JPH0825842B2 - Little beetle attractant - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an attractant against adults of the Japanese beetle, more specifically, the present invention is excellent against adults of the Japanese beetle containing an aniline derivative and / or a benzoic acid ester derivative as an active ingredient. The present invention relates to an attractant that exhibits attractive properties.

[0002]

[Background Art] Japanese beetle (scientific name: Anomala ru
Focuprea) is an omnivorous agricultural pest that causes adult adults to damage above-ground parts such as soybeans, peanuts and grapes, and larvae to underground parts such as sweet potatoes, peanuts and tree seedlings. Adults of this pest are nocturnal, and because they fly and move over a considerable area, and larvae live in the ground, it is difficult to confirm any of them, and it is very difficult to control them with chemicals. It is in. That is, in the past, the control of the Japanese beetle, DEP at the time of transplantation or after survival for larvae, was performed.
Soil irrigation such as emulsion and carphos emulsion and soil admixtures such as DEP powder and diazinon granule are used.
It is extremely difficult to maintain the control effect over the entire cultivation period because these agents do not have a sufficient sustaining action, and since the agents penetrate deep into the soil, the amount of spraying is large, which results in an environmental impact. Problems are also likely to occur.

Therefore, control methods using attractants having a type different from that of conventional insecticides have been studied, and, for example, eugenol (Japanese Patent Laid-Open No. 61-60601) and so on have been used as attractants for Japanese beetle. , A sex pheromone, methyl 5-tetradecenoate (Japanese Patent Publication No. 3-25401)
No.) has been clarified, and traps using these as attractants have already been used for investigations of the development of the Japanese beetle. However, when eugenol is used, both males and females of the Japanese beetle can be captured, but the attractive effect is not as strong as the sex pheromone. In addition, when a sex pheromone is used as an attractant, it takes time for the pests to be exerted because the pests are controlled by capturing males and disturbing the mating behavior of males and females. It is a thing. From such a situation up to now, an attractant capable of efficiently capturing both males and females, which makes it possible to exterminate by capturing a large number of Japanese red beetles, has not been developed.

[0004] Under such a background, the present inventors have
As a result of diligently searching for a substance having a high attracting effect on both male and female of the Japanese chafer, we found a compound with a very high attracting effect that can be used for actual control. The present invention has been made based on such findings.

[0005]

DISCLOSURE OF THE INVENTION The present invention has the general formula (I) or (II)

Embedded image (In the formula, R ₁ represents a methyl group, an ethyl group, a hydroxyl group, a methoxy group, an ethoxy group, a carboxymethyl group, or a carboxyethyl group, and R ₂ represents a methyl group, an ethyl group, a propyl group, or an isopropyl group, R ₃ is a hydrogen atom,
A hydroxyl group, a methyl group, a methoxy group, or an ethoxy group is shown. 1) or 2 selected from the compounds represented by
It is intended to provide an attractant against adults of the Japanese beetle, which contains at least one compound as an active ingredient.

The present invention will be described in detail below. The aniline derivative represented by the general formula (I) and the benzoic acid ester derivative represented by the general formula (II) according to the present invention are known substances and are easily available as reagents, or It is a substance that can be inexpensively synthesized by a normal esterification reaction or the like.

In order to prepare the attractant according to the present invention, the compounding techniques generally used in the preparation of the attractant using the compounds represented by the above general formulas (I) and (II) are utilized. Can be done by For example, the compound represented by the general formula (I) is used as it is or after being made into a solution of an appropriate organic solvent such as ether or acetone, the solution is applied to an appropriate carrier, for example, a carrier such as various synthetic polymer or rubber. Use a material or device with an appropriate shape according to the usage mode, such as adsorption, impregnation of fibers such as cotton, non-woven fabric, paper or glass fiber, and encapsulation in a molded product of a suitable polymer material. It can be a formulation in a practical form. In the attractant according to the present invention,
Compounds represented by general formula (I) and general formula (II), preferably methyl anthranilate, methyl benzoate, methyl toluate, methyl 2-methoxybenzoate,
More preferably, the compound selected from methyl anthranilate and methyl toluate may be used alone or in any combination of two or more of these compounds. Further, it can be used in combination with methyl 5-tetradecenoate, which is a sex pheromone. The content of the active ingredient can be appropriately determined depending on the environment of use, but usually 0.1 g or more, preferably 0.1 g to 5 g of the active ingredient is added per formulation. Further, a suitable amount of an appropriate antioxidant such as butylhydroxytoluene, butylhydroxyanisole, α-tocopherol may be added to this attractant. Next, the present invention will be described more specifically with reference to examples.

[0008]

Example 1 A general formula (I) or a general formula (I) according to the present invention in which a glass wool is impregnated into an attractant container of a dry sliding-down trap (trade name Winspack, manufactured by Japan Tobacco Inc.).
1 g of the compound represented by I) was put and placed at 20 m intervals in a field where tobacco, flowers and vegetables are grown. In addition,
As controls, 5 of eugenol and sex pheromones
A (Z) -methyl tetradecenoate 5 mg preparation was also installed at the same time. The results of the number of trapped insects per trap per day are shown in Table 1 for each sex. From this result, the general formula (I) according to the present invention
And methyl benzoate, methyl toluate and methyl 2-methoxybenzoate in the general formula (II) can express a particularly high attracting action to both male and female Himekogane. Is recognized.

[0009]

[Table 1]

Example 2 A glass-wool impregnated with an attractant container of a dry slide-down trap (Windspack, trade name, manufactured by Japan Tobacco Inc.) was impregnated with 0.5 g of the following compound according to the present invention and then had a thickness of 0. The formulation enclosed in a 0.04 mm low-density polyethylene bag was put, and further, a 5 mg formulation of the sex pheromone was combined and set at 20 m intervals in a field where tobacco, flowers and vegetables are cultivated. As a control, eugenol was also placed in combination with the sex pheromone at the same time. The results of the number of traps per trap per day are shown in Table 2 for males and females.

[0011]

[Table 2]

Example 3 1 g of methyl anthranilate and butyl adsorbed on 10 g of vinyl acetate / polyethylene copolymer beads were placed in an attractant container of a dry slide-down trap (Winds Pack, manufactured by Japan Tobacco Inc.). Hydroxytoluene 5 mg
And 5 mg of the sex pheromone were combined and placed in the field where tobacco, flowers and vegetables are grown. Thirty-six beetle 38 individuals captured the next day were labeled with a paint marker and then released at a distance of 30 m. One week later, the individuals trapped in the trap were investigated. Table 3 shows the results.

[0013]

[Table 3]

As is clear from the results of the tests obtained in each of the above-mentioned examples, the attractant according to the present invention shows a high attracting action to the adults of the important agricultural insect pest beetle, Scutellaria baicalensis, female and male It was confirmed that both of them were captured very efficiently. As a result, conventionally, it was difficult to prevent damage to the Japanese beetle by using ordinary insecticides, but the attractant according to the present invention enables effective control of the Japanese beetle.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location A01N 37/44 (72) Inventor Satoshi Tsuchiya 6-2 Umegaoka, Midori-ku, Yokohama-shi, Kanagawa Prefecture Japan Tobacco Sangyo Co., Ltd. Plant Development Laboratory Yokohama Center (72) Inventor Doei Maekawa 6-2 Umegaoka, Midori-ku, Yokohama-shi, Kanagawa Japan Tobacco Inc. Plant Development Laboratory Yokohama Center

Claims (2)

[Claims] 1. A compound represented by the general formula (I) or (II): (In the formula, R ₁ represents a methyl group, an ethyl group, a hydroxyl group, a methoxy group, an ethoxy group, a carboxymethyl group, or a carboxyethyl group, and R ₂ represents a methyl group, an ethyl group, a propyl group, or an isopropyl group, R ₃ is a hydrogen atom,
A hydroxyl group, a methyl group, a methoxy group, or an ethoxy group is shown. 1) or 2 selected from the compounds represented by
An attractant for adults of Japanese beetle, which contains at least one compound as an active ingredient. 2. An adult of the Japanese beetle, which contains, as an active ingredient, one or more compounds selected from methyl anthranilate, methyl benzoate, methyl toluate, and methyl 2-methoxybenzoate. Attractant.