JP2767116B2 - Composition for insecticides for weeding and agricultural and horticultural use - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improved herbicidal and agricultural / horticultural insecticide fungicide composition containing a solid pesticide compound having a solubility in water of 100 ppm or less. The present invention relates to a method for efficiently using a hardly soluble solid pesticide compound.

(Prior art) Agrochemicals have greatly contributed to the improvement of yield by controlling pests and insects, labor saving of agricultural work by farmers, and the development of modern agriculture. It is considered that few pesticides that have been sprayed disperse by rain or the like or decompose by light or heat, etc., before reaching the pests and disease fungi and exhibiting their effects, and few of them are acting effectively. For this reason, in order to obtain a practical control effect, an excessive amount of pesticide must be sprayed, which not only has an economic burden on farmers, but also has a negative effect on humans and livestock, and is feared for environmental pollution. In order to solve these problems, search for highly safe, low dose, and highly active pesticides and effective use of existing pesticides have been conducted.

Various studies have been conducted for a long time to efficiently exert pesticidal compounds to their biologically active functions, but it is general to improve the fast-acting effect of finely pulverized solid pesticide compounds having poor water solubility. In addition, inorganic salts are added to improve the penetration of hormonal herbicides into plants (Japanese Patent Publication No. 4722719), and phthalimide derivatives are added to enhance the efficacy of insecticides (Japanese Patent Publication No. 42-14840). ), The use of 2-chloroethylphosphonic acid as a synergist for fungicides (JP-A-51-110033), and the use of 2
Numerous proposals have been made for enhancing and promoting the efficacy of various additives such as the addition of a sulfonyloxyethylphosphonic acid compound (Japanese Patent Application Laid-Open No. 52-70027). As another method, it has been proposed to improve the dissolution property of a poorly water-soluble active ingredient in water on granules for water application by adding an inorganic salt such as sodium silicate (Japanese Patent Publication No. 52-47016).

In addition, pesticides such as poorly water-soluble insecticides, fungicides, herbicides and the like are formulated into powders, granules, wettable powders, emulsions, flowables, and the like, depending on spraying equipment, control methods, and the like. Emulsions in these dosage forms may be due to the fact that the active ingredient forms micelles in the diluted spray liquid and exist as fine particles. The effect tends to be higher than that of the emulsion, and the amount of the active ingredient is often lower in the case of an emulsion when comparing the amount of the dropped drug per area. This suggests the use of an emulsion of an active ingredient, an alkylphenol and a surfactant (Japanese Patent Publication No. 46-31352) as a method of enhancing the efficacy of paddy herbicides, or kneading an active ingredient, a surfactant and water, Proposal as powder, wettable powder or granule after supporting on carrier
−15816).

(Problems to be Solved by the Invention) The object of the present invention is to maximize the biological activity originally possessed by a poorly water-soluble solid pesticide compound,
It is still another object of the present invention to provide a pesticidal fungicide composition for herbicidal and agricultural and horticultural use that has little effect on useful animals and plants, seafood and birds.
As a method for improving the physiological activity of a poorly water-soluble solid pesticidal compound, the above-mentioned pulverization and emulsification of the active ingredient are generally used, but the latter is generally superior to the former. In recent years, however, attention has been paid to environmental pollution due to the application of pesticides.Emulsions in particular use no solvents or reduce the amount of emulsions used due to concerns such as odors due to the solvents that constitute them, and adverse effects on the health of environmental organisms and humans. Studies on the transition to less flowables, wettable powders, etc. have been actively conducted. The bioactive function of flowables and wettable powders depends on the particle size of the poorly water-soluble solid pesticide compound contained therein, and even with various pulverization techniques using a dry method or a wet method, the average particle size It is difficult to reduce the thickness to 0.1 μm or less. Average particle size 0.1 in emulsion dilution
In this sense, it is difficult to say that a flowable or a wettable powder exerts the physiologically active function of a poorly water-soluble solid pesticidal compound to the maximum extent, since a particle having a particle size of μm or less can be easily produced. The same applies to solid preparations such as powders and granules.

On the other hand, the method using various synergists, effect enhancers or effect accelerators requires a safety test of the compound to be added, requires enormous costs, and is not economical. Other methods include the addition of a fixing agent to protect the poorly water-soluble active ingredient from wind and rain after spraying, or an anti-transpiration agent that suppresses evaporation to the atmosphere, and a decomposition prevention to prevent decomposition by sunlight. Addition of an agent may be considered, but no technical knowledge has been found that can actually reduce the practical dose. In order to maintain agriculture and secure agricultural products in a stable, economical and safe manner, it is necessary to supply more effective, safer and more economical pesticides. Therefore, there is a strong demand for the development of a new method of efficiently using a poorly water-soluble solid pesticide compound which is not available in the prior art.

(Means for Solving the Problems) The herbicidal and agricultural and horticultural insecticide fungicidal composition of the present invention comprises a solid pesticide compound having a solubility in water of 100 ppm or less at room temperature and methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and polyvinylpyrrolidone. After dissolving one or more polymer compounds selected from the group consisting of an organic solvent into an organic solvent to form a solution, the solvent is distilled off, and a substance obtained by distillation is contained as an organic component.

As the solid pesticidal compound used in the present invention, a herbicidal, insecticidal, or fungicidal compound having a solubility in water at room temperature of 100 ppm or less can be used. Specific examples will be given below, but the present invention is not limited thereto. In addition, normal temperature in this invention points out 15-25 degreeC. () Shows the abbreviation and the solubility (ppm) in water at normal temperature.

(Insecticide) 2-tert-butylimino-3-isopropyl-5-phenyl-tetrahydro-1,3,5-thiadiazin-4-one (buprofezin, 0.9) 0-2-chloro-1- (2,4-dichlorophenyl) ) -Vinyl-0,0-dimethylphosphate (CVMP, 11) 3-methyl-1,5-bis (2,4-xylyl) -1,3,5-triazapentane-1,4-diene (amitraz, 1) Isopropyl 4,4'-dibromobenzylate (phenisobromolate, <0.5) (herbicide) 2-benzothiazol-2-yloxy-N-methylacetonitrile (mefenacet, 4) 4- (2,4- Dichlorobenzoyl) -1,3-dimethyl-5
-Pyrazoyl-p-toluenesulfonate (pyrazolate, 0.056) 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine, 30) 2,4,6-trichlorophenyl-4'-nitrophenyl ether ( CNP, <1) 2,4-dichlorophenyl-3'-methoxy-4'-nitrophenylether (chloromethoxynil, 0.3) α- (2-naphthoxy) propionanilide (naproanilide, 0.74) 2-chloro-4,6 -Bis (ethylamino) -s-triazine (CAT, 5) α, α, α-trifluoro-2,6-dinitro-N, N-dipropylaniline (trifluoro, <1) (RS) -2-bromo- N- (α, α-dimethylbenzyl) -3,3-dimethylbutylamide (bromobutide, 2) (bactericide) diisopropyl-1,3-dithiolan-2-ylidene-malone G (isoprothiolane, 48) 4,5,6,7-tetrachlorophthalide (fusalide, 2.5) 3'-isopropoxy-2-methyl-benzanilide (mepronil, 12.7) 2,4-dichloro-6- (orthochlor Anilino) -1,3,5
-Triazine (triazine, 8) methyl-1- (butylcarbamoyl) -2-benzimidazolecarbamate (benomyl, 4) tetrachloroisophthalonitrile (TPN, 0.6) N- (parafluorophenyl) -dichloromaleimide (fluoroisid) , 5.9) α, α, α-trifluoro-3'-isopropoxy-O
-Tolanilide (flutranyl, 9.6) N- (3,5-dichlorophenyl) -1,2-dimethylcyclopropane-1,2-dicarboximide (procymidone, 4.5) 1- (4-chlorophenoxy) -3, 3-dimethyl-1-
(1,2,4-triazol-1-yl) -2-butanone (triadimefon, 0.007) 1,4-bis- (2,2,2-trichloro-1-formamidoethyl) piperazine (trifolin, 6) 1- (4-chlorobenzyl) -1-cyclopentyl-3
-Phenylurea (pencyclone, 0.4) Next, the polymer compound used in the present invention is a polymer compound which is solid at room temperature, and is methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and polyvinylpyrrolidone. In the present invention, the mixing ratio of the pesticide compound and the polymer compound is 10: 1 to 1:10, preferably 2: 1 to 1: 5, by weight.
It is. These polymer compounds used in the present invention are known substances, and are conventionally used in the field of agrochemicals, for example, as binders, thickeners or coating agents. However, in the present invention, the method for producing the active ingredient is special, and the active ingredient is obtained by dissolving the solid pesticide compound and the polymer compound in an organic solvent and distilling off the solvent. In a conventional method such as simply mixing a solid pesticide compound and a polymer compound into a preparation, and dissolving the polymer compound in water to obtain the herbicidal and agricultural / horticultural insecticidal fungicide composition of the present invention. Can not. A technique for improving the biological effect of a water-insoluble solid pesticide compound by such a method has not yet been found.

Further, the organic solvent that can be used in the present invention is an organic solvent that can be easily distilled off under normal pressure or reduced pressure, and can be used as long as it has the ability to sufficiently dissolve the pesticide compound and the polymer compound. Usually, the boiling point is 100 ° C. or less under normal pressure. From the viewpoint of safety, use of alcohols and halogenated hydrocarbons is preferred. For example, methanol, ethanol, dichloromethane or a mixed solvent thereof can be used. The method for producing a substance comprising a pesticide compound and a polymer compound in the present invention (hereinafter referred to as the substance of the present invention) includes dissolving the pesticide compound and the polymer compound in an organic solvent at room temperature or by heating, and then subjecting the mixture to normal pressure. Alternatively, it can be obtained by distilling off the solvent by heating at room temperature or under reduced pressure. As a method for distilling off the organic solvent, a spray drier, a fluidized bed drier, a heated high-speed stirrer (Henschel mixer, vertical granulator, etc.), a reduced-pressure Nauter mixer, and the like can be used. Further, the herbicidal and agricultural and horticultural insecticidal fungicidal compositions of the present invention are obtained by dissolving a solid pesticide compound and a polymer compound in an organic solvent to form a solution, and then inverting the solution to an inorganic or organic powder or granular carrier insoluble in the organic solvent. Or by adding them to a solution of the organic solvent to form a suspension, and evaporating the organic solvent to obtain a composition containing the substance of the present invention coated or adsorbed on a powder or a granular carrier. Can also.

The inorganic or organic powder or granular carrier insoluble in an organic solvent will be described. Examples of the inorganic powder include minerals such as clay, talc, diatomaceous earth, and bentonite; salts such as sodium chloride, ammonium sulfate, calcium carbonate, and barium sulfate; and white carbon. Lactose as organic powder,
Dextrose, starch, dextrin and the like are suitable.
Further, the above-mentioned powders may be artificially made into a granular carrier by a granulator or the like, or a naturally occurring granular carrier such as silica sand may be used. The amounts of these powders and granular carriers used vary depending on the blending amounts of the solid pesticide compound and the polymer compound, but are usually 1 to 1000, preferably 5 to 100 of the solid pesticide compound in weight ratio.

The herbicidal and agricultural and horticultural insecticide fungicide composition of the present invention further comprises:
Dusts, granules, and wettable powders can be prepared by using auxiliaries, extenders, and the like usually used in agricultural chemical formulations. Auxiliary agents such as antidegradants, physical property improvers, surfactants, and binders, and fillers such as clay, talc,
Natural minerals such as bentonite and diatomaceous earth, inorganic salts such as calcium carbonate, calcium sulfate and barium sulfate, sugars such as sucrose and glucose, and white carbon can be used.

Next, methods for producing various formulations of the insecticidal fungicidal composition for weeding and agricultural and horticultural use of the present invention will be described. The present invention is not limited by the following examples.

Dust (a) The substance of the present invention, an auxiliary agent, an extender and the like are uniformly mixed and pulverized to obtain a dust.

(B) A powder obtained by coating or adsorbing and supporting the substance of the present invention as it is or by uniformly mixing and pulverizing other auxiliary agents, extenders and the like to obtain a powder.

Granules (a) The substance of the present invention as it is, or a powder obtained by uniformly mixing and pulverizing by adding an auxiliary agent, an extender and the like, is coated on a natural or artificial granular carrier via a binder to obtain granules.

(B) Granules obtained by coating or adsorbing and carrying the substance of the present invention are sieved to obtain granules.

(C) A powder obtained by coating or adsorbing and supporting the substance of the present invention is coated on a natural or artificial granular carrier via a binder to obtain a granule.

(D) The substance of the present invention or a powder coated with or adsorbed and supported by the substance of the present invention and an auxiliary agent, an extender, and the like are uniformly mixed or mixed and pulverized to obtain granules by a kneading granulation method.

Wettable powder (a) The substance of the present invention, a surfactant, an auxiliary agent, a bulking agent and the like are uniformly mixed and pulverized to obtain a wettable powder.

(B) The powder coated or adsorbed and supported by the substance of the present invention is used as it is, or a surfactant, an auxiliary agent, an extender and the like are added and uniformly mixed and pulverized to obtain a wettable powder.

(C) When preparing a granular material coated with or adsorbed and supported by the substance of the present invention, a surfactant, an auxiliary agent, etc. are added in advance to obtain a granular material, and if necessary, sieved to obtain a granular wettable powder. Get.

(Examples of the Invention) Next, the present invention will be specifically described with examples.
The present invention is not limited to these examples. All parts /% in each example are parts by weight /% by weight.

(Example 1) 15 parts of mepronil, polyvinylpyrrolidone (average molecular weight
40000) 30 parts ethanol / chloroform mixed solvent (1 /
1) After dissolving in 500 parts, ethanol is distilled off under reduced pressure to obtain a residue. This residue, 45 parts of white carbon, and 910 parts of clay were uniformly mixed and pulverized to obtain a powder containing 1.5% of mepronil.

Example 2 The polyvinylpyrrolidone of Example 1 was replaced with methylcellulose to obtain a powder containing 1.5% of mepronil.

(Example 3) The polyvinylpyrrolidone of Example 1 was replaced with hydroxypropylcellulose to obtain a powder containing 1.5% mepronil.

Example 4 The polyvinylpyrrolidone of Example 1 was replaced with hydroxypropylmethylcellulose to obtain a powder containing 1.5% of mepronil.

(Example 5) A mixture of polyvinylpyrrolidone of Example 1 with methylcellulose and hydroxypropylmethylcellulose (weight ratio)
1: 1) to give a powder containing 1.5% mepronil.

(Example 6) Mepronil of Example 1 was replaced with CVMP and CVMP 1.5%
Was obtained.

(Example 7) Mepronil of Example 2 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Example 8) Mepronil of Example 3 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Example 9) Mepronil of Example 4 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Example 10) Mepronil of Example 5 was replaced with CVMP, and CVMP 1.5%
Was obtained.

Example 11 15 parts of fusalide and 45 parts of polyvinylpyrrolidone (average molecular weight 360,000) are dissolved in 1000 parts of a mixed solvent of methanol and dichloromethane (1: 1). 60 parts of white carbon was put into a fluidized bed granulating dryer (STREA-1 manufactured by Fuji Sangyo Co., Ltd.), and the previously prepared methanol / dichloromethane solution was sprayed and dried to obtain a granular composition. This composition and 880 parts of clay were uniformly mixed and pulverized to obtain a powder containing 1.5% of fusalide.

Example 12 The polyvinylpyrrolidone of Example 11 was replaced with methylcellulose to obtain a powder containing 1.5% of fusalide.

(Example 13) The polyvinylpyrrolidone of Example 11 was replaced with hydroxypropyl methylcellulose to obtain a powder containing 1.5% of fusalide.

(Example 14) The polyvinylpyrrolidone of Example 11 was replaced with hydroxypropyl cellulose to obtain a powder containing 1.5% of fusalide.

(Example 15) The polyvinylpyrrolidone of Example 11 was mixed with polyvinylpyrrolidone and hydroxypropylcellulose (weight ratio 1:
In place of 1), a powder containing 1.5% of fusalide was obtained.

(Example 16) 200 parts of pencyclone and 200 parts of polyvinylpyrrolidone (average molecular weight 10,000) are dissolved in 3000 parts of chloroform. Henschel Mixer (Mitsui Miike Seisakusho Co., Ltd., F
A mixture of 400 parts of white carbon, 100 parts of clay, 50 parts of calcium alkylbenzenesulfonate, and 50 parts of polyoxyethylene nonylphenyl ether was put into M-20B), the previously prepared chloroform solution was sprayed, dried, and mixed and ground. A wettable powder containing 20% of pencyclone was obtained.

(Example 17) Polyvinylpyrrolidone of Example 16 was replaced with hydroxypropylcellulose to obtain a wettable powder containing 20% of pencyclone.

(Example 18) The polyvinyl pyrrolidone of Example 16 was replaced with methyl cellulose to obtain a wettable powder containing 20% of pencyclone.

(Example 19) The pencyclone of Example 16 was replaced with TPN to obtain a wettable powder containing 20% of TPN.

Example 20 The pencyclone of Example 17 was replaced with TPN to obtain a wettable powder containing 20% of TPN.

(Example 21) The pencyclone of Example 18 was replaced with TPN to obtain a wettable powder containing 20% of TPN.

(Example 22) 50 parts of flutranil and 150 parts of polyvinylpyrrolidone (average molecular weight 360,000) are dissolved in 2,000 parts of a mixed solvent of methanol and dichloromethane (1/1), and 800 parts of lactose is added to form a suspension. This suspension is spray granulated and dried (Laboratory Matrix LMA-10 / 2G, manufactured by Nara Corporation)
Was granulated and dried to obtain a granular composition. The granular composition was sized (850 to 1700 μm) to obtain a granule containing 5% of flutolanil.

(Example 23) The polyvinylpyrrolidone of Example 22 was replaced with hydroxypropylmethylcellulose to obtain granules containing 5% of flutolanil.

(Example 24) The polyvinylpyrrolidone of Example 22 was replaced with hydroxypropylmethylcellulose to obtain a granule containing 5% of flutranil.

(Example 25) The polyvinylpyrrolidone of Example 22 was replaced with methylcellulose to obtain granules containing 5% of flutolanil.

(Example 26) After dissolving 5 parts of buprofezin and 25 parts of hydroxypropylmethylcellulose in a mixed solvent of ethanol and dichloromethane (1: 1), the solvent is distilled off under reduced pressure to obtain a residue. 25 parts of white carbon and 60 parts of diatomaceous earth were added to the residue, and the mixture was uniformly mixed and ground. 835 parts of granular calcium carbonate (850 to 1700 μm) was coated with 50 parts of polyethylene glycol (average molecular weight: 200) as a binder. As a result, granules containing 0.5% of buprofezin were obtained.

(Example 27) Hydroxypropyl methylcellulose of Example 26 was replaced with methylcellulose to obtain granules containing 0.5% of buprofezin.

(Example 28) The hydroxypropylmethylcellulose of Example 26 was replaced with hydroxypropylcellulose to obtain granules containing 0.5% of buprofezin.

Example 29 25 parts of mefenacet and 25 parts of polyvinylpyrrolidone (average molecular weight 10,000) are dissolved in 300 parts of dichloromethane. 800 parts of clay and 150 parts of bentonite were placed in a fluidized-bed granulator / dryer (described above), and the dichloromethane solution prepared above was spray-dried while heating at 60 ° C. and mixing and stirring to obtain a granular composition. This composition is sized (850-1700μm)
Then, granules containing 2.5% of mefenacet were obtained.

(Example 30) The polyvinylpyrrolidone of Example 29 was replaced with hydroxypropylcellulose to obtain granules containing 2.5% of mefenacet.

(Example 31) The polyvinylpyrrolidone of Example 29 was replaced with a mixture of polyvinylpyrrolidone (average molecular weight: 40,000) and hydroxypropylcellulose (1: 2) to obtain granules containing 2.5% mefenacet.

(Reference Example 1) 15 parts of mepronil, polyvinylpyrrolidone (average molecular weight
40000) 30 parts, white carbon 45 parts and clay 910 parts were uniformly mixed and pulverized to obtain a powder containing 1.5% mepronil.

Reference Example 2 The polyvinylpyrrolidone of Reference Example 1 was replaced with methylcellulose to obtain a powder containing 1.5% of mepronil.

Reference Example 3 Polyvinylpyrrolidone of Reference Example 1 was replaced with hydroxypropylcellulose to obtain a powder containing 1.5% of mepronil.

Reference Example 4 Polyvinylpyrrolidone of Reference Example 1 was replaced with hydroxypropylmethylcellulose to obtain a powder containing 1.5% mepronil.

(Reference Example 5) The polyvinylpyrrolidone of Example 1 was replaced with ethyl cellulose to obtain a powder containing 1.5% of mepronil.

(Reference Example 6) Mepronil of Reference Example 1 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Reference Example 7) Mepronil of Reference Example 2 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Reference Example 8) Mepronil of Reference Example 3 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Reference Example 9) Mepronil of Reference Example 4 was replaced with CVMP, and CVMP 1.5%
Was obtained.

(Reference Example 10) 15 parts of Fusaride, 50 parts of white carbon, clay 935
The mixture was uniformly mixed and pulverized to obtain a powder containing 1.5% of fusalide.

(Reference Example 11) 15 parts of Fusaride and 45 parts of polyvinylpyrrolidone (average molecular weight 360,000) are mixed and pulverized, and then suspended in 1000 parts of water. White carbon 60 in fluidized bed granulation dryer (described above)
Then, the aqueous suspension prepared above was sprayed and dried to obtain a granular composition. This composition and 880 parts of clay were uniformly mixed and pulverized to obtain a powder containing 1.5% of fusalide.

(Reference Example 12) Pencuron 200 parts, white carbon 400 parts, clay
300 parts, calcium alkylbenzene sulfonate 50 parts,
A mixture of 50 parts of polyoxyethylene nonylphenyl ether was pulverized with a Jet-0-Miser to obtain an average particle size of 1.
A wettable powder containing 20% of 9 μm pencyclone was obtained.

(Reference Example 13) A mixture of 200 parts of pencyclone, 700 parts of water, 50 parts of calcium alkylbenzenesulfonate, and 50 parts of polyoxyethylene nonylphenyl ether is finely pulverized with a sand grinder, and contains 20% of pencyclon having an average particle size of 0.8 μm. A flowable was obtained.

(Reference Example 14) 200 parts of TPN and polyvinylpyrrolidone (average molecular weight 10
000) A mixture of 200 parts, 400 parts of white carbon, 100 parts of clay, 50 parts of calcium alkylbenzenesulfonate, and 50 parts of polyoxyethylene nonylphenyl ether is pulverized with a jet-O-Miser to obtain a T particle having an average particle size of 2.5 μm.
A wettable powder containing 20% of PN was obtained.

(Reference Example 15) 200 parts of TPN, polyvinylpyrrolidone (average molecular weight 1000
0) 20 parts, water 680 parts, calcium alkylbenzene sulfonate 50 parts, polyoxyethylene nonyl phenyl ether
50 parts of the mixture was pulverized with a sand grinder to obtain a flowable agent containing 20% of TPN having an average particle size of 0.7 μm.

(Reference Example 16) A suspension was prepared with 50 parts of flutolanil, 150 parts of polyvinylpyrrolidone (average molecular weight: 360,000), 800 parts of lactose and 2,000 parts of water. This suspension was granulated and dried by a spray granulation dryer (described above) to obtain a granular composition. The granular composition was sized (850 to 1700 μm) to obtain a granule containing 5% of flutolanil.

(Reference Example 17) The polyvinylpyrrolidone of Reference Example 16 was replaced with corn starch to obtain granules containing 5% of flutolanil. However, warm water was used.

(Reference Example 18) The polyvinylpyrrolidone of Reference Example 16 was replaced with sodium carboxymethylcellulose to obtain granules containing 5% of flutolanil.

(Reference Example 19) 5 parts of buprofezin, 25 parts of polyvinyl alcohol, 50 parts of white carbon and 120 parts of diatomaceous earth were added, and the mixture was uniformly mixed and pulverized to obtain a granular calcium carbonate (850 to 170 parts).
750 parts of polyethylene glycol (average molecular weight 20
0) 50 parts were coated using as a binder to obtain granules containing buprofezin 0.5%.

(Reference Example 20) 25 parts of mefenacet and 25 parts of ethyl cellulose are dissolved in 300 parts of dichloromethane. Put 800 parts of clay and 150 parts of bentonite into a fluidized bed granulation dryer (described above)
The dichloromethane solution prepared above was spray-dried while heating to 60 ° C. and mixing and stirring to obtain a granular composition. This composition was sized (850 to 1700 μm) to obtain granules containing 2.5% of mefenacet.

(Reference Example 21) Tricyclazole (solid at room temperature, water solubility 500p at room temperature)
pm) 10 parts and polyvinylpyrrolidone (average molecular weight 3600
00) 30 parts of methanol / dichloromethane mixed solvent (1 /
1) Dissolve in 1000 parts. 50 parts of white carbon was put into a fluidized bed granulating dryer (STREA-1 manufactured by Fuji Sangyo Co., Ltd.), and the previously prepared methanol / dichloromethane solution was sprayed and dried to obtain a granular composition. This composition and clay 91
0 parts were uniformly mixed and pulverized to obtain a powder containing 1% of tricyclazole.

(Reference Example 22) 10 parts of tricyclazole and 30 parts of polyvinylpyrrolidone (average molecular weight: 360,000) are suspended in 1000 parts of water. 50 parts of white carbon was placed in a fluidized bed granulation dryer (described above), and the previously prepared aqueous suspension was sprayed and dried to obtain a granular composition. This composition and 910 parts of clay were uniformly mixed and pulverized to obtain a powder containing 1% of tricyclazole.

(Reference Example 23) 100 parts of benthiocarb (normal temperature liquid) and 100 parts of hydroxypropylcellulose are dissolved in 1000 parts of dichloromethane. 650 parts of clay and 150 parts of bentonite were placed in a fluidized bed granulation dryer (described above), and the dichloromethane solution prepared above was spray-dried while heating and mixing and stirring at 60 ° C. to obtain a granular composition. This composition is sized (850-1700
μm) to obtain granules containing 10% of benthiocarb.

(Reference Example 24) Benthiocarb 100 parts, clay 700 parts, bentonite 15
After uniformly mixing and pulverizing 0 parts, the mixture is put into a fluidized bed granulating dryer (described above), and an aqueous solution in which 50 parts of pregelatinized starch is dissolved in 500 parts of water is spray-dried while heating and mixing and stirring at 60 ° C. A granular composition was obtained. This composition is sized (850-1700μm)
Then, granules containing 10% of benthiocarb were obtained.

(Effects of the Invention) As described above, the herbicidal and agricultural and horticultural insecticide fungicide compositions of the present invention allow a poorly water-soluble pesticidal compound to act efficiently and obtain a stable biological effect at a low dose. Is safe and economical.

Improvement of biological effect is excellent not only in immediate effect but also in residual effect,
In addition, it is safe to use without any manifestation of phytotoxicity. In the case where the active ingredient is pulverized to improve the fast-acting effect, the active ingredient is easily decomposed by light or heat, or easily eroded by rainfall, etc. Although there is often a concern about the occurrence of phytotoxicity due to adhesion or excessive absorption, the solid pesticidal composition of the present invention provides a safe and stable effect on crops without such a problem, and furthermore, due to scattering of fine particles, etc. It can be used safely without adverse effects on the human body and environment. In a conventional method such as a case where a polymer compound is simply blended into a preparation containing a solid pesticide compound or a case where the polymer compound is dissolved or suspended in water, a highly efficient solid pesticide composition as in the present invention is used. It cannot be obtained, and the present invention has remarkable specialty.

Test Example 1 Rice Blight Control Test Using the powders of Examples 1 to 5 and Reference Examples 1 to 5, a rice blight control test was performed according to the following test method. The results are shown in Table 1.

(Test method) Test plant: 7-leaf paddy rice (variety: Kinnan style) Spray method: Bell jar duster (equivalent to 1kg / 10a) Inoculation: After spraying the drug, the sheath blight fungus cultured on a flat potato medium After a predetermined number of days, the leaf sheath was inoculated and transferred to a vinyl greenhouse in a greenhouse.

Eight days after inoculation, the control value was calculated by the following formula by measuring the length of the sheath spot on the leaf sheath of rice.

Test Example 2 Insecticidal Effect Test Using the dusts of Examples 6 to 10 and Reference Examples 6 to 9, an insecticidal effect test was carried out on the larvae of the brown planthopper, according to the following test method. The results are shown in Table 2.

(Test Method) Using a paddy rice (variety: Asahi Asahi) having a plant height of 20 to 25 cm planted in a magnetic pot having a diameter of 12 cm, dust was sprayed in an amount of 4 kg per 10a and left outdoors for a predetermined number of days.

After a lapse of a predetermined number of days, the magnetic pot was covered with a wire gauze gauge, and about 30 larvae of the third order larvae of the brown planthopper were released per pot. Release insect
After 24 hours, the number of live insects and the number of dead insects were examined to determine the mortality.
The test used three pots for one drug.

Test Example 3 Rice Blast Control Test Using the powders prepared according to Examples 11 to 15 and Reference Examples 10, 11, 21 and 22, a rice blast control test was performed according to the following test method.

Test method Test plant: Four-leaf stage paddy rice (variety: Asahi Aichi) Spraying method: Bell jar duster (equivalent to 1 kg / 10a) Inoculation: After spraying the drug, the blast fungus which was left outdoors for a predetermined number of days was inoculated. After that, they were transferred to a greenhouse greenhouse.

Investigation: The number of lesions was investigated 7 days after inoculation.

The control value was calculated by the following equation. The results are shown in Table 3.

Test Example 4 Rice Blight Control Test Using the wettable powder of Examples 16 to 18 and Reference Example 12 and the flowable agent of Reference Example 13, a rice blight control test was performed according to the following test method. The results are shown in Table 4.

(Test method) Test plant: paddy rice in the 7th leaf stage (variety: Kinnan style) Inoculation: After spraying a prescribed concentration of the drug, inoculate the sheath of rice plant after a prescribed number of days with sheath blight fungus cultured on a flat potato medium. Then, it was transferred to a greenhouse vinyl greenhouse.

Eight days after inoculation, the control value was calculated by the following formula by measuring the length of the sheath spot on the leaf sheath of rice.

Test Example 5 Cucumber and Disease Control Test Cucumber and disease control test were performed using the wettable powder of Examples 19 to 21 and Reference Example 14 and the flowable agent of Reference Example 15 according to the following test method.

Test method Test plant: cucumber (variety: desert semi-white) Spraying method: Spray a spray solution of a predetermined concentration using a spray gun.

Inoculation: The zoospores formed on the diseased plants are suspended in tap water, sprayed with the drug, and sprayed.

Investigation: Seven days after inoculation, the disease severity is investigated according to the following criteria to determine the disease severity.

N: total survey Leaf Number N ^0: number of healthy leaves N ^1: onset area 1/3 less than the number of leaves N ^2: onset area 1/3 or more leaf number less than 2/3 N ^3: onset area 2/3 or more Number of leaves The control value was calculated by the following equation. The results are shown in Table 5.

Test Example 6 Rice Blight Control Test Using the granules of Examples 22 to 25 and Reference Examples 16 to 18, a rice blight control test by water application was performed according to the following test method. The results are shown in Table 6.

(Test method) Field test (15.2 m ² ) Test plant: Paddy rice (variety: Nipponbare) Spraying method: Hand-plowing (21 days before heading) Spraying amount: 2kg and 4kg per 10a Inoculation: 30 days before heading and 45 days before heading Twice, the cells cultivated in the rice straw medium were spread and inoculated to the strain base.

Investigation: 15 days and 30 days after spraying The control value was calculated by calculating the degree of disease as shown below.

The results are shown in Table 6.

N: Number of investigated stems n ⁴ : Number of stems that formed lesions up to flag leaf or leaf sheath n ³ : Number of stems that formed lesions up to next leaf or next leaf sheath n ² : Third leaf or third leaf sheath Number of stems that formed lesions up to n ¹ : Number of stems that formed lesions up to the fourth leaf or less Test Example 7 Insecticidal Effect Test Using the granules of Examples 26 to 28 and Reference Example 19, an insecticidal effect test was performed on the brown hopper, Larvae of the brown planthopper, according to the following test method. The results are shown in Table 7.

(Test method) Granules were sprayed in an amount of 4 kg per 10a using paddy rice (variety: Aichi Asahi) having a plant height of 20 to 25 cm planted in a porcelain pot having a diameter of 12 cm, and allowed to stand outdoors for a predetermined number of days.

After a lapse of a predetermined number of days, the porcelain pot was covered with a wire mesh gate, and about 30 larvae of the third order larvae of the brown planthopper were released. Release insect 48
After a lapse of time, the number of live insects and the number of dead insects were examined to determine the mortality.
The test was conducted in three pots for each drug.
The state of flooding of 2 cm was maintained.

Test Example 8 Herbicidal Effect Test A herbicidal effect test was conducted using the granules of Examples 26 to 31 and Reference Examples 20, 23 and 24 according to the following test method.

(Test method) After using a 1/5000 arel Wagner pot to set a state at the time of scratching, 30 pots of Nobie seeds were sown in each pot and covered with 5 mm of soil. On the 8th day after weed sowing, add test granules 1
1 kg, 2 kg and 3 kg equivalents were treated per 0a. The remaining amount of nobies was investigated 10, 20, and 30 days after drug treatment. In addition, the water depth at the time of the chemical treatment was about 3 cm, and the water was then irrigated to maintain the water depth of 3 cm. The results are shown in Table 8.

Continuation of the front page (56) References JP-A-52-87233 (JP, A) JP-A-54-132231 (JP, A) JP-A-56-43201 (JP, A) JP-A-59-142264 (JP) , A) (58) Field surveyed (Int.Cl. ⁶ , DB name) A01N 25/10

Claims (1)

(57) [Claims] 1. An organic solvent comprising a solid pesticide compound having a solubility in water at room temperature of 100 ppm or less and one or more polymer compounds selected from the group consisting of methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and polyvinylpyrrolidone. A herbicidal and agricultural and horticultural insecticidal fungicide composition comprising a substance obtained by dissolving a solution into a solution and then evaporating the solvent.