JP4024352B2 - Agricultural fungicide composition - Google Patents

Description

【００３７】
試験例２
常法により育苗箱で育成したイネ苗（品種：にいがたわせ）に、試験例１と同様にして調製した所定量の試験薬剤を上から均一に散布した。葉に付着した薬剤を払い落し、軽く散水してから、田植え機にて移植した。移植後は通常の管理を行い、薬害の程度を観察した。
【００３８】
イネに対する薬害の評価は試験例１と同様にして行なった。
【００３９】
結果を第２表に示す。
【００４０】
【表２】

【００４１】
製剤例１
チフルザミド（１０部）、ダイムロン（７．５部）、ベントナイト（モンモリトナイト）（３０部）、タルク（滑石）（５０部）及びリグニンスルホン酸塩（２．５部）の混合物に、水（２５部）を加え、良く捏化し、押し出し式造粒機により、１０〜４０メッシュの粒状として、４０〜５０℃で乾燥して粒剤とする。
【００４２】
製剤例２
チフルザミド（１０部）、ダイムロン（２部）、ベントナイト（モンモリトナイト）（３０部）、タルク（滑石）（５６部）及びリグニンスルホン酸塩（２部）の混合物に、水（２５部）を加え、良く捏化し、押し出し式造粒機により、１０〜４０メッシュの粒状として、４０〜５０℃で乾燥して粒剤とする。
【００４３】
製剤例３
チフルザミド（１０部）、ダイムロン（１０部）、リリグニンスルホン酸ナトリウム（３０部）、ベントナイト（１５部）、及び焼成ケイソウ土粉末（３５部）を十分に混合し、水を加え、０．３ｍｍのスクリーンで押し出し乾燥して水和顆粒とする。
【００４４】
製剤例４
チフルザミド（１０部）、ダイムロン（５部）、ベントナイト（モンモリトナイト）（３３部）、タルク（滑石）（５０部）及びリグニンスルホン酸塩（２部）の混合物に、水（２５部）を加え、良く捏化し、押し出し式造粒機により、１０〜４０メッシュの粒状として、４０〜５０℃で乾燥して粒剤とする。
【００４５】
製剤例５
カルプロパミド（２部）、イミダクロプリド（１部）、チフルザミド（２部）、ダイムロン（１．５部）、ベントナイト（モンモリロナイト）（３５部）、タルク（滑石）（５６．５部）及びリグニンスルホン酸（２部）の混合物に、水（２５部）を加えよく捏化し、押し出し式造粒機により、１０〜４０メッシュの粒状として、４０〜５０℃で乾燥して粒剤とする。
【００４６】
【発明の効果】
本発明の農業用殺菌剤は、上記生物試験例に示したように、イネに対する安全性が高く、かつ優れた殺菌・殺カビ作用を有する。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an agricultural fungicide composition with improved safety for cultivated plants. More specifically, the present inventor relates to an agricultural fungicide composition in which the phytotoxicity action on useful crops is suppressed and a method for controlling plant diseases.
[0002]
[Background Art and Problems to be Solved by the Invention]
In paddy rice cultivation, in order to reduce the labor for spraying the drug, a drug that can control pests for a long time after transplanting to a paddy field has been developed by applying the drug to a seedling box. However, rice grown in a seedling box is prone to phytotoxicity due to high temperature, dense planting, and the like. Therefore, development of a drug having higher safety not only for the environment but also for rice is desired.
[0003]
2 ', 6'-Dibromo-2-methyl-4'-trifluoromethoxy-4-trifluoromethyl-1,3-thiazole-5-carboxyanilide (generic name: tifluzamide) has fungicidal and fungicidal activity Is already known (see Japanese Patent Publication No. 4-15228, British Crop Protection Conference, Pest and Diseases 1992, 429-432). However, tifluzamide may cause phytotoxicity to rice when applied to seedling boxes.
[0004]
On the other hand, 1- (1-methyl-1-phenylethyl) -3-p-toluylurea (generic name: Daimlon) is well known as a herbicide for paddy fields effective against fireflies and pine trees. It is also known to have an action of reducing the phytotoxicity of the herbicide (see Japanese Patent Publication No. 48-35454).
[0005]
[Means for Solving the Problems]
The present inventors have found that by using tifluzamide in combination with Daimlon, the phytotoxicity of tifluzamide on rice is reduced and a very good bactericidal and fungicidal action is exhibited. Thus, the present invention relates to 2 ′, 6′-cybromo-2-methyl-4′-trifluoromethoxy-4-trifluoromethyl-1,3-thiazole-5-carboxyanilide and 1- (1-methyl-1 The present invention provides an agricultural fungicide composition comprising -phenylethyl) -3-p-toluyl urea as an active ingredient.
[0006]
Surprisingly, by combining tifluzamide with Daimlon, the phytotoxicity of tifluzamide on rice can be reduced, and it can be applied more safely to cultivated plants.
[0007]
The ratio of Daimlone to tifluzamide can be varied over a relatively wide range. Generally, 0.1-3 parts by weight, preferably 0.5-1.5 parts by weight of Daimlon can be used per 1 part by weight of tifluzamide.
[0008]
The bactericidal composition of the present invention has a very good bactericidal and fungicidal action, for example, Psmodiophoromycetes, Omycetes, Chytridiomycetes, Zygomycetes, and Zygomycetes It can be mainly used to control phytopathogenic fungi such as Ascomycetes, Basidiomycetes, Deuteromycetes and the like. In particular, the fungicide composition of the present invention combats diseases of cereals such as Thanatephorus, Rhizoctonia, Puccinia, Corticium, and Ustilago. Suitable for
[0009]
Since the plant shows good resistance to the fungicide composition of the present invention at a concentration necessary to control the disease of the plant, by using the fungicide composition of the present invention, the above-ground part of the plant, for vegetables Both propagation material and seeds and soil can be sterilized.
[0010]
The agricultural fungicide composition according to the present invention comprises a wettable powder, emulsion, tablet, suspension, powder, foam, paste, granule, aerosol, polymerizable substance and seed composition for encapsulation. It can be formulated into ordinary preparations such as very fine capsules in the product, and dosage forms such as ULV preparations. Furthermore, the composition of the present invention may be prepared by tank-mixing the optionally formulated tifluzamide and the optionally formulated dimrone immediately before use.
[0011]
These formulations are prepared in a manner known per se, for example by combining the active compound or a combination of active compounds with a bulking agent, ie a liquid solvent, a liquefied gas under pressure and / or a solid carrier and optionally a surfactant. Ie, mixed with emulsifiers and / or dispersants, and / or foam formers and optionally shaped.
[0012]
Examples of the liquid solvent include aromatics such as xylene, toluene and alkylnaphthalene; chlorinated aromatics or chlorinated aliphatic hydrocarbons such as chlorobenzene, chloroethylene and methylene chloride; aliphatic hydrocarbons such as cyclohexane; Paraffins such as mineral oil fractions; alcohols such as butanol and glycol and ethers and esters thereof; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; strong polar solvents such as dimethylformamide and dimethyl sulfoxide; and Water is generally suitable. In addition, when using water as a solvent, an organic solvent can be used as an auxiliary solvent, for example.
[0013]
As the liquefied gas extender, for example, halogenated hydrocarbons and liquids that are gaseous at ambient temperature and atmospheric pressure, such as aerosol propellants such as butane, propane, nitrogen, carbon dioxide, are used.
[0014]
Examples of the solid carrier include natural minerals such as kaolin, clay, talc, chalk, quartz, attapulgite, montmorillonite, and diatomaceous earth; and synthetic minerals such as highly dispersed silicon, alumina, and silicic acid.
[0015]
Solid carriers for granules include, for example, crushed and fractionated natural rocks such as calcite, marble, pumice, gypsum, dolomite; synthetic granules of inorganic and organic powders; sawdust, coconut shells, Granules of organic materials such as corn cobs and tobacco stems can be used.
[0016]
Examples of emulsifiers and / or foaming agents include nonionic and anionic emulsifiers [eg, polyoxyethylene fatty acid esters, polyoxyethylene fatty acid alcohol ethers (eg, alkylaryl polyglycol ethers, alkyl sulfonates, alkyl sulfates, aryl sulfones). Acid salts)], and albumin hydrolysis products.
[0017]
As the dispersing agent, for example, lignin-sulfite pulp waste liquid, methylcellulose and the like can be used.
[0018]
Also, adhesives such as carboxymethyl cellulose; natural or synthetic polymers in the form of powder, granules or latex such as gum arabic, polyvinyl alcohol, polyvinyl acetate; natural or synthetic phospholipids such as kephalin and lecithin, and other additives Mineral oils and vegetable oils can also be used in the formulation.
[0019]
Furthermore, for example, inorganic pigments such as iron oxide, titanium oxide, Prussian blue; colorants such as organic dyes such as alizarin dyes, azo dyes, metal phthalocyanine dyes, and iron, manganese, boron, copper, cobalt, molybdenum It is also possible to add a micronutrient such as a metal salt such as zinc.
[0020]
Formulations generally can contain from 0.1 weight percent to 95 weight percent, preferably from 0.5 weight percent to 90 weight percent, of the active compound.
[0021]
The agricultural sterilizing composition of the present invention is further used in combination with or mixed with other active compounds such as other sterilizing / fungicidal agents, insecticides, acaricides, herbicides, fertilizers, plant growth regulators, and the like. You can also
[0022]
Examples of bactericidal compounds that can be used or mixed together include
(1RS, 3SR) -2,2-dichloro-N- [1- (4-chlorophenyl) ethyl] -1-ethyl-3-methylcyclopropanecarboxamide (generic name: carpropamide),
5-methyl-1,2,4-triazolo [3,4-b] benzothiazole (generic name: tricyclazole),
3-allyloxy-1,2-benzisothiazole-1,1-dioxide (generic name: propenazole), etc.
Examples of insecticides and acaricides are:
1- (6-chloro-3-pyridylmethyl) -N-nitroimidazolidin-2-ylideneamine (generic name: imidacloprid),
2-isopropoxyphenyl-N-methylcarbamate (generic name: propoxur),
O, O-diethyl-S-2- (ethylthio) ethyl phosphorodithioate (generic name: ethylthiomethone),
1,3-bis (carbamoylthio) -2- (N, N-dimethylamino) propane hydrochloride (generic name: cartap) and the like can be mentioned.
[0023]
The agricultural fungicide composition of the present invention may be used as such or as a ready-to-use solution, emulsified concentrate, emulsion, suspension, wettable powder, soluble powder, tablet, granule or the like. It can be applied in the form or use form prepared therefrom.
[0024]
Can they be irrigated, sprayed, sprayed, or dispersed as, for example, a powder for dry seed treatment, a water solution for seed treatment, a water-soluble powder for seed treatment, a water-dispersible powder for slurry treatment, etc. Alternatively, it can be applied in the usual manner by coating.
[0025]
The combination of active compounds tifluzamide and diemron in the present invention can be used in the form of a composition according to the present invention containing both of these active compounds when applied to plants, or tifluzamide and diemron are in the form of separate formulations. May be applied simultaneously or sequentially.
[0026]
In the treatment of plant parts, the active compound concentration of the use forms can be varied within a substantial range, but is generally 1 to 0.0001% by weight, preferably 0.5 to 0.001% by weight. %. Moreover, when treating seeds, it is preferable to use a total of 0.001 to 50 g of active compound per kilogram of seeds.
[0027]
For application in nursery boxes, it is generally appropriate to apply at an active compound concentration of 0.00001 to 0.1% by weight, preferably 0.0001 to 0.02% by weight.
[0028]
In the above treatment, the application amount of each active compound is generally 1 to 7 g / are, preferably 2 to 4 g / are for tifluzamide, and generally 0.1 to 10 g / are, preferably 0.2 to dimlon. It is appropriate to apply within the range of 7 g / A.
[0029]
The favorable bactericidal and fungicidal action of the agricultural fungicide composition of the present invention will be described more specifically with reference to the following examples. “Parts” is parts by weight.
[0030]
【Example】
Test Example 1: Strain-source treatment and phytotoxicity-reducing effect test for rice blight disease Preparation of test compounds:
Add water (25 parts) to a mixture of tifluzamide (10 parts), bentonite (montmorite) (30 parts), talc (talc) (58 parts) and lignin sulfonate (2 parts), and hatch and extrude well. It is made into a granule of 10 to 40 mesh by a type granulator, and dried at 40 to 50 ° C. to obtain a granule.
[0031]
Granules were obtained in the same manner for Daimlon.
[0032]
Test method:
Inside the greenhouse, paddy soil is filled in a vinyl black pot with a diameter of 12 cm, and watering is performed to the extent that the entire soil becomes wet. Make a 3cm hole with your finger in the center of the pot. Rice seedlings (variety: Nihonbare, plant height 15 centimeters) were transplanted as 5 strains, and at the same time, a predetermined amount of drug was treated at the root. After covering, the water depth was set to 3 centimeters, and this water depth was maintained during the test period. The phytotoxicity to rice was investigated 3 weeks after the drug treatment. Six weeks after the chemical treatment, the plant was inoculated with rice blight fungus (Pellicularia sasakii) cultured in barley medium. Ten days after the inoculation, the morbidity per pot was classified and the control value (%) was obtained.
[0033]
A control value of 0% indicates that the disease is the same as or more than that in the untreated area, and 100% indicates that the disease is not at all.
[0034]
Regarding the degree of phytotoxicity to rice, 0% indicates no phytotoxicity, less than 10% indicates phytotoxicity within an acceptable range, and 100% indicates complete death.
[0035]
The results are shown in Table 1.
[0036]
[Table 1]

[0037]
Test example 2
A predetermined amount of the test drug prepared in the same manner as in Test Example 1 was uniformly sprayed from above onto rice seedlings (variety: Niigatake) grown in a seedling box by a conventional method. The drug adhering to the leaves was removed and watered gently, and then transplanted with a rice planting machine. After transplantation, normal management was performed and the degree of phytotoxicity was observed.
[0038]
Evaluation of phytotoxicity to rice was carried out in the same manner as in Test Example 1.
[0039]
The results are shown in Table 2.
[0040]
[Table 2]

[0041]
Formulation Example 1
To a mixture of tifluzamide (10 parts), Daimron (7.5 parts), bentonite (montmorite) (30 parts), talc (talc) (50 parts) and lignin sulfonate (2.5 parts), water ( 25 parts), well hatched, and dried at 40-50 ° C. as granules of 10-40 mesh using an extrusion granulator to form granules.
[0042]
Formulation Example 2
Water (25 parts) is added to a mixture of tifluzamide (10 parts), Daimron (2 parts), bentonite (montmorite) (30 parts), talc (talc) (56 parts) and lignin sulfonate (2 parts). In addition, it hatches well and is dried at 40-50 ° C. as granules of 10-40 mesh by an extrusion granulator to form granules.
[0043]
Formulation Example 3
Mix thoroughly thifluzamide (10 parts), Daimlon (10 parts), sodium lilignin sulfonate (30 parts), bentonite (15 parts), and calcined diatomaceous earth powder (35 parts), add water, 0.3 mm Extrude and dry with a screen to make hydrated granules.
[0044]
Formulation Example 4
Water (25 parts) is added to a mixture of tifluzamide (10 parts), Daimron (5 parts), bentonite (montmorillonite) (33 parts), talc (talc) (50 parts) and lignin sulfonate (2 parts). In addition, it hatches well and is dried at 40-50 ° C. as granules of 10-40 mesh by an extrusion granulator to form granules.
[0045]
Formulation Example 5
Carpropamide (2 parts), imidacloprid (1 part), tifluzamide (2 parts), Daimlon (1.5 parts), bentonite (montmorillonite) (35 parts), talc (talc) (56.5 parts) and lignin sulfonic acid ( 2 parts), water (25 parts) is added, and it hatches well, and it is made into a granule by drying at 40-50 degreeC as a 10-40 mesh granule with an extrusion-type granulator.
[0046]
【The invention's effect】
As shown in the above biological test examples, the agricultural fungicide of the present invention has high safety against rice and has an excellent fungicidal and fungicidal action.

Claims (3)

2 ′, 6′-Dibromo-2-methyl-4′-trifluoromethoxy-4-trifluoromethyl-1,3-thiazole-5-carboxyanilide and 1- (1-methyl-1-phenylethyl) -3 An agricultural fungicide composition containing p-toluyl urea as an active ingredient. 2 ′, 6′-Dibromo-2-methyl-4′-trifluoromethoxy-4-trifluoromethyl-1,3-thiazole-5-carboxyanilide and 1- (1-methyl-1-phenylethyl) -3 -Plant disease control method characterized by applying p-toluyl urea in combination. The method for controlling plant diseases according to claim 2, which is applied to a seedling box.