KR950009523B1 - Acaricidal composition - Google Patents

Abstract

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Description

Astringent composition

The present invention relates to a novel acaricide composition which can effectively inhibit crops such as blemish mites, pseudo-mite mites, dust mites, black mites, and mites that damages primate crops. No-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate (hereinafter referred to as "phenpropatrine") and O, S-dimethyl-N-acetylphosphoradoid A fertilizer composition characterized by containing thioate (hereinafter referred to as "acetate.") The fertilizer composition of the present invention can be effectively used in the field of crop and horticultural crop cultivation.

Penpropatrine, one of the active ingredients of the present invention, is a synthetic pyrethroid insecticide and acaricide compound which is used to suppress harmful insects in health or when cultivating crops and horticultural crops, and is itself a housefly (Musca domestica). ), Unsanitary harmful insects such as Culex pipiens pallens, and wheel (Blattella germanica), Chilo suppressalis, Spodoptera liture, Peach black aphid (Myzus persicae), and carmine spider mite (Tetranychus) cinnabarinus) and the like are known as compounds which are useful for inhibiting insects that damage workpieces and horticultural crops (Japanese Patent Publication No. 5450/1976).

Acetate, another active ingredient used in the present invention, is called the Agricultural Chemicals Handbook (1985 Edition, pages 73-74: January 30, 1986). ), According to the Recent Data Book on Agricultural Chemicals (page 1: March 25, 1982, published by Soft Science, Inc.), such as thieves and Plutella xylostella. It is known to have inhibitory and permeable activity against insects parasitic in vegetables and insects parasitic in the citrus tree such as aphids, hairwings and the like. However, acetate shows very low activity against ticks, and its effectiveness as acaricide is very low.

Many conventional acaricides are excellent in their properties such as immediate efficacy, penetration, gas effects, etc., but they are not always satisfactory in all respects such as salvisspectrum, residual efficacy, toxicity to fish, toxicity to mammals, and the like. In addition, the use of many acaricides over a long period of time has led to the emergence of mites with stronger resistance to these acaricides everywhere. Specifically, Tetranychus urticae parasitic in fruit water, vegetables, tea, flowers, and ornamental water, kaamine spider mites, ganja and spider mites (Tetranychus kanzawai), mandarin mites (Panonychus citri), apple mites (Panonychlus ulmi), and The resistance to acaricides is markedly observed in mites such as Polyphago tarsonemus latus. For this reason, many acaricides are losing their practical utility to the mites described above.

On the other hand, as described above, phenpropatrine, which is one of the active ingredients of the present invention, has activity against mites on its own as a synthetic pyrethroid insecticide and acaricide compound. However, the fertilizing activity of fenpropatrin is lower than that of insects of lepidoptera (eg thief moth) and cicada bok (eg peach black aphid) against insects, so they are sprayed at a rate effective enough to suppress these insects. Even though it does not show efficacy against mites. As a result, in the case of using fenpropartin for the purpose of suppressing mites, it is necessary to increase the application rate, which is problematic in terms of toxicity and adverse effects on the environment.

Therefore, there has been a strong demand for the development of new acaricides that exhibit not only good efficacy against mites that have enhanced resistance due to the use of conventional acaricides at low application rates, but also have low toxicity and little adverse effects on the environment.

It is an object of the present invention to provide new acaricides that meet these needs.

Under such circumstances, the inventors of the present invention have extensively studied various compounds and found that acaricides, which contain penpropatrine and acetate as active ingredients, have a spotted mite, ganja and spider mite, tangerine mite, and broad mite. It has been found to exert an excellent effect in suppressing mites such as.

Next, the preparation method and use of the acaricide according to the present invention will be described in detail.

To prepare the acaricide of the present invention, the active ingredients used in the present invention are mixed with suitable carriers and auxiliaries such as surfactants, binders, stabilizers and the like, and the resulting mixture is then hydrated powder, emulsion concentrate, liquid formulation, sol. It is sufficient to prepare a formulation (fluid formulation), powder, DL (non-drift) powder, fine particles and the like.

The content of active ingredients in these preparations is in the range of 1 to 90% by weight for hydrated powders, emulsion concentrates, liquid preparations and sol preparations; In the range of 0.5 to 5% by weight in the case of powder, DL powder and fine particles; And in the case of granules, in the range of 1 to 10% by weight. In each of these cases, the mixing ratio of phenpropatrine and acetate is from 1: 1 to 1: 100, preferably from 1: 1 to 1:50.

As the carrier usable in the acaricide according to the present invention, all solid and liquid carriers conventionally used in crop and horticultural chemicals can be used without particular limitation.

For example, as a solid carrier, delivery of inorganic substances (e.g. kaolin, bentonite, clay, montmorillonite, talc, diatomaceous earth, mica, silica sand, ammonium sulfate, urea), powders of vegetables (e.g. soy flour, flour, wood flour, tobacco powder) , Starch, crystalline cellulose), alumina, silicates, sugar polymers, highly dispersed silicates, beeswax and the like.

As a liquid carrier, water, alcohol (e.g. methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, ethylene glycol, benzyl alcohol), aromatic hydrocarbons (e.g. benzene, toluene, xylene, Ethylbenzene, chlorobenzene, cumene, methylnaphthalene), halogenated hydrocarbons (e.g. chloroform, carbon tetrachloride, dichloromethane, chloroethylene, trichlorofluoromethane, dichlorodifluoromethane), ethers (e.g. ethyl ether, ethylene Oxides, dioxane, tetrahydrofuran), ketones (e.g. acetone, methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone), esters (e.g. ethyl acetate, butyl acetate, ethylene glycol acetate, amyl acetate), Nitriles (eg acetonitrile, propionitrile, acrylonitrile), sulfoxides (eg dimethyl sulfoxide), alcohol ethers (eg ethylene glycol monomethyl ether, Ethylene glycol monoethyl ether), aliphatic or cycloaliphatic hydrocarbons (eg n-hexane, cyclohexane), industrial gasoline (eg petroleum ether, solvent naphtha) and petroleum fractions (eg paraffin, kerosene, diesel) Can be mentioned.

In the preparation of emulsified concentrates, hydrated powders, sol formulations (fluid preparations) and the like, surface active agents (or emulsifiers) are used for the purpose of emulsification, dispersion, dissolution, hydration, foaming, lubrication, expansion, and the like. These usable surface active agents are as follows, and of course, it is not limited only to those described below.

Non-ionic system: polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, polyoxyethylene sorbitan alkyl ester, sorbitan alkyl ester, etc.

Anionic System: Alkylbenzenesulfonate, alkylsulfosuccinate, alkylsulphate, polyoxyethylene alkylsulphate, arylsulfonate, etc.

Cationic systems: alkylamines (eg laurylamine, stearyltrimethylammonium chloride, alkyldimethylbenzylammonium chloride, polyoxyethylene alkylamines, etc.)

Zwitterionic: carboxylic acids (e.g., betaine), sulfuric acid esters, etc.

In addition to these surfactants, various auxiliaries such as polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), gum arabic, polyvinylacetate, gelatin, casein, sodium alginate, tragacanth rubber and the like can be used. Furthermore, stabilizers such as antioxidants and ultraviolet absorbers may be added in appropriate amounts.

The acaricide according to the present invention may contain other acaricide components, various insecticides (eg pyrethroid, organic phosphate insecticides, carbamate insecticides, chitin synthesis inhibitors), attractants, fungicides, fungicides, herbicides, plant growth regulators, It can be used as a mixture with fertilizers, etc., by using the mixture in this way it is possible to widen the spraying range (type of pests and insects to be suppressed, the method of spraying, the time of spraying) of the acaricide.

The method of using the acaricide composition according to the present invention is as follows. The rate of application varies depending on the amount of mites produced, but it is generally 0.5-50 g / 10 aars, preferably 1-10 g / 10 aars, calculated from the total amount of active ingredients, ie phenpropatrine and acetate. For spraying, dilute with water in the case of hydrated powder or emulsified concentrate and spray the crop in the amount of 100-400 l / 10 aare at the time of mite occurrence.

The acaricide according to the present invention exhibits a synergistic inhibitory effect on mites such as spotted mite, ganja and spider mites, tangerine mites, broad mites, and the like, compared with the case where all of the active ingredients are used alone. Can be. That is, fenpropartin generally has a low inhibitory activity against mites when used at a concentration of 100 ppm or less, and acetate hardly exhibits acaricide activity at a commonly used concentration (250 to 500 ppm). However, when used in combination with each of these two components having concentration ranges that show little or no acaricide activity, the resulting mixture shows an unexpectedly high acaricide activity, which acts immediately on adult mites and larvae of the mite, Residual efficacy is also enhanced. This allows the two active ingredients, phenpropatrine and acetate, to work in concert with each other to enhance each potential acaricide. In addition, this combination does not impair the excellent pesticidal activity against other insects whose two components exhibit pesticidal activity.

Hereinafter, some embodiments will be described in more detail the present invention, of course, is not limited to these examples, such as the mixing ratio of the active ingredients, the type and amount of the auxiliary. All parts in these examples represent parts by weight.

Example 1

[Hydration powder]

A hydrated powder is obtained by uniformly mixing and crushing 20 parts of phenpropatrine, 20 parts of acetate, 5 parts of sodium alkylbenzenesulfonate, 2 parts of sodium lignosulfonate, 5 parts of white coal and 48 parts of clay.

Example 2

[Hydration powder]

Hydrated powder is obtained by uniformly mixing and pulverizing 10 parts of phenpropatrine, 30 parts of acetate, 5 parts of sodium laurylsulfate, 2 parts of sodium naphthalenesulfonate / formalin concentrate, 5 parts of white coal and 48 parts of clay.

Example 3

[Emulsification concentrate]

5 parts of phenpropartrin, 10 parts of acetate, 5 parts of polyoxyethylene nonylphenyl ether, 40 parts of acetonitrile and 40 parts of xylene are mixed to form a solution. As a result an emulsion concentrate is obtained.

Acaricide according to the present invention, by using a combination of phenpropartin and acetate, such as spotted mite, caramine spider mite, ganja and spider mite, mandarin mite, apple mite, broad mite and the like, fruit trees, vegetables, tea, flowers and For mites parasitic to trees, their individual components alone show excellent killing effects that are never observed.

First, the acaricide according to the present invention has a synergistic inhibitory effect on the mites parasitic on crops and horticultural crops such as spotted mites, tangerine mites, ganja and spider mites, and the like. In addition, such effects are exerted quickly and have a sustained effect even if a high synergistic killing effect occurs. As a result, even though it is not useful at all when only one of the active ingredients is used, by using the two active ingredients together it is possible to quickly and completely suppress the above-mentioned mite.

Secondly, the acaricide according to the present invention exhibits excellent acaricide efficacy even against mites that have become resistant by the use of many organic synthetic acaricides.

Third, the acaricide according to the present invention has a low application rate and shows excellent fertilizing effect, and thus does not affect fish and mammals, so there is no danger of causing environmental pollution.

Fourthly, the acaricide according to the present invention does not show phytotoxicity to crops and horticultural crops.

Fifth, the acaricide according to the present invention has lethal activity against both larvae and adults, and exhibits residual activity by spraying once as described above, so that it is not necessary to repeat the spray spraying with conventional acaricides.

Since the acaricide of the present invention has the above-mentioned characteristics, spotted mites, kaamine spider mites, ganja and spider mites, mandarin mites, apple mites, broad mites that damage the cultivation of fruit trees, tea, vegetables, flowers and trees, etc. And as an inhibitor of mites, and the like.

The efficacy and usefulness of the acaricide according to the present invention will be described with reference to the following test examples.

[Test Example 1]

[Inhibition test for spotted mites]

Inoculate 50 adult females of spotted mite that are resistant to organo-phosphate and decopulum and causing continuous generation alternation to 7- to 8-leaf cucumber crops cultivated in a glass greenhouse. Induces spawning Fully fed and scattered, after 3 days, the hydrated powder of the present invention prepared according to Example 1 was diluted to a predetermined concentration with water and sprayed in an amount corresponding to 100 l / 10 ar using a manual sprayer. Spray. Immediately before spraying and after 3, 7, 14 and 30 days of spraying, the number and phytotoxicity of parasitic female adults are investigated to calculate percent inhibition. The test is carried out in the form of 3 crops / compartment × 3 compartments for each sample solution. The results are as shown in Table 1 below.

In this test example, the inhibition rate (%) is calculated according to the following equation.

In the formula, Ca is the number of mites before spray spraying in the untreated (= untreated) compartment, Cb is the number of mites after spray spraying in the untreated compartment, and Ta is treated with the sample compound. The number of mites before spray spraying in the compartment, and Tb is the number of mites after spray spraying in the compartment treated with the sample solution.

TABLE 1

Note: Dicopol emulsified concentrates are acaricides described in the above-mentioned "Agural Chemicals Handbook 1985 edition".

[Test Example 2]

[Inhibitory effect test on tangerine mite]

After diluting the hydration powder of the present invention prepared according to Example 2 to an orange concentration at the initial stage of maturing stage of Okitsu, where a large number of mandarin mites were observed, the powder- Spray the sprayer in an amount corresponding to 300 l / 10 ar using a draw sprayer. Immediately before and after spraying spraying, 3, 7, 14, and 30 days after harvesting, 100 leaves per unit were randomly harvested and the number of adult females parasitic on them was investigated and the percentage inhibition was determined. Calculate

The test described above is carried out for each sample compound in the form of 1 tree / compartment x 5 compartments to calculate the average value of the inhibition rate 96. The results are as shown in Table 2 below.

TABLE 2

[Test Example 3]

[Inhibitory Effect Test on Ganza and Blemish Mites]

Inoculate 30 adult females of Gan and spider mites that are resistant to organotin-based compounds and dicopol to tea tissues cultivated in pots of 15 cm in diameter and that are resistant to organo-tin compounds and dicopol. Metastasis leads to spawning. Three days after metastasis and spawning, the hydrated powder of the present invention prepared according to Example 1 was diluted to a predetermined concentration with water, and the amount corresponding to 300 l / 10 ar using a powder-derived sprayer. Spray spray. Immediately before spraying and 3, 7, 14, and 30 days after spraying, the number of parasitic female adults and plant toxicity are investigated to calculate percent inhibition.

The above test is carried out in the form of 3 ports / compartment for each sample compound to calculate the average value of the percent inhibition. The results are as shown in Table 3 below.

TABLE 3

Note: The hydroxylated toric cyclohexyltin hydrate powder is the acaricide described in the aforementioned "Agural Chemicals Handbook 1985" edition.

Claims (6)

Characterized by containing α-cyano-3-phenoxy benzyl 2,2,3,3-tetramethylcyclopropanecarboxylate and O, S-dimethyl N-acetylphosphoroamidothioate as active ingredient Acaricide composition. According to claim 1, wherein in the case of the hydrated powder, emulsified concentrate, liquid formulation or sol formulation of the composition, the content of the above-mentioned active ingredient is 1 ~ 90% by weight of the agar composition. According to claim 1, wherein when the composition is a powder, DL powder or fine powder, the agar composition, characterized in that the content of the above-mentioned active ingredient is 0.5 to 5% by weight. The composition of claim 1, wherein the content of the above-mentioned active ingredient is 1 to 10% by weight when the composition is granule. The mixture ratio of α-cyano-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate and O, S-dimethyl N-acetylphosphoroamidothioate according to claim 1, wherein : 1 to 1: 100, the acaricide composition characterized in that. The mixing ratio of α-cyano-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate and O, S-dimethyl N-acetylphosphoroamidothioate according to claim 5, wherein : 1 to 1: 50, the acaricide composition characterized in that.