No. 03). -227904, Japanese Patent Application Laid-Open No. 08-198710, and Japanese Patent Application Laid-open No. 08-198713).

In addition, agrochemical granular compositions using a spray granulation method are known (for example, Japanese Patent Application Laid-Open No. 2007-308482). In addition, a pesticide effect enhancing composition containing a resin acid surfactant is known (see, for example, Japanese Patent Application Laid-Open No. 08-151302).

Patent Document 1: Japanese Patent Application Laid-open No. 03-227904 Patent Document 2: Japanese Patent Application Laid-Open No. 08-198710 Patent Document 3: Japanese Patent Application Laid-Open No. 08-198713 Patent Document 4: Japanese Patent Application Publication No. 2007-308482 Patent Document 5: Japanese Patent Application Laid-Open No. 08-151302

Japanese Patent Application Laid-Open No. 03-227904, Japanese Patent Application Laid-Open No. 08-198710, and Japanese Patent Application Laid-Open No. 08-198713 have formal descriptions of the dispersant, but specific preparation agents There is no disclosure in particular regarding. In addition, in the spray granulation method of Japanese Patent Laid-Open No. 2007-308482, the production equipment is large and the manufacturing process is not easy.

An object of the present invention is to provide a soil pest control agent for reducing drift and suppressing the occurrence of a lack of effect due to nonuniformity of the drug, and a soil disease control method using the spray agent for controlling the soil disease. .

The specific means for solving the said subject is as follows.

<1> A preparation agent for soil disease control containing an active ingredient for soil disease control, a mineral carrier and a polyoxyalkylene resin acid ester.

<2> The agent for soil disease control according to <1>, wherein the polyoxyalkylene resin acid ester is at least one selected from polyoxyethylene resin acid ester and polyoxyethylene polyoxypropylene resin acid ester.

<3> The above-mentioned polyoxyalkylene resin acid ester is an agent for controlling soil diseases according to the above <2>, which is at least one selected from polyoxyethylene rosin acid ester and polyoxyethylene polyoxypropylene rosin acid ester.

<4> The soil pest control fraction in any one of said <1> to <3> whose content rate of the said polyoxyalkylene resin acid ester with respect to the total weight of the said pesticide control agent for soil diseases is 0.01-1 weight%. Formulation.

<5> The soiling agent control agent in any one of said <1> to <4> whose content rate of the said polyoxyalkylene resin acid ester with respect to the said mineral support is 0.01-11.1 weight%.

<6> The soil preparation according to any one of the above <1> to <5>, wherein the soil disease is root-knot disease, wearing disease, or late blight.

<7> The above-mentioned active ingredient for soil disease control is 2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide, 3-chloro-N- (3-chloro -5-trifluoromethyl-2-pyridyl) -α, α, α-trifluoro-2,6-dinitro-p-toluidine, and 3- (3-bromo-6-fluoro-2 The soil according to any one of the above <1> to <6>, which is at least one selected from -methylindol-1-ylsulfonyl) -N, N-dimethyl-1,2,4-triazole-1-sulfonamide. Injection preparation for disease control.

The preparation agent for soil disease control in any one of said <1> to <7> containing <8> 8 surfactant further.

<9> The soil agent controlling agent according to <8>, wherein the surfactant is polyalkylene glycol.

<10> The soil pest control agent of any one of said <1> to <9> whose content rate of the said mineral carrier with respect to the total weight of the said soil agent spray agent is 90-99.9 weight%.

<11> The said polyoxyalkylene resin acid ester is a soil disease control in any one of said <1> to <10> whose total addition mole number of an oxyalkylene group is an average of 1-20 mol with respect to 1 mol of resin acids. Injection system.

<12> Any of the above <1> to <11>, wherein the active ingredient for controlling soil diseases is 2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide An agent for controlling soil diseases according to claim 1.

<13> The soil disease control method containing applying the soil spray control agent of any one of said <1> to <12> to soil.

A first step of mixing a <14> mineral carrier and a polyoxyalkylene resin acid ester to obtain a binder-containing mineral carrier;

A method for producing a soil pest control agent comprising a second step of mixing the binder-containing mineral carrier and the active ingredient for soil disease control to obtain a spray agent for soil disease control.

Advantageous Effects of Invention The present invention can provide a soil pest control agent for reducing drift and suppressing the occurrence of a lack of effect due to nonuniformity of the drug, and a soil disease control method using the spray agent for controlling the soil disease.

The preparation agent for soil disease control of this invention contains at least 1 sort (s) of the active ingredient for soil pest control, at least 1 sort (s) of a mineral carrier, and at least 1 sort (s) of polyoxyalkylene resin acid ester.

By such a structure, drift is reduced and generation | occurrence | production of the lack of effect by the nonuniformity of drug efficacy is suppressed.

In addition, even if the active ingredient for soil disease control contains a small particle size (for example, 40 µm or less), separation of the active ingredient having a small particle size from the mineral carrier and separation can be suppressed.

(Active ingredient for soil disease control)

The active ingredient for soil disease control used in the present invention is not particularly limited as long as it has an activity capable of controlling soil disease and can be supported on a mineral carrier. Examples of the active ingredient for soil disease control include organic chlorine compounds, sulfonamide compounds, cyanoimidazole compounds, phenyl pyridine compounds, and bactericides having a sulfamoyl triazole skeleton.

In addition, the soil disease in the present invention is not particularly limited as long as it is a disease derived from bacteria or the like present in the soil. Specific examples of the soil disease include root gall disease, wearing disease, late blight, and the like.

As active ingredients capable of controlling such soil diseases, specifically, TPN (Compound name: tetrachloroisophthalonitrile), Flusulamide (Compound name: 2 ', 4-dichloro-α, α, α-trifluoro) Rho-4'-nitro-m-toluenesulfonanilide), cyazopamide (compound name: 4-chloro-2-cyano-N, N-dimethyl-5-p-tolylimidazole-1-sulfonamide) , Fluazinam (Compound name: 3-chloro-N- (3-chloro-5-trifluoromethyl-2-pyridyl) -α, α, α-trifluoro-2,6-dinitro-p Toluidine), amisulbromine (compound name: 3- (3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1,2,4-triazole- 1-sulfonamide), and the like.

You may use these individually by 1 type or in combination of 2 or more type.

Among them, 2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide, 3-chloro-N- (3-chloro- from the viewpoint of soil disease control activity 5-trifluoromethyl-2-pyridyl) -α, α, α-trifluoro-2,6-dinitro-p-toluidine, and 3- (3-bromo-6-fluoro-2- It is preferable that it is at least 1 sort (s) chosen from methylindol-1-ylsulfonyl) -N, N-dimethyl-1,2,4-triazole-1-sulfonamide, and it is 2 ', 4- dichloro- alpha, alpha, alpha More preferred is -trifluoro-4'-nitro-m-toluenesulfonanilide.

There is no restriction | limiting in particular in content of the said active ingredient for soil disease control, From a viewpoint of a soil disease control activity, content of the said active ingredient for soil disease control is 0.1-1.0 weight with respect to the total weight of the preparation agent for soil disease control. It is preferable that it is%, and it is more preferable that it is 0.1 to 0.5 weight%.

In particular, when the active ingredient for soil disease control is 2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide, its content is injected into soil disease control. It is preferable that it is 0.1 to 0.5 weight% with respect to the total weight of a formulation.

In addition, the agent for controlling soil diseases of the present invention is a compound which is suitably used in the present invention, such as the sulfonamide compound and the phenyl pyridine compound, in order to control other concurrently occurring diseases. It may further be produced by further including a disinfectant to have. Examples of such bactericides include isoxazoles, mepronyl, plutoranyl, fencyclolone, resolex, and varidamycin.

By using together other fungicides with these functions, the use below the content in the case of being used alone may be possible. Although content of these fungicides can be selected suitably according to the kind of fungicide, For example, it can be 0.1-3.0 weight% with respect to the spray agent for soil disease control.

(Mineral carrier)

There is no restriction | limiting in particular as said mineral carrier as long as it can carry the active ingredient for soil disease control, It can select suitably the mineral carrier normally used for agrochemical compositions. Specific examples of the mineral carrier include attapalzite, silica sand, calcined diatomaceous earth, zeolite, sepiolite, calcium carbonate, bentonite, talc and the like. Especially, zeolite, silica sand, and calcium carbonate are preferable and calcium carbonate is more preferable.

These mineral carriers may be used independently and may use multiple types together.

The particle diameter of the mineral carrier is not particularly limited as long as the mineral carrier can carry the active ingredient for soil disease control. The particle diameter of the mineral carrier can be, for example, 0.01 to 0.7 mm, preferably 0.03 to 0.6 mm, and more preferably 0.06 to 0.45 mm.

By the particle diameter of a mineral carrier being in the said range, scattering property can be suppressed more effectively and more uniformity of drug efficacy can be achieved.

In addition, the particle diameter of 0.05-0.3 mm is classified as a blowing agent in Japan.

Content of the said mineral support | carrier can be 90-99.5 weight% with respect to the total weight of the preparation agent for soil disease control, for example, It is preferable that it is 95-99 weight%.

(Polyoxyalkylene Resin Acid Ester)

The spray agent for soil disease control of this invention contains at least 1 sort (s) of polyoxyalkylene resin acid ester. It is thought that the said polyoxyalkylene resin acid ester acts as a binder which adheres the said active ingredient for soil disease control, for example on the said mineral carrier, as mentioned later.

Thus, before the soil pesticide control agent of the present invention is applied to the soil, the active ingredient is peeled off from the mineral carrier to suppress the occurrence of granulation, and after the spray agent for soil disease control is applied to the soil. It is easily peeled from the mineral carrier by physical stimulation such as miscibility with the soil, and can be mixed with the soil uniformly, and the uniformity of the drug is excellent.

The said polyoxyalkylene resin acid ester can be manufactured by adding alkylene oxide to resin acid. Specifically, polyoxyethylene resin acid ester obtained by adding ethylene oxide to resin acid, polyoxypropylene resin acid ester obtained by adding propylene oxide to resin acid, polyoxy obtained by adding ethylene oxide and propylene oxide to resin acid Ethylene polyoxypropylene resin acid ester etc. are mentioned.

In this invention, it is preferable that the said polyoxyalkylene resin acid ester is at least 1 sort (s) chosen from polyoxyethylene resin acid ester and polyoxyethylene polyoxypropylene resin acid ester from a viewpoint of segregation suppression and the uniformity of drug efficacy. .

As an example of the said resin acid, diterpenic acid like rosin acid, aromatic carboxylic acid, such as benzoic acid and cinnamic acid, is mentioned. In this invention, it is preferable that the said resin acid is rosin acid from a viewpoint of granulation suppression and the uniformity of drug efficacy.

Rosin acid is a monocarboxylic acid diterpenic acid contained in a pine genus plant and contains abietinic acid, pimalic acid, etc. as a main component.

In this invention, it is preferable that polyoxyalkylene resin acid ester is polyoxyalkylene rosin acid ester. Polyoxyalkylene rosin acid ester can manufacture polyoxyalkylene rosin acid ester by adding an alkylene oxide to rosin acid, for example. Specifically, polyoxyethylene rosin acid ester obtained by adding ethylene oxide to rosin acid, polyoxypropylene rosin acid ester obtained by adding propylene oxide to rosin acid, polyoxy obtained by adding ethylene oxide and propylene oxide to rosin acid Ethylene polyoxypropylene rosin acid ester etc. are mentioned.

Among these polyoxyalkylene resin acid esters, polyoxyethylene rosin acid ester and polyoxyethylene polyoxypropylene rosin acid ester are preferable, and polyoxyethylene rosin acid ester and polyoxyethylene polyoxypropylene rosin acid ester are more preferred. desirable.

Moreover, polyoxyalkylene rosin acid ester can be obtained industrially easily, For example, DRA series (made by Toho Chemical Co., Ltd.) etc. are mentioned.

Although the addition amount of the alkylene oxide with respect to resin acid is not restrict | limited especially in the said polyoxyalkylene resin acid ester, From 1 to 20 alkylene oxides with respect to 1 mol of resin acids from a viewpoint of granulation suppression and the uniformity of drug efficacy. The molar addition of polyoxyalkylene resin acid ester (that is, polyoxyalkylene resin acid ester whose average added mole number of oxyalkylene group is 1-20 mol with respect to 1 mol of resin acids) is preferable, and it oxidizes with respect to 1 mol of resin acids. More preferred is a polyoxyalkylene resin acid ester in which 3 to 18 alkylene is added (that is, a polyoxyalkylene resin acid ester in which the total added mole number of the oxyalkylene group is 3 to 18 moles on average per 1 mole of the resin acid).

Regardless of the kind of the added alkylene oxide, the content of the polyoxyalkylene resin acid ester is preferably in the range of 0.01 to 1% by weight based on the total weight of the spray agent for controlling soil diseases, and is preferably 0.05 to 0.8. It is more preferable that it is weight%. When content is 0.01 weight% or more, the scattering (drift) suppression effect at the time of use is obtained more effectively. Moreover, by 1 weight% or less, peeling of the active ingredient after soil mixing becomes more favorable, and a desired biological effect improves more effectively.

Moreover, in this invention, it is also preferable that it is 0.01-11.1 weight% of the content rate of the polyoxyalkylene resin acid ester with respect to the said mineral support, and it is more preferable that it is 0.05-0.89 weight%. When this compounding quantity (content rate of the polyoxyalkylene resin acid ester with respect to the said mineral carrier) is 0.01 weight% or more, the scattering (drift) suppression effect at the time of use is obtained more effectively. Moreover, when it is 1.11 weight% or less, peeling of the active ingredient after soil mixing becomes more favorable, and the uniformity of a biological effect improves more.

Soil pest control agent of this invention is polyoxyalkylene resin acid ester, At least 1 sort (s) chosen from polyoxyethylene resin acid ester and polyoxyethylene polyoxypropylene resin acid ester is a pesticide agent for soil disease control. It is preferable to contain in the range of 0.01-1 weight% with respect to the total weight of the, and at least 1 sort (s) chosen from a polyoxyethylene rosin acid ester and polyoxyethylene polyoxypropylene rosin acid ester is a preparation agent for soil disease control. It is more preferable to contain in 0.05 to 0.8 weight% with respect to the total weight.

(Other ingredients)

Inorganic agents for controlling soil diseases of the present invention, in addition to the active ingredient for controlling soil diseases, binders and mineral carriers, may further contain other components as necessary. As other components, generally, a well-known component can be selected suitably as a pesticide preparation agent. Agrochemical preparations as other components, for example, provide various effects such as viscosity of the binder, color of the preparation, pH, aggregation of mineral carrier fine powder, prevention of freezing, light stability, diffusibility in soil after application, and permeability. Or for adjustment purposes.

Specific examples of the other components include water, glycerin, ethylene glycol, propylene glycol, polyethylene glycol, polypropylene glycol, vegetable oils (soybean oil, cottonseed oil, etc.), mineral oils (fluid paraffin, etc.). , Colorant, pH adjuster, flocculant (Drillless A, Drillless B, Drillless C, etc.), mineral fine powder (porous silicic acid etc.), ultraviolet absorber, surfactant, etc. can be used as needed.

-Surfactants-

It is preferable that the jetting agent for soil disease control of this invention further contains at least 1 sort (s) of surfactant. Thereby, the uniformity of a biological effect can be improved more, and the preparation agent for soil disease control of this invention can be manufactured more efficiently.

There is no restriction | limiting in particular as surfactant, For example, nonionic surfactant, anionic surfactant, cationic surfactant, amphoteric surfactant, silicone type surfactant, and fluorine type surfactant are mentioned. Especially, nonionic surfactant can be used suitably. Examples of the nonionic surfactants include polyalkylene glycol-type surfactants, polyhydric alcohol-type surfactants, and acetylene-based surfactants, but are preferably polyalkylene glycols from the viewpoint of separation suppression, uniformity of effects, and production efficiency. And it is more preferable that it is polyethylene glycol.

Although there is no restriction | limiting in particular in the molecular weight of the said polyalkylene glycol type | mold surfactant, It is preferable that the weight average molecular weights of the said polyalkylene glycol type | mold surfactant are 200-600 from a viewpoint of segregation suppression, the uniformity of an effect, and manufacturing efficiency. It is more preferable that it is 300-500.

Moreover, it is preferable that it is 0.01-1 weight% with respect to the total weight of the preparation agent for soil disease control, and, as for content of a polyalkylene glycol type surfactant, it is more preferable that it is 0.05-0.8 weight%.

In this invention, it is preferable to contain 0.01-1 weight% of polyalkylene glycol type | mold surfactants with a weight average molecular weight of 200-600 with respect to the total weight of the preparation agent for soil disease control as surfactant, It is a weight average. It is more preferable to contain 0.05-0.8 weight% of polyethyleneglycol whose molecular weight is 300-500 with respect to the total weight of the preparation agent for soil disease control.

(Production method)

The manufacturing method of the spray agent for soil disease control of this invention will not be restrict | limited especially if a polyoxyalkylene resin acid ester and the active ingredient for soil disease control can be supported on a mineral carrier.

Mixing the mineral carrier and the polyoxyalkylene resin acid ester to obtain a binder-containing mineral carrier, the binder-containing mineral carrier and the active ingredient for soil disease control are mixed to obtain a spray agent for soil disease control. It is preferable that it is a manufacturing method of the preparation agent for soil disease control containing a 2nd process.

By preparing the spray agent for soil disease control by such a production method, for example, the polyoxyalkylene resin acid ester and the active ingredient for soil disease control adhere to the surface of the mineral carrier. Thereby, the granulation before mixing with soil can be suppressed, and after mixing with soil, the active ingredient for soil disease control can be peeled off from the mineral carrier, and can be spread uniformly by the soil.

In the first step, the polyoxyalkylene resin acid ester may be directly mixed with the mineral carrier, and the polyoxyalkylene resin acid ester and the surfactant (preferably polyethylene glycol) may be mixed in advance. You may mix the binder premix obtained and the mineral carrier. In the present invention, from the viewpoint of production efficiency, it is preferable to mix the binder premix prepared in advance and the mineral carrier.

In this step, the polyoxyalkylene resin acid ester is attached to the surface of the mineral carrier, for example. The polyoxyalkylene resin acid ester adhering to the surface of the mineral carrier can more effectively attach the active ingredient for soil disease control to the mineral carrier.

The said binder premix contains at least 1 sort (s) of polyoxyalkylene resin acid ester, and may further contain other components as needed. As another component contained in a binder premix, surfactant, an organic solvent, etc. are mentioned, for example.

The surfactant contained in the binder premix has the same meaning as the surfactant described above, and preferred embodiments are also the same.

As a method of mixing a polyoxyalkylene resin acid ester and a mineral carrier, the general mixer generally used can be used without a restriction | limiting in particular. Specifically, it can mix using a mixer which has various mixing blades, such as a ribbon mixer, a Nauta mixer, and a Henschel mixer, for example.

In the said 2nd process, the binder containing mineral carrier obtained by the 1st process, and the active ingredient for soil disease control are mixed, and the preparation agent for soil disease control is manufactured. The active ingredient for soil disease control may be directly mixed with a binder-containing mineral carrier, or the active ingredient premix for soil disease control containing a previously prepared active ingredient for soil disease control may be mixed with a binder-containing mineral carrier.

The said active ingredient for soil disease control premix contains at least 1 sort (s) of the active ingredient for soil disease control, and may further contain other components as needed. As other components contained in the active ingredient premix for soil disease control, calcium carbonate, white carbon, etc. are mentioned, for example.

As a method of mixing the binder-containing mineral carrier and the active ingredient for soil disease control, similarly to the mixing method in the first step, a general mixer commonly used can be used without particular limitation. For example, it can mix using a mixer which has various mixing blades, such as a ribbon mixer, a Nauta mixer, and a Henschel mixer.

In the present invention, the first step and the second step may be sequentially performed using different mixing means, or the first step and the second step may be continuously performed using the same mixing means. do.

Moreover, the manufacturing method of the said spray agent for soil disease control may further contain other processes as needed. As said other process, a heating process, a cooling process, a drying process, etc. are mentioned, for example.

(Soil disease control method)

The soil disease control method of the present invention includes applying the above-mentioned spray agent for soil disease control to soil. By using the said spray agent for soil disease control, scattering (drift) of the chemical | medical agent in application can be suppressed, and the soil disease control effect excellent in uniformity can be achieved.

As a method of applying the spray agent for soil disease control to soil, the application method of the spray agent normally used can be applied without a restriction | limiting in particular. Specifically, it can be applied by spraying the soil pesticide spray agent on the soil surface using a hand sprayer or a dedicated treatment machine, and then mixing the soil with the soil, for example, but the treatment method is not limited thereto. .

The spray agent for soil disease control of the present invention can reduce the exposure of drugs to workers, reduce scattering of drugs other than the target environment, and provide a spray agent with more stable effect. In addition, in the preparation agent for soil disease control according to the present invention, even when an active ingredient having no permeability or volatility is used, nonuniformity is suppressed in the concentration of the active ingredient in the soil, thereby achieving a uniform soil disease control effect. can do.

In addition, the spray agent for soil disease control of the present invention has good soil diffusivity of the drug after spraying, and instability of the control effect due to uneven concentration is suppressed. In addition, fluctuations in the control effect due to environmental factors such as rainfall and soil moisture after treatment are suppressed, and even a small amount of chemical agent reduces the date until the effect is completed. Moreover, since it can be applied directly, without diluting with water, it can be used also in a place where repair is bad, without the trouble of preparing a chemical liquid, and the need for an exclusive spraying apparatus.

Example

Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples. In addition, "part" and "%" are basis of weight unless there is particular notice.

Preparation Example 1 Preparation of Flusulfamide 0.3% Injection Preparation

To KENMIX® chef (manufactured by Aikosha Kogyo Co., Ltd.), 1334.25 g of calcium carbonate (A-carbon, particle size: 500 µm or more and 0%, 150 µm or less, 10.0% or less, Asahi Komatsu Co., Ltd.) 1334.25 g and calcium carbonate (K-250 And particle size: 425 µm or more and 1.0% or less, 45 µm or less, 19% or less, 150 g of Asahi Komatsu Co., Ltd.) was charged and mixed for 2 minutes to obtain a calcium carbonate mixture.

35.81 g of polyoxyethylene rosin acid ester (ethylene oxide addition mole number 15, product of Toho Chemical Co., Ltd.), 62.56 g of polyethylene glycol (PEG-400, Sanyo Chemical Co., Ltd.), and polyoxypropylene alkyl ether phosphate ester (Drilles AA, 1.63 g of Japan Emulsifier Co., Ltd. was mixed to prepare a binder premix.

6.45 g of binder premix was added to the calcium carbonate mixture, followed by mixing for 15 minutes to obtain a binder-containing mineral carrier.

2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide (flusulfamide, purity 98%, manufactured by Mitsui Chemicals Co., Ltd.) 51.01 g, calcium carbonate (micron ST) -130, Asahi Komatsu Co., Ltd.) 41.75 g, hydrous amorphous silicon dioxide (Caprex® 80D, 7.24 g of Degusa Japan Co., Ltd.) were mixed and then ground with an air mill to prepare an active ingredient premix for soil disease control. .

9.3 g of the active ingredient premix for soil disease control was added to the binder-containing mineral carrier, followed by mixing for 15 minutes to obtain 1500 g of the spray agent for soil disease control obtained.

Preparation Example 2 Preparation of Flusulfamid 0.3% Injection Preparation

In Formulation Example 1, instead of using polyoxyethylene rosin acid ester (ethylene oxide addition mole number 15, product of Toho Chemical Co., Ltd.), polyoxyethylene rosin acid ester (ethylene oxide addition mole number 3, product of Toho Chemical Co., Ltd.) Except for using, the same operation as in Formulation Example 1 was carried out to obtain a spray agent for soil disease control.

Preparation Example 3 Preparation of Flusulfamide 0.3% Injection Preparation

In Formulation Example 1, instead of using polyoxyethylene rosin acid ester (ethylene oxide added mole number 15, manufactured by Toho Chemical Co., Ltd.), polyoxyethylene rosin acid ester (ethylene oxide added mole number 12, manufactured by Toho Chemical Co., Ltd.) Except for using, the same operation as in Formulation Example 1 was carried out to obtain a spray agent for soil disease control.

Preparation Example 4 Preparation of Flusulfamide 0.3% Injection Preparation

In Formulation Example 1, polyoxyethylene polyoxypropylene rosin acid ester (ethylene oxide addition mole number 12, propylene oxide addition) was added instead of using polyoxyethylene rosin acid ester (ethylene oxide addition mole number 15, manufactured by Toho Chemical Co., Ltd.). Except for using the number of copies 6 and Toho Chemical Co., Ltd.), the same operations as in Formulation Example 1 were carried out to obtain an injection agent for soil disease control.

Preparation Example 5 Preparation of Flusulfamide 0.3% Injection Preparation

In Formulation Example 1, instead of using polyoxyethylene rosin acid ester (ethylene oxide added mole number 15, manufactured by Toho Chemical Co., Ltd.), polyoxyethylene polyoxypropylene rosin acid ester (ethylene oxide added mole number 3, propylene oxide addition The same procedure as in Formulation Example 1 was carried out except that the number of copies 3 and Toho Chemical Co., Ltd. product was used to obtain a spray agent for soil disease control.

Preparation Example 6 Preparation of Fluazin 0.5% Injection Preparation

Calcium carbonate (A charcoal, particle size: 500 µm or more, 0%, 150 µm or less, 10.0% or less, Asahi Komatsu Co., Ltd.) 1428.55 g and calcium carbonate (K-250,) as a mineral carrier to KENMIX Co., Ltd. (manufactured by Aikosha Co., Ltd.) Particle diameter: 425 or more, 1.0% or less, 45 or less, 19% or less, 50.00 g of Asahi Komatsu Co., Ltd.) was added thereto and mixed for 2 minutes.

A binder premix was prepared by mixing 37.44 g of polyoxyethylene rosin acid ester (15 moles of ethylene oxide added, manufactured by Toho Chemical Co., Ltd.) and 62.56 g of polyethylene glycol (PEG-400, manufactured by Sanyo Chemical Co., Ltd.).

6.45 g of binder premix was added to the calcium carbonate mixture, followed by mixing for 15 minutes to obtain a binder-containing mineral carrier.

3-chloro-N- (3-chloro-5-trifluoromethyl-2-pyridyl) -α, α, α-trifluoro-2,6-dinitro-p-toluidine (fluazin, purity 99%, synthetic) 50.51 g, calcium carbonate (Microcal ST-130, manufactured by Asahi Komatsu Co., Ltd.) 42.49 g, hydrous amorphous silicon dioxide (Caprex® 80D, manufactured by Degusa Japan Co., Ltd.) 7.00 g, and then mixed with an air mill The active ingredient premix for soil disease control was adjusted.

15.00 g of the active ingredient premix for soil disease control was added to the binder-containing mineral carrier, followed by mixing for 15 minutes to obtain 1500 g of the spray agent for soil disease control obtained.

Preparation Example 7 Preparation of Amisulbrom 0.5% Injection Preparation

3-Chloro-N- (3-chloro-5-trifluoromethyl-2-pyridyl) -α, α, α-trifluoro-2,6-dinitro-p-toluidine according to Formulation Example 6 Instead of using (fluazin, 99% purity, synthetic), 3- (3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1, 2 Except for using, 4-triazole-1-sulfonamide (Amisulbrom, purity 99%, a synthetic product), operation similar to the preparation example 6 was performed and the preparation agent for soil disease control was obtained.

(Example 8)

The preparation of Example 1 was carried out in the same manner as in Preparation Example 1, except that the binder premix containing polyoxyethylene rosin acid ester (ethylene oxide addition mole number 15, manufactured by Toho Chemical Co., Ltd.) was not added. A spray preparation was obtained.

(Example 9)

Calcium carbonate (A charcoal, particle size: 500 µm or more, 0%, 150 µm or less, 10.0% or less, 1,3.25 g, manufactured by Asahi Komatsu Co., Ltd.) and calcium carbonate (K-250,) as a mineral carrier in KENMIX Co., Ltd. Particle diameter: 425 µm or more, 1.0% or less, 45 µm or less, 19% or less, 150 g of Asahi Komatsu Co., Ltd.) was charged and mixed for 2 minutes. Next, 6.45 g of 20% aqueous polyvinyl alcohol solutions (Gosenol GL-05, manufactured by Nihon Kosei Chemical Co., Ltd.) prepared in advance were added thereto, followed by mixing for 15 minutes to obtain calcium carbonate with polyvinyl alcohol.

2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide (flusulfamide, purity 98%, manufactured by Mitsui Chemicals Co., Ltd.) 51.01 g, calcium carbonate (Micro ST -130, Asahi Komatsu Co., Ltd.) 41.75 g and hydrous amorphous silicon dioxide (Caprex # 80D, Degusa Japan Co., Ltd.) 7.24 g were mixed, and then ground with an air mill to adjust the active ingredient premix for soil disease control.

9.3 g of the active ingredient premix for soil disease control was added to the calcium carbonate to which the polyvinyl alcohol adhered, and after mixing for 15 minutes, it was air dried overnight to obtain 1495 g of the spray agent for soil disease control.

<Evaluation>

Navigine powder (commercial soil pest control agent containing 0.3% of flu sulfamide, product made by Mitsui Chemical Co., Ltd.), proside powder (commercial soil disease control agent containing 0.5% of fluazinam) as said preparation example 1-9, and a control agent , Ishihara Industrial Co., Ltd.). In addition, the effect of controlling the plants was compared and examined.

Test Example 1 Suspension Index Measurement

The floating index was measured using the navigable powder and the frontside powder as the soil pest control agent prepared in Formulation Examples 1-9, and a commercial control agent (commercial soil disease control agent). The measurement of the floating index was performed three times in accordance with the method according to "Notification of the Director of the 13th Production No. 3987 of January 10, 2014" and obtained the arithmetic mean value. The results are shown in Table 1.

In addition, the floating index is used as an index for judging the drift property (gritability) of the pesticide preparation, and the larger the value, the larger the separation (spreading).

TABLE 1

As is apparent from Table 1, Formulation Examples 1 to 7, which are spray preparations for soil disease control according to the present invention, are Formulation Examples 8 and 7, which did not add a binder premix containing a polyoxyalkylene resin acid ester. Compared with the commercially available control agent (navigine powder, proside powder), it is clear that the particle | grains (scattering powder) are the injection agent which suppressed significantly. In addition, the preparation example 9 which used polyvinyl alcohol as a binder is suppressed segregation similarly to the spraying agent for soil disease control which concerns on this invention.

Test Example 2 Soil Disease Control Effect Test (Port Test)

-Komatsuna (slightly stronger vegetables than spinach) root gall disease control test-

Plasmodiophora brassicae of cruciferous vegetables used for the test was prepared as follows. In a freezer at −20 ° C., sterilized water equal to or more than twice the amount of preservatives was added to the roots of the preserves, and the grinding liquid obtained by pulverizing with a mixer for 5 minutes was filtered with a quadruple gauze. The solution was centrifuged at 2000 rpm for 10 minutes, the supernatant was discarded, and sterilized water was added again to the settling residue and homogenized with a mixer. Centrifugation was performed 2 to 3 times to wash dormant spores, and then the resultant precipitated dormant spores were diluted and used to have a spore concentration of 1 × 10 ⁶ / g soil.

Prepared root-mycobacterial dormant spores were dropped on 3 kg of soil and mixed well. After adding a predetermined amount of the spray agent for controlling soil diseases prepared in Formulation Examples 1 to 9, the mixture was further mixed, and then filled into three unglazed pots having a diameter of 15 cm, and Komatsuna (breed: black leaf fresh) seeds 20 The grains were sown and grown in a greenhouse. After two sowing periods, ten of them were grown, and others were washed away. Six weeks after sowing, the roots were dug out, washed with water, the presence or absence of root nodule growth and the incidence thereof were examined to determine the effect. In addition, the incidence degree was implemented by the incidence index of the 5-step evaluation of 0-4 shown below, and the incidence degree and control value were calculated | required by the following formula | equation 1 and formula 2, respectively. The test results are shown in Table 2 and Table 3. In addition, Table 2 and Table 3 differ in test days.

In addition, while the test | inspection performed the visual observation of the presence or absence of the weakness which appeared in the ground part, and the occurrence of the weakness was judged by the height six weeks after processing, no weakness was observed either.

Incidence Index

0: There was no bump formation.

1: A small nodule formed at the end of the root and side roots.

2: Less than one-third of the original root was diseased.

3: More than one third and less than two-thirds of the roots were diseased.

4: More than two-thirds of the original root was diseased, and there was little thin root.

Incidence = ∑ (Incidence Index × Number of Abandons by Index) / (4 × All Abandons) × 100: (Equation 1)

Control value = (Incidence of no treatment-Incidence of pharmaceutical treatment) / (Incidence of non-treatment) × 100: (Equation 2)

TABLE 2

[Table 3]

　

　

As shown in Tables 2 and 3, it is evident that the spray agent for soil disease control according to the present invention (Examples 1, 2, 3, and 5) has the same effect as that of the conventional powder against Komatsu and root-knot diseases.

In addition, Formulation Example 9 has insufficient control effect against Komatsu and root gall disease.

As is clear from the above test examples, the spray agent for controlling soil diseases of the present invention can be used simply and safely without preparing a chemical liquid, and scattering (drift) is suppressed. In addition, when the spray agent for soil disease control is mixed with soil, the active ingredient for soil disease control is separated from the mineral carrier and uniformly dispersed in the soil, thereby producing a stable control effect without causing an imbalance in the concentration of the drug. do.

Claims (11)

An agent for controlling soil diseases, comprising an active ingredient for soil disease control, a mineral carrier, and a polyoxyalkylene resin acid ester. The method of claim 1,
An agent for controlling soil diseases, wherein the polyoxyalkylene resin acid ester is at least one selected from polyoxyethylene resin acid ester and polyoxyethylene polyoxypropylene resin acid ester. The method of claim 2,
An agent for controlling soil diseases, wherein the polyoxyalkylene resin acid ester is at least one selected from polyoxyethylene rosin acid ester and polyoxyethylene polyoxypropylene rosin acid ester. The method of claim 1,
A spray agent for controlling soil diseases, wherein the content ratio of the polyoxyalkylene resin acid ester with respect to the total weight of the spray agent for controlling soil diseases is 0.01 to 1% by weight. The method of claim 1,
The preparation agent for soil disease control whose content rate of the said polyoxyalkylene resin acid ester with respect to the said mineral support is 0.01-11.1 weight%. The method according to any one of claims 1 to 5,
An input agent for the control of soil diseases of which the soil disease is root root disease, wearing disease or late blight. The method of claim 1,
The active ingredient for controlling soil diseases is 2 ', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide, 3-chloro-N- (3-chloro-5- Trifluoromethyl-2-pyridyl) -α, α, α-trifluoro-2,6-dinitro-p-toluidine, and 3- (3-bromo-6-fluoro-2-methylindole An agent for controlling soil diseases, which is at least one selected from -1-ylsulfonyl) -N, N-dimethyl-1, 2, and 4-triazole-1-sulfonamide. The method of claim 1,
Moreover, the preparation agent for soil disease control containing surfactant. The method of claim 1,
A spray agent for controlling soil diseases, wherein the content rate of the mineral carrier with respect to the total weight of the spray agent for controlling soil diseases is 90 to 99.5% by weight. A soil disease control method comprising applying the spray agent for soil disease control according to claim 1 to the soil. A first step of mixing a mineral carrier and a polyoxyalkylene resin acid ester to obtain a binder-containing mineral carrier,
A method for producing a soil pest control agent comprising a second step of mixing the binder-containing mineral carrier and the active ingredient for soil disease control to obtain a spray agent for soil disease control.