JP7173432B2 - Aqueous suspension herbicidal composition with improved storage stability - Google Patents

Description

The present invention relates to an aqueous suspension herbicidal composition with improved storage stability.

Sulfonylurea-based herbicidal active ingredients are highly hydrolyzable and may be decomposed during storage in suspension formulations containing water. As a method of suppressing and stabilizing the decomposition, a method of adding an organic solvent is used. It is known (Patent Document 1). Moreover, as a method for suppressing the decomposition of metazosulfuron in solid preparations, a method of adding sugar is known (Patent Document 2).

Patent No. 4189612 JP 2017-137277 A

The present inventors have found that metazosulfuron is significantly degraded in water-containing suspension formulations when the organic solvent used in Patent Document 1 is added.

As a result of extensive research, the present inventors have found that the addition of a specific fatty acid ester suppresses the decomposition of metazosulfuron in the composition, and completed the present invention.

That is, the present invention relates to the following.
[1]
An aqueous suspension herbicidal composition comprising (a) metazosulfuron and (b) a fatty acid ester having a fatty acid portion having 15 to 22 carbon atoms and an alcohol portion having 2 to 6 carbon atoms.
[2]
The aqueous suspension herbicidal composition according to [1], wherein the fatty acid moiety in the fatty acid ester has 15 to 20 carbon atoms.
[3]
The aqueous suspension herbicidal composition according to [1], wherein the fatty acid moiety in the fatty acid ester has 18 carbon atoms.
[4]
The aqueous suspension herbicidal composition according to any one of [1] to [3], wherein the alcohol moiety in the fatty acid ester has 2 to 4 carbon atoms.
[5]
The aqueous suspension herbicidal composition according to any one of [1] to [4], wherein the fatty acid ester is isobutyl oleate.
[6]
The aqueous suspension herbicidal composition according to any one of [1] to [5], further comprising (c) halosulfuron-methyl.
[7]
The aqueous suspension herbicidal composition according to any one of [1] to [6], which is used after being diluted with water.
[8]
The aqueous suspension herbicidal composition according to any one of [1] to [7], which is a suspoemulsion composition.
[9]
The method for applying the aqueous suspension herbicidal composition according to any one of [1] to [8], which is diluted with water for foliar spraying of paddy field weeds.

The composition of the present invention inhibits the decomposition of metazosulfuron.

In the present invention, "tert-" means tertiary.

The fatty acid ester used in the present invention is a compound in which the carboxyl group of a fatty acid is ester-bonded to an alcohol, and is preferably liquid at room temperature. The fatty acid ester used in the present invention is a fatty acid ester in which the fatty acid portion has 15 to 22 carbon atoms and the alcohol portion has 2 to 6 carbon atoms, more preferably the fatty acid portion has 15 to 6 carbon atoms. 20 and the alcohol moiety has 2 to 4 carbon atoms, more preferably the fatty acid moiety has 18 carbon atoms and the alcohol moiety has 4 carbon atoms, and particularly preferably. is isobutyl oleate. These fatty acid esters can be used alone or in admixture of two or more, and the ratio in the case of admixture can also be freely selected.

As used herein, the fatty acid portion of a fatty acid ester means a saturated or unsaturated fatty acid. Specific examples of saturated or unsaturated fatty acids having 15 to 22 carbon atoms include pentadecylic acid, palmitic acid, stearic acid, oleic acid, vaccenic acid, linoleic acid, linolenic acid, arachidic acid, eicosadienoic acid, and behenic acid. mentioned. Specific examples of fatty acids having 18 carbon atoms include stearic acid, oleic acid, vaccenic acid, linoleic acid and linolenic acid.

Specific examples of alcohols having 2 to 6 carbon atoms in fatty acid esters include ethanol, propanol, isopropanol, butanol, 2-butanol, isobutyl alcohol, tert-butyl alcohol, pentanol, and hexanol. Specific examples of alcohols having 4 carbon atoms in fatty acid esters include butanol, 2-butanol, isobutyl alcohol and tert-butyl alcohol.

The content of the fatty acid ester in the composition of the present invention can be appropriately selected, and is in the range of 0.1 to 40 parts by mass, more preferably in the range of 1 to 30 parts by mass, based on 100 parts by mass of the composition of the present invention. and more preferably 5 to 20 parts by mass.

In addition to metazosulfuron and halosulfuron-methyl, the present invention can further include agrochemical active ingredients, the common names of which are exemplified below.

Herbicides: 4-CPA (4-CPA), 4-CPA-salts, 4-CPB (4-CPB), 4-CPP (4-CPP), 2,4-D(2 ,4-D, 2,4-PA), 2,4-D salts (2,4-D-salts), 2,4-D esters (2,4-D-esters), 3,4- DA (3,4-DA), 2,4-DB (2,4-DB), salts of 2,4-DB (2,4-DB-salts), esters of 2,4-DB (2,4 -DB-esters), 3,4-DB (3,4-DB), 2,4-DEB (2,4-DEB), 2,4-DEP (2,4-DEP), 3,4-DP (3,4-DP), 2,4,5-T (2,4,5-T), 2,4,5-T salts (2,4,5-T-salts), 2,4, 5-T esters (2,4,5-T-esters), 2,4,5-TB (2,4,5-T), 2,3,6-TBA (2,3,6-TBA, TCBA), 2,3,6-TBA-salts, acetochlor, acifluorfen, acifluorfen-methyl, acifluorfen sodium (acifluorfen-sodium), aclonifen, acrolein, alachlor, allidochlor (CDAA), alloxydim, alloxydim-sodium, allyl alchol , alorac, ametridione, ametryn, amibuzin, amicarbazone, amidochlor, amidosulfuron, aminocyclopyrachlor, aminocyclopyrachlor aminocyclopyrachlor-methyl, aminocyclopyrachlor-potassium, aminopyralid, aminopyralid-salts, amiprofos (a miprophos, amiprophos-methyl, amitrole, aminotriazole, ATA, ammonium sulfamate (AMS), anilofos, anisuron, aslam, ashram salts (asulam-salts), atraton, atrazine, azafenidin, azimsulfuron, aziprotryne, azyprotrin, barban, CBN, BCPC, beflubutamid ), benazolin, benazolin-ethyl, benazolin-salts, bencarbazone, benfluralin, benefin, benfuresate, bensulfuron, bensulfuron-methyl ( bensulfuron-methyl), bensulide (SAP), bentazon, bentazone, bentazone-sodium, bentranil, benzadox, benzadox-ammonium, benzfendi benzfendizone, benzipram, benzobicyclon, benzofenap, benzofluor, benzoylprop, benzoylprop-ethyl, benzthiazuron, bicyclo bicyclopyrone, bifenox, bilanafos, bialaphos, bilanafos-sodium, binapacryl, bispyri bac), bispyribac-sodium, bixlozone borax, bromacil, bromacil-salts, bromobonil, bromobutide, bromophenoxime ( bromofenoxim, bromopyrazon, bromoxynil, bromoxynil-potassium, bromoxynil-esters, butachlor, butafenacil, butamifos, butenachlor ), butralin, butraline, butidazole, buthiuron, butroxydim, buturon, butylate, caffenstrole, calcium cyanamide, cambendichlor ( cambendichlor, calcium chlorate, carbasulam, carbetamide, carboxazole, carfentrazone, carfentrazone-ethyl, CDEA ), CEPC, chlomethoxyfen, chlomethoxynil, chloramben, chloramben-salts, chloramben-methyl, chloramben-methylammonium , chloranocryl, dicryl, chlorazifop, chlorazifop-propargyl, chlorazine, chlorbromuron ron), chlorbufam (BIPC), chloreturon, chlorfenac, fenac, chlorfenac-salts, chlorfenprop, chlorfenprop-methyl ), chlorflurazole, chlorflurenol, chlorflurenol-methyl, chloridazon, PAC, pyrazon, chlorimuron, chlorimuron-ethyl, chlornidine, chlornitrofen (CNP), chloroacetic acid, monochloroacetic acid, sodium chloroacetate (SMA), chlorotoluron, chloroxuron, chloroxynil, chlorprocarb chlorprocarb, chlorphtalim, chlorpropham (IPC), chlorsulfuron, chlorthal (TCTP), chlorthal-esters, chlorthiamid (DCBN), sinidone-ethyl ( cinidon-ethyl, cinmethylin, cinosulfuron, cisanilide, clacyfos, clethodim, cliodinate, clodinafop, clodinafop-propargyl, clofop, clofop-isobutyl, clomazone, clomeprop, cloprop , cloproxydim, clopyralid, clopyralid-methyl, clopyralid-salts, cloransulam, cloransulam-methyl, copper sulfate (divalent ) (copper sulfate), CPMF (CPMF), CPPC (CPPC), credazine, cresol, cumyluron, cyanatryn, cyanamide, cyanazine, cycloate , cyclopyranil, cyclopyrimorate, cyclosulfamuron, cyclooxydim, cycluron (COMU), cyhalofop, cyhalofop-butyl, cyperquat cyperquat, cyperquat-chloride, cyprazine, cyprazole, cypromid, daimuron, dymron, dalapon, dalapon-salts, dazomet, dazomet-sodium, delachlor, desmedipham, desmetryn, di-allate, dicamba, MDBA, dicamba- salts), dicamba-esters, dichlobenil (DBN), dichloraurea (DCU), dichlormate, o-dichlorobenzene (DCB), dichlorprop, dichlorprop. Salts of chlorprop (dichlorprop-salts), esters of dichlorprop (dic dichlorprop-P, dichlorprop-P-salts, dichlorprop-P-esters, diclofop, diclofop diclofop-methyl, diclofop-P, diclofop-P-methyl, diclosulam, diethamquat, diethamquat dichloride, diethatyl, diethyl-ethyl, difenopenten, difenopenten-ethyl, difenoxuron, difenzoquat, difenzoquat methylsulfate, diflufenican ( diflufenican, diflufenzopyr, diflufenzopyr-sodium, dimefuron, dimepiperate, dimethachlor, dimethametryn, dimethenamid, dimethenamid P ( dimethenamid-p), dimexano, dimidazon, dimethyl disulfide, dinitramine, dinofenate, dinoprop, dinosam, dinoseb (DNBP), dinoseb dinoteb-salts, dinoteb-esters, dinoterb, dinoterb-salts, dinoterb-esters, diphenamid, dipropalin, Dipropethrin ( dipropetryn, diquqt, diquqt dibromide, disul, 2,4-PS, disul-sodium, dithiopyr, diuron, DCMU, DMPA ( DMPA), DNOC (DNOC), DNOC-salts, EBEP (EBEP), eglinazine, eglinazine-ethyl, endothal, endothal-salts salts), epronaz, EPTC (EPTC), erbon, esprocarb, ethachlor, ethalfluralin, ethametsulfuron, ethametsulfuron-methyl ), ethaprochlor, ethidimuron, ethiolate, ethiozin, ethofumesate, ethoxyfen, ethoxyfen-ethyl, ethoxysulfuron , etinofen, etnipromid, etobenzanid, EXD, fenasulam, fenoprop, 2,4,5-TP, silvex, fenoprop-salts ), fenoprop-esters, fenoxaprop, fenoxaprop-ethyl, fenoxaprop-p, fenoxaprop-p-ethyl ), fenoxasulfone, fenquinotrione, fenteracol, fenthiaprop, fenthia prop-ethyl (fenthiaprop-ethy)
l), fentrazamide, ferrous sulfate, fenuron, fenuron-TCA, flamprop, flamprop-esters, flamprop M (flamprop-M), flamprop-M-esters, flazasulfuron, florasulam, florpyrauxifen, florpyrauxifen-benzyl , fluazifop, fluazifop-esters, fluazifop-P, fluazifop-p-esters, fluazolate, flucarbazone, flucarbazone sodium ( flucarbazone-sodium, flucetosulfuron, fluchloralin, flufenacet, flufenican, flufenpyr, flufenpyr-ethyl, flumetsulam, flumedine flumezin, flumiclorac, flumiclorac-pentyl, flumioxazin, flumipropyn, fluometuron, fluorodifen, fluoroglycofen , fluoroglycofen-ethyl, fluoromidine, fluoronitrofen (CFNP), fluothiuron, flupoxam, flupropacil, flupropanate, te trapion), flupropanate-sodium, flupyrsulfuron, flupyrsulfuron-methyl, flupyrsulfuron-sodium, flupyrsulfuron-methyl-sodium sodium), fluridone, flurochloridone, fluroxypyr, fluroxypyr-esters, flurtamone, fluthiacet, fluthiacet-methyl, fomesafen (fomesafen), fomesafen-sodium, foramsulfuron, fosamine, fosamine-ammonium, furyloxyfen, glufosinate, salts of glufosinate (glufosinate-salts), glufosinate-P, glufosinate-P-salts, glyphosate, glyphosate-salts, halauxifen, haluxifen halauxifen-methyl, halosafen, halosulfuron, haloxydine, haloxyfop, haloxyfop-sodium, haloxyfop-esters, haloxyfop P ( haloxyfop-P), haloxyfop-p-esters, herbimycin, hexachloroacetone (HCA), hexazinone, imazamethabenz, imazamethabenz-methyl, imazamox, imazamox-ammonium, imazapic, imazapic-ammonium, imazapyr, imazapyr isopropylammonium (imazapyr-isopropylammonium), imazaquin, imazaquin-methyl, imazaquin-salts, imazethapyr, imazethapyr-ammonium, imazosulfuron, indanofan ), indaziflam, iodobonil, iodosulfuron, iodosulfuron-sodium, iodosulfuron-methyl, iodosulfuron-methyl-sodium ), iofensulfuron, iofensulfuron-sodium, ioxynil, ioxynil-salts, ioxynil-esters, ipazine, ipfencarb ipfencarbazone, iprymidam, isocarbamid, isocil, isoprocil, isomethiozin, isonoruron, isopolinate, isopropalin, isoproturon , isouron, isoxaben, isoxachlortole, isoxaflutole, isoxapyrifop, karbutyrate ilate), ketospiradox, ketospiradox-potassium, lactofen, lancotrione, lancotrione-sodium, lenacil, linuron, MCPA, MCPA-salts, MCPA-esters, MCPB, MCPB-salts, MCPB-esters, mecoprop , MCPP), mecoprop-salts, mecoprop-esters, mecoprop-P, mecoprop-P-salts, mecoprop-P -esters, medinoterb, medinoterb actate, mefenacet, mefluidide, mefluidide-salts, mesoprazine, mesosulfuron, mesosulfuron-methyl (mesosulfuron-methyl), mesotrione, metam, carbam, metam-salts, metamifop, metamitron, metazachlor, metflurazon, methabenz methabenzthiazuron, methibenzuron, methalpropalin, methazole, methiobencarb, methiuron, metometon, metoprotryne, methoprotryn, methoxyphenone, methiopyrisulfuron, meth methiozolin, methyl azide, methyl bromide, methyl dymron, methyl iodide, methyl isothiocyanate, metobenzuron, metobromuron ( metobromuron, metolachlor, S-metolachlor, metosulam, metoxuron, metribuzin, metsulfuron, metsulfuron-methyl, molinate ), monalide, monisouron, monolinuron, monosulfuron, monosulfuron-methyl, monuron (CMU), monuron-TCA, morphamcort ( morfamquat, morphamquat dichloride, naproanilide, napropamide, napropamide-M, naptalam (NPA), naptalam-sodium, neburon , nicosulfuron, nipyraclofen, nitralin, nitrofen, NIP, niclofen, nitrofluorfen, norflurazon, noruron, norea, OCH (OCH), oleic acid, orbencarb, orthosulfamuron, oryzalin, oxadiargyl, oxadiazon, oxapyrazo n), oxapyrazon-salts, oxasulfuron, oxaziclomefone, oxyfluorfen, parafluron, paraquat, paraquat dichloride, paraquat dimethylsulfur Fate (paraquat dimetilsulfate), pebulate, pelargonic acid, nonanoic acid, pendimethalin, penoxsulam, pentachlorophenol, sodium pentachlorophenoxide, pentachlorophenol chlorophenol laurate, pentanochlor, solan, CMMP, pentoxazone, perfluidone, pethoxamid, phenisopham, phenmedipham, phenmedipham phenmedipham-ethyl, phenobenzuron, picloram, picloram-salts, picloram-esters, picolinafen, pinoxaden, piperophos ), potassium azide, potassium cyanate, pretilachlor, primisulfuron, primisulfuron-methyl, procyazine, prodiamine , profluazol, profluralin, profoxydim, proglinadine (pro glinazine), proglinazine-ethyl, prometon, prometryn, prometryne, propachlor, propanil (DCPA), propaquizafop, propazine, propham, propisochlor, propoxycarbazone, propoxycarbazone-sodium, propyrisulfuron, propyzamide, pronamide, prosulfalin, prosulfocarb, prosulfuron, proxan (IPX), proxan-sodium, prynachlor, pydanon, pyraclonil, pyraflufen, pyraflufen-ethyl, pyrasulfotole, pyrazolynate, pyrazolate, pyrazosulfuron, pyrazosulfuron-ethyl, pyrazoxyfen, pyribambenz -isopropyl), pyribambenz-propyl, pyribenzoxim, pyributicarb, pyriclor, pyridafol, pyridate, pyriftalid, pyriminobac, pyriminobac pyriminobac-methyl, pyrimisulfan, pyrithiobac, pyrithiobac-sodium , pyroxasulfone, pyroxsulam, quinclorac, quinclorac-dimethylammonium, quinclorac-methyl, quinmerac, quinoclamine (ACN) , quinonamid, quizalofop, quizalofop-esters, quizalofop-P, quizalofop-P-esters, rhodethanil, rimsulfuron , saflufenacil, sebuthylazine, secbumeton, sethoxydim, siduron, simazine, CAT, simeton, simetryn, simetryne, sodium azide azide), sodium chlorate, sulcotrione, sulfallate (CDEC), sulfentrazone, sulfometuron, sulfometuron-methyl, sulfosulfuron (sulfosulfuron), sulfuric acid, sulglycapin, swep (swep, MCC), tavron, TCA (TCA, trichloroacetic acid), TCA-salts, TCA-ethadyl ), tebutam, butam, tebuthiuron, tefuryltrione, tembotrione, tepraloxydim, terbacil, terbucarb, terbutol, MPMC), terbuchlor, terbumeton, terbuthylazine, terbutryn, tetrafluron, thenylchlor, thiazafluron, thiazopyr, thidiazimin, thidiazuron (thidiazuron), thiencarbazone, thiencarbazone-methyl, thifensulfuron, thifensulfuron-methyl, thiobencarb, benthiocarb, tiafenacil, thiocarbadil ( tiocarbazil, tioclorim, tolpyralate, topramezone, tralkoxydim, triafamone, triallate, tri-allate, triasulfuron, triaziflam, tribenuron, tribenuron-methyl, tricamba, triclopyr, triclopyr-salts, triclopyr-esters, tridiphane , trietazine, trifloxysulfuron, trifloxysulfuron-sodium, trifludimoxadin, trifluralin, triflusulfuron, triflusulfuron-methyl ( triflusulfuron-methyl), trifop, trifop-methyl, trifopsime, trihydroxytriazine, cyanuric acid, trimeturon, tripropindan, tritac, tritosulfuron, vernolate, xylachlor, 6-{( difluoromethyl)thio}-N2,N4-diisopropyl-1,3,5-triazine-2,4-diamine (CAS 103427-73-2), (R)-2-[{7-(2-chloro-4 Methyl -(trifluoromethyl)phenoxy)naphthalen-2-yl}oxy]propanoate (CAS 103055-25-0), propan-2-one O-(12H-dibenzo[d,g][1,3]dioxocine -6-carbonyl)oxime (CAS 503819-68-9), [{(2-(N-methylmethylsulfonamido)-2-oxoethyl)amino}methyl]phosphonic acid (CAS 98565-18-5), 2- [{2-(4-((6-chloroquinoxalin-2-yl)oxy)phenoxy)propanoyl}oxy]-ethyl-3-methyl-3-butenoate (CAS 1191932-79-2), O-(2, 4-dimethyl-6-nitrophenyl)O-methylisopropyl phosphoramidothioate (CAS 189517-75-7), 5-[N-{(4,6-dimethylpyrimidin-2-yl)carbamoyl}sulfamoyl]-1 Methyl -(pyridin-2-yl)-1H-pyrazole-4-carboxylate (CAS 104770-29-8), 4-[2-chloro-3-{(3,5-dimethyl-1H-pyrazole-1- yl)methyl}-4-(methylsulfonyl)benzoyl]-1,3-dimethyl-1H-pyrazol-5-yl 1,3-dimethyl-1H-pyrazole-4-carboxylate (CAS 1911613-97-2), 4-[2-chloro-4-(methylsulfonyl)-3-{(2,2,2-trifluoroethoxy)methyl}benzoyl]-1-ethyl-1H-pyrazol-5-yl 1,3-dimethyl- 1H-pyrazole-4-carboxylate (CAS 1992017-55-6), 1-{2-chloro-3-(3-cyclopropyl-5-hydroxy-1-methyl-1H-pyrazole-4-carbonyl)-6 - (trifluoromethyl)phenyl Nyl}piperidin-2-one (CAS 1855929-45-1), 1,3-dimethyl-4-{2-(methylsulfonyl)-4-(trifluoromethyl)benzoyl}-1H-pyrazol-5-yl 1 , 3-dimethyl-1H-pyrazole-4-carboxylate (CAS 1622908-18-2), 2-[{3-(2-chloro-4-fluoro-5-(3-methyl-2,6-dioxo- 4-(Trifluoromethyl)-3,6-dihydropyrimidin-1(2H)-yl)phenoxy)pyridin-2-yl}oxy]ethyl acetate (CAS 353292-31-6), 2-methyl-N-( 5-methyl-1,3,4-oxadiazol-2-yl)-3-(methylsulfonyl)-4-(trifluoromethyl)benzamide (CAS 1400904-50-8), 2-chloro-N-( 1-methyl-1H-tetrazol-5-yl)-3-(methylthio)-4-(trifluoromethyl)benzamide (CAS 1361139-71-0), 2-chloro-N-(1-methyl-1H-tetrazole -5-yl)-3-(methylsulfonyl)-4-(trifluoromethyl)benzamide (CAS 1361139-73-2), 4-(4-fluorophenyl)-6-(2-hydroxy-6-oxo- 1-cyclohexene-1-carbonyl)-2-methyl-1,2,4-triazine-3,5(2H,4H)-dione (CAS 1353870-34-4), F4050 (test name), F9960 (test name ), OK-701 (test name) and SL-1201 (test name).

Fungicides: acibenzolar-S-methyl, acypetacs, aldimorph, allyl alcohol, ametoctradin, aminopyrifen, amisulbrom, amobam, ampropylfos, anilazine, azaconazole, azithiram, azoxystrobin, barium polysulfide, benalaxyl, benalaxyl-M (benalaxyl-M), benodanil, benomyl, benquinox, bentaluron, benthiavalicarb-isopropyl, benthiazole, benzamacril, benzamorf, benzovindiflupyr, binapacryl, biphenyl, bitertanol, bixafen, blasticidin-S, bordeaux mixture, boscalid, bromconazole, bupirimate, buthiobate, butylamine, calcium polysulfide, captafol, captan, carbamorph ( carbamorph, carbendazim, carboxin, carpropamid, carvone, cheshunt mixture, chinomethionat, clobenzazone hiazone), chloraniformmethane, chloranil, chlorfenazole, chloroneb, chloropicrin, chlorothalonil, chlorquinox, clozolinate, climbazole, copper acetate, copper carbonate, basic, copper hydroxide, copper naphthenate, copper oleate, copper oxychloride, copper sulfate, copper sulfate, basic, copper zinc chromate, coumoxystrobin, cresol, cufraneb, cuprobam, cyazofamid, cyclafuramid, cycloheximide, cyflufenamid, cymoxanil, cypendazole, cyproconazole, cyprodinil ), cyprofuram, dazomet, debacarb, decafentin, dehydroacetic acid, dichlobentiazox, dichlofluanid, dichlone ), dichlorophen, dichlozoline, diclobutrazol, diclocymet, diclomezine, dicloran, diethofe diethofencarb, difenoconazole, diflumetorim, dimethirimol, dimethomorph, dimoxystrobin, diniconazole, diniconazole-M, dinobuton ), dinocap, dinocap-4, dinocap-6, dinoctone, dinosulfon, dinoterbone, diphenylamine, dipymetitrone , dipyrithione, disulfiram, ditalimfos, dithianon, DNOC, dodemorph, dodine, drazoxolon, edifenphos, enestrobin, enoxastrobin, epoxiconazole, ethaboxam, etaconazole, etem, ethirimol, ethoxyquin, etridiazole, famoxadone (famoxadone), fenamidone, fenaminosulf, fenaminstrobin, fenapanil, fenarimol, fenbuconazole, fenfuram, fenhexamid, fenitropan, fenoxanil, fenpiclonil, fenpicoxamid, fenpropidin, fenpropimorph ( fenpropimorph, fenpyrazamine, fentin, ferbam, ferimzone, florylpicoxamid, fluazinam, fludioxonil, flufenoxystrobin, fluindapyr, flumetover, flumorph, fluopicolide, fluopimomide, fluopyram, fluoroimide, fluotrimazole, fluoxastrobin, fluquinconazole, flusilazole, flusulfamide, flutolanil, flutianil, flutriafol, fluxapyroxad, folpet, fosetyl- fosetyl-aluminium, fthalide, fuberidazole, furalaxyl, furametpyr, furcarbanil, fluconazole, fluconazole-cis, flumeciclox ( furmecyclox, furophanate, glyodin, griseofulvin, guazatine, halacrinate, hexachlorobenzene, hexaconazole, hexylthiofos, oxysulfate quinoline (8-hydroxyquinoline sulfate), hymexazol, imazalil, imibenconazole (imib iminoctadine-albesilate, iminoctadine-triacetate, inpyrfluxam, iodocarb, ipconazole, ipfentrifluconazole, ipfentrifluconazole Flufenoquin, iprobenfos, iprodione, iprovalicarb, isofetamid, isoflurcipram, isotianil, isoprothiolane, isopyrazam, isovaredione isovaledione, kasugamycin, kresoxim-methyl, laminarin, mancopper, mancozeb, mandestrobin, mandipropamid, maneb , mebenil, mecarbinzid, mefentrifluconazole, mepanipyrim, mepronil, meptyldinocap, metalaxyl, metalaxyl-M M), metam, metazoxolon, metconazole, methasulfocarb, methfuroxam, methyltetraprole, metiram, metominostrobin, metrafenone (metrafenone), metsulfovax, milneb, myclobutanil, myclozolin, narvum (nabam), naftifine, natamycin, nickel bis (dimethyldithiocarbamate), nitrostyrene, nitrothal-isopropyl, nuarimol, octhilinone, ofurace, orysastrobin, oxadixyl, oxathiapiprolin, oxine copper, oxpoconazole fumarate, oxycarboxin , pefurazoate, penconazole, pencycuron, penflufen, pentachlorophenol, penthiopyrad, 2-phenylphenol, phosdiphen, phthalide ), picarbutrazox, picoxystrobin, piperalin, polycarbamate, polyoxins, polyoxorim, potassium azide, hydrogen carbonate Potassium hydrogen carbonate, probenazole, prochloraz, procymidone, propamocarb hydrochloride, propiconazole, propineb, proquinazid, prothiocarb ), pyrazophos, pyribencarb, pyrifenox, pyrimethanil il), pyriminostrobin, pyroquilon, prothiocarb, prothioconazole, pydiflumetofen, pyracarbolid, pyraclostrobin, pyrametost pyrametostrobin, pyraoxystrobin, pyrapropoyne, pyraziflumid, pyridaclomethyl, pyridinitril, pyriofenone, pyrisoxazole, pyroxychlor, pyroxyfur, quinacetol-sulfate, quinazamid, quinconazole, quinoxyfen, quinofumelin, quintozene, rabenzazole, salicylanilide , sedaxane, silthiofam, simeconazole, sodium hydrogen carbonate, sodium hypochlorite, spiroxamine, sulfur, tebuconazole, tebufloquin, tecloftalam, tecnazene, tecoram, tetraconazole, thiabendazole, thiadifluor, thicyofen, thifluzamide, thio thiochlorfenphim
), thiophanate, thiophanate-methyl, thiram, tiadinil, tioxymid, tolclofos-methyl, tolprocarb, tolylfluanid ), triadimefon, triadimenol, triamiphos, triarimol, triazbutil, triazoxide, tributyltin oxide, trichlamide, trichloride piricarb, tricyclazole, tridemorph, trifloxystrobin, triflumizole, triforine, triticonazole, validamycin, varifena valifenalate, vinclozolin, zarilamid, zinc naphthenate, zinc sulfate, zineb, ziram, zoxamide, shiitake mycelium extract (shiitake mycelium extract) and shiitake fruiting body extract.

Bactericides: amoxicillin, ampicillin, bethoxazin, bithionol, bronopol, cefapirin, cefazolin, cefquinome, ceftiofur, chlor chlortetracycline, clavulanic acid, danofloxacin, difloxacin, dinitolmide, enrofloxacin, florfenicol, lincomycin, lomefloxacin (lomefloxacin), marbofloxacin, miloxacin, mirosamycin, nitrapyrin, norfloxacin, octhilinone, ofloxacin, orbifloxacin, oxolinic acid, oxytetracycline, penicillin, streptomycin, thiamphenicol, tiamulin fumarate, tilmicosin phosphate, isovaleric acid acetate Tylosin (acetylisovaleryltylosin), tylosin phosphate, tulathromycin, valnemulin, calcined shell calcium (calcium oxide), Talaromyces spp., Trichoderma spp., Uniothylium spp.

Nematicides: aldoxycarb, benclothiaz, cadusafos, DBCP, dichlofenthion, DSP, ethoprophos, fenamiphos, fensulfothion (fensulfothion), fluazaindolizine, fluensulfone, fosthiazate, fosthietan, imicyafos, isamifos, isazofos, oxamyl, thioxazafen ( thiaxazafen, thionazin, tioxazafen and the like.

Acaricides: acequinocyl, acrinathrin, amidoflumet, amitraz, azocyclotin, benzoximate, bifenazate, bromopropylate, chloro clofentezine, cyenopyrafen, cyflumetofen, dicofol, dienochlor, etoxazole, fenazaquin, fenbutatin oxide, fenothiocarb, fen fenpropathrin, fenpyroximate, fluacrypyrim, formetanate, halfenprox, hexythiazox, milbemectin, propargite, pyflubumide, pyridaben ( pyridaben), pyrimidifen, spirodiclofen, spiromesifen, tebufenpyrad, NA-89 (test name) and the like.

Insecticides: abamectin, acephate, acequinocyl, acetamiprid, acrinathrin, acynonapyr, afidopyropen, afoxolaner, alanycarb, aldicarb ( aldicarb, allethrin, alpha-cypermethrin, alpha-endosulfan, amidoflumet, amitraz, azamethifos, azinphos-ethyl ), azinphos-methyl, azocyclotin, bacillus thuringiensis, bendiocarb, benfluthrin, benfuracarb, bensultap, benzoximate ( benzoximate, benzpyrimoxan, beta-cyfluthrin, beta-cypermethrin, bifenazate, bifenthrin, bioallethrin, bioresmethrin , bistrifluron, broflanilide, bromopropylate, buprofezin, butocarbboxim, carbaryl, carbofuran, carbosulfan, cartap (cartap), chinomethionat, chlorantraniliprole, chlorethoxyfos, chlorfe napyr, chlorfenvinphos, chlorfluazuron, chlormephos, chlorobezilate, chloroprallethrin, chlorpyrifos, chlorpyrifos -methyl), chromafenozide, clofentezine, clothianidin, cyanophos, cyantraniliprole, cyclaniliprole, cycloprothrin, cyenopyrafen cyenopyrafen, cyflumetofen, cyflumetofen, cyfluthrin, cyhalodiamide, cyhalothrin, cyhexatine, cypermethrin, cyphenothrin, cyromazine , deltamethrin, diacloden, diafenthiuron, diazinon, dichlorvos, dichloromezotiaz, dicofol, dienochlor, diflovidazin ), diflubenzuron, dimefluthrin, dimethoate, dimethylvinphos, dinotefuran, diofenolan, disulfoton, DNOC, dT- 80-phthalthrin (d-tetramethrin), emamectin-benzoate, empentri empenthrin, endosulfan, EPN, epsilon-metofluthrin, epsilon-momfluorothrin, esfenvalerate, ethiofencarb, ethiprole ), etofenprox, etoxazole, etrimfos, Febantel, fenazaquin, fenbutatin oxide, fenitrothion, fenobucarb, phenothiocarb ( fenothiocarb, fenoxycarb, fenpropathrin, fenpropathrin, fenpyroximate, fenthion, fenvalerate, fipronil, flometoquin, flonicamid (flonicamid), fluacrypyrim, fluazuron, flubendiamide, flucycloxuron, flucythrinate, flufenerim, flufenoxuron, flufenprox flufenprox, flufiprole, fluhexafon, flumethrin, flupyradifurone, flupyrimin, fluralaner, fluvalinate, fluxametamide, phonophos ), formetanate, formothion, furathiocarb ), gamma-cyhalothrin, halfenprox, halofenozide, heptafluthrin, hexaflumuron, hexythiazox, hydramethylnon, imidacloprid (imidacloprid), imiprothrin, indoxacarb, indoxacarb-MP, isocycloseram, isofenphos, isoprocarb, isoxathion, kappa - bifenthrin, kappa-tefluthrin, lambda-cyhalothrin, lepimectin, lufenuron, malathion, meperfluthrin, metaflumizone , metalcarb, metaldehyde, methacrifos, methamidophos, methidathion, methomyl, methoprene, methoxychlor, methoxyfenozide, methyl bromide ( methyl bromide, metofluthrin, milbemectin, momfluorothrin, monocrotophos, muscalure, nitenpyram, novaluron, noviflumuron, omethoate ), oxazosulfyl, oxydemeton-methyl, oxydeprof os), parathion, parathion-methyl, pentachlorophenol, permethrin, phenothrin, phenthoate, forate, phosalone, phosmet (phosmet), phosphamidon, phoxim, pirimicarb, pirimiphos-methyl, Praziquantel, profenofos, profluthrin, propaphos, propargite ( propargite, prothiofos, protrifenbute, pyflubumide, pymetrozine, pyraclofos, pyrafluprole, pyrethrins, pyridaben, pyridalyl ( pyridalyl, pyrifluquinazon, pyrimidifen, pyriprole, pyriproxyfen, resmethrin, rotenone, silafluofen, spinetoram, spinosad, spirodiclofen, spiromesifen, spiropidion, spirotetramat, spyromesifen, sulfotep, sulfoxaflor, sulprofos, tau- tau-fluvalinate, tebfenozide, tebufenpyrad, teflubenzuron, teflutri tefluthorin, terbufos, tetrachlorantraniliprole, tetrachlorvinphos, tetramethrin, tetramethylfluthrin, tetraniliprole, thiacloprid ( thiacloprid, thiamethoxam, thiocyclam, thiodicarb, thiofanox, thiometon, tolfenpyrad, tralomethrin, transfluthrin, triazamate ), triazuron, trichlorfon, triflumezopyrim, triflumuron, tyclopyrazoflor, vamidothion and zeta-cypermethrin, etc. .

These pesticidal active ingredients can be used alone or in combination of two or more, and the ratio in the case of mixing can also be freely selected. The content of the agricultural chemical active ingredient in the composition of the present invention can be appropriately selected, but is preferably in the range of 0.1 to 50 parts by mass per 100 parts by mass of the composition of the present invention.

The composition of the present invention may further contain various adjuvants as necessary. Auxiliaries that can be used include surfactants, thickeners, antifreeze agents, emulsifiers, salts, pH adjusters, antifoaming agents, antibacterial and antifungal agents, coloring agents, and the like, and include the following.

Surfactants include (A), (B), (C), (D) and (E) below.

(A) nonionic surfactant:
(A-1) Polyethylene glycol-type surfactants: for example, polyoxyethylene alkyl (C _8-18 ) ether, ethylene oxide adduct of alkylnaphthol, polyoxyethylene (mono- or di)alkyl (C _8-12 )phenyl Ethers, formalin condensates of polyoxyethylene (mono or di)alkyl (C _8-12 ) phenyl ethers, polyoxyethylene (mono, di or tri)phenyl phenyl ethers, polyoxyethylene (mono, di or tri) benzylphenyl ether, polyoxypropylene (mono, di or tri) benzyl phenyl ether, polyoxyethylene (mono, di or tri) styryl phenyl ether, polyoxypropylene (mono, di or tri) styryl phenyl ether, polyoxyethylene (mono, Polymers of di- or tri)styrylphenyl ethers, polyoxyethylene polyoxypropylene block polymers, alkyl (C _8-18 ) polyoxyethylene polyoxypropylene block polymer ethers, alkyl (C _8-12 )phenyl polyoxyethylene polyoxypropylene Block polymer ether, polyoxyethylene bisphenyl ether, polyoxyethylene resin acid ester, polyoxyethylene fatty acid (C _8-18 ) monoester, polyoxyethylene fatty acid (C _8-18 ) diester, polyoxyethylene sorbitan fatty acid (C _8-18 ) Esters, glycerol fatty acid ester ethylene oxide adducts, castor oil ethylene oxide adducts, hydrogenated castor oil ethylene oxide adducts, alkyl ( _C8-18 ) amine ethylene oxide adducts and fatty acid ( _C8-18 ) amides Ethylene oxide adducts and the like can be mentioned.

(A-2) Polyhydric alcohol type surfactants: for example, glycerol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, sorbitol fatty acid (C _8-18 ) ester, sorbitan fatty acid (C _8-18 ) ester, sho Examples include sugar fatty acid esters, polyhydric alcohol alkyl ethers and fatty acid alkanolamides.

(A-3) Acetylene-based surfactants: Examples include acetylene glycol, acetylene alcohol, ethylene oxide adducts of acetylene glycol, and ethylene oxide adducts of acetylene alcohol.

(A-4) Other surfactants: Examples include alkyl glycosides.

(B) an anionic surfactant:
(B-1) Carboxylic acid-type surfactants: for example, polyacrylic acid, polymethacrylic acid, polymaleic acid, polymaleic anhydride, maleic acid, or co-polymers of maleic anhydride and olefins (e.g., isobutylene, diisobutylene, etc.) Polymers, copolymers of acrylic acid and itaconic acid, copolymers of methacrylic acid and itaconic acid, copolymers of maleic acid or maleic anhydride and styrene, copolymers of acrylic acid and methacrylic acid, acrylic acid and acrylic acid methyl ester, copolymer of acrylic acid and vinyl acetate, copolymer of acrylic acid and maleic acid or maleic anhydride, N-methyl-fatty acid (C _8-18 ) sarcosinate, resin Included are carboxylic acids, such as acids and fatty acids (C _8-18 ), and salts of those carboxylic acids.

(B-2) Sulfuric acid ester-type surfactants: for example, alkyl (C _8-18 ) sulfates, polyoxyethylene alkyl (C _8-18 ) ether sulfates, polyoxyethylene (mono- or di)alkyl (C _{8 12} ) phenyl ether sulfates, polyoxyethylene (mono- or di)alkyl(C _8-12 ) phenyl ether polymer sulfates, polyoxyethylene (mono-, di- or tri)phenylphenyl ether sulfates, polyoxyethylene (mono-, di- or tri-) benzylphenyl ether sulfate, polyoxyethylene (mono-, di- or tri) styrylphenyl ether sulfate, polyoxyethylene (mono-, di- or tri) styrylphenyl ether polymer sulfate, polyoxy Examples include sulfates of ethylene polyoxypropylene block polymers, sulfates such as sulfated oils, sulfated fatty acid esters, sulfated fatty acids and sulfated olefins, and salts of these sulfates.

(B-3) Sulfonic acid-type surfactants _: for example, paraffin (C _12-22 )sulfonic acids _{, alkyl} (C _8-12 )benzenesulfonic acids, α-olefin (C _14-16 )sulfonic acids, dialkyl (C _8-12 ) sulfosuccinic acid, ligninsulfonic acid, polyoxyethylene (mono or di)alkyl _{( C8-12} ) phenyl ether sulfonic acid, polyoxyethylene alkyl ( _C12-18 ) ether sulfosuccinic _acid half ester, naphthalene _sulfonic acid , (mono- or di)alkyl (C _1-6 ) naphthalene sulfonic acid _, alkyl (C _8-12 ) diphenyl ether disulfonic acid, Igepon _T (trade name), polystyrene sulfonic acid and copolymers of styrene sulfonic acid and methacrylic acid and sulfonic acids, and salts of these sulfonic acids.

(B-4) Phosphate ester type surfactants: for example, alkyl (C _8-12 ) phosphates, polyoxyethylene alkyl (C _8-18 ) ether phosphates, polyoxyethylene (mono- or di)alkyl (C _{8 ) 12} ) phenyl ether phosphates, polyoxyethylene (mono-, di- or tri)alkyl ( _C8-12 ) phenyl ether polymer phosphates, polyoxyethylene (mono-, di- or tri)phenylphenyl ether phosphates, poly oxyethylene (mono-, di- or tri) benzylphenyl ether phosphate, polyoxyethylene (mono-, di- or tri) styrylphenyl ether phosphate, polyoxyethylene (mono-, di- or tri) styrylphenyl ether polymer phosphate, Phosphate esters of polyoxyethylene polyoxypropylene block polymers, phosphate esters such as phosphatidylcholine, phosphatidylethanolimine and condensed phosphoric acid (eg, tripolyphosphoric acid), and salts of these phosphate esters.

Salts in (B-1) to (B-4) above include alkali metals (lithium, sodium, potassium, etc.), alkaline earth metals (calcium, magnesium, etc.), ammonium and various amines (e.g., alkylamines, cyclo alkylamines, alkanolamines, etc.).

(C) cationic surfactant:
Examples thereof include alkylamines, alkyl quaternary ammonium salts, ethylene oxide adducts of alkylamines, and ethylene oxide adducts of alkyl quaternary ammonium salts.

(D) amphoteric surfactant:
Examples thereof include betaine-type surfactants and amino acid-type surfactants.

(E) Other surfactants:
Examples thereof include silicone-based surfactants and fluorine-based surfactants.

These surfactants can be used singly or in combination of two or more, and the ratio when mixed can be freely selected. The content of the surfactant in the composition of the present invention can be appropriately selected, but is preferably in the range of 0.01 to 20 parts by mass, more preferably 0.1 to 10 parts by mass based on 100 parts by mass of the composition of the present invention. and more preferably 0.1 to 3 parts by mass. Further, the type of surfactant is preferably a nonionic surfactant or an anionic surfactant, more preferably an anionic surfactant, still more preferably a sulfonic acid type surfactant, and particularly preferably lignosulfonic acid.

The surfactants described above can also be used as adjuvants to enhance the biological efficacy of the compositions of the present invention.

The thickening agent is not particularly limited, and organic and inorganic natural products, synthetic products and semi-synthetic products can be used. Water-soluble polymer compounds such as sodium acrylate and polyacrylamide, cellulose derivatives such as methylcellulose, carboxymethylcellulose, carboxyethylcellulose, hydroxyethylcellulose and hydroxypropylcellulose, salts of these celluloses, montmorillonite, saponite, hectorite, bentonite, laponite and Examples include smectite clay minerals such as synthetic smectite. One or two or more of these thickeners may be mixed, and the mixing ratio can be freely selected. These thickeners may be added as they are, or may be added after previously being dispersed in water. Also, the content in the composition of the present invention can be freely selected.

Preferred thickeners are cellulose derivatives such as methylcellulose, carboxymethylcellulose, carboxyethylcellulose, hydroxyethylcellulose and hydroxypropylcellulose, salts of these celluloses, smectite clay minerals such as montmorillonite, saponite, hectorite, bentonite, laponite and synthetic smectite. Carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose and their salts, montmorillonite, saponite, hectorite and bentonite are more preferred, and carboxymethyl cellulose, carboxyethyl cellulose and their cellulose salts, montmorillonite and bentonite are more preferred. The content of the thickening agent in the composition of the present invention can be appropriately selected, but is preferably in the range of 0.01 to 10 parts by mass, more preferably 0.1 to 5 parts by mass, relative to 100 parts by mass of the composition of the present invention. and more preferably 0.5 to 5 parts by mass.

Examples of antifreezing agents that can be used include ethylene glycol, diethylene glycol and propylene glycol. The content of the antifreeze agent in the composition of the present invention can be appropriately selected, but it is preferably in the range of 0.1 to 20 parts by mass, more preferably 1 to 15 parts by mass, relative to 100 parts by mass of the composition of the present invention. , more preferably 5 to 10 parts by mass.

Examples of emulsifiers include, but are not limited to, the aforementioned surfactants, water-soluble polymer compounds such as methylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, sodium polyacrylate and polyacrylamide, metal oxides and clays. fine particles, cellulose fibers, lecithin, and the like. These emulsifiers may be used singly or in combination of two or more, and the mixing ratio can be freely selected. These emulsifiers may be added as they are, or may be added after previously being dispersed in water. Also, the content in the composition of the present invention can be freely selected. Preferred emulsifiers are water-soluble polymer compounds such as methylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, sodium polyacrylate and polyacrylamide, fine particles such as metal oxides and clays, cellulose fibers and lecithin, and more preferred. is methylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, more preferably polyvinyl alcohol. Although the content of the emulsifier in the composition of the present invention can be appropriately selected, it is preferably in the range of 0.01 to 20 parts by mass, more preferably 0.1 to 10 parts by mass based on 100 parts by mass of the composition of the present invention. , more preferably 1 to 10 parts by mass.

The salt is not particularly limited, but for example, alkali metal salts (lithium, sodium, potassium, etc.), alkaline earth metal salts of various inorganic and organic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, carbonic acid, sulfonic acid and carboxylic acid. Salts (such as calcium and magnesium), ammonium and various amine salts (such as alkylamines, cycloalkylamines and alkanolamines) and the like. Preferred salts are those of hydrochloric acid, sulfuric acid and phosphoric acid. The content of the salt is desirably not more than the water solubility of the salt, but usually 0.1 to 30 parts by mass, preferably 1 to 20 parts by mass, more preferably 3 to 20 parts by mass.

As the pH adjuster, various inorganic and organic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, sulfonic acid and carboxylic acid, and salts and esters thereof can be used. Specific examples of organic acids include acidic phosphates, citric acid, maleic acid, sorbic acid, lactic acid and tartaric acid. In addition, various buffers such as disodium hydrogen phosphate-citric acid aqueous solution, sodium acetate-hydrochloric acid aqueous solution, formic acid-sodium formate aqueous solution, lactic acid-sodium lactate aqueous solution, tartaric acid-sodium tartrate aqueous solution and sodium citrate-hydrochloric acid aqueous solution are used. The pH can also be adjusted by metered addition. Preferred pH adjusters are inorganic or organic acids, more preferably hydrochloric acid, phosphoric acid, sulfonic acid, carboxylic acid, citric acid, maleic acid, lactic acid, more preferably hydrochloric acid, phosphoric acid, citric acid, maleic acid is. Although the pH of the aqueous suspension herbicidal composition of the present invention is not particularly limited, it is usually pH 2 to 10, preferably pH 3 to 6, more preferably pH 3.5 to 4.5.

Furthermore, antifoaming agents such as silicone emulsions, antibacterial and antifungal agents, coloring agents, and the like may be blended.

The method for producing the composition of the present invention is not limited, but for example, the agrochemical active ingredient is mixed with water in which a thickener, a surfactant, etc. are dispersed and dissolved, and the mixture is pulverized using a wet pulverizer such as a sand grinder. An emulsifier and a fatty acid ester are added to the mixture and emulsified with a homogenizer or the like. The composition of the present invention can control weeds by applying it by a general method commonly used by those skilled in the art, such as foliage treatment and soil treatment. In the case of foliage treatment or soil treatment, the composition of the present invention is usually diluted with water about 5 to 500 times and sprayed on crops, trees, or the soil in which they grow using a sprayer or the like, or from the air. Use a helicopter or the like to spray the undiluted solution or dilute it with water about 2 to 100 times.

EXAMPLES Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these. In addition, "part" means a mass part below.

[Example 1]
To 40.9 parts of water, 2.2 parts of sodium carboxymethyl cellulose (trade name: Celogen 5A, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), 1.1 parts of purified bentonite (trade name: Kunipia F, manufactured by Kunimine Industry Co., Ltd.) is dissolved and dispersed, and 0.5 parts of lignin sulfonate (trade name: Pearllex NP, manufactured by Nippon Paper Industries Co., Ltd.), 0.6 parts of anhydrous citric acid, 10.0 parts of propylene glycol, silicone-based A foaming agent (trade name: KM73, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.2 parts, Benzisothiazolin-3-one (trade name: Proxel GXL (S), manufactured by Lonza Japan Co., Ltd.) 0.1 part was dissolved and 2.6 parts of methazosulfuron and 1.8 parts of halosulfuron-methyl were dispersed in the mixture, and the mixture was wet-ground using 0.85-1.2 mmφ glass beads in a sand grinder (manufactured by Imex Co., Ltd.) to obtain 60 parts of ground slurry. got the part 10 parts of Maltite A520G (trade name, manufactured by Taisei Kayaku Co., Ltd.) are dissolved in the resulting pulverized slurry, and 10 parts of isobutyl oleate (trade name: Vinicizer 30, manufactured by Kao Corporation) are added to clear the mixture. The mixture was emulsified using a mix (CLEARMIX, manufactured by M Technic Co., Ltd.) to obtain 80 parts of emulsified slurry. The resulting emulsified slurry was mixed with 20 parts of water to obtain 100 parts of a uniform aqueous suspension herbicidal composition.

[Comparative Example 1]
An aqueous suspension herbicidal composition was obtained in the same manner as in Example 1, except that the vinylizer 30 was changed to 2-ethylhexyl laurate (trade name: Pastel 2H-12, manufactured by Lion Corporation). .

[Comparative Example 2]
An aqueous suspension herbicidal composition was obtained in the same manner as in Example 1, except that vinylizer 30 was changed to isobutyl adipate (trade name: vinylizer 40, manufactured by Kao Corporation).

[Comparative Example 3]
An aqueous suspension herbicidal composition was obtained in the same manner as in Example 1, except that the vinylizer 30 was changed to 2-ethylhexyl caprylate (trade name: Pastel 2H-08, manufactured by Lion Corporation). .

[Comparative Example 4]
An aqueous suspension herbicidal composition was obtained in the same manner as in Example 1, except that the vinylizer 30 was changed to ethyl lactate (trade name: PURASOLV EL, manufactured by Corbion Japan Co., Ltd.).

[Comparative Example 5]
An aqueous suspension herbicidal composition was obtained in the same manner as in Example 1, except that the vinylizer 30 was changed to methyl oleate (trade name: Pastel M-182, manufactured by Lion Corporation).

[Comparative Example 6]
Production was carried out in the same manner as in Example 1, except that the vinylizer 30 was changed to 2-ethylhexyl lactate (trade name: PURASOLV EHL, manufactured by Corbion Japan Co., Ltd.).

[Comparative Example 7]
Production was carried out in the same manner as in Example 1, except that the vinylizer 30 was changed to diethyl sebacate (trade name: DES-SP, manufactured by Nikko Chemicals Co., Ltd.).

[Test example]
The aqueous suspension herbicidal compositions obtained in Example 1 and Comparative Examples 1 to 5 were placed in 30 mL vials, stored in a constant temperature bath at 54° C. for 14 days, and then metazosulfuron decomposition rate was measured. The decomposition rate was determined by the following formula 1. Table 1 shows the results.
Formula 1
Rate of change over time (degradation rate) % = (RS) / R x 100
R: Metazosulfuron content in the sample before storage at 54°C for 14 days S: Metazosulfuron content in the sample after storage at 54°C for 14 days calculated based on

It was found that the composition of the present invention inhibits the decomposition of metazosulfuron.

The aqueous suspension herbicidal composition of the present invention can control weeds.

Claims (5)

An aqueous suspension herbicidal composition containing (a) metazosulfuron and (b) isobutyl oleate . 2. The aqueous suspension herbicidal composition according to claim 1 , further comprising (c) halosulfuron-methyl. 3. The aqueous suspension herbicidal composition according to claim 1 , which is used after being diluted with water. 4. The aqueous suspension herbicidal composition according to any one of claims 1 to 3 , wherein the aqueous suspension herbicidal composition is a suspoemulsion composition. 5. The method for applying the aqueous suspension herbicidal composition according to any one of claims 1 to 4, wherein the aqueous herbicidal suspension composition is diluted with water and sprayed using a sprayer or a helicopter for foliar application of weeds for paddy field weeds .