JP2002142640A - Method for predicting breeding of pest using pheromone trap in field treated with communication disruptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for predicting the breeding of pests easy to install a pheromone trap and easy to investigate the breeding in a fiel treated with a communication disruptor. SOLUTION: This method for predicting the breeding of pests comprises using a pheromone trap equipped with, as the attractive source, a sustained release material bearing a sex pheromone at 20-1,000 wt. times that used in an ordinary breeding prediction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for predicting occurrence using a pheromone trap in a field treated with a communication disrupting preparation.

[0002]

2. Description of the Related Art Foreseeing the occurrence of pests, a warning light utilizing the phototaxis of the target pest is used. Forecasting lights have the advantage of collecting many types of pests in one unit, but conversely, this requires taxonomic expertise for research. In addition, there are many restrictions on the installation, such as the large size of the prediction light and the need for a power supply, and it is hard to say that the prediction of occurrence using the prediction light is a simple method. In fact, foresight lights are used
It is limited to universities and public laboratories and some agricultural cooperatives, etc. that have sufficient money and human resources, and will not be used by individuals.

Since the discovery of the sex pheromone of the silkworm in 1953, the sex pheromone of the pest has been energetically identified. In addition, with the development of synthetic techniques, synthetic pheromones have been supplied relatively inexpensively. One of the techniques utilizing the strong attraction and species specificity of sex pheromones is the prediction of their occurrence using pheromone traps. Pheromone traps are lightweight, do not require a power source, and have far fewer restrictions on installation than foresight lights. Furthermore, since only the target pests are captured, there is an advantage that surveys can be conducted without taxonomic expertise. In Japan, pheromone traps began to spread in the 1990s. Pheromone traps for lepidopteran insects have been put into practical use for predicting the occurrence.

[0004] In recent years, sex pheromones have begun to be actively used for direct control in addition to indirect control such as foresight. In particular, a product against 17 lepidopteran pests has been put on the market in a communication disruption method in which a large amount of sex pheromone is released into a field and chemical communication of the target pest is inhibited to control the pests.

[0005] Both outbreak prediction and communication disruption are techniques utilizing sex pheromones. However, it is said that they cannot be used in the same field, with the exception of one kind of pest. This is because, as described above, since communication disruption inhibits communication by the sex pheromone of the target pest, the attraction of the pheromone trap is significantly inhibited in a field treated with the communication disruptant. It has been shown that, in the case of the codling moth, a fruit pest of the family Antrodiaceae, it is possible to foresee if an attractant carrying 10 times the amount of pheromone normally used is installed in a field treated with a communication disrupter. However, in general, when the amount of the attracting source carried on the lepidopteran pest is excessive, the attracting argument tends to decrease, and the phenomenon observed in the codling moth has been considered a unique example. In fact, even when a 10-fold amount of the attracting source was tested in a communication disrupted field on several types of lepidopteran pests, there was no increase in individuals being repelled. Therefore, it has been thought that the only way to examine the change in the occurrence of pests other than codling moth in a field treated with a communication disruptor is to use an observation light or a molasses trap with low capture efficiency.

[0006] The pest control method using a communication disruptor is effective in filling the sex pheromone of the target pest into the air and exerting its effect. Therefore, weather conditions such as wind and temperature, and terrain such as slope and area of the field are considered. The control effect greatly depends on the conditions. In addition, since the control effect decreases as the density of pests increases, it is necessary to carefully consider weather and topographical conditions and to ascertain the pest density as much as possible for effective use of communication disrupters. Is considered desirable. Consideration of weather and terrain can be handled by using past weather data and maps. However, as described above, the treatment with the communication disrupter inhibits the attraction to the pheromone trap, and therefore, the pheromone trap, which is the simplest method for predicting the density of pests, cannot be used in a communication disturbance field.
Therefore, in order to predict the occurrence of communication disrupted fields, it was necessary to rely on low-efficiency methods, such as foresight lights, molasses traps, beating, and sweeping.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for forecasting occurrence in a communication disrupted field which is easy to install and investigate. is there.

[0008]

The pheromone trap, which is considered to be the simplest means of forecasting outbreaks including grasping the density of insect pests, was considered to be unusable in communication disrupted fields except for codling moths. However, as a result of repeated studies on the pheromone trap, the present inventors have found that the use of a sustained-release preparation that releases a larger amount of sex pheromone than the attraction source used for normal forecasting will cause the target pest to be killed in a communication disrupted field. The optimal amount of release depends on the insect species,
It was found to be within 1,000-fold, and that phenomenon was observed for the target pest, and the present invention was completed. Based on such knowledge, the pheromone trap that can be used in the communication disrupted field of the present invention made to achieve the above-mentioned object carries 20 to 1,000 times the weight of the sex pheromone used for normal occurrence prediction. And a pheromone trap provided with the sustained-release material as an attraction source. The optimum amount of pheromone of the attractant used for the present purpose varies depending on the pest species and is not uniform.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The pests to be used in the present invention are not particularly limited, but preferred examples thereof include communication disrupters for typical fruit tree pests of the family Aniidae, Sciagaba, Homoglia, Singiidae and Hosoga. Effective against target pests. In addition, preferable specific examples of the target pests include apple kokakumanamaki, kosukashiba, peach moguriga, peach squirrel, and chinmonhosoga.

[0010] The sex pheromone of the target pest used in the present invention is determined based on the natural pheromone composition, and as a preferred specific example, (Z) -9-tetradecenyl acetate is used as the sex pheromone of the apple snail, Pleurotus terrestris. (Z) -1
9: 1 weight ratio mixture of 1-tetradecenyl acetate, (Z, Z) -3,13
-Octadecadienyl acetate and (E, Z) -3,13-
Mixture of octadecadienyl acetate in a 1: 1 weight ratio, 14-methyl-1-hexadecene as a sex pheromone of peach moth moth, (Z) -13-eicosen-10-one as a sex pheromone of peach moth moth, and a sex pheromone of chinmon hosoga (Z) -10- as a sex pheromone
Mixtures of tetradecenyl acetate and (E, Z) -4,10-tetradecadienyl acetate in a 10: 1 weight ratio are mentioned.

The sustained-release material used in the present invention may be any material that does not corrode by the sex pheromone and has a certain degree of weather resistance, and specifically includes rubber (such as isoprene rubber) and polyethylene. Can be exemplified. Here, Table 1 shows an example of the weight of the normally used sex pheromone of the target pest. In the present invention, a sustained-release material which supports these 20-fold to 1000-fold amounts will be used. In this case, the amount capable of supporting the sex pheromone is generally lower than 20 times the amount of the sex pheromone normally supported on the isoprene rubber since the rubber is less than the polyethylene, and the upper limit is 1000 times the amount of the sex pheromone normally supported on the polyethylene. I do.

[0012]

[Table 1]

As a method of supporting the sex pheromone of the target pest on the sustained-release material, an impregnation method and the like can be mentioned, and as an example of the impregnation method, a dip method and the like can be mentioned.

The pheromone trap used in the present invention is not particularly limited, as it can be a normal pheromone trap except that a sustained release material carried in a predetermined amount is used as an attracting source. A mold trap or the like can be used. The color of the trap is white, yellow, black, green or the like.

[0015]

The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. Examples 1-2 and Comparative Examples 1-3 (Z) -9-tetradecenyl acetate and (Z) -11-
1 m mixture of tetradecenyl acetate in a 9: 1 weight ratio
What carried g in a rubber cap was usually used, and this was used as a standard product. Rubber caps that carry the sex pheromone of the apple cocoon monarch, 10 times, 20 times, and 100 times the weight of the standard product, are attached to white sticky traps, respectively, and the communication disruptor (tetrade (Cenyl acetate agent) was installed in a pear orchard treated at an interval of 10 m, and the number of infestations from May 1 to July 20 was examined (Examples 1-2 and Comparative Examples 1 and 2).
2). Further, as a target, one pheromone trap equipped with a standard product was installed in a pear field about 200 m away from this field and not treated with a communication disrupter, and the number of attracted animals was examined (Comparative Example 3).

As shown in Table 2, even when the standard product and the attracting source carrying 10 times the amount were installed in the field treated with the communication disruptant, no attracting was observed at all (Comparative Examples 1 and 2). When the carrying amount is increased by 20 times (Example 1), May 10
During the period from Sunday to May 20, July 1 to July 20, the animals became seized, and the 100-fold attractant (Example 2) was not treated with a communication disruptor It can be seen that, although less than the number of arguments to the standard product set in the field (Comparative Example 3), clear attraction is now recognized.

Example 3 and Comparative Examples 4 to 7 (Z, Z)-
3,13-octadecadienyl acetate, (E, Z)-
A rubber cap having 1 mg of a mixture of 3,13-octadecadienyl acetate in a 1: 1 weight ratio was usually used, and this was used as a standard product. Rubber caps carrying 10 times, 20 times, and 100 times the weight of the sex pheromone of Cosfaba were prepared, attached to white sticky traps, respectively, and treated with a coscillaber communication disrupter (Chelitolua). They were installed at 10 m intervals in a Japanese apricot orchard and the number of attracted animals from May 1 to December 1 was examined (Example 3, Comparative Examples 4 to 6). In addition, as a target, a pheromone trap equipped with a standard product attraction source was installed in a plum field about 60 m away from this field and not treated with a communication disrupter, and the number of killings was examined (Comparative Example 7).

As shown in Table 3, the standard product, 10 times, 20
Even if the attracting source of double loading is installed in the communication disruptor treated field,
Almost no attraction was observed (Comparative Examples 4 to 6),
When the loading amount was increased to 100 times (Example 3), although the number of arguments was smaller than that of the standard product (Comparative Example 7) installed in the field not treated with the communication disrupter, clear attraction was observed. You can see that it has become.

Examples 4 to 5 and Comparative Examples 8 to 10 14-
One in which 1 mg of methyl-1-hexadecene is supported on a rubber cap is usually used, and this was used as a standard product.
10 times higher than the standard product
Rubber caps that carry 0 times and 100 times the weight are made, attached to white sticky traps, and placed at 10 m intervals in a peach orchard that has been treated with a communication disrupter (pyrimalua agent) for peach scutellaria. The number of killings from day to July 21 was examined (Examples 4 to 5, Comparative Example 8 to
9). In addition, as a target, a pheromone trap provided with a standard product attraction source was installed in a peach field about 120 m away from this field and not treated with a communication disrupter, and the number of killed pheromone was examined (Comparative Example 10).

As shown in Table 4, even in the case of the standard product and the attraction source supporting the 10-fold amount, a slight attraction was observed during the period from June 25 to July 12, when the generation density was high. It is hard to say that the variation was reflected (Comparative Examples 8 to 9). However, when the supporting amount is increased from 20 times to 100 times (Examples 4 to
5) It can be seen that although the number of arguments to the standard product set in the field not treated with the communication disrupter was smaller than that of the standard product (Comparative Example 10), clear attraction was recognized.

Example 6 and Comparative Examples 11 to 14 As an attractive source of the sex pheromone of the peach moth, (Z)-
A carrier in which 3 mg of 13-eicosen-10-one is supported on a rubber cap is usually used, and this was used as a standard product. Peach pheromone of peach squid is 10 times better than standard
Rubber caps having a weight supporting 20 times and 20 times were produced. Further, 300 mg of sex pheromone could not be adsorbed on the rubber cap.
A polyethylene tube disclosed in Japanese Patent No. 403 is filled with a natural pheromone, and a length is adjusted so as to secure a release amount of about 100 times that of a standard rubber cap. These were attached to white sticky traps, respectively, and placed at intervals of 10 m in apple orchards treated with a peach squid communication disrupter (peach fluer), and the number of infestations from June 1 to October 1 was examined ( Example 6, Comparative Examples 11 to 13). Further, as an object, one pheromone trap provided with a standard product attraction source was installed in an apple field about 80 m away from this field and untreated with a communication disrupter, and the number of killed pheromone was examined (Comparative Example 14).

As shown in Table 5, the standard product, 10 times, and 20 times
Even in the case of the double-sourced attractant, almost no attraction was observed throughout the investigation period (Comparative Examples 11 to 13). However, when the loading amount was increased by 100 times (Example 6), although the number of arguments was smaller than that of the standard product (Comparative Example 14) installed in the field where the communication disrupter was not treated, the attracting was observed. You can see that it has become.

Examples 7-8 and Comparative Examples 15-18 (Z)-
10-tetradecenyl acetate and (E, Z) -4,10-
A rubber cap containing 0.0033 mg of a 10: 1 weight ratio mixture of tetradecadienyl acetate is usually used, and this was used as a standard product. Kinmonhosoga sex pheromone 10 times, 20 times, 100 times
Double and 1000 times weight-bearing rubber caps were made, attached to white sticky traps respectively, and placed at 10 m intervals in apple orchards treated with a communication disrupter (Arimalua agent) of Kimmon Hosoga. June 21 ~ September 10
The number of invites to date was examined (Examples 7 to 8, Comparative Examples 15 to
17). Further, as an object, one pheromone trap equipped with a standard product attraction source was installed in an apple field about 80 m away from the field and untreated with a communication disrupter, and the number of kills was examined (Comparative Example 18).

As shown in Table 6, the standard product, 10 times, 20
Attraction was also observed in the attraction source carrying double amount (Comparative Examples 15 to 17), but it was far more attractive than the standard product in the untreated field (Comparative Example 18). And the sensitivity to changes in generation density is low. However, in the case of the attraction source (Example 7) in which the carrying amount was increased 100 times,
The number of attractants increased, the response to the density increased, and the attracting source with a 1000-fold loading (Example 8) had almost the same attracting effect as a pheromone trap in a field without a disruptant treatment, and showed a clear generation and fate. It turns out that it is recognized.

[0025]

As described above in detail, the use of the pheromone trap of the present invention makes it possible to conduct a simple investigation of the occurrence and fate of the target pest, including the density of the target pest, even in a communication disrupted field. By using this method, it is possible to easily measure the density of the target pests that inhabit the fields treated with the communication disruptor, so that communication disruption, which is attracting attention as an environmentally-friendly agricultural material recommended by the Ministry of Agriculture, Forestry and Fisheries, is It contributes to the stable control of the insecticide and furthermore makes it possible to easily know the time of occurrence of the pests, so that it is possible to spray complementary insecticides in a timely manner, which greatly contributes to the development of comprehensive control.

[0026]

[Table 2]

[0027]

[Table 3]

[0028]

[Table 4]

[0029]

[Table 5]

[0030]

[Table 6]

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01N 63/00 A01N 63/00 BF Term (Reference) 2B121 AA12 BA09 BA52 CC14 DA63 EA21 FA01 FA16 FA20 4H011 AC07 BA01 BB01 BB05 BB06 BC19 DA05 DA11 DC10 DH14

Claims (3)

[Claims] 1. A method for predicting occurrence in a field of communication disruption treatment, wherein a pheromone trap is used, which uses a sustained-release material carrying a sex pheromone of a target pest in an amount of 20 to 1000 times its usual weight as a trigger. 2. The method according to claim 1, wherein the target pest is a pest belonging to a family selected from the group consisting of Anopheles, Scarabaeidae, Anthophoridae, Singiidae, and Podidae. Occurrence forecast method described. 3. The method according to claim 1, wherein the target pest is a pest selected from a group consisting of apple kamakumamakimaki, kosukashibashi, peach moguriga, peach squirrel and chinmonhosoga. .