JPH0751484B2 - Sugino Akane tiger beetle attractant - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an attractant to Scutellaria cinerea, which is a perforating pest of cedar and cypress.

[Conventional technology and its problems] Japanese cedar and cypress are important trees used as building materials in Japan, and high quality is demanded.

However, in recent years, the deterioration of the material due to the damage of Sugino Akanetoramitoki has become a serious problem. The damage of Sugino Akane Torakamikiri is generally called [Tobixare] and causes discoloration and decay in the trunks of Japanese cedar and cypress.
For this reason, the timber value of the wood lumbered from the trees damaged by Sugino Akanetra kamikiri significantly decreases.

The harming process of Sugi no Akane tiger beetle against Japanese cedar and cypress is as follows.

First, an adult female Sugino Akanetra kamikiri lays eggs on dead branches of Japanese cedar and cypress. The hatched larvae eat inside the dead branches and eventually dive into the trunk material, and they feed on the upper and lower foramen while blocking wood chips. Discoloration and rot spread from this larval path to the surrounding area.

The control method for Scutellaria captrica is an effective means for pruning because the female adults of Scutellaria speciosa lay eggs only on dead branches, but it requires considerable labor, cost and technique. It is only used in some areas. Moreover, although various chemical control methods have been studied, they have not been put to practical use yet. Under such circumstances, an effective and simple control method, particularly a method of killing with an attractant is desired.

According to Makihara, who is one of the present inventors, several attractants have been found that utilize the flower visiting habits of Sugino Anetora camikiri, and among them, benzyl acetate is mentioned as one of the excellent substances. There is. (Forestry Science and Technology Agency, published on April 20, 1987, "Damage and control of Sugino Akanetra kamikiri", p. 60).

However, there are variations in the effect of each attractant due to factors such as the use environment, weather conditions, and other factors that are not yet clarified. One way to reduce this variation is to enrich the types of attractants. Naturally, there is also a demand for an attractant having a remarkably stronger attracting force than benzyl acetate.

[Problems to be Solved by the Invention] In order to improve such problems, the present inventors have conducted a study on an attractant for Scutellaria scutellariae. That is, paying attention to the fact that adults of Sugino Akanetula camikiri have a flower visiting habit, and as a result of studying whether there is an attractant for Suginoacanthera chamomiki in flower odor components and derivatives of benzyl acetate, methylphenylacetate, methylphenoxyacetate. , Ethyl benzoate and anisyl acetate were found to have excellent attractive effects.

As is clear from the above description, an object of the present invention is to provide an attractant necessary for controlling the attraction of S. Another object of the present invention is to provide a method for attracting Scutellaria camifolia beetle using the attractant.

[Means for Solving Problems] The present invention has the following configurations.

(1) An agent for attracting Scutellaria campanula, which has at least one selected from methylphenylacetate, methylphenoxyacetate, ethylbenzoate and anisylacetate as an active ingredient.

(2) The attractant according to item (1), which is a combination of benzyl acetate.

(3) A method of attracting Scutellaria camifolia, which comprises using, as an attractant, one or more selected from methylphenylacetate, methylphenoxyacetate, ethylbenzoate and anisylacetate.

The structure and effect of the present invention will be described in detail below.

The attractant of the present invention may be used alone, or two or more kinds may be mixed. The attractant of the present invention may be used as it is, or may be used by adsorbing it on a suitable solid medium such as roll cotton, cotton rope, absorbent cotton and the like. Further, a solid substance may be prepared by mixing with a higher fatty acid ester type, a higher alcohol type, a starch type polymer compound, a vegetable oil or the like.

Further, as a known attractant before the present invention, there is benzyl acetate as described above. The attractant of the present invention can be used alone or in combination of two or more kinds with benzyl acetate.

In addition, Citronellal, neryl acetate, linalyl acetate, linalool or phenylethylpropionate are known as chemical substances having some attraction to Sugino red field beetle (see Comparative Example described below). Although it exhibits good properties, it is inferior to the attractant of the present invention. However, these attractants can also be used in combination with the attractants of the invention.

As the method of using the attractant of the present invention, there is a design registration No. 698, 21.
A combination of a plurality of vertical plates as shown in No. 6, a collision plate type trap that captures the flying Sugino Akanetra chamomiki flying against the plate by providing an attractant holding part in the center thereof,
Alternatively, there is an adhesive trap in which an attractant is provided on a plate coated with an adhesive so as to catch the flying scutellaria angustifolia.

In addition, if an insecticide effective against Sugino Akanetora kamikiri is put to practical use, a method of spraying an attractant and an attractant together with an attractant and an insecticide in the forest of Japanese cedar and cypress, or a method of spraying the insecticide around the attractant Is expected to be fully possible.

As will be apparent from the examples described below, the trap equipped with the attractant of the present invention can be installed in a cedar or cypress forest in which the Scutellaria campanulae is distributed, and its forest edge, and other tree species close to the forest edge. . Due to the habit of adults of Sugino Akanetora, the average temperature of the adults from the end of April to the end of August is 18 depending on the region.
Highly effective in sunny or cloudy weather above ℃. The trap is installed for about 1 to 4 months, preferably 2 to 3 months within the above-mentioned period so that the trap can be left standing and fixed so as to withstand wind and rain during that period. The trapped adult worm loses its freedom and dies, but it does not disappear due to decay or the like during the test period, and thus may be left for a test period of about 2 to 3 months.

Next, examples of the present invention will be described.

Example (1), Comparative Example (1), Control Example 1, Reference Example 1 About 10 g each of the attractant of the present invention is impregnated into absorbent cotton contained in a cup having a diameter of 6 cm, and attached to the center of the collision plate type trap. Five traps were set up for each attractant in a cedar forest, and the number of attracted Suginoa nematode was investigated. The results are shown in Table 1. From the comparison with the control example, all the arguments
14 or less was used as a comparative example.

The test will be held in Odawara City, Kanagawa Prefecture from May 6, 1988.
I did it on July 15th.

Example (2), Comparative Example (2) About 10 g each of the attractant of the present invention was impregnated with absorbent cotton contained in a cup having a diameter of 6 cm, and attached to the center of the collision plate type trap. Five traps were set up for each attractant in a cedar forest, and the number of attracted Suginoa nematode was investigated. The results are shown in Table 2. From the comparison with the control example, all the arguments
The following 11 were set as comparative examples.

The test was conducted in Takizawa Village, Iwate Prefecture in 1989.

Example (3), Comparative Example (3), Control Example 3, Reference Example 3, 4 About 10 g each of the attractant of the present invention was impregnated with absorbent cotton contained in a cup having a diameter of 6 cm, and attached to the center of the collision plate type trap. Regarding benzyl acetate, after mixing with vegetable oils and fats, a solid substance is prepared and similarly attached to the center of the trap. Five traps were set up for each attractant in a cedar forest, and the number of attracted Suginoa nematode was investigated. The results are shown in Table 3. From the comparison with Comparative Example 3, all the arguments less than 11 were set as Comparative Examples.

This test was conducted in 1989 in Odawara City, Kanagawa Prefecture.

[Effects of the Invention] As is clear from the above description, the attractant of the present invention shows a remarkable attracting force when attached to the collision plate type trap as compared with the control example or other general fragrances.

In addition, it has an attractive force equal to or higher than that of a known attractant (benzyl acetate), and it is clear that it can be put to practical use.

Front page continuation (72) Inventor Hiroyuki Oda 810-30-4, Uenodai, Fukaya City, Saitama Prefecture (72) Inventor, Michitaka Nakanishi 2969-2, Uenodai, Fukaya City, Saitama Prefecture Toru Matsumura, Fukaya City, Saitama Prefecture Uenodai 72 (56) Reference JP-A-57-72901 (JP, A) JP-B 38-4896 (JP, B1)

Claims (3)

[Claims] 1. An attractant for Scutellaria camphorata L. persicae which contains one or more selected from methylphenylacetate, methylphenoxyacetate, ethylbenzoate and anisylacetate as an active ingredient. 2. The attractant according to claim 1, comprising a combination of benzyl acetate. 3. A method of attracting Scutellaria camphorata L., which uses one or more selected from methylphenylacetate, methylphenoxyacetate, ethylbenzoate and anisylacetate as an attractant.