JP2012147711A - Control method of boring insect pest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control boring insect pests without giving the environmental load while improving the working efficiency.SOLUTION: A control method of the boring insect pests includes a step (S12) for covering a damaged tree of a causal organism with an adhesive mesh sheet, and a step (S14) for covering the damaged tree covered with the adhesive sheet with a covering sheet to confine the boring insect pests, that are insect vectors of the causal organism, in the covering sheet to exterminate them.

Description

  The present invention relates to a method for controlling perforated pests.

  Conventionally, piercing pests have been controlled by fumigation treatment using a chemical pesticide (for example, see Patent Document 1 below) or a method using a biopesticide (for example, see Patent Document 2 below).

JP 2003-147096 A JP-A-2005-330184

  However, the former method for controlling piercing pests by fumigation uses chemical pesticides, and therefore requires attention to the environment and health, and the work efficiency is poor. In addition, the latter method for controlling perforated pests using biological pesticides is an environmentally-friendly drug, but its effects vary widely, and it is costly to procure biological pesticides. There was a need.

  The present invention has been made in view of such problems, and aims to improve work efficiency and to realize control of piercing pests without giving a load to the environment.

  The method for controlling perforated pests according to the present invention is a pathogen vector insect, a step of covering a pathogen-damaged tree with a mesh-like pressure-sensitive adhesive sheet, and covering the damaged tree covered with the pressure-sensitive adhesive sheet with a covering sheet. And confining the piercing pest in the covering sheet to kill it.

  ADVANTAGE OF THE INVENTION According to this invention, while aiming at the improvement of working efficiency, the control of a piercing pest can be implement | achieved, without giving a load to an environment.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the 1st Embodiment of this invention and shows an example of the relationship between the pine wood nematode which is a pathogen, and the pine wood beetle which is a piercing pest. It is a flowchart which shows an example of the control method of the piercing pest which concerns on the 1st Embodiment of this invention. It is a photograph which shows the 1st Embodiment of this invention and shows an example of the process in step S12 of FIG. It is a photograph which shows the 1st Embodiment of this invention and shows an example of the process in step S13 of FIG. It is a photograph which shows the 1st Embodiment of this invention and shows an example of the process in step S14 of FIG. It is a flowchart which shows an example of the control method of the piercing pest which concerns on the 2nd Embodiment of this invention. It is a photograph which shows the 2nd Embodiment of this invention and shows an example of the process in the flowchart of FIG.

  Hereinafter, embodiments (embodiments) for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
First, in the first embodiment of the present invention, a case of pine wilt disease will be described.
FIG. 1 shows a first embodiment of the present invention and is a schematic diagram showing an example of a relationship between a pathogen, pinewood nematode, and a piercing pest, pinewood beetle.

  First, FIG. 1A shows a state in which an adult pinewood beetle 20 has emerged from the pine 30 by attaching a pinewood nematode 10 having a body length of about 1 mm to the body or the like.

  Subsequently, in FIG. 1 (b), the adult pine beetle 20 feeds on the bark of fresh pine 30 to develop germinal cells after emergence (referred to as “post-eaten”), while the pine beetle pine This shows that the pine wood nematode 10 attached to the body of the adult moth 20 has invaded the tree of a healthy pine 30 from the postprandial mark of the adult pine wood beetle 20.

  Subsequently, in FIG. 1 (c), the adult pine wood beetle 20 feeds on the bark of fresh pine 30 while pine wood nematode 10 spreads throughout the pine 30 tree, It shows a weak state.

  Next, FIG. 1 (d) shows a state in which the pine wood nematode 10 that has spread throughout the tree body of the pine 30 proliferated in large quantities and the pine 30 died. When the pine wood nematode 10 grows in large quantities, the movement of moisture in the tree body of the pine 30 is finally stopped, and the pine 30 is withered. In addition, FIG. 1 (d) shows a state in which a pine beetle larva 21 has invaded the pine 30 tree.

  As described above, the adult pine beetle beetle 20 needs to eat the bark of fresh pine 30 in order to develop germinal cells after emergence, and copulates and lays eggs. Even if eggs are laid, the eggs are covered with pine ani and die, so they cannot reproduce on healthy pine 30. Therefore, the pine beetle can only be propagated on weak and dead trees. The pine wood nematode 10 that invaded into the pine tree of healthy pine 30 from the after-eating mark of adult pinewood beetle adult 20 caused a large amount of declining and dead trees of pine 30 to be a breeding place for pinewood beetle It leads to securing of. In other words, it can be seen that the pine wood nematode 10 provides a new spawning and breeding place for the pine wood beetle.

  Next, FIG. 1 (e) shows a state in which the pine larva 21 of the pine wood beetle has invaded the inside of the pine 30 and overwintered.

  Subsequently, FIG. 1 (f) shows a state in which the pinewood beetle becomes a cocoon 22. In addition, FIG. 1 (f) shows a state in which the pine wood nematode 10 that has spread throughout the tree body of the pine 30 has gathered in the cocoon room of the pine wood beetle in order to adhere to the cocoon 22 of pine wood Yes.

  Here, the pine wood nematode 10 can inhabit and breed in healthy trees, debilitated trees, and dead pine 30 trees. However, as pine 30 changes in quality and decays, it cannot live and becomes new healthy. It will be necessary to move to a new pine 30. Although the pine wood nematode 10 can move to a new healthy pine 30 even through the union of the roots, trunks and branches of the pine 30, it is not an effective dispersion means per se. Therefore, the pinewood nematode 10 invades the body of the pinewood beetle, invades the airway, etc., and is brought to the new healthy pine 30 together with the adult pinewood beetle 20 which has emerged, and the adult pinewood beetle 20 It will invade a healthy pine 30 tree from the after-eating mark and continue its new breeding activities. Thus, it can be said that the pine wood beetle is a vector insect that helps the pine wood nematode 10 to move to a new host.

  After going through the process of FIG. 1 (f), the process proceeds again to the process of FIG. 1 (a), and goes through the loop of the process of FIGS. 1 (a) to 1 (f) again.

  The pine wood nematode 10 and the pine wood beetle are the ones that the pine wood nematode transports the pine wood nematode 10 to a new host (healthy pine 30), and the pine wood nematode 10 transported to the new host dies It has created a breeding place for the pinewood beetle that will bring you to a new host. From the latter half of the 1960s, pine wilt disease has spread explosively due to this symbiotic symbiosis.

In the first embodiment of the present invention, the pine wood nematode 10 is prevented from breeding by controlling the perforated pest, the pine wood beetle, and the healthy pine 30 is protected.
Next, a method for controlling the pine beetle, the perforated pest, will be described.
FIG. 2 is a flowchart showing an example of a method for controlling piercing pests according to the first embodiment of the present invention.

  First, step S11 is a process of cutting down a damaged tree of the pine pine wood nematode 10 and cutting it to an appropriate length (1 m to 2 m). When controlling the adult pinewood beetle 20, the adult 20 inhabits many parts from the middle to the top of the tree trunk, so controlling in the state of standing trees is effective in controlling the cost. Because it is not practical, we will cut down the damaged trees of pine.

Subsequently, step S12 is a process of transporting the cut damaged tree to a place to be processed, stacking the damaged trees, and covering the upper part with a mesh-like adhesive sheet.
FIG. 3 is a photograph showing an example of the processing in step S12 of FIG. 2, showing the first embodiment of the present invention. FIG. 3 shows a state in which a mesh-like adhesive sheet 40 is covered on the stacked damaged tree group.

Subsequently, in step S13, the process of step S11 is performed on the upper part of the adhesive sheet 40 so that the cover sheet and the adhesive sheet 40 used in the subsequent process are not caught on the upper part of the damaged tree in which the adhesive sheet 40 is installed. It is a process of providing a space by covering the branches and the like that came out. Here, it is desirable that the amount of branches is as small as possible.
FIG. 4 is a photograph showing an example of the processing in step S13 of FIG. 2, showing the first embodiment of the present invention. FIG. 4 shows a state in which a branch 50 and the like are installed on the upper part of the pressure-sensitive adhesive sheet 40 in order to provide a space between the cover sheet used in the subsequent process and the pressure-sensitive adhesive sheet 40.

Subsequently, in step S14, the damaged tree covered with the adhesive sheet 40 is covered with a covering sheet, and the adult pine wood beetle 20 (perforating pest), a vector insect of the pinewood nematode 10 (pathogen), is contained in the covering sheet. It is a process of trapping and killing.
FIG. 5 is a photograph showing an example of the processing in step S14 of FIG. 2, showing the first embodiment of the present invention. FIG. 5 shows a state in which the covering sheet 60 is put on the damaged tree in the state of step S13 and the hem thereof is suppressed with a stone or a healthy tree so that the adult pine beetle 20 cannot escape. ing.

Next, the adhesive sheet 40 will be described.
The pressure-sensitive adhesive sheet 40 has a mesh shape, and the mesh size is desirably 3 mm or more and 5 mm or less. If the mesh size is less than 3 mm, the condensed water droplets do not flow quickly from the adhesive sheet 40 and the adhesive effect may be lost. On the other hand, when the size of the mesh is larger than 5 mm, there is a concern that the adult pine beetle beetle 20 may pass through the mesh or be easily removed even if it catches on the adhesive sheet 40.
Moreover, it does not specifically limit as a raw material of the sheet | seat layer of the adhesive sheet 40, For example, paper, a nonwoven fabric, polyethylene, a polypropylene, polyester, a polyvinyl chloride, nylon etc. are mentioned. In particular, polypropylene is suitable. These sheet layers may be used alone or in combination of two or more. In addition, the material of the pressure-sensitive adhesive layer is not particularly limited, but there are usually known pressure-sensitive adhesives for capturing insects such as natural rubber-based pressure-sensitive adhesives, polybutene-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, and hot-melt pressure-sensitive adhesives. Can be mentioned. In particular, a polybutene-based pressure-sensitive adhesive is suitable. Moreover, an adhesive layer is apply | coated to the single side | surface of the adhesive sheet 40 surface, both surfaces, or a specific site | part.

Next, the covering sheet 60 will be described.
The thickness of the covering sheet 60 is desirably 0.1 mm or more. This is because when the thickness is less than 0.1 mm, there is a concern about confining the adult pine wood beetle adult 20 in a strong manner.
Further, the requirements imposed on the covering sheet 60 include, for example, that the surface is smooth and that the adult pine beetle 20 cannot grasp the surface, that moisture is released, is relatively inexpensive and can be easily obtained, and The ability to work outdoors is relatively easy. In the experiments by the present inventors, an experimental result has been obtained in which the surface of the blue sheet having a relatively rough surface is broken by an adult 20 of the pinewood beetle.
Specifically, as the material of the covering sheet 60, for example, a high-function agricultural application type PO film that is also used as a covering of a greenhouse is suitable.

(Second Embodiment)
Next, in the second embodiment of the present invention, a case of oak, oak, and deer mass withering (so-called beech family tree wilt) will be described.
In this case, the pathogen is a fungus that kills oaks, oaks, and mites (commonly known as oak fungus), and the piercing pest is an oak beetle. And, the relationship between the pathogen Nara fungus and the perforated pest Oak periwinkle is the same as the relationship between the pine wood nematode (pathogen) and the pine wood beetle (perforating pest) in the first embodiment described above. is there.

  That is, in the second embodiment of the present invention, by controlling the perforated pests, Platypus quercivorus, the propagation of oak fungus is prevented, and healthy oaks, oaks, and worms are protected. Specifically, the idea is to prevent the occurrence of new damage by not dispersing the oak beetle that carries oak fungi from the damaged tree and perforating the new healthy tree. The death of oaks, oaks, and pods is due to the occurrence of oak fungi when the oak beetle pierces oak fungus into the body of a parasitic plant, and the invasion of oak fungus causes water conduction inhibition of the trees.

Next, a method for controlling the Platypus quercivorus that is a piercing pest will be described.
Since the Platypus quercivorus is a piercing pest that mainly drills in the lower part of the trunk, there are cases where the damaged tree is felled and controlled, and when it is controlled while standing.

  First, the damaged tree is felled, and the control method for the perforated pest insect, Platypus quercivorus, undergoes the same process as the control method for the perforated pest according to the first embodiment shown in FIG. That is, oak fungus is applied as a pathogen instead of pine wood nematode, and oak beetle is applied as a perforated pest instead of pine wood beetle.

Next, a method for controlling the Platypus quercivorus that is a piercing pest while standing is described.
FIG. 6 is a flowchart showing an example of a method for controlling piercing pests according to the second embodiment of the present invention.

  First, step S21 is a step of covering (wrapping) a mesh-like adhesive sheet on the trunk of a damaged tree. Here, the range to be wound is a range in which an entrance of the Platypus quercivorus can be seen (it can be seen immediately). The mesh-like pressure-sensitive adhesive sheet is the same as that in the first embodiment.

  Subsequently, in step S22, the damaged tree covered with the adhesive sheet is covered with the covering sheet, and the adult insect (perforating pest), the vector insect of the oak fungus (pathogen), is trapped in the covering sheet and killed. It is a process to make. Here, the same cover sheet as that of the second embodiment is used.

  FIG. 7 is a photograph showing an example of processing in the flowchart of FIG. 6, showing the second embodiment of the present invention. In FIG. 7, a mesh-like adhesive sheet 70 is wrapped around the trunk of a damaged tree, and then the covering sheet 80 is fixed and covered with gum tape or the like so that adults of the Platypus quercivorus cannot escape. It is shown.

In addition, during the process of “wrapping the adhesive sheet for each single tree of the standing tree” → “covering with a covering sheet after that”, the adhesive surface of the adhesive sheet may stick to the operator, and the winding work may be unexpectedly difficult. Conceivable.
Therefore, affix the adhesive sheet to the cover sheet, for example, at the center, and cover the exposed surface of the adhesive with a release sheet. When covering the standing tree with the cover sheet, remove the adhesive release sheet. A form of performing the work is also applicable. That is, in the case of this form, the damaged tree infected with oak fungus (pathogen) is covered with a cover sheet with a mesh-like adhesive sheet attached, and the adult insect of the pathogen vector insect (perforated pest) Is trapped in the covering sheet and killed.
In such a configuration, when the standing tree is covered with the covering sheet, it is possible to avoid a concern that the adhesive surface of the adhesive sheet sticks to the operator and makes the winding operation difficult.

Further, in the case of targeting the control of Platypus quercivorus in the state of standing trees, a form in which an adhesive sheet is wound around the standing trees as it is without using a covering sheet is also applicable.
As an effect in this case, first of all, as a preventive effect, the capture and attractant of the adults gathered at the first attack of the Platypus quercivorus on the healthy tree or the adult pheromone of the Platypus quercivorus already penetrated Insult killing Kashiwagi by the combined use. In addition, as an exterminating effect, there is a suppression and extermination of flying from a damaged tree caused by an oak beetle to another forest.

  In addition, many oak beetles have been generated from root stocks, and root stock processing has become a problem. Therefore, the root stock is cut from the root and in the state of standing trees, for example, the same method as that for the control of the above-mentioned pinewood beetle, that is, an adhesive sheet is placed on the root stock portion, and a space is provided by branches or the like. It is also possible to apply a form in which the adult insects (perforated pests), which are vector insects of the pathogen, are trapped in the covering sheet and killed by covering with a covering sheet.

  Note that each of the above-described embodiments of the present invention is merely a specific example for carrying out the present invention, and the technical scope of the present invention should not be construed as being limited thereto. Is. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features thereof.

10 pinewood nematode, 20 adult pinewood beetle larvae, 21 pinewood beetle larvae, 22 pinewood beetle moth, 30 pine, 40 adhesive sheet, 50 branch, 60 covering sheet, 70 adhesive sheet, 80 covering sheet

Claims (6)

A process of covering the damaged tree of the pathogen with a mesh-like adhesive sheet;
Covering the damaged tree covered with the pressure-sensitive adhesive sheet with a covering sheet, and confining the piercing pest, which is a vector insect of the pathogen, in the covering sheet and killing it. Control method.   A pathogenic insect pest characterized by covering a damaged tree of a pathogen with a covering sheet on which a mesh-like adhesive sheet is attached, and trapping and killing the piercing pest that is a vector insect of the pathogen in the covering sheet. Control method.   2. The method for controlling perforated pests according to claim 1, wherein the pathogen is a pinewood nematode and the perforated pest is a pine beetle.   The method for controlling a piercing pest according to claim 1 or 2, wherein the pathogen is a larva and the piercing pest is a Platypus quercivorus.   The method for controlling piercing pests according to any one of claims 1 to 4, wherein the mesh size of the pressure-sensitive adhesive sheet is 3 mm or more and 5 mm or less.   The method for controlling a piercing pest according to any one of claims 1 to 5, wherein the covering sheet has a thickness of 0.1 mm or more.

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