JPH11225646A - Annular sustainedly releasing dispenser for pheromone and installing tool therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an annular sustainedly releasing dispenser for pheromone having a shape convenient for wrapping and carrying, easy to install and stably retaining the shape after installation, free from difficulties in treatment after use, and a tool capable of easily and quickly installing the dispenser at a high position such as fruit tree. SOLUTION: A synthetic pheromone is enclosed in this annular sustainedly releasing dispenser for pheromone 10, without damaging the dissipation properties of the synthetic pheromone, and plural semi-elastically deforming plastic slender pipes 2a and 2b are arranged, melt bonded and linked each other at the end 3, and the center part 4 are each separated and capable of forming an annular space by pulling them open. The installing tool for annular sustained releasing dispenser for pheromone has a rod installed with a wire having hooks detaching the pulled open annular sustained releasing dispenser for pheromone at the both ends, and the bottom of the wire is attached on the top of the rod.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclic sustained-release pheromone dispenser for dispersing synthetic pheromones into the air, and a method for producing the same, as well as a pheromone dispenser installation tool, in order to disturb pests by communication disturbance. It is.

[0002]

2. Description of the Related Art Pest control by communication disturbance is carried out by releasing a synthetic pheromone of a target pest into the air, disrupting communication between males and females, lowering the mating rate, and suppressing the birth of the next generation. . Therefore, the pheromone dispenser for emitting the synthetic pheromone is required to have the ability to stably emit the synthetic pheromone during the period of occurrence of the pest (2 to 6 months).

[0003] Pheromone dispensers that are already commercially available include a synthetic pheromone liquid sealed in a plastic container such as a tube type, a bag type, a bottle type, and a spiral tube type, and the synthetic pheromone that has diffused and permeated the walls of the container becomes vapor. And emits into the atmosphere. Among these pheromone dispensers, what is called a tube type is
Since a plastic tube (small tube) container is used, the period for releasing the synthetic pheromone vapor is long, and the release rate is uniform, the control effect is the best compared to other types.

[0004] When using a pheromone dispenser, the pheromone is installed so that the vapor of the synthetic pheromone is evenly dissipated in the plant group, and is stable for a long period without damaging or damaging the growth of the plant. It is necessary to keep the installation state.

Conventionally, a tube-type pheromone dispenser satisfying such requirements has been disclosed in Japanese Patent Publication No. Sho 61-61.
No. 16361, Japanese Patent Publication No. 2-63017,
Japanese Patent Application Laid-Open No. Sho 62-122801 discloses a tube in which metal wires such as aluminum are arranged side by side along a tube, and a tube in which a tube is bent in Japanese Utility Model Publication No. Sho 63-722. It has been disclosed.

[0006]

In a pheromone dispenser having a metal wire juxtaposed, a tube is bent together with the metal wire and has excellent shaping properties. Although it is easy to maintain the state after installation, the remaining metal wire after use becomes a problem. The pheromone dispenser formed by bending the tube itself or forming it into a ring shape is not only extremely costly to mold, but also bends over a long period of time due to the resilience of plastic and drops on plant branches etc. Sometimes. Further, even if a large number of pheromone dispensers are arranged for packaging, the arrangement is poor and bulky, and the cost of packaging and distribution is high.

On the other hand, there is a demand for increasing the amount of synthetic pheromone radiated per unit and reducing the installation density per unit area in order to save the labor of installing a pheromone dispenser. The installation density can be reduced by increasing the capacity of the tube of the pheromone dispenser to increase the amount of the synthetic pheromone liquid enclosed. However, if the length is increased to increase the capacity of the tube, it becomes an obstacle to the installation work, and it becomes difficult to perform packaging and transportation. It is possible to increase the amount of synthetic pheromone liquid by increasing the diameter of the tube.However, in order to obtain the amount of synthetic pheromone that is radiated according to the amount enclosed, adjust the wall thickness of the tube to increase the diffusion evaporation rate. There is a need. For this reason, the forming process of the tube becomes difficult, and the flexibility of the tube is reduced to be difficult to bend, so that the installation work becomes difficult.

The present invention has been made to solve these problems, and has a shape convenient for packaging and transportation without impairing the radiation performance of a conventional tube-type pheromone dispenser. It is an object of the present invention to provide a sustained-release pheromone dispenser that maintains its state stably after installation and has no difficulties in treatment after use.

Further, since the gaseous sex pheromone released from the pheromone dispenser is heavier than the air and diffuses downward, the pheromone dispenser must be placed at a high place of the plant in order to make the sex pheromone float evenly in the space where the target pest inhabits. Need to be installed. Another object of the present invention is to provide a tool capable of easily and quickly installing a pheromone dispenser at a high place.

[0010]

Means for solving the above-mentioned problems A cyclic sustained-release pheromone dispenser to which the present invention is applied will be described below with reference to the drawings corresponding to the embodiments.

A cyclic slow release pheromone dispenser 10 according to the present invention shown in FIG. 1 has a synthetic pheromone liquid 1 sealed therein and is made of semi-elastically deformable plastic thin tubes 2a and 2a.
A plurality of b's are arranged, their end portions 3 are fused and connected to each other, and the central portion 4 (see FIG. 2B) can be opened independently of each other to form an annular space. It should be noted that three or more plastic thin tubes may be arranged to form an annular sustained-release pheromone dispenser.

Another cyclic sustained release pheromone dispenser 10 of the present invention shown in FIG.
2a and 12b are connected to each other by a web 15 extending along the longitudinal direction thereof and are integrally formed of plastic, and a cut portion 14 is provided in a part of the web 15 for opening the plastic thin tube in the longitudinal direction. Pheromone solution 1 in each of
(See FIG. 6) is sealed, and both ends 13 of each of the plastic tubules 12a and 12b are sealed.

As shown in FIG. 8, the cut portion 14 of the annular sustained release pheromone dispenser 10 can be formed by forming a groove in the same direction as the longitudinal direction of the plastic thin tubes 12a and 12b.

Further, similarly, as shown in FIG. 9, the cut portion 14 can be formed by forming a perforation in the same direction as the longitudinal direction of the plastic thin tubes 12a and 12b. It should be noted that three or more plastic thin tubes may be arranged to form an annular sustained-release pheromone dispenser.

As shown in FIG. 3, in the method for producing the cyclic sustained release pheromone dispenser 10 of the present invention, a plurality of long plastic thin tubes 2a and 2b sucking a synthetic pheromone liquid are arranged side by side and heated at a constant pitch. Pressure welding is performed, and the heating / pressing welding portion 6 is cut. Specifically, after the plastic thin tubes 2a and 2b are mechanically pulled out at a constant pitch, the plastic thin tubes 2a and 2b are pressurized at a pressure of 0.1 to 0.2 MPa to obtain a pressure of 28 to 32 μm.
Is oscillated for 200 to 600 mmsec by the ultrasonic oscillator, and is fused and cut.

In this manufacturing method, as shown in FIG. 4, a plastic material 7 of the same quality as the plastic thin tubes 2a and 2b is used.
Then, the heat and pressure fusion may be performed with the heat and pressure fusion portion 6 interposed therebetween.

As shown in FIG. 7, another method of manufacturing the cyclic sustained-release pheromone dispenser 10 of the present invention includes a plurality of cored holes 21 and 22 and the plurality of cored holes 21 and 2.
The plastic is extruded through a die 25 provided with a slit 23 connecting the plurality of plastic tubes 12a and 12b connected by a web 15 formed by the slit 23, and then continuously formed.
Is provided with a cutout 14 in the same direction as the longitudinal direction of the plastic thin tubes 12a and 12b, and the synthetic pheromone liquid 1 (see FIG. 6) is sealed in each of the plurality of plastic thin tubes 12a and 12b. It is characterized in that the ends 13 of the capillaries 12a and 12b are sealed.

Plastic capillaries 2a and 2b, 12a
And 12b, as the material of the web 15, for example, low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, polyvinyl acetate, Polyvinyl chloride resin, polystyrene, polyamide resin, polymethyl methacrylate, polycarbonate, polyvinyl alcohol, polyvinylidene chloride, polybutylene, methyl methacrylate-styrene copolymer, methyl pentene resin, ionomer, polyacetal, cellulose acetate, cellulose acetate butyrate, Examples include thermoplastics of polyvinylidene fluoride and silicon resin. Also, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, fumaric acid and at least one dicarboxylic acid selected from maleic acid, ethylene glycol, propylene glycol, butanediol, pentanediol, Hexanediol, octanediol, polycondensate with at least one polyol selected from decanediol or lactic acid, hydroxyvaleric acid, at least one condensation polymer selected from hydroxycaproic acid and hydroxycapric acid, Alternatively, an aliphatic polyester-based thermoplastic resin of polycaprolactone can also be used. The plastic material 7 sandwiching the heat-pressed and fused portion 6 is made of the same material as that used for the plastic thin tube among these plastic materials, so that the fusion is completed. To these plastics, lubricants, plasticizers, stabilizers, pigments and fillers may be added to improve the processability.

The inner diameter is 0.4 to 2 mm, more preferably 0.6 to 1.6 mm, and the wall thickness is 0.2 to 0.2 mm by continuous processing such as extrusion molding of the plastic material.
A long plastic thin tube of 1.5 mm, more preferably 0.3 to 0.8 mm is molded. Plastic tubing 2
A thin tube having an inner diameter of a and 2b, 12a and 12b smaller than this range is difficult to form, and it is not easy to suck the synthetic pheromone liquid into the tube. On the other hand, a thin tube having an inner diameter larger than this range can absorb a large amount of synthetic pheromone solution, but in consideration of the amount of synthetic pheromone necessary for communication disruption and the installation density of the cyclic sustained release pheromone dispenser. Excess volume results in wasted synthetic pheromone solution. The wall thickness of the plastic capillaries 2a and 2b, 12a and 12b, together with the choice of plastic material, affects the rate of diffusion and evaporation of the synthetic pheromone. If the wall thickness is smaller than the above range, it is extremely difficult to form a thin tube. If the wall thickness is larger than the above range, the rate of diffusion and evaporation of the synthetic pheromone becomes too slow, the emission is suppressed too much, and it is difficult to form a thin tube.

Cyclic sustained release pheromone dispenser 10
Has an effective length L of 100 to 500 mm, and 100 to 40 mm.
The one with 0 mm is more preferable. Below this range, the diameter of the ring formed by pulling open the central portions 4 and 16 is too small to make it difficult to pass through the branches of plants, and above this range, a cyclic sustained release pheromone dispenser is usually used. For a plant cultivated in a field, it is too long to transport and becomes practically ineffective.

Cyclic sustained release pheromone dispenser 10
The length of the fused portion of the end portions 3 and 13 is 2 to 15 m
m, and particularly preferably 3 to 10 mm. If it is less than this range, the fusion becomes insufficient and the two plastic thin tubes 2a and 2b or the two plastic thin tubes 12a
In some cases, the cyclic sustained release pheromone dispenser 10 in which the pheromone dispenser 10 and 12b are separated and passed through a plant branch or the like may fall. When the length is more than the above range, the length is longer than necessary from the viewpoint of fusion, and the whole length becomes too long, and it becomes difficult to carry the material. As shown in FIG. 4, the end portions 3 and 13 of the heat-pressurized and fused portion sandwiched by the plastic material 7 of the same quality as the plastic thin tubes 2a and 2b with the heat-pressed and fused portion 6 interposed therebetween are strong. It becomes something.

The web 15 for connecting the plastic tubes 12a and 12b shown in FIG. 7 has a thickness of 1/2 to 1/20 times the outer diameter of the plastic tube, especially 1/4.
The width is preferably 2 to 1/10 times, and the width is also 2 to 1/5 times the outer diameter of the plastic tubule, particularly preferably 1 to 1/4 times. If the thickness is too large, the surface area of the outer periphery of the plastic tubules 12a and 12b that comes into contact with the atmosphere is relatively reduced, the amount of the synthetic pheromone radiated is reduced, and the economy is poor. If it is too thin,
The disadvantage is that the plastic tubes are separated from each other and do not form an annular shape. On the other hand, if the width of the web 15 is too large, it is not only useless but also it is difficult to perform the installation work. If the width is too small, it becomes difficult to cut a groove for forming the cutout 14 and to make a perforation.

As shown in FIG. 12, the annular sustained release pheromone dispenser installation tool 37 of the present invention has hooks 32 at both upper ends for detaching the opened annular sustained release pheromone dispenser 10 (see FIG. 13). The lower end 38 of the wire is attached to the tip of the rod 33.

Preferably, the wire is bent in a Y-shape and connected to the bar 33. The shape of the hook 32 is preferably spiral, U-shaped or V-shaped.

It is preferable that the wire 31 and the hook 32 are made of a material having appropriate elasticity, resilience, and repulsion. Specifically, it is selected from a piano wire, a synthetic resin wire, a composite wire of a synthetic resin and a metal wire, and a metal wire having the above performance. The lower end 38 of the wire is attached to a suitable length of SUS, synthetic resin, fiber reinforced plastic, metal pipe or bamboo or wooden rod 33. The rod 33 may be connected to an extendable extension rod 34 according to the height of the plant to be controlled.

It should be noted that the bending point 35 of the wire is
Length is 1/6 to 2/6 times the circumference of the ring pheromone dispenser to be installed, and the Y-shaped angle is 40 °
To 120 °, and particularly preferably in the range of 60 ° to 100 °. If the length or angle is out of the above range, the pheromone dispenser becomes difficult to spread in a ring shape, and it becomes difficult to install the pheromone dispenser on a plant.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 3, an annular sustained-release pheromone dispenser of the present invention is manufactured starting from a step of continuously forming an infinite-length plastic thin tube by continuous processing such as extrusion. . The plastic tubules 2 a and 2 b are cut into appropriate lengths, the synthetic pheromone liquid is sucked by a suction pump, and wound around a reel 5.
The two plastic tubes 2a and 2b are arranged side by side and pulled out continuously, and are heated by the heating press 8 to a desired length, that is, the effective length L of the pheromone dispenser.
(See FIG. 1), and the two are joined at that portion, and the inside of the tube is sealed. Next, the center of the thus-formed heat-pressed and fused portion 6 is cut with a cutter 9 to complete the annular sustained-release pheromone dispenser 10 shown in FIG.

Another cyclic sustained release pheromone dispenser of the present invention is made starting from the step of continuously forming integral plastic tubules 12a and 12b of infinite length, as shown in FIG. The molten plastic is extruded through a die 25 attached to a cylinder 27 of an extruder (not shown) to extrude parallel plastic thin tubes 12a and 12b having a web 15, and after cooling, the web 15 is cut into a groove 14 or a groove 14 by a blade 24. After making a perforated cut, wind it up with an infinite length that matches the molding process. It is cut into a suitable length, and the synthetic pheromone liquid 1 is sucked and filled into the plastic thin tubes 12a and 12b.
2b are sealed to a fixed size, and the sealed central position is cut off together with the web 15.

As a result, as shown in FIG. 5 as an overall view and FIG. 6 as a partially enlarged cross-sectional view thereof, the synthetic pheromone liquid 1 is sealed and the ends 13 are closed. Thus, an annular sustained-release pheromone dispenser 10 having a cut 15 provided in the center of a web 15 is completed.

The method of using the cyclic sustained release pheromone dispenser 10 shown in FIG. 2 will be described in more detail. The pheromone dispenser 10 is shown in FIG.
As shown in FIG. 2, two plastic thin tubes 2 a and 2 b in which the synthetic pheromone liquid 1 is sealed are arranged, and their end portions 3 (corresponding to the heat and pressure welding portion 6) are fused and connected to each other. The central parts 4 are independent of each other. Since the plastic thin tubes 2a and 2b are semi-elastically deformable materials, as shown in FIG. 2 (B), an annular space is created by pulling the central portion 4 outward as shown by the arrow. The plastic tubules 2a and 2b are hung on the hook 32 of the annular controlled release pheromone dispenser installation tool, and in the annular space, as shown in FIGS. 10 and 11, on the trunk, twig, or support of the cultivated plant 18 where the pests are to be controlled. Through this, the cyclic sustained release pheromone dispenser 10 is installed.

In this cyclic sustained release pheromone dispenser 10, the two plastic tubes 2a and 2b in which the synthetic pheromone liquid 1 is sealed are arranged side by side, so that the amount of diffused permeation of the synthetic pheromone is doubled. Therefore, the installation density is reduced by 1 / compared to the conventional pheromone dispenser.
2 and the time for the installation work can be shortened.

Cyclic sustained release pheromone dispenser 10
The expanded ring is trying to restore by elasticity, moderately controlling the twigs etc. that are passed through, without damaging the cultivated plants,
In addition, it can be deformed adaptively without hindering its growth, and can be stably installed over a long period of time.

In such an installed state, the plastic thin tubes 2a and 2b of the annular sustained release pheromone dispenser
The synthetic pheromone that diffuses and permeates through the walls of the garbage forms vapor and gradually diffuses into the atmosphere, increasing the concentration of sex pheromone in the atmosphere, disrupting communication between the male and female pests, and creating the next generation. Is suppressed.

The cyclic sustained release pheromone dispenser shown in FIG. 5 is used in the same manner as that shown in FIG.

Next, the annular controlled release pheromone dispenser installation device of the present invention will be described in detail with reference to FIGS.

As shown in FIG. 12, the annular sustained-release pheromone dispenser installation tool of the present invention comprises a metal wire 3
1 is bent in a Y-shape at a midpoint 35 and has hooks 32 at both upper ends of the wire to which a pheromone dispenser can be attached and detached. The lower end 38 of the wire is attached to the tip of the rod 33 by welding or bundling. The rod 33 may be connected to a telescopic extension rod 34.

The controlled release pheromone dispenser 10
The notch is opened to form an annular shape (see FIG. 2B), and FIG.
As shown in the figure, the cyclic sustained release pheromone dispenser 1
The two plastic tubes 2a and 2b of No. 0 are respectively hooked on the hooks 32 of the pheromone dispenser installation tool.
As shown in FIG. 14, the branch 36 is passed through the annular space of the pheromone dispenser 10. When the installation tool is pulled downward, the pheromone dispenser 10 is detached from the hook 32 and is installed at a predetermined position.

When the wire is bent in a Y-shape, it is possible to prevent the pheromone dispenser from coming off the hook 32 by touching the branches and leaves of the plant when the annular sustained release pheromone dispenser is passed through a tree branch.

By using the installation tool of the present invention, the cyclic sustained-release pheromone dispenser can be easily and quickly mounted at a high place, so that the cost required for controlling pests is significantly reduced.

Hereinafter, embodiments of the present invention will be described in detail, but the present invention is not limited thereto.

Examples 1 to 3 show examples of the cyclic sustained release pheromone dispenser shown in FIG. 2 to which the present invention is applied. Example 4 shows another example of the cyclic sustained release pheromone dispenser shown in FIG. 5 to which the present invention is applied. Comparative Examples 1 to 5 show examples of pheromone dispensers to which the present invention is not applied.

Example 1 A high-density polyethylene was extruded and had an inner diameter of 0.84 m.
m, a plastic thin tube 2 having a wall thickness of 0.35 mm was prepared. The synthetic pheromone solution 1 of the snake beetle was sucked into the plastic tubule 2. The two plastic thin tubes 2 were arranged side by side with a 4 mm long die 8 at a pitch of 204 mm, and were heated and fused by heating, and the fused portion 6 was cut to obtain an annular sustained release pheromone dispenser 10. The cyclic sustained release pheromone dispenser of Example 1 has an effective length L
= 200 mm, total length 204 mm. The amount of the enclosed synthetic pheromone solution is about 80 m per thin tube.
g, it is about 160 mg per one cyclic sustained-release pheromone dispenser with two thin tubes.

Example 2 Two plastic capillaries containing a synthetic pheromone solution were
An annular sustained-release pheromone dispenser was obtained in the same manner as in Example 1, except that fusion was performed by hot-pressing with a mold having a length of 8 mm at a pitch of 08 mm and fusing. The cyclic sustained release pheromone dispenser of Example 2 is the same as the cyclic sustained release pheromone dispenser of Example 1 except that the length of the fused portion at the end is 4 mm and the total length is 208 m. .

Example 3 Similarly, the length of the fused portion at the end was 10 mm, and the total length was 220 m.
Except for m, the same cyclic sustained release pheromone dispenser as in Example 1 was obtained.

Comparative Example 1 Two plastic tubules containing a synthetic pheromone solution were
An annular sustained-release pheromone dispenser was obtained in the same manner as in Example 1, except that the mixture was heat-pressed and fused with a mold having a length of 1 mm at a pitch of 01 mm. The cyclic pheromone dispenser of Comparative Example 1 is the same as the cyclic sustained release pheromone dispenser of Example 1 except that the length of the fused portion at the end is 0.5 mm and the total length is 201 mm.

Comparative Example 2 Similarly, the length of the fused portion at the end was 1 mm, and the total length was 202 mm.
The same cyclic sustained release pheromone dispenser as in Example 1 was obtained except that

Comparative Example 3 Similarly, the length of the fused portion at the end was 20 mm, and the total length was 240 m.
Except for m, the same cyclic sustained release pheromone dispenser as in Example 1 was obtained.

Comparative Example 4 An inner diameter of 0.8 was obtained by extrusion molding of high-density polyethylene.
A tube was prepared in which aluminum wires were juxtaposed adjacent to a plastic tube having a thickness of 4 mm and a wall thickness of 0.35 mm. The synthetic pheromone liquid of the snake beetle was sucked into the plastic tubule, fused by hot pressing with a mold having a length of 8 mm at a pitch of 208 mm, and the fused portion was cut to obtain a pheromone dispenser. The pheromone dispenser of Comparative Example 4 has an effective length L = 200 mm, a length of the fused portion at the end of 4 mm, and a total length of 208 mm. The amount of the enclosed synthetic pheromone solution is about 80 mg.

Eight apple orchards of 1 ha with similar conditions were secured as experimental fields. The cyclic sustained-release pheromone dispensers of Examples 1 to 3 and Comparative Examples 1 to 3 were placed on six of them at a height of 2.5 to 3.0 m above the ground.
0 pcs / ha, 500 pcs / ha in total, 750 pcs / h
a was arranged evenly. For installation at a high place, the installation tool of the present invention was used. In another field, the pheromone dispenser of Comparative Example 4 was placed at a height of 2.5 to 3.0 m above the ground.
0 lines / ha and 1000 lines / ha as per eye, a total of 1500 lines / ha, were evenly arranged. For installation at a high place, the installation tool of the present invention was used. Further, no pheromone dispenser was installed in the remaining one field for comparison. Comparative Example 4
Only the pheromone dispenser of Example 1 has the same amount of synthetic pheromone liquid as the cyclic pheromone dispenser 1 of another example.
The installation density was doubled in order to make the emission amount of the synthetic pheromone the same as half that of 0.

In the installation work of the cyclic sustained release pheromone dispensers of Examples 1 to 3 and Comparative Examples 1 to 3, the central part of the cyclic sustained release pheromone dispenser was expanded to form a ring, and as shown in FIG. It was performed by passing a ring through a tree branch. The pheromone dispenser of Comparative Example 4 was installed by applying a pheromone dispenser bent in a substantially inverted U-shape to an apple tree branch and twisting it once.

Two months after the installation of the pheromone dispenser, the drop rate of the dispenser and the damage rate of the beetles were examined in each field. The damage rate is obtained by randomly selecting 1,000 leaves from each field and expressing the number of leaves in which the damage by the snail was observed in%. Table 1 shows the results. In addition, the time required to install the pheromone dispenser is described.

[0052]

[Table 1]

As is clear from Table 1, Example 1 (the length of the fused portion at the end is 2 mm), Example 2 (the fused portion is also 4 mm), Example 3 (the fused portion is also 10 mm), and a comparison were made. Example 3 (similarly fused portion 20 mm) and Comparative Example 4
No pheromone dispenser (with thin aluminum wires) fell after installation. The pheromone dispensers of Example 1, Example 2, Example 3, Comparative Example 3 and Comparative Example 4 were excellent in controlling effect (small damage rate). The cyclic sustained release pheromone dispensers of Examples 1 to 3 and Comparative Examples 1 to 3 have a larger amount of synthetic pheromone liquid than Comparative Example 4 and have a smaller number of installations, so that the installation time is shortened. The annular sustained-release pheromone dispenser of Comparative Example 3 had a large fusion portion of 20 mm, so that when it was taken out of a bundle or bag, this portion was difficult to take out, and was attached to the annular sustained-release pheromone dispenser installation tool. Is not good,
The installation time was longer than in the example.

Example 4 A high-density polyethylene was extruded to a thickness of 0.25 m.
Two plastic tubes 12a and 12b each having an inner diameter of 1.00 mm and a wall thickness of 0.5 mm were integrally connected by a web 15 having a width of 1.5 mm and a width of 1.5 mm. When the plastic thin tubes 12a and 12b were wound by a winder, a perforated rotary blade 24 was pressed against the web 15, and the web 15 was perforated. After inhaling the synthetic pheromone of the beetle into each of the plastic tubules 12a and 12b, the plastic tubing 12
a and 12b were pressed at an interval of 20 cm, sealed by ultrasonic sealing, and the sealed portion was cut to obtain
The cyclic sustained release pheromone dispenser 10 of the present invention having a total length of 20 cm was obtained. The cyclic sustained release pheromone dispenser 10 was used for 1 ha at an installation density of 150 tubes / 10 a.
In the apple orchard. Installation work is web 1
The perforation 14 of No. 5 was torn to make the cyclic sustained release pheromone dispenser 10 circular, and this was performed by passing the ring through a branch of an apple tree as shown in FIG.

Comparative Example 5 For comparison with Example 4, the inner diameter was 1.00 mm, and the wall thickness was 0.1 mm.
A 5 mm plastic tubing and an aluminum wire were placed side by side with the plastic tubing, and high-density polyethylene was extruded to produce a tube. A conventional pheromone dispenser with a total length of 20 cm was obtained in which the synthetic pheromone of Coleoptera was sucked into this tube. In this conventional pheromone dispenser, the amount of the synthetic pheromone enclosed is half that of the cyclic sustained release pheromone dispenser 10 of the present invention, so that the pheromone was evenly installed in an apple orchard of 1 ha at a density of 300 / 10a. . Installation work
The test was performed by applying a pheromone dispenser bent in a substantially inverted U-shape to an apple tree branch and twisting it once.

As a result, the cyclic sustained-release pheromone dispenser 10 of the present invention shown in Example 4 had an installation density of 1 compared with the conventional pheromone dispenser shown in Comparative Example 5.
/ 2 but two plastic tubules 12a and 1
Since the amount of the synthetic pheromone contained was 2 times as large as that of Comparative Example 5, the damage rate showing the control effect of Example 4 was 1.4 to 1.6%, which is equivalent to Comparative Example 5. Since the cyclic pheromone dispenser 10 of Example 4 has a small number of installations and is easy to install, the operation is completed in about half or less of the installation of the pheromone dispenser of Comparative Example 5.

[0057]

As described above, the cyclic sustained-release pheromone dispenser of the present invention exhibits a high control effect, not only is easy to install, but also keeps the installation state stable for a long period of time. It does not damage existing trees. Furthermore, since it has a straight shape that is convenient for packaging and transportation, and no metal wire or the like is used, collection work is not required. In addition, according to the production method of the present invention, a homogeneous sustained-release cyclic pheromone dispenser is continuously produced in a homogeneous manner, which contributes to rationalization of production.

By using the device for installing a cyclic sustained release pheromone dispenser of the present invention, an annular sustained release pheromone dispenser can be easily and quickly placed on a high place such as a fruit tree without using a ladder, a ladder wheel or a dedicated hook. Since it can be installed, the time required for pest control can be greatly reduced, leading to a reduction in production costs for fruit trees and the like.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional perspective view of an embodiment of a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 2 is an overall front view of an embodiment of a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 3 is a perspective view showing a process of manufacturing a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 4 is an enlarged perspective view of the cyclic sustained release pheromone dispenser to which the present invention is applied, in the process of manufacturing the heat-pressed and fused portion.

FIG. 5 is an overall front view of another embodiment of a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 6 is a partially enlarged cross-sectional view of another embodiment of a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 7 is a partial perspective view of an example of forming a plastic thin tube of another annular sustained-release pheromone dispenser to which the present invention is applied.

FIG. 8 is a perspective view showing an embodiment of cuts (grooves) of a web of an annular sustained release pheromone dispenser to which the present invention is applied.

FIG. 9 is a perspective view showing an embodiment of a web cut (perforation) of a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 10 is a diagram showing an example of a use state of a cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 11 is a diagram showing another example of the use state of the cyclic sustained release pheromone dispenser to which the present invention is applied.

FIG. 12 is a perspective view showing a main part of an annular sustained release pheromone dispenser installation tool of the present invention.

FIG. 13 is a perspective view of a main part showing a state where a pheromone dispenser is attached to a hook portion of the annular sustained release pheromone dispenser installation tool of the present invention.

FIG. 14 is a diagram showing an example of a use state of the annular sustained-release pheromone dispenser installation tool to which the present invention is applied.

[Explanation of symbols]

1 is a synthetic pheromone liquid, 2a and 2b are plastic thin tubes, 3 is a fusion end, 4 is a central portion, 5 is a reel, 6 is a heat and pressure fusion portion, 7 is a plastic material, 8 is a heating press, 9 Is a cutter, 10 is an annular sustained-release pheromone dispenser, 12a and 12b are plastic tubules, 13 is a sealing end, 14 is a cut, 15 is a web, 16 is a central part, 18 is a plant, 21 and 22 are cored holes, 23 Is a slit, 24 is a blade, 25 is a die, 27 is a cylinder, 31 is a wire, 32 is a hook, 33 is a bar, 34 is an extension bar, 35
Is a bending point, 36 is a plant branch, 37 is a device for installing a cyclic sustained release pheromone dispenser, 38 is a lower end portion, and L is an effective length.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryuichi Left mouth 28, Nishifukushima, Oaza, Kushiro-mura, Nakakushiro-gun, Niigata Prefecture 1 Shin-Etsu Chemical Co., Ltd.

Claims (8)

[Claims] 1. A synthetic pheromone liquid is sealed, a plurality of plastic tubes which are semi-elastically deformed are arranged, their ends are fused and connected to each other, and the central portion is opened independently of each other to form a ring. A cyclic sustained-release pheromone dispenser characterized by forming a space. 2. A method according to claim 1, wherein a plurality of plastic thin tubes are connected to each other by a web extending in a longitudinal direction thereof and integrally formed of plastic, and a portion of the web is provided with a cutout for opening the plastic thin tube in a longitudinal direction. An annular sustained-release pheromone dispenser, wherein a synthetic pheromone solution is sealed in each of a plurality of plastic tubules, and the ends of each plastic tubule are blocked. 3. The plastic tube according to claim 2, wherein the cut portion is a groove in the same direction as the longitudinal direction of the plastic tubule.
3. The cyclic sustained release pheromone dispenser according to [1]. 4. The annular sustained release pheromone dispenser according to claim 2, wherein the cut portion is a perforation in the same direction as the longitudinal direction of the plastic tubule. 5. A plurality of long plastic thin tubes sucking a synthetic pheromone liquid are arranged side by side, and are heated and press-fused at a constant pitch. For producing a cyclic sustained release pheromone dispenser which can be connected to each other and the central portion can be pulled apart independently of each other. 6. An annular sustained release pheromone dispenser according to claim 5, wherein said heat and pressure fusion is carried out by sandwiching said heat and pressure fusion portion with a plastic material of the same quality as said plastic thin tube. Manufacturing method. 7. A plastic is extruded through a die provided with a plurality of cored holes and a slit connecting the plurality of cored holes, and a plurality of plastic thin tubes connected by a web formed by the slits are continuously formed. Subsequently, a cut is made in a part of the web in the same direction as the longitudinal direction of the plastic tubule, and a synthetic pheromone liquid is sealed in each of the plurality of plastic tubules, and then the end of each plastic tubule is closed. A method for producing a cyclic sustained release pheromone dispenser, comprising: 8. A lower end of a wire having hooks at both upper ends for attaching and detaching the annular sustained-release pheromone dispenser according to claim 1 or 2, which is opened, is attached to a tip of a rod. Pheromone dispenser installation tool.