JP5086673B2 - Gastropod control agent - Google Patents

Description

  The present invention relates to a gastropod control agent, and more particularly, to a gastropod control agent that can immediately control gastropods without causing significant phytotoxicity to plants.

  Gastropods, such as slugs and snails, eat and damage useful crops in agricultural and horticultural crops cultivation. For example, gastropods injure various crops such as lettuce, Chinese cabbage, and strawberries, fruit trees such as mandarin oranges and grapes, and horticultural crops such as flower buds, and cause great damage. Moreover, these gastropods appear everywhere in a greenhouse, a garden, a field, a home, etc., and give discomfort. For example, it appears as an unpleasant pest in a kitchen or a bathroom of a house, which not only makes the residents uncomfortable, but also serves as an intermediate host for nematodes and is repelled as a hygienic pest.

  Therefore, methods and pesticides for combating gastropods have been developed. Currently usable pesticides include, for example, spray-type pesticides containing carbaryl, pyrethroid and the like as active ingredients. Although these pesticides can control gastropods to some extent, they may not be able to completely control gastropods and do not have immediate effects. In addition, when these insecticides come into contact with agricultural and horticultural crops, they may cause phytotoxicity on agricultural and horticultural crops, and the agricultural chemicals and gastropods appearing in the vicinity are sprayed with a large amount and frequently. I can't. Furthermore, since the active ingredient contained in these pesticides is also toxic to humans and pets, when gastropods are found indoors, for example, plants that are cultivated indoors such as ornamental plants In the case where gastropods appearing in the area, etc. are found, the disinfectant cannot be sprayed in large quantities and frequently.

  On the other hand, as a water-based disinfectant, for example, “30 to 59% by weight of monohydric alcohol having 1 to 4 carbon atoms with respect to the total amount, and synergists such as acetic acid, salicylic acid, sulfosalicylic acid, benzoic acid, menthol , A water-based gastropod extermination agent characterized by containing one or more selected from resorcin and chili tincture in an amount of not less than 0.2% by weight and less than 10% by weight based on the total amount. (See Patent Document 1).

  In this disinfectant, monohydric alcohol is defined as 30 to 59% by weight based on the total amount, but the content of ethanol or n-propanol is actually set to a high concentration of 40 to 55% by weight. (See Examples 1 to 3 of Patent Document 1). Thus, when the alcohol content in the pesticide is high, there are problems such as an irritating odor derived from alcohols, the danger of the pesticide itself is high, and the cost is also high. Therefore, there is a demand for a pesticide that can quickly and effectively eliminate gastropods even when the alcohol content is reduced, and that does not cause significant phytotoxicity to agricultural and horticultural crops.

JP-A-10-259103

  An object of the present invention is to provide a gastropod pesticide that can quickly and effectively control gastropods without causing a great phytotoxicity to agricultural and horticultural crops.

As means for solving the problems,
[Claim 1] Based on water , at least one monovalent saturated aliphatic alcohol having 5 to 30% by mass and having 1 to 5 carbon atoms and 0.1 to 10.0% by mass Ru gastropods pesticides der characterized by containing the following eucalyptus oil.

  Since the gastropod pesticide according to the present invention is based on water and contains a specific amount of eucalyptus oil, it can effectively and quickly control gastropods even if the content of saturated aliphatic alcohol is reduced. There is very little risk of phytotoxicity to agricultural and horticultural crops even if they come into contact with agricultural and horticultural crops. Therefore, according to the present invention, it is possible to provide a gastropod extermination agent capable of quickly and effectively eliminating gastropods without causing significant phytotoxicity to agricultural and horticultural crops.

  The gastropod pesticide according to the present invention is based on water and comprises a saturated aliphatic alcohol and eucalyptus oil.

  The saturated aliphatic alcohol contained in the gastropod pesticide according to the present invention is basically not particularly limited, but is preferably a monovalent saturated aliphatic alcohol having 1 to 5 carbon atoms. Is more preferable. That is, the saturated aliphatic alcohol is more preferably a monovalent saturated aliphatic alcohol having 1 to 5 carbon atoms in that it can effectively and quickly remove gastropods. Examples thereof include methyl alcohol, ethyl alcohol, n-propyl alcohol, i-propyl alcohol, n-butyl alcohol, i-butyl alcohol, sec-butyl alcohol and the like. Among these, it is more preferable that it is a monovalent saturated aliphatic alcohol having 1 to 3 carbon atoms, and it is possible to effectively and promptly remove gastropods even with a low content. Propyl alcohol and i-propyl alcohol are still more preferable, and i-propyl alcohol is particularly preferable in terms of high safety.

  Eucalyptus oil contained in the gastropod pesticide according to the present invention is an essential oil obtained by steam-distilling leaves of Eucalyptus globulus Labillardier or other related plants (Myrtaceae) (see 14th revised Japanese Pharmacopoeia) ). This eucalyptus oil usually contains about 70% or more of 1,8-cineole (1,8-cineole) as a main component, and also contains p-cymene, terpineol, cuminal, pinene and the like. Eucalyptus oil can be a safe and immediate gastropod control agent without reducing the control property to gastropods even if the content of saturated fatty alcohol contained in the gastropod control agent is reduced. Eucalyptus oil may be obtained by steam distillation as appropriate, or a commercially available product may be used.

  The gastropod pesticide according to this invention is based on water. That is, this gastropod pesticide is a water-based pesticide containing a saturated aliphatic alcohol and eucalyptus oil. Water can be used without particular limitation, such as tap water, well water, distilled water and the like.

  The saturated fatty alcohol contained in the gastropod pesticide according to the present invention is 5% by mass to 30% by mass with respect to the total mass of the gastropod pesticide. If the content of the saturated fatty alcohol is less than 5% by mass, gastropods may not be extinguished immediately. In the present invention, if the purpose is to quickly remove gastropods, the content of saturated aliphatic alcohol may exceed 30% by mass, but it solves problems such as pungent odors derived from alcohols. The content of the saturated aliphatic alcohol is adjusted to 30% by mass or less in that the risk reduction and cost reduction of the pesticide itself can be sufficiently achieved. The content of the saturated aliphatic alcohol is preferably 10% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 20% by mass or less, in that gastropods can be more rapidly and effectively controlled. It is particularly preferable that the content is 20% by mass or more and 30% by mass or less from the viewpoint that gastropods can be controlled more quickly and effectively even if the amount of the gastropod pesticide is reduced.

  Eucalyptus oil contained in the gastropod pesticide according to the present invention is 0.1% by mass or more and 10.0% by mass or less based on the total mass of the gastropod pesticide. If the content of eucalyptus oil is less than 0.1% by mass, the effect of adding eucalyptus oil may not be sufficiently exerted, and gastropods may not be extinguished immediately. In the present invention, if the purpose is to quickly eliminate gastropods, the content of eucalyptus oil may exceed 10.0% by mass, but safety (phytotoxicity) for agricultural and horticultural crops and low cost The content of eucalyptus oil is adjusted to 10.0% by mass or less because provision of the preparation (cost reduction) can be achieved. The content of eucalyptus oil is a content that exhibits a synergistic gastropod extermination effect when used in combination with a saturated aliphatic alcohol. Specifically, even if the content of saturated aliphatic alcohol is reduced, the gastropod Is more preferably 0.1% by mass or more and 1.0% by mass or less in that it can be more rapidly and effectively removed.

  The water which is the base of the gastropod extermination agent according to the present invention is the main component of the gastropod extermination agent, and is preferably adjusted more than the content of each component contained in the gastropod extermination agent. Specifically, when the gastropod pesticide comprises a saturated aliphatic alcohol, eucalyptus oil, and water, the saturated fatty alcohol of the content, the eucalyptus oil of the content, and the balance, water, When the agent comprises a saturated fatty alcohol, eucalyptus oil, various additives, and water, the content of the saturated aliphatic alcohol, the content of eucalyptus oil, the desired amount of various additives, and the balance from water Become.

  In addition to the saturated fatty alcohol and eucalyptus oil, the gastropod pesticide according to the present invention may contain an adjuvant, if desired, in order to improve the adhesiveness of the drug, maintain the efficacy or enhance the efficacy. Good. Examples of the auxiliary agent include solid diluents, solvents, fixing agents, stabilizers, propellants, synergists and the like used for preparing solid agents such as surfactants, powders or granules.

  In the gastropod pesticide according to the present invention, a surfactant is preferably used to uniformly and sufficiently mix water, saturated aliphatic alcohol, and eucalyptus oil. Examples of the surfactant contained in the gastropod pesticide include anionic surfactants, cationic surfactants and nonionic surfactants. Among these, safety against horticultural crops (phytotoxicity) Nonionic surfactants are preferred from the standpoint of excellent compatibility between saturated fatty alcohol and eucalyptus oil. Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polypropylene alkyl ether, polyoxyethylene nonylphenyl ether, and the like.

  The gastropod pesticide according to the present invention is produced by mechanically mixing saturated fatty alcohol and eucalyptus oil with water. There is no restriction | limiting in a mixing means, Mixing processing is performed using mixers, such as a container rotation type mixer, a mechanical stirring type mixer, and a fluid stirring type mixer.

  The gastropod pesticide according to the present invention can be used as it is as a solution obtained by mixing a saturated fatty alcohol, eucalyptus oil and water. This gastropod extermination agent may be prepared in any dosage form. For example, in addition to the liquid agent, emulsified particles of flowable (FL), microemulsion (ME), gastropod extermination agent are added to water by a known production method. Examples include a dispersed dosage form (emulsion oil in water (EW)), an air sol formed by coexisting the liquid agent and a propellant, and the like.

  The gastropod control agent according to the present invention may be used by any method as long as the gastropod control agent prepared in the above-mentioned dosage form is brought into contact with the gastropod. For example, the gastropod control agent prepared as a liquid is sprayed onto the gastropod using a sprayer or the like. Examples include a method, a method of injecting a gastropod pesticide prepared in an aerosol to a gastropod using an injector or the like, a method of dropping a gastropod control agent prepared in various dosage forms into the gastropod, a method of using these in combination, and the like. . The contact amount of the gastropod extermination agent according to the present invention to the gastropod is appropriately adjusted depending on the number of gastropods, the stationary body length, the appearance location, the usage mode of the gastropod extermination agent, and the like. For example, when the gastropod pesticide according to the present invention is sprayed onto a gastropod having a stationary body length of 2 to 3 cm, the volume is 0.5 mL or more.

  Examples of gastropods exterminated by the gastropod pesticide according to the present invention include slugs and snails.

  Since the gastropod pesticide according to the present invention is based on water and contains a specific amount of eucalyptus oil, even if the content of saturated aliphatic alcohol is reduced, gastropods can be effectively and immediately contacted, for example, contacting gastropods. It is possible to control within 3 minutes after the control with a control rate of almost 100%.

  Moreover, since the gastropod pesticide according to the present invention uses eucalyptus oil obtained from nature as one of the active ingredients, the toxicity to humans and pets is extremely low, and the gastropod pesticide is highly safe. Therefore, the gastropod extermination agent according to the present invention can be sprayed in large quantities and frequently even when a gastropod is found indoors, and can quickly and effectively exterminate gastropods that appear indoors as well as outdoors. . Therefore, the gastropod extermination agent according to the present invention is suitably used not only for outdoors but also for exterminating gastropods that have appeared indoors.

  Furthermore, since the gastropod pesticide according to the present invention uses eucalyptus oil obtained from nature as one of the active ingredients, the toxicity to agricultural and horticultural crops is low, and there is very little risk of phytotoxicity to agricultural and horticultural crops and the like. Therefore, the gastropod pesticide according to the present invention is effective not only for gastropods that appear in places where agricultural and horticultural crops etc. do not live on the ground, but also for gastropods that appear in and near agricultural and horticultural crops. It is preferably used for extermination. Agricultural and horticultural crops and the like that can be sprayed with the gastropod pesticide according to the present invention are not particularly limited. ), Himeno button (Nobatoceae), Petunia (Nasaceae), Pentas (Rubiaceae), Torenia (Lepidopteraceae), California Rose (Spisodes), Shibazakura (Namidaceae), Salvia (Lamiaceae), Pautraca (Sverhiyuyu) ), Lantana (Plumaceae), Pansy (Violetaceae), Tulip (Lilyaceae), Snapdragon (Lepidoptera), Begonia (Pleurotusaceae), Stock (Brassicaceae), Sweet pea (Leguminosae), Forget-me-not (Plumaceae) And the like.

  Therefore, the gastropod pesticide according to the present invention can quickly combat gastropods without causing enormous phytotoxicity to agricultural and horticultural crops.

  The holding jig in the present invention is not limited to the above-described embodiments, and various modifications can be made as long as the object of the present invention can be achieved.

  Next, the present invention will be described with reference to examples and comparative examples, but the present invention is of course not limited to the following examples and comparative examples.

(Examples 1-6 and Comparative Examples 1-9)
Saturated aliphatic alcohols with the contents shown in Table 1, Eucalyptus oil with the contents shown in Table 1 (manufactured by Kanto Chemical Co., Ltd.), and 0.01% by mass of a surfactant (trade name “Naroacty CL50”, Sanyo) Chemicals Co., Ltd.) and the remaining tap water were mixed with a magnetic stirrer to prepare drugs A to M. In Table 1, i-PrOH represents i-propyl alcohol (Chinese Oil Co., Ltd.), and n-PrOH represents n-propyl alcohol (Chinese Oil Co., Ltd.).

  In addition, a drug N containing a fenitrothion, carbaryl and allethrin (trade name “namejigoku S”, manufactured by Rainbow Pharmaceutical Co., Ltd.) and a drug O containing etofenprox and a terpenoid (trade name “namekuji dry”, earth Pharmaceutical Co., Ltd.) was prepared.

  The obtained medicines A to M and the prepared medicines N and O were placed in a glass petri dish having a diameter of 9 cm using a small hand spray, and 10 perished slugs (stationary body length 2 to 3 cm) per 10 petri dishes. The spray amount shown in 2 was sprayed uniformly over the entire petri dish at a distance of about 5 cm. The number of abnormal deaths of Chaukoura slug after a predetermined time after spraying was counted, and the extermination rate (%) was calculated. The results are shown in Table 2.

  As is apparent from Table 2, compared to the extermination rate of Chaukoura slugs in drugs that do not contain Eucalyptus oil (Comparative Examples 1 to 7), Chakoura slugs in drugs that contain Eucalyptus oil (Examples 1 to 6) The extermination rate was 100%, and in any of the Examples, 100% Chakoura slug extermination rate, which could not be achieved by the conventional extermination agent (Comparative Examples 1 to 9), could be achieved.

After spraying 100 mL per ward to the plants (1 ward, 3 strains) shown below with the obtained drugs A to C and J to L using a small hand spray, the plants are observed daily for 5 days. It was confirmed whether or not phytotoxicity occurred in these plants. As a result, in the following plants, there was no plant in which phytotoxicity occurred.
[Test plants] Impatiens (Dipteraaceae), Zinnia (Asteraceae), Nadesico (Dipteraaceae), Pelargonium (Olysaceae), Hymeno button (Nanophyceae), Petunia (Nulaceae), Pentas (Rubiaceae), Torenia (Lepidoptera: Tephritaceae), California Rose (Tephritaceae), Shibazakura (Temperaceae), Salvia (Tephritaceae), Porturaca (Pursaceae), Lantana (Plumaceae), Pansy (Violetae), Tulip (Lilyaceae), Snapdragon (Lepidoptera), Begonia (Brassicaceae), Stock (Brassicaceae), Sweet pea (Leguminosae), and Forget-me-not (Lepidoptera)

Claims (1)

At least one monovalent saturated aliphatic alcohol having a carbon number of 1 to 5 and a eucalyptus oil of 0.1 to 10.0% by weight based on water; A gastropod extermination agent, comprising: