JP3115137B2 - Insecticidal efficacy enhancer and liquid insecticide preparation containing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Object of the invention]

[0002]

The present invention relates to an insecticidal efficacy enhancer and a liquid insecticide preparation containing the same.

[0003]

BACKGROUND OF THE INVENTION Several methods are known for enhancing the efficacy of agricultural and horticultural insecticides. For example, piperonyl butoxide is added (U.S. Pat. No. 2,550,737), and a large amount of a surfactant is added (Japanese Unexamined Patent Publication No. Sho 64).
No. 25706), a method of increasing the amount of sprayed medicine and the number of times of spraying are known. On the other hand, the compound of formula (1) described below used in the present invention is widely used in industrial fields such as printing inks, enamel solvents, cutting oils and coupling solvents, in addition to being used as a liquid carrier for agricultural chemical formulations. ing.

[0004] It is known that higher fatty acids, which are the other component of the present invention, are effective against scale insects in combination with higher fatty alcohols and mineral oils (Japanese Patent Application Laid-Open No. 49-1979). 25131).

However, it is not known that the combined use of the compound of the formula (1) and a higher fatty acid enhances the efficacy of the insecticidal active ingredient.

[0006]

As a method of enhancing the insecticidal active ingredient, for example, it is uneconomical to incorporate a large amount of a surfactant, and depending on the type of the surfactant, there is a possibility of causing a strong phytotoxicity to crops. There is. Moreover, the effect may vary depending on the combination of the insecticidal active ingredient and the surfactant. Also, piperonyl butoxide can be used only for certain pesticidally active ingredients. In addition, the method of increasing the amount of sprayed medicine or the number of times of spraying is not economical and may adversely affect the environment.

[0007] Therefore, there is a demand for an improved preparation which can sufficiently control pests by spraying a small amount of drug. An object of the present invention is to provide a new pesticide formulation meeting such a demand.

[0008]

Configuration of the Invention

[0009]

Means for Solving the Problems The present inventors have solved the above problems.
We studied diligently to solve. As a result, insecticidal activity
In addition, a compound represented by the following formula (1) which does not exhibit insecticidal activity itself
Compound and higher fatty acids, the insecticidal active ingredient
The potency was found to increase. That is, the first book
The gist of the invention is that the general formula (1)(Where R Represents a lower alkyl group, and n is an integer of 1 to 3.
Represents a number. ) And a higher fatty acid
And a pesticidal efficacy enhancer.

The gist of the second invention is that the insecticide is used.
The active ingredient has the general formula (1)(Where R Represents a lower alkyl group, and n is an integer of 1 to 3.
Represents a number. ) And a higher fatty acid
Liquid insecticide characterized by containing an insect efficacy enhancer
In the agent.

In the present invention, the compounding ratio of the compound of the formula (1) to the higher fatty acid is 1 to 0.05 to 10, preferably 1 to 0.1 to 5 parts by weight. 0.05 to 100, preferably 1 to 1 part by weight of the active ingredient
It is effective to mix in the range of -100.

The higher fatty acids usable herein include, for example, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid,
Saturated higher fatty acids such as isocetic acid, palmitic acid, heptadecylic acid, stearic acid, nonadecanoic acid, arachinic acid or behenic acid and undecylenic acid, oleic acid, elaidic acid, erucic acid, linoleic acid, linolenic acid or arachidonic acid And unsaturated higher fatty acids.

The compounds represented by the general formula (1) which can be used in the present invention include the following.

[0014]

[Table 1] General formula (1) Examples of the insecticidal active ingredient whose efficacy is enhanced by the addition of the insecticidal efficacy enhancer comprising the higher fatty acid of the present invention and a compound of the formula (1) include MEP, MPP, diazinon, isoxathion, pyridafenthion, chlorpyrifosmethyl,
ESP, marathon, PAP, dimethoate, hosalon,
PMP, DDVP, monocrotophos, CVMP, acephate, EPN, NAC, BPMC, bensultap,
Examples include, but are not limited to, permethrin, fenpropatrin, fenvalerate, etofenprox, pyrethrin, machine oil, diflubenzuron, buprofenzine, a 16-membered macrolide natural product or a derivative thereof.

The name of the insecticide is "Agricultural Chemical Handbook, 1992 Edition" (Japan Plant Protection Association)
(Issued July 30, 1992).

[0016]

EXAMPLES (Method of Formulation) The insecticidal efficacy enhancer of the present invention and the insecticidal preparation to which the insecticidal efficacy enhancer is added can be in the form of a liquid, emulsion, flowable, or aerosol.
Depending on the dosage form, various liquid carriers, surfactants, physical property improvers, stabilizers, deterrents, repellents, synergists, fragrances and the like can be added, and the mixture can be produced by a conventional method.

The insecticidal efficacy enhancer comprising the compound of the formula (1) and the higher fatty acid according to the present invention is preferably added at the time of formulating a pesticide, but may be used by adding to a diluent at the time of spraying.

In this case, the compounding ratio in the preparation may be 1% or more, but is preferably 5% or more. In addition, when used by adding to a diluent, a sufficient effect can be obtained if the concentration in the final (in the diluent) spray liquid is 50 ppm or more.

In addition, the insecticidal efficacy enhancer of the present invention can be added to the preparation by a method similar to the addition of an auxiliary in the preparation of an agricultural chemical.

The liquid carrier used for producing the liquid preparation of the present invention is not particularly limited. Examples thereof include alcohols such as methyl alcohol and ethyl alcohol, ketones such as acetone, methyl ethyl ketone and cyclohexanone, tetrahydrofuran and dioxane. , Ethers such as dimethyl ether, aliphatic hydrocarbons such as hexane, kerosene and normal paraffin, aromatic hydrocarbons such as benzene and toluene, halogenated hydrocarbons such as dichloromethane and dichloroethane, ethyl acetate and butyl acetate. Esters and the like can be mentioned. Further, only the compound of the formula (1) can be used as a liquid carrier.

In the present invention, various surfactants are used when producing emulsions and flowables. Such surfactants include, as anionic surfactants, for example, alkyl benzene sulfonate, alkyl naphthalene sulfonic acid, dialkyl sulfosuccinic acid, sulfate or phosphate of polyoxyethylene alkyl phenyl ether, polyoxyethylene styrene Phenyl ether sulfate,
There are naphthalene sulfonate formaldehyde condensate and the like, and nonionic surfactants include, for example, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl allyl ether, polyoxyethylene styrenated phenyl ether, polyoxyethylene alkyl ester, and polyoxyethylene alkyl ester. Examples include, but are not limited to, oxyethylene sorbitan alkylates, polyoxyalkylene glycols, and polyoxyethylene phenyl ether polymers.

The insecticidal efficacy enhancer of the present invention can be a mixture of a plurality of insecticides or a mixture of an insecticide and a fungicide.

The preparation method of the preparation is not particularly limited, and it can usually be easily prepared using a preparation method and apparatus.

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.

All parts in the examples are parts by weight.

[0026]

Example 1 (Emulsion) 50 parts of BPMC, 5 parts of polyoxyethylene nonylphenyl ether, 5 parts of calcium dodecylbenzenesulfonate, 12.5 parts of oleic acid, 12.5 parts of propylene glycol monoethyl ether, xylene 15 The parts are mixed to obtain an emulsion.

Example 2 (Floable) In 44 parts of water, 3 parts of polyoxyalkylene allyl phenyl ether, 3 parts of ethylene glycol, and caprylic acid
5 parts, dipropylene glycol monoethyl ether 5
Were mixed, and 40 parts of NAC was added. p. m.
For 20 minutes to obtain a flowable agent.

Example 3 (Aerosol) 0.3 parts of permethrin, 2.5 parts of capric acid and 2.5 parts of propylene glycol monomethyl ether are dissolved in 94.7 parts of isoparaffin. A container is filled with 70 parts of this solution and 30 parts of liquefied petroleum gas to obtain an aerosol.

[0029]

The action of the insecticidal efficacy enhancer of the present invention has not been elucidated, but by blending the higher fatty acid and the compound of formula (1) with the insecticidal active ingredient, the insecticidal active ingredient is absorbed and penetrated into the eggshell and the insect body surface. It is considered that the insecticidal active ingredient is easily absorbed into the plant body.

Next, test examples will be given to prove the usefulness of the present invention.

Test Example 1 Test for insecticidal effect of Japanese cabbage on Japanese cabbage 6-7 grown in a plastic pot having a diameter of 12 cm
A leafy cabbage (variety: middle early) is placed on a turntable, and a predetermined concentration diluted solution of the emulsion prepared according to Example 1 is sprayed at a rate of 150 liters per 10 ares using a spray gun. Then, after air-drying, the pot was placed in a greenhouse, and on the day of spraying, 3 days and 7 days later, the treated leaves were cut off with a leaf punch having a diameter of 8 cm, and a diameter of 9 cm.
cm plastic dish. In this, ten third instar larvae of the Japanese moth are put and put at 25 ° C. Three days after release, the number of dead larvae was examined, and the mortality (%) was determined.

This test was performed in triplicate, and the average mortality was calculated. The results are shown in Tables 2 and 3.

[0033]

[Table 2]

[0034]

[Table 3] Test Example 2 Test of insecticidal effect of cucumber on cotton aphid Two-leaf stage cucumber (cultivar: Sagami Hanshiro) cultivated in a plastic pot having a diameter of 9 cm was placed on a turntable, and the emulsion prepared according to Example 1 was used. A predetermined concentration diluent is sprayed by a spray gun at a rate of 100 ml per 10 ares. After air-drying, the pot was placed in a glass greenhouse, and 1 day and 7 days after spraying, 10 cotton aphid adult wingless adults were inoculated into the treated leaves with a fine brush. Two days after the inoculation, the number of adult mortality was examined.

This test was carried out in triplicate, and the average mortality (%) was calculated. The results are shown in Tables 4 and 5.

[0036]

[Table 4]

[0037]

[Table 5]

[0038]

When the insecticidal efficacy enhancer of the present invention and a liquid insecticide preparation containing the same are implemented, the following effects are obtained. That is, first, since the potency enhancer of the present invention is known as a compound and is commercially available, it is easily available and highly safe.

Second, physicality does not matter,
Easy to handle.

Third, the insecticidal efficacy enhancer of the present invention can be used when added to any kind of insecticide containing an insecticidally active ingredient, and is versatile.

Fourth, when a liquid insecticide preparation containing the insecticidal efficacy enhancer is actually sprayed on a field, the inherent physiological activity of these pesticides is enhanced, and the insecticidal effect is enhanced.

Fifth, these liquid insecticide preparations are more harmful to crops and the like and toxicity to humans, livestock, and the like than conventional pesticides that do not contain the insecticidal efficacy enhancer of the present invention. Absent.

Sixth, when the liquid insecticide preparation of the present invention is formulated, no special equipment is required and no special production process is required, and the composition can be easily and effectively applied to mass production.

────────────────────────────────────────────────── ─── Continuation of the front page Examiner Shohide Hoshino (56) References JP-A-2-142704 (JP, A) JP-A-60-149510 (JP, A) JP-A-49-25131 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01N 31/02

Claims (2)

(57) [Claims] (1) General formula(Where R Represents a lower alkyl group, and n is an integer of 1 to 3.
Represents a number. ) And a higher fatty acid
And an insecticidal efficacy enhancer. 2. An insecticidal active ingredient having a general formula(Where R Represents a lower alkyl group, and n is an integer of 1 to 3.
Represents a number. ) And a higher fatty acid
Liquid insecticide characterized by containing an insect efficacy enhancer
Agent.