JP2003055114A - Fungicidal mix composition for paddy rice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fungicidal mix composition having widely high controlling effect on paddy rice disease injuries, and to provide a method for controlling paddy rice disease injuries by the use of the composition. SOLUTION: This fungicidal mix composition for paddy rice comprises as the active ingredients a composition of formula (1) [where, R is H, -COR<1> , -COOR<1> (wherein R<1> is a 1-4C alkyl), -COCH2 OCH3 or -COCH3 OCOCH3 ] or an acid addition salt thereof and at least one well-known paddy rice disease injury-controlling compound. The composition has high controlling effect on various paddy rice disease injuries including rice blight, sheath blight, ear blight caused by Helminthosporium fungi or Cercospora fungi, or the like, rice discoloration caused by Curvularia fungi or Alternaria fungi, or the like, false smut and bacterial grain rot.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a novel bactericidal mixture composition having excellent bactericidal activity.

[0002]

2. Description of the Related Art General formula (1) relating to the present invention

[Chemical 3] [In the formula, R is a hydrogen atom, -COR ¹ , -COOR ¹ (wherein R ¹ is an alkyl group having 1 to 4 carbon atoms), -CO
CH ₂ OCH ₃ or —COCH ₂ OCOCH ₃ ] or an acid addition salt thereof is a novel compound having excellent bactericidal activity, and its production method and bactericide are described in PCT / JP01 / 04501. Has been done. On the other hand, flutolanil, mepronil, thifluzamide,
Frametopyr, validamycin, penciclone, diclomedine, cimeconazole, azoxystrobin, metminostrobin, ferrimzone, iprodione, iminoctadine acetate, iminoctadine albesylate, basic copper chloride, basic copper sulfate, oxolinic acid, etc. The compounds possessed are various types of paddy rice diseases such as blight of rice, blight of sesame leaf blight, and blight of rice blight, discolored rice caused by Curvularia spp. And Alternaria spp. To show a control effect against
For example, it is described in the Agricultural Chemicals Handbook 1998 edition (1998. Published by the Japan Plant Protection Association) and the general contract test report (issued by the Japan Plant Protection Association). However, when each of these compounds is used alone for disease control, the target disease is limited depending on the compound,
Due to the short residual effect, lack of effect, etc., it is impossible to simultaneously control practically against multiple diseases.

[0003]

[Problems to be Solved by the Invention] At present, since the aging of agricultural workers is progressing further, labor saving is strongly desired in every scene of agricultural work, and the number of times of spraying and the labor are also reduced in controlling rice diseases. Technology is needed. Therefore, it has been strongly desired to develop a drug capable of controlling a plurality of diseases at the same time by mixing several kinds of compounds having effects on different diseases without losing the characteristics of each active compound.

[0004]

As a result of intensive studies to solve the above problems, the present inventors have found that a mixed composition containing at least one compound represented by the general formula (1) and a paddy rice disease controlling compound. The present invention has been completed by finding that the product exhibits a synergistic effect without losing the characteristics of each active compound and has an excellent controlling effect against the diseases of paddy rice.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The invention is represented by the general formula (1)

[Chemical 4] [In the formula, R is a hydrogen atom, -COR ¹ , -COOR ¹ (wherein R ¹ is an alkyl group having 1 to 4 carbon atoms), -CO
CH ₂ OCH ₃ or —COCH ₂ OCOCH ₃ ] or an acid addition salt thereof and flutolanil, mepronil, thifluzamide, flametopyr, validamycin, pencyclone, diclomedine, cimeconazole, azoxystrobin, metminostrobin, ferimzone. Sterilized mixture composition for paddy rice containing at least one bactericidal active compound selected from compounds such as bisphenol, iprodione, iminoctadine acetate, iminoctadine albesylate, basic copper chloride, basic copper sulfate and oxolinic acid, and the same Is a method for controlling paddy rice diseases.

When the bactericidal mixture composition of the present invention is actually applied, a mixture of the compound represented by the general formula (1) and the bactericidal active compound is prepared in advance and used in the form of a formulation, or each of them is usually used alone. It can be used as a formulation form and mixed on the spot. In formulating the sterilized mixed composition of the present invention, no special conditions are required, and powders, granules, packs, wettable powders are prepared by using a method well known in the art according to general agricultural chemicals. Granule wettable powders, flowables, liquids, microcapsules, emulsions and other arbitrary dosage forms can be prepared and used for various purposes according to the purpose.

In these preparations, the main purpose of the active ingredient is to solid carrier, solvent, surfactant and other auxiliary agents (improvement of physical properties of the preparation, stabilization of active ingredient, enhancement of efficacy, etc.). ), Etc., and solid carriers such as clay, talc, calcium carbonate, diatomaceous earth, zeolite, bentonite, acid clay, activated clay, attapargas clay, vermiculite, perlite, pumice, white carbon, Typical examples include titanium dioxide, water-soluble salts, wood flour, corn cobs, walnut shells, powdered cellulose, starch, dextrin, sugars and the like.

Examples of the solvent include xylene, C ₉ alkylbenzene, C ₁₀ alkylbenzene, alkylnaphthalene, aromatic solvents such as high boiling aromatic hydrocarbons, aliphatic solvents such as normal paraffin, isoparaffin and naphthene,
Mixed solvents such as solvents produced from kerosene and kerosene, machine oils such as high boiling aliphatic hydrocarbons, alcohols such as ethanol, isopropanol, cyclohexanol, ethylene glycol, diethylene glycol, propylene glycol, hexylene glycol, polyethylene glycol , Polyhydric alcohols such as polypropylene glycol, polyhydric alcohol derivatives such as propylene glycol ether, ketones such as cyclohexanone and γ-butyrolactone, fatty acid methyl ester (coconut oil fatty acid methyl ester), dibasic acid methyl ester (succinic acid Esters such as dimethyl ester, glutamic acid dimethyl ester, adibic acid dimethyl ester),
Nitrogen-containing solvent such as N-alkylpyrrolidone, coconut oil,
Typical examples include soybean oil, oil and fat such as rapeseed oil, and water.

As the surfactant, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester,
Sucrose fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene tree fatty acid ester, polyoxyethylene fatty acid diester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, Polyoxyethylene dialkyl phenyl ether, polyoxyethylene alkyl phenyl ether / formalin condensate, polyoxyethylene / polyoxypropylene block polymer, alkyl polyoxyethylene / polyoxypropylene block polymer ether, alkylphenyl polyoxyethylene / polyoxypropylene block Polymer ether, polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, polyoxy Tylene bisphenyl ether, polyoxyethylene benzyl phenyl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene ether type silicone, ester type silicone, nonionic surfactant such as fluorine type surfactant, alkyl sulfate, polyoxyethylene alkyl Ether sulphate, polyoxyethylene alkylphenyl ether sulphate, polyoxyethylene benzyl phenyl ether sulphate, polyoxyethylene / polyoxypropylene block polymer sulphate, paraffin sulphonates, AOSs, dialkyl sulphosuccinates, alkylbenzene sulphonates, naphthalene sulphonates , Naphthalene sulfonate / formalin condensates, alkyl diphenyl ace Ludisulfonates, lignin sulfonates, polyoxyethylene alkylphenyl ether sulfonates, polyoxyethylene alkyl ether sulfosuccinic acid half esters, fatty acid salts, N-methyl-fatty acid sarcosinates, resin acid salts, polyoxyethylene alkyl ether phosphates , Polyoxyethylene alkylphenyl ether phosphates, polyoxyethylene benzylated phenyl ether phosphates, polyoxyethylene / polyoxypropylene block polymer phosphates, lecithins, alkyl phosphates, alkyltrimethylammonium chlorides, methyl polyoxyethylene Alkyl ammonium chlorides, alkyl N-methyl-pyridinium bromides, alkyl methyl Representative examples thereof include ammonium chlorides, alkylpentamethylpropylenediamine dichlorides, alkyldimethylbenzalkonium chlorides, benzethonium chlorides, dialkyldiaminoethylbetaines, and alkyldimethylbenzylbetaines.

As auxiliary agents, isopropyl phosphate, carboxymethyl cellulose, PVA, sodium tripolyphosphate, sodium hexametaphosphate, xanthan gum, guar gum, carboxymethyl cellulose, sodium benzoate, potassium sorbate, parahydroxybenzoic acid ester, 1,2-benzate. Thiazolin-3-one, ethylene glycol, diethylene glycol, propylene glycol, polyvinylpropidone, urea, hexamethylenetetramine, antioxidant, ultraviolet absorber,
Typical examples include zeolite, quick lime, magnesium oxide, hydrophobic high-boiling solvent, sodium polyacrylate, alginic acid, kraft lignin, copolymers of methacrylic acid and vinylpropidone, glycerin, sorbitol, and water-swellable polymer compounds. It is mentioned as a thing.

The composition of the present invention may be prepared by mixing 100 parts by weight of the compound represented by the general formula (1) or an acid addition salt thereof and the fungicidally active compound in a total amount of 0.1 to 90 parts by weight, It is preferably 1 to 70 parts by weight. The compounding ratio of the compound represented by the general formula (1) and the fungicidally active compound is in the range of 1: 100 to 100: 1, preferably in the range of 1:30 to 30: 1. The application rate may vary depending on the mixing ratio of active ingredients, formulation form, application time, application method, and disease to be controlled, but the amount of active ingredient per 10a is usually 1 to 5,000 g, preferably 10
~ 300g.

When the composition of the present invention is used for controlling disease of paddy rice, it can be sprayed as it is or diluted with water etc. for foliage application, water surface application, nursery box treatment, and other fungicides, insecticides and herbicides. It can also be used in combination with plant preparations, fertilizers, etc. The disease of the paddy rice in which the composition of the present invention exerts a controlling effect includes, for example, blast, panicle bleeding with sesame leaf blight fungus and streak leaf blight fungus, discolored rice due to Curvularia spp. And Alternaria spp. A typical example is rice rot bacterial disease.

Next, Table 1 shows specific examples of substitution of the compound represented by the general formula (1) of the present invention.

[Chemical 5]

[Table 1]

[0014]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

Formulation Examples 1 to 6 Next, the sterilized mixture composition of the present invention will be specifically described with reference to formulation examples and test examples. The representative ones are shown below. Formulation Example 1. Wettable powder Compound A 10 parts One kind of paddy rice disease control compound 10 parts Diatomaceous earth 57 parts White carbon 10 parts Polyoxyethylene lauryl ether 8 parts Calcium ligninsulfonate 5 parts 5 parts or more were uniformly pulverized to obtain a wettable powder. Formulation example 2. Wettable powder Compound A 2 parts One kind of paddy rice disease controlling compound 10 parts Diatomaceous earth 65 parts White carbon 10 parts Polyoxyethylene lauryl ether 8 parts Calcium ligninsulfonate 5 parts 5 parts or more were uniformly pulverized to obtain a wettable powder. Formulation example 3. Wettable powder Compound A 10 parts One kind of paddy rice disease controlling compound 2 parts Diatomaceous earth 65 parts White carbon 10 parts Polyoxyethylene lauryl ether 8 parts Calcium ligninsulfonate 5 parts 5 parts or more were uniformly pulverized to obtain a wettable powder. Formulation example 4. Dust compound A 2 parts One kind of paddy rice disease controlling compound 2 parts Clay 95 parts White carbon 0.5 part Dolores A (manufactured by Sankyo) 0.5 parts The above was uniformly pulverized to obtain a powder. Formulation example 5. Dust agent Compound A 0.4 parts Rice paddy disease control compound 2 parts Clay 96.6 parts White carbon 0.5 parts Dolores A (manufactured by Sankyo) 0.5 parts The above ingredients were uniformly pulverized to obtain a powder agent. Formulation example 6. Dust compound A 2 parts One kind of paddy rice disease controlling compound 0.4 part Clay 96.6 parts White carbon 0.5 part Dolores A (manufactured by Sankyo) 0.5 parts The above was uniformly pulverized to obtain a powder.

Test Example 1 Preventive effect against rice blast disease
(Infection inhibition test) After seeding in a plastic pot containing culture soil, 15
Rice (variety: ten stones) that had been raised for about one day and had the third true leaf completely developed was used as a test plant. A wettable powder produced according to the formulation example was diluted with water to have a predetermined concentration (adding a spreading agent), and sprayed with 10 ml per 3 pots using a spray gun. After air-drying, a conidial suspension (1 to 5) prepared and collected from a Petri dish in which rice blast fungus had been previously cultivated was prepared.
X 10 ⁶ / ml) and sprayed inoculate evenly in a moist chamber at 25 ° C.
Let stand for hours. After that, it was transferred to an artificial climate room at 20 ° C at night and 25 ° C during the day to cause disease, and the number of lesions on the third true leaf was counted 7 days after the inoculation, and the control value was calculated by the following formula from the comparison with the untreated plot. .

[Formula 1] The results are shown in Table 2.

[Table 2]

[0017]Test Example 2 Treatment effect against rice blast
(Spot development inhibition test) After seeding in a plastic pot containing culture soil,
Rice (cultivar: 10
Stone) was used as the test plant. Cultivate rice blast fungus in advance
Suspension of conidia collected and adjusted from the petri dish that has been cultivated
Liquid (1-5 × 10 ⁶/ Ml) and spray inoculate evenly,
It was allowed to stand in a wet room for 24 hours. After that, at night 20 ℃, daytime 25 ℃
Moved to artificial climate room and manufactured according to formulation example 48 hours after inoculation
The wettable powder was diluted with water to prepare a prescribed concentration (spreading agent
10 ml per 3 pots using a spray gun
Cloth treated. After air-drying, move to the above-mentioned artificial weather room again and emit.
7 days after inoculation, count the number of lesions on the 3rd true leaf to prevent infection.
The control value was calculated as in the case of the damage test. Table 3 is the result
Shown in.

[Table 3]

Test Example 3 Preventive effect against rice sesame leaf blight
(Infection inhibition test) After seeding in a plastic pot containing culture soil, 15
Rice (variety: ten stones) that had been raised for about one day and had the third true leaf completely developed was used as a test plant. A wettable powder produced according to the formulation example was diluted with water to have a predetermined concentration (adding a spreading agent), and sprayed with 10 ml per 3 pots using a spray gun. After air-drying, a conidial suspension (1-5
× 10 ⁵ / ml) and sprayed inoculated evenly to a humid chamber at 25 ℃.
Let stand for 4 hours. After that, it was transferred to an artificial climate room at 20 ° C. at night and 25 ° C. during the day to cause the disease, and 7 days after the inoculation, the number of lesions on the third true leaf was counted, and the control value was calculated in the same manner as the rice blast disease. The results are shown in Table 4.

[Table 4]

Test Example 4 Preventive effect against rice blight
Dye inhibition test) 40 after seeding in a plastic pot containing culture soil
The 6th to 7th true-leaf rice (cultivar: Tenseki), which had been raised for about a day, was used as the test plant. A wettable powder produced according to the formulation example was diluted with water to a predetermined concentration (using a spreading agent), sprayed on 10 ml leaf sheaths per 3 pots using a spray gun, and air-dried. After that, from the petri dish in which the rice wilt fungus had been previously cultivated, the fungal part was cut out together with the agar, placed in the base of the rice under test, and allowed to stand in a humid chamber at 28 ° C for 48 hours for inoculation. After that, the disease was caused by an artificial weather device set at 28 ° C and a humidity of 80%, and 14 days after the inoculation, the lesion height of the leaf sheath was measured, and the disease severity and control value were calculated from the following formulas by comparison with the untreated plot. did. The results are shown in Table 5. Index 0: No lesions 0.5: Brown lesions with a length of 2 cm or less that are not complete lesions 1: Only a few lesions are found at the root of the plant 2: The lesion height is 1 / of the leaf sheath Less than 4 3: Lesion height is 1/4 or more and less than 1/2 of leaf sheath 4: Lesion height is 1/2 or more and less than 3/4 of leaf sheath 5: Lesion height is 3/4 or more of leaf sheath

[Formula 2]

[Formula 3]

[Table 5]

[0020]

As is apparent from the above test results, the bactericidal mixture composition of the present invention has an excellent bactericidal effect, enables simultaneous control of diseases in paddy rice, and can reduce the number of times of control. Further, since the composition has a synergistic effect, the amount of applied drug per area can be reduced. Therefore, the germicidal mixture composition of the present invention can greatly contribute to labor saving of agriculture, protection of environment and stability of food production.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01N 43/54 A01N 43/54 D Z 43/56 43/56 F 43/58 43/58 C 43/78 43/78 F 47/32 47/32 47/38 47/38 B 47/44 47/44 55/00 55/00 D 59/20 59/20 AZ

Claims (4)

[Claims] 1. A general formula (1): [In the formula, R is a hydrogen atom, -COR ¹ , -COOR ¹ (wherein R ¹ is an alkyl group having 1 to 4 carbon atoms), -CO
CH ₂ OCH ₃ or —COCH ₂ OCOCH ₃ ] or an acid addition salt thereof and at least one compound of controlling rice disease, and a sterilized mixture composition for paddy rice. 2. The paddy rice disease controlling compound is flutolanil, mepronil, tifluzamide, flametopyr, validamycin, penciclone, diclomedine, cimeconazole, azoxystrobin, metminostrobin, ferimzone, iprodione, iminoctadine acetate, iminoctadine albesylate, base. 2. The sterilized mixed composition for paddy rice according to claim 1, which is a soluble copper chloride, a basic copper sulfate, or an oxolinic acid. 3. A general formula (1): [In the formula, R is a hydrogen atom, -COR ¹ , -COOR ¹ (wherein R ¹ is an alkyl group having 1 to 4 carbon atoms), -CO
CH ₂ OCH ₃ or —COCH ₂ OCOCH ₃ ] or an acid addition salt thereof and at least one paddy rice disease controlling compound are applied to the paddy field or rice body. And a method for controlling a rice disease. 4. The paddy rice disease controlling compound is flutolanil, mepronil, tifluzamide, flametopyr, validamycin, penciclone, diclomedine, cimeconazole, azoxystrobin, metminostrobin, ferrimzone, iprodione, iminoctadine acetate, iminoctadine albesylate, base. 4. The method for controlling rice disease according to claim 3, wherein the control agent is a basic copper chloride, a basic copper sulfate, or an oxolinic acid.