JP2016011260A - Potato scab control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a potato scab control method.SOLUTION: The invention relates to a method for simultaneously carrying out the sterilization of seed potato and the germicidal sterilization of the soil, by applying, during the planting of seed potato, a chemical solution comprising one or more germicide selected from the group consisting of fluazinam, fludioxonil, flusulfamide, oxytetracycline, streptomycin, kasugamycin, oxolinic acid, thiophanate-methyl, basic copper chloride and cupric hydroxide to the seed potato and the vicinity thereof.

Description

The present invention relates to a method for controlling potato scab.

  Potato scab is a disease caused by actinomycetes called Streptomyces, a kind of bacteria. When it develops, it causes scab-like lesions on the surface of the tubers and the appearance is greatly impaired, so the commercial value is greatly reduced. To do. Potato scabs are more likely to occur due to continuous cropping and cause significant damage, which is largely due to the infection of potato scabs from both the seed pods and the soil into the tubers. For this reason, potato scab control methods using fungicides include instant soaking for the purpose of preventing infection from seed pods, disinfection of seed potatoes by spraying chemicals, etc., and mixing with soil for the purpose of preventing infection from soil, etc. The soil is sterilized by sterilization, and each individual sterilization may only be performed. Usually, seed sterilization and soil sterilization are combined, that is, seed sterilized in advance is planted in previously sterilized soil. There are many cases.

For example, Patent Document 1 discloses 3- (3-bromo-6-fluoro-2-methylindol-1-ylsulfonyl) -N, N-dimethyl-1H-1,2,4-triazole-1 as an active ingredient. -Attaching one or more fungicidal active compounds selected from sulfonamides (amisulbrom), cyazofamid, fluazinam, ethaboxam and benchavaricarb to plant seeds, or applying one or more of the fungicidal active compounds before sowing and after covering A method for controlling plant diseases characterized by applying to cultivated soil is described.
The seed sterilization is usually performed from the viewpoint of work efficiency and economy by first disinfecting the seed culm with a disinfectant and drying, and then seeding the seed culm as it is or by cutting it into two or more. . During the work process, the worker was exposed to the disinfectant adhering to the seed potatoes, so it was necessary to consider safety.

  Agrimycin 100 wettable powder (trade name; oxytetracycline / streptomycin wettable powder), bacteside wettable powder (tradename; oxytetracycline / streptomycin / copper hydrate) Agent), Agrepto wettable powder (trade name; streptomycin wettable powder), Attachine wettable powder (trade name; streptomycin / thiophanate methyl wettable powder), Stomai wettable powder (trade name; copper / streptomycin wettable powder), co Side Bordeaux (trade name: cupric hydroxide wettable powder), Knotvan wettable powder (trade name: tolcrofosmethyl fursulfamide), Freonside wettable powder (trade name: fluazinam wettable powder) and Scabrock SC (product) Name: fursulfamide wettable powder) is known and used for soil disinfection As is, soil fumigants and freon side powders such as chloropicrin agent (trade name: fluazinam powders) and Nebijin powder (trade name: flusulfamide powder) and the like are known. However, there is no known method for controlling potato scab that simultaneously performs seed sterilization and soil sterilization.

  The control method described in Patent Document 1 also discloses a method of disinfecting seeds or disinfecting soils, and does not describe performing seed disinfection and soil disinfection at the same time. Furthermore, the method for controlling plant diseases specifically disclosed in Patent Document 1 is only clubroot, and there is no description of a specific method for controlling potato scab and its effects.

JP 2008-189658 A

  The combined use of seed sterilization and soil sterilization can be expected to improve the control effect, but it takes time and may not provide a sufficient control effect. In addition, the combined use of disinfection of seed potatoes and soil sterilization increases the opportunity for workers to be exposed to the disinfectant, so improvement is also desired in terms of worker safety.

  As a result of investigations to solve the above problems, the present inventors have found that when planting seeds, fluazinam, fludioxonil, flusulfamide, oxytetracycline, streptomycin, kasugamycin, oxolinic acid, thiophanate methyl, basic copper chloride, and second hydroxide hydroxide. By applying 100 to 20000 ml of a chemical solution containing one or more fungicides selected from the group consisting of copper to 100 seeds and its vicinity, 100 seeds can be disinfected and soil can be disinfected simultaneously. The present method was found to be safer for the environment and workers than the conventional methods, and to have a high control effect against potato scab, and thus completed the present invention.

  The control method of the present invention exhibits a higher potato scab control effect than the combined use of seed sterilization and soil sterilization. According to the control method of the present invention, there is provided a potato scab control method that is highly safe for the environment and workers and is labor-saving.

[Active ingredients]
Fluazinam, fludioxonil, fursulfamide, oxytetracycline, streptomycin, kasugamycin, oxolinic acid, thiophanate methyl, basic copper chloride, cupric hydroxide, preferably fluazinam.
Commercially available agrochemical formulations containing these active ingredients, such as Freonside SC (trade name; fluazinam wettable powder), agrimycin 100 wettable powder (trade name; oxytetracycline / streptomycin wettable powder), Attachine wettable powder ( Trade name: Streptomycin / thiophanate methyl wettable powder) Cassette wettable powder (trade name; Oxolinic acid / Kasugamycin wettable powder), Scabloc SC (trade name; fullsulfamide wettable powder), Stomai solution 20 (trade name; Streptomycin liquid solution) ), Savior FL (trade name; fludioxonil wettable powder), copper stoma wettable powder (trade name; basic copper chloride / streptomycin wettable powder), bacteside wettable powder (trade name; oxytetracycline / streptomycin / hydroxylated) Cupric wettable powder), mycin 20 wettable powder (trade name; streptoma) Ishin wettable powder) may be used.
The disinfectant of the present invention may be processed alone or in combination.

[Medical solution]
A chemical solution containing 250 to 100,000 ppm, preferably 2500 to 10,000 ppm, more preferably 5,000 to 10,000 ppm of the active ingredient is applied. The drug solution is prepared by diluting an active ingredient or an agrochemical preparation containing the active ingredient with water so as to have a predetermined concentration.

[Application time]
Chemical treatment is performed at the time of planting. The time of planting means the day of planting, more specifically, the period from planting work to after soil covering. The term “planting work” means a series of work in which a planting hole or a trench is dug and seeds are placed in the dug up place. In the method of the present invention, the chemical solution is preferably treated during the planting operation.

[Application place]
In the method of the present invention, the chemical solution is applied to the seed vat and its vicinity. The vicinity of the seed pod means a planting hole or planting groove where the seed pod is planted and a place where the planting hole or planting groove is covered, preferably a planting hole or planting groove where the seed pod is planted. Disinfection of seed potatoes and sterilization of soil can be performed simultaneously by applying a chemical solution to the seed potatoes and the vicinity thereof, preferably to the planting hole or planting groove where the seed potatoes and seed potatoes are planted.

[Medium dose]
A chemical solution of 100 to 20000 mL per 100 strains, preferably 200 to 5000 mL per 100 strains, more preferably 500 to 5000 mL per 100 strains is applied. When the application amount of the chemical solution is small, the seed pod and the vicinity thereof cannot be sufficiently brought into contact with the chemical solution, and the disinfection of the seed potato and the sterilization / disinfection of the soil may be insufficient.

[Application method]
The method of the present invention is characterized in that the chemical solution is applied in such a manner that the seed pod and the chemical solution are in contact with each other and the chemical solution is also in contact with the seed potato, thereby simultaneously performing disinfection of the seed potato and sterilization of the soil. Can do.

  Specific embodiments of the application method of the present invention are as follows: (1) A mode in which a chemical solution is applied in a planting hole or a grooving in which seed pods have been dropped; (2) A chemical solution in a planting hole or in a grooving at the same time as the seed pods are dropped. (3) A mode in which a planting hole or a planting ditch where seed pods are dropped is covered and a chemical solution is applied thereto.

  The chemical solution can be applied using a dispenser, irrigator, spreader or the like. In addition, for example, a chemical solution may be applied using a seed planting machine having a function of providing a planting hole or a planting groove for planting, a function of dropping a seed culm into a planting hole or a planting groove, and a function of applying a chemical solution. The planting machine may further have other functions (for example, a soil covering function, a soil mixing function, a fertilizer simultaneous application function, etc.).

[Combination with other potato scab control methods]
The method of the present invention may be carried out in combination with a general method for controlling potato scab. Common control methods for potato common scab include soil fumigation with bactericides, soil mixing with bactericides, soil preparation with bactericides, bung treatment with bactericides, and grooving with bactericides. Can be mentioned.

[Pesticide formulation]
The disinfectant itself of the present invention may be treated, and in the same way as in the case of conventional agricultural chemical preparations, various forms such as emulsions, wettable powders, liquids, granules, suspension preparations are blended with various adjuvants. You may process what was formulated. Adjuvants used in the formulation include solid carriers such as diatomaceous earth, slaked lime, calcium carbonate, talc, white carbon, kaolin, bentonite, kaolinite, sericite, clay, sodium carbonate, sodium bicarbonate, sodium sulfate, zeolite, starch; water, Solvents such as toluene, xylene, solvent naphtha, dioxane, acetone, isophorone, methyl isobutyl ketone, chlorobenzene, cyclohexane, dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, alcohol Fatty acid salts, benzoates, alkyl sulfosuccinates, dialkyl sulfosuccinates, polycarboxylates, alkyl sulfate esters, alkyl sulfates, alkylaryl sulfates, alkyl diglycol ether sulfates, Cole sulfate ester salt, alkyl sulfonate salt, alkyl aryl sulfonate salt, aryl sulfonate salt, lignin sulfonate salt, alkyl diphenyl ether disulfonate salt, polystyrene sulfonate salt, alkyl phosphate ester salt, alkyl aryl phosphate salt, styryl Aryl phosphate, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl aryl ether sulfate, polyoxyethylene alkyl aryl ether sulfate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl aryl phosphate Anionic surfactants such as salts, salt of naphthalene sulfonic acid formalin condensate; sorbitan fatty acid ester, glycerin fatty acid ester, fatty acid polyglyceride Fatty acid alcohol polyglycol ether, acetylene glycol, acetylene alcohol, oxyalkylene block polymer, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene styryl aryl ether, polyoxyethylene glycol alkyl ether, polyoxyethylene fatty acid ester, Nonionic surfactants such as polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxypropylene fatty acid ester; olive oil, kapok oil, castor oil, palm oil, palm oil, palm Oil, sesame oil, corn oil, rice bran oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil, linseed oil, cutting oil, liquid paraffin And vegetable oils and mineral oils.

  The blending ratio of the bactericide of the present invention and various adjuvants is preferably about 1: 100,000 to 100,000: 1, more preferably about 1: 1000 to 1000: 1 in weight ratio. In actual use of these preparations, use them as they are or dilute them to a predetermined concentration with a diluent such as water, and add various spreading agents (surfactants, vegetable oils, mineral oils, etc.) as necessary. Can be used.

[Combination with other pesticides]
In the treatment of the fungicide of the present invention, other agricultural chemicals such as fungicides, insecticides, acaricides, nematicides, soil insecticides, antiviral agents, attractants, herbicides, plant growth regulators, etc. Can also be processed together.

As an active ingredient compound (generic name; including partial application, or Japan Plant Protection Association test code) of a fungicide in the other agricultural chemicals, for example, it can be appropriately selected from the following compound group. Even when there is no particular description, when various structural isomers such as salts, alkyl esters, and optical isomers exist in these compounds, they are naturally included.
Anilinopyrimidine compounds such as mepanipyrim, pyrimethanil, cyprodinil;
Tria such as 5-chloro-7- (4-methylpiperidin-1-yl) -6- (2,4,6-trifluorophenyl) [1,2,4] triazolo [1,5-a] pyrimidine Zolopyrimidine compounds;
Triadimefon, bitertanol, triflumizole, etaconazole, propiconazole, penconazole, flusilazole, microbutanil, cyproconazole cyproconazole, tebuconazole, hexaconazole, furconazole-cis, prochloraz, metconazole, epoxiconazole, tetraconazole, o Oxpoconazole fumarate, prothioconazole, triadimenol, flutriafol, difenoconazole, fluquinconazole azole), fenbuconazole, bromuconazole, diniconazole, tricyclazole, probenazole, simeconazole, pefazoate, ipconazole, imibenconazole Azole compounds such as (imibenconazole), azaconazole, triticonazole, imazalil;
Quinoxaline compounds such as quinomethionate;
Dithiocarbamate compounds such as maneb, zineb, mancozeb, polycarbamate, metiram, propineb, thiram;
Organochlorine compounds such as fthalide, chlorothalonil, quintozene;
Imidazole compounds such as benomyl, carbendazim, thiabendazole, fuberiazole;
Cyanoacetamide compounds such as cymoxanil;
Metalaxyl, metalaxyl-M (also known as mefenoxam), oxadixyl, offurace, benalaxyl, benalaxyl-M, flaxaxyl, Such as cyprofuram, carboxin, oxycarboxin, thifluzamide, boscalid, bixafen, isothianil, tiadinil, sedaxane Anilide compounds;
Sulfamide-type compounds such as dichlofluanid;
Copper-based compounds such as oxine copper;
Isoxazole compounds such as hymexazol;
Organophosphorus compounds such as fosetyl-Al, tolclofos-methyl, edifenphos, iprobenfos;
Phthalimide compounds such as captafol, captan;
Dicarboximide compounds such as procymidone, iprodione, vinclozolin;
Benzanilide compounds such as flutolanil, mepronil, benodanil;
Amide compounds such as penthiopyrad, penflufen, furametpyr, isopyrazam, silthiopham, fenoxanil, fenfuram, fluxapyroxad;
Benzamide compounds such as fluopyram and zoxamide;
Thiophenamide compounds such as isofetamid;
Piperazine compounds such as triforine;
Pyridine compounds such as pyrifenox;
Pyrimidine compounds such as fenarimol and nuarimol;
Piperidine compounds such as fenpropidin;
Morpholine compounds such as fenpropimorph and tridemorph;
Organotin compounds such as fentin hydroxide and fentin acetate;
Urea-based compounds such as pencycuron;
Synamic acid compounds such as dimethomorph, flumorph, pyrimorph;
Phenyl carbamate compounds such as dietofencarb;
Cyanopyrrole compounds such as fenpiclonil;
Azoxystrobin, kresoxim-methyl, metominostrobin, trifloxystrobin, picoxystrobin, orysastrobin, dimoxystrobin , Pyraclostrobin, fluoxastrobin, enestroburin, pyraoxystrobin, pyrametostrobin, fluoxastrobin, spider (Coumoxastrobin), enoxastrobin, flufenoxystrobin, mandestrobin, triclopyricarb, fenaminstrobin, famoxadone, fenamide Strobilurin compounds such as fenamidone and pyribencarb;
Thiazole carboxamide compounds such as ethaboxam;
Valinamide compounds such as iprovalicarb, benchthiavalicarb-isopropyl;
Acylamino acid compounds such as valiphenalate;
Hydroxyanilide compounds such as fenhexamid;
Oxime ether compounds such as cyflufenamid;
Anthraquinone compounds such as dithianon;
Crotonic acid compounds such as meptyldinocap;
Antibiotics such as validamycin, polyoxins;
Guanidine compounds such as iminoctadine and dodine;
Quinoline compounds such as tebufloquin and quinoxyfen;
Thiazolidine compounds such as flutianil;
Carbamate compounds such as propamocarb hydrochloride, tolprocarb, sulfur compounds such as Sulfur;
Other compounds include isoprothiolane, pyroquilon, diclomezine, chloropicrin, dazomet, metam-sodium, metrafenone, pyriofenone, UBF-307, diclocymet, proquinazid, mandipropamid, fluopicolide, carpropamid, ferimzone, spiroxamine, fenpyrazamine, fenpyrazamine Oxathiapiprolin, picarbutrazox;
Microbicidal agents such as Bacillus amyloliqefaciens strain QST713, Bacillus amyloliqefaciens strain FZB24, Bacillus amyloliqefaciens strain MBI600, Bacillus amyloliqefaciens strain D747;
Examples include plant extracts such as Melaleuca alternifolia extract.

Insecticides, acaricides, nematicides or soil pesticides in the above-mentioned other pesticides, that is, active ingredient compounds of pesticides (generic name; including some pending applications or Japan Plant Protection Association test code) ) Can be appropriately selected from the following compound group, for example. Even when there is no particular description, when various structural isomers such as salts, alkyl esters, and optical isomers exist in these compounds, they are naturally included.
Profenofos, dichlorvos, fenamiphos, fenitrothion, EPN, diazinon, chlorpyrifos, chlorpyrifos-methyl, acephate, prothiophos, prothiophos Fosthiazate, cadusafos, disulfoton, isoxathion, isofenphos, ethion, etrimfos, quinalphos, dimethylvinphos, dimethoate ), Sulprofos, thiometon, bamidothion, pyraclofos, pyridaphenthion, pirimiphos-methyl, pirimiphos-methyl Propaphos, phosalone, formothion, malathion, tetrachlorvinphos, chlorfenvinphos, cyanophos, trichlorfon, methidathion , Phenthoate, ESP, azinphos-methyl, fenthion, heptenophos, methoxychlor, parathion, phosphocarb, demeton-S-S- such as methyl, monocrotophos, methamidophos, imicyafos, parathion-methyl, terbufos, phosphamidon, phosmet, phorate Machine phosphoric ester compound;
Carbaryl, propoxur, aldicarb, carbofuran, thiodicarb, methomyl, oxamyl, ethiofencarb, pirimicarb, fenobucarb, fenobucarb Carbamates such as carbosulfan, benfuracarb, bendiocarb, furathiocarb, isoprocarb, metolcarb, xylylcarb, XMC, fenothiocarb Compound;
Nereistoxin derivatives such as cartap, thiocyclam, bensultap, sodium thiosultap-sodium;
Organochlorine compounds such as dicophor, tetradifon, endosulfan, dienochlor, dieldrin;
Organometallic compounds such as fenbutatin oxide and cyhexatin;
Fenvalerate, permethrin, cypermethrin, deltamethrin, cyhalothrin, tefluthrin, etofenprox, flufenprox, cyfluthrin , Fenpropathrin, flucythrinate, fluvalinate, cycloprothrin, lambda-cyhalothrin, pyrethrin, esfenvalerate, tetramethrin (Tetramethrin), resmethrin, protrifenbute, bifenthrin, zeta-cypermethrin, acrinathrin, alpha-cypermethrin alpha-cypermethrin, allethrin, gamma-cyhalothrin, theta-cypermethrin, tau-fluvalinate, tralomethrin, profluthrin, beta -Pyrethroid compounds such as cypermethrin, beta-cyfluthrin, methfluthrin, phenothrin, flumethrin;
Diflubenzuron, chlorfluazuron, teflubenzuron, flufenoxuron, lufenuron, novaluron, triflumuron, hexaflumuron, hexaflumuron Benzoylurea compounds such as (bistrifluron), nobifluuron, fluazuron;
Juvenile hormone-like compounds such as metoprene, pyriproxyfen, fenoxycarb, diofenolan;
Pyridazinone compounds such as pyridaben;
Pyrazole compounds such as fenpyroximate, fipronil, tebufenpyrad, ethiprole, tolfenpyrad, acetoprole, pyrafluprole, pyriprole;
Imidacloprid, nitenpyram, acetamiprid, thiacloprid, thiamethoxam, clothianidin, nidinotefuran, dinotefuranit, dinotefuranit A noid compound;
Hydrazine compounds such as tebufenozide, methoxyfenozide, chromafenozide, halofenozide;
Pyridine compounds such as pyridalyl and flonicamid;
Cyclic ketoenol compounds such as spirodiclofen, spiromesifen, spirotetramat;
Strobilurin-based compounds such as fluacrypyrim;
Pyrimidinamine compounds such as flufenerim;
Dinitro compounds;
Organic sulfur compounds;
Urea compounds;
Triazine compounds;
Hydrazone compounds;
Anthranilamide compounds such as chlorantraniliprole, cyantraniliprole, cyclaniliprole, tetraniliprole;
Other compounds include buprofezin, hexythiazox, amitraz, chlordimeform, silafluofen, triazamate, pymetrozine, pyrimidifen, chloridmefen ), Indoxacarb, acequinocyl, etoxazole, cyromazine, 1,3-dichloropropene, diafenthiuron, benclothiaz , Bifenazate, propargite, clofentezine, metaflumizone, flubendiamide, cyflumetofen, sienopyrafe (Cyenopyrafen), pyrifluquinazone, phenazaquin, fenazaquin, amidoflumet, sulfluramid, hydramethylnon, metaldehyde, metaldehyde, sulfoxaflor, cypropene, fluenesulfone (cypropene) and compounds such as fluensulfone, ryanodine, verbutin, tioxazafen, fluhexafon, triflumezopyrim, and momfluorothrin.
Furthermore, Bacillus thuringiensis aizawai, Bacillus thuringiensis kurstaki, Bacillus thuringiensis israelensis, Bacillus thuringiensis japonensis, Bacillus thuringiensis tenebrionis or crystalline protein toxins produced by Bacillus thuringiensis, entomopathogenic fungi, nematode pathogenic fungi, etc. Microbial pesticides such as:
Avermectin, emamectin benzoate, embectin, milbemyctin, milbemycin, spinosad, ivermectin, lepimectin, abamectin, emamectin, rammectin Antibiotics and semi-synthetic antibiotics;
Natural products such as azadirachtin, rotenone;
It can also be used in combination with a repellent such as a deet.

As an active ingredient of the said herbicide or a plant growth regulator, it can select from the compound group (general name or development code) of the following (1)-(11) suitably, for example. Even when there is no particular description, when various structural isomers such as salts, alkyl esters, and optical isomers exist in these compounds, they are naturally included.
(1) 2,4-D, 2,4-D-butotyl, 2,4-D-butyl, 2,4-D dimethylammonium (2 , 4-D-dimethylammonimum), 2,4-D-diolamine (2,4-D-diolamine), 2,4-D-ethyl, 2,4-D-2-ethylhexyl (2,4-D-2-ethylhexyl), 2,4-D-isobutyl, 2,4-D-isooctyl, 2,4-D-isopropyl (2,4-D-isopropyl), 2,4-D-isopropylammonium, 2,4-D sodium (2,4-D-sodium), 2,4-D isopropanolammonium (2,4-D-isopropanolammonium), 2,4-D-trolamine (2,4-D-trolamine), 2,4-DB, 2,4-DB-butyl, 2, , 4-DB-dimethylammonium, 2,4-DB iso-o Chill (2,4-DB-isoctyl), 2,4-DB potassium (2,4-DB-potassium), 2,4-DB sodium (2,4-DB-sodium), dichloroprop (dichlorprop), dichloro Propbutyl (dichlorprop-butotyl), dichloroprop-dimethylammonium, dichloroprop-isoctyl, dichlorprop-potassium, dichloroprop-P, dichloroprop -P dimethylammonium, dichloroprop-P-potassium, dichloroprop-P-sodium, MCPA, MCPA-butotyl, MCPA dimethyl Ammonium (MCPA-dimethylammonium), MCPA-2-ethylhexyl, MCPA potassium MCPA-potassium), MCPA sodium (MCPA-sodium), MCPA thioethyl (MCPA-thioethyl), MCPB, MCPB ethyl (MCPB-ethyl), MCPB sodium (MCPB-sodium), mecoprop (mecoprop), mecoprop butyl (mecoprop -butotyl), mecoprop-sodium, mecoprop-P, mecoprop-P-butotyl, mecoprop-P-dimethylammonium, mecoprop-P Phenoxy systems such as 2-ethylhexyl, mecoprop-P-potassium, naproanilide, and clomeprop; 2,3,6-TBA, dicamba (Dicamba), dicamba-butotyl, dicamba-diglycolamine Dicamba-dimethylammonium, dicamba-diolamine, dicamba-isopropylammonium, dicamba-potassium, dicamba-sodium, diclobenil ( dichlobenil, picloram, picloram-dimethylammonium, picloram-isoctyl, picloram-potassium, picloram-triisopropanolammonium ), Picloram-triisopropylammonium, picloram-trolamine, triclopyr, triclopyr-butotyl, triclopyr-trietammonium (triclopyr-triet) aromatic carboxylic acids such as hylammonium, clopyralid, clopyralid-olamine, clopyralid-potassium, clopyralid-triisopropanolammonium, aminopyralid; other naptalams (Naptalam), naptalam-sodium, benazolin, benazolin-ethyl, quinclorac, quinmerac, diflufenzopyr, diflufenzopyr Pyrsodium (diflufenzopyr-sodium), fluroxypyr (fluroxypyr), fluroxypyr-2-butoxy-1-methylethyl (fluroxypyr-2-butoxy-1-methylethyl), fluroxypyr-meptyl, chloroflurenol ( chlorflurenol) Disturbing hormonal effects of plants such as chloroflurenol-methyl, aminocyclopyrachlor, aminocyclopyrachlor-methyl, and aminocyclopyrachlor-potassium It is said that it shows herbicidal efficacy.
(2) chlorotoluron, diuron, fluometuron, linuron, isoproturon, metobenzuron, tebuthiuron, dimefuron, isouron, isouron Carbutilate, methabenzthiazuron, metoxuron, monolinuron, neburon, siduron, terbumeton, trietazine, mebromuron Ureazines: simazine, atrazine, atratone, simetrin, prometryn, dimethametryn, hexazinone, metribuzin, terbuthyrazine such as lazine, cyanazine, ametryn, cybutryne, triaziflam, indaziflam, terbutryn, propazine, metamitron, prometon Triazines; uracils such as bromacil, bromacyl-lithium, lenacil, terbacil; anilides such as propanil, cypromid; swep ), Carbamates such as desmedipham, phenmedipham; bromoxynil, bromoxynil-octanoate, bromoxynil-heptanoate, Ioxynil, ioxynil Hydroxybenzonitriles such as ioxynil-octanoate, ioxynil-potassium, ioxynil-sodium; other pyridates, bentazone, bentazone sodium Sodium, amicarbazone, methazole, pentanochlor, etc. that are said to show herbicidal activity by inhibiting plant photosynthesis.
(3) Quaternary ammonium salt systems such as paraquat and diquat, which are said to themselves become free radicals in the plant body and generate active oxygen to show rapid herbicidal efficacy.
(4) Nitrofen, Chlomethoxyfen, bifenox, acifluorfen, acifluorfen-sodium, fomesafen, fomesafen-sodium ), Oxyfluorfen, lactofen, aclonifen, ethoxyfen-ethyl, fluoroglycofen-ethyl, fluoroglycofen diphenyl ethers; chlorophthalim (Chlorphthalim), flumioxazin, flumiclorac, flumiclorac-pentyl, cinidon-ethyl, fluthiaset, fluthiacet, fluthiac Cyclic imides such as et-methyl; other oxadiargyl, oxadiazon, sulfentrazone, carfentrazone-ethyl, thidiazimin, pentoxazone , Azafenidin, isopropazole, pyraflufen-ethyl, benzfendizone, butafenacil, saflufenacil, flupoxam, fluazolate , Profluazol, pyraclonil, flufenpyr-ethyl, bencarbazone, [3- (2-chloro-4-fluoro-5- (3-methyl-2,6 -Dioxo-4-trifluoromethyl-3,6-dihydro-2H-pyrimidin-1-yl) It has been shown to show herbicidal activity by inhibiting the biosynthesis of chlorophyll in plants such as (xy) pyridin-2-yloxy] ethyl acetate (SYN-523) and abnormally accumulating photosensitized peroxidants in plants. What
(5) pyridazinones such as norflurazon, chloridazon, metflurazon; pyrazolynate, pyrazoloxyfen, benzofenap, topramezone, pyrasul photole pyrazoles such as pyrasulfotole; other amitrole, fluridone, flurtamone, diflufenican, methoxyphenone, clomazone, sulcotrione, mesotrione , Tembotrione, tefuryltrione, bicyclopyrone, isoxaflutole, difenzoquat, difenzoquat methyl sulfate (difenzo) quat-metilsulfate, isoxachlorotole, benzobicyclon, picolinafen, biflubutamid, SW-065, KUH-110, described in the claims of International Publication WO2005118530 Compounds such as carotenoids that inhibit plant pigment biosynthesis and have herbicidal properties characterized by whitening action.
(6) Dicloofop-methyl, diclofop, pyriphenop-sodium, fluazifop-butyl, fluazifop, fluazifop-P (fluazifop-P) Fluazifop-P-butyl, haloxyfop-methyl, haloxyfop, haloxyfop-etotyl, haloxyfop-P, haloxyhop -P-methyl, quizalofop-ethyl, quizalofop-P, quizalofop-P-ethyl, quizalofop-P-ethyl (quizalofop-P-ethyl) quizalofop-P-tefuryl), cyhalofop-butyl, fenoxaprop-ethyl, phenoxaprop-P fenoxaprop-P), fenoxaprop-P-ethyl, metamifop-propyl, metamifop, clodinafop-propargyl, clodinafop, Aryloxyphenoxypropionic acid systems such as propaquizafop; alloxydim-sodium, alloxydim, clethodim, sethoxydim, tralkoxydim, butroxydim, Cyclohexanediones such as tepraloxydim, profoxydim, cycloxydim; others, flamprop-M-methyl, flamprop-M, flamprop Prop-M-isopropyl ( flamprop-M-isopropyl), etc., which have a strong herbicidal effect specifically on gramineous plants.
(7) Chlorimuron-ethyl, chlorimuron, sulfometuron-methyl, sulfometuron, primisulfuron-methyl, primisulfuron, Bensulfuron-methyl, bensulfuron, chlorsulfuron, methsulfuron-methyl, metsulfuron, cinosulfuron, pyrazosulfuron-ethyl , Pyrazosulfuron, azimsulfuron, rimsulfuron, nicosulfuron, flazasulfuron, imazosulfuron, cyclosulfamuron, prosulfuron (p) rosulfuron), flupirsulfuron-methyl-sodium, flupirsulfuron, triflusulfuron-methyl, triflusulfuron, halosulfuron-methyl, halos Ruflon (halosulfuron), thifensulfuron-methyl, thifensulfuron (thifensulfuron), ethoxysulfuron, oxasulfuron, etamethsulfuron, ethametsulfuron- methyl), iodosulfuron, iodosulfuron-methyl-sodium, sulfosulfuron, triasulfuron, tribenuron-methyl, tribenuron uron), tritosulfuron, foramsulfuron, trifloxysulfuron, trifloxysulfuron-sodium, mesosulfuron-methyl, mesosulfuron, Orthosulfamuron, flucetosulfuron, amidosulfuron, propyrisulfuron, metazosulfuron, iofensulfuron, iofensulfuron, European patent publication EP0645386 Sulfonylureas such as the compounds that have been identified: flumetsulam, metosulam, diclosulam, cloransulam-methyl, florasulam, penoxsulam, pyro Triazolopyrimidine sulfonamides such as pyroxsulam; imazapyr, imazapyr-isopropylammonium, imazethapyr, imazethapyr-ammonium, imazaquin, Imidazolinone like imazaquin-ammonium, imazamox, imazamox-ammonium, imazamethabenz, imazamethabenz-methyl, imazapic Pyrithiobac-sodium, bispyribac-sodium, pyriminobac-methyl, pyribenzoxim, pyriftalid, pyrimisulfan (pyrimisulfan) ) Pyrimidinyl salicylic acid series such as: flucarbazone, flucarbazone-sodium, propoxycarbazone-sodium, propoxycarbazone, sulfonylaminocarbonyl such as thiencarbazone Triazolinone; other glyphosate, glyphosate sodium, glyphosate-sodium, glyphosate-potassium, glyphosate-ammonium, glyphosate-diammonium, glyphosate-isopropylammonium (glyphosate- isopropylammonium), glyphosate-trimesium, glyphosate-sesquisodium, glufosinate, glufosinate Glufosinate-ammonium, glufosinate-P, glufosinate-P-ammonium, glufosinate-P-sodium, vilanafos, vilanafos sodium (glufosinate-P-ammonium) What is said to show herbicidal activity by inhibiting plant amino acid biosynthesis, such as bilanafos-sodium, cinmethylin, and triafamone.
(8) Trifluralin, oryzalin, oryzalin, nitalin, pendimethalin, ethalluralin, benfluralin, prodiamine, butralin, dinitramine ( dinitroaniline such as dinitramine); amide such as bensulide, napropamide, propyzamide, pronamide; amiprofos-methyl, butamifos, anilophos (Anilofos), organic phosphorus systems such as piperophos; phenyl carbamate systems such as propham, chlorpropham, barban, carbetamide; daimuron, cumylron ( cumyluron), Bromob Cumylamines such as bromobutide, methyldymron; other asuram, asuram-sodium, dithiopyr, thiazopyr, chlorthal-dimethyl, chlortal (Chlorthal), diphenamid (diphenamid), etc. that are said to show herbicidal efficacy by inhibiting plant cell mitosis.
(9) alachlor, metazachlor, butachlor, pretilachlor, metolachlor, S-metolachlor, tenylchlor, petoxamide Chloroacetamides such as acetochlor, propachlor, dimethenamid, dimethenamid-P, propisochlor, dimethachlor; molinate, Dimepiperate, pyributicarb, EPTC, butyrate, vernolate, pebulate, cycloate, prosulfocarb, esprocarb, thiobencar Thiocarbamate systems such as thiobencarb, diallate, tri-allate, orbencarb; other etobanzanid, mefenacet, flufenacet, toridiphan (Tridiphane), caffenstrole, fentrazamide, oxaziclomefone, indanofan, benfuresate, pyroxasulfone, fenoxasulfone, dalapon , Dalapon-sodium, TCA sodium (TCA-sodium), trichloroacetic acid, etc. are said to show herbicidal efficacy by inhibiting plant protein biosynthesis or lipid biosynthesis thing.
(10) MSMA, DSMA, CMA, endothal (endothall), endothal dipotassium, endothal sodium (endothall-sodium), endtal mono (N, N-dimethylalkylammonium) (endothall-mono ( N, N-dimethylalkylammonium)), etofumesate, sodium chlorate, pelargonic acid, nonanoic acid), phosamine, fosamine-ammonium, pinoxaden ( pinoxaden, ipfencarbazone, aclolein, ammonium sulfamate, borax, chloroacetic acid, sodium chloroacete, cyanamide, methyl Methylarsonic acid Dimethylarsinic acid, sodium dimethylarsinate, dinoterb, dinoterb-ammonium, dinoterb-diolamine, dinoterb-acetate, DNOC, ferrous sulfate, flupropanate, sodium flupropanate, flupropanate-sodium, isoxaben, mefluidide, mefluidide-diolamine, metam (Metam), metam-ammonium, metam-potassium, metam-sodium, methyl isothiocyanate, pentachlorophenol, sodium pentachlorophenol (sodium) pentachloro phenoxide), pentachlorophenol laurate, quinoclamine, sulfuric acid, urea sulfate, methiozolin and the like.
(11) Xanthomonas campestris, Epicoccosirus nematosorus, Epicoccosirus nematosperus, Exserohilum monoseras, monosera, and ceras It is supposed to show herbicidal efficacy by doing.

  Next, although the test example concerning this invention is described, these do not limit this invention.

Test example 1 (potato scab control effect test)
(1) Preparation of chemical solution Fluazinam wettable powder (trade name; Fronside SC; fluazinam 50% w / v, manufactured by Ishihara Sangyo Co., Ltd.) was diluted 100 times with water to prepare a 5000 ppm chemical solution. Flursulfamide wettable powder (trade name; nevidin SC; fursulfamide 5% w / v, manufactured by Mitsui Agro Co., Ltd.) was also diluted 50 times with water to prepare a 1000 ppm drug solution.

(2) Preparation of test soil Add limestone 4.65t / 10a equivalent to potato scab pathogen-contaminated soil, adjust soil pH to 6, and add fertilizer 40kg / 10a equivalent, using a small mixer. Mix to make the test soil.

(3) Treatment method In the method of the present invention, seed pods (Norinichi No.1) are placed in a planting hole provided in a 1 / 5000a pot filled with test soil, and a chemical solution of 5000 ppm fluazinam wettable powder or A predetermined amount of a chemical solution of 1000 ppm of fursulfamide wettable powder was treated with a spray gun to cover the soil.
As a conventional method, instant dipping treatment is performed by instantly immersing seed buds in a chemical solution of 5,000 ppm of fluazinam wettable powder or 1000 ppm of flusulfamide wettable powder, air-drying, planting in a 1 / 5000a pot filled with test soil, and covering with soil. It was. Full-scale soil spraying / mixing treatment is performed by spraying fluazinam powder (trade name; chloroside powder 0.5% w / w, manufactured by Ishihara Sangyo Co., Ltd.) equivalent to 40kg / 10a into a 1 / 5000a pot filled with test soil. After mixing with a small mixer, seed pods were planted.

(4) Survey method After 104 days of planting, the tubers were dug out, the lesions of all the tubers were investigated by index according to the following criteria, the disease severity was calculated by the following formula, and the control value was obtained.
Disease index; 0: No lesion
1: Number of lesions 1 to 3 or lesion area ratio 3% or less
2: Number of lesions 4-10 or lesion area rate 4-13%
3: Number of lesions 11-20 or lesion area rate 12-25%
4: Number of lesions 21 or more or lesion area ratio 26% or more Disease severity = (Σ (number of tubers by disease index x index) / number of survey tubers x 4) x 100
Control value = (1-Disease severity in treated area / Disease severity in untreated area) x 100

表内数字は３連制平均値

The numbers in the table are the average values of the three consecutive systems

  When the fluazinam wettable powder is treated by the method of the present invention, the conventional methods, fluazinam wettable seed soak instant soaking treatment and fluazinam powder whole surface spraying / mixing treatment are more effective than each treatment alone, combined treatment The effect was equivalent or better. Similarly, the treatment with flursulfamide wettable powder by the method of the present invention was clearly more effective than the instant soak treatment of flursulfamide wettable powder. Further, it can be seen that the method of the present invention can reduce the application amount of the active ingredient when an effect equivalent to that of the combined treatment is obtained. That is, it has been clarified that the method of the present invention exhibits an effect superior to the conventional method.

Test Example 2 (Fungicide exposure test)
(1) Preparation of chemical solution Fluazinam wettable powder (trade name; Fronside SC; fluazinam 50% w / v, manufactured by Ishihara Sangyo Co., Ltd.) was diluted 100 times with water to prepare a 5000 ppm chemical solution.

(2) Treatment method The method of the present invention is to cut a seed pod (make-in) with a knife and then plant it in a planting hole provided in a 1 / 5000a pot filled with soil. A predetermined amount was processed with a spray gun, and the soil was covered.
As a conventional method, instant dipping treatment was performed by dipping seed pods in a chemical solution of 5,000 ppm fluazinam wettable powder, air-drying, cutting the seed pods with a kitchen knife, planting them in a 1 / 5000a pot filled with soil, and covering the soil. Full-scale soil spraying / mixing is performed by spraying and mixing fluazinam powder (trade name; chloroside powder 0.5% w / w, Ishihara Sangyo Co., Ltd.) equivalent to 40 kg / 10a into a 1 / 5000a pot filled with soil. Later, seeds cut with a knife were planted and covered with soil.

(3) Analysis of exposure amount After completion of a series of operations by each method, the fluazinam exposed to the worker's gloves (made of latex) is washed with acetonitrile, and the washing solution is appropriately diluted with 80% acetonitrile to obtain LC / MS / MS. For analysis, the amount of fluazinam exposure was measured (triple regime).

The amount of exposure by the method of the present invention was very small compared to the amount of exposure by the conventional method of soaking the seed pod.
Since potato scab control is usually carried out by using both soaked seed pod soaking and full-scale soil spraying / mixing treatment, the method of the present invention has a much higher exposure to the fungicide than the conventional method. It was revealed that the safety was high.

  As described above, it has been clarified that the method of the present invention is a technique that is labor-saving and more excellent in terms of control effect and safety than the conventional method.

Claims (4)

  When planting seeds, a medicinal solution containing one or more fungicides selected from the group consisting of fluazinam, fludioxonil, fursulfamide, oxytetracycline, streptomycin, kasugamycin, oxolinic acid, thiophanate methyl, basic copper chloride and cupric hydroxide A method for controlling potato scab, which is applied to seed potatoes and the vicinity thereof at 100 to 20000 ml per 100 strains.   The method of Claim 1 which applies the chemical | medical solution containing 2500ppm-10000ppm of the said disinfectant to the seed potato and its vicinity.   The method according to claim 1 or 2, wherein the vicinity of the seed pod is a planting hole or a grooving planting the seed pod.   The method according to claim 1, wherein the time of planting the seed pod is from during the seed planting operation to after soil covering.