JPH037210A - Insect pest repellent - Google Patents

Abstract

PURPOSE:To obtain a Thrips palmi karny repellent by using, as an active ingredient, one or more spice essential oil selected from allspice oil, anise oil, basil oil, celery oil, cinnamon oil, garlic oil, origanum oil and so on. CONSTITUTION:The Thrips palmi karny repellent contain, as an active ingredient, spice essential oils which are obtained by steam distillation or extraction with an organic solvent such as alcohol or hexane of flowers, seeds, foliage or bulbs of allspice. anise, clove. cumin, ginger, marjoram, mint, mustard, nut meg, onion. pepper. tarragon or thyme. The repellent is used by spraying the area for protecting from the thrips or diffusing the smells from paper sheets coated with the essential oils. The application amount is 1 to 10wt.% of the effective components, when it is used in liquid form, while 1 to 20wt.% in solid form.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is directed to the use of southern thrips, which is a crop pest.
The present invention relates to a repellent for Thrips palmi karny).

<Prior art> Recently, especially southern yellow thrips (Thripspa
Damage to agricultural crops due to larvae (lml karny) is on the rise. The main crops that are affected by this pest are 2, including cucumbers, eggplants, green peppers, shishito peppers, melons, bitter melons, capochas, and other fruit vegetables, as well as chrysanthemums (petals), which cause significant damage to many crops.

This pest is a pest native to Southeast Asia, and in Japan it was discovered in southern Kyushu in 1978, and has since spread northward from Shikoku and the Chugoku region to the Kinki region, and has now expanded its distribution to the Kanto region.

Conventional methods for controlling this pest include sulprophos emulsion, oxamyl granules, and carbosulfan granules.

Pesticides such as Phosalon powder/emulsion and BPMC emulsion are used. However, there are many problems in using such pesticides effectively. In other words, this pest has a long spawning period;
Because the proliferation is extremely rapid, once adult insects are detected, the pesticide must be sprayed in layers for 4 to 5 days in order to be effective. Multiple spraying of pesticides not only has a negative impact on the health of the workers, but also damages the environment due to residual pesticides. There is a risk of causing pollution and disturbance of natural biota. Furthermore, this pest has the disadvantage of exhibiting high resistance to chemicals.

Recently, a method has been implemented in which silver polyfilm is coated on the ground surface and ridges of the cultivation area to prevent and repel blight, but the current situation has not shown a sufficient control effect. It is.

<Problems to be Solved by the Invention> The purpose of the present invention is to eliminate the most difficult pest to control, the southern yellow thrips (Thrips palmi karn).
y) to provide a repellent.

According to the present invention, allspice oil, anise oil, basil oil, celery oil, cinnamon oil, clove oil, cumin oil, garlic oil, ginger oil, marjoram oil, mint oil , mustard oil, nutmeg oil, onion oil, pepper oil, tarragon oil, savory oil, thyme oil, turmeric oil, oregano oil and mixtures thereof as an active ingredient. A southern thrips repellent is provided.

The present invention will be explained in more detail below.

In the present invention, the spice essential oil used as an active ingredient is allspice grown in each region (country) of the world.
Pimentha dioicalis L,), anise (Pimpinella anisum L,),
Basil (Ocimum basilicum L,), celery (Apicum graveolens L,)
Cinnamomun+ cassia
Blume.

Cinnamotrum zeylanicum N
aes), clove (Syzygium aroma
ticum t,), cumin (Cuminumcy)
minum L, ), garlic (Allium 5a
tivuIIIL,), Zingi'r-(Zingib
er official Rose, ), marjoram (Majorana hortensis Moe)
nch, ), mint (Mentha arvensis
L,, Mentha piperita Lj4en
thaspicata L,), mustard [Bras
sica alba Boiss.

Brassica nigra(L,)koch,,
Brassica juncea (L,), Nutmeg (Myristica fragrans tlou)
tt, ), onion (Allium cepa L,
), Pepper (Piper nigrum L,) Tarabon (Artemisia dracunculus L)
), Savory (Satureia horten)
is L,, 5atureia montana L,)
, Thyme (Dinghymus vnlgaris L,)
, turmeric (Curcum langa L,) +
Oregano (Or 3.)
re +,,) Plant flowers, seeds, branches, leaves, bark, rhizomes, or scales can be obtained by steam distillation, or by extraction with organic solvents such as alcohol, acetone, and hexane, or liquid carbon dioxide extraction, etc. .

In addition, the spice essential oil is commercially available as a fragrance,
Commercially available products can also be used. Essential oils prepared from the spice plants or commercially available flavorings (essential oils) can be used as flavoring agents for processed foods such as confectionery, liqueurs, soups, meat products, drinks, curry powder, gums, sauces, ketchup, instant noodles, and dressings. In addition to being widely used as a medicine, it is also widely used around the world in oral fresheners, toothpaste fragrances, cosmetic fragrances, perfumes, preservatives, and antifungal agents.

The repellent of the present invention can be used by selecting one or more of the above-mentioned spice essential oils. Also,
It is dissolved, mixed or adsorbed in a carrier (liquid or solid), and if necessary, auxiliary agents such as emulsifiers and dispersants are added to form dosage forms such as oil solutions, emulsions, wettable powders, granules, tablets and aerosols. It can also be used in

Examples of the solvent used in the formulation include alcohols such as ethyl alcohol, isopropyl alcohol, ethylene glycol, and propylene glycol, acetone,
Ketones such as methyl ethyl ketone, ethers such as dioxane, tetrahydrofuran, methyl selb, hexane, kerosene, paraffin, petroleum benzine, α- and β-
Aliphatic hydrocarbons such as pinene and limonene; aromatic hydrocarbons such as benzene and toluene; and esters such as ethyl acetate, butyl acetate and amyl acetate.

Examples of the solid carrier include mineral powders such as silicic acid, calcium silicate, kaolin, bentonite, talc, acid clay, calcium carbonate, alumina, activated carbon, starch,
Examples include vegetable powders such as soybean flour and clathrate compounds such as cyclodextrin.

Furthermore, examples of the emulsifiers and dispersants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl allyl ethers, polyoxyethylene fatty acid esters, fatty acid glycerides, sorbitan fatty acid esters, higher alcohol sulfuric esters, and casein. ,
Gelatin, agar.

Vegetable natural resins such as CMC and gum arabic can be used. Further, as the propellant for the aerosol, for example, liquefied petroleum gases, dimethyl ether, fluorocarbons, etc. can be used.

Further, the pest repellent of the present invention can also contain efficacy enhancers, antioxidants, insecticides, flavoring agents, coloring agents, and the like.

The repellent of the present invention can be used by spraying it or applying it on a sheet substrate etc. around the crop area to be protected from the southern thrips (Thrips palmi karny) so that the scent (smell) wafts out. For example, any method can be used.

The amount of the active ingredient, which is the spice essential oil, contained in the repellent of the present invention can be appropriately determined depending on the dosage form, application method, application location, etc., and is not necessarily limited. For example, when used in the form of a liquid phase such as a dispersant or a wettable powder, the active ingredient is 0.1 to 30% by weight, preferably 1% by weight.
It is desirable to contain up to 10% by weight. In solid forms such as powders and granules, 0.1 to 30% by weight of the active ingredient
, preferably 1 to 20% by weight, and when further retained in a sheet base material (synthetic resin, nonwoven fabric, etc.), it is impregnated in an amount approximately 1/3 times the saturated impregnation amount of the sheet base material, etc. It is preferable.

In addition, the minimum effective concentration of the pest repellent obtained by the present invention, for example, when spraying or coating, is 1 /
d or more, when used in the form of a solid or sheet base material,
It is appropriate to volatilize 1 ppm or more into the application space.

<Effects of the Invention> By using the pest repellent of the present invention, Thrips pal+i karny
A very good repellent effect can be obtained.

<Implementation hook> The present invention will be explained in more detail with reference to Examples and Comparative Examples.

FIG. 1 shows the test equipment employed in the 1 composition 9 1 poor book test. The reaction measurement chamber (made of glass) 1 has a length of 20cm and a height of 4aIl.

It is a container with a width of 15a + 1 (content approximately 1200ad),
A partition wall 2 is provided which divides the container into equal parts.

The two equally divided chambers 3 and 4 communicate with each other below the partition wall 2. One of the chambers 3 contains a sample (pest repellent) 5
A wide-mouthed glass bottle 6 containing the liquid is connected to a glass tube 7 through a glass tube, and the other chamber 4 is connected to an empty wide-mouthed glass bottle 9 through a glass tube 8.

The air flow passes through an air purifier (filled with activated carbon) 12,
A part of it flows from one wide-mouth glass bottle 6 into one chamber 3, and the rest flows from the other wide-mouth glass bottle 9 into the other chamber 4. Flow rate adjustment cock 4 and water pump 11
is connected to.

Using the above device, place 4 in the center of both chambers 3 and 4 for reaction measurement.
After arranging two pieces of square cut eggplant leaf pieces of 4 cm x 4 cm and placing 50 southern yellow thrips (adults) in the chamber 3, and then placing the sample 5 in the wide mouth glass bottle 6, the water pump 11 was activated (air flow rate 300 mQ). /win).

In this case, the sample in one sample bottle 6 evaporates and flows into the chamber 3 together with air. Therefore, if the odor of the sample has a repellent effect on southern yellow thrips, the southern yellow thrips will exhibit repellent behavior and escape to the other chamber 4. If the sample odor has no repellent effect on southern yellow thrips, the southern yellow thrips will exhibit repellent behavior and escape to the other chamber 4. There will be approximately the same number in chambers 3 and 4.

To measure the effect, observe and record the number of southern thrips migrating immediately after adding the sample and 1 minute later (average of three times in total). As a result, the number of southern thrips present in chamber 3 of the sample odor airflow is calculated as follows. The evaluation method was shown below.

10++...4 or less (strong repellent effect)++...5
~9 (with repellent effect) +...10-14 (with some repellent effect)
・15 to 19 animals (almost no repellent effect) ・20 or more animals
(No repellent effect) Using the above test device, commercially available allspice oil, anise oil, persil oil, celery oil, cinnamon oil,
Clove oil, cumin oil, garlic oil, ginger marjoram oil, mint oil, mustard oil, nutmeg oil, onion oil, pepper oil, cod bon oil, savory oil, thyme oil, turmeric oil, oregano oil each for propylene glycol. The content was 1% by weight, the whole was set as Log, and the mixture was placed in a wide-mouthed glass bottle 6 and an experiment was conducted according to the test method described above. The results are shown in Table 1.

Cliff strangulated soil Using the test apparatus described above, propylene glycol Log was placed in a wide mouth glass bottle 6 and an experiment was conducted according to the test method described above. The results are shown in Table 1.

As is clear from Table 1, the repellent of the present invention repelled southern thrips.

Ten pieces of adhesive tape were hung at appropriate intervals in the granule preparation area and control area), and two weeks later, the number of southern yellow thrips that had flown into the vinyl greenhouse and been captured by the adhesive tape was investigated. The results are shown in Table 2.

Cinnamon oil 6% Clove oil 3% Ginger oil
1% Propylene glycol (solvent) 90% 100 (weight) Calcium silicate granules (Fluorite RM: manufactured by Tokuyama Soda Co., Ltd.) were impregnated with the repellent composition prepared according to the above formulation (2
Double the weight) and prepare it in a vinyl greenhouse for eggplant cultivation in one area (
In the second line (repellent area, control area), 60 g of the repellent prepared above was placed in the vinyl house of the repellent area using an air freshener (1! Pond motor).

The 10 aromatic devices were placed on the top at equal intervals to detect the arrival of southern yellow thrips.

Judging the effectiveness of each vinyl house (repellent table)
2 As is clear from Table 2, the repellent of the present invention showed an excellent repellent effect against southern yellow thrips (adult).

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the experimental apparatus used in Example 1.

Claims (1)

[Claims] Allspice oil, anise oil, basil oil, celery oil,
Cinnamon oil, clove oil, cumin oil, garlic oil,
Active spice essential oils selected from the group consisting of ginger oil, marjoram oil, mint oil, mustard oil, nutmeg oil, onion oil, pepper oil, tarragon oil, savory oil, thyme oil, turmeric oil, oregano oil and mixtures thereof. A repellent for southern yellow thrips, characterized by containing it as an ingredient.