JPH07330516A - Fungicide composition - Google Patents

Abstract

PURPOSE:To obtain a fungicide composition extremely effective for simultneously controlling sheath blight and blast of rice plant, by using both a specific pyrazole compound and a specific methoxyiminoacetamide compound. CONSTITUTION:This fungicide composition comprises N-(1,1,3-trimethyl-2-oxa-4- indanyl)-5-chloro-1,3-dimethylpyrazole-4-carboxyamide of formula I and N- methyl-alpha-methoxyimino-2-phenoxyphenylacetamide of formula II as active ingredients. The fungicide composition is effective not only for sheath blight of rice plant but also for false sheath blight and helminthosporium leaf spot of rice plant, rust, snow blight, foot rot and loose smut of wheat, Rhizoctonia solani of potato and beet, rust of apple and pear, brown patch of lawn grass, bacterial wilt and stem rot of various crops. The blending ratio of the compound of formula I and the compound of formula II is preferably in the range of 1:0.1 to 100 by weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fungicide composition, and more particularly to a fungicide composition suitable for controlling diseases of rice.

[0002]

[Background Art] [Technical Problem and Problem to be Solved by the Invention] At present, blight and blast are the most important diseases in rice cultivation, and it can be said that the control of these two diseases results in stable rice harvest. .

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a very effective bactericide composition for simultaneously controlling rice blight and blast of rice, and the bactericide composition is ,
As an active ingredient, N- (1,1,3-trimethyl-2-oxa-4-indanyl) -5-chloro-1,3-dimethylpyrazole-4-carboxamide, that is, the formula

[Chemical 3] And a N-methyl-α-methoxyimino-2-phenoxyphenylacetamide, that is, a compound represented by the formula:

[Chemical 4] And a methoxyiminoacetic acid amide compound (hereinafter referred to as compound B). Compound A is a compound described in JP-A-2-131481,
The compound B is the compound described in JP-A-3-246268, and the compound A according to the description in these publications.
And compound B can be obtained.

The fungicidal composition of the present invention is applied to rice blight (Rhizoctonia solani) and blast (Pyricularia oryz).
ae) as well as pseudo-blight of rice (Rhizoctonia oryz)
ae, R.solani III type B), sesame leaf blight (Cochliobolus)
miyabeanus), wheat rust (Puccinia striiformis,
P. graminis, P. recondita, P. hordei), snow rot (T
yphula incarnata, T. ishikariensis), strain rot (Rhi
zoctonia cerealis), naked smut (Ustilago tritici,
U. nuda), potatoes and beets of Rhizoctonia (Rh
izoctonia solani), red scab (Gymnospo) on apples and pears
rangium sp.), brown patch disease (Rhizocto
nia solani), wilt of various crops (Rhizoctonia solan
It is also effective for controlling i) and white silkworm (Corticium rolfsii). Further, in controlling disease caused by Rhizoctonia such as rice blight, it is particularly effective due to its excellent synergistic effect.

In the fungicide composition of the present invention, compound A
The mixing ratio of the compound B with the compound B can be varied over a wide range, but it is usually within the range of 1: 0.01 to 1000, preferably 1: 0.1 to 100 by weight.

The fungicide composition of the present invention is usually a solid carrier,
Mixing with a liquid carrier, a gaseous carrier, etc., and optionally adding a surfactant, other auxiliary agents for formulation, etc., an oil solution, an emulsion,
It is used as a wettable powder, granules, powder, aerosol, suspension, foam, microcapsule formulation, seed coating, ULV (cold mist, warm mist) formulation, paste and the like. In these formulations, the total amount of compound A and compound B is generally 0.1-99.9% by weight, preferably 0.2-80% by weight.

Examples of solid carriers used for formulation include clays (kaolinite, diatomaceous earth, synthetic hydrous silicon oxide, fubasami clay, bentonite, acid clay, etc.), talc, and other inorganic minerals (sericite, quartz powder). , Sulfur powder, activated carbon, calcium carbonate, etc., chemical fertilizers (ammonium sulphate, ammonium phosphate, ammonium nitrate, ammonium chloride, urea, etc.), etc., and fine powders and granules. Examples of the liquid carrier include water and alcohols (methanol). , Ethanol, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.), aromatic hydrocarbons (toluene, xylene, ethylbenzene, methylnaphthalene, etc.), non-aromatic hydrocarbons (hexane, cyclohexane, kerosene, etc.), esters (Ethyl acetate, butyl acetate, etc.), Nitriles (acetonitrile, isobutyronitrile) ), Ethers (dioxane, diisopropyl ether), acid amides (dimethylformamide, dimethylacetamide), halogenated hydrocarbons (dichloroethane, trichlorethylene)
Examples of the gaseous carrier, that is, the propellant include carbon dioxide gas, butane gas, fluorocarbon and the like.

Examples of the surfactant include alkyl sulfates, alkyl sulfonates, alkyl aryl sulfonates, alkyl aryl ethers and polyoxyethylenated products thereof, polyethylene glycol ethers, polyhydric alcohol esters, sugar alcohols. Examples thereof include derivatives. Other auxiliary agents for formulation include
For example, casein, gelatin, polysaccharides (starch, gum arabic, cellulose derivatives, alginic acid, etc.), lignin derivatives, bentonite, synthetic water-soluble polymers (polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, etc.), etc. PAP (isopropyl acid phosphate), BHT (2,6-di-tert-butyl-4-methylphenol), BHA (2- / 3-tert-butyl-4-methoxyphenol), vegetable oil, mineral oil, fatty acid, Examples include stabilizers such as fatty acid esters.

The formulated fungicidal composition of the present invention is applied to a plant, water surface or soil as it is or after diluted with water or the like. Examples of application sites include paddy fields, upland fields, orchards, meadows, lawns and the like. It can also be used for seed treatment such as seed dressing treatment and seed dipping treatment.
Further, it can be used in combination with other fungicides, insecticides, herbicides, fertilizers, soil conditioners and the like.

The application rate of the fungicide composition of the present invention is as follows: mixing ratio of the active ingredient compounds, compound A and compound B, weather conditions, formulation form, application time, application method, application site, disease to be controlled, target crop. The amount is usually 0.001 to 1000 g, preferably 0.1 to 100 g in terms of the amount of the active ingredient compound per are. When emulsions, wettable powders, suspensions, solutions, etc. are diluted with water before application, the application concentration is 0.000.
It is 1 to 1%, preferably 0.001 to 0.5%, and granules, powders and the like are usually applied as they are without dilution. For seed treatment, the amount of the active ingredient compound is usually 0.001 to 50 g, preferably 0.01 to 10 g per 1 kg of seeds. For soil treatment, the amount of the active ingredient compound is usually 0.01 to 1000 g, preferably 0.01 per 1 are.
~ 100g is used. For water surface treatment of paddy fields, the amount of active ingredient compound is usually 0.01 to 400 per are.
g, preferably 1 to 100 g, and in the rice seedling raising box treatment, the amount of the active ingredient compound per box (30 cm × 60 cm × 3 cm) is usually 0.1 to 100 g. The fungicide composition of the present invention is particularly suitable for controlling rice diseases, and can be used in a wide range of times from the time when rice seedlings are grown in a nursery box to the time after harvesting after rice planting, and blight blight, It shows excellent efficacy in controlling blast disease.

[0011]

[Examples] Formulation examples and test examples are shown below. In the following examples, parts represent parts by weight. Formulation Example 1 Compound A 0.5 part, Compound B 8 parts, synthetic hydrous silicon oxide
1 part, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 58.5 parts of kaolin clay are well pulverized and mixed, water is added and well kneaded, and then granulated and dried to obtain granules. Formulation Example 2 Compound A 1.2 parts, Compound B 5 parts, synthetic hydrous silicon oxide
1 part, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 60.8 parts of kaolin clay are well pulverized and mixed, water is added and well kneaded, and then granulated and dried to obtain granules. Formulation Example 3 Compound A 1.5 parts, Compound B 2 parts, synthetic hydrous silicon oxide
1 part, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 63.5 parts of kaolin clay are thoroughly pulverized and mixed, water is added and the mixture is well kneaded, and then granulated and dried to obtain granules.

Formulation Example 4 Compound A 2 parts, Compound B 17 parts, synthetic hydrous silicon oxide
1 part, 2 parts of calcium lignin sulfonate, 25 parts of bentonite and 53 parts of kaolin clay are well pulverized and mixed, water is added and well kneaded, and then granulated and dried to obtain granules. Formulation Example 5 Compound A 0.3 parts, Compound B 2.5 parts, Kaolin clay 86
Parts and 11.2 parts of talc are well pulverized and mixed to obtain a powder. Formulation Example 6 Compound A 0.5 part, Compound B 1 part, Kaolin clay 88
Parts and 10.5 parts of talc are well pulverized and mixed to obtain a powder. Formulation Example 7 Compound A 1 part, Compound B 1.5 parts, Kaolin clay 88
Parts and 9.5 parts of talc are well pulverized and mixed to obtain a powder.

Formulation Example 8 5 parts of compound A, 20 parts of compound B, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethyl cellulose) and 69 parts of water are mixed and wet pulverized until the particle size becomes 5 μm or less. To obtain a suspension. Formulation Example 9 15 parts of compound A, 60 parts of compound B, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 20 parts of synthetic hydrous silicon oxide are well pulverized and mixed to obtain a wettable powder. Formulation Example 10 10 parts of compound A, 30 parts of compound B, 14 parts of polyoxyethylene styryl phenyl ether, 6 parts of calcium dodecylbenzenesulfonate and 40 parts of xylene are mixed to obtain an emulsion.

Test Example 1 A plastic pot was filled with sandy loam soil, and rice (Kinki 33
No.) was sowed and grown in a greenhouse for 20 days. The reagent solution made into a suspension according to Formulation Example 8 was diluted with water to a predetermined concentration and sprayed on foliage so as to adhere sufficiently to the leaf surface of rice seedlings. After air-drying with a chemical solution, the sclerotium of the wilt fungus was inoculated into the strain source. After inoculation, after keeping at 27 ° C and high humidity for 10 days, the degree of disease (%)
investigated. The results are shown in Table 1.

[Table 1]

Test Example 2 Wagner pots of 1/10000 are were filled with sandy loam soil, watered, and 2-leaf stage rice (Kinki No. 33) was transplanted and grown in a greenhouse for 7 days. Then, each pot was subjected to water surface treatment with a reagent agent made into granules according to Formulation Example 2. Seven days after the treatment, the strain roots were inoculated with the sclerotia of the bacterial wilt disease. 27 ° C after inoculation
After being kept under high humidity for 10 days, the disease severity (%) was investigated.
The results are shown in Table 2.

[Table 2] As can be seen from the results of Table 1 and Table 2, the fungicide composition of the present invention has excellent bactericidal efficacy due to its synergistic effect.

Test Example 3 A plastic pot was filled with sandy loam, and rice (Kinki 33
No.) was sowed and grown in a greenhouse for 20 days. The reagent solution made into a wettable powder according to Formulation Example 9 was diluted with water to a predetermined concentration (Compound A / Compound B; 150 ppm / 200 ppm) and sprayed on foliage so that it was sufficiently attached to the leaf surface of rice seedlings. After air-drying the drug solution, a spore suspension of blast fungus was spray-inoculated. After inoculation,
After keeping the temperature at 24 ° C. and high humidity for 10 days, the degree of disease (%) was investigated and found to be 0%.

[0017]

The fungicidal composition of the present invention is extremely effective in controlling rice diseases such as blight and blast.

Claims (2)

[Claims] 1. The formula: And a pyrazole compound represented by the formula: The bactericidal composition comprising a methoxyiminoacetic acid amide compound represented by the formula (1) as an active ingredient. 2. The fungicide composition according to claim 1 for controlling rice diseases.