JPS59122405A - Control of gastropod - Google Patents

Abstract

PURPOSE:To control gastropoda such as slugs, snails, etc., by providing positions to repel invasion of gastropoda with a zone to place agglomerate of electrolytic salt and a zone to place agglomerate of highly water-absorbing high polymer powder in the vicinity of the zone of electrolytic salt. CONSTITUTION:Positions to repel invasion of gastropoda such as slugs, snails, Acusta despecta Gray, etc. are provided with a zone to place agglomerate of electrolytic salt and a zone to put agglomerate of highly water-absorbing high polymer powder, which gastropoda will reach in the outside of the zone of the electrolytic salt, to control gastropod. An alkali metal and tin chlorides show extremely high repelling effect as the electrolytic salt, it in a state of a saturated aqueous solution wherein the greater part of the powder of the electrolytic salt exists is applied to the zone, or it is treated with a water-soluble or water- insoluble high polymer as a binder into a pasty dispersion state and it is applied. A cellulosic, synthetic polymer, etc. are used as the highly water-absorbing high polymer, its powder is treated with the binder into agglomerate and applied to the zone.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides gastropods (
slugs, snails, snails, etc.).

Conventionally, gastropods have been controlled by two methods: simply repelling them with repellents and killing them with poison baits or contact poisons.

The present invention has discovered that an electrolyte salt is effective as a repellent for gastropods, and an object of the present invention is to use the electrolyte salt to repel the invasion of gastropods, and to control gastropods using insecticidal means in combination.

The structure of the present invention includes an area in which aggregates of electrolyte salt are directly or indirectly placed in a position where gastropods should not enter, and a highly water-absorbent polymer outside the area and adjacent to the area. It consists of providing an area in which aggregates of molecular powder are laid directly or indirectly. The outside of the area where the electrolyte salt aggregate is laid refers to the side from which gastropods are about to enter.

The electrolyte salts of the present invention include sodium, potassium, magnesium, calcium, and aluminum.

Single salts, double salts, or complex salts of iron, copper, zinc, tin, lead, ammonium groups, etc. can be used. The repellent effect of electrolyte salts on gastropods was discovered and confirmed by the following experiment.

That is, powder of electrolyte salts is dispersed in a toluene solution of natural comb to form a paste-like dispersion (the comb content is 70% by weight of the salts), and this is placed on a piece of cardboard, leaving a space of /J-0m square. Apply the paint with a brush to draw a frame 3 cm wide around it (dry weight: OθQg/I), let it dry, put two namekuno in the frame, and put many cucumber slices outside the frame. Leave it in the dark for 75 hours, observing it occasionally.
When both animals remained within the frame, the electrolyte was judged to have a repellent effect. When a frame is made of electrolyte salts that have a repellent effect, when a slug touches the frame, it shrinks its body, moves away from the frame, turns around, touches the frame again, and moves away, repeating this behavior until it never leaves the frame. If the slug has a particularly strong repellent effect, it will shrink its body as soon as it touches the frame, and will not be able to move away from the frame and stretch its body easily. Preliminary experiment I has shown that the repellent effect of electrolyte salts is more effective against snails and snails than against slugs. ”−
The electrolyte salts used in the experiment described above were I.lium chloride, sodium sulfate, thorium carbonate, tristorium phosphate, thorium silicate, sodium borate, sodium thiosulfate, sodium oleate, thorium polyacrylate,
Alkali metal single salts such as potassium chloride and λ potassium phosphate, alkali metal double salts such as potassium sodium to potassium tartrate, ammonium salts such as ammonium sulfate, ammonium carbonate, ammonium chloride, ammonium acetate, stannous chloride, and sulfuric chloride. tin salt, maquisium chloride, maquisium sulfate, macanesium acetate, calcium chloride,
Alkaline earth metal salts such as calcium nitrate, aluminum single and double salts such as aluminum sulfate, aluminum potassium sulfate (potassium alum), aluminum ammonium sulfate (ammonium alum), copper chloride,
Copper salts, zinc salts, lead salts, iron salts such as copper sulfate, zinc chloride, zinc sulfate, lead acetate, ferric chloride, and alkali complex salts such as sodium ethylenediaminetetraacetic acid, all of which are repelled by gastropods. N effects were found. Among them, atomized thorium, potassium chloride,
Alkali metal and tin chlorides such as stannous chloride and stannic chloride showed strong repellent effects. Other alkali metal salts,
Ammonium salts, aluminum salts, and iron salts also showed excellent effects.

Electrolyte salts are deposited as aggregates in the form of a coating at locations that obstruct the path of gastropods. If an aqueous solution of electrolyte salt is applied as is and dried, only a very thin film of aggregates will be obtained.
If you want to increase the thickness of the film, add water to the electrolyte salt powder to make a saturated aqueous solution in which most of the powder is present, and if you apply it as is and dry it, you will get aggregates that aggregate with each other while still in powder form. Electrolyte salt aggregates can also be obtained by binding electrolyte salt powders using a water-soluble or water-insoluble polymer as a binder. As these binders, polymers that are generally used in adhesives and pressure-sensitive adhesives can be used. Examples of water-soluble polymers include starch-1 synthetic thickeners and arabicum, and examples of water-insoluble polymers include natural or synthetic rubbers and synthetic resins such as vinyl acetate. A water-soluble polymer binder is made into an aqueous solution, or a water-insoluble polymer binder is made into a solution in an organic solvent, and electrolyte salt powder is added to the solution to form a paste-like dispersion. When it is applied to a desired location and dried, an aggregate of electrolyte salt using a polymer as a binder is obtained in the form of a coating film. The amount of the polymeric binder may be adjusted as appropriate so that the aggregate of the electrolyte salt does not collapse. Usually 5 for electrolyte salts
--20wt about 1% is sufficient. Aggregates of electrolyte salts are usually laid down in the form of strips, but the width of the strip must be at least wide enough for gastropods to climb over. When the width of the slug is extremely narrow, slugs keep their heads and tails on the ground and lift up in an arched manner to get over the slug's length. -2m less width, for example, about 3 feet. The amount of electrolyte salt to be laid does not need to be particularly specified, but in general, the solid content after drying is about 100 gg of 0θ. The amount laid below is expressed in terms of dry weight. When a water-insoluble polymer is used as the binder for the electrolyte salt, the binder is water resistant, so the aggregate of the electrolyte salt does not disintegrate even when exposed to rainwater, making it suitable for outdoor use. However, since the surface of the electrolyte salt is slightly eluted by rainwater, it is better to increase the amount of binder to /θ-30% by weight or more, and to increase the amount of laying agent to O0g θθIg/d or more. It is certain.

Super absorbent polymers include starch and cellulose.

Synthetic polymer superabsorbent resins are known and are used in powder form. The present invention attempts to kill insects by dehydrating gastropods that come into contact with the laid super absorbent polymer. Therefore, any highly absorbent polymer suitable for the purpose can be used. However, gastropods cannot be covered with superabsorbent polymer; they are degassed while crawling around the installation area, so if the water absorption rate of the polymer powder is low, it is necessary to widen the installation area, so it is not practical to kill insects efficiently. In order to increase the water absorption rate, it is best to use a polymer powder that has a high water absorption rate and a large total water absorption amount. Considering practical insecticidal efficiency, the water absorption capacity of polymer powder is measured and evaluated using the tea bag method, and the amount of water absorbed per gram of polymer powder after immersed in 09% saline solution for 3 minutes is 100%. It is preferable that there be more than 30 fences, and even better insecticidal efficiency can be obtained if there are 30 or more fences. The tea bag method is a water absorption measurement method in which a sample is sealed in a non-woven fabric bag, immersed in a liquid for a certain period of time, drained, and weighed. Below, the water absorption values are based on this measurement method.

In general, resins with high total water absorption also have a high initial water absorption rate.
In some cases, immersion for 3 minutes can reach almost the total amount of water absorbed, so the total amount of water absorbed is also a guideline. That is, 7g of super absorbent polymer
The insecticidal efficiency is improved when the total water absorption of 09% saline is 2M or more, preferably 30-77% or more. The total amount of water absorbed by pure water is about 70 times that of 09% saline solution, and this can also be used as a guide.

The superabsorbent polymer powder is formed into an aggregate bound by a water-soluble or water-insoluble binder, and is spread in a predetermined area in the form of a coating film.

As the binder, substances generally used for adhesives and pressure-sensitive adhesives can be used as they are. For example, examples of the water-soluble binder include starch-1 synthetic thickener, gum arabic, and the like, which are used in the form of an aqueous solution. Examples of water-insoluble binders include natural and synthetic rubbers and synthetic resins such as vinyl acetate, which are used either by being dissolved in an organic solvent or as a dispersion in which powder is dispersed in water. A solution of these binders dissolved in a solvent or a dispersion of the binder powder dispersed in water is prepared, and this is added to the superabsorbent polymer powder to form a dispersion. This is applied to a designated area using a brush, spatula, or knife caulk, and when it dries, a film-like aggregate of highly absorbent powder bound with a binder is laid out. The amount of solvent is adjusted so that the polymer powder dispersion becomes a paste-like material that is easy to work with.The amount of binder added should be such that the aggregates of the superabsorbent polymer do not break down. j- for super absorbent high molecular weight
It is about θ weight %. Even if superabsorbent polymer powder absorbs water, it will return to its original state when it dries, and its water absorption function will be completely restored. Therefore, if a water-insoluble polymer is used as a binder to form an aggregate, it will not be exposed to rainwater, etc. However, the aggregates do not disintegrate, and upon drying, the aggregates completely return to their original state, making them suitable for outdoor use. When a water-insoluble polymer is used as a binder in the form of a solution in an organic solvent, a polymer with high water solubility, such as sugar, is powdered and added and dispersed in an amount equivalent to about n% by weight based on the superabsorbent polymer. If left alone, it becomes highly absorbent.

Stir once so that the sugar powder is present in the polymer aggregates.

In this way, sugar has a high solubility, so when it comes into contact with the gastropod and absorbs water, it becomes a concentrated solution, which causes the liquid inside the gastropod to ooze out through osmotic pressure, assisting the water absorption action of the superabsorbent polymer and increasing the insecticidal effect. be able to. If the amount of superabsorbent polymer aggregate is too small, it will be difficult to manage the work to avoid defects during the coating process, and the area where it is laid may have to be expanded due to insufficient water absorption capacity. Usually, the dry weight is about θθ2g-0θ4g/d. The amount laid below is expressed in terms of dry weight.

The present invention obstructs the path of gastropods and lays aggregates of electrolyte salts, usually in the form of a strip, in locations where entry of gastropods should be avoided. A superabsorbent polymer aggregate is laid close to the outside (path side) of the laying zone and along the entire length thereof. It is desirable that there be as little space as possible between the two. Gastropods follow a path in the direction of food in areas covered with super absorbent polymers.
-, but it comes into contact with the electrolyte salt laying zone and changes direction. However, it turns towards the bait again, reaches the same feeding zone, and then leaves. As this action is repeated, the area where the superabsorbent polymer is laid becomes dehydrated and dies. Therefore,
Depending on the water absorption rate or amount of the superabsorbent polymer and the size of the installation area, whether the gastropods can leave the water absorption area or die before they can leave, that is, the kill rate of the gastropods is determined. Since gastropods are attracted in any direction, the width of this laying area (the length in the direction perpendicular to the electrolyte salt laying zone) does not need to be very wide. Food such as vegetables and fruits is placed in a circular area of electrolyte salt, and a superabsorbent polymer is placed concentrically with an appropriate width on the outside of the circle. By making it dark and observing after a certain period of time, you can understand the relationship between the width of the superabsorbent polymer and the killing rate.
This determines the laying width. On the other hand, if this water-absorbing area is not circular, its length (and the direction in which it absorbs the electrolyte salt layer) will be related to whether the gastropod can detach or not. This is done by laying a superabsorbent polymer at an appropriate length inside parallel strips of electrolyte salt, placing bait at one end, and releasing gastropods at the other end to darken the whole area. The relationship between the laying length of the superabsorbent polymer and the killing rate can be determined by whether the animal was able to pass through this passage or whether it died on the way. For superabsorbent polymers with different types and performance, the dimensions and shape of the installation area are determined based on such experimental data.

The aggregate of electrolyte salt and superabsorbent polymer may be laid directly on the position as needed, but it is necessary to lay it on the paper in advance.

Fabric, non-woven fabric, plastic sheet, or other similar sheets of the same effect are prepared by laying them next to each other in the form of a membrane, and then placing them in the required positions, or fixing them with double-sided adhesive paper, etc. for indirect protection. It can be laid down. It is convenient to make a long pest control sheet so that you can cut it to the required length and use it when needed. When creating a pest control sheet, it is preferable to aggregate the electrolyte salt and superabsorbent polymer with a water-insoluble binder. This is because a flexible binder such as rubber can be used, so long insect control sheets do not collapse into aggregates even when rolled or folded, making them easier to handle.Also, when an organic solvent is used, the This is because the drying time is fast and there is no warping or shrinkage even on hygroscopic flat plates.

Example/ 70% of styrene-butadiene rubber using a rubber roll
2θθ parts of →non-wet IM=/θOθ (trade name, see below) are kneaded into 0 parts to form a rolled sheet with a thickness of 06 m. On this sheet, apply a dispersion of Glauber's salt powder/gum arabic/water in a proportion of ///// in a frame shape of 3cm wide surrounding the 3θ binkaku space (amount to be applied: θθ/g).
/cII) L, dried. Nano 993 within this frame
When the slugs and 92 slugs were released and observed from time to time in a darkened environment, the slugs moved around within the frame for 6θ minutes to 9θ minutes, then stopped moving, and three hours later, all three slugs died. The snail stopped moving after only moving 3 degrees and died after 5 minutes. At the same time, a similar comparison was made using a styrene φ butadiene rubber sheet in which Sunwetsu IM-/θθθ was not kneaded, and 993 nano and λ snails moved around within the frame and remained alive even after 76 hours. . The slug that died after 3 hours had an initial weight of 2 guag, but after 3 hours it weighed /θJg
It had become. Sunwet ■M-/θθO is made of super absorbent resin powder (2θ-/Futamesh) made of starch acrylate manufactured by Sanyo Chemical Industries, Ltd., and the total water absorption is 10θθg/g of deionized water, θg/g of physiological saline /g
(After 3 minutes of immersion, water absorption is ♂θ-/θθ%).

Example Core Aqua Keep Gug S (trade name, see below)/Styrene-butadiene rubber latex (solid content<tS%)/Water/θ
A dispersion mixed at a ratio of θ part/cut part/3θθθ part was made into a corrugated board using a knife coater. On top of this
A dispersion of potassium/sodium tartrate powder/gum arabic/water mixed in a part ratio of 10θ/2θ//2θ
It was applied in a frame shape of 3 m wide surrounding a 06n square space and dried (the amount applied was θθθ−2 g/cd). Separately, a comparison sheet was made of cardboard paper similar to the above, on which Aqua Keep Gug S had been applied and dried, and a square frame was drawn in ink, and two slugs were placed in the frame of each sheet and left there , the amount of Aqua Keeping S dispersion laid is θθ02g
/lxl was moving around within the frame, but all of them died after 3 hours, and the Aqua Keep GS with a laying amount of 0θ/-θθQg/cd was a highly water-absorbent acrylic heavy duty manufactured by Tetsutsu Kagaku Kogyo Co., Ltd. It is a combined powder, and the total water absorption is about 0.0 g of pure water.
m17g, 09% saline gθ-Xttnl/g
(After 3 minutes of immersion, water absorption was ♂θ-70θ%).

Example 3 An aqueous dispersion of Aqua Keep 41-8, which is the same as in Example 2, was applied over the entire surface of the corrugated pole paper (amount θθ2 g/d) and dried, and then potassium tartrate and storium water, which was the same as in Example 2, was applied on top of it. The dispersion was applied to the spacing between the three inner teeth to form parallel lines with a certain width and a length of 2 and θ, and then dried. An appropriate amount of ripe persimmon slices was placed at one open end of the parallel line, and two Knucks were released at the other end, and the whole was left in the dark so that they could not get out of the parallel line path. The slug will be gone after 30 minutes! It stopped moving after one advance, and died seven hours later. Separately, a parallel path of potassium and strium tartrate was placed on uncoated cardboard paper, and a comparison was made under the same conditions.
I proceeded along the cm passage and left the passage in front.

Example 7 A rubber paste is prepared by dissolving 700 parts of natural rubber in 00 parts of Truf Fluoride. Rubber glue/Aqua Keep/θSH (product name, see below)/sugar mixed in the proportions of /Otsuθ//θθ//θ is used to club a dispersion using a knife coater!・
Apply on paper at /θ angle (amount applied: 00 g/d) L
, dry for 3θ minutes at room temperature.

Using a knife coater, apply a dispersion of the above rubber glue/potassium chloride powder mixed in a part ratio of /O θ//θθ in a frame shape in a 3-dimension width in contact with the application area of the Aqua Keep/θ8H ( Laying amount θθ g/d) L, 3θ at room temperature
Let dry for a minute. When I released 3 slugs into this, ・3
Both animals died within the time frame.

Aqua Keep/θS H is a highly water-absorbing acrylic polymer powder manufactured by Seitetsu Kagaku Kogyo Co., Ltd., and the total water absorption is θθ-/θθθme/g for pure water, 09% saline and θ-/
θθml! /g (3 minutes after immersion, the difference is θ-/θθ% water absorption).

Example J Comb glue is prepared by dissolving 700 parts of natural rubber in 0 θ parts of Toluef Fluoride. Ammonium carbonate powder/rubber glue/θθ
Apply the dispersion mixed with θ in a part ratio of θ to a width of 3 cm on a plywood board-F, leaving a space of a circle with a diameter/a (amount of application θθ g/d) L, and dry.

Place the bait inside this circle, and place the bait on the outside in contact with the outside of this circle.
A dispersion of /sugar/rubber paste mixed in a part ratio of /θθ//θ//Otsuθ is applied concentrically over a width /θm (amount of application θθg/d) L, and dried.

3θ slugs are released on the outside, the whole thing is covered with a transparent plastic box-like lid, and left in the dark.

After 30 minutes, all the Namekun were in the application area of Sunwet IM-30θ, but after 7 hours, 2! One of the animals died within the area, and j of the animals escaped to the outside of the area, resulting in a kill rate of approximately ♂θ%. When the coating width of Sunwet IM-3θθ was /J-CM, the killing rate was /θθ% after 7 hours.

IM-Jθ0 is made of starch polyacrylate manufactured by Sanyo Chemical Industries, Ltd. It is a mesh super water absorbent resin powder, and the total water absorption amount is 7θθg/g of deionized water + 65g/’g of physiological saline (water absorption of θ−/θθ% after 3 minutes of immersion).

In an example, a rubber paste was prepared by dissolving 700 parts of natural rubber in 0 θ parts of Toluef Fluoride. Rubber glue/Aqua Keep S/7g sugar
They are mixed at a part ratio of θ//θθ//θ to form a dispersion.

Separately, the rubber paste/stannous chloride powder is mixed in a part ratio of λθ0//θO to form a dispersion.

Aqua Keep Gug S on a long vinyl chloride sheet with a width of 73 mm
Apply the dispersion to the width / θ (amount of application. θ g / d),
In contact with this, a dispersion of stannous chloride is applied to a width of 3 cm (amount θθ' g/cd) and dried to obtain a pest control sheet. This required length was cut and the wrapping was fixed around the outer circumferential surface of a flowerpot in which chrysanthemums were planted, and samples without insect control sheets were lined up and placed outdoors as comparison samples. Seven weeks later, comparison materials showed that the chrysanthemums had been attacked by slugs and slugs. Is the one wrapped with pest control sea) above the area where Aqua Keep Gug S is installed? Kouskawamaimai 2
Ninety-three of the chrysanthemums were found dead due to dehydration, and no gastropods were found on the chrysanthemums and no feeding damage was observed.

In addition, even after 7 months, the repellent sheet retained its repellent and killing effect on gastropods that withstood irrigation and precipitation.

The present invention provides an area in which an aggregate of electrolyte salt is directly or indirectly laid in a remote location from which gastropods can enter, and an aggregate of superabsorbent polymer powder outside the area along and adjacent to the area. Depending on the configuration in which the area is provided with aggregates laid directly or indirectly, the following effects can be achieved.

Since the electrolyte salt and the superabsorbent polymer can be made into a water-soluble or liquid dispersion, they can be easily laid in any location and shape that should be avoided by one coat or the like. Electrolyte salts have the effect of repelling gastropods, thus blocking their path. Because we set up an area adjacent to it and on the outside (on the path side) where aggregates of superabsorbent polymer powder are laid, even if gastropods come into contact with electrolyte salt aggregates and change their course, they will not come into contact with superabsorbent polymers. The body becomes dehydrated and dies. Thus,
It is effective in controlling gastropods by preventing them from entering agricultural products and killing them without using chemicals that are harmful to the human body. When an electrolyte salt is combined with a water-insoluble polymer to form an aggregate, it is water resistant, and the super absorbent polymer absorbs water when exposed to rainwater outdoors, temporarily reducing the gastropod killing effect. Even if the electrolyte salt's repellent effect is maintained, gastropods can be prevented from entering, and when the superabsorbent polymer dries, it retains its repellent and killing effect before absorbing water. Furthermore, if a path is formed through aggregates of superabsorbent polymer powder sandwiched between aggregates of electrolyte salt, the gastropod will be guided along its course by the electrolyte salt and will escape using the superabsorbent polymer as it advances. When the electrolyte salt and superabsorbent polymer are made into an aggregate using a flexible binder, it is possible to provide a method of killing the dead by placing them next to each other in advance on a flexible sheet substrate. An additional effect is that the aggregates do not collapse even when a pest control sheet is created in the form of a belt and is deformed by bending, winding, etc., and a pest control sheet that is easy to handle and safe can be provided.

Patent applicant Tsukiboshi Kasei Co., Ltd. Procedural amendment February 6, 1980 Patent application No. 222720 of 1988 2 Title of invention Method for controlling gastropods 3 Relationship with the person making the amendment Patent applicant address 60 Hakusancho, Kurume City, Fukuoka Prefecture (830-9
1) Telephone (0942) 33-1111 Main representative name
Title (298) Tsukiboshi Kasei Co., Ltd. Specification, Claims Column 5, Amendment Contents Claims 1. An area where aggregates of electrolyte salt are laid directly or indirectly in a position where entry of gastropods should be avoided, and aggregates of superabsorbent polymer powder are placed directly or indirectly outside the area along and in the vicinity of the area. Method for controlling gastropods by providing an indirect laid area.

2. The gastropod according to claim 1, wherein aggregates of electrolyte salt and aggregates of superabsorbent polymer powder are indirectly laid through a sheet base in a position where entry of gastropods is to be avoided. Control methods.

3. Aggregates of electrolyte salts are made by combining electrolyte salt powders with water-insoluble polymers, and aggregates of superabsorbent polymer powders are made by combining superabsorbent polymer powders with water-insoluble polymers. A method for controlling gastropods according to claims 1 and 2.

41-

Claims (1)

[Scope of Claims] / An area in which electrolyte salt aggregates are directly or indirectly installed in a position where gastropods should be avoided; A method for controlling gastropods that includes an area directly or indirectly covered with aggregates of molecular powder. - The gastropod according to claim 1, wherein aggregates of electrolyte salt and aggregates of superabsorbent polymer powder are indirectly spread through a sheet base material in a position where entry of gastropods is to be avoided. How to control. Story 1 3 An aggregate of electrolyte salt is formed by bonding electrolyte salt powder with a water-insoluble polymer, and a pillow aggregate of superabsorbent polymer powder is formed by bonding a high-grade aqueous polymer powder with a water-insoluble polymer. A method for controlling gastropods according to claims 1 and 2, wherein the gastropods are combined.