JP2004180616A - Film for inhibiting behavior of insect pest and method for inhibiting behavior of insect pest - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a film and a method for simply inhibiting various behaviors of insect pests by a reduced agrochemical-using system or an agrochemical-free system. <P>SOLUTION: The film for inhibiting the behaviors of insect pests blocks ≥ 90% of electromagnetic wave having shorter wavelengths than nearly 500 nm and transmits ≥70% of light having wavelengths from nearly 500 nm to nearly 650 nm. The method for inhibiting behaviors of insect pests comprises keeping electromagnetic wave having wavelengths from nearly 200 nm to nearly 500 nm in a power of ≤0.05 W/m<SP>2</SP>as a whole and keeping light having wavelengths from nearly 500 nm to nearly 650 nm in ≥1.0 lux as a whole at night in a plant culturing area. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pest behavior suppression film and a behavior suppression method.
[0002]
[Prior art]
Pests are great enemies in the cultivation of various plants. Therefore, it is not an exaggeration to say that the first task in agriculture is how to control these pests.
Conventionally, insecticides are mainly used to control pests, and insecticides are sprayed at the stage of larvae hatched from eggs and adult adults emerged from pupae (the insecticide is difficult to work on eggs and pupae). We try to control adults.
[0003]
In many cases, it is turned off to keep out pests that have the property of gathering under nighttime lighting (especially ultraviolet light).
[0004]
[Problems to be solved by the invention]
However, it is almost impossible to kill all the pests of interest. This is because it is actually difficult to apply insecticide to all pests unless the insecticide is applied in a considerably large amount (more than a predetermined amount).
Also, a method of preventing the spawning itself has been considered. However, there seems to be no completely successful method.
[0005]
Recently, the use of chemical pesticides has been shunned from problems such as environmental pollution, and there has been a demand for a reduced pesticide-free / pesticide-free system as much as possible.
[0006]
[Means for Solving the Problems]
In view of the above situation, the present inventor has completed the behavior control film and behavior control method of the pest of the present invention as a result of earnest research, and the feature thereof is that, in the film, fluorescent light is used. It is used as a cover. Electromagnetic waves having a wavelength shorter than about 500 nm block 90% or more of the electromagnetic waves, and light having a wavelength from about 500 nm to about 650 nm is transmitted through 70% or more. In the method, the electromagnetic wave having a wavelength of about 200 nm to about 500 nm at night in the plant cultivation area is almost 0.05 W / m ² (watt per square meter) or less, and the wavelength of about 500 nm to about 650 nm. Is a method for suppressing the behavior of pests that keeps the total light at 1.0 lux or more as a whole, wherein the film according to claim 1 is wound around a fluorescent lamp. Lies in adjusting the intensity of the wave.
[0007]
The behavior suppression in the present invention refers to copulation suppression, flying suppression, sucking suppression and the like. In other words, it suppresses copulation and spawning, keeps them from approaching, does not suck juice of fruits, and the like.
[0008]
The point of the film of the present invention is that 90% or more of the electromagnetic wave having a wavelength shorter than around 500 nm is blocked, and 70% or more of the electromagnetic wave having a longer wavelength than around 500 nm is transmitted. Here, the vicinity of 500 nm is about 470 nm to 520 nm, and cuts electromagnetic waves (visible light, ultraviolet light, and the like) less than 90 nm by 90% or more. Thus, there is a range from 470 nm to 520 nm because an organism is a partner.
The reason for cutting below this is that many pests fly toward the ultraviolet rays, so that such pests are not attracted.
Further, light having a wavelength of about 500 nm to about 650 nm transmits 70% or more of the light. This is because many nocturnal pests mate during the night and lay eggs (also sucking and other actions). Further, it seems that day or night is determined based on the presence or absence of such long wavelength light. Therefore, research has shown that if this long-wavelength light is present, the illusion of daytime and no mating or the like will occur.
[0009]
Examples of pests that were effective in the experiment include copulation suppression, Japanese armyworm, Spodoptera litura, Helicoverpa armigera, Spodoptera litura,
As the flying suppression, Benifukinomeiga, Kokurohimehamaki, Awanomeiga, Chanohosoga, Chabanea stinkbug, Tamanagininuwaba, and Nashihimeshiningu sucking suppression include Akebikonoha, Akaeguriba, Himeegliba and the like.
These are also not limited since some of them have a plurality of suppressing effects.
[0010]
It is sufficient if there is a device that generates such special electromagnetic waves. However, since it is expensive and burdens ordinary farmers, the present inventor has attempted to achieve this with a film that covers ordinary fluorescent lamps and the like. It was done.
[0011]
Such an effect of blocking at a specific wavelength or less and not blocking at a specific wavelength or more is performed by a pigment or a dye. The types of pigments and dyes are free, and it is sufficient if such effects are provided. Of course, a plurality of them may be mixed.
In experiments by the inventor, azo-based yellow was preferred, and among them, bisazo-based was more preferred.
[0012]
Such a pigment or dye may be kneaded, dyed, or coated with the film.
[0013]
The film body may be transparent as long as it has no problem in transmission of long-wave electromagnetic waves of about 470 nm to 520 nm or more, such as PET (polyester resin), PC (polycarbonate resin), MS (styrene acrylic resin). May be something.
[0014]
This film may be heat set. Heat setting refers to forming a sheet into a predetermined state by heating. The heating temperature is usually about 120 to 150 ° C. Further, the predetermined shape is preferably a cylindrical shape slightly thinner than the fluorescent lamp tube. The manufacturing method is free, for example, by wrapping a plastic sheet around an object slightly thinner than a fluorescent lamp tube and heating, or by heating the wrapped object in a tube in that state. A known method may be used.
[0015]
By heat setting in this way, it can be easily wound around the fluorescent lamp tube, and almost no work is required. Of course, it does not drop by itself, but may be fixed with an adhesive tape or the like for safety.
Alternatively, it may be wound around a fluorescent lamp tube in advance by a shrink method, adhesion, adhesive tape fixing, or the like. In this case, it is unnecessary to wind the film only by replacing the fluorescent lamp tube.
[0016]
Next, a behavior suppressing method will be described.
This is to suppress the copulation and spawning of pests in the cultivation area by using the film according to claim 1, and the electromagnetic wave having a wavelength of about 200 nm to about 500 nm in the plant cultivation area at night is almost zero. 0.05 W / m ² or less, and a light having a wavelength of from about 500 nm to about 650 nm is a method for suppressing the action of pests, which is maintained at 1.0 lux or more as a whole. It adjusts the strength of the electromagnetic wave by winding.
Here, the meaning near the wavelength of 200 nm is about 180 nm to 220 nm, the meaning near the wavelength of 500 nm is about 470 nm to 520 nm, and the width is as described above.
The reason for setting the wavelength to 200 nm to 500 nm is that many insects gather in this range of electromagnetic waves.
The term “substantially the entirety” as used herein refers to substantially the entire area of the plant cultivation area, and does not mathematically mean that there is no single shadow and that all corners are not equal. Further, the total value of electromagnetic waves having a wavelength of about 200 nm to about 500 nm is, for example, 0.05 W / m ² or less in an electromagnetic wave intensity measurement having a width of 10 nm.
The reason for setting it to 0.05 W or less is that if it is 0.05 W or more, many pests are attracted.
In addition, the reason why the light having a wavelength of about 500 nm to about 650 nm is set to 1.0 lux or more is that light having a wavelength of less than 1.0 lux acts to mate.
[0017]
In the present invention, the difference in the degree of irradiation to the cultivation area due to the difference in the wavelength of the electromagnetic wave is performed using a cover film without using a special device. This is because it is simple, inexpensive, and the film also prevents scattering of the fluorescent lamp tube.
[0018]
The method of the present invention may be used in combination with another behavior suppressing method. For example, a sex pheromone release method.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings.
FIG. 1 is a perspective view showing an example of the sheet 1 of the present invention. In this example, the main material is PET, which is coated with a pigment (bisazo yellow). Since the area near ultraviolet rays has been cut, it appears yellow to human eyes.
By heat setting, it is wound into the shape of being wound two or three times so that the inner diameter becomes about 2 cm. It is for a fluorescent lamp tube 2 having a tube diameter of 32.5 mm. This may be wound around the fluorescent light tube 2 or a fluorescent light tube may be inserted therein. What is necessary is just to wind like FIG.
[0020]
FIG. 3 is a schematic plan view of an orchard implementing the method of the present invention. As shown in the figure, twelve fluorescent lamps 2 were installed in a range of 50 m × 20 m (10 a). The film of the present invention was wound around each. The fluorescent lamp has a normal 40 W (white or daylight).
When this was turned on, 1 lux or more could be secured almost everywhere. Of course, the area close to the fluorescent light is very bright, but almost 200 nm to 500 nm is blocked, so that almost no flying insects with phototaxis gather.
Since electromagnetic waves (light) having a wavelength of 500 nm to 650 nm were secured at approximately 1.0 lux, the cutworm, etc. hardly laid eggs.
[0021]
【The invention's effect】
The film and the behavior suppressing method of the present invention have the following great advantages.
(1) When the film of the present invention is used, the same light emission characteristics as those of such a fluorescent lamp tube can be obtained without using an expensive special fluorescent lamp tube.
(2) It is inexpensive.
(3) There is no environmental problem because pests can be eliminated without using pesticides.
(4) Since the ultraviolet rays are blocked, pests attracted to the ultraviolet rays can be eliminated, and pests that copulate in a dark place are suppressed, so that the effect is large.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a sheet 1 of the present invention.
FIG. 2 is a perspective view showing a state where an example of the sheet 1 of the present invention is wound.
FIG. 3 is a schematic plan view of an orchard implementing the method of the present invention.
[Explanation of symbols]
1 Sheet 2 of the present invention Fluorescent tube

Claims (3)

It is used to cover fluorescent lamps. Electromagnetic waves with wavelengths shorter than about 500 nm cut off 90% or more of them, and light with wavelengths from about 500 nm to about 650 nm are transmitted through 70% or more. Pest behavior control film. The pest behavior suppressing film according to claim 1, wherein the film is heat-set in a tubular shape so as to be naturally wound around the fluorescent light tube. At night in the plant growing area, the electromagnetic wave having a wavelength of about 200 nm to about 500 nm is almost 0.05 W / m ² (watt per square meter) or less as a whole, and the light having a wavelength of about 500 nm to about 650 nm is almost entirely emitted. A method for suppressing copulation of pests, which is maintained at 1.0 lux or more, wherein the intensity of electromagnetic waves is adjusted by wrapping the film according to claim 1 around a fluorescent lamp.

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