WO2017026524A1 - 植物病害防除組成物及び植物病害防除方法 - Google Patents
植物病害防除組成物及び植物病害防除方法 Download PDFInfo
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- WO2017026524A1 WO2017026524A1 PCT/JP2016/073633 JP2016073633W WO2017026524A1 WO 2017026524 A1 WO2017026524 A1 WO 2017026524A1 JP 2016073633 W JP2016073633 W JP 2016073633W WO 2017026524 A1 WO2017026524 A1 WO 2017026524A1
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- present compound
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- 0 Cc(nn1)c(-c2ccccc2)c(-c(c(F)cc(*)c2)c2F)c1Cl Chemical compound Cc(nn1)c(-c2ccccc2)c(-c(c(F)cc(*)c2)c2F)c1Cl 0.000 description 2
Classifications
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/58—1,2-Diazines; Hydrogenated 1,2-diazines
-
- 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
-
- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles
-
- 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
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
Definitions
- the present invention relates to a plant disease control composition and a plant disease control method.
- Patent Documents 1 and 2 Conventionally, many compounds are known as active ingredients of plant disease control compositions (see, for example, Patent Documents 1 and 2).
- An object of the present invention is to provide a composition having an excellent control effect against plant diseases and a method for controlling plant diseases.
- the present inventors have found a pyridazine compound represented by the following formula (1) and an azole represented by the following formula (2). It has been found that a composition containing a compound has an excellent control effect against plant diseases. That is, the present invention is as follows. [1] The following formula (1) [Where, X represents a fluorine atom or a hydrogen atom.
- a pyridazine compound represented by Following formula (2) [Where, R 1 represents a C1-C6 alkyl group, R 2 represents a hydrogen atom, a C1-C3 alkyl group, a C2-C3 alkenyl group or a C2-C3 alkynyl group, A represents a nitrogen atom or a methine group, Y 1 represents a halogen atom, and n represents 0 or 1. ]
- the compound represented by the formula (2) is The following formula (2a) [Where, Y 2 represents a chlorine atom, a fluorine atom or a hydrogen atom.
- the compound represented by the formula (2a) is In the formula (2a), Y 2 is a compound having a chlorine atom,
- the compound represented by the formula (1) is: In the formula (1), X is a hydrogen atom, [1]
- the weight ratio of the compound represented by the formula (1) and the compound represented by the formula (2) is in the range of 1: 0.0125 to 1: 500.
- [6] The following formula (1) [Where, X represents a fluorine atom or a hydrogen atom.
- a pyridazine compound represented by Following formula (2) [Where, R 1 represents a C1-C6 alkyl group, R 2 represents a hydrogen atom, a C1-C3 alkyl group, a C2-C3 alkenyl group or a C2-C3 alkynyl group, A represents a nitrogen atom or a methine group, Y 1 represents a halogen atom, and n represents 0 or 1. ]
- the plant disease control method including the process of processing the effective amount with the azole compound shown by the plant or the soil which grows a plant.
- the pest control method according to [6] wherein the step of treating the plant or the soil where the plant is cultivated is a step of treating the seed.
- plant diseases can be controlled.
- the plant disease control composition of the present invention (hereinafter referred to as the present composition) is represented by the pyridazine compound represented by the formula (1) (hereinafter referred to as the present compound 1) and the formula (2).
- Azole compound (hereinafter referred to as the present compound 2).
- C1 to C3 means that the number of carbon atoms is 1 to 3.
- the halogen atom represents a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- the C1-C6 alkyl group means a linear or branched saturated hydrocarbon group having 1 to 6 carbon atoms, for example, a methyl group, an ethyl group, a propyl group, an isopropyl group. Butyl group, isobutyl group, sec-butyl group, tert-butyl group, pentyl group, neopentyl group, hexyl group and the like.
- the C1-C3 alkyl group means a linear or branched saturated hydrocarbon group having 1 to 3 carbon atoms, such as a methyl group, an ethyl group, a propyl group, and An isopropyl group is mentioned.
- the C2-C3 alkenyl group means a linear or branched unsaturated hydrocarbon group having 2 to 3 carbon atoms, such as a vinyl group, 1-propenyl group, isopropenyl group. Group, and 2-propenyl group.
- the C2-C3 alkynyl group means a straight-chain unsaturated hydrocarbon group having 2 to 3 carbon atoms, and examples thereof include an ethynyl group, a 1-propynyl group, and a 2-propynyl group. Can be mentioned.
- the present compound 1 is, for example, a compound described in International Publication No. 2012/020772, and can be produced by the method described therein.
- Examples of the present compound 1 include compounds shown in Table 1.
- R 1 in the formula (2) is preferably a C1-C4 alkyl group, more preferably a methyl group or an ethyl group, and even more preferably a methyl group.
- R 2 in the formula (2) is preferably a hydrogen atom, a methyl group, an ethyl group or a propyl group, and more preferably a methyl group.
- the bonding position of Y 1 is not limited, but is preferably a position that becomes a 4-substituted benzyl group.
- This compound 2 is described in, for example, International Publication No. 2012/169516. This compound 2 can be manufactured by a well-known method.
- a compound wherein Y 2 is a chlorine atom in the formula (2a) (hereinafter referred to as the present compound 2-1).
- a compound wherein Y 2 is a fluorine atom (hereinafter referred to as the present compound 2-2).
- a compound wherein Y 2 is a hydrogen atom (hereinafter referred to as the present compound 2-3).
- this compound 2 includes enantiomers and diastereomers based on the configuration of the organic group bonded to the cyclopentane ring. Therefore, the present compound 2 may be any of those containing these isomers alone and those containing each isomer in an arbitrary ratio (for example, a racemic mixture or a diastereomeric mixture). Among these, the present compound 2 in which the hydroxy group bonded to the cyclopentane ring and —R 1 are in cis form is preferred, and the hydroxy group bonded to the cyclopentane ring and —R 1 is a substituted or unsubstituted benzyl group. More preferred is Compound 2 wherein and are cis. Specific examples of optical isomers present in Compound 2 are shown in Tables 2 to 4.
- the weight ratio of the present compound 1 to the present compound 2 in the composition of the present invention is usually 1: 0.0125 to 1: 500, preferably 1: 0.025 to 1: 100, more preferably 1: 0.1. ⁇ 1: 10.
- the composition of the present invention may be a mixture of the present compound 1 and the present compound 2 itself.
- the composition of the present invention is usually prepared by mixing the present compound 1, the present compound 2 and an inert carrier, and if necessary, surface active. It is a preparation that is formulated into oils, emulsions, flowables, wettable powders, granular wettable powders, powders, granules, etc. with the addition of agents and other formulation adjuvants. Such a preparation can be used as a plant disease control agent as it is or with addition of other inactive ingredients.
- the total amount of Compound 1 and Compound 2 is usually 0.1 to 99% by weight, preferably 0.2 to 90% by weight, more preferably 1 to 80% by weight. .
- Examples of the inert carrier used in the preparation include a solid carrier and a liquid carrier.
- Examples of the solid carrier include kaolin clay, attapulgite clay, bentonite, montmorillonite, acid clay, pyrophyllite, talc, and diatomaceous earth. Fine powder or granular materials made of minerals such as calcite, natural organic materials such as corn cob flour and walnut shell flour, synthetic organic materials such as urea, salts such as calcium carbonate and ammonium sulfate, and synthetic inorganic materials such as synthetic silicon hydroxide. Can be mentioned.
- liquid carrier examples include aromatic hydrocarbons such as xylene, alkylbenzene, and methylnaphthalene, alcohols such as 2-propanol, ethylene glycol, propylene glycol, and ethylene glycol monoethyl ether, and ketones such as acetone, cyclohexanone, and isophorone.
- aromatic hydrocarbons such as xylene, alkylbenzene, and methylnaphthalene
- alcohols such as 2-propanol, ethylene glycol, propylene glycol, and ethylene glycol monoethyl ether
- ketones such as acetone, cyclohexanone, and isophorone.
- Vegetable oils such as soybean oil and cottonseed oil, petroleum aliphatic hydrocarbons, esters, dimethyl sulfoxide, acetonitrile, and water.
- surfactants include anionic interfaces such as alkyl sulfate esters, alkylaryl sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkylaryl ether phosphate esters, lignin sulfonates, naphthalene sulfonate formaldehyde polycondensates, and the like.
- Activators, and nonionic surfactants such as polyoxyethylene alkyl aryl ethers, polyoxyethylene alkyl polyoxypropylene block copolymers, sorbitan fatty acid esters, and cationic surfactants such as alkyltrimethylammonium salts.
- formulation adjuvants include, for example, water-soluble polymers such as polyvinyl alcohol and polyvinylpyrrolidone, gum arabic, alginic acid and its salts, polysaccharides such as CMC (carboxymethyl cellulose) and xanthan gum, aluminum magnesium silicate, alumina sol Inorganic substances such as antiseptics, colorants, and stabilizers such as PAP (isopropyl acid phosphate) and BHT (2,6-di-tert-butyl-4-methylphenol).
- water-soluble polymers such as polyvinyl alcohol and polyvinylpyrrolidone
- gum arabic alginic acid and its salts
- polysaccharides such as CMC (carboxymethyl cellulose) and xanthan gum
- aluminum magnesium silicate such as aluminum magnesium silicate
- alumina sol Inorganic substances such as antiseptics, colorants, and stabilizers
- PAP isopropyl acid phosphate
- BHT 2,6-d
- composition of the present invention is also prepared by formulating the present compound 1 and the present compound 2 by the above-described methods, and then diluting with water as necessary to mix the respective formulations or their diluted solutions. You can also
- composition of the present invention may further contain one or more other fungicides and / or insecticides.
- the plant disease can be controlled by treating the composition of the present invention on the plant or the soil where the plant is cultivated.
- Rice diseases rice blast (Magnaporthe grisea), sesame leaf blight (Cochliobolus miyabeanus), blight (Rhizoctonia solani), idiotic seedling (Gibberella fujikuruoi).
- Diseases of wheat powdery mildew (Erysiphe graminis), red mold (Fusarium graminearum, F. avenaceum, F. culmorum, Microdochium nivale), rust (for example, yellow rust (Pucciri scab)) graminis), red rust (P.
- Ustilago nuda avenaceum, F. culmorum, Microdochium derivi, black punishment
- Ustilago nuda cloud disease (Rhynchosporium secalis), reticular disease (Pyrenophora teres), spot disease (Cochliobolus sativus), leafy leaf disease (Pyrenophora graminea), and Rhizonia a.
- Black spot disease Alternaria alternata Japan pearpathotype
- Red star disease Giantaria haraeumum
- Peach diseases Monilinia fracticola, black scab (Cladosporium carpophilum), Phomopsis spoilage (Phomopsis sp.).
- Grape diseases black scab (Elsinoe ampelina), late rot (Glomerella cinulata), powdery mildew (Uncinula apelopidais), black rot (Gikonivaladi) .
- Oyster diseases Anthracnose (Gloeosporium kaki), deciduous leaf disease (Cercospora kaki, Mycosphaerella nawae).
- Diseases of cucurbits Anthracnose (Colletotrichum lagenarium), powdery mildew (Sphaerotheca furiginea), vine blight (Mycosphaerella meloniis), vine scab (Fusarium oxysporum), por disease (fusarium oxysporum) ), Seedling blight (Pythium sp.).
- Diseases of tomato Alternaria solani, leaf mold (Cladosporium fulvum), plague (Phytophthora infestans).
- Pea disease powdery mildew (Erysiphe pisi). Potato diseases: Alternaria solani, Phytophthora infestans, Sputum rot septica, Spongosporia subteranean f.
- Strawberry disease powdery mildew (Sphaerotheca humuli), anthracnose (Glomerella singulata). Tea diseases: net blast (Exobasidium reticulatum), white scab (Elsinoe leucospila), ring spot disease (Pestarotropis sp.), Anthracnose (Colletotrichum theae-sinensis).
- Tobacco disease Alternaria longipes, powdery mildew (Erysiphe cichoracearum), anthracnose (Colletotrichum tabacum), downy mildew (Peronospora tabacina), epidemic (Phytophyti. Rapeseed diseases: Sclerotinia sclerotiorum, Rhizoctonia solani, and Rhizoctonia solani. Cotton disease; Rhizoctonia solani caused by Rhizoctonia spp. Diseases of sugar beet: brown spot disease (Cercospora beticola), leaf rot (Thanatephorus cucumeris), root rot (Thanatephorus cucumeris), black root disease (Aphanomyces cochlioides).
- Rose diseases black spot (Diplocarpon rosae), powdery mildew (Sphaerotheca pannosa), downy mildew (Peronospora sparsa).
- Diseases of chrysanthemum and asteraceae vegetables downy mildew (Bremia lactucae), brown spot disease (Septoria chrysanthemi-indici), white rust (Puccinia horiana).
- Diseases of various crops Diseases caused by Pythium spp.
- Aspergillus genus Penicillium genus, Fusarium genus, Gibberella genus, Tricoderder genus, Thielaviopsis genus, Rhizopus genus, Mucor genus, Corticium genus, Poma genus, Rhizoctonia genus Disease. Viral diseases of various crops mediated by Polymixa genus or Olpidium genus.
- plants that can use the composition of the present invention include, but are not limited to, the following plants.
- Agricultural crops corn, rice, wheat, barley, rye, oat, sorghum, cotton, soybean, adzuki beans, kidney beans, peanuts, buckwheat, sugar beet, rapeseed, sunflower, sugarcane, tobacco, etc.
- Vegetables Eggplant vegetables (eggplant, tomatoes, peppers, peppers, potatoes, etc.), cucurbits vegetables (cucumbers, pumpkins, zucchini, watermelon, melon, squash, etc.), cruciferous vegetables (radish, turnip, horseradish, kohlrabi, Chinese cabbage) , Cabbage, mustard, broccoli, cauliflower, etc.), asteraceae vegetables (burdock, garlic, artichoke, lettuce, etc.), liliaceae vegetables (leek, onion, garlic, asparagus), celery family vegetables (carrot, parsley, celery, USA) Bowfish, etc.), red crustacean vegetables (spinach, chard, etc.), perilla vegetables (perilla, mint, basil, etc.), strawberries, sweet potatoes, yam, taros, etc.
- Trees other than fruit trees Cha, mulberry, flowering trees, street trees (ash, birch, dogwood, eucalyptus, ginkgo, lilac, maple, oak, poplar, redwood, fu, sycamore, zelkova, black bean, peach tree, Tsuga, rat, pine, Spruce, yew) etc.
- the above-mentioned plant may be a plant imparted with resistance by genetic recombination technology.
- composition of the present invention examples include the following.
- composition of the present invention in which the combination of Compound 1 and Compound 2 is the following combination: A combination of the present compound 1-1 and the present compound 2-1. A combination of the present compound 1-1 and the present compound 2-2; A combination of the present compound 1-1 and the present compound 2-3; A combination of the present compound 1-1 and the present compound 2-4; A combination of the present compound 1-1 and the present compound 2-5; A combination of the present compound 1-1 and the present compound 2-6; A combination of the present compound 1-1 and the present compound 2-7; A combination of the present compound 1-1 and the present compound 2-8; A combination of the present compound 1-1 and the present compound 2-9; A combination of the present compound 1-1 and the present compound 2-10; A combination of the present compound 1-1 and the present compound 2-11; A combination of the present compound 1-1 and the present compound 2-12; A combination of the present compound 1-1 and the present compound 2-13; A combination of the present compound 1-1 and the present compound 2-14; A combination of the present compound 1-1 and the present compound 2-15; A combination of the present compound 1-1
- the plant disease control method of the present invention (hereinafter referred to as the present invention control method) is carried out by treating an effective amount of the present compound 1 and the present compound 2 on the plant or the soil where the plant is cultivated.
- Such plants include, for example, plant foliage, plant seeds and plant bulbs.
- a bulb means here a bulb, a bulb, a rhizome, a tuber, a tuberous root, and a root support body.
- the present compound 1 and the present compound 2 may be treated separately in the same period on the plant or the soil where the plant is cultivated, but usually from the viewpoint of simplicity during the treatment, It is processed.
- examples of the treatment method of the present compound 1 and the present compound 2 include foliage treatment, soil treatment, root treatment and seed treatment.
- foliage treatment examples include a method of treating the surface of a plant being cultivated by foliage spraying and tree trunk spraying.
- soil treatment include soil application, soil mixing, and chemical irrigation into soil.
- root treatment for example, a method of immersing the whole plant or root in a chemical solution containing the present compound 1 and the present compound 2, and a solid preparation comprising the present compound 1, the present compound 2 and a solid carrier The method of attaching to the root part of a plant is mentioned.
- Such seed treatment includes, for example, treatment of the seed or bulb of a plant to be protected from plant diseases, and specifically, for example, seeding the suspension of the composition of the present invention in the form of a mist Spraying treatment on the surface or the surface of the bulb, adding a small amount of water to the wettable powder, emulsion or flowable of the composition of the present invention, or applying it to the seed or bulb as it is, Examples include immersion treatment in which seeds are immersed in a solution for a certain period of time, film coating treatment, and pellet coating treatment.
- the treatment amount of the present compound 1 and the present compound 2 is the kind of plant to be treated, the kind and occurrence frequency of the plant disease to be controlled, the preparation form, the treatment time, the treatment method, the treatment place, the weather Depending on the conditions, etc., when treated on the foliage of plants or on the soil cultivating plants, the total amount of Compound 1 and Compound 2 is usually 1 to 500 g per 1000 m 2 , preferably The amount is 2 to 200 g, more preferably 10 to 100 g.
- the amount of Compound 1 and Compound 2 treated in the seed treatment is the total amount of Compound 1 and Compound 2, and is usually 0.001 to 10 g, preferably 0.01 to 1 g per kg of seed. It is.
- Emulsions, wettable powders, flowables and the like are usually treated by diluting with water and spraying.
- the concentration of Compound 1 and Compound 2 is the total concentration of Compound 1 and Compound 2, and is usually 0.0005 to 2% by weight, preferably 0.005 to 1% by weight. Powders, granules, etc. are usually processed without dilution.
- Formulation Example 1 5 parts of the present compound 1-1, 5 parts of any one of the present compounds 2-1 to 2-27, 35 parts of a mixture of white carbon and polyoxyethylene alkyl ether sulfate ammonium salt (weight ratio 1: 1) And 55 parts of water are mixed and pulverized by a wet pulverization method to obtain a flowable preparation.
- Formulation Example 2 5 parts of the present compound 1-2, 5 parts of any one of the present compounds 2-1 to 2-27, 35 parts of a mixture of white carbon and polyoxyethylene alkyl ether sulfate ammonium salt (weight ratio 1: 1) And 55 parts of water are mixed and pulverized by a wet pulverization method to obtain a flowable preparation.
- Formulation Example 3 10 parts of the present compound 1-1, 5 parts of any one of the present compounds 2-1 to 2-27, 1.5 parts of sorbitan trioleate, and 28 parts of an aqueous solution containing 2 parts of polyvinyl alcohol are mixed and wetted. After finely pulverizing by a pulverization method, 45.50 parts of an aqueous solution containing 0.05 part of xanthan gum and 0.1 part of aluminum magnesium silicate is added thereto, and further 10 parts of propylene glycol is added and stirred to obtain a flowable preparation. .
- Formulation Example 4 Mix 10 parts of the present compound 1-2, 5 parts of any one of the present compounds 2-1 to 2-27, 1.5 parts of sorbitan trioleate, and 28 parts of an aqueous solution containing 2 parts of polyvinyl alcohol. After finely pulverizing by a pulverization method, 45.50 parts of an aqueous solution containing 0.05 part of xanthan gum and 0.1 part of aluminum magnesium silicate is added thereto, and further 10 parts of propylene glycol is added and stirred to obtain a flowable preparation. .
- Formulation Example 5 10 parts of the present compound 1-1, 40 parts of any one of the present compounds 2-1 to 2-27, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 45 parts of synthetic hydrous silicon oxide are thoroughly ground and mixed. By doing so, a wettable powder is obtained.
- Formulation Example 6 10 parts of the present compound 1-2, 40 parts of any one of the present compounds 2-1 to 2-27, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate, and 45 parts of synthetic hydrous silicon oxide are thoroughly ground and mixed. By doing so, a wettable powder is obtained.
- Formulation Example 7 5 parts of the present compound 1-1, 5 parts of any one of the present compounds 2-1 to 2-27, 14 parts of polyoxyethylene styrylphenyl ether, 6 parts of calcium dodecylbenzenesulfonate and 70 parts of xylene Mix well to obtain the formulation.
- Formulation Example 8 5 parts of the present compound 1-2, 5 parts of any one of the present compounds 2-1 to 2-27, 14 parts of polyoxyethylene styrylphenyl ether, 6 parts of calcium dodecylbenzenesulfonate and 70 parts of xylene Mix well to obtain the formulation.
- Test example 1 Any one compound of this compound 1-1 or this compound 1-2, and any one compound from this compound 2-1 to this compound 2-27 are mixed, and each mixture is dimethylsulfoxide, this compound 1 and After diluting 1 ⁇ l of the diluted solution obtained by diluting each concentration of the present compound 2 to 10 ppm into a microtiter plate (96 wells), conidia of wheat leaf blight fungus (Mycosphaella graminicola) is previously prepared. Dispense 150 ⁇ l of the inoculated potato broth liquid medium (PDB medium). This plate is cultured for 4 days at 18 ° C.
- PDB medium potato broth liquid medium
- Test example 2 A plastic pot is filled with soil, and wheat (variety: Shirogane) is sown there and allowed to grow in a greenhouse for 10 days. Any one of Compound 1-1 or Compound 1-2, and any one compound from Compound 2-1 to Compound 2-27 are added to any one of Formulation Example 1 to Formulation Example 8, respectively. After preparing the preparations according to the above, each of the preparations is diluted with water so that the concentration of each of the present compound 1 and the present compound 2 is 100 ppm so that the diluted solution adheres sufficiently to the leaf surface of the wheat. Spray the foliage.
- the plants After spraying, the plants are air-dried, and one day later, they are spray-inoculated with an aqueous suspension of wheat rust spores (Puccinia reconadita) spores. After inoculation, the plants are placed under humid at 27 ° C. for 1 day, and then placed under illumination for 10 to 15 days, and then the lesion area is examined (this is the treatment area). On the other hand, wheat is cultivated in the same manner as the treated area except that the chemical solution is not sprayed on the foliage (this is referred to as an untreated area). The lesion area of wheat rust is investigated as in the treatment area.
- Test example 3 The compound 1-1 and the compound 2-1 are dissolved in dimethyl sulfoxide, respectively, and the concentration of each of the compound 1-1 and the compound 2-1 is 150 times the concentration described in Table 5 below.
- 1 ⁇ l of the drug solution prepared as described above was dispensed into each well of a microtiter plate (96 wells).
- 149 ⁇ l of YBG medium sterilized by dissolving 10 g of yeast extract, 10 g of bactopeptone, 20 ml of glycerol in 1 L of water and sterilized in 1 L of water
- previously inoculated with conidia of wheat leaf blight fungus was dispensed into wells into which chemical solutions were dispensed. .
- Test example 4 The compound 1-1 was mixed with 5 parts, 35 parts of a mixture of white carbon and polyoxyethylene alkyl ether sulfate ammonium salt (weight ratio 1: 1) and 55 parts of water, and finely pulverized by a wet pulverization method. A flowable preparation containing Compound 1-1 was obtained. Further, the present compound 1-1 was replaced with the present compound 2-1, and the same operation as described above was carried out to obtain a flowable preparation containing the present compound 2-1. These and the flowable preparation containing the present compound 1-1 and the present compound 2-1 obtained according to the above Preparation Example 3 were each diluted with water, and the concentration of each compound in the diluted solution was as shown in Table 6 below. Dilution liquid was prepared so that it might become.
- a plastic pot was filled with soil, and wheat (cultivar: Shirogane) was sown therein and allowed to grow in a greenhouse for 10 days.
- the diluted solution was sprayed on the foliage so as to adhere well to the leaf surface of the wheat.
- the plants were air-dried, and one day later, they were spray-inoculated with an aqueous suspension of wheat red rust spores (Puccinia reconadita) spores. After inoculation, the plant was placed under humid at 23 ° C. for 1 day, and then placed under illumination at 23 ° C. for 10 days, and then the lesion area was examined (this was regarded as the lesion area in the treated area).
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Abstract
Description
すなわち、本発明は以下の通りである。
[1] 下記式(1)
Xは、フッ素原子または水素原子を表す。〕
で示されるピリダジン化合物と、
下記式(2)
R1は、C1~C6アルキル基を表し、
R2は、水素原子、C1~C3アルキル基、C2~C3アルケニル基またはC2~C3アルキニル基を表し、
Aは、窒素原子またはメチン基を表し、
Y1は、ハロゲン原子を表し、そして
nは0または1を表す。〕
で示されるアゾール化合物とを含有する、植物病害防除組成物。
[2] 前記式(2)で示される化合物が、
下記式(2a)
Y2は、塩素原子、フッ素原子または水素原子を表す。〕
で示される化合物である、[1]に記載の植物病害防除組成物。
[3] 前記式(2a)で示される化合物が、
当該式(2a)において、
Y2が塩素原子である化合物である、
[2]に記載の植物病害防除組成物。
[4] 前記式(1)で示される化合物が、
当該式(1)において、
Xが水素原子である、
[1]~[3]のいずれか一項に記載の植物病害防除組成物。
[5] 前記式(1)で示される化合物と前記式(2)で示される化合物との重量比が、1:0.0125~1:500の範囲である、[1]~[4]のいずれか一項に記載の植物病害防除組成物。
[6] 下記式(1)
Xは、フッ素原子または水素原子を表す。〕
で示されるピリダジン化合物と、
下記式(2)
R1は、C1~C6アルキル基を表し、
R2は、水素原子、C1~C3アルキル基、C2~C3アルケニル基またはC2~C3アルキニル基を表し、
Aは、窒素原子またはメチン基を表し、
Y1は、ハロゲン原子を表し、そして
nは0または1を表す。〕
で示されるアゾール化合物との有効量を植物または植物を栽培する土壌に処理する工程を含む、植物病害防除方法。
[7] 植物又は植物を栽培する土壌に処理する工程が、種子に処理する工程である、[6]記載の有害生物防除方法。
[8] 下記式(1)
Xは、フッ素原子または水素原子を表す。〕
で示されるピリダジン化合物と、
下記式(2)
R1は、C1~C6アルキル基を表し、
R2は、水素原子、C1~C3アルキル基、C2~C3アルケニル基またはC2~C3アルキニル基を表し、
Aは、窒素原子またはメチン基を表し、
Y1は、ハロゲン原子を表し、そして
nは0または1を表す。〕
で示されるアゾール化合物との組合せの使用。
本明細書において、例えば「C1~C3」とは、炭素原子数が1乃至3であることを意味する。
前記式(2)におけるR2としては、水素原子、メチル基、エチル基またはプロピル基が好ましく、メチル基がさらに好ましい。
前記式(2a)において、Y2がフッ素原子である化合物(以下、本化合物2-2と記す)。
前記式(2a)において、Y2が水素原子である化合物(以下、本化合物2-3と記す)。
本化合物2に存在する光学異性体の具体例を表2~4に示す。
本発明組成物には、本化合物1及び本化合物2がこれらの合計として、通常0.1~99重量%、好ましくは0.2~90重量%、さらに好ましくは1~80重量%含有される。
界面活性剤としては、例えばアルキル硫酸エステル塩、アルキルアリールスルホン酸塩、ジアルキルスルホコハク酸塩、ポリオキシエチレンアルキルアリールエーテルリン酸エステル塩、リグニンスルホン酸塩、ナフタレンスルホネートホルムアルデヒド重縮合物等の陰イオン界面活性剤、及びポリオキシエチレンアルキルアリールエーテル、ポリオキシエチレンアルキルポリオキシプロピレンブロックコポリマー、ソルビタン脂肪酸エステル等の非イオン界面活性剤、及びアルキルトリメチルアンモニウム塩等の陽イオン界面活性剤が挙げられる。
その他の製剤用補助剤としては、例えばポリビニルアルコール、ポリビニルピロリドン等の水溶性高分子、アラビアガム、アルギン酸及びその塩、CMC(カルボキシメチルセルロ-ス)、ザンサンガム等の多糖類、アルミニウムマグネシウムシリケート、アルミナゾル等の無機物、防腐剤、着色剤、及びPAP(酸性リン酸イソプロピル)、BHT(2,6-ジ-tert-ブチル-4-メチルフェノール)等の安定化剤が挙げられる。
コムギの病害:うどんこ病(Erysiphe graminis)、赤かび病(Fusarium graminearum、F. avenaceum、F. culmorum、Microdochium nivale)、さび病(例えば、黄さび病(Puccinia striiformis)、黒さび病(P. graminis)、赤さび病(P. recondita))、紅色雪腐病(Micronectriella nivale)、雪腐小粒菌核病(Typhula sp.)、裸黒穂病(Ustilago tritici)、なまぐさ黒穂病(Tilletia caries)、眼紋病(Pseudocercosporella herpotrichoides)、葉枯病(Mycosphaerella graminicola)、ふ枯病(Stagonospora nodorum)、黄斑病(Pyrenophora tritici-repentis)。
オオムギの病害:うどんこ病(Erysiphe graminis)、赤かび病(Fusarium graminearum、F. avenaceum、F. culmorum、Microdochium nivale)、さび病(Puccinia striiformis、P.graminis、P.hordei)、裸黒穂病(Ustilago nuda)、雲形病(Rhynchosporium secalis)、網斑病(Pyrenophora teres)、斑点病(Cochliobolus sativus)、斑葉病(Pyrenophora graminea)、リゾクトニア属菌による苗立枯れ病(Rhizoctonia solani)。
トウモロコシの病害:黒穂病(Ustilago maydis)、ごま葉枯病(Cochliobolus heterostrophus)、ひょう紋病(Gloeocercospora sorghi)、南方さび病(Puccinia polysora)、グレイリーフスポット病(Cercospora zeae-maydis)、リゾクトニア属菌による苗立枯れ病(Rhizoctonia solani)。
リンゴの病害:モニリア病(Monilinia mali)、腐らん病(Valsa ceratosperma)、うどんこ病(Podosphaera leucotricha)、斑点落葉病(Alternaria alternata apple pathotype)、黒星病(Venturia inaequalis)、炭そ病(Colletotrichum acutatum)、疫病(Phytophthora cactorum)。
ナシの病害:黒星病(Venturia nashicola, V. pirina)、黒斑病(Alternaria alternata Japanese pear pathotype)、赤星病(Gymnosporangium haraeanum)、疫病(Phytophthora cactorum)。
モモの病害:灰星病(Monilinia fructicola)、黒星病(Cladosporium carpophilum)、フォモプシス腐敗病(Phomopsis sp.)。
ブドウの病害:黒とう病(Elsinoe ampelina)、晩腐病(Glomerella cingulata)、うどんこ病(Uncinula necator)、さび病(Phakopsora ampelopsidis)、ブラックロット病(Guignardia bidwellii)、べと病(Plasmopara viticola)。
カキの病害:炭そ病(Gloeosporium kaki)、落葉病(Cercospora kaki, Mycosphaerella nawae)。
ウリ類の病害:炭そ病(Colletotrichum lagenarium)、うどんこ病(Sphaerotheca fuliginea)、つる枯病(Mycosphaerella melonis)、つる割病(Fusarium oxysporum)、べと病(Pseudoperonospora cubensis)、疫病(Phytophthora sp.)、苗立枯病(Pythium sp.)。
トマトの病害:輪紋病(Alternaria solani)、葉かび病(Cladosporium fulvum)、疫病(Phytophthora infestans)。
ナスの病害:褐紋病(Phomopsis vexans)、うどんこ病(Erysiphe cichoracearum)。
アブラナ科野菜の病害:黒斑病(Alternaria japonica)、白斑病(Cercosporella brassicae)、根こぶ病(Plasmodiophora brassicae)、べと病(Peronospora parasitica)。
ネギの病害:さび病(Puccinia allii)、べと病(Peronospora destructor)。
インゲンの病害:炭そ病(Colletotrichum lindemthianum)。
ラッカセイの病害:黒渋病(Cercospora personata)、褐斑病(Cercospora arachidicola)、白絹病(Sclerotium rolfsii)。
エンドウの病害:うどんこ病(Erysiphe pisi)。
ジャガイモの病害:夏疫病(Alternaria solani)、疫病(Phytophthora infestans)、緋色腐敗病(Phytophthora erythroseptica)、粉状そうか病(Spongospora subterranean f. sp. subterranea)。
イチゴの病害:うどんこ病(Sphaerotheca humuli)、炭そ病(Glomerella cingulata)。
チャの病害:網もち病(Exobasidium reticulatum)、白星病(Elsinoe leucospila)、輪斑病(Pestalotiopsis sp.)、炭そ病(Colletotrichum theae-sinensis)。
タバコの病害:赤星病(Alternaria longipes)、うどんこ病(Erysiphe cichoracearum)、炭そ病(Colletotrichum tabacum)、べと病(Peronospora tabacina)、疫病(Phytophthora nicotianae)。
ナタネの病害:菌核病(Sclerotinia sclerotiorum)、リゾクトニア属菌による苗立枯れ病(Rhizoctonia solani)。
ワタの病害;リゾクトニア属菌による苗立枯れ病(Rhizoctonia solani)。
テンサイの病害:褐斑病(Cercospora beticola)、葉腐病(Thanatephorus cucumeris)、根腐病(Thanatephorus cucumeris)、黒根病(Aphanomyces cochlioides)。
バラの病害:黒星病(Diplocarpon rosae)、うどんこ病(Sphaerotheca pannosa)、べと病(Peronospora sparsa)。
キク及びキク科野菜の病害:べと病(Bremia lactucae)、褐斑病(Septoria chrysanthemi-indici)、白さび病(Puccinia horiana)。
種々の作物の病害:ピシウム属菌によって引き起こされる病害(Pythium aphanidermatum, Pythium debarianum, Pythium graminicola, Pythium irregulare, Pythium ultimum)、灰色かび病(Botrytis cinerea)、菌核病(Sclerotinia sclerotiorum)。
ダイコンの病害:黒斑病(Alternaria brassicicola)。
シバの病害:ダラースポット病(Sclerotinia homeocarpa)、ブラウンパッチ病及びラージパッチ病(Rhizoctonia solani)。
バナナの病害:シガトカ病(Mycosphaerella fijiensis、Mycosphaerella musicola)。
ヒマワリの病害:べと病(Plasmopara halstedii)。
Aspergillus属、Penicillium属、Fusarium属、Gibberella属、Tricoderma属、Thielaviopsis属、Rhizopus属、Mucor属、Corticium属、Phoma属、Rhizoctonia属、及びDiplodia属菌等によって引き起こされる、各種作物の種子病害または生育初期の病害。
Polymixa属またはOlpidium属等によって媒介される各種作物のウイルス病。
野菜;ナス科野菜(ナス、トマト、ピーマン、トウガラシ、ジャガイモ等)、ウリ科野菜(キュウリ、カボチャ、ズッキーニ、スイカ、メロン、スカッシュ等)、アブラナ科野菜(ダイコン、カブ、セイヨウワサビ、コールラビ、ハクサイ、キャベツ、カラシナ、ブロッコリー、カリフラワー等)、キク科野菜(ゴボウ、シュンギク、アーティチョーク、レタス等)、ユリ科野菜(ネギ、タマネギ、ニンニク、アスパラガス)、セリ科野菜(ニンジン、パセリ、セロリ、アメリカボウフウ等)、アカザ科野菜(ホウレンソウ、フダンソウ等)、シソ科野菜(シソ、ミント、バジル等)、イチゴ、サツマイモ、ヤマノイモ、サトイモ等、
花卉、
観葉植物、
シバ、
果樹:仁果類(リンゴ、セイヨウナシ、ニホンナシ、カリン、マルメロ等)、核果類(モモ、スモモ、ネクタリン、ウメ、オウトウ、アンズ、プルーン等)、カンキツ類(ウンシュウミカン、オレンジ、レモン、ライム、グレープフルーツ等)、堅果類(クリ、クルミ、ハシバミ、アーモンド、ピスタチオ、カシューナッツ、マカダミアナッツ等)、液果類(ブルーベリー、クランベリー、ブラックベリー、ラズベリー等)、ブドウ、カキ、オリーブ、ビワ、バナナ、コーヒー、ナツメヤシ、ココヤシ等、
果樹以外の樹;チャ、クワ、花木、街路樹(トネリコ、カバノキ、ハナミズキ、ユーカリ、イチョウ、ライラック、カエデ、カシ、ポプラ、ハナズオウ、フウ、プラタナス、ケヤキ、クロベ、モミノキ、ツガ、ネズ、マツ、トウヒ、イチイ)等。
本化合物1-1と本化合物2-1との組合せ;
本化合物1-1と本化合物2-2との組合せ;
本化合物1-1と本化合物2-3との組合せ;
本化合物1-1と本化合物2-4との組合せ;
本化合物1-1と本化合物2-5との組合せ;
本化合物1-1と本化合物2-6との組合せ;
本化合物1-1と本化合物2-7との組合せ;
本化合物1-1と本化合物2-8との組合せ;
本化合物1-1と本化合物2-9との組合せ;
本化合物1-1と本化合物2-10との組合せ;
本化合物1-1と本化合物2-11との組合せ;
本化合物1-1と本化合物2-12との組合せ;
本化合物1-1と本化合物2-13との組合せ;
本化合物1-1と本化合物2-14との組合せ;
本化合物1-1と本化合物2-15との組合せ;
本化合物1-1と本化合物2-16との組合せ;
本化合物1-1と本化合物2-17との組合せ;
本化合物1-1と本化合物2-18との組合せ;
本化合物1-1と本化合物2-19との組合せ;
本化合物1-1と本化合物2-20との組合せ;
本化合物1-1と本化合物2-21との組合せ;
本化合物1-1と本化合物2-22との組合せ;
本化合物1-1と本化合物2-23との組合せ;
本化合物1-1と本化合物2-24との組合せ;
本化合物1-1と本化合物2-25との組合せ;
本化合物1-1と本化合物2-26との組合せ;
本化合物1-1と本化合物2-27との組合せ;
本化合物1-2と本化合物2-1との組合せ;
本化合物1-2と本化合物2-2との組合せ;
本化合物1-2と本化合物2-3との組合せ;
本化合物1-2と本化合物2-4との組合せ;
本化合物1-2と本化合物2-5との組合せ;
本化合物1-2と本化合物2-6との組合せ;
本化合物1-2と本化合物2-7との組合せ;
本化合物1-2と本化合物2-8との組合せ;
本化合物1-2と本化合物2-9との組合せ;
本化合物1-2と本化合物2-10との組合せ;
本化合物1-2と本化合物2-11との組合せ;
本化合物1-2と本化合物2-12との組合せ;
本化合物1-2と本化合物2-13との組合せ;
本化合物1-2と本化合物2-14との組合せ;
本化合物1-2と本化合物2-15との組合せ;
本化合物1-2と本化合物2-16との組合せ;
本化合物1-2と本化合物2-17との組合せ;
本化合物1-2と本化合物2-18との組合せ;
本化合物1-2と本化合物2-19との組合せ;
本化合物1-2と本化合物2-20との組合せ;
本化合物1-2と本化合物2-21との組合せ;
本化合物1-2と本化合物2-22との組合せ;
本化合物1-2と本化合物2-23との組合せ;
本化合物1-2と本化合物2-24との組合せ;
本化合物1-2と本化合物2-25との組合せ;
本化合物1-2と本化合物2-26との組合せ;
本化合物1-2と本化合物2-27との組合せ。
本化合物1-1と、本化合物2-1~本化合物2-27のいずれか一つとを、1:0.025~1:100の重量比で含有する組成物;
本化合物1-1と、本化合物2-1~本化合物2-27のいずれか一つとを、1:0.1~1:10の重量比で含有する組成物;
本化合物1-2と、本化合物2-1~本化合物2-27のいずれか一つとを、1:0.0125~1:500の重量比で含有する組成物;
本化合物1-2と、本化合物2-1~本化合物2-27のいずれか一つとを、1:0.025~1:100の重量比で含有する組成物;
本化合物1-2と、本化合物2-1~本化合物2-27のいずれか一つとを、1:0.1~1:10の重量比で含有する組成物。
かかる土壌処理としては、例えば、土壌散布、土壌混和及び土壌への薬液潅注が挙げられる。
かかる根部処理としては、例えば、本化合物1及び本化合物2とを含有する薬液に植物の全体または根部を及び浸漬する方法、及び、本化合物1と本化合物2と固体担体とを含有する固体製剤を植物の根部に付着させる方法が挙げられる。
かかる種子処理としては、例えば、植物病害から保護しようとする植物の種子または球根への本発明組成物の処理が挙げられ、詳しくは、例えば本発明組成物の懸濁液を霧状にして種子表面若しくは球根表面に吹きつける吹きつけ処理、本発明組成物の水和剤、乳剤若しくはフロアブル剤に少量の水を加えるか若しくはそのままで、種子または球根に塗布する塗沫処理、本発明組成物の溶液に一定時間種子を浸漬する浸漬処理、フィルムコート処理及びペレットコート処理が挙げられる。
乳剤、水和剤、フロアブル剤等は通常水で希釈して散布することにより処理する。この場合、本化合物1及び本化合物2の濃度は、本化合物1及び本化合物2の合計での濃度で、通常0.0005~2重量%、好ましくは0.005~1重量%である。粉剤、粒剤等は通常希釈することなくそのまま処理する。
本化合物1-1 5部、本化合物2-1~本化合物2-27のいずれか一つ 5部、ホワイトカーボンとポリオキシエチレンアルキルエーテルサルフェートアンモニウム塩との混合物(重量割合 1:1)35部及び水 55部を混合し、湿式粉砕法で微粉砕することにより、フロアブル製剤を得る。
本化合物1-2 5部、本化合物2-1~本化合物2-27のいずれか一つ 5部、ホワイトカーボンとポリオキシエチレンアルキルエーテルサルフェートアンモニウム塩との混合物(重量割合 1:1)35部及び水 55部を混合し、湿式粉砕法で微粉砕することにより、フロアブル製剤を得る。
本化合物1-1 10部、本化合物2-1~本化合物2-27のいずれか一つ 5部、ソルビタントリオレエート 1.5部、及びポリビニルアルコール2部を含む水溶液 28部を混合し、湿式粉砕法で微粉砕した後、この中にキサンタンガム0.05部及びアルミニウムマグネシウムシリケート0.1部を含む水溶液 45.50部を加え、さらにプロピレングリコール 10部を加えて撹拌混合し、フロアブル製剤を得る。
本化合物1-2 10部、本化合物2-1~本化合物2-27のいずれか一つ 5部、ソルビタントリオレエート 1.5部、及びポリビニルアルコール2部を含む水溶液 28部を混合し、湿式粉砕法で微粉砕した後、この中にキサンタンガム0.05部及びアルミニウムマグネシウムシリケート0.1部を含む水溶液 45.50部を加え、さらにプロピレングリコール 10部を加えて撹拌混合し、フロアブル製剤を得る。
本化合物1-1 10部、本化合物2-1~本化合物2-27のいずれか一つ 40部、リグニンスルホン酸カルシウム 3部、ラウリル硫酸ナトリウム 2部及び合成含水酸化珪素 45部をよく粉砕混合することにより、水和剤を得る。
本化合物1-2 10部、本化合物2-1~本化合物2-27のいずれか一つ 40部、リグニンスルホン酸カルシウム 3部、ラウリル硫酸ナトリウム 2部及び合成含水酸化珪素 45部をよく粉砕混合することにより、水和剤を得る。
本化合物1-1 5部、本化合物2-1~本化合物2-27のいずれか一つ 5部、ポリオキシエチレンスチリルフェニルエ-テル14部、ドデシルベンゼンスルホン酸カルシウム6部及びキシレン70部をよく混合することにより、製剤を得る。
本化合物1-2 5部、本化合物2-1~本化合物2-27のいずれか一つ 5部、ポリオキシエチレンスチリルフェニルエ-テル14部、ドデシルベンゼンスルホン酸カルシウム6部及びキシレン70部をよく混合することにより、製剤を得る。
本化合物1-1または本化合物1-2のいずれか一化合物、及び本化合物2-1から本化合物2-27までのいずれか一化合物を混合し、混合物それぞれをジメチルスルホキシドで、本化合物1及び本化合物2のそれぞれの濃度が10ppmになるように希釈して得られる希釈液をマイクロタイタープレート(96ウェル)に1μlずつ分注したのち、あらかじめコムギ葉枯病菌(Mycosphaerella graminicola)の分生胞子を接種したジャガイモ煎汁液体培地(PDB培地)を150μl分注する。このプレートを4日間、18℃で培養してコムギ葉枯病菌を増殖させたのち、マイクロタイタープレートの各ウェルの550nmの吸光度にて、コムギ葉枯病菌の生育度を測定する。
その生育度をもとに、下記「式1」を用い効力を算出する。その結果、高い効力を示すことが認められる。
「式1」
効力=100×(X-Y)/X
X:無処理区の菌の生育度
Y:処理区の菌の生育度
プラスチックポットに土壌を詰め、そこにコムギ(品種;シロガネ)を播種し、温室内で10日間生育させる。本化合物1-1または本化合物1-2のいずれか一化合物、及び本化合物2-1から本化合物2-27までのいずれか一化合物をそれぞれ上記製剤例1から製剤例8までのいずれかに準じて製剤とした後、それぞれの製剤を水で、本化合物1及び本化合物2のそれぞれの濃度が100ppmになるように希釈して得られる希釈液を、上記コムギの葉面に充分付着するように茎葉散布する。散布後植物を風乾し、1日後にコムギ赤さび病菌(Puccinia reconadita)胞子の水懸濁液を噴霧接種する。接種後植物を27℃多湿下に1日間置き、次に照明下に10日から15日間置いた後、病斑面積を調査する(これを処理区とする。)。
一方、薬液の茎葉散布を行わないこと以外は処理区と同様にコムギを栽培する(これを無処理区とする。)。処理区と同様にコムギ赤さび病の病斑面積を調査する。
処理区及び無処理区それぞれの病斑面積から、下記「式2」により処理区の効力を求める。その結果、高い効力を示すことが認められる。
「式2」
効力=〔1-(処理区の病斑面積/無処理区の病斑面積)〕×100
本化合物1-1、及び本化合物2-1をそれぞれジメチルスルホキシドに溶解させ、本化合物1-1及び本化合物2-1のそれぞれの化合物の濃度が下記表5に記載の濃度の150倍となるように調整した薬液を、マイクロタイタープレート(96ウェル)の各ウェルに1μlずつ分注した。あらかじめコムギ葉枯病菌の分生胞子を接種したYBG培地(水1Lに対し、酵母エキス 10g、バクトベプトン 10g、グリセロール 20mlを溶解し、滅菌したもの)149μlを、薬液を分注したウェルに分注した。このプレートを6日間、18℃で培養してコムギ葉枯病菌を増殖させたのち、マイクロタイタープレートの各ウェルの550nmの吸光度にて、コムギ葉枯病菌の生育度を測定した(これを処理区とした)。一方、薬液をジメチルスルホキシドに替えて処理区と同様にコムギ葉枯病菌を生育させ、その生育度を調査した(これを無処理区とした)。それぞれの生育度をもとに、下記「式1」を用い効力を算出した。
その結果、本化合物1-1と本化合物2-1との混用区では、それぞれの単用区と比較して相乗効果を示すことが認められた。
「式1」
効力(%)=100×(X-Y)/X
X:無処理区の菌の生育度
Y:処理区の菌の生育度
本化合物1-1 5部、ホワイトカーボンとポリオキシエチレンアルキルエーテルサルフェートアンモニウム塩との混合物(重量割合 1:1)35部及び水 55部を混合し、湿式粉砕法で微粉砕することにより、本化合物1-1を含有するフロアブル製剤を得た。また、本化合物1-1を、本化合物2-1に替えて、上記と同様の操作を行い、本化合物2-1を含有するフロアブル製剤を得た。
これらと、上記製剤例3に準じて得られた本化合物1-1及び本化合物2-1を含有するフロアブル製剤とをそれぞれ水で希釈し、希釈液中の各化合物の濃度が下記表6のとおりになるように希釈液を調製した。
プラスチックポットに土壌を詰め、そこにコムギ(品種;シロガネ)を播種し、温室内で10日間生育させた。上記希釈液を、上記コムギの葉面に充分付着するように茎葉散布した。散布後植物を風乾し、1日後にコムギ赤さび病菌(Puccinia reconadita)胞子の水懸濁液を噴霧接種した。接種後植物を23℃多湿下に1日間置き、次に照明下、23℃で10日間置いた後、病斑面積を調査した(これを処理区の病斑面積とした)。
一方、薬剤の茎葉散布を行わずに処理区と同様にコムギを栽培し、コムギ赤さび病菌の接種を行い、その病斑面積を調査した(これを無処理区の病斑面積とした)。
処理区及び無処理区それぞれの病斑面積から、下記「式2」により処理区の効力を求めた。
その結果、本化合物1-1と本化合物2-1との混用区では、それぞれの単用区と比較して相乗効果を示すことが認められた。
「式2」
効力(%)=〔1-(処理区の病斑面積/無処理区の病斑面積)〕×100
Claims (8)
- 前記式(2a)で示される化合物が、
当該式(2a)において、
Y2が塩素原子である化合物である、
請求項2に記載の植物病害防除組成物。 - 前記式(1)で示される化合物が、
当該式(1)において、
Xが水素原子である、
請求項1~3のいずれか一項に記載の植物病害防除組成物。 - 前記式(1)で示される化合物と前記式(2)で示される化合物との重量比が、1:0.0125~1:500の範囲である、請求項1~4のいずれか一項に記載の植物病害防除組成物。
- 植物又は植物を栽培する土壌に処理する工程が、種子に処理する工程である、請求項6に記載の有害生物防除方法。
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