JP2002322004A - Expellent for wasp and method for exterminating wasp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an expellent for wasps excellent in rapid effect, and to provide an effective exterminating method capable of instantaneously making flying behavior of aggressive wasps quiet and stopping the behavior and further killing alive wasps. SOLUTION: The expellent for wasps comprises at least one kind of a volatile liquid ingredient selected from the group consisting of iso-pentane, n-pentane and cyclopentane. The method for exterminating wasps is characterized by applying the expellent to a nest of wasps and transpiring the volatile liquid ingredient in the nest and stopping behavior of wasps in the nest.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hornet control agent and a hornet control method using the same. More specifically, a pesticide is applied to the hornet's nest,
The present invention relates to a method for stopping wasp behavior.

[0002]

2. Description of the Related Art Conventionally, a bee aerosol using a pyrethroid-based insecticide or an organic phosphorus-based insecticide has been used for controlling wasps.

[0003] However, in the extermination of aerosol using the above-mentioned insecticide, it takes time to kill. Also, these insecticides act on the hornet's nerves, causing them to be temporarily agitated, making them very aggressive and very likely to get stung. Therefore, when exterminating,
It is necessary to wear protective clothing and work.

[0004] In recent years, hills and low mountains where habitats of large hornets are inhabited have been converted into residential lands, and the opportunities for hornets to come into contact with humans have increased, and hornet sting accidents in and around cities have increased. I have. Since the hornet's toxicity is very strong, and if it becomes allergic to bee venom, it may cause shock death, etc.Therefore, in the control of hornets, a proposal has been made for a pesticide with excellent immediate action and an effective and effective control method. It is urgent.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and has been achieved by applying a pesticidal agent of wasp excellent in rapid action and a wasp nest by applying the pesticide to a wasp nest. It is an object of the present invention to provide an effective extermination method for calming and stopping the flying behavior of a wasp, which is very aggressive, and further, killing a living hornet.

[0006]

That is, the present invention provides:
(1) a waspicidal agent comprising at least one volatile liquid component selected from the group consisting of iso-pentane, n-pentane and cyclopentane; (2)
The disinfectant according to the above (1), which further comprises an insecticidal component, and (3) the insecticide component is a group consisting of dd-T80-praletrin, pyrethrin, allethrin, tetramethrin, resmethrin, phenothrin, tralomethrin, and etofenprox. (4) the pesticide according to any one of (1) to (3), wherein the pesticide is at least one selected from the group consisting of: (4) A method for controlling a hornet, comprising applying the control agent according to any one of (4) to a hornet's nest, and evaporating the volatile liquid component in the nest to stop the action of the hornet.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
It comprises at least one volatile liquid component selected from the group consisting of iso-pentane, n-pentane and cyclopentane. The volatile liquid component, compared with insects such as large beetles and stink bugs, is not known for some reasons, but particularly exhibits a hornet's remarkable anesthetic action and a cooling action to stop the movement of muscles. Rolling can be promoted. Further, the volatile liquid component can be gasified and filled into the nest at the same time as it is applied into the hornet's nest. The volatile liquid component is particularly preferably iso-pentane from the viewpoint of acting particularly efficiently on the hornet and obtaining high rapidity.

[0008] The pesticidal composition of the present invention may contain an insecticidal component in addition to the volatile liquid component, thereby suppressing the resuscitation of the hornet and causing death with time. Furthermore, the time until the hornet's action is stopped can be shortened, and quicker action can be promoted.

The insecticidal component used in the present invention includes d.d.
T80-Praletrin, pyrethrin, arethrin, tetramethrin, resmethrin, phenothrin, tralomethrin, etofenprox, framethrin, permethrin, cyphenothrin, cypermethrin, empentrin, etc. , Diazinon, malathion, prothiophos, propetanphos, chlorpyrifos, chlorpyrifosmethyl, DDVP and other organophosphorus insecticides, NAC,
Carbamate insecticides such as penthiocarb and propoxur; and methoxadiazone. Among the insecticidal components, from the viewpoint of exhibiting a high lethal effect and a fast-acting effect, and also being advantageous in terms of safety, dd-T80-
Praletrin, pyrethrin, allethrin, tetramethrin, resmethrin, phenothrin, tralomethrin, etofenprox are preferred, and among them, d · d-T8
0-Praletrin is more preferred. These can be used alone or as a mixture.

[0010] iso-pentane, n in the above pesticide
The concentration of at least one volatile liquid component selected from the group consisting of pentane and cyclopentane increases the efficacy and dispersibility, and from the viewpoint of sufficiently reaching the target location and securing the flight distance surface, -100% by weight is preferred, and 50-99% by weight is more preferred.

[0011] The concentration of the insecticidal component in the pesticide does not depend on the type of hornet and the spraying environment, so that the hornet that has fallen and turned upside down is revived during the work of disposing of the nest after the spraying treatment, and does not run out. In addition, from the viewpoints of the safety of the processor, economy, etc., 0.01 to 3% by weight is preferable, and 0.03 to 1% by weight is more preferable.

As an application form of the pesticide of the present invention, there is a form in which a liquid of the pesticide is sprayed into a hornet's nest or the like by using an existing means such as a sprayer, a spray or an aerosol. Among these measures, an aerosol that is easy to use because the wasp is a very dangerous pest, without the hassle of preparing nebulizers or containing pesticides,
In addition, it is preferable because it is small in size and is easy to handle, and operation is easy by just pressing. Aerosols are also optimal because they handle pesticides that are volatile liquids at room temperature.

The aerosol used in the present invention is mainly composed of a stock solution containing a volatile liquid component, an insecticidal component and the like and a propellant, and may contain an efficacy enhancer, a surfactant and the like as required. May be. For the preparation of the contents, use the volatile liquid component alone or determine the combination of the volatile liquid component and the insecticidal component, and also the insecticidal component concentration, the ratio between the stock solution and the propellant, the type of wasp, It can be set according to the purpose of use such as the processing location.

It is preferable that the aerosol is of a large spray type capable of spraying a large amount in a short time and a long distance in a short time. The spray amount of the aerosol contents, the wasp is a dangerous pest, so the contents reach the target location instantly,
And from the viewpoint of wasp exposure of the contents to the hornet, 2 ml
/ Sec or more is preferred. Also, regarding the upper limit of the spray amount,
There is no particular limitation provided that the danger due to high injection is sufficiently considered.

The average spray particle diameter of the pesticide in the aerosol can be improved by intensively pouring the undiluted solution to the target area to enhance the efficacy and the rapid effect, and can sufficiently reach even a distant or slight wind. Therefore, it is preferably at least 30 μm, more preferably at least 40 μm. In the present specification, the “average spray particle size” refers to a 50% particle size in a volume integrated distribution in a space of particles immediately after being sprayed into the space, and is, for example, manufactured by Tonichi Computer Co., Ltd. It can be measured by LDSA-1400A. The pesticide can also be applied to the target site in a liquid state in some cases, for example, it can be injected into a nest.

Further, the volume ratio between the stock solution and the propellant in the aerosol (stock solution / propellant) is preferably 50/50 to 95/5 from the viewpoint of high adhesion to hornets and coarsening of spray particles. More preferably 60 / 40-
It is adjusted to be 90/10.

The hornet to which the present invention is directed is:
Paper wasps and wasps such as phloem wasps, wasp wasps, wasps, wasps, wasps, and wasps,
Wasp superfamily wasps such as wasps, wasps, hornets, giant hornets, and wasps.

The pesticide of the present invention can be applied to a hornet in a nest, or a hornet that has stopped in a nest or elsewhere, and a flying hornet. In particular, the pesticide of the present invention has a remarkable effect on the control of wasps in the nest,
It is also effective because it can eradicate wasp sources.

The method for controlling wasps of the present invention is characterized in that the pesticide of the present invention is applied to a hornet's nest, and the volatile liquid component evaporates in the nest to stop the action of the wasp inside. . When the pesticide of the present invention is applied to the nest, the gas of the volatile liquid component instantaneously fills the nest, so that the aggressive flying action of the hornet inside can be immediately stopped. Further, when a pesticide containing an insecticidal component is further applied to a hornet's nest, the action of the hornet in the nest is stopped, and then the hornet can be efficiently killed as it is.

Therefore, by applying the pesticide of the present invention to a hornet's nest by spraying or the like, the hornet in the nest can be almost completely eliminated. Since the effect of the pesticide of the present invention is fast-acting, the hornet immediately drops and turns,
Because it stops flying and other actions, it can be exterminated without a stab accident caused by a hornet.

[0021]

Next, the present invention will be described in more detail with reference to Test Examples and Examples, but the present invention is not limited only to such Test Examples and Examples.

Test Example 1 [Evaluation of Rapid Efficacy of Volatile Liquid Component] As a test insect, an adult wasp was used. Five test insects were released into a test apparatus having a cylindrical glass container (height 40 cm, diameter 20 cm). 3 g of a volatile liquid component was sprayed as a pesticide from the upper opening and closing port of the glass container using a sprayer. After spraying, the test insect falls and turns (KT50)
I checked the time to do it. Table 1 shows the results. In Comparative Example 6, a commercial aerosol for bees was used as a pesticide.

[0023]

[Table 1]

From the results shown in Table 1, it was found that wasp was faster when iso-pentane, n-pentane and cyclopentane were used as the pesticides of the examples than when the components of the comparative example were used. It shows a fall-upturn, indicating that the quick-acting effect is high.

Test Example 2 [Evaluation of immediate effect and lethality of a mixture of a volatile liquid component and an insecticidal component] The test insects and the test apparatus were the same as those in Test Example 1, except for the adult wasps adult and the cylindrical glass container (height: (40 cm, diameter 20 cm). As the pesticides, volatile liquid components and insecticidal components shown in Tables 2 and 3 were used. When a pesticidal component is contained, a stock solution obtained by dissolving 1.0 g of the pesticidal component in 270 ml of a volatile liquid component;
An aerosol was prepared by filling a pressure-resistant container with 180 ml of the propellant. When no insecticidal component was contained, an aerosol was prepared by filling a stock solution consisting of 270 ml of a volatile liquid component and 180 ml of a propellant into a pressure-resistant container. Five Japanese hornets were released into a glass container, and 5 g of the content was sprayed from an opening / closing opening on the upper portion of the glass container using the prepared aerosol. After spraying, the time for the test insects to fall and turn (KT50) and the mortality after 24 hours were examined. The results are shown in Tables 2 and 3. In Comparative Example 26, a commercially available aerosol for bees was used as a pesticide.

[0026]

[Table 2]

[0027]

[Table 3]

From the results shown in Tables 2 and 3, the wasp control agents containing iso-pentane, n-pentane or cyclopentane as a volatile liquid component obtained in Examples 4 to 27 are comparative All of the test insects fall and turn over time shorter than the pesticides obtained in Examples 7 to 26,
It can be seen that the rapid effect is high. Further, as shown in the examples, even when the volatile liquid component further contains an insecticide component, it is possible to obtain a drop elevation time almost equivalent to that when the volatile liquid component is used alone, which is high. It turns out that it shows a quick effect. When the volatile liquid component was used alone, the Japanese hornet did not die,
By containing the insecticidal component, a high lethal effect could be obtained. In particular, dd-T80-praletrin, d-T80-
By including resmethrin, phenothrin and permethrin, 100% mortality could be obtained after 24 hours.

Test Example 3 [Effect of Average Spray Particle Size in Aerosol] As the test insect and the test apparatus, similarly to Test Example 1, adults of the Japanese hornet and a cylindrical glass container (height 40 cm, diameter 20 cm) were used. . As the stock solution of the pesticide, the volatile liquid components and the insecticidal components shown in Table 4 were used. When the insecticidal component was contained, 1.0 g of the insecticidal component was used. As the pesticide, the stock solution and the propellant in the amounts shown in Table 4 were filled in a pressure-resistant container to prepare an aerosol in which the average spray particle diameter was changed and an aerosol in which the ratio of the stock solution to the propellant was changed. . 5 hornets were released into a glass container, and the content was 5 g with the prepared aerosol.
Was sprayed from the opening / closing port on the upper part of the glass container. After spraying, the time during which the test insects fall and turn (KT50) and the rate of fall and turn after 1 hour were examined. Table 4 shows the results.

[0030]

[Table 4]

Based on the results shown in Table 4, Examples 28 to 3
By comparing 0 with Examples 32 to 34, when the ratio of the stock solution and the propellant is the same and the same spray particles having the same average spray particle diameter are used, the iso-pentane is further added with d.d- It can be seen that by including T80-praletrin, the fall-up time is shortened, and the fall-up rate after one hour can be made 100%. By comparing Examples 35 to 37 in which the average spray particle diameter is the same, the ratio of the stock solution to the propellant shows that the larger the mixture ratio of the stock solution, the faster the falling time of the test insect falls. Understand. By comparing Examples 38 to 40 in which the ratio of the stock solution and the propellant is the same, the size of the average spray particle diameter of the pesticide shows a tendency that the falling elevation time becomes slower as the particle diameter becomes finer. On the contrary, it can be seen that the quick effect is accelerated as the average spray particle diameter increases. In addition, as shown in Example 31, the use of a pesticide having a large blending ratio of the stock solution in a liquid form shows that a high immediate effect can be obtained.

Test Example 4 [Evaluation of extermination of hornet by pesticide] Using volatile liquid components and insecticidal components shown in Table 5,
An aerosol was prepared in the same manner as described in Test Example 2. The spray amount of the obtained aerosol was 2 ml / sec, and the average spray particle size was 40 μm. Then, a protective suit was worn to prepare for the eradication posture, and an aerosol was sprayed toward the hornet's nest for 20 seconds. After the spraying, the time until the sound of the nest in the nest became inaudible was measured, and the behavior of the hornet was observed for 1 hour. Table 5 shows the results. In Comparative Example 28, a commercial aerosol for bees was used as a pesticide.

[0033]

[Table 5]

From the results shown in Table 5, when the pesticide obtained in the example was used, after spraying, the hornets in the nest did not fly out and became calm in a short time, and almost all hornets were killed. Confirmed that it is in the state. In contrast, when the pesticide obtained in Comparative Example was used,
It took time for the humming to stop, and many hornets in the nest jumped out of the exit.

Test Example 5 [Evaluation of Rapid Efficacy of Volatile Liquid Components Against Various Test Insects] Table 6 was carried out in the same manner as in Test Example 1 except that adults of the Japanese hornet, kanabun, and bugs were used as test insects.
Spray the pesticide described in, and after spraying, the test insect falls
(KT50) time was investigated. Table 6 shows the results.

[0036]

[Table 6]

From the results shown in Table 6, the falling elevation (KT5
Since the time required to perform 0) is particularly short when the test insect is a wasp, it can be seen that iso-pentane, n-pentane, and cyclopentane are particularly effective for dropping and turning the wasp.

[0038]

EFFECTS OF THE INVENTION Since the pesticidal composition of the present invention has excellent fast-acting properties, when it is applied to a hornet, it has the effect of instantly calming and stopping its aggressive flying behavior and reducing stinging accidents caused by hornets. Play. Further, by applying the pesticide of the present invention to a hornet's nest, hornets can be almost completely eliminated, and the safety of disposal treatment after application can be enhanced.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01N 53/04 A01N 53/00 504E 53/08 504B 508A 508Z (72) Inventor Masaaki Sugiura Ohno, Saeki-gun, Hiroshima Prefecture 1-10-14, Yasakacho F-term (reference) 4H011 AC01 BA06 BB01 BB03 BB15 DA21 DB05 DE16

Claims (5)

[Claims] 1. At least one selected from the group consisting of iso-pentane, n-pentane and cyclopentane
A waspicidal agent containing species of volatile liquid components. 2. The method according to claim 1, further comprising an insecticidal component.
The disinfectant as described. 3. The insecticidal component is at least one selected from the group consisting of d.d-T80-praletrin, pyrethrin, arethrin, tetramethrin, resmethrin, phenothrin, tralomethrin and etofenprox.
3. The pesticide according to claim 2, which is a seed. 4. A mass spray type aerosol.
4. The pesticide according to any one of to 3 above. 5. A hornet, wherein the pesticide according to any one of claims 1 to 4 is applied to a hornet's nest, and the volatile liquid component evaporates in the nest to stop the action of the hornet. How to get rid of.