JPS6160601A - Beetle (anomala rufocuprea) attractant - Google Patents

Abstract

PURPOSE:An attractant to an adult beetle (HIMEKOGENE) (Anomala refocuprea) that contains, as an active ingredient, 4-allyl-2-metoxyphenol, thus showing high selectivity of attractive action on adult HIMEKOGANE. CONSTITUTION:Eugenol obtained from essential oil, namely 4-allyl-2-metho xyphenol, is used as an acative ingredient to give an attractant for adult HIMEKOGANE. The attractant is applied together with attracting tools on appropriate sites around field to be damaged by the beetles to attract and let them fall down into water or make them immobile to kill.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an agriculturally important pest that damages the underground parts of plants such as potato and groundnut, which is an excellent attractant to adults of the Japanese chafer. Control is difficult because the larvae live underground. Conventionally, the method of controlling this disease has been to mix granules or powders of insecticides such as diazinon or MPP with the soil before planting the crops. The effect of repelling existing larvae and newly invading larvae within one month after chemical treatment is observed, but after that, the effective ingredients disappear due to decomposition, etc., and the most important problem is the enlargement of crops. It cannot be expected to be effective against larvae that invade and cause damage during the growing season.

For control during this period, use diazinon and MPP agents.

The most effective method is to spray granular insecticides such as DBP agents on the ridges, but this will control the adult insects that come to lay eggs or the larvae that have just hatched, and as a result, the larvae that will cause damage to the underground area. It is an object.

However, the generation period of the adult scuttle beetles is long and they do not always appear within a fixed period of time, and if the above-mentioned insecticides are left untreated, the active ingredients of the insecticides will easily decompose and the insecticidal effect will be significantly reduced. Therefore, in order to increase the insect control effect, the number of times the insecticide is sprayed must be increased.
In addition, because it is difficult to predict the occurrence of pests, it is not possible to know when to effectively control them, and even though it requires significant economic cost, it has not been possible to demonstrate excellent effects.

Furthermore, continuous use of insecticides has increased the resistance of the grasshopper to the insecticides, weakening the insecticidal effect and causing social problems such as environmental pollution.

The present invention is the result of extensive research aimed at improving these drawbacks, and as a result, we have discovered an excellent attractant for attracting the adults of the Japanese lesser beetle, and are aiming to exterminate the lesser common beetle. In other words, as a result of examining various compounds to search for substances that have the effect of attracting adults of the Japanese white beetle, we found that 4-allyl-
It was discovered that 2-methoxyphenol (hereinafter referred to as eugenol) is effective. Moreover, this eugenol is selectively effective against adult beetles of the beetles, and does not act equally against beetles belonging to the so-called Scarabidae family; for example, it is not very effective against adult beetles of the beetles.

On the other hand, geraniol, which is widely contained in essential oils like eugenol, is effective against adults of the Scarab beetles, but not so effective against adults of the Scarab beetles.These findings are shown below.

(Test method) The attraction effects of eugenol and geraniol were examined as single agents and as a mixture. Roll tip (φ10×301+1
1 ml of the drug was adsorbed onto I11), and an attractor was placed in the center of a combination of multiple vertical plates.

It was installed at a height of 1 to 1.5 m above the ground on trees such as pine and dogwood. In the test, one attractor was installed on each of five trees, and the number of attracted insects was investigated for 30 days. The attractors were collected at approximately 10-day intervals. The results are shown in Table 1.

Table 1 The present invention has been completed based on such knowledge. The present invention provides an attractant for the adult scuttle beetle containing eugenol as an active ingredient.

According to the present invention, it has become possible to accurately predict the occurrence of Japanese scuttle beetle, which has been difficult in the past, and it has also become possible to determine when insecticides are effective for controlling insects.

According to the present invention, by placing the above-mentioned attractant together with an appropriate attractor at a desired position around a field that is attacked by the Japanese white beetle, the aroma thereof can be used to attract the adult Japanese white beetle and cause them to fall into water or the like. Or it kills insects by immobilizing them.

The attractant of the present invention may be used as it is, but it may be mixed with a suitable liquid medium such as alcohols such as methyl alcohol 5 and ethyl alcohol; gasoline kerosene; aliphatic hydrocarbons such as hexane; benzene, toluene, xylene, etc. may be dissolved or dispersed in a solvent such as aromatic hydrocarbons, etc., or in a suitable solid medium, such as fibreboard,
Vegetable oil adsorbents such as roll cotton, cotton rope, and absorbent cotton; mineral adsorbents such as zeolite and bentonite may be adsorbed, and if necessary, emulsifiers such as soaps, higher alcohols, and sulfuric esters.

Alkyl sulfonates, stabilizers, etc. may be added.

The attractant of the present invention can be used, for example, by combining a plurality of vertical plates, placing the attractant in the center of the plate, and using a collision plate type trap that traps the flying flycatcher adults by colliding with the cough plate, and applying an adhesive. There is a sticky board type trap that traps the flying white beetle adults by providing an attractant at a desired location on the board.

Next, examples of the present invention will be described.

Example 1 Absorbent cotton impregnated with 5 g of the attractant of the present invention was attached to the center of a collision plate type trap, and the traps were installed in a sweet potato field at intervals of about 50 m or more between each trap.

In addition, in order to eliminate the difference in abundance depending on the trap position, the trap position was changed every 5 days and the number of attracted insects was investigated for one month. The results are shown in Table 2.

Table 2 Example 2 A fiber board impregnated with 20 g of the attractant of the present invention was attached to the center of the sticky board type trap, and the traps were installed in a sweet potato field at intervals of about 50 m or more between each trap. In order to eliminate significant differences due to trap positions, the trap positions were changed for each survey and the number of attracted insects was surveyed every 4 days for 2 months. The results are shown in Table 3.

As is clear from Tables 2 and 3, the attractant of the present invention exhibits a strong attracting power to adults of the Japanese white beetle, and Table 3 also shows that the use of the attractant of the present invention improves the development and decline of adult white beetles. It is clear that it is possible to understand the

Example 3 20ff of the attractant of the present invention was placed in the center of a collision plate type trap.
Impregnated fiberboard was attached and the traps were placed in a grid pattern in a sweet potato field with an interval of about 30 m between each trap. For comparison, we used guiazinon granules (Sankei Chemical Co., Ltd.), which is a commercially available insecticidal beetle control agent.
"Diazinon" (containing 5%) was used.

The attractant of the present invention was left undisturbed for about two months from late June to August, the first time the red beetle appeared, and the insecticide of the comparative example was sprayed six times at intervals of 7 to 10 days and harvested. We investigated the damage rate of sweet potatoes at the time. The result is the fourth
As shown in the table.

Table 4 As is clear from Table 4, the attractant of the present invention has a superior pesticidal effect compared to conventional insecticides.

Claims (1)

[Claims] Adult flycatcher attractant containing 4-allyl-2-methoxyphenol as an active ingredient