JP2011173811A - Repellent for harmful animal, repellent tablet for harmful animal and repellent sheet for harmful animal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repellent for harmful animals, a repellent tablet for harmful animals and a repellent sheet for harmful animals that exhibit high repellent effects against wild animals which damage crops or trees, namely, so-called harmful animals, and retain repelling effects over a long period of time. <P>SOLUTION: The repellent for harmful animals comprises as an effective ingredient a 6-10C unsaturated aldehyde and/or a 5-9C saturated carboxylic acid which are an odor component given out from the human body. A sustainingly releasable repellent tablet for harmful animals or a sustainingly releasable repellent sheet for harmful animals containing the repellent for harmful animals retains repellent effects over a longer period of time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pest repellent, a pest repellent tablet, and a pest repellent sheet.

  In recent years, due to deforestation and land development, the living area of wild animals has been narrowed. For this reason, particularly in autumn and winter, there is a shortage of food in the living area, and wild animals that have appeared on farmland in search of food frequently damage crops. In addition, wild animals have peeled bark of afforested trees and have eaten shoots and leaves of seedlings. Since the tree from which the bark has been peeled is decayed, the value as a timber is notably lowered, and in some cases it may wither. Also, seedlings that have eaten shoots will stop growing. Such damage is an extremely serious problem, and urgent countermeasures are required.

  Conventionally, in order to solve such problems, a method of surrounding farmland and planted areas with a protective fence such as a wire mesh or a log has been taken. However, this method is not a problem if small-scale farmland or a small number of trees are to be protected, but in reality, it is necessary to enclose a vast farmland or a very large number of trees. There was a problem that the nature was bad. In addition, this method is costly and often causes the protective fence to fall down due to wind and snow, etc., so that it did not substantially suppress the damage.

  An alternative to the above measures is the use of substances that have a repellent effect on wild animals. For example, methods have been taken to prevent wild animals from approaching farmland or planted areas by sowing the excrement of animals that are natural enemies of wild animals. In addition, methods have been taken to prevent wild animals from approaching farmland or planted areas by spraying microcapsules containing animal repellents such as capsaicin.

  However, since animal manure has a strong odor, there is a problem that the operation of sowing the manure is painful and the sustainability of the effect is reduced by wind and rain. In addition, currently used animal repellents are not satisfactory in terms of high effectiveness and sustainability.

Japanese Patent Laid-Open No. 7-76502

  The present invention has been made in view of the above circumstances, and its object is to have a high repellent effect on wild animals that damage crops and trees, so-called pests, and the repellent effect lasts for a long time. It is to provide a pest repellent, a pest repellent tablet, and a pest repellent sheet.

  In order to solve the above-mentioned problems, the present inventors have conducted extensive research and found that an odor component emitted from the human body is effective in repelling harmful animals, thereby completing the present invention.

  Specifically, the present invention provides the following.

  (1) A pest repellent containing an unsaturated aldehyde having 6 to 10 carbon atoms and / or a saturated carboxylic acid having 5 to 9 carbon atoms, which is an odor component emitted from the human body, as an active ingredient.

  (2) The pest repellent according to (1), wherein the unsaturated aldehyde is 2-nonenal.

  (3) The pest repellent according to (1), wherein the saturated carboxylic acid is at least one selected from the group consisting of pelargonic acid and isovaleric acid.

  (4) The pest repellent according to any one of (1) to (3), wherein the pest is a wild boar.

  (5) A sustained release pest repellent tablet containing the pest repellent according to any one of (1) to (4).

  (6) A pest that prevents a pest from approaching the tree by suspending the tablet for repelling the pest according to (5) in a container having air permeability and then suspending the tablet on the tree to be protected. How to use repellent tablets.

  (7) A sustained release pest repellent sheet obtained by dispersing or impregnating a sustained release microcapsule encapsulating the pest repellent according to any one of (1) to (4) on a sheet .

  (8) A method for using a pest repellent sheet for preventing a pest from approaching the tree by laying the pest repellent sheet according to (7) on a ground around a tree to be protected.

  According to the pest repellent, pest repellent tablet, and pest repellent sheet of the present invention, wild animals that damage crops and trees, so-called pests can be effectively repelled over a long period of time. .

It is a figure which shows 1st embodiment of the usage method of the repellent tablet for pests. It is a figure which shows 2nd embodiment of the usage method of the repellent tablet for pests. It is sectional drawing of 1st embodiment of the repellent sheet for pests. It is sectional drawing of a microcapsule. It is a figure which shows the modification of the repellent sheet for pests. It is a figure which shows the modification of the repellent sheet for pests. It is a figure which shows 1st embodiment of the usage method of the pest repellent sheet. It is a figure which shows 2nd embodiment of the usage method of the repellent sheet for pests. It is a figure which shows 3rd embodiment of the usage method of the repellent sheet for pests.

  Hereinafter, specific embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments, and may be implemented with appropriate modifications within the scope of the object of the present invention. can do.

  In the present invention, the problem of effectively avoiding wild animals that damage crops and trees, so-called pests over a long period of time, is an unsaturated aldehyde having 6 to 10 carbon atoms and / or odorous components emitted from the human body. This was solved by a novel pest repellent containing a saturated carboxylic acid having 5 to 9 carbon atoms as an active ingredient. And the repellent effect was maintained over a long period of time by making the said repellent for pests into sustained release pest repellent tablets and pest repellent sheets.

[Pest repellent]
The repellent for pests of the present invention contains an unsaturated aldehyde having 6 to 10 carbon atoms and / or a saturated carboxylic acid having 5 to 9 carbon atoms, which is an odor component emitted from the human body, as an active ingredient. . In the present specification, the harmful animal refers to all animals that cause harm to humans and livestock or that damage crops and afforested trees. It mainly refers to wild animals, but is not limited to this, and includes livestock and pets as long as they are harmful to humans and livestock, and produce crops and afforested trees. Examples thereof include animals belonging to the Bovine subfamily such as deer, antelope, sheep, Kyon, Ezo deer, reindeer, etc., animals belonging to the wild boar subfamily such as wild boar and Beckery, and exotic species such as raccoon and raccoon. Among these animals, the pest repellent of the present invention is more effective against wild boar having a particularly excellent olfactory sense.

  The active ingredient contained in the repellent for pests of the present invention is an unsaturated aldehyde having 6 to 10 carbon atoms and / or a saturated carboxylic acid having 5 to 9 carbon atoms, which is an odor component emitted from the human body. Here, the odor emitted from the human body includes, for example, those emitted from various parts of the body such as foot odor, moth odor and scalp odor, and those emitted from the trunk such as aging odor recognized after middle-aged and older . In the pest repellent of the present invention, among these odor components, an unsaturated aldehyde having 6 to 10 carbon atoms and / or a saturated carboxylic acid having 5 to 9 carbon atoms is contained as an active ingredient for repelling pests. To do. The present invention is significant in that it has been found for the first time that an unsaturated aldehyde having 6 to 10 carbon atoms or a saturated carboxylic acid having 5 to 9 carbon atoms, which is an odor component emitted from the human body, has a repellent effect on pests. .

  In the pest repellent of the present invention, the unsaturated aldehyde has 6 to 10 carbon atoms. Examples of unsaturated aldehydes having 6 to 10 carbon atoms, which are odorous components emitted from the human body, include 2-hexenal (carbon number: 6) and 2-octenal (carbon number: 8), 2-nonenal (carbon number: 9), and these trans isomers. Among these, 2-nonenal is preferable because it has a high repellent effect on pests and has a long-lasting effect.

  In the pest repellent of the present invention, the saturated carboxylic acid has 5 to 9 carbon atoms. Examples of saturated carboxylic acids having 5 to 9 carbon atoms, which are odor components emitted from the human body, include isovaleric acid (carbon number: 5), which is the cause of foot odor, and pelargonic acid (carbon, which is the odor possessed by men in their 30s. Number: 9) etc. are mentioned. Among these, pelargonic acid having a high repellent effect on pests and a long-lasting effect is preferable.

  In addition, in the pest repellent of this invention, you may contain the said unsaturated aldehyde and the said saturated carboxylic acid individually or in combination of 2 or more types as an active ingredient.

  The blending amount of the unsaturated aldehyde and the saturated carboxylic acid in the pest repellent of the present invention is not particularly limited, and the target of repelling, the type of unsaturated aldehyde or saturated carboxylic acid to be selected, other blending components, and dosage form However, when 2-nonenal is used for repelling boar, for example, it is preferably 0.3% by mass or more, more preferably 2% by mass or more. It is.

  If the blending amount is less than 0.3% by mass, it may be difficult to sufficiently exhibit the desired repellent effect. On the other hand, when the blending amount exceeds 20% by mass, a repelling effect corresponding to the increase in the blending amount may not be recognized, resulting in high cost. Further, depending on the type of unsaturated aldehyde to be selected, there may be a problem in formulation.

  The pest repellent of the present invention can be formulated into liquids, solids, impregnated solid preparations, powders, suspensions, emulsifiers, sprays, aerosols, granules, tablets and the like. These preparations can be prepared by commonly used methods using additives usually used for formulation. The form of the preparation may be appropriately selected in consideration of the repelling object, the period of use, the environment of the place of use (temperature, humidity, air volume, etc.), the desired repellent effect, and the like.

  In order to maintain the repellent effect for a long period of time, the repellent for harmful animals of the present invention may be prepared by adding a retention agent having a retention effect that uniformly vaporizes the active ingredient and delays the volatilization rate. Examples of the retentive agent include diethyl phthalate and benzyl benzoate.

  In addition, the pest repellent of the present invention can also be made into a powder by adsorbing the active ingredient on activated carbon. Furthermore, the retention effect can be enhanced by microencapsulation using an encapsulating agent such as gelatin or gum arabic. Further, sustained release microcapsules can be formed using silicon dioxide as a wall material. Sustained release microencapsulation is preferable because the repellent effect of the active ingredient can be sustained over a long period of time.

  When the pest repellent of the present invention is used as a solution, the solution can be further impregnated into an inorganic porous material to form a tablet. Examples of the inorganic porous material include calcium silicate and silica gel. The tablets and the like thus obtained are preferably used after being filled into a bag made of a breathable material such as a nonwoven fabric or a breathable container.

  The repellent for pests of the present invention may be blended with other repellents, insect repellents, insecticides, fungicides, fungicides, fragrances, coloring agents, etc., as long as the object of the present invention is not impaired. .

[Pest repellent tablet]
The pest repellent tablet of the present invention is a sustained-release tablet containing the above repellent. In this invention, the said repellent was made into the sustained release tablet, the volatilization rate of the said active ingredient was delayed, and the repellent effect was maintained over a long period of time.

  In this specification, sustained release refers to the property of releasing active ingredients over time. Due to this property of sustained release, it is possible to keep the concentration of the active ingredient constant in a place where it is not desired to bring in harmful animals. Although not an example of a tablet, for example, in the case where the above-mentioned active ingredient is soaked in absorbent cotton, most of the active ingredient is released at an early stage and does not have a sustained release property. In addition, when giving sustained release property to a tablet, the said active ingredient is mix | blended with silicon dioxide, titanium dioxide, aluminum oxide, porous ceramics etc., for example. Among these, it is preferable in that a load is not given to the environment around the place where the silicon dioxide is installed. In the pest repellent tablet of the present invention, the amount of these is not particularly limited, and is appropriately adjusted in consideration of the desired sustained release, but preferably 0.3 to 20% by mass, Preferably it is 5-10 mass%.

  In the pest repellent tablet of the present invention, the blending amount of the repellent is not particularly limited, and is appropriately determined in consideration of the repelling target, the type of active ingredient in the repellent, the method of use, the period of use, the place of use, etc. For example, when the active ingredient in the repellent for pests is 2-nonenal and the repelling target is a wild boar with excellent olfaction, it is included per pest repellent tablet It is preferable to blend the above pest repellent so that the amount of 2-nonenal is 0.1 to 5.0 g. In addition, when the target of repelling is deer, the above repellent for pests should be blended so that the amount of 2-nonenal contained in one repellent tablet for pests is 0.5 to 5.0 g. Is preferred.

  The pest repellent tablet of the present invention may contain two or more pest repellents of the present invention as long as the effects of the present invention are not impaired, and is known as the pest repellent of the present invention. And a pest repellent. Furthermore, you may include antiseptic | preservative, antioxidant, etc.

  In the pest repellent tablet of the present invention, an excipient may be blended in order to obtain an appropriate hardness. Examples of the excipient include dextrin, lactose, celluloses, gum arabic and the like. Among these, dextrin is preferable in that it is harmless to animals and humans and is low in cost. The blending amount of the excipient is not particularly limited and is appropriately adjusted according to the purpose, but is preferably 1 to 20% by mass, more preferably 3 to 15% by mass. If it is the said range, favorable shape retention property is shown. Further, a lubricant may be blended in order to improve fluidity and releasability and improve workability. In addition, you may mix | blend a binder, a disintegrating agent, etc. as needed.

  In the pest repellent tablet of the present invention, its shape is not particularly limited, and may be a substantially circular shape, a substantially triangular shape, a substantially rectangular shape, etc. in a top view, and when having a corner like a triangular shape or a rectangular shape, The corners may be rounded. Moreover, the shape which has a protrusion on the surface like konpeito and tetrapod (trademark) may be sufficient. Such a shape is not easy to roll and is easy to handle, but when a sustained release property is imparted to the pest repellent tablet of the present invention, the surface area becomes larger, and thus a more sustained release effect is exhibited. This is preferable. Further, when a plurality of containers are used in a breathable container, a gap is formed between the tablets. This is preferable in that the breathability is improved and a sustained release effect is exhibited. Other shapes that exhibit such effects include star shapes. In addition, as a general form, for example, a substantially circular cylinder having a substantially circular shape in a top view can be cited. In this case, the upper surface portion and the bottom surface portion may be in the shape of a flat cylinder, and the upper surface portion and the bottom surface portion are in the shape of a cylinder having a bulging portion on a convex curved surface with a gentle arc shape when viewed from the side. It may be. In addition, the latter shape is preferable in that the tablet is not easily disintegrated by rainwater and the repellent effect is further sustained.

  The size of the tablet is not particularly limited, and can be appropriately set depending on, for example, the amount used, the method of use, the place of use, etc., preferably, the diameter is 5 to 100 mm, and the height is 1 to 30 mm. More preferably, the diameter is 10 to 50 mm and the height is 2 to 15 mm. If it is the said magnitude | size, a usage-amount can be finely adjusted according to a repelling object, a usage method, etc.

The pest repellent tablet of the present invention is formed into a tablet as described above using, for example, a tableting machine. The repellent tablet of the present invention was obtained, for example, by sufficiently dissolving the repellent (solution) of the present invention in water, adding silicon dioxide and dextrin to the resulting aqueous solution of the repellent, and thoroughly mixing them. After the mixture is dried, it can be molded by filling into a tableting machine and tableting (pressure molding). Further, the repellent tablet of the present invention is, for example, adding water to a sustained-release microcapsule encapsulating the active ingredient and mixing it into a tablet, or watering a mixture of the microcapsule and an excipient. In addition, it can be formed by mixing and tableting.
Furthermore, the repellent tablet of the present invention is, for example, a granular granulated product obtained by adding water to a sustained-release microcapsule encapsulating the above-mentioned active ingredient, mixing it, granulating it using an extruder, etc., and drying it. Or by adding water to the above mixture of microcapsules and excipients and mixing, and then granulating and drying the granulated granulated product using an extruder or the like Can be formed. A tableting machine will not be specifically limited if appropriate hardness is obtained, For example, a single type tableting machine, a high-speed tableting machine, etc. are mentioned. The pressure for tableting (pressure molding) is preferably 5 kN or less. If a pressure exceeding 5 kN is applied, the microcapsules may be crushed.

  Since the pest repellent tablet of the present invention is in the shape of a tablet, it can be repelled accurately from the place by installing it in a place where it is desired to repel the pest. Sustainable repellent effect can be expected because it is less likely to be washed away by wind. Furthermore, since it is a sustained-release tablet, the active ingredient slowly evaporates and the repellent effect lasts for a long time.

  Hereinafter, the usage method of the pest repellent tablet of this invention is demonstrated.

  As a method of using the pest control tablet 1 of the present invention, for example, as shown in FIG. 1, the pest control tablet 1 of the present invention is a beast in front of a point where the animal path K and the mountain path Y intersect. There is a method for preventing harmful animals from entering the mountain path Y from the beast path K and entering the farmland through the mountain path Y by being installed on the path K so as to be perpendicular to the beast path K. Can be mentioned. Moreover, the method of preventing the invasion of a pest is also mentioned by rolling the pest repellent tablet 1 of the present invention so as to surround a farmland or a tree where the damage of the pest is concerned.

  Furthermore, as a method of using the pest repellent tablet 1 of the present invention, as shown in FIG. 2, the pest repellent tablet 1 of the present invention is accommodated in a breathable container 2 (FIG. 2 (A)). ) Using the hook 2B provided on the upper surface of the container main body 2A, the adult tree S to be protected from the harmful animal by suspending it from the adult tree S that is likely to be damaged by the harmful animal (FIG. 2B). To prevent it from approaching. According to such a method of use, the active ingredient can be gradually volatilized by the wind, and in particular, the bark can be effectively prevented from being peeled off.

  The container having air permeability is not particularly limited, and examples thereof include a bag using a non-woven fabric, a cloth, a plastic having a hole through which air passes, a basket using a metal and the like. The container which has a hole of a size which can visually recognize the accommodated pest repellent tablet 1 is preferable in that the replenishment time of the pest repellent tablet 1 can be confirmed. In addition, the magnitude | size and shape of the pest repellent tablet 1 accommodated in a container are not specifically limited.

  In addition to adult trees that are likely to be damaged by pests, crops can also be protected from pests by hanging them on ropes, fences, etc. that surround farmland.

  In the method of using the pest repellent tablet 1 of the present invention, the amount of the pest repellent tablet 1 to be used is not particularly limited, and the repellent object, the type of active ingredient in the repellent, the method of use, the period of use, the use Although it is set as appropriate in consideration of the location and the like, for example, it may be adjusted so that an effective amount of the active ingredient is present in a space where it is desired to avoid the harmful animals.

[Pest repellent sheet]
The pest repellent sheet 3 of the present invention is a sustained release sheet formed by dispersing or impregnating a sustained release microcapsule 4 containing the pest repellent of the present invention on a sheet 5. Features. In the pest repellent sheet 3 of the present invention, a sustained release microcapsule 4 containing the pest repellent of the present invention is dispersedly applied or impregnated on the sheet 5 to obtain a sustained release sheet. The volatilization rate of the active ingredient was delayed so that the repellent effect was maintained over a long period of time.

  As shown in FIG. 3, a pest repellent sheet 3 according to an embodiment of the present invention is a microscopic product in which a sustained-release microcapsule 4 containing the repellent of the present invention is dispersedly coated on the surface of a sheet 5. Since the capsule layer 6 is formed, the active ingredient in the pest repellent is slowly volatilized. Therefore, since the concentration of the active ingredient in the vicinity of the pest repellent sheet 3 can be kept constant for a long time, it is possible to effectively prevent the pests from approaching the pest repellent sheet 3.

  It should be noted that the back surface of the sheet 5 has an adhesion layer 7 for reliably installing the pest repellent sheet 3 in places where there are irregularities such as trees with rough bark and trees, and pests in places where there are no irregularities. An adhesive layer for securely installing the repellent sheet 3 may be formed. Further, if necessary, the sheet 5 may be omitted and the microcapsule layer 6 may be formed on the surface of the adhesion layer 7 or the microcapsule 4 may be impregnated in the adhesion layer 7. .

  For the adhesion layer 7, for example, non-woven fabric, paper, cloth or the like is preferably used, and for the adhesion layer, for example, natural rubber-based, butyl rubber, polyisoprene, polyisobutylene, polychloroprene, which are known pressure-sensitive adhesives, are used. , Synthetic rubber resins such as styrene-butadiene copolymer resins, silicone resins, acrylic resins, polyvinyl acetate, vinyl acetate resins such as ethylene-vinyl acetate copolymers, urethane resins, acrylonitrile, hydrocarbon resins, A material obtained by impregnating a nonwoven fabric, paper, cloth, or the like with a rosin resin such as an alkylphenol resin, rosin, rosin triglyceride, or hydrogenated rosin can be used.

  In the pest repellent sheet 3 according to the embodiment of the present invention, the sheet 5 includes non-woven fabric, thin paper, bleached kraft paper, titanium paper, paperboard, gypsum board paper and the like, polyethylene film, polypropylene film, polyvinyl chloride film. Plastic films such as polyethylene terephthalate film and nylon film can be used.

  In the pest repellent sheet 3 according to the embodiment of the present invention, a microcapsule layer 6 in which the microcapsules 4 containing the pest repellent of the present invention are dispersedly applied is formed on the surface of the sheet 5. . The microcapsule layer 6 is formed by using a printing ink containing the microcapsule 4 containing the pest repellent of the present invention, for example, an offset printing method, a letterpress printing method, a gravure printing method, a silk printing method, etc. Can be formed.

  As shown in FIG. 4, the microcapsule 4 includes a core material 8 containing the pest repellent of the present invention and a film material 9 covering the pest repellent of the present invention. The microcapsule 4 can be produced by a known method such as an in-situ method, an interfacial polymerization method, or a coacervation method. As the membrane material 9 of the microcapsule 4, urethane resin or the like can be used.

  For example, when the microcapsules 4 are dispersed and applied by a gravure printing method, the average particle diameter of the microcapsules 4 is preferably 10 μm or less, and more preferably 2 μm or less. If the average particle size of the microcapsules 4 exceeds 10 μm, there is a possibility that plate clogging occurs during printing. For example, when the microcapsules 4 are dispersed and applied by a silk printing method, the average particle size of the microcapsules 4 is preferably 100 μm or less.

  The microcapsule 4 may contain two or more pest repellents of the present invention within a range not impairing the effects of the present invention. Also, the pest repellents of the present invention and known pest repellents may be used. A repellent may be included. Furthermore, you may include antiseptic | preservative, antioxidant, etc.

  In the pest repellent sheet 3 according to the embodiment of the present invention, the application amount or the impregnation amount of the microcapsule 4 is not particularly limited, and the type of repellent, the type of active ingredient in the repellent in the microcapsule 4, and the usage method However, when the active ingredient in the repellent is 2-nonenal and the repellent target is a wild boar with excellent olfaction, 2-nonenal is used. The microcapsules 4 are applied or impregnated so that the amount is preferably 0.3 to 10% by mass, more preferably 3 to 5% by mass. Moreover, when the object to be repelled is deer, the microcapsules 4 are applied or impregnated so that 2-nonenal is preferably 1.5 to 10% by mass, more preferably 3 to 8% by mass. When the coating amount or the impregnation amount is less than the lower limit, it may be difficult to sufficiently exhibit the desired repellent effect. On the other hand, if the coating amount or the impregnation amount exceeds the above upper limit value, a repelling effect commensurate with the increase in the coating amount or the impregnation amount may not be recognized, resulting in an increase in cost.

  The shape of the repellent sheet 3 for pests according to the present invention is not particularly limited, and may be an elongate strip. For example, as shown in FIG. 5, a goodwill shape provided with a cut portion (FIG. 5A). ), A shape in which a hole is provided in the center (FIG. 5B), or a net shape (FIG. 5C). In addition, as shown in FIG. 6, the repellent sheet 3 for pests according to the present invention may be processed into a cast-line shape (FIG. 6 (A)), and the tape-shaped pest-relief sheet of the present invention is used for the line. The repellent sheet 3 may be sandwiched like a paper droop (FIG. 6B). In the case of a goodwill shape (FIG. 5A), the active ingredient can be effectively volatilized by the wind. In the case of a shape in which a hole is provided in the center (FIG. 5B), it is difficult to receive wind resistance, and thus the sheet is difficult to cut. In the case of a net shape (FIG. 5C), stretchability is imparted, so that handling such as installation becomes easy. In the case of a long string (Fig. 6 (A)), the amount of the repellent for pests of the present invention can be blended in a larger amount than in the case of a sheet. Can be sustained. It is hard to cut and strong.

  The thickness of the pest repellent sheet 3 of the present invention is not particularly limited, but is more preferably 10 to 60 μm from the viewpoint of ease of handling, cost, durability, and the like.

  The pest repellent sheet 3 according to the present invention is in the form of a sheet. Therefore, by installing the pest repellent sheet 3 in a place where it is desired to repel the pest or surrounding a place where it is desired to repel the pest, Can be repelled. In addition, since the repellent containing the active ingredient is encapsulated in the sustained-release microcapsule 4 and dispersedly applied or impregnated on the sheet, the active ingredient slowly evaporates and the repellent effect is maintained over a long period of time.

  Hereinafter, the usage method of the pest repellent sheet 3 of this invention is demonstrated.

  As shown in FIG. 7, the method for using the pest repellent sheet 3 of the present invention lays the pest repellent sheet 3 on the ground around the seedling N to be protected. Prevent access. According to such a method of use, since the active ingredient gradually volatilizes around the seedling N from the pest repellent sheet 3, it is possible to effectively prevent the harmful beast G from eating the sprout part of the seedling N. Can do.

  In the method for using the pest repellent sheet 3 of the present invention, as shown in FIG. 7, it is preferable to provide a cut portion 10 in the pest repellent sheet 3. By providing such a cut portion 10, it can be installed not only at the time of planting but also after planting. The pest repellent sheet 3 may be fixed to the ground using a stopper in order to be surely placed on the ground.

  In addition, as shown in FIG. 8, the pest repellent sheet 3 of the present invention wraps a strip-like pest repellent sheet 3 around a tree J so as to surround a zone where the damage of the pest is feared. May be used for Further, as shown in FIG. 9, the pest repellent sheet 3 may be used so as to cover the top bud of the seedling N. By using in this way, it is possible to prevent harmful animals from eating the shoots of the seedling N. When the pest repellent sheet 3 is placed in the vicinity of the top bud of the seedling N so that the upper part has a large open shape (FIG. 9A), the active ingredient flows out through the branches by rain, The drug adheres to the entire seedling N, and the repelling effect is enhanced. In addition, when the pest repellent sheet 3 is placed in the vicinity of the top bud of the seedling N so that the lower portion has a large open shape (FIG. 9B), the active ingredient is applied to the leaves near the shoot by rain. Adheres and the repellent effect increases.

  In the method for using the pest repellent sheet 3 of the present invention, the amount of the pest repellent sheet 3 used is not particularly limited, and is the object of repellent, the type of active ingredient in the repellent, the method of use, the period of use, and the place of use. For example, it may be adjusted so that an effective amount of an active ingredient is present in a space where it is desired to avoid a harmful animal.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention does not receive a restriction | limiting at all by these description.

[Pest repellent]
<Example 1>
1 ml of 2-nonenal (trade name: trans-2-nonenal (No. 483), manufactured by Tokyo Chemical Industry Co., Ltd.) was added to 300 ml of water, and stirred for 5 minutes to sufficiently dissolve to obtain a 2-nonenal aqueous solution. . This 2-nonenal aqueous solution is soaked in 5 cm x 5 cm square absorbent cotton, perpendicular to the beast road (the path where wild boars and deer frequently appear), and between the mountain and the field. It was installed at intervals of about 60 cm so as to draw a boundary line, and the presence or absence of invasion of wild animals including wild boars and deer into the fields (footprints, feces, and food damage) was confirmed. The test period was one month.

  At the beginning of the test, in the vicinity of the place where the absorbent cotton soaked with 2-nonenal aqueous solution, there was no food damage by wild animals including wild boar and deer, and no traces of footprints and feces were confirmed. However, after it rained (7 days after installation), the repelling effect diminished, and wild boar and deer footprints and feces were confirmed. From this, although 2-nonenal shows a repellent effect on wild boars and deer, in the above-mentioned usage form, 2-nonenal soaked in absorbent cotton is likely to volatilize, and therefore, the repellent effect is exhibited in a short period of time. When it rains, 2-nonenal easily flows out from the absorbent cotton, and it has been found that a sustained effect cannot be exhibited.

[Pest repellent tablet]
<Example 2>
1 ml of 2-nonenal (trade name: trans-2-nonenal (No. 483), manufactured by Tokyo Chemical Industry Co., Ltd.), which is a repellent for harmful animals of the present invention, is added to 300 ml of water, and stirred for 5 minutes. It was made to melt | dissolve and 2-nonenal aqueous solution was obtained. 130 g of silicon dioxide (manufactured by Tosoh Silica Co., Ltd.) and 80 g of dextrin (manufactured by Matsutani Chemical Industry Co., Ltd.) were added to the 2-nonenal aqueous solution, and the mixture was stirred and mixed well for 5 minutes. The obtained mixture was molded into a round tablet using a plastic molding container, and dried for 30 minutes while appropriately applying the heat of a dryer at room temperature (about 26 ° C.). The number of tablets obtained was 30 tablets. The size (average value) of the molded product was 15 mm in diameter and 20 mm in thickness.

  In order to prevent the invasion of harmful beasts from the four beast roads in the direction of the village where the fields are located, the four animal routes where wild boars and deer frequently invade the pest avoidance tablets obtained by the above method. Installed in two places on the mountain road. In addition, a total of 15 pest repellent tablets were installed at an interval of about 60 cm per site. In order to verify the continuation of the effect, the pest repellent tablet was re-installed on the 16th day from the start of the test. The test period was 48 days, and the presence or absence of footprints was confirmed on the 16th and 48th days from the start of the test.

  When the presence or absence of footprints was confirmed on the 16th day from the start of the test, deer footprints were confirmed at one place on the animal road. However, since the footprints were interrupted in front of the place where the pest repellent tablet of the present invention was installed, the deer, whose olfactory sense was inferior to that of the wild boar, was able to approach to the front of the installation place, but 2-Nonenal on the way I noticed the odor of, and it is thought that I turned back. In addition, when the presence or absence of footprints was confirmed on the 48th day from the start of the test, the footprints of wild animals including deer were not confirmed. The deer footprint that was observed on the 16th day from the start of the test was not observed on the 48th day from the start of the test. For deer repelling, increasing the concentration of 2-nonenal seems to be more effective.

[Pest repellent tablet]
<Example 3>
1 ml of 2-nonenal (trade name: trans-2-nonenal (No. 483), manufactured by Tokyo Chemical Industry Co., Ltd.), which is a repellent for harmful animals of the present invention, is added to 300 ml of water, and stirred for 5 minutes. It was made to melt | dissolve and 2-nonenal aqueous solution was obtained. 130 g of silicon dioxide (manufactured by Tosoh Silica Co., Ltd.) and 80 g of dextrin (manufactured by Matsutani Chemical Industry Co., Ltd.) were added to the 2-nonenal aqueous solution, and the mixture was stirred and mixed well for 5 minutes. The obtained mixture was molded into a round tablet using a plastic molding container, and dried for 30 minutes while appropriately applying the heat of a dryer at room temperature (about 26 ° C.). The number of tablets obtained was 27. The size (average value) of the molded product was 15 mm in diameter and 20 mm in thickness.

  The repellent tablet for harmful animals obtained by the above method was placed perpendicular to the animal path on the animal path where wild boars and deer frequently appear. 27 pest repellent tablets were installed at intervals of about 60 cm. The test period was 2 months, and in order to verify the continuation of the effect, the pest repellent tablets were re-installed on the 11th, 27th, and 59th day of the test. Then, on the 11th day, 24th day and 59th day from the start of the test, the presence or absence of footprints and feces were confirmed. In addition, about the 11th day and 59th day from the start of a test, after confirming the presence or absence of the footprint and the trace of feces, the repellent tablet for harmful animals was re-installed. On the 59th day of the test, after re-installing the pest repellent tablet, an infrared video camera was installed, and the presence of wild animals including wild boar and deer was confirmed over the next day (60th day of the test). did.

  When the presence or absence of footprints was confirmed on the 11th, 24th, and 59th days from the start of the test, deer footprints were confirmed at a distance of about 8 m from the place where the pest repellent tablet of the present invention was installed. However, no traces of wild animals other than deer or traces of feces were found. In addition, no infestation was confirmed (60th day from the start of the test). The deer is less olfactory than the wild boar, so it seems that it was able to approach several meters before the place where the tablet was installed.

  From the above results, it was suggested that the repellent tablet for pests of the present invention containing 2-nonenal as an active ingredient is effective in repelling wild animals including wild boar and deer. In particular, it was suggested that it is extremely effective in repelling wild boar. In addition, it seems that an effect will increase more by raising the density | concentration of 2-nonenal with respect to repelling of a deer.

DESCRIPTION OF SYMBOLS 1 Pest repellent tablet K Beast road Y Mountain path 2 Container 2A Container body 2B Hook S Adult tree 3 Pest repellent sheet 4 Microcapsule 5 Sheet 6 Microcapsule layer 7 Adhesion layer 8 Core material 9 Film material N Seedling G Pest 10 Cut section J Tree

Claims (8)

  A repellent for pests containing, as an active ingredient, an unsaturated aldehyde having 6 to 10 carbon atoms and / or a saturated carboxylic acid having 5 to 9 carbon atoms, which is an odor component emitted from the human body.   The pest repellent according to claim 1, wherein the unsaturated aldehyde is 2-nonenal.   The pest repellent according to claim 1, wherein the saturated carboxylic acid is at least one selected from the group consisting of pelargonic acid and isovaleric acid.   4. The pest repellent according to claim 1, wherein the pest is a wild boar.   A sustained release pest repellent tablet containing the pest repellent according to any one of claims 1 to 4.   6. A pest repellent tablet for preventing a pest from approaching the tree by hanging the repellent tablet for a pest according to claim 5 in a container having air permeability and then suspending the tablet on the tree to be protected. How to use.   5. A sustained release pest repellent sheet obtained by dispersing or impregnating a sustained release microcapsule encapsulating the pest repellent according to claim 1 on a sheet.   A method for using a pest repellent sheet for preventing a pest from approaching the tree by laying the pest repellent sheet according to claim 7 on a ground around a tree to be protected.

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