JP3124896U - Beetle damage prevention device - Google Patents

Abstract

[Problem] To provide a beetle insect damage prevention device capable of preventing a tree from withering due to an attack of a beetle without using an insecticide.
A support 20 made of a wire net that surrounds a root portion 54 of a tree 50 and is placed on the ground at a predetermined distance from the root portion 54, and a capture net 30 made of fiber that is entangled with a leg of a longhorn beetle, , The upper end 34 of the capture net 30 is wound around and fixed to the trunk 52 above the root portion 54, and the capture net 30 is covered from above the support 20 to form the capture net. The lower end 36 of 30 is grounded to the ground outside the support 20.
[Selection] Figure 1

Description

  The present invention relates to a long-horned beetle damage prevention device that prevents the root part of a tree trunk exposed on the ground from being damaged by longhorn beetles.

There are about 1000 species of longhorn beetles present in Japan, of which about 140 are classified as pests that cause damage to trees. The longhorn beetle occurs once a year or once every two years, adults hurt the trunk of the tree and lay eggs, and hatched larvae grow for 1 to 2 years while feeding on the woody part.
When the longhorn beetle damages a tree branch or trunk, the tree vigor caused by the damage is significantly reduced. If a tree branch is damaged by damage, the branch will die, and if the trunk is damaged by damage, the tree itself will die. Even if the trees do not die, they may suffer unexpected damage due to the trees breaking during strong winds.

Various insecticides have been used so far in order to prevent such damage by longhorn beetles. In home gardening and the like, for example, organophosphate insecticides containing fenitrothion (MEP) as an active ingredient are widely used (for example, see Patent Document 1).
JP 2000-63214 A

However, when spraying insecticides on trees, the effect of the insecticide on the surrounding environment must be considered. For this reason, there are not a few cases where the insecticide cannot be sprayed over and over again. In recent years, consumers have become more interested in pesticide-free and low-pesticide agricultural products, and there is an increasing demand for reducing the amount of insecticide sprayed on fruit trees such as citrus fruits, apples, peaches, peaches, loquats and figs.
Therefore, farmers who cultivate fruit trees control the longhorn beetle by capturing adult longhorn beetles that fly into the tree, or picking out the larvae that hatched in the trunk and branches of the tree with a wire or the like.

However, the control of longhorn beetles without using insecticides is a very time-consuming task. This is a very big problem in places where there are many trees that must be protected, such as orchards.
The present invention solves the above-mentioned problems, and the object of the present invention is to provide a beetle insect damage prevention device that can prevent trees from withering due to the damage of beetles without using an insecticide. is there.

  The present invention has the following configuration in order to solve the problem. The longhorn beetle insect damage prevention device according to claim 1 is a longhorn beetle damage prevention device that prevents a root portion of a tree trunk exposed on the ground from being hit by a longhorn beetle, and surrounds the periphery of the root portion, and A support body that is placed on the ground without coming into contact with the root portion, and a capture net made of a fiber net material that is entangled with the legs of the longhorn beetle, the support body corresponding to the height of the root portion. The trapping net has a winding fixing portion that winds and fixes the upper end of the trapping net around the trunk of the tree, and the upper end is more than the root portion by the winding fixing portion. The capture net wound and fixed around the upper trunk is covered from above the support placed on the ground so as to surround the root portion, and hangs down to the outside of the support and is grounded.

The periphery of the root part of the trunk of the tree is surrounded by the support. The support and the root portion do not contact each other, and a space is formed between the support and the root portion. Moreover, the winding fixing part of the capture net winds and fixes the upper end of the capture net around the trunk above the root part. Then, the capture net covers the support, and the capture net hangs down to the outside of the support and comes into contact with the ground.
The fibers forming the net of the capture net are thin fibers that can be entangled with the legs of the longhorn beetle.

  Since the root part is completely covered with the capture net, the longhorn beetles flying from other places must pass through the capture net to reach the root part. However, when the long-horned beetle tries to pass through the catching net, the catching net gets entangled with the long-horned beetle's leg, and the long-horned beetle cannot move and cannot reach the root part. Therefore, longhorn beetles flying from other places do not reach the root part, and the root part is damaged and cannot lay eggs. The longhorn beetle entangled in the capture net can be disposed of as it is.

It is possible that the longhorn beetle has already laid eggs on the root portion before installing the longhorn beetle damage prevention device and covering the periphery of the root portion with a capture net. In such a case, after installing the beetle insect damage prevention device, the beetle eggs hatch at the root portion to become larvae, and the larvae become adults. It is only this adult that is inside the catching net.
If the adults inside the capture net are male, there are no females laying eggs at the root inside the capture net. Therefore, no eggs are laid on the root. The longhorn beetle that harms the root is only one generation of this male, and the damage of the root part ends with a slight damage, and the tree does not die by the damage of the root part.

  In addition, when the adult that is inside the capture net is a female, even if this female lays eggs at the root part, there is no male inside the capture net. Therefore, eggs laid are not fertilized and larvae do not hatch at the root. The longhorn beetle that causes damage to the root part is only for the first generation of this female, and the damage to the root part ends with minor damage, and the root part does not cause the tree to die.

The trunk except for the root is not covered by the capture net. For this reason, longhorn beetles flying from other places may lay eggs by damaging trunks and branches other than the root. When the trunk or branch other than the root part is damaged by the longhorn beetle, the damaged part may be excised. New shoots sprouting from the excised area and trees will not die.
Since the support is only placed on the ground around the root part, if you lift the support by turning the bottom edge of the capture net and insert your hand from the bottom of the support part, it will be around the root part. Easily reach the ground. Therefore, operations such as stripping the weeds on the ground around the root portion can be easily performed.

A longhorn beetle damage prevention apparatus according to a second aspect is the longhorn beetle damage prevention apparatus according to the first aspect, wherein a side surface of the support is formed of a metal net material.
Since the side surface of the support is formed of a metal net, the support is well ventilated. Moreover, since the capture net | network is also formed with the net | network material made from a fiber, ventilation is good. Therefore, the rain and wind easily pass through the mesh of the support and the catch net, and the beetle insect damage prevention device is prevented from moving due to the wind and rain. The support can be prevented from coming into contact with the root portion, and a space can be left between the support and the root portion.
Since the support is prevented from coming into contact with the root portion, it is also prevented that the longhorn beetle damages the root portion and lays eggs through the gap of the trapping net hanging outside the support.

  Since it is an apparatus for preventing damage to longhorn beetles as described above, it is possible to prevent trees from withering due to the damage of longhorn beetles without using insecticides.

The best mode for carrying out the present invention will be described with reference to FIGS. 1 and 2. FIG.
FIG. 1 is a perspective view of a long-horned beetle damage prevention apparatus according to the present invention, and FIG. 2 is a longitudinal sectional view of the longhorn beetle damage prevention apparatus according to the present invention. In addition, in FIG. 1, illustration of each mesh | network of the metal net | network material 22 and the fiber net | network material 32 mentioned later is abbreviate | omitted. Further, in FIG. 2, only a part of each mesh of the metal net member 22 and the fiber net member 32 is shown.

The longhorn beetle damage prevention device 10 is formed of a support 20 and a capture net 30.
The support 20 is a cylindrical body. The cylindrical body forming the support body 20 is formed by overlapping both ends in the longitudinal direction of a strip-shaped elongated metal net member 22 so as to overlap each other. For example, the cylindrical body which comprises the support body 20 can be formed by connecting and connecting the both ends of the longitudinal direction of the metal net | network materials 22 using a wire.

The inner diameter of the cylindrical body constituting the support 20 can be adjusted by adjusting the length of the overlapping portion of both ends in the longitudinal direction of the metal net 22. The inner diameter of the cylindrical body forming the support 20 is adjusted according to the diameter of the root portion 54 of the trunk 52 of the tree 50 to be protected. For example, the inner diameter of the cylindrical body that forms the support 20 is adjusted to approximately three times the diameter of the root portion 54.
The height of the cylindrical body forming the support body 20 is adjusted to a height corresponding to the height of the root portion 54.
The upper and lower ends of the cylindrical body forming the support body 20 are covered with a vinyl edge 24 so that the edge portion of the metal net member 22 can be prevented from being caught by the capture net 30. Yes.

As the metal net member 22, for example, a commercially available turtle shell metal net can be used. Further, the vinyl edge 24 can be formed by, for example, a commercially available vinyl hose cut open in the longitudinal direction. If the cut portions of the vinyl hose are fitted to the upper end and the lower end of the cylindrical body that is the support body 20, the edge 24 is formed.
The capture net 30 is formed by a fiber net 32. The fibers forming the fiber net 32 are thin fibers that can be entangled with the legs of the longhorn beetle.

A string 38 is passed through the mesh of the upper end 34 of the capture net 30, and the upper end 34 of the capture net 30 can be wound around the trunk 52 of the tree 50 and fixed by the string 38. . This string 38 forms a winding fixing part.
The support body 20 having such a configuration is placed on the ground around the root portion 54 and surrounds the periphery of the root portion 54. The root portion 54 is located at the central portion of the support 20, and a space is formed between the support 20 and the root portion 54, and the support 20 is not in contact with the root portion 54.

A string 38 winds and fixes the upper end 34 of the capture net 30 around the trunk 52 above the root portion 54. A trapping net 30 having an upper end 34 wound around a trunk 52 of the tree 50 is fixed on the support 20 and hangs outside the support 20. The lower end 36 of the trapping net 30 that hangs outside the support 20 is in contact with the ground outside the support 20.
This embodiment is configured as described above, and the operation thereof will be described next.

  The periphery of the root portion 54 of the tree 50 is completely covered by the capture net 30 of the beetle insect damage prevention device 10. In order to reach the root portion 54, longhorn beetles flying from other places must pass through the capture net 30. However, when the long-horned beetle tries to pass through the catching net 30, the catching net 30 becomes entangled with the leg of the longhorn beetle, and the longhorn beetle cannot move and cannot reach the root portion 54. Therefore, longhorn beetles flying from other places do not reach the root portion 54, and the root portion 54 is damaged and cannot lay eggs. The longhorn beetle entangled with the capture net 30 may be disposed of together with the capture net 30.

It is possible that the longhorn beetle has already laid eggs on the root portion 54 before the catch net 30 completely covers the periphery of the root portion 54. In such a case, after the surroundings of the root portion 54 are completely covered by the capture net 30, the beetle eggs hatch at the root portion 54 to become larvae, and these larvae become adult worms. It is only this adult that is inside the catch net 30.
When the adult larvae grown inside the catch net 30 are male, there are no females laying eggs at the root portion 54 inside the catch net 30. Therefore, no eggs are laid on the root portion 54. The longhorn beetle that causes damage to the root portion 54 is only one generation of this male, and the feeding damage of the root portion 54 ends with slight damage, and the tree 50 does not die.

  In addition, when the adult that grew inside the capture net 30 is a female, even if this female lays eggs at the root portion 54, there is no male inside the capture net 30. Therefore, the eggs laid are not fertilized and the larvae do not hatch at the root portion 54. The longhorn beetle that causes damage to the root portion 54 is only for the first generation of this female. The feeding damage of the root portion 54 ends with a slight damage, and the tree 50 does not die.

The trunk 52 excluding the root portion 54 is not covered by the capture net 30. For this reason, the longhorn beetle flying from other places may damage the trunk 52 and branches other than the root portion 54 and lay eggs. When the trunk 52 or the branch other than the root portion 54 is damaged by the longhorn beetle, the portion that has been damaged may be cut off. New shoots sprouting from the excised site, and the tree 50 does not die.
If weeds grow on the ground around the root portion 54, the support 20 is lifted by turning the lower end 36 of the capture net 30, and a hand is inserted from below the support 20, so that Caring for the ground.

Both the support 20 made of the metal net material 22 and the capture net 30 made of the fiber net material 32 are well ventilated. For this reason, when it rains or wind blows, the rain wind easily passes through the meshes of the support 20 and the catch net 30, and the beetle insect damage prevention device 10 is prevented from moving due to the wind and rain. . The support 20 can be prevented from coming into contact with the root portion 54, and a space can be left between the support 20 and the root portion 54. The longhorn beetle cannot damage the root portion 54 through the gap between the support 20 and the capture net 30 to lay eggs.
Since it is the longhorn beetle damage prevention device 10 as described above, it is possible to prevent the tree 50 from withering due to the longevity of the longhorn beetle without using an insecticide.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is a perspective view of the longevity insect damage prevention apparatus based on this invention. It is a longitudinal cross-sectional view of the beetle insect damage prevention apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Beetle damage prevention device 20 Support body 22 Metal net material 24 Edge 30 Capture net 32 Fiber net material 34 Upper end of capture net 36 Lower end of capture net 38 String 50 Tree 52 Trunk 54 Root part

Claims (2)

It is a long-horned beetle damage prevention device that prevents the root part of the trunk of the tree exposed on the ground from hitting the longhorn beetle,
A support that surrounds the root portion and is placed on the ground without contacting the root portion;
A capture net made of a fiber netting material that entangles with the leg of a longhorn beetle,
The support has a height corresponding to the height of the root portion;
The capture net has a winding fixing part for winding and fixing the upper end of the capture net around the trunk of the tree,
The trapping net, which is fixed by winding the upper end around the trunk above the base portion by the winding fixing portion, covers the support body placed on the ground so as to surround the base portion. In addition, a longhorn beetle feeding damage prevention device, which hangs down outside the support and contacts the ground. The side surface of the said support body is formed with the metal net | network material, The longhorn beetle erosion prevention apparatus of Claim 1 characterized by the above-mentioned.

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