WO2023127767A1 - Agent de lutte contre des maladies et méthode de lutte contre des maladies - Google Patents

Agent de lutte contre des maladies et méthode de lutte contre des maladies Download PDF

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WO2023127767A1
WO2023127767A1 PCT/JP2022/047806 JP2022047806W WO2023127767A1 WO 2023127767 A1 WO2023127767 A1 WO 2023127767A1 JP 2022047806 W JP2022047806 W JP 2022047806W WO 2023127767 A1 WO2023127767 A1 WO 2023127767A1
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disease
disease control
control agent
soil
plant
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PCT/JP2022/047806
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English (en)
Japanese (ja)
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聡 内田
友紀 大庭
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バイエルクロップサイエンス株式会社
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
    • A01N37/50—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids the nitrogen atom being doubly bound to the carbon skeleton
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P3/00—Fungicides

Definitions

  • the present invention relates to a plant disease control agent and a disease control method. More particularly, the present invention relates to Diaporthe destruens , Alternaria solani , Rhizoctonia solani , Phyllosticta zingiberis , Ceratocystis paradoxa Ceratocystis paradoxa and Albugo macrospora .
  • Plant diseases are caused by primary infection such as contamination of seeds and seedlings for planting diseased seeds, seedlings, branches, tubers, and bulbs, soil contamination in which the soil is already contaminated, infection by diseased residues remaining in the soil, and adjacent soil caused by wind and rain. There is secondary infection from
  • Methods for controlling plant diseases caused by pathogenic filamentous fungi and pathogenic bacteria include, but are not limited to, seedling soaking, foliage spraying, seed treatment, box treatment, soil spraying, soil irrigation, soil mixing, etc. Depending on the disease of the target plant, the type of pesticide and treatment method are appropriately combined.
  • Patent Document 1 describes the application of this compound to plants, plant parts and growing grounds.
  • root rot of sweet potato is a disease caused by infection with a filamentous fungus called Diaporthe destruens , which occurs in nurseries, main fields, tuberous roots during storage, and the like.
  • the root rot of sweet potato was originally distributed in North America, South America, Africa, and New Zealand, but in recent years, it has also been reported in Asia. In Japan, it was first reported in Okinawa in 2018, and is rapidly spreading to major sweet potato producing areas such as Kagoshima (2016), Miyazaki (2019), and Ibaraki (2021), and the decrease in yield has been observed. It's a problem.
  • filamentous fungi e.g., Diaporthe destruens , Alternaria solani , Rhizoctonia solani , Phyllostikta zingiberis ( against diseases caused by at least one selected from the group consisting of Phyllosticta zingiberis , Ceratocystis paradoxa , and Albugo macrospora (hereinafter also referred to as "specific pathogen") , QoI fungicides, QiI fungicides, oxidative phosphorylation inhibitors, SDHI fungicides, QoSI fungicides, complex I NADH oxidoreductase agents, inhibitors of oxidative phosphorylation, ATP synthase, and other respiratory It has been found that plant diseases can be significantly controlled by applying a plant disease control agent containing as an active ingredient at least one selected from the group consisting of inhibitors. The present invention is based on such findings.
  • QoI fungicide, QiI fungicide, oxidative phosphorylation inhibitor, SDHI fungicide, QoSI fungicide, complex I NADH oxidoreductase agent, oxidative It comprises, as an active ingredient, at least one selected from the group consisting of phosphorylation/ATP synthase inhibitors and other respiratory inhibitors.
  • Effective action of the above-mentioned active ingredient against filamentous fungi e.g., specific pathogenic bacteria
  • filamentous fungi e.g., specific pathogenic bacteria
  • agents such as trifloxystrobin which do not have a long half-life in the soil, are quickly decomposed in the environment after application, and thus have a small environmental impact, but their effects do not last for a long period of time. It is technical common sense. However, contrary to such common general knowledge, even when a disease control agent containing a drug with a short soil half-life such as trifloxystrobin is applied (especially when it is sprayed on the soil surface and mixed with the soil) The present inventors' studies have revealed that it exhibits unexpectedly high efficacy against diseases caused by filamentous fungi (for example, specific diseases, especially rot of the root). The present invention is based on such findings.
  • a soil-mixable plant disease control agent comprising, as an active ingredient, a QoI fungicide having a soil half-life equal to or less than a preset threshold, A disease control agent is provided, wherein the disease is a disease caused by a filamentous fungus.
  • an effective amount of a plant disease control agent comprising a QoI fungicide having a soil half-life of a preset threshold value or less as an active ingredient was sprayed on the soil where plants grow.
  • a method for controlling plant diseases comprising a step of mixing, A disease control method is provided, wherein the disease is a disease caused by a filamentous fungus.
  • QoI fungicides QiI fungicides, oxidative phosphorylation inhibitors, and SDHI fungicides against diseases caused by filamentous fungi (e.g., specific pathogens) , QoSI fungicides, complex I/NADH oxidoreductase agents, inhibitors of oxidative phosphorylation/ATP synthase, and other respiration inhibitors.
  • the active ingredient acts effectively against filamentous fungi (e.g., specific pathogenic fungi), and in particular, the active ingredient remains in the plant by being mixed and applied after being sprayed on the soil where the plant grows. It is also an unexpected fact discovered by the present inventors that the plant can be applied in a sufficient amount to suppress the development of resistant bacteria without causing any damage, and that plant diseases can be significantly controlled.
  • filamentous fungi e.g., specific pathogenic fungi
  • FIG. 1 is a chart showing changes in the incidence of sweet potato root rot disease from the planting date of sweet potato seedlings to about 3 months in Test Example 1.
  • FIG. 1 is a graph showing the degree of damage of sweet potato root rot 36 days, 47 days, 55 days, 61 days, and 75 days after planting sweet potato seedlings in Test Example 1.
  • FIG. 1 is a graph showing control values for sweet potato root rot 36 days, 47 days, 55 days, 61 days, 75 days, and 90 days after planting sweet potato seedlings in Test Example 1.
  • FIG. 2 is a chart showing changes in the incidence of sweet potato root rot from the planting date of sweet potato seedlings to about 5 months in Test Example 2.
  • FIG. 2 is a graph showing control values against sweet potato root rot 66 days, 95 days, 121 days, and 154 days after planting sweet potato seedlings in Test Example 2.
  • FIG. 2 is a chart showing changes in the rate of sweet potato root rot diseased strains from the date of planting of sweet potato seedlings to 76 days later in Test Example 3.
  • FIG. 2 is a graph showing the number of sweet potato root rot diseased stems 83 days, 89 days, 96 days, and 110 days after the sweet potato seedlings were planted in Test Example 3.
  • FIG. 10 is a graph showing the degree of ginger white star disease 178 days after the planting date of ginger seed tubers in Test Example 4.
  • FIG. 10 is a graph showing the severity of potato summer blight after 79 days from the date of planting potato seed potatoes in Test Example 5.
  • FIG. 10 is a graph showing the non-germination rate of sugarcane due to sugarcane black rot 33 days after planting sugarcane in Test Example 6.
  • FIG. 10 is a graph showing the degree of radish fissure browning 64 days after sowing of radish in Test Example 7.
  • FIG. 10 is a table showing the mycelial growth inhibitory effects of trifloxystrobin, azoxystrobin, and fluopyram against Diaporthe destruens in Test Example 8.
  • control includes the effect of inactivating disease-causing bacteria, the effect of preventing infection, and the effect of suppressing or preventing the growth of bacteria.
  • QoI fungicide, QiI fungicide, oxidative phosphorylation inhibitor, SDHI fungicide, QoSI fungicide, complex I NADH oxidoreductase agent, oxidative It comprises as an active ingredient at least one selected from the group consisting of phosphorylation/ATP synthase inhibitors and other respiratory inhibitors, and the disease is caused by filamentous fungi (e.g., Diaporthe destruens ), selected from the group consisting of Alternaria solani , Rhizoctonia solani , Phyllosticta zingiberis , Ceratocystis paradoxa , and Albugo macrospora disease caused by at least one
  • filamentous fungi e.g., Diaporthe destruens
  • filamentous fungi examples include, but are not limited to, the genus Aphanomyces, which includes oomycetes, the genus Phytophthora, which includes phytophthora, the genus Pythium, the genus Albugo, which includes white rust, the genus Pernospora, which includes downy mildew, Pseudopernospora, Plasmopara, Rhizopus including zygomycetes, Choanephora, Taphrina including ascomycetes, Blumeria including powdery mildew, Cystotheca, Erysiphe, Golovinomyces, Phyllactinia, Podosphaera, Sawadaea, Oidiopsis, Ceratocystis, Bionectria, Calonectria, Claviceps, Gibberella, Haematonectria, Heteroepichloe, Nectria, Neonectria,
  • the filamentous fungus is preferably at least selected from the group consisting of the genus Diaporthe, the genus Alternaria including the filamentous imperfect fungi, the genus Rhizoctonia including the genus Assporogen, the genus Phyllostica, the genus Ceratocystis, and the genus Albugo including the white rust fungus.
  • a filamentous fungus more preferably Diaporthe destruens , Alternaria solani , Rhizoctonia solani , Phyllosticta zingiberis , Ceratosis At least one selected from the group consisting of Ceratocystis paradoxa and Albugo macrospora , more preferably Diaporthe destruens and Alternaria solani , Rhizoctonia solani , Phyllosticta zingiberis , and Ceratocystis paradoxa .
  • Destruens Diaporthe destruens ).
  • Plants include Convolvulaceae such as Sweet potato (Ipomoea batatas); Poaceae such as Sugarcane (Saccharum officinarum), Sorghum Sorgum (Sorghum bicolor) and Corn (Zea mays); Zingiberaceae such as Myoga (Zingibermioga), Ginger (Zingiber officinale); Horseradish Horseradish (Armoracia rusticana), Mustard mustard (Brassica juncea), Takana (Brassica juncea var. napus), Cauliflower (Brassica oleracea var. botrytis), Cabbage (Brassica oleracea var.
  • Tobacco Tobacco ( Nicotiana tabacum) and other solanaceous plants (Solanaceae); Celery (Apium graveolens var. dulce), Coriander (Coriandrum sativum), Japanese honeywort (Cryptotaenia Canadensis subsp. japonica), carrot Carrot (Daucus carota subsp. sativus), parsley Examples include Apiaceae, such as Parsley (Petroseliumcrispum) and Italian parsley (Petroselinum neapolitanum).
  • Diseases are diseases caused by filamentous fungi (for example, specific pathogens). More specifically, the diseases include sweet potato root rot, sugarcane black rot, ginger white star disease, radish fissure browning, radish white rust, potato summer plague, potato black bruise, or carrot root rot. . Therefore, one aspect of the plant disease control agent of the present invention can be suitably applied during the growth of sweet potato, sugarcane, ginger, radish, potato, or carrot.
  • sweet potato root rot which is a disease caused by Diaporthe destruens , can be remarkably controlled. Therefore, one aspect of the plant disease control agent of the present invention can be applied particularly preferably during the growth of sweet potato.
  • a sufficient amount that can suppress the occurrence of resistant bacteria can be used without leaving it on the plant, and from the viewpoint of being able to significantly control plant diseases, for spraying treatment, for soil mixing after spraying on the soil surface, for injection treatment into the soil, for soil mixing after injection treatment into the soil, for soil irrigation treatment, or for soil mixing after soil irrigation treatment use, that is, it can be suitably used as a soil disease control agent.
  • a preferred embodiment of the disease control agent of the present invention is for spraying to the soil surface, or for mixing with soil after spraying to the soil surface, and a more preferred embodiment is the soil after spraying to the soil surface. For mixing.
  • the growth period of the crop is usually about 110 to about 160 days in the case of sweet potato, and about 60 days in the case of radish. to about 90 days), etc., active ingredients with a long soil half-life (for example, soil half-life exceeding about 80 days, preferably exceeding about 100 days, more preferably exceeding about 150 days , more preferably more than about 200 days), and do not use active ingredients that do not have a long soil half-life.
  • active ingredients with a long soil half-life for example, soil half-life exceeding about 80 days, preferably exceeding about 100 days, more preferably exceeding about 150 days , more preferably more than about 200 days
  • the disease control agent of the present invention is for soil mixing (preferably for spraying on the soil surface, or for soil mixing after spraying on the soil surface, more (preferably for mixing with soil after application to the soil surface), the active ingredient has a surprisingly short soil half-life (for example, a soil half-life of about 100 days or less, preferably about 80 days or less, more preferably about 60 days or less, even more preferably about 50 days or less, even more preferably about 25 days or less, even more preferably about 10 days or less).
  • a soil half-life for example, a soil half-life of about 100 days or less, preferably about 80 days or less, more preferably about 60 days or less, even more preferably about 50 days or less, even more preferably about 25 days or less, even more preferably about 10 days or less.
  • filamentous fungi can be controlled.
  • the preset threshold for the soil half-life of the disease control agent is 100 days, preferably 80 days, more preferably 60 days, even more preferably 50 days, and even more preferably Preferably 25 days, even more preferably 10 days.
  • the soil half-life of each drug for example, the agricultural chemical abstracts and examination reports for each drug disclosed by the Agriculture, Forestry and Fisheries Food Safety Technology Center, an independent administrative agency, may be referred to.
  • the content of the active ingredient is an amount that can control filamentous fungi (e.g., specific pathogens), and is an amount that does not exceed the residual standard value set for each plant. be. Therefore, those skilled in the art can appropriately set the content of the active ingredient according to the type of plant, specific pathogenic bacteria, and the like.
  • the disease control agent of the present invention is usually diluted before application.
  • QoI fungicide, QiI fungicide, oxidative phosphorylation inhibitor, SDHI fungicide, QoSI fungicide, complex I NADH oxidoreductase agent, oxidative phosphorylation - Contains as an active ingredient at least one selected from the group consisting of ATP synthase inhibitors and other respiratory inhibitors. Therefore, aspects of the disease control agent of the present invention include QoI fungicides, QiI fungicides, oxidative phosphorylation inhibitors, SDHI fungicides, QoSI fungicides, complex I NADH oxidoreductase agents, and oxidative phosphorylation agents.
  • combinations of SDHI fungicides and other respiratory inhibitors combinations of QoSI fungicides and complex I NADH oxidoreductase agents; combinations of QoSI fungicides and inhibitors of oxidative phosphorylation and ATP synthase; a combination of a complex I NADH oxidoreductase agent and an inhibitor of oxidative phosphorylation/ATP synthase, a combination of a complex I NADH oxidoreductase agent and another respiratory inhibitor, combinations of inhibitors of oxidative phosphorylation/ATP synthase and other respiratory inhibitors; combinations of QoI fungicides and QiI fungicides and oxidative phosphorylation inhibitors; combinations of QoI fungicides, QiI fungicides and SDHI fungicides; Combinations of QiI fungicides, oxidative phosphorylation inhibitors, and SDHI fungicides, and combinations of QoI fungicides, QiI fungicides, and
  • the disease control agent of the present invention preferably contains a QoI fungicide or an oxidative phosphorylation inhibitor as an active ingredient. Therefore, preferred embodiments of the disease control agent of the present invention include QoI fungicides, oxidative phosphorylation inhibitors, combinations of QoI fungicides and QiI fungicides, combinations of QoI fungicides and oxidative phosphorylation inhibitors, and QoI fungicides.
  • a combination of More preferred embodiments of the disease control agent of the present invention include QoI fungicides, oxidative phosphorylation inhibitors, and combinations of QoI fungicides and SDHI fungicides.
  • QoI fungicides include, for example, Trifloxystrobin, Azoxystrobin, Flufenoxystrobin, Picoxystrobin, Mandestrobin, Kresoxim -methyl), Metominostrobin, Orysastrobin, Fluoxastrobin, Fenamidon, Pyribencarb, Methyltetraprole, Famoxadone, Pyraclostrobin Pyraclostrobin, Coumoxystrobin, Enoxastrobin, Pyraoxystrobin, Pyrametostrobin, Triclopyricarb, Dimoxystrobin, and Fenaminstrobin, as well as salts thereof.
  • QoI fungicides are, for example, trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, orysastrobin, fluoxastrobin, fenamidone, famoxadone, and pyraclostrobin, and At least one selected from the group consisting of these salts is preferred.
  • the QoI fungicide preferably does not have a long soil half-life.
  • QoI fungicides include, for example, trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, orysastrobin, fluoxastrobin, fenamidone, famoxadone, and pyraclostrobin, and their at least one selected from the group consisting of salts, preferably at least one selected from the group consisting of trifloxystrobin, cresoxime methyl, orysastrobin, fenamidone, famoxadone, and salts thereof; At least one selected from the group consisting of robin and salts thereof is more preferred.
  • the QoI fungicide is, for example, trifloxystrobin, azo Xystrobin, picoxystrobin, mandestrobin, pyraclostrobin, and at least one selected from the group consisting of salts thereof, more preferably trifloxystrobin and azoxystrobin, and salts thereof At least one selected from the group consisting of is more preferred, and at least one selected from the group consisting of trifloxystrobin and salts thereof is even more preferred.
  • QoI fungicides can be expected to have a higher control effect against diseases (e.g., sweet potato root rot) caused by filamentous fungi of the genus Diaporthe (e.g., Diaporthe destruens) compared to other QoI fungicides. .
  • diseases e.g., sweet potato root rot
  • filamentous fungi of the genus Diaporthe e.g., Diaporthe destruens
  • QoI fungicides may be used singly or in combination of two or more.
  • their mixing ratio is not particularly limited, and is an amount that can control filamentous fungi (e.g., specific pathogens), and the residue standard value set for each plant not to exceed Therefore, those skilled in the art can appropriately set the blending ratio according to the type of plant, specific pathogenic bacteria, and the like.
  • QiI fungicides include, for example, Florylpicoxamid, Metalylpicoxamid, Cyazofamid, Amisulbrom, and Fenpicoxamid, and salts thereof. mentioned.
  • the QiI fungicide preferably does not have a long soil half-life.
  • Such QiI fungicides include, for example, at least one selected from the group consisting of cyazofamid, amisulbrom, and salts thereof.
  • QiI fungicides may be used singly or in combination of two or more.
  • their mixing ratio is not particularly limited, and is an amount that can control filamentous fungi (e.g., specific pathogens), and the residual standard value set for each plant not to exceed Therefore, those skilled in the art can appropriately set the blending ratio according to the type of plant, specific pathogenic bacteria, and the like.
  • Oxidative phosphorylation inhibitors include, for example, Ferimzone, Binapacril, Meptyldinocap, Dinocap, and salts thereof.
  • the oxidative phosphorylation inhibitor preferably does not have a long soil half-life.
  • oxidative phosphorylation inhibitors include, for example, at least one selected from the group consisting of ferimzone and salts thereof.
  • the oxidative phosphorylation inhibitors may be used singly or in combination of two or more.
  • the mixing ratio is not particularly limited, and the amount is sufficient to control specific pathogenic bacteria, and does not exceed the residue limit set for each plant. quantity. Therefore, those skilled in the art can appropriately set the blending ratio according to the type of plant, specific pathogenic bacteria, and the like.
  • SDHI fungicides include, for example, Pyrapropoyne, Isoflucypram, Mepronil, Flutolanil, Fluopyram, Benzovindiflupyl, Bixafen, Fluindapyr ( Fluindapyr, Fluxapyroxad, Furametpyr, Inpyrfluxam, Isopyrazam, Penflufen, Sedaxane, Pydiflumetofen, Pyraziflumid ), Thifluzamide, Boscalid, Penthiopyrad, Benodanil, Isofetamide, Cyclobutrifluram, Fenfuram, Carboxin, Oxycarboxin ( Oxycarboxin), and Fluindapyr, and salts thereof.
  • the SDHI fungicide is preferably at least one selected from the group consisting of fluopyram, boscalid, and salts thereof.
  • the QoI fungicide is, for example, fluopyram and boscalid, and their At least one selected from the group consisting of salts of is preferred.
  • the SDHI fungicides may be used singly or in combination of two or more.
  • their blending ratio is not particularly limited, and is an amount that can control filamentous fungi (e.g., specific pathogens), and the residual standard value set for each plant Any amount that does not exceed Therefore, those skilled in the art can appropriately set the blending ratio according to the type of plant, specific pathogenic bacteria, and the like.
  • QoSI antiseptics include, for example, Ametoctradin or salts thereof.
  • Complex I NADH oxidoreductase agents include, for example, Diflumetorim, Tolfenpyrad, and Fenazaquin, and salts thereof.
  • inhibitors of oxidative phosphorylation/ATP synthase include at least one organotin selected from the group consisting of triphenyltin acetate, triphenyltin chloride, triphenyltin hydroxide, and salts thereof. is mentioned.
  • Other respiratory inhibitors include, for example, Silthiofam or salts thereof.
  • QoI fungicides, QiI fungicides, oxidative phosphorylation inhibitors, SDHI fungicides, QoSI fungicides, Complex I NADH oxidoreductase agents do not have long soil half-lives. is preferred.
  • the soil half-lives of representative QoI fungicides, QiI fungicides, oxidative phosphorylation inhibitors, SDHI fungicides, QoSI fungicides, Complex I NADH oxidoreductase agents are shown in Table 1 below.
  • QoI fungicides QiI fungicides, oxidative phosphorylation inhibitors, SDHI fungicides, QoSI fungicides, complex I NADH oxidoreductase agents, inhibitors of oxidative phosphorylation and ATP synthase
  • salt used with other respiratory inhibitors is not particularly limited as long as it is an agriculturally acceptable salt.
  • salts include, but are not limited to, inorganic acids (such as, but not limited to, hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, carbonic acid, phosphoric acid, etc.) or organic acids such as, but not limited to, formic acid, acetic acid, propionic acid, glycolic acid, gluconic acid, lactic acid, pyruvic acid, oxalic acid, malic acid, maleic acid, malonic acid, succinic acid, fumaric acid acid, tartaric acid, citric acid, aspartic acid, ascorbic acid, glutamic acid, anthranilic acid, benzoic acid, cinnamic acid, mandelic acid, embonic acid, phenylacetic acid, methanesulfonic acid, ethanesulfonic acid, p-toluenesulfonic acid, salicylic acid, etc.
  • inorganic acids such as, but not limited to, hydrochloric acid, hydrobromic
  • salts with metals e.g., but not limited to sodium, potassium, calcium, magnesium, iron, zinc, copper, manganese
  • ammonium salts organic bases (including but not limited to isopropylamine, trimethylamine, diethylamine, triethylamine, tripropylamine, ethanolamine, 2-diethylaminoethanol, trimethamine, dicyclohexylamine, lysine, arginine, histidine, caffeine, procaine, hydrabamine, choline , betaine, ethylenediamine, glucosamine, methylglucamine, theobromine, purines, piperazine, piperidine, N-ethylpiperidine, etc.).
  • QoI fungicides QiI fungicides, oxidative phosphorylation inhibitors, SDHI fungicides, QoSI fungicides, complex I NADH oxidoreductase agents, inhibitors of oxidative phosphorylation and ATP synthase, or other respiratory inhibitors
  • solvates thereof eg, hydrates thereof
  • crystal polymorphs thereof e.g, crystal polymorphs thereof.
  • Specific embodiments of the disease control agent of the present invention include trifloxystrobin or its salts, azoxystrobin or its salts, fluopyram or its salts, trifloxystrobin or its salts and azoxystrobin or its salts. combinations, combinations of trifloxystrobin or its salts and fluopyram or its salts, combinations of azoxystrobin or its salts and fluopyram or its salts, trifloxystrobin or its salts and azoxystrobin or its salts and fluopyram or Combination with the salt etc. are mentioned.
  • Preferred specific embodiments of the disease control agent of the present invention include trifloxystrobin or its salts, azoxystrobin or its salts, fluopyram or its salts, and combinations thereof, and more preferred specific embodiments. These include trifloxystrobin or salts thereof and combinations of trifloxystrobin or salts thereof and fluopyram or salts thereof.
  • the disease control agent of the present invention includes a QoI fungicide, a QiI fungicide, an oxidative phosphorylation inhibitor, an SDHI fungicide, a QoSI fungicide, a complex I/NADH oxidoreductase agent, and an oxidative phosphorylation/ATP synthase.
  • a QoI fungicide a QiI fungicide, an oxidative phosphorylation inhibitor, an SDHI fungicide, a QoSI fungicide, a complex I/NADH oxidoreductase agent, and an oxidative phosphorylation/ATP synthase.
  • other compounds or pesticides that may be useful as adjuvants and/or pesticides may be further included, if desired.
  • the disease control agent of the present invention may be mixed or used in combination with other compounds or agricultural chemicals that may be useful as adjuvants and/or agricultural chemicals, if desired.
  • auxiliary agents include, but are not limited to, carriers, spreading agents, penetrating agents, wetting agents, thickening agents, emulsifying agents, suspending agents, dispersing agents, stabilizers, and the like.
  • the carrier may be either a solid carrier or a liquid carrier.
  • solid carriers include, but are not limited to, starch, sugar, cellulose powder, cyclodextrin, activated carbon, soybean powder, wheat flour, rice husk powder, wood powder, fish powder, animal and plant powders such as milk powder; talc, kaolin, bentonite, organic bentonite, calcium carbonate, calcium sulfate, sodium bicarbonate, zeolite, diatomaceous earth, white carbon, clay, alumina, silica, mineral powder such as sulfur powder;
  • Liquid carriers include, but are not limited to, water; aliphatic/aromatic hydrocarbons such as cyclohexane, kerosene, kerosene, liquid paraffin, xylene, trimethylbenzene, tetramethylbenzene, solvent naphtha; Halogenated hydrocarbons such as chloroform and chlorobenzene; alcohols such as ethanol and ethylene glycol; ketones such
  • Spreading agents include, but are not limited to, those known to those skilled in the art, or A combination thereof can be used.
  • the disease control agent of the present invention may be formulated into a desired dosage form, for example, by a known method.
  • the dosage form of the disease control agent of the present invention is preferably solid such as powders and granules, or liquid such as wettable powders, emulsions, aqueous solutions or oils. Dry flowable formulations, wettable granules, SE formulations, or water-soluble packaging formulations are more preferred, and SC formulations are even more preferred.
  • the plant disease control agent of the present invention is preferably for mixing with soil after spraying on the soil surface, and after spraying on the soil surface. More preferably, it is an SC agent for soil mixing.
  • the plant disease control agent of the present invention preferably contains trifloxystrobin SC or a combination of trifloxystrobin SC and fluopyram SC as an active ingredient.
  • Such active ingredients may be commercially available products, such as Flint (registered trademark) Floble 25 (manufactured by Bayer CropScience) as trifloxystrobin SC, and Luna ( registered trademark) Sansation (manufactured by Bayer CropScience).
  • the content of the active ingredient is such that the effective amount to be applied to the growing soil is 500 (g ai/ha) or more and 4000 (g ai/ha) or less. ai/ha) or less, more preferably 900 (g ai/ha) or more and 3000 (g ai/ha) or less, and 1000 (g ai/ha) or more and 2500 (g ai/ha) or less. More preferably, the amount is more than 1000 (g ai/ha) and 2500 (g ai/ha) or less is even more preferable.
  • the unit of the effective amount of the disease control agent refers to the amount (g) of the active ingredient (ai (active ingredient)) per hectare (ha), and the disease control agent contains multiple active ingredients. If , it refers to the amount (g) of active ingredient per hectare (ha) of each ingredient.
  • the disease control agent of the present invention contains trifloxystrobin SC or a combination of trifloxystrobin SC and fluopyram SC as an active ingredient, and is particularly advantageous as a control agent for sweet potato root rot.
  • the effective amount to be applied to the growing soil is 1000 (g a.i./ha) or more and 2500 (g a.i./ha) or less, so that the active ingredient does not remain in the sweet potato. , can be applied in a sufficient amount to suppress the development of resistant bacteria, and can significantly control sweet potato root rot.
  • QoI fungicide, QiI fungicide, oxidative phosphorylation inhibitor, SDHI fungicide, QoSI fungicide, complex I NADH oxidoreductase agent, oxidative After spraying an effective amount of a plant disease control agent comprising as an active ingredient at least one selected from the group consisting of phosphorylation/ATP synthase inhibitors and other respiration inhibitors to the soil where plants grow.
  • the step of mixing (hereinafter also referred to as “application step”), and the disease is caused by filamentous fungi (for example, Diaporthe destruens , Alternaria solani , Rhizoctonia solani ), Phyllosticta zingiberis , Ceratocystis paradoxa , and at least one selected from the group consisting of Albugo macrospora ).
  • filamentous fungi for example, Diaporthe destruens , Alternaria solani , Rhizoctonia solani ), Phyllosticta zingiberis , Ceratocystis paradoxa , and at least one selected from the group consisting of Albugo macrospora .
  • filamentous fungi for example, Diaporthe destruens , Alternaria solani , Rhizoctonia solani
  • Phyllosticta zingiberis for example, Phyllosticta zingiberis , Ceratocystis paradoxa
  • the application step is a step of spraying the disease control agent on the growth soil and then mixing it from the day to four weeks before planting the seedlings.
  • the disease control agent is preferably sprayed on the day to 3 weeks before planting seedlings, more preferably on the day to 2 weeks before, even more preferably on the day to 1 week before. Even more preferred is application ⁇ 3 days in advance.
  • the application step includes spraying the disease control agent on the growing soil once to three times.
  • the disease control agent is preferably sprayed once or twice, and more preferably sprayed once.
  • the application amount of the disease control agent can be appropriately set according to the area of the soil where the plant grows.
  • L / 10a) or less is preferable, 2 (L / 10a) or more and 200 (L / 10a) or less is more preferable, 3 (L / 10a) or more and 150 (L / 10a) or less is more preferable, 4 (L / 10a) More than 100 (L/10a) or less is even more preferable.
  • the unit of application amount (L/10a) indicates the application amount (L) per 10 ares (a).
  • the effective amount of the disease control agent to be applied to the growing soil includes an amount of 500 (g a.i./ha) or more and 4000 (g a.i./ha) or less, The amount of 750 (g a.i./ha) or more and 3500 (g a.i./ha) or less is preferable, and the amount of 900 (g a.i./ha) or more and 3000 (g a.i./ha) or less is more preferable, and 1000 (g a.i./ha) ha) more than 2500 (g a.i./ha) or less is more preferred.
  • trifloxystrobin as an example of an active ingredient of a disease control agent, those skilled in the art would not apply a high dose such as the effective dose shown above due to concerns about its residue on plants.
  • the inventors believe that trifloxystrobin's extremely short soil half-life of about 6 days suggests that it is degraded faster than it can be taken up by plants and retained. I found Therefore, as an effective amount of the disease control agent containing trifloxystrobin or a salt thereof as an active ingredient, even if the high dose shown above is applied, it is possible to suppress the active ingredient from remaining in the plant, and It was found that the possibility of survival of pathogenic bacteria can be extremely reduced and the occurrence of resistant bacteria can be prevented. This is an unexpected fact beyond the technical common sense in this field.
  • the amount of the disease control agent to be applied can be appropriately set according to the area of the soil where the plant grows, and may be an amount that applies a high dose effective amount shown above.
  • the application amount of the disease control agent is preferably 1 (L/10a) or more and 250 (L/10a) or less, and 2 (L/10a) or more and 200 (L/10a). ) or less, more preferably 3 (L/10a) or more and 150 (L/10a) or less, and even more preferably 4 (L/10a) or more and 100 (L/10a) or less.
  • the method of spraying the disease control agent in the application step can be selected according to the amount of spraying, and examples thereof include spraying using machines such as watering cans, hand sprays, sprayers, and tractors, and aerial spraying using drones. . If the application amount is 50 to 100 (L/10a), it can be applied using a watering can or a sprayer. If the application amount is 1 to 10 (L/10a), it can be applied using a hand spray or drone.
  • trifloxystrobin SC or a combination of trifloxystrobin SC and fluopyram SC is contained as an active ingredient, which is particularly advantageous for controlling sweet potato root rot.
  • the effective amount to be sprayed on the growing soil is 1000 (g a.i./ha) or more and 2500 (g a.i./ha) or less, respectively, so that the active ingredient does not remain in the sweet potato. can be applied in a sufficient amount to suppress the occurrence of , and can significantly control sweet potato root rot.
  • the plant disease control method of the present invention it is significantly advantageous against primary infections such as soil contamination in which the soil is already contaminated.
  • primary infections such as soil contamination in which the soil is already contaminated.
  • conventionally known foliage spraying treatments may be used in combination. That is, the plant disease control method of the present invention does not constitute any other conventionally known control method.
  • Such a plant disease control method can control not only primary infections such as soil contamination, but also secondary infections from adjacent soil due to wind and rain, etc., so it can be said that it is a remarkably advantageous means as a method for controlling pathogenic bacteria.
  • a plant disease control agent comprising as an active ingredient at least one selected from the group consisting of respiratory inhibitors, wherein the disease is Diaporthe destruens , Alternaria solani ), Rhizoctonia solani , Phyllosticta zingiberis , Ceratocystis paradoxa , and Albugo macrospora .
  • a disease control agent [2] The disease control agent according to [1], which is for mixing with soil.
  • the QoI fungicide is trifloxystrobin, azoxystrobin, fluphenoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, metminostrobin, orysastrobin, fluoxastrobin, fenamidone, pyribencarb , methyltetraprole, famoxadone, pyraclostrobin, commoxystrobin, enoxastrobin, pyraoxystrobin, pyrametostrobin, triclopiricarb, dimoxystrobin, and phenaminestrobin.
  • the QiI fungicide is at least one selected from the group consisting of florylpicoxamide, methallylpicoxamide, cyazofamid, amisulbrom, and fenpicoxamide, [1]-[3] Disease control agent according to any one of the above.
  • the SDHI fungicide is pyrapropoin, isoflucipram, mepronil, flutolanil, fluopyram, benzovindiflupyr, bixafen, fluindapyr, fluxapyroxad, furametpyr, impylfluxam, isopyrazam, penflufen, sedaxane, pidiflu At least one selected from the group consisting of methofen, pyraziflumide, thifluzamide, boscalid, penthiopyrad, benodanil, isofetamide, cyclobutriflulam, fenfuram, carboxin, oxycarboxin, and fluindapyr [1] to [5 ]
  • the disease control agent according to any one of the above.
  • the complex I-NADH oxidoreductase agent is at least one selected from the group consisting of diflumetrim, tolfenpyrad, and fenazaquin. .
  • the oxidative phosphorylation/ATP synthase inhibitor is at least one organotin selected from the group consisting of triphenyltin acetate, triphenyltin chloride, and triphenyltin hydroxide. 1] The disease control agent according to any one of [8].
  • the disease control agent according to any one of [1] to [9], wherein the other respiratory inhibitor is silthiofam.
  • the plant is at least one selected from the group consisting of bindweed plants, gramineous plants, ginger plants, cruciferous plants, solanaceous plants, and Umbelliferous plants, [1] to [10] ] The disease control agent according to any one of the above.
  • the disease is sweet potato root rot, sugarcane black rot, ginger white star disease, radish fissure browning, radish white rust, potato summer plague, potato black bruise, or carrot root rot.
  • the disease control agent according to any one of [11].
  • Plant disease control comprising a step of spraying an effective amount of a plant disease control agent comprising as an active ingredient at least one selected from the group consisting of respiration inhibitors to the soil in which the plant grows, and then mixing the agent.
  • a method, wherein the disease is Diaporthe destruens , Alternaria solani , Rhizoctonia solani , Phyllosticta zingiberis , Ceratocystis paradoxa A method for controlling a disease caused by at least one species selected from the group consisting of Ceratocystis paradoxa and Albugo macrospora .
  • the QoI fungicide is trifloxystrobin, azoxystrobin, fluphenoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, metminostrobin, orysastrobin, fluoxastrobin, fenamidone, pyribencarb , methyltetraprole, famoxadone, pyraclostrobin, commoxystrobin, enoxastrobin, pyraoxystrobin, pyrametostrobin, triclopiricarb, dimoxystrobin, and phenaminestrobin.
  • the disease control method according to [13] which is 1 type.
  • the QiI fungicide is at least one selected from the group consisting of florylpicoxamide, methallylpicoxamide, cyazofamid, amisulbrom, and fenpicoxamide, [13] or [14] The disease control method described in . [16] Any one of [13] to [15], wherein the oxidative phosphorylation inhibitor is at least one selected from the group consisting of ferimzone, fluazinam, binapacryl, meptyldinocap, and dinocap. disease control method.
  • the SDHI fungicide is pyrapropoin, isoflurcipram, mepronil, flutolanil, fluopyram, benzovindiflupyr, bixafen, fluindapyr, fluxapyroxad, furametpyr, impylfluxam, isopyrazam, penflufen, sedaxane, pidiflu At least one selected from the group consisting of methofen, pyraziflumide, thifluzamide, boscalid, penthiopyrad, benodanil, isofetamide, cyclobutriflulam, fenfuram, carboxin, oxycarboxin, and fluindapyr [13]-[16 ]
  • the disease control method according to any one of the above.
  • [21] The method for controlling disease according to any one of [13] to [20], wherein the other respiratory inhibitor is silthiofam.
  • the step is a step of spraying the disease control agent on the growth soil on the day to four weeks before planting the plant seedlings, and then mixing.
  • the disease control method described in [23] The method for controlling a disease according to any one of [13] to [22], wherein the step is a step of applying the disease control agent to the growing soil once to three times and then mixing the agent.
  • the plant is at least one selected from the group consisting of bindweed plants, gramineous plants, ginger plants, cruciferous plants, solanaceous plants, and Umbelliferous plants, [13] to [23] ]
  • the disease control method according to any one of the above.
  • the disease is sweet potato root rot, sugarcane black rot, ginger white star disease, radish fissure browning, radish white rust, potato summer plague, potato black bruise, or carrot root rot. ] to [24].
  • a soil-mixable plant disease control agent comprising, as an active ingredient, a QoI fungicide having a soil half-life equal to or less than a preset threshold, A disease control agent, wherein the disease is a disease caused by a filamentous fungus.
  • a QoI fungicide having a soil half-life equal to or less than a preset threshold
  • a disease control agent wherein the disease is a disease caused by a filamentous fungus.
  • the disease control agent according to [26] wherein the threshold is 100 days.
  • the QoI fungicide is trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, orysastrobin, fluoxastrobin, fenamidone, famoxadone, and pyraclostrobin;
  • the disease control according to any one of [26] to [30], wherein the amount of the disease control agent used is 500 (g ai/ha) or more and 4000 (g ai/ha) or less as a QoI fungicide. agent.
  • the plant is at least one selected from the group consisting of bindweed plants, gramineous plants, ginger plants, cruciferous plants, solanaceous plants, and Umbelliferous plants, [26] to [31] ]
  • the disease control agent according to any one of the above.
  • the filamentous fungus is Diaporthe destruens, Alternaria solani, Rhizoctonia solani, Phyllosticta zingiberis, Ceratocystis paradoxa ( The disease control agent according to any one of [26] to [32], which is at least one selected from the group consisting of Ceratocystis paradoxa) and Albugo macrospora.
  • the disease is sweet potato root rot, sugarcane black rot, ginger white star disease, radish fissure browning, radish white rust, potato summer plague, potato black bruise, or carrot root rot.
  • the disease control agent according to any one of [33].
  • a plant disease control method A method for controlling a disease, wherein the disease is a disease caused by a filamentous fungus.
  • the QoI fungicide is trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, orysastrobin, fluoxastrobin, fenamidone, famoxadone, and pyraclostrobin;
  • the plant is at least one selected from the group consisting of bindweed plants, gramineous plants, ginger plants, cruciferous plants, solanaceous plants, and Umbelliferous plants, [35] to [42] ]
  • the disease control method according to any one of the above.
  • the filamentous fungus is Diaporthe destruens, Alternaria solani, Rhizoctonia solani, Phyllosticta zingiberis, Ceratocystis paradoxa ( Ceratocystis paradoxa), and Albugo macrospora (Albugo macrospora), the disease control method according to any one of [35] to [43].
  • the disease is sweet potato root rot, sugarcane black rot, ginger white star disease, radish fissure browning, radish white rust, potato summer plague, potato black bruise, or carrot root rot. ] to [44].
  • a QoI fungicide having a soil half-life below a preset threshold in the manufacture of a plant disease control agent for soil incorporation, comprising: Use wherein the disease is a disease caused by filamentous fungi.
  • the use of [46], wherein the threshold is 100 days.
  • the use of [46] or [47], wherein the threshold is 60 days.
  • the QoI fungicide is trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, orysastrobin, fluoxastrobin, fenamidone, famoxadone, and pyraclostrobin;
  • the plant is at least one selected from the group consisting of bindweed plants, gramineous plants, ginger plants, cruciferous plants, solanaceous plants, and Umbelliferous plants, [46] to [51] ]
  • the filamentous fungus is Diaporthe destruens, Alternaria solani, Rhizoctonia solani, Phyllosticta zingiberis, Ceratocystis paradoxa ( Ceratocystis paradoxa), and Albugo macrospora (Albugo macrospora) is at least one selected from the group consisting of [46] to [52].
  • the disease is sweet potato root rot, sugarcane black rot, ginger white star disease, radish fissure brown
  • Test 1 against sweet potato root rot A test was conducted in this field (Kanoya City, Kagoshima Prefecture) where sweet potato was cultivated in the previous year and sweet potato root rot occurred frequently. More specifically, the type of sweet potato is Kogane Sengan, and 18 m 2 of seedlings are planted per plot (18 m 2 /plot). The test procedure is shown below.
  • Step 1 Flint (registered trademark) Floble 25 (manufactured by Bayer CropScience, trifloxystrobin 25.0%) was diluted 250-fold, 125-fold and 10-fold to prepare disease control agents.
  • the prepared disease control agent is applied in an amount such that the application amount is 100 (L / 10a), 50 (L / 10a), 4 (L / 10a) (all effective amounts are 1085 (g ai / ha)) of sweet potato After spraying on the growing soil, it was mixed. Sweet potato seedlings were planted on the day of mixing. A watering can was used for the test with a spray amount of 100 (L/10a) and 50 (L/10a), and a hand spray was used for the test with a spray amount of 4 (L/10a).
  • Step 2 A disease control agent was prepared by diluting a mixture of trifloxystrobin (250 g/L) and fluopyram (250 g/L) 250 times. The prepared disease control agent was applied to sweet potato-growing soil in an amount such that the application amount was 100 (L/10a) (each effective amount was 1000 (g ai/ha)) using a watering can, and then mixed. Sweet potato seedlings were planted the day after mixing.
  • Step 3 As a control agent for this test, the seedlings were immersed for 30 minutes in a 500-fold diluted Benlate wettable powder (Benomyl 50.0%) and planted in untreated soil.
  • Benlate wettable powder Benomyl 50.0%
  • Step 4 As a comparative sample, seedlings without any treatment were planted in untreated soil.
  • Fig. 1 shows a chart showing changes in the incidence of sweet potato root rot from the planting date of sweet potato seedlings to about 3 months. , 75 days later, the degree of damage of each sweet potato root rot is shown in FIG. Control values are shown in FIG.
  • the untreated seedlings began to develop sweet potato root rot after about one month, and after about two months, a diseased strain rate of 50% or more was observed.
  • the control agent benlate wettable powder (benomyl 50.0%) is diluted 500 times, and the seedlings soaked for 30 minutes are untreated.
  • the rate of diseased strains was equal to or lower than that when planted in the soil of
  • the control agent benlate wettable powder (benomyl 50.0%) was diluted 500 times, and the seedlings were treated for 30 minutes.
  • the degree of damage and control value were the same as or lower than when the immersed seedlings were planted in untreated soil.
  • sweet potato root rot was remarkably controlled when the amount of the disease control agent applied was 4 (L/10a), although the effective amount of the active ingredient was the same.
  • Test 2 against sweet potato root rot A test was conducted in this field (Okinawa Prefecture) where sweet potato was cultivated in the previous year and sweet potato root rot occurred frequently. More specifically, the type of sweet potato is Chura Koi Koi, and seedlings are planted at 9 m 2 per plot (9 m 2 /plot). The test procedure is shown below.
  • Step 1 Flint (registered trademark) Floble 25 (trifloxystrobin 25.0%) was diluted 250 times, 125 times and 10 times to prepare disease control agents.
  • the prepared disease control agent is applied in an amount such that the application amount is 100 (L / 10a), 50 (L / 10a), 4 (L / 10a) (all effective amounts are 1085 (g ai / ha)) of sweet potato After spraying on the growing soil, it was mixed. Sweet potato seedlings were planted on the day of mixing. Tests with spraying amounts of 100 (L/10a) and 50 (L/10a) were sprayed using a pressurized automatic sprayer, and test 4 (L/10a) was sprayed using a hand spray.
  • Step 2 As a comparative sample, seedlings without any treatment were planted in untreated soil.
  • FIG. 4 shows a chart showing the change in the incidence of sweet potato root rot from the planting date of sweet potato seedlings to about 5 months.
  • FIG. 5 shows a graph showing the respective control values against sweet potato root rot.
  • sweet potato root rot began to appear rapidly in the comparative sample after about one month, and after about five months, a diseased strain rate of nearly 80% was observed.
  • the seedlings were planted in the soil treated with the disease control agent, a significant reduction in diseased strain rate was observed compared to the comparative sample.
  • sweet potato root rot could be remarkably controlled up to 5 months after planting.
  • the amount of trifloxystrobin remaining in the sweet potato seedlings was measured by a known method 154 days after the planting date, no trifloxystrobin was detected.
  • Test 3 against sweet potato root rot
  • sweet potato was cultivated in the previous year and sweet potato root rot occurred at a low frequency. More specifically, the type of sweet potato is Kogane Sengan, and 45 m 2 of seedlings are planted per plot (45 m 2 /plot). The test procedure is shown below.
  • Step 1 A disease control agent was prepared by diluting a mixture of trifloxystrobin (250 g/L) and fluopyram (250 g/L) 250 times.
  • the prepared disease control agent is applied in an amount that makes the application amount 1000 (L / 10a) (effective amount is 1000 (g ai / ha) each) on the sweet potato growing soil using a rechargeable backpack sprayer, and then mixed. bottom. Sweet potato seedlings were planted the day after mixing.
  • Step 2 As a comparative sample, seedlings without any treatment were planted in untreated soil.
  • Fig. 6 shows a chart showing changes in the rate of sweet potato root rot diseased from the planting date of sweet potato seedlings to 76 days after planting.
  • FIG. 7 shows a graph showing the number of diseased stems of .
  • a disease control agent was prepared by diluting Flint (registered trademark) Flowble 25 (trifloxystrobin 25.0%) 250 times.
  • the prepared disease control agent was sprayed in an amount of 100 (L/10a) (1000 (g a.i./ha) as the amount of trifloxystrobin) on growing soil of ginger (variety: large ginger) using a watering can. After that, the soil after spraying was mixed. On the same day that the soil was mixed, seed potatoes of large ginger were planted (sections treated with a disease control agent).
  • Daconil 1000 registered trademark
  • tetrachloroinsophthalonitrile 40.0% tetrachloroinsophthalonitrile 40.0%
  • 300 (L/10a) each time was sprayed around the growing point of large ginger using a backpack-type electric sprayer (section treated with control agent).
  • Severity [ ⁇ (number of leaves with disease index 0 ⁇ 0) + (number of leaves with disease index 1 ⁇ 1) + (number of leaves with disease index 2 ⁇ 2) + (number of leaves with disease index 3 ⁇ 3) + (disease index 4 number of leaves ⁇ 4) ⁇ / ⁇ total number of leaves surveyed (240) ⁇ 4 ⁇ ] ⁇ 100
  • control value was calculated using the following formula.
  • Control value (%) [1- ⁇ (Disease rate in plot treated with disease control agent (or control agent))/(Disease rate in untreated plot) ⁇ ] ⁇ 100
  • a disease control agent was prepared by diluting Flint (registered trademark) Flowble 25 (trifloxystrobin 25.0%) 250 times.
  • the prepared disease control agent was applied in an amount of 100 (L/10a) (1000 (g a.i./ha) as the amount of trifloxystrobin) on the growing soil of potatoes (cultivar: Dejima) using a backpack-type electric sprayer. After spraying, the soil after spraying was mixed. On the same day that the soil was mixed, seed potatoes of Dejima were planted (sections treated with a disease control agent).
  • Froncide SC Froncide SC
  • Dejima seed potatoes were planted in untreated soil (untreated plot).
  • Severity [ ⁇ (number of leaves with disease index 0 ⁇ 0) + (number of leaves with disease index 1 ⁇ 1) + (number of leaves with disease index 2 ⁇ 2) + (number of leaves with disease index 3 ⁇ 3) + (disease index 4 number of leaves ⁇ 4) ⁇ / ⁇ total number of leaves surveyed (240) ⁇ 4 ⁇ ] ⁇ 100
  • control value was calculated using the following formula.
  • Control value (%) [1- ⁇ (Disease rate in plot treated with disease control agent (or control agent))/(Disease rate in untreated plot) ⁇ ] ⁇ 100
  • a disease control agent was prepared by diluting Flint (registered trademark) Flowble 25 (trifloxystrobin 25.0%) 250 times.
  • the prepared disease control agent was applied in an amount of 100 (L/10a) (1000 (g a.i./ha) as the amount of trifloxystrobin), and a backpack-type manual sprayer was applied to the growing soil of sugarcane (variety: KN00-114). After spraying using, the soil after spraying was mixed. KN00-114 was planted (control agent treated plots) on the same day that the soil was mixed.
  • KN00-114 seedlings were planted in untreated soil (untreated plot).
  • the non-germination rate (percentage of strains that did not germinate relative to the number of strains investigated) was calculated.
  • control value was calculated using the following formula.
  • Control value (%) [1- ⁇ (non-germination rate in section treated with disease control agent)/(non-germination rate in non-treated section) ⁇ ] ⁇ 100
  • a disease control agent was prepared by diluting Flint (registered trademark) Flowble 25 (trifloxystrobin 25.0%) 250 times.
  • the prepared disease control agent was sprayed in an amount of 100 (L/10a) (1000 (g a.i./ha) as the amount of trifloxystrobin) on the growth soil of Yumeyo using a backpack-type battery-powered sprayer. After that, the soil after spraying was mixed. On the same day that the soil was mixed, Muyoko was sown (plot treated with disease control agent).
  • Froncide SC Froncide SC
  • the prepared control agent was applied in an amount of 100 (L/10a) to growing soil of Japanese radish (cultivar: Yumeyoko) using a backpack-type battery-powered sprayer, and the soil after application was mixed. On the same day that the soil was mixed, Muyuko was sown (control agent-treated plot).
  • Muyoko was sown in untreated soil (untreated plot).
  • Severity [ ⁇ (number of strains with disease index 0 x 0) + (number of strains with disease index 1 x 1) + (number of strains with disease index 3 x 3) + (number of strains with disease index 5 x 5) ⁇ /(total number of surveyed strains x 5) ] x 100
  • control value was calculated using the following formula.
  • Control value (%) [1- ⁇ (Disease rate in plot treated with disease control agent (or control agent))/(Disease rate in untreated plot) ⁇ ] ⁇ 100
  • the disease control agent of the present invention is considered to be able to control diseases caused by filamentous fungi, regardless of the soil half-life of the active ingredient, when used for mixing with soil, for example.
  • the active ingredient is not bound by this theory, but the amount of the active ingredient that is unacceptable for pesticides does not affect the plant body. Since it is decomposed in the soil environment before it is taken up, it is thought that it will be possible to apply a high dose, which has been difficult to apply in the past, from the viewpoint of the amount of residual pesticide in the plant body.
  • Reaction rate (%) ⁇ 1-(mycelial elongation (mm) in the treatment area of each concentration / mycelial elongation (mm) in the untreated area (0 ppm)) ⁇ ⁇ 100
  • trifloxystrobin, azoxystrobin or fluopyram were used, they significantly inhibited hyphal elongation (EC 50 of 0.00042, 0.00921 or 8, respectively). .03 ppm).
  • hyphal elongation of Distillery root rot strains was significantly reduced compared to when SDHI fungicide fluopyram was used, even at low concentrations. inhibited.
  • trifloxystrobin inhibited hyphal elongation of the Rhizoma strain at a lower concentration than azoxystrobin.
  • QOI fungicides preferably trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, cresoxime methyl, orysastrobin, fluoxastrobin, fenamidone, famoxadone, or pyraclostrobin, more preferably , trifloxystrobin, azoxystrobin, picoxystrobin, mandestrobin, or pyraclostrobin, more preferably trifloxystrobin or azoxystrobin, even more preferably trifloxystrobin) is , compared with other drugs, it was thought to show a marked effect on diseases (especially, sweet potato root rot) caused by Diaporthe destruens.

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  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

La présente invention concerne un nouvel agent de lutte contre des maladies qui peut être appliqué en une quantité suffisante pour inhiber l'émergence de champignons résistants tout en ne provoquant pas de résidu de principe actif sur les plantes, et qui peut lutter de manière importante contre des maladies des végétaux. Plus précisément, la présente invention concerne un agent de lutte contre des maladies des végétaux à mélanger avec le sol, ledit agent de lutte contre des maladies comprenant, en tant que principe actif, un fongicide QoI ayant une demi-vie dans le sol équivalente ou inférieure à un seuil prédéfini, la maladie étant provoquée par un champignon filamenteux.
PCT/JP2022/047806 2021-12-27 2022-12-26 Agent de lutte contre des maladies et méthode de lutte contre des maladies WO2023127767A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011246453A (ja) * 2010-04-28 2011-12-08 Sumitomo Chemical Co Ltd 植物病害防除組成物およびその用途
WO2014029697A1 (fr) * 2012-08-22 2014-02-27 Basf Se Mélanges ternaires fongicides comprenant du fluaziname
CN110384104A (zh) * 2018-04-19 2019-10-29 江苏龙灯化学有限公司 一种杀菌组合物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011246453A (ja) * 2010-04-28 2011-12-08 Sumitomo Chemical Co Ltd 植物病害防除組成物およびその用途
WO2014029697A1 (fr) * 2012-08-22 2014-02-27 Basf Se Mélanges ternaires fongicides comprenant du fluaziname
CN110384104A (zh) * 2018-04-19 2019-10-29 江苏龙灯化学有限公司 一种杀菌组合物

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PRUDNIKOVA SVETLANA; STRELTSOVA NADEZHDA; VOLOVA TATIANA: "The effect of the pesticide delivery method on the microbial community of field soil", ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, SPRINGER BERLIN HEIDELBERG, BERLIN/HEIDELBERG, vol. 28, no. 7, 1 January 1900 (1900-01-01), Berlin/Heidelberg, pages 8681 - 8697, XP037355046, ISSN: 0944-1344, DOI: 10.1007/s11356-020-11228-7 *

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