TWI544871B - Prevention and treatment of plant diseases - Google Patents

Description

Plant disease prevention and treatment method

The present invention relates to a combination of agricultural and horticultural fungicides for greatly improving the control effect of plant diseases.

Patent Document 1 discloses that a benzamidine pyridine derivative which is an active ingredient of the present invention is effectively used as a bactericide, and may be used in combination with other sterilizing agents as needed. Further, it has been revealed that when the benzamidine pyridine derivative, Prochloraz (Patent Document 2), or difenoconazole (Patent Document 3) are separately combined, an excellent multiplication effect can be obtained. Fungicide composition.

However, there is no specific disclosure regarding the combined use of 3-(2,3,4-trimethoxy-6-methylbenzhydrazide)-5-chloro-2-methoxy-4-methylpyridine or imipenem ( Prochloraz), and three more fungicides.

Prior technical literature Patent literature

[Patent Document 1] International Publication WO 02/02527

[Patent Document 2] International Publication WO 2005/041663

[Patent Document 3] International Publication WO 2010/002026

The active ingredient of the present invention is 3-(2,3,4-trimethoxy-6-methylbenzhydrazide)-5-chloro-2-methoxy-4-methylpyridine, Prochloraz. And the specific bactericide is not sufficient for the specific plant diseases, the residual effect is relatively short, or the resistance bacteria to the specific bactericide is present. In the case of an application, the plant disease is practically only insufficient to show The effect of prevention and treatment.

The object of the present invention is to provide a method for controlling plant diseases which can significantly improve the control effect of plant diseases by combining bactericides.

The inventors of the present invention have solved the above problems, and the results of the study were obtained by 3-(2,3,4-trimethoxy-6-methylbenzoquinone)-5-chloro-2-methoxy-4. -Methylpyridine and Prochloraz are further combined with a specific bactericide, and the unexpected excellent bactericidal effect can be obtained as compared with the case of using each compound alone, and the present invention has been completed.

That is, the present invention relates to the combination of (a) 3-(2,3,4-trimethoxy-6-methylbenzoquinone)-5-chloro-2-methoxy-4-methylpyridine (described later) Referred to as ingredient (a)), (b) Prochloraz (hereinafter also referred to as component (b)), and (c) selected from sterol demethylation inhibitors (but, prochloraz) At least one sterilizing agent (hereinafter, simply referred to as component (c)), which is a group of inhibitors of the electron transporting system complex II, is applied to a method for controlling plant diseases characterized by plants.

Since the bactericide combination of the present invention has a stable and high control effect on plant diseases, the method of the present invention is effective as a method for controlling plant diseases.

The best form for implementing the invention

The component of the present invention (a) 3-(2,3,4-trimethoxy-6-methylbenzhydrazide)-5-chloro-2-methoxy-4-methylpyridine can be used according to the aforementioned patent documents. 1 and the manufacturing method disclosed in Patent Document 2. In addition, this product is known as a compound of the diaryl ketone fungicide-pyriofenone.

The component of the present invention (b) Prochloraz is a compound described in The Pesticide Manual (15th edition; BRITISH CROP PROTECTION COUNCIL), pp. 928-929.

As the component (c) sterol demethylation inhibitor of the present invention (except for Prochloraz), for example, azaconazole, biter triol (bitertanol), tiastrozazole may be mentioned. (bromuconazole), cyproconazole, difenoconazole, diniconazole, epoxiconazole, etaconazole, fenbuconazole, fluoroquine Fluquinconazole, flusilazole, flurifaol, furconazole-cis, hexaconazole, imibenconazole, ipconazole, Metaconazole, myclobutanil, penconazole, propiconazole, prothioconazole, simeconazole, tebuconazole, tetrakeley (tetraconazole), triadimefon, triadimenol, triticonazole triazole compounds; pyridine compounds such as pyrifenox; pyrazines such as triforine a compound; such as nuarimol, fenarimol Pyrimidine compound; Imidazole-based compounds such as oxpoconazole, imazalil, triflumizole, and pefurazoate; and the like. Any of these is a bactericide, a compound described in The Pesticide Manual (15th Edition; BRITISH CROP PROTECTION COUNCIL) or SHIBUYA INDEX 15th edition (SHIBUYA INDEX RESEARCH GROUP).

Among these, a triazole compound or an imidazole compound is preferred. More specifically, cyproconazole, difenoconazole, epoxiconazole, fluquinconazole, flusilazole, hexaconazole, and amine (imibenconazole), metconazole, penconazole, propiconazole, prothioconazole, simeconazole, tebuconazole, tetraconazole , three tailong (triadimenol), Isoproconazole, triflumizole, cyproconazole, epoxiconazole, fluquinconazole, hexaconazole, metconazole, flat Proiconazole, prothioconazole, tebuconazole, tetraconazole are preferred.

As the component (c) electron transporting agent complex II inhibitor of the present invention, for example, penthiopyrad, penflufen, furametpyr, bixafen ( Bixafen), isopyrazam, sedaxane, fluxapyroxadazole pyrazole carboxamide compound; such as boscalid pyridine carboxamide a compound; for example, a thiazole carbamide compound of thifluzamide; an oxocyclohexadiene compound such as carboxin or oxycarboxin; such as fluopyram a pyridyl-ethylbenzamide compound; a furancarbamate compound such as fenfuram; such as flutolanil, mepronil, benodanil a phenyl-benzamide compound; In this Any of the compounds described in the Pesticide Manual (15th edition; BRITISH CROP PROTECTION COUNCIL) or SHIBUYA INDEX 15th edition (SHIBUYA INDEX RESEARCH GROUP).

Among these, a pyrazole carboxamide compound, a pyridine carboxamide compound or a pyridyl-ethylbenzamide compound is preferred. Specifically, penthiopyrad, penflufen, bixafen, isopyrazam, boscalid, and benzepime (sedaxane), flumapyyroxad, and fluopyram are preferred.

Ingredient (a), component (b) and component (c) may also be in the form of a salt. Any salt may be used as the salt system, and may be, for example, an alkali metal salt of a sodium salt or a potassium salt; an alkaline earth metal salt such as a magnesium salt or a calcium salt; a monomethylammonium salt or a dimethyl group; An ammonium salt of an ammonium salt or a triethylammonium salt; an inorganic acid salt such as a hydrochloride, a perchlorate, a sulfate or a nitrate; an organic acid salt such as an acetate, a fumarate or a methanesulfonate; .

The method of the invention is effective for controlling various plant diseases, and effectively controls rice fever such as rice, sesame leaf blight, sheath blight; wheat powdery mildew, scab, rust, snow rot, naked black stalk Disease, eyelid disease, leaf blight, rot disease; citrus black spot disease, scab disease; apple flower rot, powdery mildew, spotted leaf disease, black spot disease; pear black spot disease, black spot disease; Peach gray star disease, black star disease, phomopsis; grape black pox disease, late rot, powdery mildew, dew; persimmon anthracnose, deciduous disease; melon anthracnose, powdery mildew , blight, dew; tomato round Streak disease, leaf mold, disease; black spot disease of cruciferous vegetables, summer blight of potato, disease; powdery mildew of strawberry; plant diseases of gray mold, sclerotinia, etc. of various crops, but especially wheat The disease shows excellent control effects. In addition, it is also effective for controlling soil diseases caused by phytopathogenic diseases such as bacillus, rot, mold, sclerotium, rhizobia, and the like.

The component (a), the component (b) and the component (c) of the present invention are mixed with various adjuvants in the same manner as the conventional pesticide preparation, and are formulated into a powder, a granule, a granule hydrating agent, a hydrating agent, an aqueous suspension agent, and an oily property. Suspending agents, aqueous solvents, emulsions, liquids, pastes, aerosols, microdispersing agents and the like are used in various forms, but as long as they are suitable for the purpose of the present invention, they can be made into all the formulations which are generally used in the field.

When the preparation is prepared, the ingredients (a), (b) and (c) may be mixed together to prepare a preparation, or the preparation may be separately prepared.

Examples of the adjuvant used in the preparation include diatomaceous earth, slaked lime, calcium carbonate, talc, white carbon, clay, bentonite, a mixture of kaolin and sericite, clay, sodium carbonate, sodium hydrogencarbonate, sodium sulfate, zeolite, and starch. Solid carrier; water, toluene, xylene, solvent oil, two Alkane, acetone, isophorone, methyl isobutyl ketone, chlorinated benzene, cyclohexane, dimethyl hydrazine, dimethylformamide, dimethyl acetamide, N-methyl-2- a solvent of pyrrolidone, an alcohol or the like; such as a fatty acid salt, a benzoate, an alkyl sulfosuccinate, a dialkyl sulfosuccinate, a polycarboxylate, an alkyl sulfate, an alkyl sulfate, an alkane Alkyl aryl sulfate, alkyl diglycol ether sulfate, alcohol sulfate salt, alkyl sulfonate, alkyl aryl sulfonate, aryl sulfonate, lignosulfonate, alkyl diphenyl Ether disulfonate, polystyrene sulfonate, alkyl phosphate salt, alkyl aryl phosphate, styryl aryl phosphate, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl Anionic interface of salts of aryl ether sulfate, polyoxyethylene alkyl aryl ether sulfate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl aryl phosphate, naphthalene sulfonic acid formaldehyde condensate Active agent or spreading agent; such as sorbitan fatty acid ester, glycerin fatty acid ester, fatty acid polyglyceride, fatty acid alcohol polyglycol ether, ethynyl glycol, acetylene Alcohol, oxyethylene block polymer, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene styrene aryl ether, polyoxyethylene glycol alkyl ether, polyoxyethylene fatty acid ester, Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hardened castor oil, polyoxypropylene fatty acid ester nonionic surfactant or exhibiting agent; olive oil, Java kapok oil Vegetable oil or mineral oil of castor bean oil, palm oil, camellia oil, coconut oil, sesame oil, corn oil, rice bran oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil, linseed oil, tung oil, liquid paraffin, etc. Wait. Such adjuvants may be selected from those known in the art as long as they do not go beyond the purpose of the present invention. Further, various adjuvants which are generally used, such as a bulking agent, a tackifier, a prepreventing agent, an antifreezing agent, a dispersion stabilizer, a phytotoxicity reducing agent, and an antifungal agent, can also be used. The blending ratio of the active ingredient compound to various adjuvants is generally 0.005:99.995 to 95:5, preferably 0.2:99.8 to 90:10. In fact, when these preparations are used, they can be used as they are, or diluted with a diluent such as water to a predetermined concentration, and various spreading agents can be added as needed.

In addition, the fungicide composition of the present invention may further be mixed with other pesticides, such as fungicides, insecticides, acaricides, nematicides, and soil-killing agents. Insecticides, antiviral agents, attractants, herbicides, plant growth modulators, etc., sometimes exhibit more excellent effects.

Among the other pesticides mentioned above, the active ingredient compound (general name; including part of the application, or the Japanese Plant Epidemic Prevention Association test number) can be exemplified, for example, mepanipyrim, pyrimethanil, race Anilin-based compound of cyprodinil; such as 5-chloro-7-(4-methylpiperidin-1-yl)-6-(2,4,6-trifluorophenyl)[1,2, 4] a triazole pyrimidine compound of triazolo[1,5-a]pyrimidine; a pyridinamine compound such as fluazinam; a nitrogen atomic system such as tricyclazole or probenazole a compound; such as a quinomethionate quinoxaline compound; such as mansen, zineb, mancozeb, polycarbamate, free of rot (metiram), a dithiocarbamate-based compound of propineb, thiram; such as fthalide, chlorothalonil, pentachloronitro Benzene (quinozene) organochlorine compounds; such as benomyl, thiophanate-methyl, carbendazim, thiabendazole, wheat ears (fuberiazole), an imidazole compound of cyazofamid; a cyanoacetamide compound such as cymoxanil; such as metalaxyl, metalaxyl-M ( Alias mefenoxam)), Oxedixyl,ofurace,benalaxyl,benalaxyl-M (alias kiralaxyl, chiralaxyl), furalaxyl, cyprofuram, Isotianil, an aniline compound of tiadinil; a sulfonamide compound such as dichlofluanid; such as cupric hydroxide or copper of oxine copper Compound; such as hymexazol An azole compound; such as fosetyl-A1, tolclofos-Methyl, S-benzylmethyl O, O-diisopropyl phosphorothioate, O-ethyl S, S - organophosphorus compounds of diphenyl dithiophosphate, ethyl aluminum phosphonate, edifenphos, iprobenfos; such as captan, captafol ), a phthalate-based compound of defatted folpet; such as procymidone, iprodione, vinclozolin, a dimethyl quinone imine compound; a thiol compound of silthiopham or fenoxanil; a benzoguanamine compound such as zoxamide; a piperidine compound such as fenpropidin; Fenpropimorph, morpholino compound of tridemorph; organotin-based compound such as fentin hydroxide or fentin acetate; urea system such as pencycuron a compound; such as dimethomorph, flumorphic cinnamic acid compound; such as phenylaminoformate of diehofencarb a compound such as flioxonil or fenpiclonil; such as azoxystrobin, kresoxim-methyl, metominostrobin, three Fluoramine (trifloxystrobin), picoxystrobin, oryzastrobin, dimoxystrobin, pyraclostrobin, fluoxastrobin, enestrobin a methoxy acrylate compound of Pyraoxystrobin or Pyrametostrobin; Famoxadone An oxazolidinone-based compound; for example, a thiazolecarboxamide compound of ethaboxam; such as iprovalicarb, benthiavalicarb-isopropyl Amidoxime-based compound; such as methyl N-(isopropoxycarbonyl)-L-amidoxime-(3RS)-3-(4-chlorophenyl)-β-alanine (valiphenalate) An amino acid compound; an imidazolinone compound such as fenamidone; a hydroxyanilide compound such as fenhexamid; a sulfonamide compound such as flusulfamide a compound; an oxime ether compound such as cyflufenamid; an lanthanide compound; a crotonic acid compound; such as validamycin, kasugamycin, polyoxins Antibiotics; such as iminoctadine, dodine, quinone compounds; quinoline compounds such as tebufloquin; thiazolidines such as flutianil a compound; such as a sulfur-based sulfur-based compound; as another compound, pyridoxine (pyr) Ibencarb), isoprothiolane, pyroquilon, diclomezine, quinoxyfen, propamocarb hydrochloride, chloropicrin, melon (dazomet), metam-sodium, metrafenone, UBF-307, diclocymet, proquinazid, amisulbrom, alias amberromdole, Mandipropamid, fluopicolide, carpropamid, meptyldinocap, N-[(3',4'-dichloro-1,1-dimethyl) Phenylhydrazine methyl]-3-trifluoromethyl-2-pyridinecarboxamide, N-[(3',4'-dichloro-1,1-dimethyl)phenylhydrazinemethyl]-3-methyl 2-thiophene carboxamide, N-[(3',4'-dichloro-1,1-dimethyl)phenylhydrazinemethyl]-1-methyl-3-trifluoromethyl-4- Pyrazole carboxamide, N-[[(2'-methyl-4'-(2-propoxy)-1,1-dimethyl)phenylhydrazinemethyl]-3-trifluoromethyl-2 -pyridine carboxamide, N-[[(2'-methyl-4'-(2-propoxy)-1,1-dimethyl)phenylhydrazinemethyl]-3-methyl-2-thiophene Carboxylamidine, N-[[(2'-methyl-4'-(2-propoxy)-1,1-dimethyl)phenylhydrazinemethyl]-1-methyl-3-trifluoromethyl) 4-pyrazolecarboxylate Amine, N-[[(4'-(2-propoxy)-1,1-dimethyl)phenylhydrazinemethyl]-3-trifluoromethyl-2-pyridinecarboxamide, N-[[ (4'-(2-propoxy)-1,1-dimethyl)phenylhydrazinemethyl]-3-methyl-2-thiophenecarboxamide, N-[[(4'-(2-) Oxy)-1,1-dimethyl)phenylhydrazinemethyl]-1-methyl-3-trifluoromethyl-4-pyrazolecarboxamide, N-[[(2'-methyl-4) '-(2-Pentyloxy)-1,1-dimethyl)phenylhydrazinemethyl]-3-trifluoromethyl-2-pyridinecarboxamide, N-[[(4'-(2-penta) Oxy)-1,1-dimethyl)phenylhydrazinemethyl]-3-trifluoromethyl-2-pyridinecarboxamide, ferimzone, spiroxamine, amine phenylpyrazine Fenpyrazamine, ametoctradin, S-2200, ZF-9646, BCM-061, BCM-062, and the like.

An insecticide, acaricide, nematicide or soil-killing insecticide, or an active ingredient compound of a pesticide for killing other pesticides in the aforementioned other pesticides (general name; including part of the application, or the Japan Plant Epidemic Prevention Association test number), Can be mentioned Examples, such as profenofos, dichlorvos, fenamiphos, fenitrothion, EPN, diazinon, chlorpyrifos, chlorpyrifos-methyl , acephate, prothiofos, fosthiazate, cadusafos, dislufoton, isoxathion, isfenfens, love Ethion, etrimfos, quinalphos, dimethylvinphos, dimethoate, sulprofos, thiometon , vamidothion, pyraclofos, pyridaphthion, pirimiphos-methyl, propaphos, phosalone, formothion, marathon Malathion), tetrachlorvinphos, chlorfenvinphos, cyanophos, trichlorfon, methidathion, phenthoate, ESP, tamarind Azinphos-methyl), fenthion, heptenophos, methoxyc Hlor), parathion, phosphocarb, demeton-S-methyl, monocrotophos, methamidophos, imicyafos, Parathion-methyl Organophosphate compounds of terbufos, phosphamidon, phosmet, and phorate; such as carbaryl, propoxur, aldicarb , carbofuran, thiodicarb, methomyl, oxamyl, ethiofencarb, pirimicarb, fenobucarb ), butyl plus carbosulfan, benfuracarb, bendiocarb, furathiocab, isoprocarb, metolcarb, sputum Xylylcarb), XMC, fenothiocarb urethane compounds; such as cartap, thiocyclam, bensultap, thiosultap-sodium Nereis toxin derivatives; such as dicofol, tetradifon, endosulfan, dienochlor, dieldrin organochlorine compounds; Such as fenbutatin oxide, xyhexatin organometallic compounds; such as fenvalerate, permethramine In), cypermethrin, deltamethrin, cyhalothrin, tefluthrin, fenthrin (ethofenprox), flufenprox, cyfluthrin, fenpropathrin, flucythrinate, fluvalinate, cycloprothrin, celelo Ning (lambda-cyhalothrin), pyrethrins, esfenvalerate, tetramethrin, resmethrin, protrifenbute, bifenthrin, jie Zeta-cypermethrin, acrinathrin, alpha-cypermethrin, allethrin, gamma-cyhalothrin, high-efficiency transcypermethrin (theta- Cypermethrin), tau-fluvalinate, tralmethrin, profluthrin, beta-cypermethrin, beta-cyfluthrin, metinine Metofluthrin), phenothrin, pyrethroid compound of flumethrin; such as diflubenzuron, chlorfluazuron, teflubenzuron, Flufenoxuron, triflumuron, hexaflumur On), lufenuron, novaluron, noififlumuron, bistrifluron, fluzuron benzoquinone-based compounds; such as methoxy Methrone, pyriproxyfen, fenoxycarb, diofenolan, etc. a compound such as pyridabamine; such as fenpyroximate, fipronil, tebufenpyrad, ethiprole, tolfenpyrad ), acetoprole, pyrafluprole, pyrazole-based pyrazole-based compounds; such as imidacloprid, nitenpyram, sub-impura Nicotine such as acetamiprid, thiacloprid, thiamethoxam, clothianidin, nidinotefuran, dinotefuran, nithiazine, etc. a hydrazine-based compound such as tebufenozide, methoxyfenozide, chromafenozide, halofenozide or the like; a pyridine compound such as flonicamid; A special window acid compound such as spirodiclofen; a stilbourin compound such as fluacrypyrim; a pyrimidinamine such as flufenerim Compound; dinitro compound; organic sulfur compound; urea Compound; a triazine-based compound; an anthraquinone-based compound; and, as other compounds, for example, buprofezin, hexythiazox, amitraz, chlordimeform, and chloramphenicol ( Silafluofen), triazamate, pymetrozine, pyrimidifen, chlorfenapyr, indoxacarb, acequinocyl, etoxazole ), cyromazine, 1,3-dichloropropene, diafenthiuron, benclothiaz, bifenazate, spironolactone ( Spiromesifen), spirotetramat, propargite, clofentezine, metaflumizone, flubendiamide, cyflumetofen, chlorantranili Chlorantraniliprole, cyenopyrafen, pyrifluquinazone, fenazaquin, amidoflumet, chlorobenzoate, sulfluramid, amy Hydramethylnon, metaldehyde, HGW-86, AKD-1022, Liano (Ryanodine), pyridalyl (pyridalyl), synergistic alkynyl ether (verbutin) of the compound; and the like. Further, it can also be associated with Bacillus thuringiensis aizawai, Bacillus thuringiensis kurstaki, Bacillus thuringiensis Microbial pesticides such as crystalline protein toxin, entomopathogenic virus agent, entomopathogenic filamentous fungus, nematode filamentous fungus, etc. produced by israelensis, Bacillus thuringiensis japonensis, Bacillus thuringiensis tenebrionis, Bacillus thuringiensis, etc.; such as avermectin, Emamectin Benzoate, milbemectin, milbemycin, spinosad, ivermectin, lepimectin, DE-175, Abamectin, emamectin, spinetoram antibiotics and semi-synthetic antibiotics; such as azadirachtin, rotenone; natural products such as deet The repellent and the like are mixed and used together.

In the present invention, various application methods can be employed, and they can be appropriately used depending on various conditions such as the plant to be used, the method of use, the form of preparation, and the amount of application, and examples thereof include the methods described later.

(1) Those who prepare the components (a), (b) and (c) separately, or directly diluted with water or the like to a specified concentration, and if necessary, add various spreading agents (surfactants, vegetable oils, minerals) Oil, etc.), applied to the subject plant.

(2-1) Those who prepare the ingredients (a) and (b) together with the preparation of the preparation (c), or directly diluted with water or the like to a prescribed concentration, and if necessary, add various spreading agents (interface activity) Agent, vegetable oil, mineral oil, etc.), applied to the plant of interest.

(2-2) Those who prepare the ingredients (a) and (c) together with the preparation of the preparation (b), or directly diluted with water or the like to a prescribed concentration To the extent, if necessary, various spreading agents (surfactant, vegetable oil, mineral oil, etc.) are added and applied to the target plant.

(2-3) Those who prepare the ingredients (b) and (c) together with the preparation of the preparation (a), or directly diluted with water or the like to a prescribed concentration, and if necessary, add various spreading agents (interface activity) Agent, vegetable oil, mineral oil, etc.), applied to the plant of interest.

(3) Those who prepare the ingredients (a), (b) and (c) together, directly or by water to a specified concentration, and if necessary, add various spreading agents (surfactants, vegetable oils, minerals) Oil, etc.), applied to the subject plant.

In the above application methods (1) and (2-1) to (2-3), when the application to the target plant is diluted, for example, by dilution with water or the like to a desired concentration, it may be mixed and applied simultaneously, or each continuous may be used. Or apply at appropriate intervals. The effect of the present invention can be more effectively exerted, and the component (a), the component (b) and the component (c) can be simultaneously applied.

The concentration of the component (a), the component (b) and the component (c) of the present invention varies depending on the plant to be used, the method of use, the form of the formulation, the amount of application, and the like, and cannot be uniformly prescribed, but when the stems and leaves are treated It can be adjusted to a composition (a) of 0.1 to 2000 ppm, preferably 0.4 to 700 ppm, component (b) of 1 to 5000 ppm, preferably 3 to 3000 ppm, and component (c) of 0.5 to 2500. Ppm is preferably from 0.8 to 1500 ppm. In the soil treatment, it can be adjusted to the composition of (a) is preferably 10~500 g/ha, preferably 30~200 g/ha, and the component (b) is preferably 50~2000 g/ha. It is especially good at 100~1000 g/ha, and the composition (c) is 10~2000 g/ha. It is especially good at 40~1000 g/ha.

The appropriate mixing ratio of the component (a), the component (b) and the component (c) is preferably 1 to 100 parts by weight, based on 1 part by weight of the component (a), and the component (b) is 1 to 50 parts by weight. It is preferably 1 to 20 parts by weight, and the component (c) is preferably 0.1 to 100 parts by weight, more preferably 0.1 to 50 parts by weight, more preferably 0.1 to 20 parts by weight.

The preparation of the various preparations or the dilutions in the present invention may be generally performed by a method of application, that is, dispersion (for example, spreading, spraying, misting, atomizing, shot, surface application, etc.), It is carried out by soil application (mixing, infusion, etc.), surface application (coating, powder coating, coating, etc.). In addition, it can also be applied according to the so-called ultra low volume. In this method, it may contain 100% of the active ingredient.

Next, the desired form of the invention is exemplified. However, the invention is not limited by these.

[1] A method for controlling a plant disease characterized by the application of the component (a), the component (b) and the component (c).

[2] A method for controlling a plant disease characterized by comprising a component (a) and a component (b), and a component (c) characterized by a plant.

[3] A method for controlling a plant disease characterized by comprising a component (a) and a component (c), and a component (b) characterized by a plant.

[4] A method for controlling a plant disease characterized by comprising a component (b) and a component (c), and a component (a) characterized by a plant.

[5] The method for controlling according to any one of the above [1] to [4], the component (c) The sterol demethylation inhibitor is a triazole compound, a pyridine compound, a piperazine compound, a pyrimidine compound or an imidazole compound, and the electron transport system complex II inhibitor is a pyrazole carboxamide compound or a pyridine carboxylate. A guanamine compound, a thiazole carbamide compound, an oxathiohexadiene compound, a pyridyl-ethyl benzoguanamine compound, a furancarbamine compound or a phenyl-benzamide compound.

[6] The method for controlling according to any one of the above [1] to [4], wherein the sterol demethylation inhibitor of the component (c) is a triazole compound or an imidazole compound, and the electron transport system complex II is inhibited. The agent is a pyrazole carboxamide compound, a pyridine carboxamide compound or a pyridyl-ethylbenzamide compound.

[7] The method for controlling according to any one of the above [1] to [4], wherein the component (c) is selected from the group consisting of cyproconazole, difenoconazole, epoxiconazole, Fluquinconazole, flusilazole, hexaconazole, imibenconazole, metconazole, penconazole, propiconazole, prothiotoxin Prothioconazole, simeconazole, tebuconazole, tetraconazole, triadimenol, Ixazole (oxpoconazole), triflumizole, penthiopyrad, penflufen, bixafen, isopyrazam, white gram At least one of a group of (boscalid), sedaxane, fluxapyroxad, and fluopyram.

[8] The method for controlling according to any one of the above [1] to [4], wherein the component (c) is selected from the group consisting of difenoconazole, epoxiconazole, fluquinconazole, Hexaconazole, metconazole, prothioconazole, tebuconazole, tetraconazole, triadimenol, Groups of oxpoconazole, penthiopyrad, boscalid, sedaxane, fluxapyroxad, and fluopyram At least one.

[9] The method for controlling according to any one of the above [1] to [8], wherein the component (b) is from 1 to 100 parts by weight relative to 1 part by weight of the component (a), and the component (c) is 0.1~ 100 parts by weight of the mixture is applied in a weight ratio.

[10] The method for controlling according to any one of the above [1] to [9], wherein the component (a), the component (b) and the component (c) are simultaneously applied to the plant.

[11] The method for controlling a wheat disease according to any one of the above [1] to [10], which is a method for controlling a wheat disease.

Additionally, the invention also encompasses the use of a combination of a bactericidal composition or a bactericide. List the appropriate types of situations. However, the invention is not limited by these.

[12] A bactericidal composition comprising component (a), component (b) and component (c).

[13] Contains ingredients (a) and (b) for use with ingredient (c) A bactericide composition for use.

[14] A bactericidal composition comprising component (a) and component (c) for use in combination with component (b).

[15] A bactericidal composition comprising component (b) and component (c) for use in combination with component (a).

[16] The combination of ingredient (a), ingredient (b) and ingredient (c) is used to control plant diseases.

[17] A combination of ingredients comprising component (a) and component (b), and component (c), for controlling plant diseases.

[18] A combination of ingredients comprising component (a) and component (c), and component (b), for controlling plant diseases.

[19] A combination of ingredients comprising component (b) and component (c), and component (a), for controlling plant diseases.

Example

Next, a test example of the present invention will be described, but the present invention is not limited thereto.

Test Example 1: Experiment on prevention of wheat powdery mildew

In a plastic crucible having a diameter of 7.5 cm, cultivated wheat (variety: Nonglin No. 61), when the 1.5-leaf stage is reached, each test compound is adjusted to a prescribed concentration of the drug solution, and a spray gun is used to spread 5 ml/seedling. After the drug solution is dried, the conidia of powdery mildew is sprinkled, inoculated, and stored in a constant temperature room at 20 °C. Vaccination 6 After ~8 days, the sporulation area was examined, and the control price was calculated by the following calculation. The results are shown in Tables 1 to 6. Further, the sporulation area of the non-treated area was determined by performing the same operation as the treatment zone except that the liquid was replaced by water and dispersed by a spray gun.

Control price = (1-a/b) × 100

a: sporulation area of the treatment area, b: sporulation area of the untreated area

Calculate the theoretical value (control price) of the mixture according to the Colby formula described later. When the experimental value is higher than the theoretical value, the bactericidal composition of the present invention has a multiplication effect on wheat powdery mildew. At this time, the theoretical values according to the Colby type are combined and expressed in the first table to the sixth table ( ).

Colby type = (x + y + z) - (xy + xz + yz) / 100 + xyz / 10000

x: the price of the single ingredient (a)

y: the price of the single ingredient (b)

z: the price of the single component (c)

Test Example 2: Experiment on prevention effect of wheat rot

In a plastic crucible having a diameter of 7.5 cm, cultivated wheat (variety: Nonglin No. 61), when the 1.5-leaf stage is reached, each test compound is adjusted to a prescribed concentration of the drug solution, and a spray gun is used to spread 5 ml/seedling. After the drug solution is dried, the conidia suspension of the rot is sprinkled, inoculated, and stored in an inoculation box (humidity of 95% or more) at 20 ° C for 1 day, and then stored in a constant temperature room at 20 ° C. After 9 to 11 days of inoculation, the area of the lesion was investigated, and the control was determined in the same manner as in Test Example 1. The price is as shown in Table 7 to Table 9. Further, the area of the lesion in the non-treatment area was determined by performing the same operation as the treatment area except that the liquid was replaced by water and dispersed by a spray gun.

In addition, the theoretical values according to the Colby formula are combined and expressed in the seventh table to the nineth table ( ).

Claims (7)

A method for controlling plant diseases, characterized in that (a) 3-(2,3,4-trimethoxy-6-methylbenzoquinone)-5-chloro-2-methoxy-4-methylpyridine (b) Prochloraz, and (c) selected from the group consisting of cyproconazole, epoxiconazole, fluquinconazole, hexaconazole, and metconazole. , propiconazole, prothioconazole, tebuconazole, tetraconazole, triadimenol, At least one fungicide which is a group of imidazole (oxpoconazole), penthiopyrad, and boscalid is applied to plants. For example, in the method of controlling the scope of claim 1, wherein (c) is selected from the group consisting of cyproconazole, epoxiconazole, hexaconazole, metconazole, and propiconazole. , prothioconazole, tebuconazole, tetraconazole, triadimenol and At least one of a group of imidazoles (oxpoconazole). For example, in the control method of the first paragraph of the patent application, when the stem and leaf are treated, the application amount of the component (a) is 0.1 to 2000 ppm, the application amount of the component (b) is 1 to 5000 ppm, and the application amount of the component (c) is 0.5~2500 Ppm. For example, in the method of controlling the scope of patent application, in the soil treatment, the application amount of the component (a) is 10 to 500 g/ha, and the application amount of the component (b) is 50 to 2000 g/ha, and the component (c) The application rate is 10~2000g/ha. For example, the method for controlling the first aspect of the patent is based on 1 part by weight of the component (a), the component (b) is 1 to 100 parts by weight, and the component (c) is 0.1 to 100 parts by weight. Apply. A bactericide composition characterized by (a) 3-(2,3,4-trimethoxy-6-methylbenzoquinone)-5-chloro-2-methoxy-4-methylpyridine, (b) Prochloraz, and (c) are selected from the group consisting of cyproconazole, epoxiconazole, fluquinconazole, hexaconazole, metconazole, Propiconazole, prothioconazole, tebuconazole, tetraconazole, triadimenol, At least one fungicide in the group consisting of oxpoconazole, penthiopyrad, and boscalid. A bactericidal composition according to claim 6 wherein (c) is selected from the group consisting of cyproconazole, epoxiconazole, hexaconazole, metconazole, and pleckley ( Propiconazole), prothioconazole, tebuconazole, tetraconazole, triadimenol and At least one of a group of imidazoles (oxpoconazole).