TW201700003A - Plant protection method and network structure - Google Patents

Abstract

The method for protecting a plant according to an embodiment of the present invention is a method for protecting a plant 20 from damage by a pest. This protection method has a mounting step of attaching the net 10 made of at least one thermoplastic resin and containing the insecticidal active ingredient to the plant in such a manner that the protective structure 30A having a three-dimensional structure is formed from the net.

Description

Plant protection method and network structure

The present invention relates to a method and network structure for protecting plants from pests.

For example, a technique described in Patent Document 1 is known as a method for protecting plants from damage by pests. In the technique described in Patent Document 1, the plant is protected by coating the surface of a portion of the plant that must be protected by using a sheet-like structure impregnated with the insecticide.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open Publication No. 2013-542926

Reducing the disasters caused by pests is very important for the cultivation of plants and requires further protection of the plants from pests.

Accordingly, the present invention provides a method for achieving superior plant protection by reducing pest pests in plants and a mesh structure therefor.

A method for protecting a plant according to an aspect of the present invention is a method for protecting a plant from a pest, and having a net made of at least one thermoplastic resin and containing a pesticidal active ingredient to form a protective structure having a three-dimensional structure. Installed on the plant installation steps.

In the above method, the protective structure is formed by attaching the net to the plant. Guarantee The care structure has a three-dimensional structure, and thus it is easier for the pest to form an obstacle. Further, since the protective structure has a three-dimensional structure, the residence time of the pest entering the protective structure in the protective structure becomes long. Since the net forming the protective structure contains the insecticidal active ingredient, if the residence time of the pest in the protective structure becomes long, the pest is poisoned by the insecticidal active ingredient. As a result, the pest cannot pass through the protective structure. Even if it is passed temporarily, it will hinder at least one of the destructive behavior and proliferation of pests. Therefore, plant pest damage can be reduced to achieve superior plant protection.

In one embodiment, the three-dimensional structure may also be a pleated structure or a twisted structure of a net or a woven structure of a plurality of nets. In the case of such a complicated three-dimensional structure, the protective structure is more likely to be a barrier to pests, and the residence time of the pest in the protective structure can be further prolonged.

In one embodiment, the protective structure has an uneven shape with respect to the surface of the mounting portion of the net in the plant.

In one embodiment, the mesh may be a tubular mesh, and in the mounting step, the tubular net having a pleated structure compressed in a bellows shape in the extending direction of the tubular mesh is wound around the plant. A protective structure is formed around the mounting portion of the medium mesh.

In this case, since the tubular net having the pleated structure is wound around the plant to form the protective structure, the protective structure also has a wrinkle structure. Therefore, the protective structure is more likely to become a barrier for pests, and the residence time of the pest in the protective structure can be prolonged.

In an embodiment, in the mounting step, after the net is wound around the mounting portion of the net in the plant to form a tubular net, the tubular net is in the shape of a bellows in the extending direction of the tubular net. Compression, thereby forming a protective structure having a pleated structure.

In this case, the protective structure also has a pleated structure. Therefore, the protective structure is more likely to become a barrier for pests, and the residence time of the pest in the protective structure can be prolonged.

In one embodiment, in the installation step, the net may be attached to the plant and the pests move toward the moving path of the protected part that must be protected from the damage of the pest.

In this case, since the net is attached to the above-described moving path of the pest, the protective structure is disposed on the moving path. Therefore, the pest can be prevented from reaching the protected site by the protective structure, and thus the plant can be further protected from pest damage.

In one embodiment, the mounting site of the mounting net may be at least one of a stem, a stem, a pseudo stem, a branch, a petiole, and a peduncle of the plant.

Another aspect of the present invention is a mesh structure system for protecting plants from pests, and having at least one mesh made of a thermoplastic resin and containing an insecticidal active ingredient. Also, the mesh is formed with a three-dimensional structure.

When such a mesh structure is attached to a plant, since the mesh structure has a three-dimensional structure, it is more likely to form a hindrance to the pest. Further, since the mesh structure has a three-dimensional structure, the residence time of the pest entering the mesh structure in the mesh structure becomes long. The net forming the network structure contains the insecticidal active ingredient, so if the residence time of the pest in the network structure becomes long, the pest is poisoned by the insecticidal active ingredient. As a result, the pest cannot pass through the network structure. Even if it is passed temporarily, it will hinder at least one of the destructive behavior and proliferation of pests. Therefore, the pest damage of the plant can be reduced.

In one embodiment, the three-dimensional structure may also be a pleated structure or a twisted structure of a net or a woven structure of a plurality of nets. In the case of such a complicated three-dimensional structure, the mesh structure is more likely to become a barrier for pests, and it can prolong the residence time of the pests in the mesh structure.

In one embodiment, the mesh may be a tubular mesh, and the three-dimensional structure is a wrinkle structure in which the tubular mesh is compressed in a bellows shape with respect to the extending direction of the tubular mesh. In this case, the mesh structure has a pleated structure, so that the mesh structure is more likely to become a barrier for pests, and the residence time of the pests in the mesh structure can be prolonged.

The plant protection method or the insecticidal active ingredient in the network structure may be at least one selected from the group consisting of pyrethroid insecticides and insect growth control agents. Further, the method for protecting the above plant or the web in the network structure may be made of a thermoplastic resin.

According to the present invention, plants can be protected from pest damage.

10‧‧‧ net

10A‧‧‧Tube net

10B‧‧‧ mesh structure

10C‧‧‧Tubular network

10D‧‧‧ mesh structure

11‧‧‧ mesh

12‧‧‧ silk

20‧‧‧ plants

21‧‧‧Installation site

22‧‧‧protected parts

30A‧‧‧Protection structure

30B‧‧‧Protective structure

30C‧‧‧Protective structure

30D‧‧‧Protection structure

41‧‧‧ plastic cup

42‧‧‧ plastic cup

43‧‧‧ corner column

43a‧‧‧ top

44‧‧‧ corner column

44a‧‧‧ top

45‧‧‧Cylinder

45a‧‧‧Installation site

46‧‧‧White mat

50‧‧‧Apple trees

51‧‧‧Installation location

60‧‧‧Capture

61‧‧‧PET bottles

62‧‧‧ attracting bait

70‧‧‧ citrus saplings

71‧‧‧Installation location

72‧‧‧ Coating location

A‧‧‧ area

N‧‧‧

S‧‧‧ rope

Fig. 1 is a schematic view showing an example of a net used in the method for protecting plants according to an embodiment.

2 is a diagram showing the network shown in FIG. 1. FIG. 2(a) shows an enlarged view of an area A of FIG. 1, and FIG. 2(b) shows another example of the area A of FIG. .

3(a) and 3(b) are schematic views for explaining a mounting portion of a net in a plant.

Fig. 4 is a schematic view showing an installation state of a plant net installed in an example of a mounting procedure of a method for protecting a plant.

Fig. 5 is a view for explaining an example of a preparation step in a method for protecting a plant.

Fig. 6 is a view showing the steps subsequent to Fig. 5 of the preparation steps in the plant protection method.

Fig. 7 is a view for explaining an example of a mounting step of the method for protecting a plant, and Fig. 7(a) shows a step of attaching the net structure formed in Fig. 6 to a plant, and Fig. 7(b) Fig. 7(a) shows the case of Fig. 7(a) viewed from the upper side.

Fig. 8 is a schematic view showing an installation state of a plant net installed in another example of the mounting procedure of the method for protecting a plant.

Fig. 9 is a view for explaining an example of a mounting procedure for attaching a net to a plant.

Fig. 10 is a view for explaining a step subsequent to Fig. 9 in an example of a mounting step of mounting a net to a plant.

Fig. 11 is a view showing still another example of the mounting steps of the method for protecting a plant.

Figure 12 is a view showing still another example of the mounting procedure of the method for protecting a plant. formula.

Fig. 13 is a schematic view showing an example of a network structure including a plurality of nets.

Fig. 14 is a schematic view showing the configuration of a test apparatus used in Test Example 1.

Fig. 15 is a view showing a method of mounting the net in Test Example 1, wherein Fig. 15(a) shows a method 1 for mounting a net in Test Example 1, and (b) shows a method 2 for mounting a net in Test Example 1, (c) shows the mounting method 3 in Test Example 1.

Fig. 16 is a view for explaining the test method in Test Example 2.

Figure 17 is a diagram for explaining the test method in Test Example 3.

Embodiments of the present invention will be described with reference to the drawings. Label the same elements with the same symbols. The description of the repetition is omitted. The dimensional ratios of the drawings are not necessarily consistent with those illustrated.

Hereinafter, in various embodiments described, the plant is protected from pests by stereoscopically attaching a net made of a thermoplastic resin containing an insecticidal active ingredient to a plant.

First, the net 10 for protecting plants will be described with reference to Fig. 1 . As shown schematically in Figure 1, the mesh 10 is in the form of a strip. The term "band" means an elongated planar shape having a certain width. The width of the belt-shaped net 10 can be appropriately changed depending on the portion to be wound, and is usually in the range of 1 cm to 2 m, preferably 2 cm to 1 m. Further, the length thereof may be a length necessary for winding, and is usually in the range of 10 cm to 30 m, preferably 20 cm to 20 m, more preferably 30 cm to 10 m.

The net 10 is formed by weaving or woven the wire 12 in such a manner as to form a plurality of meshes 11. Fig. 2(a) shows an example of a structure in which the area A of Fig. 1 is enlarged. An example of the mesh 10 of the woven structure formed by weaving the filaments 12 in such a manner as to form a plurality of meshes 11 is shown in Fig. 2(a). Fig. 2(b) shows another example of the structure in which the area A of Fig. 1 is enlarged. An example of the net 10 of the woven structure formed by woven the wire 12 in such a manner as to form a plurality of meshes 11 is shown in FIG. 2(b). In (a) and (b) of Fig. 2, the woven structure or the woven knot is illustrated. From the viewpoint of construction, in order to distinguish one wire 12 from other wires 12, the wire 12 in one direction is shaded.

The shape of the mesh 11 is preferably a polygon, and examples of the polygon include a quadrangle, a hexagon, an octagon, and the like. In one embodiment, the shape of the plurality of meshes 11 of the net 10 may be the same, and the shape of the mesh 11 may be different. When the shape of the plurality of meshes 11 is the same, the shape of the mesh 11 is preferably a quadrangle or a hexagon.

The size of the mesh 11 (hole size) is usually in the range of 0.1 to 50 mm, preferably 0.2 to 20 mm, more preferably 0.2 to 10 mm. When the shape of the mesh 11 is a quadrangle, the distance between the two sets of opposite sides of the four sides constituting the quadrilateral is a and b, and the size of the mesh 11 is the distance a, b. Said. Examples of quadrilaterals include rectangles, squares, and parallelograms. The smaller of the angles formed by the two sides of the parallelogram is typically in the range of 60 to 90 degrees. In one embodiment, when the shape of the mesh 11 is square, the size of the mesh 11 is represented by the length of one side of the square. In the case where the shape of the mesh 11 is a hexagon or an octagon, the size of the mesh is represented by the length of the diagonal.

The silk 12 is a synthetic fiber made of a thermoplastic resin containing an insecticidal active ingredient. The thickness of the wire 12 must be such as to maintain the strength as the strength of the web 10, and is usually in the range of 10 to 1000 denier, preferably 50 to 500 denier, and more preferably 50 to 300 denier.

Examples of the thermoplastic resin include polyolefin resin, polyvinyl alcohol, polyvinyl acetate, polycarbonate, polyester, polyamine, polystyrene, polymethyl methacrylate, polyacrylonitrile, and acrylonitrile-butyl. A diene-styrene copolymer, a polyvinyl chloride, or the like. The thermoplastic resin is preferably a polyolefin resin. Further, as the polyolefin resin, the following compounds are preferred.

(i) A homopolymer of an α-olefin: polyethylene, polypropylene, or the like.

(ii) Ethylene-α-olefin copolymer: an ethylene-propylene copolymer, an ethylene-butene-1 copolymer, an ethylene-4-methyl-1-pentene copolymer, an ethylene-hexene-1 copolymer, and the like.

(iii) a copolymer of an organic carboxylic acid derivative having an ethylenically unsaturated bond and ethylene: B Alkene-methyl methacrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-vinyl acetate-methyl methacrylate copolymer, and the like.

Examples of the insecticidal active ingredient include pyrethroid insecticides and insect growth control agents.

Examples of the pyrethroid insecticide include acrinathrin, allethrin, d-methrin, dd-methrin, bifenthrin, and fentanyl. Cycloprothrin, cyfluthrin, beta-cyfluthrin, cyhalothrin, gamma-cyhalothrin, lambda-cyhalothrin ), cypermethrin, alpha-cypermethrin, theta-cypermethrin, zeta-cypermethrin, cyphenothrin, bromine Deltamethrin, dimefluthrin, ementhrin, esfenvalerate, etofenprox, fenpropathrin, fenprofen (fenvalerate), flucythrinate, flufenprox, flumethrin, fluvalinate, furamethrin, bifenthrin (halfenprox), imiprothrin, metofluthrin, permethrin, phenothrin, d-phenol Dingning, C Prallethrin, profluthrin, pyrethrins, resmethrin, d-columnine, silafluofen, fluvalinate (tau- Fluvalinate, tefluthrin, terallethrin, tetramethrin, d-methrin, tralmethrin, transfluthrin, The natural pyrethrin is preferably at least one selected from the group consisting of fentanyl, fenvalerate, deltamethrin, α-saidingin, bifenin, λ-sailonin and fenthrin. 1 species.

Among the above compounds, when an isomer such as an optical isomer, a stereoisomer, or a geometric isomer is present, it is included.

Specific examples of the insect growth controlling agent include a juvenile hormone-active compound or a chitin-synthesis inhibitor. Examples of the juvenile hormone-active compound include pyriproxyfen, hydroprene, metoprene, and fenoxycarb. Examples of the chitin synthesis inhibitory oxime include etoxazole, bistrifluron, chlorfluazuron, diflubenzuron, fluzuron, and fluorocyclic urea. (flucycloxuron), flufenoxuron, hexaflumuron, lufenuron, novaluron, noviflumuron, teflubenzuron, sanfuron (triflumuron).

The content of the insecticidally active ingredient is usually from 0.1 to 20% by weight, preferably from 0.2 to 10% by weight, based on 100% by weight of the thermoplastic resin web.

When the net 10 contains a pyrethroid insecticide and an insect growth controlling agent, the ratio of the pyrethroid insecticide to the insect growth controlling agent is usually 1:10000 to 1000 by weight. :1, preferably 1:1000~100:1, more preferably 1:20~20:1, further preferably 1:10~10:1, optimally 1:5~5:1 range.

As a combination of a pyrethroid insecticide and an insect growth control agent, the following combination is mentioned, for example.

‧Bai Ningning and Bailipfen

‧Fenyl fenvalerate and bailipfen

‧ deltamethrin and bailipfen

‧α-赛灭宁与百利普芬

‧Bifening and Bailipfen

‧etherthrin and balippren

‧Bai Yining and Mei Ciping

‧High fenvalerate and Meiting

‧ deltamethrin and meiping

‧α-赛灭宁与美赐平

‧Bifen Ning and Mei Ciping

‧etherthrin and meipingping

Among the above combinations, a combination of fentanyl or fenvalerate and bailipfen is preferred.

Further, as an example of the blending ratio of fentanyl or fenvalerate to bailipfen, the weight ratio may be 1:1 and 2:1.

An example of a method for producing a web 10 made of a thermoplastic resin containing an insecticidal active ingredient will be described. For convenience of explanation, first, a method of manufacturing the web 10 made of a thermoplastic resin will be described. The web 10 made of a thermoplastic resin is formed of a yarn obtained by spinning a thermoplastic resin (hereinafter referred to as a thermoplastic resin yarn). The thermoplastic resin yarn is obtained by melt-kneading a thermoplastic resin and then melt-spinning. The melt kneading can be carried out using a machine such as an extruder, a roll forming machine, or a kneader.

The web 10 made of a thermoplastic resin containing an insecticidal active ingredient can be melt-kneaded or a thermoplastic resin and an insecticidal active ingredient by a mixture obtained by mixing a thermoplastic resin and an insecticidal active ingredient in the method for producing a thermoplastic resin yarn. They are supplied to a machine such as an extruder and melt-kneaded. Further, in the case of melt kneading by an extruder, the insecticidal active ingredient may be added from the extruder by using a raw material adding device such as a side extruder or a feeder.

As the web 10 made of a thermoplastic resin containing an insecticidal active ingredient, a commercially available net can be used. As the net, for example, Interceptor (registered trademark) of BASF SE (including polyester network of α-sainining), DuraNet (registered trademark) of Clarke Moquito Control Product Inc. (including α-saidingin) Polyethylene net), Dawa Plus (registered trademark) of Tanna Netting Co.Ltd (net network containing deltamethrin), NetProtect (registered trademark) of Bestnet Europe Ltd (polyethylene containing deltamethrin) Net), Iconet (registered trademark) of Syngenta AG (including λ-Xeronine polyester mesh), Olyset (registered trademark) of Sumitomo Chemical (including polyethylene network of Baishenning), Lifenet (registered trademark) of Bayer Crop Science AG (polypropylene network containing deltamethrin), and PermaNet of Vestergaard (registered Trademark) (polyester net containing deltamethrin or polyethylene mesh).

The net 10 may contain, in addition to the insecticidal active ingredient, an additive such as a light stabilizer and a coloring agent, and other components such as a synergist.

Examples of the light stabilizer include a benzophenone-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber, and three. It is a UV absorber, a benzoate light stabilizer, and a hindered amine light stabilizer. Among these light stabilizers, a benzophenone-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber, and a benzoate-based light stabilizer are preferable. The content of the light stabilizer is usually 0.05 to 20% by weight, preferably 0.1 to 10% by weight based on 100% by weight of the thermoplastic resin web.

Examples of the colorant include inorganic pigments, organic pigments, and dyes.

As the inorganic pigment, for example, an oxide, a composite metal oxide, a hydroxide, a chromate, a sulfate, a carbonate, a citrate, a ferrocyanide, a phosphate, a carbon, a metal powder, a bronze powder, a zinc powder , pearl pigments.

As the organic pigment, for example, a dyed lake, a quinoline yellow lake, an azo system, a phthalocyanine system, a condensed polycyclic system, a nitro group, a nitrone group, a twilight color, and the like system.

Examples of the dye include azo, anthraquinone, quinoline, anthraquinone, perinone, methine, thioindigo, heterocyclic, basic dye, and acid dye.

The content of the colorant is usually in the range of 0.01 to 5.0% by weight, preferably 0.1 to 2.0% by weight based on 100% by weight of the thermoplastic resin web.

As a synergist, the following are mentioned, for example.

‧α-[2-(2-Butoxyethoxy)ethoxy]-4,5-methylenedioxy-2-propyltoluene [Xi Li Jing (PBO)]

‧N-(2-ethylhexyl)-1-isopropyl-4-methylbicyclo(2,2,2)oct-5-ene-2,3-dicarboquinone imine [Xie Liling 500]

‧ butyl stearate

‧ bis-(2,3,3,3-tetrachloropropyl)ether [S-421]

‧N-(2-ethylhexyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylimenide [MGK264]

The content of the synergist is usually in the range of 0.1 to 20% by weight, preferably 0.2 to 10% by weight based on 100% by weight of the thermoplastic resin web.

When the net 10 contains the above-mentioned light stabilizer or the like, it is similar to the case where the insecticidal active ingredient is added to the thermoplastic resin yarn in the method for producing the web 10 made of a thermoplastic resin containing the insecticidal active ingredient. A stabilizer or the like may be added to the thermoplastic resin yarn.

As the web 10 made of a thermoplastic resin containing an insecticidal active ingredient and a synergist, a commercially available net can be used. As the net, for example, Olyset plus (registered trademark) of Sumitomo Chemical (a polyethylene net including Baishenning and PBO) and PermaNet 3.0 (registered trademark) of Vestergaard (a polyester containing deltamethrin) a combination of polyethylene containing deltamethrin and PBO).

Next, the plants protected by the net 10 will be described. The plants to be protected are not particularly limited, and are, for example, citrus, banana, coffee, and olive trees.

Other examples of plants to be protected include mango, cashew, durian, papaya, lychee, avocado, samba, guava, passion fruit, macadamia, lychee, coconut, fig, apple, Peach, clam, cherry, maple, chestnut, plum, eucalyptus, kiwi, grape, rubber and other fruits or nuts; pineapple, cocoa, pepper, vanilla, nutmeg, oil palm, twin coconut and other spices or oil Plants; and oak, crape myrtle, willow, wisteria, mulberry, eucalyptus, eucalyptus, rose, cypress, Cryptomeria, cypress leaves, hazelnut tree, larch, eucalyptus, scales spruce, sylvestris, pine, hemlock, fir, cypress leaves, kauri, lychee, lamin, magnolia, balsa, elm Wood or ornamental plants such as eucalyptus, teak, egg-and-flower spruce.

In the description of the plant, the plant is specified, for example, by the name of the fruit of the plant, and the term "plant" as used herein means the whole plant including the root region, the dried region, and the like. On the other hand, "protecting plants" means protecting parts of plants that must be protected (hereinafter referred to as "protected parts") from pests. Examples of the protected part include the result part of the fruit, the flowering part, the sprout part, and the leaf.

The installation net 10 in the plant 20 is shown by the pattern diagram of the plant 20 shown in (a) of FIG. 3 and the (b) of FIG. 3 which is an enlarged view of the area surrounded by the dotted line of FIG. 3(a). The mounting portion 21 will be described. For the sake of explanation, the sprout site is exemplified as the protected portion 22 in (b) of FIG. 3 .

As shown in (a) and (b) of FIG. 3, the attachment portion 21 is a portion on the movement path when the pest moves from, for example, the ground side or from the leaf toward the protected portion 22. Examples of the mounting site 21 include stems, stems, branches, petioles, pseudo stems, and peduncles of the plant 20. A pseudostem means a stem-like portion (leaf sheath) that extends higher from the ground, for example, from a banana or the like. In Fig. 3, the case where the mounting portion 21 is dry is exemplified. When the net 10 is attached to the plant 20, the net 10 is not limited to the case where the net 10 is attached to one mounting portion 21, and the net 10 may be attached to a plurality of mounting portions 21. When the net 10 is mounted on a plurality of mounting locations 21, the net 10 of the same form may be used, or the nets 10 of different forms may be combined.

The plant 20 and the mounting portion 21 have been exemplified. In one embodiment, the mounting portion 21 may be a portion of the trunk of a citrus (orange, etc.) which is about 0.1 m to 1 m from the ground.

Next, the pests in the case where the net 20 is used to protect the plants 20 from pests will be described. Examples of such pests include coccoids, ants, and thrips. And weevil (weevil).

The scale insect is an insect of the family Coccoidea. Examples of scale insects include: Abgrallaspis cyanophylli, Aonidiella aurantii, Aonidiella inornata, Aonidiella orientalis, and coconut Aspidiotus destructor, Chrysomphalus aonidum, Chrysomphalus dictyospermi, Diaspis boisduvalii, Hemiberlesia lataniae, etc.

As other examples of scale insects, there may be mentioned shields such as Ischnaspis longirostris, Pinnaspis buxi, Pseudaulacaspis cockerelli, and Pseudaulacaspis papayae. Scale insects; Coccus hesperidum, Coccus viridis, Eucalymnatus tessellatus, Saissetia coffeae, and other scale insects; (Icerya aegyptiaca) and other cotton beetles; and Steatococcus samaraius, Dysmicoccus brevipes, Dysmicoccus neobrevipes, Ferrisia virgata, Nipaecoccus nipae ), citrus meal (Planococcus citri), Planococcus minor (P. urtica), Pseudococcus elisae, Pseudococcus jackbeardsleyi, Pseudococcus orchidicola, etc.

Further examples of the scale insect include: Florida Red Scale (Chrysomphalus aonidum), Lecanium Scale (Parthenolecanium corni), San Jose Scale (Quadraspidiotus perniciosus, Pear Branch). Black Scale (Saissetia oleae, Black Helmet), Walnut Scale (quadraspidiotus JUGLANSREGIAE, Walnut Shield).

Ants belong to the insects of the Formicidae. Examples of ants include: Anoplolepis gracilipes, Brachymyrmex obscurior, Camponotus consobrinus, Camponotus pennsylvanicus, Camponotus variegatus, Nylanderia vaga, Nylanderia bourbonica, Oecophylla smaragdina, Paratrechina longicornis, Plagiolepis alluaudi, ants of the genus Firefly.

As other examples of ants, Ants of the army ants (Dorylomorphs) such as Ecitoninae and Cerapachyinae; Paraponerinae and Ponerinae are mentioned. Ants of the genus Poneroids; Antyreomorphs, Linepithema, Ochetellus, Technomyrmex strenuus, and other ants of the genus Dolichoderomorphs; Ants of Paratrechina sakurae), Lasius japonicus, Camponotus japonicus, Formica japonica, Anoplolepis longipes, Paratrechina longicornis, Plagiolepis alluaudi, and other ant subfamilies (Formicinae); Ants such as Antini, Pristomyrmex, Monomorium intrudens, Pheidole megacephala, etc., and other ants of Myrmicinae.

The scorpion is an insect belonging to the genus. As an example of a thrips, Chaetanaphothrips signipennis (Chalk embroidered horse), Chaetanaphothrips Clarus, Chaetanaphothrips orchidii, Hercinothrips bicinctus, Hercinothirps femoralis, Thrips florum, Thrips hawaiiensis ), Frankliniella parvula, Elixothrips brevisetis, Scirthothrips dorsalis, Thrips tabaci, Frankliniella occidentalis, palm scorpion Horse (Thrips palmi) and so on.

The insects belong to the insects of the family Curculionoidea, which can be cited as: Cosmopolites sordidus, Odoiporus longicollis, Polytus mellerborgi, and yellow star black elephants. Pissodes obscurus), Pistos nitidus, Shirahoshizo insidiosus, Dyscerus hylobioides, Cryptorhynchus lapathi, Sipalinus gigas, and the like.

Pests contain not only insects, but also mites and spiders. For example, Diptera, Blattaria, Dermaptera, Hemiptera, Hymenoptera, Orthoptera, Isoptera ( Isoptera), Araneida, Lepidoptera, Coleoptera, Thysanoptera, Acarina, Chilopoda, and Diplopoda.

Further, other examples of pests may also include Blastophagus piniperda, Blastophagus minor, Cryphalus fulvus, and spruce as Scolytidae. Ips typographus japonicus, Ips typographus subelongatus, Scolytus japonicus Chapuis, Xyleborus validus, Xylosandrus germanus, Crossotarsus niponicus, Lyctus brunneus, and Lyctus linearis.

Further examples of pests may also include Anoplophora malasiaca, Batocera lineolata, Apriona japonica, and Massicus raddei as Cerambycidae. , Xylotrechus pyrrhoderus, Schwarzerium quadricolle, Mecynippus pubicornis, Phytoecia rufiventris, Psacothea hilaris hilaris, gold Acalolepta luxuriosa, Monochamus alternatus, Arhopalus rusticus, Batocera lineolata, Cagosima sanguinolenta, blush Eupromus ruber, Megopis sinica, Semanotus japonicus, The Asian Longhorned Beetle (Anoplophora glabripennis, Ophiopogon japonica), Oberea japonica, Spirulina (Prionus) Insularis insularis), Chlorophorus annularis, coffee white stem borer (Xylotrechus quadripes).

Examples of pests may further include, as the Buprestidae, Ovalisia vivata and Boupres haemorrhoidalis.

Examples of pests may further include, as a Cicadidae, a Tibicenini, a Polyneurini, a Platypleurini, and a Magicicada sp.

Next, a method of protecting a plant using the net 10 shown in Fig. 1 will be described. The plant protection method has a mounting step of attaching the net 10 to the plant 20 in such a manner that the net 10 is formed into a three-dimensional shape. As a method of mounting the net 10 in this mounting step, it has various forms. In the following description, the three-dimensional structure formed by winding the net 10 around the plant 20 is referred to as a protective structure. Since the protective structure has a three-dimensional structure formed by a mesh, it is also a mesh structure.

[First Embodiment]

The first embodiment of the method for protecting plants will be described with reference to Figs. 4 to 7 . In the first embodiment, the net 10 is three-dimensionally attached to the plant 20, specifically, the attachment portion 21 so as to form the protective structure 30A shown in FIG. As shown in FIG. 4, the net 10 may be attached to one of the mounting portions 21 (for example, dry, etc.). The mounting portion 21 is generally in the shape of a rod extending in one direction. Therefore, in Fig. 4, the mounting portion 21 of the net 10 is schematically (or patterned) in the plant 20 with a bar. Therefore, in the drawing, both ends of the mounting portion 21 become free ends, and as shown in Fig. 3, the mounting portion 21 is continuously connected to other portions of the plant 20. The same applies to the other figures below.

In the method for protecting a plant according to the first embodiment, a preparation step of preparing a mesh structure for mounting is performed before the net 10 is attached to the mounting portion 21. In this preparation step, as shown in FIG. 5, the opposite sides of the belt-like net 10 are joined to each other (long sides in FIG. 5) to form a cylindrical net 10A, and the rope S is passed through the cylindrical net 10A. .

The joining of the opposite sides of the net 10 is not particularly limited as long as it can be joined, for example, it can be joined by sewing or the like, or one can be joined to the other and joined, and an adhesive tape can also be used. The binding machine or the like is joined, and may be heated and crimped or the hook or the surface fastener is attached to the net 10 in advance and joined by the net.

Thereafter, as shown by the arrow in Fig. 5, the tubular net 10A is compressed in a bellows shape along the extending direction of the cylindrical net 10A (the direction in which the rope S passes) to form a mountain pleat line and a valley as shown in Fig. 6. The pleated structure is a pleated structure of the pleated structure 10B.

The mesh structure 10B is wound around the attachment portion 21 at least once as shown in FIGS. 7(a) and 7(b), whereby the mesh structure 10B is attached to the plant 20, specifically, the installation. Part 21. By mounting such a mesh structure 10B, as shown in FIG. 4, a three-dimensional protective structure 30A having a concavo-convex shape with respect to the surface of the mounting portion 21 is formed. FIG. 4 schematically shows a state in which the mesh structure 10B is wound around the mounting portion 21 three times. The mesh structure 10B can be fixed to the plant 20, for example, by knotting the string S.

When the mesh structure 10B is wound around the mounting portion 21, it is wound twice or more. In this case, it may be wound on the wound mesh structure 10B (at substantially the same position) or may be wound in a spiral shape while staggering one of the portions of the mesh structure 10B. .

As described above, the net 10, specifically the net-like structure 10B formed by forming the three-dimensional structure by the net 10, is wound around the plant 20, and the net 10 is in contact with the plant 20 at a plurality of locations. Further, since the mesh structure 10B having the pleated structure is wound around the plant 20 to form the protective structure 30A, the protective structure 30A also has the pleated structure of the net 10. In FIG. 6, in order to explain the method of forming the mesh structure 10B, it is illustrated after simplification, and since the mesh 10 has flexibility, when the tubular net 10A is compressed into a wrinkle shape, the cylinder is formed. The nets 10 of the mesh 10A are intricately intertwined with each other.

Therefore, the net 10 which is three-dimensionally entangled with each other and which is in contact with the surface of the mounting portion 21 at a plurality of portions can hinder the movement of the pests. When the protective structure 30A as such an obstacle exists on the moving path, there is a case where the pest is folded back or a moving path is searched in the protective structure 30A so as to avoid the obstruction.

When the pest explores the moving path in the mesh structure 10B, since the protective structure 30A has a three-dimensional structure, the moving distance of the pest is smaller than that of the net 10 in the case of the plant 20 (for example, the net 10 is planar) When the winding portion 21 is wound once, it becomes long, and as a result, the residence time of the pest in the protective structure 30A becomes long. The mesh 10 contains an insecticidal active ingredient, and therefore, if the pest stays in the protective structure 30A for a long period of time, the pest is poisoned by the insecticidal active ingredient. As a result, for example, the pest falls.

In the method of protecting the plant described in the first embodiment, the net 10 is three-dimensionally attached to the plant 20 so that the protective structure 30A is formed, and it is difficult for the pest to pass through the protective structure 30A. Therefore, it is possible to more reliably reduce the case where the pest arrives at the protected portion 22. Further, even if the pest temporarily passes through the protective structure 30A, at least one of the destructive behavior and proliferation of the pest is inhibited. Therefore, the disaster caused by the pests of the protected portion 22 can be alleviated.

From the viewpoint of further reducing the pest disaster, the mesh structure 10B may be wound twice or more when the mesh structure 10B is wound around the plant 20. The reason is that the net 10 is further entangled with each other, and the protective structure 30A is likely to function as an obstruction for the pest, and in the case where the pest enters the protective structure 30A, the mesh structure 10B The retention time inside will also become longer and the pests will be easily poisoned.

For convenience of explanation, the three-dimensional structure formed by winding the mesh structure 10B around the mounting portion 21 is referred to as a protective structure 30A, and the protective structure 30A is composed of the mesh structure 10B. Therefore, the mesh structure 10B can also have the effect described for the protective structure 30A.

In the mesh structure 10B shown in FIG. 6, a string S for forming a protective structure is passed, and the string S may be taken out before the mesh structure 10B is attached to the mounting portion 21. In this case, the mesh structure 10B may be fixed to the mounting portion 21 by, for example, winding the mesh structure 10B around the mounting portion 21 and then suspending the overlapping portions, or folding one end into the winding portion. The mesh structure 10B is fixed, and may be fixed to the mounting portion 21 by using an adhesive tape, a binding machine, or the like, or the hook or the surface fastener may be attached to the mesh 10 in advance and fixed by the mesh. Further, in the step of forming the mesh structure 10B, the rope S may not be used.

[Second Embodiment]

A second embodiment of the method for protecting plants using the net 10 shown in Fig. 1 will be described with reference to Figs. 8 to 10 . In the second embodiment, the protective structure 30B is formed by the mesh 10 as shown in FIG.

First, in the mounting step of the plant protection method according to the second embodiment, as shown in FIG. 9, the net 10 is wound around the mounting portion 21 (around the center line of the mounting portion 21) to form a cylindrical net. 10C. In this case, the extending direction of the cylindrical net 10C coincides with the extending direction of the mounting portion 21. The fixing method of the net 10 when the tubular net 10C is formed can be set to be the same as in the case of the cylindrical net 10A.

Then, as shown by the arrow, the tubular net 10C is compressed in a bellows shape along its extending direction. Thereby, as shown in FIG. 10, the cylindrical net 10C has a wrinkle structure in which a mountain pleat line and a valley pleat line are repeated. Thus, the protective structure 30B shown in FIG. 8 is formed by forming the wrinkle structure.

In the case of the second embodiment, the net 10 is also in contact with the plant 20 at a plurality of locations. Further, since the tubular net 10C formed by winding the net 10 around the mounting portion 21 is wrinkled, the protective structure 30B has a wrinkle structure as a three-dimensional structure of the net 10. In FIG. 10, in order to explain the method of forming the protective structure 30B, the illustration is simplified, and since the mesh 10 has flexibility, the cylindrical mesh is used in the same manner as in the case of the tubular mesh 10A. When the 10C is compressed in a pleated shape, the nets 10 constituting the cylindrical net 10C are entangled with each other intricately. Therefore, it has the same operational effects as those in the case of the first embodiment.

That is, the protective structure 30B can be a more effective inhibitor for pests. Therefore, there is a case where the pests turn back when they reach the protective structure 30B. When the pest enters the protective structure 30B, since the protective structure 30B has a three-dimensional structure, the moving distance of the pest becomes longer when the net 10 is wound around the plant 20 in a plane, and as a result, the pest is protected. The residence time in the body 30B becomes long. Since the net 10 contains an insecticidal active ingredient, if the pest stays in the protective structure 30B for a long time, the pest is poisoned by the insecticidal active ingredient. As a result, for example, the pest falls.

Therefore, in the method of protecting a plant described in the second embodiment, if the net 10 is three-dimensionally attached to the plant 20 so as to form the protective structure 30B, it is difficult for the pest to pass through the protective structure 30B. Therefore, it is possible to more reliably reduce the case where the pest arrives at the protected portion 22. Further, even if the pest temporarily passes through the protective structure 30B, at least one of the destructive behavior and proliferation of the pest is inhibited. Therefore, the disaster caused by the pests of the protected portion 22 can be alleviated.

[Third embodiment]

In the third embodiment, the protective structure 30C as shown in Fig. 11 is formed. to In the mounting step of the method for protecting a plant according to the third embodiment, the protective structure 30C is formed by winding the net 10 around the mounting portion 21 at least once while twisting. Therefore, the protective structure 30C has a twisted structure as a three-dimensional structure. The wound web 10 may be fixed to the mounting portion 21 by, for example, a cord, or may be folded into the wound net 10 for fixing, or may be fixed by using an adhesive tape, a binding machine, or the like. The hook or face fasteners are attached to the mesh 10 and secured thereto by the mounting portion 21, or the ends of the wound mesh 10 may be joined to each other.

When the net 10 is wound around the mounting portion 21 twice or more, it may be superposed on the wound net 10 (at substantially the same position) or may be partially overlapped by the net 10 The position is shifted and the winding is performed in a spiral shape.

As described above, in the third embodiment, the net 10 is attached to the attachment portion 21 so as to form the protective structure 30C having the twisted structure by winding the net 10 around the plant while twisting. Thus, the web 10 interfaces with the surface of the plant 20 at a plurality of locations. Further, the protective structure 30C has an uneven shape with respect to the surface of the mounting portion 21.

Since the net 10 is three-dimensionally wound around the plant 20 by the twisting of the net 10, when the pest entering the protective structure 30C moves along the net 10, the staying time in the protective structure 30C becomes long. As a result, it is easily poisoned by the insecticidal active ingredient, and therefore it is difficult for the pest to pass through the protective structure 30C. Further, even if the pest temporarily passes through the protective structure 30C, at least one of the destructive behavior and proliferation of the pest is inhibited. Therefore, the protected portion 22 of the plant 20 can be protected from pests.

The net 10 is preferably wound twice or more from the viewpoint of further reducing the disaster caused by the pests of the protected portion 22. Thereby, the net 10 is more entangled with each other, and the protective structure 30C is more likely to become a barrier for pests. Further, the protective structure 30C has a more complicated three-dimensional structure by winding the net 10 twice or more. Therefore, the pest takes a longer time to move inside the protective structure 30C, and is easily poisoned by the insecticide active ingredient.

When the net 10 is attached to the mounting portion 21 while being twisted, the net 10 is wound while being fastened on one side, preferably loosely wound. Thereby, a moving space of pests is generated in the protective structure 30C, and the net 10 is easily complicatedly staggered. As a result, the pest entering the protective structure 30C is highly enclosed in the protective structure 30C, and is easily poisoned by the insecticidal active ingredient during the period of being closed as described above.

When the net 10 is twisted and attached to the mounting portion 21, it may be twisted twice or more until it is wound around the mounting portion 21.

The form in which the belt-shaped net 10 is wound while being attached to the plant 20 is described. For example, a three-dimensional mesh structure having a twist structure in which the net 10 is twisted in advance may be prepared. In this case, the mesh structure is attached to the mounting portion 21 by winding the mesh structure around the mounting portion 21 at least once. Since the mesh structure itself has a twisted structure, the protective structure 30C is formed by winding the mesh structure around the mounting portion 21.

Here, an example in which the belt-shaped net 10 shown in FIG. 1 is wound around the plant 20 is described. For example, the tubular net 10A shown in FIG. 5 may be wound around the mounting portion 21 while being twisted. The net 10 is attached to the mounting portion 21.

[Fourth embodiment]

In the fourth embodiment, the protective structure 30D as shown in Fig. 12 is formed. In this case, as in the first embodiment, the plant protection method has a preparation step of preparing the mesh structure 10B having the pleated structure as shown in Fig. 6 . Thereafter, the installation steps are implemented. In the mounting step, the mesh structure 10B is spirally wound around the plant 20 by spirally winding the string S passing through the mesh structure 10B to the attachment portion 21 in a spiral shape. The wound mesh structure 10B may be fixed to the mounting portion 21 by, for example, a string S.

In this case, since the mesh structure 10B having the pleated structure is used, the residence time of the pest entering the protective structure 30D in the protective structure 30D tends to be long. Further, the mesh structure 10B is spirally wound around the mounting portion The net 10 is attached to the plant 20 at the position 21, so that the pests moving in the longitudinal direction of the mounting portion 21 pass through the net 10 several times. As a result, the chance of exposure to the insecticidal active ingredient increases, so that the pest is easily poisoned. Therefore, it is difficult for the pest to reach the protected portion 22, so that the pest damage of the protected portion 22 can be alleviated.

When the mesh structure 10B is spirally wound around the mounting portion 21, the mesh structure 10B may be wound while being twisted. In this case, the three-dimensional structure of the protective structure 30D becomes more complicated, so that the pest disaster effect can be improved.

In the fourth embodiment, the mesh structure 10B is spirally wound around the mounting portion 21, and for example, the tubular net 10A before wrinkling may be wound in a spiral shape. In this case, from the viewpoint of improving the effect of the pest disaster, it is preferable that the tubular net 10A is wound in a spiral shape while being twisted.

[Fifth Embodiment]

In the first to fourth embodiments, a form of the net 10 shown in Fig. 1 is used, and as shown in Fig. 13, a mesh structure of a composite net formed by weaving a plurality of nets 10 can be used. Body 10D. FIG. 13 exemplifies a mesh structure 10D in which three nets 10 are woven in a three-strand knitting state. In the mesh structure 10D, the mesh structure 10D itself has a woven structure of a plurality of sheets 10, and has a three-dimensional structure in which a plurality of sheets 10 are entangled with each other.

Therefore, in the mounting step in the method of protecting the plant, the mesh structure 10D is wound at least once at the mounting portion 21 and the mesh structure 10D is attached to the mounting portion, thereby forming a woven structure having a three-dimensional structure. Protective structure. Therefore, it has the same operational effects as those of the first embodiment.

When the mesh structure 10D is wound twice or more at the mounting portion, it may be superposed on the wound mesh structure 10D (at substantially the same position) or wound on one side of the mesh structure 10D. A part of the overlap is wound in a spiral shape while staggering the position.

It is also possible to use the mesh structure 10D instead of the net 10 to perform the first to fourth embodiments. The method of protection of plants of the Ming Dynasty.

The mesh structure 10D may be formed by weaving a plurality of meshes 10 having the same mesh size (the size of the mesh), or may be formed by weaving a plurality of meshes 10 having different mesh sizes.

The embodiment of the mounting method of the various nets 10 has been exemplified above. When the net 10 is attached to the plant 20, it is only necessary to suppress the pest disaster in the plant 20. In this period, it is usually sufficient that the pest arrives before the protected portion 22. For example, if the protected portion 22 is the result portion, it may be before the result or after the result. Moreover, it may be before or after the production of pests.

The various embodiments of the present invention have been described, but are not limited to the various embodiments shown, and are intended to include all modifications within the meaning and scope of the claims.

In the description so far, the three-dimensional structure formed by attaching the net 10 to the mounting portion 21 has been described as a protective structure. In the state in which the net is attached to the plant, the protective structure may be a net structure having at least one piece of a thermoplastic resin and containing a network of insecticidal active ingredients, and the net forms a three-dimensional structure.

The web 10 containing the insecticidal active ingredient is not limited to the case where the insecticidal active ingredient is contained in the production step. For example, the web may be immersed in a chemical solution containing an insecticidal active ingredient or the insecticidal active ingredient may be sprayed or applied to the web 10 to contain an insecticidal active ingredient. Further, by forming the net 10 into a network structure, the mesh structure may be immersed in a chemical liquid containing the insecticidal active ingredient or the insecticidal active ingredient may be sprayed or applied to the network structure. It contains insecticidal active ingredients. Further, the net 10 is not limited to a thermoplastic resin. The raw material constituting the silk of the net 10 may also be a natural fiber. Examples of the natural fiber include pulp paper, cellulose, cotton, jute, and hemp natural fibers.

[Examples]

Hereinafter, a test example relating to a method of protecting a plant using a net will be described. this invention It is not limited to the test examples 1, 2, and 3 to be described below.

[Test Example 1]

First, the net N used in Test Example 1 will be described. The net N is a net made of a thermoplastic resin warp knitted by Raschel. The net N is in the form of a sheet. Net N contains permethrin and pyriproxyfen as insecticidal active ingredients. The blending ratio of permethrin and pyriproxyfen is 2:1. The mesh shape of the mesh N is substantially a regular hexagon. The diagonal of the mesh of the net N is 4 mm in length.

In the test examples, the test was carried out using the test apparatus shown in Fig. 14. As shown in Fig. 14, the talc powder is applied to the inside of the opening portion to prevent the plastic cups 41 and 42 from escaping from being disposed apart, and the foam having a width of 2.5 cm, a length of 5 cm, and a height of 20 cm is erected in each of the plastic cups 41 and 42. Corner posts 43, 44 made of styrene. The distance between the tops (free ends) 43a, 44a of the corner posts 43, 44 is set to 30 cm. Further, a wooden cylinder 45 having a length of 45 cm and a diameter of 2 cm is placed between the tops 43a and 44a of the corner posts 43 and 44. The center portion of the cylinder 45 is defined as a mounting portion 45a of the net.

As a method of mounting the net N to the mounting portion 45a, the following three mounting methods are employed.

(Installation method 1)

As shown schematically in Fig. 15(a), a net N of 3 cm width (length in the short side direction) is wound around the mounting portion 45a twice. The length of the portion around which the net N is wound in the direction in which the cylinder 45 extends is about 3 cm.

(Installation method 2)

As shown schematically in Fig. 15(b), the net N of 3 cm width (length in the short side direction) was spirally wound one turn across about 9 cm without overlapping each other. The length of the portion around which the net N is wound in the direction in which the cylinder 45 extends is about 9 cm.

(Installation method 3)

The net N was sewn into a cylindrical shape to form a tubular net N1 having a width of 3 cm and a length of 15 cm. The width of the cylindrical net N1 means the width when the tubular net N1 is flattened flat. Then make The rope passes through the cylindrical net N1, and as described in the first embodiment, the tubular net N1 is compressed in a bellows shape along the extending direction of the tubular net N1, and then wound around the mounting portion 45a, thereby forming a pattern as shown in FIG. The protective structure 30A composed of the net N as shown in (c). This mounting method 3 corresponds to the first embodiment.

Regarding the test, in the case where the net N was attached to the mounting portion 45a of the cylinder 45 by the above-described mounting methods 1 to 3 in the test apparatus shown in Fig. 14, 20 live ants were released on the top 43a of the corner post 43. Thereafter, the number of heads passing through the net N is counted toward the top 44a side of the corner post 44. The count was set to 0 minutes when the ants were released, and the counts were performed at intervals of 15 minutes, 30 minutes, 60 minutes, 90 minutes, and 120 minutes, respectively. At the same time, a white pad 46 is placed on the lower side of the cylinder 45, and the number of fallen ants is also counted. The measurement timing of the count is the same as when the number of passes is counted. The test was carried out twice for each of the mounting methods 1 to 3.

The live ant used in the test was a small family ant (scientific name: Ochetellus glaber, body length 2 mm).

In the above test, the ratio (pass rate) of the ants of the net N installed by the mounting methods 1 to 3 is as shown in Table 1. The ratio (drop rate) of the ants dropped during the process of using the net N installed by the mounting methods 1 to 3 is as shown in Table 2. The pass rate is the ratio of the total number of ants passing through the total number of ants at the time of the measurement sequence of the count (15 minutes, 30 minutes, 60 minutes, 90 minutes, 120 minutes). The drop rate is the ratio of the total number of ants dropped at the point of measurement of each count to the total number of ants. The test system was carried out twice for the mounting methods 1 to 3, so the total number of ants passed or dropped at each measurement sequence was 2 trials, and the total number of ants was set to 40 (20 heads × 2).

As shown in Table 1, it is known that the mounting method 3 of the method of mounting the net N described in the method for protecting plants according to the first embodiment suppresses the passage of 90% or more, and is compatible with other mounting methods 1 and 2. Than, the passage of ants is extremely suppressed. Further, as understood from Table 2, it was found that in the mounting method 3, the drop rate of the ants, that is, the ant poisoning rate due to the insecticidal active ingredient, was also improved as compared with the mounting methods 1 and 2.

Therefore, it can be understood that the net 10 can be used to form a protective structure for the plant by the mounting method 3 to reduce the pest disaster.

[Test Example 2]

Next, the test results in the actual farm are explained. In Test Example 2, the same network N as Test Example 1 was used. The test was carried out on a test farm where the net N was installed on the apple trees in the test farm.

Specifically, as shown in FIG. 16, the net N is attached to the trunk of the apple tree 50. Figure 16 is a schematic view for explaining the test method. The mounting position 51 of the net N is set to a position approximately 1 m from the ground. In Fig. 16, the mounting position 51 is shaded to indicate the mounting position 51. The catcher 60 is suspended above the installed net N. The trap 60 uses a PET bottle (280 ml) 61 to which the lure bait 62 is added. The lure bait 62 is a mixture of honey, syrup and water. The ratio of the volume of honey, syrup and water (ml) is honey: syrup: water=1: 1:2. The volume of the lure bait 62 is 50 ml. Openings (1.5 cm × 4 cm) were formed on both sides of the PET bottle 61, respectively.

In Test Example 2, the following mounting method 4 and mounting method 5 were employed as the mounting method of the net N.

(Installation method 4)

The mounting method 4 is the same as the mounting method 1 except that the size and winding amount of the net N are different. Specifically, a 20 cm wide net N was wound around the trunk for 5 turns.

(Installation method 5)

The mounting method 5 is the same as the mounting method 3 except that the size of the tubular net N1 in which the net N is sewn into a cylinder is different. Specifically, as the tubular net N1, a tubular net N1 having a width of 20 cm and a length of 2 m is prepared. The width of the cylindrical net N1, as explained in Test Example 1, means the width when the tubular net N1 is flatly flattened. Then, the rope is passed through the cylindrical net N1, and the tubular net N1 is compressed in a bellows shape along the extending direction of the tubular net N1 as described in the first embodiment, and then wound, as in the mounting method 3. The protective structure 30A composed of the mesh N is formed in the ground. This mounting method 5 corresponds to the first embodiment.

At the time of the test, the net N was attached to each of the two apple trees 50 by the above-described mounting method 4. Similarly, the net N is attached to each of the two apple trees 50 by the above-described mounting method 5. The lure bait 62 is sprayed to the ground to the position of the trap 60 in advance, and the test is started after confirming that the ants are attracted to the trap 60. The lure bait 62 is appropriately added so as not to dry. Further, in Test Example 2, the trap 60 was suspended in the same manner as the apple tree 50 in which the net N was not wound, and the test was carried out in the same manner as in the case where the net N was wound.

The live ants used in the test were small family ants (scientific name: Ochetellus glaber, body length 2 mm) and Japanese hair ants (scientific name: Lasius japonicus, body length 5 mm).

The trap 60 was recovered every 1, 2, 3, and 4 weeks after the start of the test. The number of the small ants and Japanese hair ants captured by the trap 60 is counted. The count results are shown in Table 3. The number of ants heads shown in Table 3 is the sum of the results for each of 1, 2, 3, and 4 weeks after the start of the test. Again, use The same installation method installed the net N on two trees 50. Therefore, the number of the ants shown in Table 3 indicates the total number of ants captured by the trap 60 of the two trees 50 in which the net N is mounted by the mounting method 4, and the net of each of the mounting methods 5 is installed. The total number of ants captured by the capture device 60 of the two trees 50 of N, and the total number of ants captured by the catcher 60 of the two trees 50 that do not have the net N installed.

In the mounting method 5, as shown in Table 3, the number of ants captured by the trap 60 is extremely reduced as compared with the case of the mounting method 4.

Therefore, it can be understood that the net 10 can be used to form a protective structure for the plant by the mounting method 5 to reduce the pest disaster.

[Test Example 3]

Next, the test results of the trees cultivated by the container will be described. In Test Example 3, the same network N as Test Example 1 was used. The test was carried out on a test farm, and the net N was installed in a container in a plastic greenhouse to cultivate citrus saplings.

Specifically, as shown in Fig. 17, the net N is attached to the trunk of the citrus young tree 70 cultivated in the container. Figure 17 is a schematic view for explaining the test method. The mounting position 71 of the net N is set to a position approximately 20 cm from the ground. In Fig. 17, in order to indicate the mounting position 71, the mounting position 71 is shaded. In order to prevent the ants from escaping, the adhesive (muthatin) is applied to the lower portion of the installed net N in a seamless manner in the circumferential direction of the trunk. The position where the adhesive (viscose) is applied is shown in Fig. 17 as the coating position 72.

In Test Example 3, the following mounting method 6 and mounting method 7 were employed as the mounting method of the net N.

(Installation method 6)

The mounting method 6 is the same as the mounting method 1 except that the size and winding amount of the net N are different. Specifically, a 5 cm wide net N was wound around the trunk for 3 turns.

(Installation method 7)

The mounting method 7 is the same as the mounting method 3 except that the size of the tubular net N1 in which the net N is sewn into a cylinder is different. Specifically, a tubular net N1 having a width of 5 cm and a length of 30 cm was prepared as the tubular net N1. The width of the cylindrical net N1, as explained in Test Example 1, means the width when the tubular net N1 is flatly flattened. Then, the rope is passed through the cylindrical net N1, and as described in the first embodiment, the tubular net N1 is compressed in a bellows shape along the extending direction of the tubular net N1, and then wound around the mounting position 71, thereby In the mounting method 3, the protective structure 30A composed of the net N is formed in the same manner. This mounting method 7 corresponds to the first embodiment.

At the time of the test, the net N was attached to the young tree 70 of citrus by the above-described mounting method 6. Similarly, the net N is attached to the young tree 70 of citrus by the above-described mounting method 7. Twenty live ants were released to the trunk between the installation position 71 of the net N and the application position 72 of the ant escape prevention adhesive (viscose), and counted by the number of nets N within 30 seconds.

The live ants used in the experiment were double-needle-cutting leaf-cutting ants (scientific name: Pristomyrmex punctatus, body length 3 mm).

The count results of the number of passes through the net N are shown in Table 4.

In the mounting method 7, as shown in Table 4, the number of passes of the ants is extremely reduced as compared with the case of the mounting method 6.

Therefore, it can be understood that the net 10 can be installed on the plant by using the mounting method 7. Protect the structure and reduce pests.

21‧‧‧Installation site

30A‧‧‧Protection structure

Claims (14)

A method for protecting a plant, which is a method for protecting a plant from a pest, and having a method of attaching at least one piece of the insecticidal active ingredient to the plant in such a manner that the net forms a protective structure having a three-dimensional structure. . The method for protecting a plant according to claim 1, wherein the above-mentioned three-dimensional structure is a pleated structure or a twisted structure of the above-mentioned net or a plurality of woven structures of the above-mentioned net. The method for protecting a plant according to claim 1 or 2, wherein the protective structure has a concavo-convex shape with respect to a surface of a mounting portion of the net in the plant. The method for protecting a plant according to any one of claims 1 to 3, wherein the net is a tubular net, and in the above-mentioned mounting step, the bellows is compressed in the extending direction of the tubular net. The tubular net of the pleated structure is wound around the attachment portion of the net in the plant to form the protective structure. The method for protecting a plant according to any one of claims 1 to 3, wherein in the mounting step, the net is wound around the attachment portion of the net in the plant to form a tubular net, and then in the cylindrical shape The tubular net is compressed in a bellows shape in the extending direction of the net, thereby forming the protective structure having a wrinkle structure. The method for protecting a plant according to any one of claims 1 to 5, wherein the insecticidal active ingredient is at least one selected from the group consisting of a pyrethroid insecticide and an insect growth controlling agent. The method for protecting a plant according to any one of claims 1 to 6, wherein the net is made of a thermoplastic resin. The method for protecting a plant according to any one of claims 1 to 7, wherein in the above-described mounting step, the net is installed in the plant in a moving path toward a pest that must be protected from pests from being protected from pests. on. The method for protecting a plant according to any one of claims 1 to 8, wherein the installation site of the net is at least one of a stem, a stem, a pseudo stem, a branch, a petiole and a flower shaft of the plant. A network structure for protecting plants from pests and having at least one net comprising insecticidal active ingredients, the net forming a three-dimensional structure. A mesh structure according to claim 10, wherein said three-dimensional structure is a pleated structure or a twisted structure of said net or a plurality of woven structures of said net. The mesh structure according to claim 10 or 11, wherein the net is a tubular net, and the three-dimensional structure is a wrinkle structure in which the tubular net is compressed in a bellows shape with respect to an extending direction of the tubular net. The reticulated structure according to any one of claims 10 to 12, wherein the insecticidal active ingredient is at least one selected from the group consisting of a pyrethroid insecticide and an insect growth controlling agent. The mesh structure according to any one of claims 10 to 13, wherein the mesh is made of a thermoplastic resin.