JP4986023B2 - Plant disease control composition - Google Patents

Description

  The present invention relates to 3- (3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1H-1,2,4-triazole-1-sulfonamide (WO99 / 21851). And is abbreviated as Compound A below), and relates to a plant disease control agent composition.

  It is described in Patent Document 1 and Patent Document 2 that Compound A is a well-known agricultural and horticultural fungicide and effective in controlling downy mildew of cucurbits, plague of potato, cruciferous clubroot, and the like.

  In addition, powders are widely used because they are inexpensive and have the advantage of not requiring labor such as dilution, and the method of mixing powders with soil is also common in the control of Brassicaceae clubroot.

In the composition containing Compound A, there may be a problem that Compound A decomposes over time, and a composition having excellent storage stability of Compound A has been demanded.
WO99 / 021851 pamphlet Japanese Patent Laying-Open No. 2005-082479

  The problem to be solved by the present invention is to develop and provide a plant disease control composition having excellent storage stability of Compound A.

  As a result of diligent research, the present inventors have found that a compound which is an agrochemical active ingredient by blending in the composition one or more selected from the group consisting of polyhydric alcohols, epoxidized vegetable oils, glycidyl ethers and isopropyl phosphates It was found that decomposition of A can be suppressed and storage stability can be improved. That is, the present invention provides a plant disease control agent composition (hereinafter referred to as the present invention composition) described in [1] to [3] below and an agrochemical active ingredient described in [4] to [6] below. The present invention relates to a decomposition preventing method (hereinafter referred to as the method of the present invention).

  [1] (a) One or more selected from the group consisting of polyhydric alcohol, epoxidized vegetable oil, glycidyl ether, isopropyl phosphate ester and Doreles B (trade name) as an adjuvant, and (b) 3 as an agrochemical active ingredient A plant comprising-(3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1H-1,2,4-triazole-1-sulfonamide Disease control agent composition.

  [2] The plant disease control agent composition according to the above [1], wherein the polyhydric alcohol is at least one selected from the group consisting of alkylene glycol, polyalkylene glycol and glycerin.

  [3] The plant disease control agent composition according to the above [1], wherein the polyhydric alcohol is diethylene glycol or glycerin.

  [4] (a) One or more selected from the group consisting of polyhydric alcohols, epoxidized vegetable oils, glycidyl ethers and isopropyl phosphates as adjuvants, and (b) 3- (3-bromo-6 as pesticidal active ingredients -Fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1H-1,2,4-triazole-1-sulfonamide is used in combination to decompose the pesticidal active ingredient How to prevent.

  [5] The method for preventing decomposition according to the above [4], wherein the polyhydric alcohol is at least one selected from the group consisting of alkylene glycol, polyalkylene glycol and glycerin.

  [6] The method for preventing decomposition according to the above [4], wherein the polyhydric alcohol is diethylene glycol or glycerin.

  The plant disease control agent composition of the present invention has excellent storage stability in the composition of Compound A, which is an agrochemical active ingredient.

  The form of the composition of the present invention is not particularly limited, and includes solid, liquid and gel compositions. Specific examples include a soluble concentrate, an emulsion (emulsifiable concentrate), a wettable powder, a water soluble powder, a water dispersible granule, and a granular water solvent (water). soluble granule, suspension concentrate, concentrated emulsion, suspoemulsion, microemulsion, dustable powder, granule tablet and emulsification Emulsifiable gel. Note that the powder includes DL powder and flow dust, and is used in the meaning of the term according to the name in the type name of the Ministry of Agriculture, Forestry and Fisheries.

  The proportion of Compound A in the composition of the present invention is usually 0.1 to 20% by weight, preferably 0.1 to 10% by weight, more preferably 0.1 to 5% by weight, based on the total weight of the composition. It is.

  The pesticidal active ingredient of the present invention is further added to one or more known pesticides such as herbicides, insecticides, acaricides, nematicides, antiviral agents, plant growth regulators, fungicides, synergists, An attractant, repellent, etc. can also be mixed, and in this case, a more excellent effect may be shown. As a known agrochemical, a particularly preferable one is a fungicide. Specific examples of common names are as follows, but the general names are not necessarily limited to these.

Bactericides: acibenzolar-S-methyl, acylaminobenzamide, acypetacs, aldimorph, amobam, ampropyfos, anilazine , Allyl alcohol, aureofungin, azaconazole, azithiram, azoxystrobin, barium polysulfide, benalaxyl, benodanil , Benomyl, benquinox, bentaluron, benthiavalicarb, benthiazole, benzalkonium chloride, benzamacril, benzamorf , Benzohydroxamic acid, binapacryl, biphenyl, bitertanol, bithionol, bethoxazine, bordeaux mixture, boscalid, blastcidin -S (blasticidin-S), bromoconazole, bupirimate, buthiobate, butylamine, calcium polysulfide, captafol, captan, copper Copper oxychloride, carpropamid, carbamorph, carbendazim, carboxin, carvone, cheshunt mixture, quinomethionate (chin) omethionat), clobenthiazone, chloraniformethane, chloranil, chlorfenazol, 5-chlor-7- (4-methyl-piperidin-1-yl) -6- (2,4,6-trifluor-phenyl)-[1,2,4] triazolo [1,5-a] pyrimidin, chloroneb, chloropicrin, chlorothalonil, chloroquinox , Chlozolinate, climbazole, clotrimazole, copper acetate, copper carbonate, basic, copper hydroxide, copper naphthalene ( copper naphthenate, copper oleate, basic copper oxychloride, copper sulfate, basic copper sulfate, basic, copper zinc chromate (co pper zinc chromate, cresol, cufraneb, cuprobam, cyazofamid, cyclafuramid, cycloheximide, cyflufenamid, cymoxanil, cypendazole (Cypendazole), cyproconazol, cyprodinil, cyprofuram, dazomet, DCP (DBCP), debacarb, decafentin, dehydroacetic acid ), Dichlone dichlorophen, dichlozoline, diclobutrazol, dichlofluanid, diclomedine, dicloran, diethofencarb , Diethyl pyrocarbonate, diclocymet, difenoconazole, diflumetorim, dimethirimol, dimethomorph, dimoxystrobin, dinicosazole (icon) M (diniconazole-M), dinobuton dinocap (dinocap), dinocap-4 (dinocap-4), dinocap-6 (dinocap-6), dinocton, dinosulfon, dinoterbon, Diphenylamine, dipyrithione, disulfiram, ditalimfos, dithianon, DNOC, dodemorph, dodine, drazoxolone Edifenphos, epoxiconazole, etaconazole, ethirimol, etridiazole, etem, ethaboxam, etoxyquine, ethylmercury acetate , Ethylmercury bromide, ethylmercury chloride, ethylmercury phosphate, famoxadone, fenarimol, febuconazole, fenamidone, fendazo Fendazosulam, fenfuram, fenhexamid, fenoxanil, fenpiclonil, fenpropidin, fenpropimol Fenpropimorph, fentin, ferbam, ferimzone, fluazinam, fludioxonil, fluoroimide, fluopicolide, fluquinconazole, flusilazole (flusilconazole) flusilazole, fursulfamide, flutolanil, flutriafol, folpet, fosetyl-aluminium, fuberidazole, fluralaxyl, furametpyr, Fenaminosulf, fenapanil, fenitropan, phenoxanil, flumetover, flumorph, fluotrimazole, fluoxarim Fluoxastrobin, furametpyr, furcarbanil, fluconazole, furconazole-cis, furmeazolex, furmecyclox, furophanate, guazatine, glyodin , Griseofulvin, hexachlorobenzene, hexaconazole, hymexazol, halacrinate, hexachlorobutadiene, hexaconazole, hexylthiofos, hydroxy Quinoline sulfate (8-hydroxyquinoline sulfate), imazalil, imibenconazole, iminoctadine, ipconazole, ipro Iprobenfos, iprodione, isoprothiolane, iprovalicarb, isovaledione, kasugamycin, kresoxim-methyl, mancopper, mancob, manprob mandipropamid, maneb, mepanipyrim, mepronil, metalaxyl, metconazole, methasulfocarb, metiram, metitominostrobin, butanil ), MTF-753 (study name), mebenil, mecarbinzid, mercuric chloride, mercuric oxide, mercurous chloride, metalaxylous M ( metala xyl-M), metam, metazoxolon, metasulfocarb, methfuroxam, methyl bromide, methyl isothiocyanate, methylmercury benzoate , Methylmercury dicyandiamide, metrafenone, metsulfovax, milneb, myclozolin, 2-methoxyethylmercury chloride nabam, nickel bis (dimethyl) Dithiocarbamate (nickel bis (dimethyldithiocarbamate)), nitrothal-isopropyl, nuarimol, natamycin, nicobifen, nitrosti Nitrostyrene, octhilinone, offurace, oxadixyl, oxycarboxin, oxpoconazole fumarate, OCH, Orysastrobin, Organic copper (oxine copper), pefurzoate, penconazole, pencicuron, penthiopyrad, phthalide, piperalin, polyoxins, potassium hydrogen carbonate , Probenazole, prochloraz, procymidone, propamocarb hydrochloride, propiconazole, propineb, pyrazophos, pyrifenox ( pyrifenox, pyrimethanil, pyroquilon, pentachlorophenol (PCP), urea phenylmercuriurea, phenylmercury acetate, phenylmercury chloride, phenylmercury Nitrate (phenylmercury nitrate), phenylmercury salicylate, phosdiphen, picoxystrobin, polycarbamate, polyoxorim, potassium azide, Potassium polysulfide, proquinazid, prothiocarb, prothioconazole, pyracarbolid, pyraclosto Bin (pyraclostrobin), pyridinitrile (pyridinitril), pyroxycyclo (pyroxychlor), pyroxysulfur (pyroxyfur), phenylphenol (2-phenylphenol), quinomethionate (quinomethionate), quinoxyfen (quinoxyfen), quintozene (quintozene) quinacetol (quinacetol), quinamide (Quinazamid), quinconazole, rabenzazole, sodium hydrogen carbonate, sodium hypochlorite, sulfur, spiroxamine, salicylanilide, Silthiofam, simeconazole, sodium azide, sodium orthophenylphenoxide, sodium pentachlorophenoxide, Sodium polysulfide, streptomycin, tebuconazole, tecnazene, tetraconazole, thiabendazole, thiadiazin / milneb, thifluzamide, phanate thioate methyl), thiram, tolclofos-methyl, tolylfluanid, triadimefon, triadimenol, triazoxide, triazoxide, tricyclazole, tridemorph (tridemorph), triflumi Sol (triflumizole), triforine, triticonazole, TCMTB, tecloftalam, tecoram, thiadiflua (thi) adifluor, thicyofen, thiochlorfenphim, thiomersal, thiophanate, thioquinox, tiadinil, thioxymid, tolylmercury acetate, Triamiphos, triarimol, triazbutil, tributyltin oxide, trichlamide, trifloxystrobin, validamycin, vinclozolin, zinc sulfate ( zinc sulfate, zineb, ziram, zoxamide, zarilamid, zinc naphthenate, eclomesol, and shiitake mycelium extract.

  Bactericides: streptomycin, tecloftalam, oxyterracycline, oxolinic acid and the like.

  Nematicides: aldoxycarb, cadusafos, fosthiazate, fosthietan, oxamyl and fenamiphos.

  Acaricides: acequinocyl, amitraz, bifenazate, bromopropylate, chinomethionat, chlorobezilate, clofentezine, cyhexatine, Dicofol, dienochlor, etoxazole, fenazaquin, fenbutatin oxide, fenpropathrin, fenproximate, halfenprox, halfenprox, Hexythiazox, milbemectin, propargite, pyridaben, pyrimidifen, tebufenpyrad and the like.

  Insecticides: abamectin, acephate, acetamipirid, aldicarb, allethrin, azinphos-methyl, bendiocarb, benfuracarb, benfuracarb bensultap, bifenthrin, buprofezin, butocarboxim, carbaryl, carbofuran, carbofuran, carbosulfan, cartap, chlorfenapyr, chlorpyrifos ), Chlorfenvinphos, chlorfluazuron, clothianidin, chromafenozide, chlorpyrifos-methyl, cycloprotorin ( cycloprothrin), cyfluthrin, beta-cyfluthrin, cypermethrin, cyromazine, cyhalothrin, lambda-cyhalothrin, deltamethrin, diafentiu Ron (diafenthiuron), diazinon, diacloden, diflubenzuron, dimethylvinphos, diofenolan, disulfoton, dimethoate, emamectin-benzoate, emamectin-benzoate EPN, esfenvalerate, ethiofencarb, ethiprole, etofenprox, etrimfos, fenitrothion, fenob Carb (fenobucarb), phenoxycarb (fenoxycarb), fenpropathrin (fenpropathrin), fenvalerate, fipronil, fluacrypyrim (fluacrypyrim), flucythrinate, flufenoxuron Flufenprox, tau-fluvalinate, fonophos, formetanate, formothion, furathiocarb, halofenozide, hexaflumuron, hydra Methylnon (hydramethylnon), imidacloprid (isoidaphos), indoxacarb (indoxacarb), isoprocarb (isoprocarb), isoxathion (isoxathion), lufenuron (lufenuron), malathion (ma lathion, metalaldehyde, methamidophos, methidathion, methacrifos, metalcarb, methomyl, methoprene, methoxychlor, methoxyfenozide, monochrome Monofotophos, muscalure, nidinotefuran, nitenpyram, omethoate, oxydemeton-methyl, oxamyl, parathion, parathion-methyl (parathion) -methyl), permethrin, phenthoate, phothom, phorate, phosalone, phosmet, phosphamidon, pirimicarb b), pirimiphos-methyl, profenofos, protrifenbute, pyrometrozine, pyraclofos, pyriproxyfen, rotenone, sulprofos ), Silafluofen, spinosad, sulfopep, tebfenozide, teflubenzuron, tefluthorin, terbufos, tetrachlorvinphos, iacloprid, iacloprid Thiocyclam, thiodicarb, thiamethoxam, thiofanox, thiometon, tolfenpyrad, tralomethrin, trichlorphone (Trichlorfon), triazuron, triflumuron, vamidionion and the like.

  These agrochemical active ingredients can be used alone or in admixture of two or more. In addition to the compound A, when other sterilizing active ingredients, insecticidal active ingredients, etc. are mixed, the total weight of the pesticidal active ingredient is usually in the range of 0.1 to 20% by weight with respect to the total weight of the composition. .

  The content of polyhydric alcohol, epoxidized vegetable oil, glycidyl ether, and isopropyl phosphate in the composition of the present invention is usually 0.05 to 10% by weight, preferably 0.1 to 5% by weight based on the total weight of the composition. %.

  In the present invention, the polyhydric alcohol is an alcohol obtained by replacing a plurality of hydrocarbon hydrogens with a hydroxyl group, and examples thereof include alkylene glycol, polyalkylene glycol, and glycerin. Diethylene glycol or glycerin is preferable.

  In the present invention, the epoxidized vegetable oil is a compound obtained by epoxidizing an unsaturated bond portion of a fatty acid of a vegetable oil, and examples thereof include epoxidized soybean oil (ESO) and epoxidized linseed oil (ELO).

  In the present invention, the glycidyl ether is one in which one or more 2,3-epoxypropanols are ether-bonded to the hydroxyl group of a monohydric or polyhydric alcohol, and there are monoglycidyl ether and polyglycidyl ether depending on the raw material alcohol. For example, “Epiol” (trade name) series manufactured by Nippon Oil & Fats Co., Ltd. can be mentioned.

  In the present invention, isopropyl phosphate is mono- and diisopropyl phosphate known as a fluidity improver.

  The composition of the present invention can further contain a filler. As the extender, a crushed product obtained by pulverizing and sieving natural minerals such as clay, bentonite, attapulgite, zeolite, pumice, limestone and silica stone is preferable. For example, quartz, calcite, gypsum, dolomite, chalk, kaolinite, pyrophyllite, sericite, halosite, metahalosite, kibushi clay, glazed clay, porcelain stone, wax stone, sikhlite, allophane, shirasu, Kira, talc, bentonite, activated clay, acid clay, pumice, attapulgite, zeolite and diatomaceous earth and other minerals such as calcined clay, perlite, shirasu balloon, vermiculite, attapulgous clay and calcined diatomaceous earth For example, inorganic salts such as magnesium carbonate, calcium carbonate, sodium carbonate, sodium bicarbonate, sodium sulfate, ammonium sulfate and potassium chloride, such as sugars such as glucose, sugar or lactose, microcrystalline cellulose, wood flour, rice bran, bran or rice husk powder Coffee beans powder Cellulose powder, organic licorice powder and the like, for example, starch and its derivatives, powdered cellulose, polysaccharides such as carboxymethyl cellulose, fly ash, white carbon and urea, and the like. These extenders may be used alone or in combination of two or more. The content in the composition of the present invention is usually in the range of 60 to 99.5% by weight.

  The above-mentioned natural minerals, particularly clay, used as a bulking agent have the property of promoting the decomposition of Compound A. Even when such a natural mineral is contained, the composition of the present invention and the method of the present invention have a good decomposition-suppressing effect. Play.

  In the composition of the present invention, when there are relatively many liquid components such as polyhydric alcohol, epoxidized vegetable oil, glycidyl ether, isopropyl phosphate, a solvent, a flocculant, and a fluidity improver described later, In general, when the total weight of the liquid components is about 1% by weight or more based on the total weight of the composition, it is preferable to add an oil absorbing agent.

  The oil absorbing agent is not particularly limited as long as it is usually used for agricultural chemicals, and examples thereof include white carbon, foamed perlite, and diatomaceous earth. The addition amount is usually in the range of 50 to 100 parts by weight with respect to 100 parts by weight of the total weight of the liquid components.

  The composition of the present invention may further contain a solvent, a flocculant, a fluidity improver, a stabilizer, a colorant, and the like, if necessary.

  Examples of the solvent include aromatic hydrocarbons such as phenylxylylethane, methylnaphthalene, and alkylbenzene, esters such as dialkyl adipate and dialkyl phthalate, ketones, vegetable oil, mineral oil, and room temperature having an average molecular weight of about 200 to 600. And glycol ethers such as polyethylene glycol, polypropylene glycol, N-methylpyrrolidone, polypropylene glycol methyl ether, and acetates thereof which are liquid. The addition amount is usually in the range of 0.1 to 10% by weight.

  Examples of the flocculant include Doreres A (trade name, manufactured by Sankyo Corporation), Doreles B (trade name, manufactured by Sankyo Corporation), liquid paraffin, and the like. The amount added is usually in the range of 0.5 to 2% by weight.

  Examples of the fluidity improver include isopropyl phosphate (PAP) and the like, and the addition amount is usually in the range of 0.1 to 1% by weight.

  Examples of the stabilizer include UV absorbers and antioxidants, and the amount added is usually in the range of 0.01 to 5% by weight.

  Examples of the colorant include pigments, and the amount added is usually in the range of 0.01 to 0.5%.

  When the composition of the present invention is a powder, it is produced, for example, as follows. After compound A and other pesticidal active ingredients are mixed, or a mixture of a small amount of a carrier such as silica, etc., the mixture is pulverized with a jet mizer, pin mill, hammer mill, centrifugal pulverizer, etc. Add the carrier and other components as necessary, and mix with a ribbon mixer, Henschel mixer, Roedige mixer, Nauta mixer, blender, etc., and if necessary, use a Nara-type pulverizer, etc. The composition of the present invention is produced by mixing.

  In the case where the composition of the present invention is a powder, for example, it is mixed with the soil in the field (soil mixing treatment), sprayed on the plant stock (stock spraying treatment), or dressed on the seeds of the crop (seed treatment) Used by. The amount of the composition of the present invention used is usually 1 to 500 g as the amount of Compound A per 10 ares when used in soil admixing treatment and stock spraying treatment, and 1 kg of seeds when used in seed treatment. The amount of compound A per unit is usually 0.5 to 100 g.

[Example 1]
Carplex 80-D (manufactured by Degussa) 2.00 parts by weight and glycerin RG (trade name, glycerin, manufactured by NOF Corporation) were weighed and mixed. Subsequently, Miyaki DL clay (trade name, clay, manufactured by Sanyo Kikou Kogyo Co., Ltd.) 10.00 parts by weight, Compound A jet pulverized product (98.8%, average particle size 1.9 μm) 0.56 parts by weight Was added and mixed. Further, after mixing 86.44 parts by weight of Miyaki DL clay, the whole amount was pulverized and mixed with a rotor speed mill P-14 type (manufactured by Fritsch Japan Co., Ltd.) to obtain a powder containing 0.5% of compound A. .

[Example 2]
Carplex 80-D 2.00 parts by weight and glycerol RG 2.00 parts by weight were weighed and mixed. Subsequently, 10.00 parts by weight of Miyaki DL clay and 0.56 parts by weight of Compound A jet pulverized product (98.8%, average particle size 1.9 μm) were added and mixed. Further, after mixing 85.44 parts by weight of Miyaki DL clay, the whole amount was pulverized and mixed in a rotor speed mill P-14 type to obtain a powder containing 0.5% of Compound A.

Example 3
Carplex 80-D 2.00 parts by weight and glycerin RG 3.00 parts by weight were weighed and mixed. Subsequently, 10.00 parts by weight of Miyaki DL clay and 0.56 parts by weight of Compound A jet pulverized product (98.8%, average particle size 1.9 μm) were added and mixed. Furthermore, after mixing 84.44 parts by weight of Miyaki DL clay, the whole amount was pulverized and mixed in a rotor speed mill P-14 type to obtain a powder containing 0.5% of Compound A.

Example 4
A powder containing 0.5% of Compound A was obtained according to Example 1, except that glycerin RG was replaced with Neusizer 510R (trade name, epoxidized soybean oil, manufactured by Nippon Oil & Fats Co., Ltd.).

Example 5
A powder containing 0.5% of Compound A was obtained according to Example 1 except that glycerin RG was replaced with Epiol G-100 (trade name, glycidyl ether, manufactured by Nippon Oil & Fats Co., Ltd.).

Example 6
A powder containing 0.5% of Compound A was obtained according to Example 1 except that glycerin RG was replaced with Epiol EH (trade name, glycidyl ether, manufactured by Nippon Oil & Fats Co., Ltd.).

Example 7
A powder containing 0.5% of Compound A was obtained in accordance with Example 1 except that glycerin RG was replaced with Dixzol 600 (trade name, isopropyl phosphate ester (PAP), manufactured by Daiichi Kogyo Seiyaku).

Example 8
A powder containing 0.5% of Compound A was obtained according to Example 1 except that glycerin RG was replaced with Doreles B (trade name, manufactured by Sankyo Co., Ltd.).

Example 9
A powder containing 0.5% of Compound A was obtained according to Example 1 except that glycerin RG was replaced with diethylene glycol.

[Comparative Example]
Miyaki DL clay (manufactured by Sanyo Kikou Co., Ltd.) 13.00 parts by weight and Compound A jet pulverized product (98.8%, average particle size 1.9 μm) 0.56 parts by weight were added and mixed. Furthermore, after mixing 86.44 parts by weight of Miyaki DL clay, the whole amount was pulverized and mixed in a rotor speed mill P-14 type (manufactured by Fritsch Japan Co., Ltd.) to obtain a powder containing 0.5% of compound A. .

〔Test method〕
The powders produced in Examples 1 to 9 and Comparative Example were severely stored at 50 ° C. for 10 days or 1 month, and then the content of Compound A in the powder was measured by high performance liquid chromatography to decompose Compound A. The rate (%) was calculated by the following formula.
Decomposition rate (%) of compound A = (initial content−content after severe storage) / initial content × 100
In addition, the content of Compound A in the powder stored at 0 ° C. was measured at the time of measuring the content of Compound A in the severely stored powder, and the value was used as the initial content of Compound A. The results are shown in Table 1.

Table 1
――――――――――――――――――――――――――
Decomposition rate of Compound A (%)
――――――――――――――――――――――――――
50 ℃ 10 days 50 ℃ 1 month ――――――――――――――――――――――――――
Example 1 3.2-
Example 2 1.5-
Example 3 1.9 −
Example 4 2.0-
Example 5 2.0 −
Example 6 3.2-
Example 75.0-
Example 85.0-
Example 9-3.1
Comparative Example 9.5-
――――――――――――――――――――――――――

  According to the present invention, decomposition of the pesticidal active ingredient can be suppressed and storage stability can be improved.

Claims (2)

(A) glycerol as an adjuvant, epoxidized vegetable oil, and a monovalent or one or more hydroxyl groups in 2,3-epoxy propanol polyhydric alcohol is selected from one or more ether linked Gurishijiruete Le or Ranaru group, and ( b) Contains 3- (3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1H-1,2,4-triazole-1-sulfonamide as an agrochemical active ingredient A plant disease control composition comprising: (A) glycerol as an adjuvant, epoxidized vegetable oil, and a monovalent or one or more hydroxyl groups in 2,3-epoxy propanol polyhydric alcohol is selected from one or more ether linked Gurishijiruete Le or Ranaru group, and ( b) Combination of 3- (3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1H-1,2,4-triazole-1-sulfonamide as an agrochemical active ingredient A method for preventing degradation of the pesticidal active ingredient.