JP2001114612A - Germicidal composition for agriculture and horticulture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a germicidal composition for agriculture and horticulture, capable of providing synergistic effects more than the additional effects predicted when two or more kinds of germicidal components are mixed by mixing the two or more kinds of the germicidal components. SOLUTION: This germicidal composition for the agriculture and the horticulture is characterized in that the composition contains at least one kind selected from benzimidazole-based chemicals and at least one kind selected from anilinopyrimidine-based chemicals as active ingredients.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a fungicide composition for agricultural and horticultural use which exhibits a synergistic effect by mixing two kinds of fungicidally active ingredients.

[0002]

BACKGROUND OF THE INVENTION Benzimidazoles are compounds that inhibit mitosis by binding to microtubule proteins of pathogenic bacteria and have a wide range of bactericidal activity. It has become.

[0003] On the other hand, anilinopyrimidine fungicides are fungicides that are considered to have an inhibitory effect on methionine biosynthesis and secretion of cell wall degrading enzymes. This drug is known to show a high preventive effect against harmful agricultural and horticultural microorganisms such as powdery mildew, scab and gray mold, but its therapeutic effect is not sufficient.

[0004]

SUMMARY OF THE INVENTION The present invention provides a fungicidal composition for agricultural and horticultural use which is capable of obtaining a synergistic effect exceeding the expected additive effect by simply mixing these fungicidal components. The purpose is to provide. That is, the present invention provides a fungicide composition for agricultural and horticultural use that enables a reduction in the amount of drug used, and obtains an excellent therapeutic effect higher than expected from each compound, thereby expanding the field of use in the field. It is.

[0005]

SUMMARY OF THE INVENTION The present invention provides an agricultural and horticultural composition comprising at least one selected from benzimidazole-based agents and at least one selected from anilinopyrimidine-based agents as active ingredients. It is a fungicide composition for use.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. In the agricultural / horticultural fungicide composition of the present invention, the benzimidazole-based drug refers to a group of compounds having a wide range of fungicidal activity by binding to microtubule proteins of pathogenic bacteria to inhibit mitosis. Such compounds include, for example, thiophanate methyl, benomyl, MBC, thiabendazole and the like.

[0007] Anilinopyrimidine drugs are a group of compounds which are considered to have bactericidal activity by inhibiting methionine biosynthesis and inhibiting secretion of cell wall degrading enzymes. Such compounds include, for example, mepanipyrim, pyrimethanil, cyprodinil and the like.

The mixing ratio of the benzimidazole drug and the anilinopyrimidine drug is usually 1: 1 by weight.
100 to 100: 1, preferably 1:10 to 1
0: 1.

The fungicide composition for agricultural and horticultural use according to the present invention can control a wide range of plant diseases. Typical examples thereof include the following. (1) rice diseases blast (Pyricularia oryzae) Sheath Blight (Rhizoctonia solani) bakanae (Gibberella fujikuroi) Gomaha blight (Cochliobolus miyabeanus) (2) barley diseases loose smut (Ustilago nuda)

(3) Diseases of wheat Red mold ( Gibberella zeae ) Red rust ( Puccinia recondita ) Eye spot disease ( Pseudocercosporella herpotrichoid )
es ) Blight blight ( Leptosphaeria nodorum ) Powdery mildew ( Erysiphe graminis f.sp. tritici ) Red snow rot ( Micronectriella nivalis ) (4) Disease of kidney beans Gray mold ( Botrytis cinerea ) Sclerotinia sclerotiorum 5) Diseases of adzuki beans Gray mold ( Botrytis cinerea ) Sclerotia ( Sclerotinia sclerotiorum )

(6) Soybean disease Sclerotinia sclerotiorum (7) Peanut disease Brown spot disease ( Mycosphaerella arachidis ) (8) Sugar beet disease Brown spot disease ( Cercospora beticola ) (9) Cucumber disease Disease ( Sphaerotheca fuliginea ) Sclerotia ( Sclerotinia sclerotiorum ) Gray mold ( Botrytis cinerea )

(10) Disease of tomato Leaf mold ( Cladosporium fulvum ) Gray mold ( Botrytis cinerea ) (11) Eggplant disease Black blight ( Corynespora melongenae ) Gray mold ( Botrytis cinerea ) (12) Onion disease Gray Rot rot ( Botrytis allii ) (13) Strawberry disease Powdery mildew ( Sohaerotheca humuli ) Gray mold ( Botrytis cinerea )

(14) Diseases of apple Powdery mildew ( Podosphaera leucotricha ) Scab ( Venturia inaequalis ) Moniliania mali (15) Oyster disease Anthracnose ( Gloeosporium kaki ) (16) Peach disease ( Monilinia fructicola )

(17) Grape diseases Powdery mildew ( Uncinula necator ) Downy mildew ( Plasmopara viticola ) Gray mold ( Botrytis cinerea ) (18) Diseases of pear Red scab ( Gymnosporangium asiaticum ) Black spot ( Alternaria kikuchiana ) 19) Disease of tea Ring spot disease ( Pestalotia theae ) Anthracnose ( Colletotrichum theae-sinensis )

(20) Diseases of Citrus Scab ( Elisinoe fawcetti ) Blue mold ( Pennisillium italicum ) Gray mold ( Botrytis cinerea ) (21) Diseases of western mackerel Sclerotinia borealis

The fungicidal composition for agricultural and horticultural use according to the present invention may be in the form of a normal preparation of a composition containing at least two of a benzimidazole drug and an anilinopyrimidine drug as fungicidal active ingredients, or a benzimidazole drug. Ordinary formulation forms containing a drug and an anilinopyrimidine-based drug as active ingredients can be used by mixing (so-called tank mix) at the time of use.

Such formulations include emulsions, wettable powders,
Examples include solutions, emulsions, suspensions, powders, foams, pastes, granules, aerosols, microcapsules, seed coatings, and smokers.

These preparations can be prepared in a known manner, for example by adding the active compound as an additive, a liquid diluent, a liquefied gas diluent, a solid diluent or various additives such as a carrier, and optionally an emulsifier and / or dispersant / foam. By mixing with a surfactant such as a forming agent, a predetermined preparation can be obtained by a known method. When water is used, an organic solvent can be used as an auxiliary solvent.

Examples of the liquid diluent include aromatic hydrocarbons (eg, xylene, toluene, alkylnaphthalene, etc.), chlorinated aromatic or chlorinated aliphatic hydrocarbons (eg, chlorobenzenes, ethylene chlorides, chlorides). Methylene, etc.), aliphatic hydrocarbons (eg, cyclohexane, etc., paraffins (eg, mineral oil fraction, etc.)), alcohols (eg, butanol, glycol and their ethers, esters, etc.), ketones (eg, acetone, methyl ethyl ketone, Methyl isobutyl ketone, cyclohexanone, etc.), polar solvent (for example, dimethylformamide,
Dimethyl sulfoxide) and water.

The liquefied gas diluent is a gas at normal temperature and normal pressure,
Examples include aerosol propellants such as butane, propane, nitrogen gas, carbon dioxide, halogenated hydrocarbons.

Examples of the solid diluent include soil natural minerals (eg, kaolin, clay, talc, chalk, quartz, attapull guide, montmorillonite, diatomaceous earth) and soil synthetic minerals (eg, highly dispersed silicic acid, alumina, silicate, etc.). Can be mentioned.

Examples of the emulsifier and / or foaming agent include nonionic and anionic emulsifiers (eg, polyoxyethylene fatty acid esters, polyoxyethylene fatty acid alcohol ethers (eg, alkylaryl polyglycol ethers, alkyl sulfonates, Alkyl sulfates, aryl sulfonates, etc.]], and albumin hydrolysis products.

Examples of the dispersant include lignin sulfites and methyl cellulose. Fixing agents can also be used in preparations (powder, granules, emulsions, etc.). As such a fixing agent, carboxymethyl cellulose, natural and synthetic polymers (for example, gum arabic, polyvinyl alcohol, polyvinyl acetate, etc.) can be used.

Further, a coloring agent may be used, for example, inorganic pigments such as iron oxide, titanium oxide and Prussian blue, organic dyes such as alizarin dye, azo dye or metal phthalocyanine dye, and iron, manganese and boron thereof. , Copper, cobalt, molybdenum, zinc, and other salts.

The agricultural and horticultural fungicidal compositions of the present invention can be used in their commercially useful formulations and in the use forms prepared by these formulations to provide other active compounds such as insecticides, baits, fungicides, fungicides, etc. Mixtures with mites, nematicides, fungicides, growth regulators or herbicides can also be used.

Further, the agricultural / horticultural fungicide composition of the present invention comprises:
It can be a mixture with other synergists. The synergist need not be active per se, but is a compound that amplifies the use of the active compound.

[0027]

EXAMPLES Next, the fungicide composition for agricultural and horticultural use of the present invention will be described in more detail by way of examples. The present invention is not limited to these, and it is possible to freely change the kind of the active ingredient, the mixing ratio, the kind of the additive, the addition ratio, and the like without departing from the gist of the present invention. In addition, the part in each preparation of an Example shows a weight part.

Example 1 Wettable powder thiophanate methyl 56 parts Mepanipyrim 14 parts Clay 17 parts Lignin sulfonate 10 parts Alkylnaphthalene sulfonate 3 parts The above ingredients were mixed and dissolved to obtain a wettable powder having an active ingredient of 70%.

[0029]

(Effect of the Invention) (Test Example 1) Treatment test of kidney bean gray mold using cut flower vase Crop: kidney bean (cultivar: Serena) Test scale: 1 section, 1 flower container, 4 repetitions Inoculation: Bean cut magenta on cut flower vase
(1 million cells / ml) was spray-inoculated and cultured for 2 days in a 20 ° C. incubator, and then the following drug treatment was performed. Chemical treatment: The vase in which the above-mentioned gray mold was infested was immersed in a chemical solution prepared at a predetermined mixing ratio for 30 minutes and air-dried.
Thereafter, the vase was placed on a cut-out leaf of a bean housed in a petri dish and cultured for 4 days in a thermostat at 20 ° C., and the diameter of a gray mold spot formed on the leaf was measured to determine a control value. . The test results are shown in Table 1.

[0030]

(Equation 1)

In this test, the synergistic effect between the active compounds used was Colby (Weeds., 15 , 20-).
22, 1967).

[0032]

(Equation 2)

Here, X is the control value of compound 1 when the active ingredient dose is p, and Y is compound 2 when the effective dose is q.
Respectively. E represents the expected control value (theoretical value) of the compound (1 + 2) in the case of the active ingredient dose (p + q). If the observed value is higher than the theoretical value (E), the combination mixture has a synergistic effect.

[0034]

[Table 1]

As a result of the test, the wettable powder of Example 1 was found to have the above C
Since the control value was higher than the theoretical value (E) of orby, it was shown that the agricultural / horticultural fungicide composition of the present invention has an excellent synergistic action.

Therefore, according to the fungicide composition for agricultural and horticultural use of the present invention, a synergistic effect higher than the additive effect obtained by simply mixing can be obtained, and the amount of drug used can be reduced. I understood. In addition, it is possible to obtain a therapeutic effect that is more excellent than expected, and it is possible to expand the use scene in the field.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Shinsuke Sano 62-1 Sakabe, Haibara-cho, Haibara-gun, Shizuoka Pref. BC07 BC20 DA15 DD01 DD03 DD04 DE17 DF04

Claims (3)

[Claims] 1. A fungicide composition for agricultural and horticultural use comprising as active ingredients at least one selected from benzimidazole drugs and at least one selected from anilinopyrimidine drugs. 2. The benzimidazole-based agent is at least one selected from the group consisting of thiophanate methyl, benomyl, MBC and thiabendazole.
The germicidal composition for agricultural and horticultural use according to the above. 3. The fungicide composition for agricultural and horticultural use according to claim 1, wherein the anilinopyrimidine-based agent is mepanipyrim, pyrimethanil or cyprodinil.