JP2002003310A - Insecticidal/miticidal composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an insecticidal/miticidal composition having an excellent synergistic effect through mixing active ingredients together, therefor capable of expanding farmland area to be applied therewith. SOLUTION: This insecticidal/miticidal composition comprises a strobilurin- based agent and a chlorfenapyr as the active ingredients, having excellent controlling effect on insect pests for various fruit trees and vegetables, in particular, having highly an synergistic ovicidal effect exceeding an additional effect afforded when merely mixing the active ingredients together on spider mites.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pesticidal acaricide composition for agricultural and horticultural use which exhibits a synergistic effect by mixing two kinds of pesticidal and mite-killing active ingredients. Insecticide and acaricide compositions.

[0002]

BACKGROUND OF THE INVENTION Strobilurins are respiratory inhibitors that inhibit complex III of the mitochondrial electron transport system.
Many compounds having bactericidal activity are known. Compounds having insecticidal / miticidal activity are disclosed in WO96 / 16047 and the like. However, the above known insecticidal acaricidal compounds do not have sufficient ovicidal activity against spider mites. Chlorfenapyr has also been used as an insecticidal acaricide, but its ovicidal activity against spider mites is not practically sufficient.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a synergistic ovicidal effect by mixing two kinds of insecticidal and mite-killing active ingredients,
It is an object of the present invention to provide an insecticidal and acaricide composition which is excellent in effect and can be used in a field.

[0004]

Means for Solving the Problems The present inventors have found that an insecticidal and acaricide composition containing a strobilurin-based agent and chlorfenapyr as active ingredients can achieve the above-mentioned object, and conducted further studies. The present invention has been found to have an excellent controlling effect on various fruit trees and pests of cannabis, and has an excellent synergistic effect on spider mites, especially the additive effect obtained when simply mixed. did.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The strobilurin-based agent used in the present invention includes methyl (E) -2- [2- (2-isopropoxy-6-trifluoromethylpyrimidinyl-4).
-Oxymethyl) phenyl] -3-methoxyacrylate. The insecticidal acaricide composition according to the present invention,
It can be used to control agricultural pests, sanitary pests, storage pests, clothing pests, house pests, etc.
Has an ovicidal effect. The following are typical examples. Lepidopteran pests, for example, Spodoptera litura, Spodoptera litura, Tamanayaga, Aomushi, Tamanaginiwawa, Konaga, chanokokakumamonhamaki, chahamaki, peach sine moth, pear sapling, mikanhamogiga, chanhohosogah, chinmonhogaiga, squirrel, squirrel, squirrel Hemiptera pests, e.g., Chlamydomonas reinhardtii, Futen tennenium lepidoptera, etc. Coleoptera pests, e.g.
Colorado potato beetle, rice water weevil, weevil weed, adzuki beetle, beetle, beetle, tobacco beetle, leaf fly beetle, pine beetle, squirrel beetle, cochnust, cotton weevil, etc. Citrus fruit flies, seed flies, rice leaf flies, Drosophila melanogaster, sand flies,
Coleoptera mosquitoes, Aedes aegypti, Aedes aegypti, etc. Thysanoptera pests, for example, Thrips palmi, Thrips palmi, Thrips thrips, Citrus thrips, etc. , Black cockroaches, Tonosama grasshoppers etc. Isoptera pests, for example, house termites, Yamato termites, etc. Leptile pests, for example, human fleas, lice, for example,
Mites, for example, spider mites, red spider mite, Kanzawa spider mite, mandarin spider mite, apple spider mite, mandarin mite, apple rust mite, chanaganogasamidani, chanoko mite, Previpalpus spp., Eotetranicus spp. For example, the sweet potato nematode, the nematode nematode, the soybean cyst nematode, the rice singing nematode, the pine wood nematode, etc. In the form of a conventional formulation containing each single active ingredient for mixing. And as such a form, a wettable powder, a liquid,
Emulsions, suspensions, powders, foams, pastes,
Granules, water dispersible granules, aerosols, microcapsules, seed coating agents, smokers and the like can be mentioned. These preparations can be manufactured by a known method. Such methods include, for example, adding the active compound to an additive, ie, a liquid diluent, a liquefied gas diluent, a solid diluent, or a carrier, optionally a surfactant, ie, an emulsifier and / or dispersant / or foam forming agent. It is performed by mixing using an agent. When water is used as a developing agent, for example, an organic solvent can also 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, methylene chloride, 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 or cyclohexanone), strong polar solvents (eg, dimethylformamide, dimethyl sulfoxide, etc.) and water can also be mentioned. The liquefied gas diluent is a gas at normal temperature and pressure, examples of which include butane, propane, nitrogen gas, carbon dioxide, and aerosol propellants such as halogenated hydrocarbons. Examples of the solid diluent include soil natural minerals (eg, kaolin, clay, talc, chalk, quartz, attapull guide, montmorillonite, or diatomaceous earth), and soil synthetic minerals (eg, highly dispersed silicic acid, alumina, silicate, and the like). be able to. As the emulsifier and / or foaming agent, nonionic and anionic emulsifiers (for example, polyoxyethylene fatty acid esters, polyoxyethylene fatty acid alcohol ethers (for example, alkylaryl polyglycol ethers, alkyl sulfonates,
Alkyl sulfates, aryl sulfonates, etc.)) and albumin hydrolysis products. Dispersants include, for example, lignin sulfite waste liquors and methylcellulose. Fixatives can also be used in the formulation (powder, granules) and include carboxymethylcellulose and natural and synthetic polymers such as gum arabic, polyvinyl alcohol and polyvinyl acetate. . Coloring agents can also be used, such as inorganic pigments (e.g., iron oxide, titanium oxide and Prussian blue), and organic dyes such as alizarin dyes, azo dyes or metal phthalocyanine dyes, and also their dyes. ,
Trace elements may be mentioned, such as salts of iron, manganese, boron, copper, cobalt, molybdenum, zinc and the like. The agricultural and horticultural insecticidal acaricide compositions of the present invention can be used in their commercially useful formulations and in the use forms adjusted by these formulations to provide other active compounds such as insecticides, baits, fungicides, fungicides, etc. It can also be a mixture with acaricides, nematicides, fungicides, growth regulators or herbicides. here,
Examples of the insecticide include carbamates, carboxylates, chlorinated hydrocarbons, and insecticides produced by microorganisms. Furthermore, the agricultural and horticultural fungicide composition of the present invention can be used as a mixture with a synergist. The synergist need not be active per se, but is a compound that amplifies the use of the active compound.

[0006]

EXAMPLES Next, some examples of the composition of the present invention will be described. However, the additives and the addition ratio are not limited to these examples, but can be varied in a wide range. Parts in Formulation Examples are parts by weight. Example 1 Water dispersant Compound 1 30 parts Compound 2 5 parts Clay 50 parts Lignin sulfonate sodium 10 parts Alkyl naphthalene sulfonate 5 parts By mixing and dissolving the above, a wettable powder containing 35% of the active ingredient is obtained. Test compound Compound 1: Methyl (E) -2- [2- (2-isopropoxy-6-trifluoromethylpyrimidinyl-4-oxymethyl) phenyl] -3-methoxyacrylate Compound 2: Chlorfenapyr

[0007]

EFFECT OF THE INVENTION Test Example 1 Egg killing test against Kanzawa spider mite A kidney bean (variety: Naga quail) is placed in a glass petri dish with a diameter of 9 cm with the cut leaves facing up, and absorbent cotton containing water is placed on the cut end of the petiole. Was. The back side of the leaf was surrounded by a tangle foot (Fuji Tangyo Fuji Tangle) to create a place for inoculation of spider mites, and 15 adult female Kanzawa spider mites were inoculated with a small brush. On the day after the inoculation, the female adults were removed and the number of eggs produced was counted. Then, a chemical solution adjusted to a predetermined concentration was sprayed using a rotary spray tower so as to have an adhesion amount of 2 mg / cm 2. Seven days after spraying, dead eggs were counted using a stereomicroscope to calculate the ovicidal rate. The test was performed in duplicate. In this test, the ovicidal rate used was calculated based on the following formula.

[0008]

[Equation 1] Egg kill rate = (1−egg rate in the drug-treated group / egg rate in the untreated group) × 100 To prove the synergistic effect, the additive degree of the effect calculated from the effect of each component was determined. This was done by comparison with the experimentally determined degree of action of the active substance combination. The degree of the additive effect was evaluated by the formula of Colby (Weeds., 15, 20-22, 1967).

[0009]

[Equation 2] Theoretical value (E) = X + Y − ((X × Y) / 100) where, X = Egg killing rate by compound 1 in the case of active ingredient dose p = Y = active ingredient dose q The ovicidal rate by compound 2 in the case The expected control value (theoretical value) by compound 1 + 2 in the case of E = p + q is shown. If the observed value is higher than the theoretical value (E), the combination mixture has a synergistic effect. Table 1 shows the test results.

[0010]

[Table 1] The above observed values showed a higher control value than the theoretical value (E) of Colby, indicating that the agricultural and horticultural insecticidal and acaricide composition of the present invention has an excellent synergistic action. ADVANTAGE OF THE INVENTION According to this invention, the synergistic effect beyond the additive effect obtained only by mixing can be obtained, and it becomes possible to reduce the amount of used medicine. In addition, mixing can provide an ovicidal effect that is not present in each drug, and can be used in a field.

Claims (2)

[Claims] 1. An insecticidal and acaricide composition comprising, as active compounds, a compound selected from strobilurins and chlorfenapyr. 2. The method of claim 1, wherein the strobilurin is methyl (E)-
2- [2- (2-isopropoxy-6-trifluoromethylpyrimidinyl-4-oxymethyl) phenyl] -3
The insecticidal acaricide composition according to claim 1, which is -methoxy acrylate.