JP2007143429A - Method for pest control of diurnal insect and apparatus for pest control of diurnal insect - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for pest control of a diurnal insect, by which influence on dark period-light period cycles awaked by plants, consequently influence on their growth, can be reduced, even when the diurnal insects are irradiated with activating light and further with luring light to control the diurnal insects, and to provide an apparatus for pest control of a diurnal insect, used therefor. <P>SOLUTION: In the method for pest control of a diurnal insect, having a process for irradiating a region 4 for growing plants with light for activating the diurnal insects, the process for irradiating the region with the light for activating the diurnal insects has a illuminance 4 of ≥1 lx to irradiate the region to grow the plants, starts the irradiation when the illuminance of the region 4 for growing the plants is ≤1 lx, or has a illuminance of the region 4 for growing the plants of ≤1 lx, when the irradiation is finished. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a diurnal pest control method and a diurnal pest control apparatus using the diurnal pest control method, which include a step of irradiating light for activating diurnal agricultural pests to an area where plants are grown.

  2. Description of the Related Art Conventionally, a technique for attracting agricultural pests by irradiating insect light having a specific wavelength, for example, ultraviolet rays, in the area where the plant is grown, and capturing and controlling the insect pests is known. About this, since the effect of attracting light is remarkable when there is little disturbance due to natural light, it is often irradiated with attracting light at night, and as a result, nocturnal pests were controlled among agricultural pests. .

  On the other hand, in order to control diurnal pests by such a technique, it is conceivable to activate diurnal pests at night when there is little disturbance due to natural light, and then irradiate insect light.

  Here, the technique described in Japanese Patent Application Laid-Open No. 2005-151868 (Patent Document 1) is useful for activating diurnal pests at night.

This activates diurnal insects by irradiating visible light with a wavelength of 500 to 700 nm at night.
Japanese Patent Laying-Open No. 2005-151868

  However, in the diurnal pest control method that irradiates light that activates diurnal pests at night, the process of irradiating light that activates diurnal pests covers the entire period when the plant is in the dark period. If this is the case, the period of the dark period light period perceived by the plant may be distorted, which may adversely affect its growth.

  The present invention has been made in view of the above-mentioned background art, and the problem thereof is a case in which diurnal pests are controlled by irradiating irritating light after irradiating light that activates diurnal pests. However, it is an object to provide a diurnal pest control method and a diurnal pest control apparatus using the same, which can reduce the period of the dark light period perceived by the plant and, consequently, the effect on its growth.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a diurnal pest control method comprising a step of irradiating light for activating diurnal pests to an area where plants are grown. The step of irradiating the light that activates the vegetative pest starts irradiation when the illuminance of the area where the plant is grown by irradiation is 1 lx or more and the illuminance of the area where the plant is grown is 1 lx or less. When the irradiation is completed, the illuminance of the area where the plant is grown becomes 1 lx or less.

  The invention described in claim 2 is characterized in that the product of the illuminance and the cumulative irradiation time of the area where the plant is grown by the light that activates the diurnal pest is 150 lx hours or less. The diurnal pest control method described.

  The invention described in claim 3 is characterized in that the irradiation is performed a plurality of times, and the interval between the end of irradiation and the start of the next irradiation is within 0.5 hours. The diurnal pest control method according to claim 1.

  The invention described in claim 4 has an illumination device that irradiates light for activating diurnal pests in a region where plants are grown, and the diurnal pest control method according to claims 1 to 3. It is a diurnal pest control device characterized by being used.

  Here, diurnal pests are agricultural pests that are active mainly for seeking food and mating in the daytime and resting during the night, such as whiteflies such as on-site whiteflies and legumes. And the thrips such as Citrus thrips.

  The light that activates diurnal pests refers to light that includes a wavelength range of 300 to 600 nm from the ultraviolet region to the visible light region according to the spectral sensitivity of the eyes of agricultural pests (see FIG. 1).

  As the product of illuminance and accumulated irradiation time, lx is used as the value of illuminance, and time is used as the value of accumulated irradiation time, and these are obtained as the products. It is assumed that it is obtained as an integral value during irradiation (for example, in FIG. 6, the product of the average value of the minimum illuminance and maximum illuminance during irradiation and the irradiation time).

  According to the invention described in claim 1, the step of irradiating with the light that activates the diurnal pest is to increase the illuminance of the region where the plant is grown by irradiation to 1 lx or more and to grow the plant. The process of irradiating with light that activates diurnal pests since the illuminance of the region where the plant is grown becomes 1 lx or less when the irradiation is started or the irradiation is terminated when the illumination of the region is 1 lx or less. Because the plant is part of the dark period, it is less affected by the light period of the dark period perceived by the plant, reducing adverse effects on growth and The capture rate can be improved.

  Here, the dark period is basically the period from sunset to dawn in the case of outdoor fields and agricultural house cultivation, and in the case of a plant factory using artificial light, It shows the period when the maximum horizontal illuminance at the top is 1 lx or less.

  In order to further reduce the adverse effects on plant growth, it is desirable not to use light in the wavelength region of 600 to 700 nm, which is a red region that hardly contributes to the activity of diurnal pests.

  According to the invention described in claim 2, since the product of the illuminance and the cumulative irradiation time of the area where the plant is nurtured by the light that activates the diurnal pest is 150 lx hours or less, it is particularly short day such as carnation. For plants, adverse effects on growth can be reduced.

  According to the invention described in claim 3, the irradiation is performed a plurality of times, and after the irradiation is completed, the interval until the next irradiation is started is within 0.5 hours. In order to reduce adverse effects on growth and to concentrate the activity of diurnal pests in a short period of time, the catch rate of diurnal pests by a trapping device is also concentrated in a short period of time. Be made.

  According to invention described in Claim 4, it has an illuminating device which irradiates the light which activates a diurnal pest to the area | region which grows a plant, The diurnal pest control method of Claims 1-3 Therefore, it becomes easy to control the irradiation of light for activating diurnal pests and the irradiation of insect light.

  As an embodiment of the present invention, a diurnal pest control method and diurnal pest control apparatus 1 corresponding to claims 1 to 3 of the present application will be described with reference to FIG. In FIG. 2, the plant is omitted.

  As shown in FIG. 2, the diurnal pest control apparatus 1 of the present embodiment includes an illumination device 2 that irradiates light for activating diurnal agricultural pests onto a region 4 where plants are grown.

  A general-purpose agricultural crop can be used as the plant. For example, tomatoes, cucumbers, eggplants, peppers, watermelons, melons, strawberries, etc. for fruit vegetables, radishes, carrots, burdock, garlic, ginger, etc. for root vegetables, potatoes, sweet potatoes, taros, yam, lotus roots, etc. For leafy vegetables, lettuce, cabbage, Chinese cabbage, spinach, perilla, etc. For beans, soybeans, red beans, green beans, peanuts, peas, broad beans, etc. For fruit trees, mandarin oranges, oranges, apples, pears, peaches, persimmons, etc. Then there are roses, statice, begonia, tulips, chrysanthemums, carnations and so on. Rice plants and the like are also plants that can be controlled to flower by day length, and are therefore suitable as target plants of the present invention.

  The area | region 4 which grows a plant means the area | region where the diurnal pest which is a control object may exist, and is an area | region including the culture medium surface in which a plant is planted at least. If there is a possibility that diurnal pests exist, the culture medium surface covered with plants and the cultivation container 41 in which the culture medium is accommodated may be included.

  Here, the medium is not limited to soil, and a general-purpose one such as an artificially made resin plant support used for hydroponics, rock wool, coco, or fired foamed granular stone can be used.

  The lighting device 2 measures an illuminance in an activation light source 21 that irradiates light for activating diurnal pests in a region 4 for growing plants, a control unit 22 that controls lighting thereof, and a region 6 for growing plants. Illuminance meter 23, 24, 25, 26, 27.

  The activation light source 21 can be a general-purpose light source such as an incandescent lamp, a discharge lamp, a light emitting diode, or organic electroluminescence. In this embodiment, a fluorescent lamp is used, and as described above, the wavelength region is 400 to 600 nm and the wavelength peak is 500 to 550 nm.

  Between the activation light source 21 and the region 4 where the plant is grown, an optical member for irradiating the entire region or improving the optical uniformity is appropriately provided. The size of the activation light source 21, the number of installed light sources, the distance from the culture medium, and the like can be arbitrarily set depending on the size of the region 4 where the plant is grown.

  The control unit 22 includes a microcomputer as a main element, and controls the lighting of the activation light source 21 based on plant varieties, measurement results of illuminance meters 23, 24, 25, 26, and 27 described later, and the like.

  As the illuminance meters 23, 24, 25, 26, and 27, general-purpose ones can be used, and the illuminance meters 23, 24, 25, 26, and 27 are installed at regular intervals in the region 4 where the plants are grown. The measurement result is fed back to the control unit 22.

  The illuminating device 2 is installed so that the irradiation surface of the illuminating device 2 faces directly above the region 4 where the plant is grown with respect to the frame 5 formed in a substantially cubic ridgeline shape so as to cover the cultivation container 41.

  Further, the diurnal pest control apparatus 1 is provided with insect attracting light sources 31 and 32.

  As the attracting light sources 31 and 32, general-purpose light sources such as ultraviolet lamps and black lights can be used. In this embodiment, an ultraviolet lamp is used, and as described above, the wavelength peak is about 360 to 420 nm and the wavelength peak is around 360 nm.

  Between the attracting light sources 31 and 32 and the region 4 where the plant is grown, an optical member for irradiating the entire region or improving the uniformity is appropriately provided. In addition, the size, number of installations, distance from the culture medium, and the like of the attracting light sources 31 and 32 can be arbitrarily set depending on the size of the region 4 where the plant is grown, the type of diurnal pests assumed, and the like.

  A translucent adhesive member (not shown) is provided on the irradiation surface of the attracting light sources 31 and 32, and the attracted diurnal pest is supplemented by this.

  In the present embodiment, the insect light source 2 is used for attracting and capturing agricultural pests. A general purpose one can be used.

  Here, as Examples 1 to 10 and Comparative Examples 1 to 6 of the present invention, the evaluation results of the insect attracting property and the breeding situation when each lighting pattern shown in FIGS. .

  Each lighting pattern shown in FIGS. 3 to 12 has 24 hours as one cycle. The first 12 hours are in the light period, and the latter 12 hours are in the dark period (the illuminance is 1 lx or less when there is no irradiation). It is set. In addition, the scale of a vertical axis | shaft and a horizontal axis is inaccurate, and illumination intensity and accumulation lighting time shall follow the conditions of Table 1.

  Here, the attractiveness was evaluated in three stages according to the degree to which diurnal pests acted by recognizing the artificial light irradiated during the dark period.

  Further, the plant growth status was evaluated in three stages according to the degree of occurrence of flower bud differentiation.

  As shown above, as is clear from the results of Examples 1 to 10 and Comparative Examples 1 and 5, according to this embodiment, the step of irradiating light that activates the diurnal pest The illuminance 4 of the area to grow is set to 1 lx or more, and when the illuminance 4 of the area to grow the plant is 1 lx or less, the irradiation 4 starts at the end of the irradiation or the illuminance 4 of the area to grow the plant is 1 lx Since the process of irradiating light that activates diurnal pests is a part of the period when the plant is in the dark period, the period of the dark period and the light period that the plant is aware of is affected. The effect of catching diurnal agricultural pests with an insect trap can be improved while reducing adverse effects on growth.

  Moreover, as is clear from the results of Examples 1 to 10 and Comparative Examples 2, 3, 4, and 6, according to this embodiment, the illuminance of the region 4 for growing the plant by the light that activates the diurnal pests And the cumulative irradiation time is 150 lx hours or less, so that adverse effects on growth can be reduced particularly for short-day plants such as carnations.

  Further, as is apparent from the results of Examples 5 and 10 and Comparative Examples 4 and 6, according to this embodiment, irradiation is performed a plurality of times, and after the irradiation is completed, the next irradiation is started. Since the time interval is within 0.5 hours, it reduces the adverse effects on growth on short-day plants such as chrysanthemums, and concentrates the activity of diurnal pests in a short time. The catch rate of diurnal agricultural pests can be concentrated and improved in a short time.

  Moreover, as is clear from the results of Examples 1 to 10 and Comparative Examples 1 to 8, according to the present embodiment, the illumination device 2 that irradiates the region 4 where the plant is grown with light that activates the diurnal pests. Since the diurnal pest control method according to claims 1 to 3 is used, it is easy to control the irradiation of the diurnal pest and the irradiation of the insect light.

Spectral sensitivity of eyes typical of diurnal pests The perspective view of the diurnal pest control apparatus in one Embodiment of this invention Lighting schedule in one embodiment of the present invention Lighting schedule in one embodiment of the present invention Lighting schedule in one embodiment of the present invention Lighting schedule in one embodiment of the present invention Lighting schedule in one embodiment of the present invention Lighting schedule in comparative example of the present invention Lighting schedule in comparative example of the present invention Lighting schedule in comparative example of the present invention Lighting schedule in comparative example of the present invention Lighting schedule in comparative example of the present invention

Explanation of symbols

1 Diurnal pest control device 2 Lighting device 4 Plant growing area

Claims (4)

  A diurnal pest control method comprising a step of irradiating light for activating diurnal pests to a region where the plant is grown, wherein the step of irradiating light for activating diurnal pests comprises: The illuminance of the area to be grown is set to 1 lx or more, and when the illuminance of the area to grow the plant is 1 lx or less, irradiation starts or the irradiation ends and the illuminance of the area to grow the plant becomes 1 lx or less. A diurnal pest control method characterized by being a thing.   2. The method for controlling diurnal pests according to claim 1, wherein the product of the illuminance and the cumulative irradiation time of the area where the plant is grown by the light that activates the diurnal pests is 150 lx hours or less.   3. The irradiation according to claim 1, wherein the irradiation is performed a plurality of times, and the interval until the next irradiation is started after the irradiation is completed is within 0.5 hours. Diurnal pest control method.   Diurnal pest control characterized by having a lighting device for irradiating light that activates diurnal pests in a region where plants are grown, and using the diurnal pest control method according to claim 1. apparatus.

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