JP2779093B2 - Artemisia attractant - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attractant for mites, which is an important pest such as cabbage, Chinese cabbage, radish, sugar beet, tobacco, and soybean, and more particularly, by setting this attractant in various insect traps, Atmosphere of the occurrence of insects is controlled one after another, and control is carried out at an appropriate time before the number of insects begins to increase. It relates to the agent.

[0002]

2. Description of the Related Art The armyworm is a typical omnivorous pest that is widely distributed in the temperate and cold zones and eats many crops. In Japan, in addition to the above-mentioned vegetables, rape, rape, pea, broad bean, adzuki, potato, eggplant, tomato, lettuce, burdock, cucumber, carrot, sweet potato, spinach, strawberry, asa, poppy, peppermint, buckwheat, morning glory, mallow , Roses, Akaza and many other plants have been affected.

[0003] In recent years, the danger to human bodies and the environment of insecticides used for control has become a problem, and there has been a growing demand for reducing the total consumption by spraying pesticides only in a suitable period. Among the insect pests in crops, artificially synthesized insect pheromone substances are used to attract insects, and their numbers are checked to understand their occurrence and to control them effectively with a small number of pesticide sprays. The method has already been put to practical use, and has been useful for controlling pests of tea and fruit trees, sink beetles of fruit trees, Japanese moth of vegetables, rice squid, rice of ume, and plum blossoms. When the sex pheromone substance is used as the attractant in this manner, the generation time and amount of the pest can be accurately grasped, so that excessive pesticide spraying can be eliminated and effective control can be achieved.

[0004] The sex pheromone substance of the armyworm,
Many reports have been made so far. That is, Z-
11-hexadecenyl acetate ア Hirai et al. (Appl. Ent.
Zool13 (2): 136-137, 1978), Bestmann et al. (Tetrahedron
Letters 6: 605-608, 1978), Descoins et al. (CR Acad.
Sc. Paris. T D286: 77-80, 1978)｝, Z-11-hexadecenyl acetate and Z-11-heptadecenyl acetate (ratio 95: 5) {Novak et al. (Acta Chimica Academiae Sci
entiar um Hungaricae Tomus 102: 135-140, 1979)
Z-11-hexadecenyl acetate, E-11-hexadecenyl acetate, tetradecyl acetate, and tetradecyl acetate (ratio 90: 1: 7: 2) ｛Struble et al. (Z. Naturforsch 35c: 45-48, 1980)}, Z-11-hexadecenyl acetate and Z-11-hexadecenyl or Z-11-hexadecenyl acetate and Z-11-hexadecenyl formate (ratio 100: 0.1) {Sub
chev and others (Comptes Rendus De L'Academie Bulgre Des Sc
iences 37: 353-354, 1984), Z-11-hexadecenyl acetate, Z-11-heptadecenyl acetate, and hexadecyl acetate (ratio 8: 1: 1) {Van de Veire et al. (Entomol. exp. appl41: 153-155, 1986)}, Z-11-hexadecenyl acetate, E-11-hexadecenyl acetate, tetradecyl acetate, hexadecyl acetate and Z-9-hexadecenyl acetate ( Ratio 100:
2.6: 0.5: 8.9: 0.8) {Attygalle et al. (Journal of C
chemical Ecology 13 (5): 1299-1311, 1987)｝

[0005] However, in Japan, these sex pheromone substances are too few to kill the armyworm, i.e., armyworm, in the field, and are not enough to predict the amount of the sex pheromone. There was a need to develop a composition formulation.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an attractant containing a sex pheromone substance as an active ingredient, which is useful for knowing the occurrence status of armyworm, which is known as a major pest of vegetables and field crops. What you want to do.

[0007]

Means for Solving the Problems In order to solve the above problems, the present inventors first identified a sex pheromone substance of armyworm. Insector LF was fed as a diet for the larva of the armyworm, and a large amount of armyworm was bred. The sex pheromone secretory glands of the reared virgin female of the armyworm were soaked in hexane to extract sex pheromone substances of 1047 animals.

[0008] The component analysis of this extract using GC-MS revealed that Z-11-hexadecenyl acetate, E-
11-hexadecenyl acetate, Z-11-hexadecenal, tetradecyl acetate, hexadecyl acetate, Z-9-hexadecenyl acetate, Z-11-octadecenyl acetate, Z-11-hexadecenyl Nine components of butyrate and Z-11-hexadecenyl alcohol were identified.

Of these, two components, Z-11-octadecenyl acetate and Z-11-hexadecenyl butyrate, are the first compounds found in Yotega. Also, Z-11
-Hexadesenal has already been reported to be involved in attraction, but it is the first time that it has been identified from extracts.

Next, the present inventors examined which of the nine components identified above was involved in the attraction by a net room test described in Examples described later. Based on this data, further field tests were carried out, and at least Z-11-hexadecenyl acetate, Z-11-hexadecenal, Z-11
The present inventors have found that three kinds of components of -11-octadecenyl acetate are most effective as an attractant and completed the present invention.

In using the attractant of the present invention, butylhydroxytoluene, butylhydroxyanisole,
An appropriate amount of an antioxidant such as hydroquinone or vitamin E or an ultraviolet absorber such as 2-hydroxy-4-octoxybenzophenone may be added.

The attractant of the present invention has a function of controlling the release amount of rubber, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyvinyl chloride and the like in order to maintain a constant amount of release of the active ingredient over a long period of time. It is used by filling containers such as caps, thin tubes, laminate bags, capsules, etc. made of a substance.

[0013]

EXAMPLES Specific embodiments of the present invention will be described below based on the results of the tests shown in Tables 1 to 4. 1. Confirmation of the effectiveness of attractants by a net room test: To find out which sex pheromone substance is attractive and how much
First, 1.0% by weight of butylhydroxytoluene and 1.0% by weight of each sex pheromone substance composition shown in Table 1 were added.
2-hydroxy-4-octoxybenzophenone, respectively, and allowed to soak into a polyethylene cap [ultra-thin section capsule (for electron microscope) manufactured by Amoto Kasei Co., Ltd.], and then allowed to stand overnight to form an attraction cap. did.

As shown in FIG. 1, this attraction cap 1 is placed in the center of a Takeda-type adhesive plate (manufactured by Takeda Pharmaceutical Co., Ltd.) 2, and is mounted on a commercially available triangular cylindrical SE trap (manufactured by Shin-Etsu Chemical Co., Ltd.) 3. Was attached to the bottom. Ten traps 3 [A to D
2 each with each composition and control trap (Cont) without attracting cap], width 6.3m, depth
A hut (net room) with the entire surface of 4.25m and 1.4m height covered with wire mesh
Inside, it was hung from a ceiling 4 with a string 5 so as to have a height of 1.2 m above the ground. In the evening, 70 male adults of the armyworm were released into the net room, and the number caught on the adhesive plate of the trap the next morning was counted (trapped number). This experiment was performed for two consecutive nights in June, and the results are shown in Table 1.

[0015]

[Table 1]

[0016]

[0017]

[0018]

[0019]

From the results shown in Table 1, it was found that the B composition obtained by adding the Z-11-hexadecenyl alcohol to the D composition had no attraction, and thus this alcohol inhibited the attraction. In addition, since the C composition excluding Z-11-hexadesenal from the D composition has no attraction, it was found that Z-11-hexadecenal was an essential component for attraction. Further, the composition A excluding Z-11-hexadecenyl butyrate from the composition D has an increased number of captures.
It can be seen that 11-hexadecenyl butyrate has a weak attraction inhibitory effect.

Based on the test results, an experiment on the sex pheromone substance composition shown in Table 2 was carried out in the same manner as in the experiment of Table 1, using the A component excluding alcohol and butyrate as the attraction inhibiting components as a reference composition. An experiment on the sex pheromone substance composition shown in Table 3 was performed four nights in June and five nights from June to July, and the results are also shown in Tables 2 and 3.

[0022]

[Table 2]

[0023]

[Table 3]

[0024]

[0025]

[0026]

[0027]

[0028]

From the results in Table 2, it was found that the attraction force of the E composition excluding Z-11-octadecenyl acetate from the A composition was lower, and that of the F composition excluding hexadecyl acetate had the same attraction force. did. From the results in Table 3, the G and H compositions, in which Z-9-hexadecenyl acetate and tetradecyl acetate were respectively removed from the A composition, have weak attraction, so that these two components are essential for attraction. As is evident, since the I composition without E-11-hexadecenyl acetate had a similar attractive force, it became clear that this component was not essential.

From these test results, the components necessary for attracting armyworm are Z-11-hexadecenyl acetate and Z-
It was found to be composed of five components, 11-hexadecenal, Z-11-octadecenyl acetate, Z-9-hexadecenyl acetate and tetradecyl acetate.

2. Confirmation of effectiveness of attractant by field test: Therefore, a field test on the sex pheromone substance composition shown in Table 4 was conducted using a cabbage field in the Ministry of Agriculture, Forestry and Fisheries and the National Institute for Agro-Environmental Technology by combining these five components. In this field test, a trap with an attraction cap was attached to an inverted L-shaped pile in the same manner as the net room test, and the trap was placed around the field so that the height of the trap was 80 cm above the ground. In addition,
Each trap has J-O composition, 16 control traps (Cont) without attracting cap and 2 virgin females are prepared. The rotation was performed so as to shift the position at a time. The experiment was performed for 23 days from August to September.

[0032]

[Table 4]

[0033]

[0034]

[0035]

[0036]

[0037]

[0038]

From the results shown in Table 4, the M composition excluding Z-11-octadecenyl acetate and the N composition excluding Z-11-hexadecenal from the J composition are more attractive than the J composition containing five components. It was found that these two components were essential for the expression of the attracting activity in the field.

From the above results, a three-component product obtained by adding at least Z-11-hexadecenal and Z-11-octadecenyl acetate to Z-11-hexadecenyl acetate as the main component, It was found to be excellent as an attractant for armyworm.

[0041]

Industrial Applicability The attractant according to the present invention has a higher attracting effect against the armyworm, known as a major pest of agricultural crops, than the other components and component ratios, and is useful for knowing the occurrence status. is there.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an installation state of a trap in a net chamber test according to an embodiment of the present invention.

[Explanation of symbols]

1 Induction cap, 2 Adhesive plate, 3 SE trap, 4
{Ceiling, 5} string.

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kiichi Shimizu 874-282-1, Nishihiro, Ichihara-shi, Chiba (72) Inventor Toshiyuki Kawana 1-729-1, Yoshida-cho, Chiba-shi, Chiba (72) Inventor Hiroshi Fukuda 118-4, Katamatori-cho, Chiba-shi, Chiba-shi (72) Inventor Akira Yamamoto 28-1, Nishifukushima, Oaza-ku, Kushiro-mura, Nakakushiro-gun, Niigata Pref. Shin-Etsu Chemical Co., Ltd. Shin-Etsu Chemical Industry Co., Ltd., Synthetic Technology Laboratory (72) Shin-Etsu Chemical Industry Co., Ltd. Synthetic Technology Laboratory (72) Inventor Toshiaki Ihara 28, Nishi-Fukushima, Niigata Pref. 56) References JP-A-6-56608 (JP, A) JP-A-4-243802 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01N 35/02 A01N 37/06 A01N 49/00

Claims (1)

(57) [Claims] 1. A attractant for armyworm, which contains at least Z-11-hexadecenyl acetate, Z-11-hexadecenal and Z-11-octadecenyl acetate as active ingredients.