JP2013071900A - Gastropod expellant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gastropod expellant which can safely and inexpensively obtain high extermination effect.SOLUTION: The gastropod expellant includes powdery organic acid 30 and a carrier 10 carrying the organic acid 30 at the outer face. Preferably, in the gastropod expellant, a coating 20 of drying oil is formed at the outer face of the carrier 10, and the powdery organic acid 30 is made to adhere to the carrier by the drying oil.

Description

  The present invention relates to a gastropod extermination agent that exerts an extermination effect on gastropods.

  Since gastropods such as slugs can cause damage to crops, for example, it has been attempted to prevent damage to crops using pesticides and repellents. As one example, for example, as disclosed in Patent Document 1, a material obtained by impregnating zeolite with a repellent component or a disinfecting component is known.

JP 2001-10903 A

  However, even if a chemical in which each component is impregnated with zeolite is attached to gastropods, the amount of each component directly touched by gastropods is small, and it is considered that the effect is particularly lacking.

  Therefore, it is conceivable that the disinfectant is constituted only by the disinfecting component without impregnating the disinfecting component into the zeolite. However, since the extermination component is expensive, if only it is used as an extermination agent, the price of the extermination agent increases.

  In addition, there is a restriction that it is not possible to use drugs that are dangerous to the human body or that pollute the environment for extermination of gastropods.

  This invention is made | formed in view of this point, The place made into the objective is to be able to obtain the high extinction effect safely and cheaply.

  In order to achieve the above object, in the present invention, an organic acid is supported on the outer surface of the carrier.

  The first invention includes a powdery organic acid and a carrier carrying the organic acid on the outer surface.

  According to this configuration, since the organic acid is supported on the outer surface of the carrier, when the pesticide is used on the gastropod, the organic acid comes into direct contact with the gastropod. Gastropods that have come into contact with organic acids will eventually die.

  Further, since the organic acid is supported on the carrier and the disinfectant is not composed of only the organic acid, the cost of the disinfectant can be reduced by using a less expensive carrier than the organic acid.

  Furthermore, the organic acid does not adversely affect the human body and the environment as long as it is used for extermination of gastropods.

  A second invention is characterized in that, in the first invention, a coating of a drying oil is formed on the outer surface of the carrier, and the organic acid is adhered to the carrier by the drying oil.

  According to this configuration, it becomes possible to adhere the organic acid to the carrier with the drying oil that does not adversely affect the human body and the environment.

  A third invention is characterized in that, in the first or second invention, the carrier is composed of a porous body, and the carrier is impregnated with an organic acid.

  According to this configuration, it is possible to obtain a disinfecting effect and also a repellent effect by malic acid impregnated in the carrier.

  According to the first invention, since the organic acid is supported on the outer surface of the carrier, a high extermination effect can be obtained safely and inexpensively.

  According to the second invention, since the organic acid is adhered to the carrier with the drying oil, it is possible to prevent the human body and the environment from being adversely affected.

  According to the third invention, since the support composed of the porous body is impregnated with the organic acid, the disinfecting effect can be further enhanced and the repelling effect of the organic acid released from the support can be improved over a long period of time. Can be obtained.

It is an expanded sectional view of the gastropod extermination agent concerning embodiment. It is a figure explaining the experimental environment of the extermination effect. It is a graph which shows a lethality rate. It is a graph which shows lethal time. It is a figure explaining the experimental environment of the repellent effect which a disinfectant has. It is a graph which shows a rain resistance test result. It is a graph which shows the durability of an effect.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is an enlarged cross-sectional view of a gastropod pesticide 1 according to an embodiment of the present invention. The pesticide 1 exerts an insecticidal effect, that is, a control effect, on, for example, slugs such as Japanese black slugs, Chinese black slugs, and Japanese black slugs, as well as mussel and snails.

  The pesticide 1 includes a zeolite 10 as a carrier, malic acid as an organic acid impregnated in the zeolite 10, linseed oil 20 as a dry oil covering the zeolite 10, and an organic acid supported on the outer surface of the zeolite 10. And a large number of malic acid powders 30.

  The zeolite 10 has an average particle size of 0.8 mm or greater and 2.0 mm or less. If the average particle size of the zeolite 10 is smaller than 0.8 mm, for example, it will be easy to flow when it rains, and it will be blown off by strong wind, so 0.8 mm or more is preferable. If the average particle size of the zeolite 10 is larger than 2.0 mm, it is too large for the common size slug, so that the pesticide 1 is difficult to adhere.

  The zeolite 10 is impregnated with an aqueous solution of malic acid while being subjected to a cation adsorption treatment with a saline solution, as will be described in detail later. That is, an aqueous solution of malic acid is present in many fine pores of the zeolite 10.

  In all zeolites 10, the entire outer surface is not covered with a linseed oil coating, but there are also zeolites 10 in which a part of the outer surface of the zeolite 10 is not covered with a linseed oil coating as shown in FIG. . This is because there is a place where linseed oil hardly adheres due to the irregular shape of the zeolite 10. For the same reason, the thickness of the linseed oil coating is not uniform.

  The malic acid powder 30 is attached to the zeolite 10 by the adhesive force of linseed oil. Since the linseed oil has a weak adhesive force, the malic acid powder 30 separates from the zeolite 10 even if the malic acid powder 30 is lightly touched.

  Next, the manufacturing point of the pesticide 1 configured as described above will be described.

  After preparing the zeolite 10, salt solution, malic acid aqueous solution, linseed oil, and malic acid powder 30 as raw materials, the zeolite 10 is first subjected to cation adsorption treatment with saline solution. That is, in the zeolite 10, the silicon at the center of the crystal lattice may be replaced with aluminum, and cation deficiency may occur. In the case where cations are deficient, it is considered that malic acid is impregnated into zeolite 10 and malic acid cations (hydrogen ions) are combined with aluminum ions of zeolite 10 to make it difficult to release malic acid. Therefore, the aluminum ions are deionized by cation adsorption treatment.

  The salt solution is obtained by dissolving salt corresponding to 1 part by weight of the pesticide 1 in a sufficient amount of water. While stirring the zeolite 10 in the container, a saline solution is introduced into the container and attached to the zeolite 10. The salt solution adhering to the zeolite 10 is taken into the inside due to the adsorptivity of the zeolite 10, and sodium ions are combined with aluminum ions, whereby the aluminum ions are deionized. The above is the cation adsorption treatment step. When salt is increased too much, the release property of malic acid becomes too good and the water resistance deteriorates.

  Thereafter, an aqueous solution of malic acid is charged into the container and allowed to adhere to the zeolite 10 while stirring. The amount of malic acid is an amount corresponding to 10 parts by weight of the pesticide 1. Then, as in the case of the cation adsorption treatment, an aqueous solution of malic acid is taken into the zeolite 10, and the zeolite 10 impregnated with the aqueous solution of malic acid is obtained. The above is the malic acid impregnation step.

  Next, linseed oil is put into the container while stirring the zeolite 10 impregnated with malic acid in the container. The input amount of linseed oil is an amount corresponding to 5 parts by weight of the pesticide 1. Since linseed oil is a dry oil, it contains a lot of double bonds, and therefore tends to harden in the air. For this reason, as soon as the linseed oil adheres to the zeolite 10, drying begins, and a coating of linseed oil is formed on the outer surface of the zeolite 10. Since the linseed oil which is easy to dry in the air is used, a film is formed at an early stage. Further, since the zeolite 10 has an irregular shape, the linseed oil does not adhere uniformly, and there may be a place where the linseed oil does not adhere to a part of the zeolite 10.

  The dried linseed oil has a different structure from the original unsaturated fatty acid and is stable and cannot be dissolved by a solvent or heating. In particular, in the case of linseed oil, the formed film is tough and has high water resistance, so that the film is maintained over a long period of time. The above is the film forming step.

  Before the linseed oil is completely solidified, malic acid powder 30 is put into a container of zeolite 10. The input amount of the malic acid powder 30 is an amount corresponding to 3 parts by weight of the pesticide 1. The average particle size of the malic acid powder 30 is preferably smaller than the average particle size of the zeolite 10. For example, it is preferable to make it smaller than 0.8 mm. By making it in this range, malic acid powder 30 tends to adhere to slugs.

  The malic acid powder 30 put in the container adheres to the outer surface of the zeolite 10 by the adhesive force of linseed oil while being stirred together with the zeolite 10. That is, linseed oil has both the role of a film-forming agent that forms a coating of zeolite 10 and the role of an adhesive that attaches malic acid powder 30 to zeolite 10, so it carries malic acid powder 30. It is not necessary to add an additional adhesive for the purpose. The above is the malic acid powder supporting step.

  For example, when slugs come into contact with malic acid powder 30 adhering to zeolite 10, malic acid powder 30 will come into contact with the mucus present on the surface of slugs. The acid powder 30 adheres to the slugs due to the adhesive force of the mucus and is easily separated from the zeolite 10.

  The cation adsorption treatment with the saline solution may not be performed, and in this case as well, a slug repellent effect can be obtained as will be described in detail later.

  Next, the removal effect of the pesticide 1 according to the embodiment will be described. The experiment on the extermination effect was performed as shown in FIG. That is, place a water-tight Kim towel on a flat desk, place a slug on the Kim towel, and place a 60mm diameter open cylinder on the Kim towel so that the slug enters the cylinder. Put. Then, after spraying 5 g of the pesticide 1 from the top of the cylinder, the cylinder is removed and slugs are observed. This was repeated for each of the pesticides 1 of Comparative Examples in Table 1 and Invention Products 1 to 3.

  The comparative example differs from that of the embodiment in that it does not have malic acid powder, and the others are the same. The comparative example is 10 parts by weight of malic acid, 1 part by weight of sodium chloride, 1 part by weight of linseed oil, and no malic acid powder.

  Invention product 1 has 10 parts by weight of malic acid, 1 part by weight of sodium chloride, 1 part by weight of linseed oil, and 1 part by weight of malic acid powder 30.

  Invention product 2 is 10 parts by weight of malic acid, 1 part by weight of sodium chloride, 1 part by weight of linseed oil, and 2 parts by weight of malic acid powder 30.

  Invention product 3 is 10 parts by weight of malic acid, 1 part by weight of sodium chloride, 1 part by weight of linseed oil, and 3 parts by weight of malic acid powder 30.

  As a result, as shown in FIG. 3, the lethality of slugs was 100% in all of the products 1 to 3 of the present invention, and all the insects could be killed. In the products 1 to 3 of the present invention, the malic acid powder 30 adhering to the outer surface of the zeolite 10 directly touches the slugs and is taken into the slugs of slugs, and the slugs are killed by the stimulation of malic acid.

  FIG. 4 is a graph showing the time (lethal time) required from the sprinkling of the pesticide 1 to the slug to the death. Here, “death” is a state in which the slug is no longer responding to the stimulus.

  The product 3 of the present invention has the shortest lethal time, followed by the products 2 and 1 of the present invention. In the comparative example, it is 40 seconds or longer as compared with the product 1 of the present invention. Therefore, if the malic acid powder 30 adheres to the zeolite 10 as in the products 1 to 3 of the present invention, the lethal time is significantly shortened compared to the case where the malic acid powder 30 does not adhere (comparative example). In addition, the more lethal malic acid powder 30 is attached, the shorter the lethal time.

  If the amount of malic acid powder 30 is 1 part by weight or more of the pesticide 1 as described above, sufficient lethal ability can be obtained. The upper limit amount of the malic acid powder 30 is preferably 5 parts by weight of the pesticide 1, and if 5 parts by weight, the lethal time is sufficiently shortened and the usefulness as a pesticide is increased. On the other hand, considering the cost and the lethal effect of the pesticide 1, even if the malic acid powder 30 is more than 5 parts by weight, the cost is unnecessarily increased, which is not preferable.

  In addition, in order to investigate the impact on the environment, when the product 3 of the present invention was sprinkled with an amount equivalent to the normal usage amount against the ginseng, it was left for 30 days. No harm was seen.

  Next, the repellent effect of the pesticide 1 will be described. An experimental environment as shown in FIG. 5 was constructed, and the repellent effects of the present invention product 4, the present invention product 5 and the present invention product 6 were confirmed.

  Invention product 4 is 10 parts by weight of malic acid, 1 part by weight of sodium chloride, 1 part by weight of linseed oil, and 3 parts by weight of malic acid powder 30.

  Invention product 5 is 10 parts by weight of malic acid, no salt, 5 parts by weight of linseed oil, and 3 parts by weight of malic acid powder 30.

  Invention product 6 has 10 parts by weight of malic acid, no salt, 1 part by weight of linseed oil, and 3 parts by weight of malic acid powder 30. Invention products 5 and 6 are not subjected to cation adsorption treatment because no salt is used.

  The products 4 to 6 of the present invention are subjected to artificial rain treatment assuming that it is rained. This is a process in which 60 g of each of the products 4 to 6 of the present invention are put into a sieve having a diameter of 150 mm and 8.1 L of water is sprayed evenly from above. It corresponds to 450mm when converted into actual precipitation. Although most of the malic acid powder 30 may flow due to the artificial rain treatment, the pH of the products 4 to 6 of the present invention after the artificial rain treatment is 2.98. The product 5 is 3.37, the product 6 of the present invention is 3.47, and malic acid remains in all of the products 4 to 6 of the present invention.

  As described above, when the amount of linseed oil is 1 part by weight or more of the pesticide 1, a film capable of imparting rain resistance can be obtained. The upper limit amount of linseed oil is preferably 10 parts by weight of the pesticide 1, and if it is 10 parts by weight, sufficient rain resistance can be obtained. On the other hand, if the amount of linseed oil is more than 10 parts by weight, the coating becomes too thick, the amount of malic acid released becomes extremely small, and the repelling effect is reduced, which is not preferable.

  As shown in FIG. 5, the experimental environment of the repelling effect is constructed by partitioning the ground into blocks in a substantially rectangular shape. Each 10 g of the pesticide of the present invention products 4 to 6 (dried after artificial rain treatment) is spread on the sectioned ground so as to draw a circle. In the vicinity of the center of the circle formed with the pesticide 1, carrots are placed as an attractant for attracting slugs. Further, cabbage leaves are appropriately placed on the outside of the circle formed of the pesticide 1 on the sectioned ground. Release dozens of slugs onto the sectioned ground.

  Then, it was allowed to stand for 24 hours and it was measured how many slugs entered each circle. As a result, as shown in FIG. 6, in the product 4 of the present invention, the repelling rate was 100%, and none of the animals entered the circle. In the product 5 of the present invention, the repellent rate was 87.5%, and in the product 6 of the present invention, the repellent rate was 50%, both of which were sufficient when used as the pesticide 1 outdoors. From this result, it can be seen that the repelling rate depends on pH, and the lower the pH, the higher the repelling effect by malic acid. In other words, slugs dislike the stimulus when they touch malic acid and take repellent behavior.

  The reason why the repelling rates differed between the inventive products 4 to 6 is as follows. That is, in the product 4 of the present invention, the cation adsorption treatment is performed on the zeolite 10 with saline, so that the amount of malic acid released from the zeolite 10 is the same as the products 5 and 6 of the present invention that are not subjected to the cation adsorption treatment. This is because it has increased. In addition, the repellent rate was different between the products 5 and 6 of the present invention. In the product 5 of the present invention, the amount of linseed oil was five times that of the product 6 of the present invention, and the coating with the linseed oil was strong. This is due to the low amount of malic acid.

  Next, the sustained performance of the repellent effect will be described. The experimental environment was the same as in FIG. 5, and the experiment was conducted only on the product 4 of the present invention. As a result, as shown in FIG. 7, a repelling rate of 100% is maintained until 28 days after the start of the experiment, and a strong repelling effect is obtained over a long period of time even when artificial rain treatment is performed.

  The reason is that a sufficient amount of malic acid is released by subjecting the zeolite 10 to cation adsorption treatment, and a large amount of malic acid is added to the zeolite 10 by forming a linseed oil coating on the zeolite 10. It is because it is made to discharge | release gradually, suppressing that it discharge | releases from the outer surface of 10 for a short time.

  Moreover, since the disinfectant 1 according to the embodiment gradually releases malic acid and can be used as a seasoning such as salt and linseed oil as a raw material, it can be used for humans, dogs, cats and the like. There is almost no harm when touched by pets, and there is little harm to plants as mentioned above.

  As described above, according to the disinfectant 1 according to this embodiment, the malic acid powder 30 is carried on the outer surface of the zeolite 10, so that a high disinfecting effect can be obtained safely and inexpensively.

  In addition, since malic acid powder 30 is adhered to zeolite 10 with linseed oil, it is possible to prevent adverse effects on the human body and the environment.

  Further, since the zeolite 10 is impregnated with malic acid, the extermination effect can be further enhanced, and the repellent effect of malic acid released from the zeolite 10 can be obtained over a long period of time.

  And since the zeolite 10 impregnated with malic acid was coated with linseed oil, a high repellent effect can be obtained safely over a long period of time.

  In addition, since the zeolite 10 is coated with linseed oil, the water resistance can be improved, the coating film can be reliably formed, and the repelling effect can be reliably obtained over a long period of time.

  Further, by applying a cation adsorption treatment to the zeolite 10 before impregnation with malic acid, a predetermined amount of malic acid can be ensured and a high repellent effect can be obtained.

  Further, since the cation adsorption treatment is performed with the saline solution, the cation adsorption treatment can be reliably performed at low cost.

  Moreover, the slug extermination effect can be acquired by making the malic acid powder 30 adhere to the outer surface of the zeolite 10.

  Moreover, since the malic acid powder 30 was made to adhere to the zeolite 10 using linseed oil, the disinfectant 1 having the disinfecting effect can be obtained at low cost.

  In the above embodiment, malic acid is impregnated in zeolite 10, but not limited to this, instead of malic acid, for example, an organic acid such as propionic acid, butyric acid, acetic acid, citric acid or the like may be used. Also good. Since propionic acid and butyric acid have a strong odor, acetic acid, citric acid, and malic acid are preferable from the viewpoint of feeling of use.

  In addition to zeolite 10, those that can absorb the aqueous solution of the organic acid can be used as the porous body, and examples thereof include activated carbon and pumice.

  It is also possible to coat the zeolite 10 with a drying oil other than linseed oil (for example, paulownia oil, safflower oil, enamel oil, etc.).

  Further, the cation adsorption treatment applied to the zeolite 10 can be performed with potassium ions or calcium ions in addition to salt.

  Further, instead of malic acid powder 30, another organic acid may be powdered.

  Moreover, the organic acid impregnated in the zeolite 10 may be impregnated by mixing not only one type but also a plurality of types.

  As described above, the gastropod pesticide according to the present invention can be applied to slugs, maimai, snails and the like, for example.

1 Pesticide 10 Zeolite (carrier)
20 Linseed oil 30 Malic acid powder (powdered organic acid)

Claims (3)

Powdered organic acid,
A gastropod control agent, comprising: a carrier carrying the organic acid on an outer surface. In the gastropod pesticide according to claim 1,
A gastropod pesticide, wherein a film of a dry oil is formed on an outer surface of the carrier, and the organic acid is adhered to the carrier by the dry oil. In the gastropod pesticide according to claim 1 or 2,
The carrier is composed of a porous body,
A gastropod pesticide, wherein the carrier is impregnated with an organic acid.

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