KR102592216B1 - Composition for controlling gypsy moth egg mass - Google Patents

Abstract

A composition for controlling gypsy moth egg masses according to an embodiment of the present invention includes a plant extract mixture including derris extract, citronella oil, cinnamon extract, and citrus oil; and surfactants.

Description

Composition for controlling gypsy moth egg masses {COMPOSITION FOR CONTROLLING GYPSY MOTH EGG MASS}

The present invention relates to a composition for controlling gypsy moth egg masses.

Due to climate change, damage from unexpected pests is increasing. The gypsy moth is an insect from the Lepidoptera family of poisonous moths and is also called the gypsy moth. Gypsy moths lay eggs in lumps on tree trunks. After overwintering, the egg masses hatch into larvae around April of the following year, and become adults around July to August. Gypsy moth larvae damage the leaves of various fruit trees such as apple trees and pear trees, and plants such as oak trees, elm trees, and birch trees. Accordingly, the gypsy moth is known as a representative pest.

When controlling gypsy moth larvae, natural enemies of the gypsy moth may also be affected, which may cause side effects in the natural environment.

Accordingly, there are attempts to control egg masses of gypsy moths during the wintering season. However, because the egg masses are covered with waxy secretions, it is difficult to control them using chemical pesticides.

The technical problem to be achieved by the present invention is to provide a composition for controlling gypsy moth egg masses.

A composition for controlling gypsy moth egg masses according to an embodiment of the present invention includes a plant extract mixture including derris extract, citronella oil, cinnamon extract, and citrus oil; and surfactants.

The surfactant may include a silicone-based surfactant and a nonionic surfactant.

The plant extract mixture may further include neem extract.

The surfactant may be included in an amount of 2 to 4 parts by weight based on 10 parts by weight of the plant extract mixture.

Based on 10 parts by weight of the neem extract, it may include 8 to 12 parts by weight of the Derris extract, 4 to 6 parts by weight of the citronella oil, 12 to 18 parts by weight of the cinnamon extract, and 24 to 38 parts by weight of the citrus oil.

The plant extract mixture may further include sophora ginseng extract.

The surfactant may be included in an amount of 2 to 4 parts by weight based on 10 parts by weight of the plant extract mixture.

It may be included in 8 to 12 parts by weight of the Derris extract, 4 to 6 parts by weight of the citronella oil, 12 to 18 parts by weight of the cinnamon extract, and 24 to 38 parts by weight of the citrus oil, based on 10 parts by weight of the sophora extract.

The composition for controlling gypsy moth egg masses according to an embodiment of the present invention may further include an emulsion stabilizer.

The emulsion stabilizer may be included in an amount of 0.5 to 1 part by weight based on 10 parts by weight of the plant extract mixture.

According to an embodiment of the present invention, a composition for controlling gypsy moth egg masses can be obtained. In particular, according to an embodiment of the present invention, a control effect of more than 50%, preferably more than 90%, and more preferably more than 99% can be obtained against gypsy moth egg masses, thereby minimizing damage caused by gypsy moth. . According to an embodiment of the present invention, chemical pesticides can be replaced, so side effects on the natural environment can be minimized.

Figure 1(a) is a photograph after indoor testing using Example 1, and Figure 1(b) is a photograph after indoor testing using Comparative Example 5.
Figures 2(a) and (b) are photos after outdoor testing using Example 2, and Figures 2(c) and (d) are photos after outdoor testing using Comparative Example 10.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and as long as it is within the scope of the technical idea of the present invention, one or more of the components may be optionally used between the embodiments. It can be used by combining and replacing.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention, unless explicitly specifically defined and described, are generally understood by those skilled in the art to which the present invention pertains. It can be interpreted as meaning, and the meaning of commonly used terms, such as terms defined in a dictionary, can be interpreted by considering the contextual meaning of the related technology.

Additionally, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular may also include the plural unless specifically stated in the phrase, and when described as "at least one (or more than one) of A and B and C", it is combined with A, B, and C. It can contain one or more of all possible combinations.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

These terms are only used to distinguish the component from other components, and are not limited to the essence, sequence, or order of the component.

A composition for controlling gypsy moth egg masses according to an embodiment of the present invention includes a plant extract mixture including derris extract, citronella oil, cinnamon extract, and citrus oil; and surfactants.

Derris is a climbing shrub of the dicotyledonous Rosaceae legume family, and is a plant that grows mainly in Southeast Asia. It was found that rotenone contained in Deris has insecticidal activity, but is not harmful to humans or livestock.

Citronella is a perennial herb from the monocot plant family Rice Plantae, and its origin is Sri Lanka. Citronella oil can be extracted by steam distillation of dried leaves of Citronella rather than fresh leaves. Citronella oil is mainly used as a perfume or cosmetic raw material, and can also be used as a pest deterrent by blocking access to insects and mosquitoes. It is also known to have sterilizing and preservative effects.

Cinnamon is a medicinal herb made from the bark of Saengdal tree, an evergreen tree belonging to the Lauraceae family. The volatile essential oil components of cinnamon may include Phellandrene, Eugenal, and Methyleugual. The cinnamon aldehyde and salicyl aldehyde components of cinnamon are also used as natural insect repellent.

Citrus is a comprehensive name for tangerines such as tangerines, oranges, lemons, citrons, limes, and grapefruits, and citrus oil is the essential oil of citrus fruits. Citrus oils contain D-limonene. D-limonene can dissolve the epidermal layer of gypsy moth egg masses, shorten the egg-laying period, inhibit the number of eggs and synthesis of testicular cells, and reduce the lifespan of adults. Accordingly, when citrus oils are used together with neem extract, derris extract, citronella oil, and cinnamon extract, the insecticidal mechanism can be amplified. In particular, the mixture of D-limonene contained in citrus oil and a penetrating surfactant allows the plant extract mixture according to an embodiment of the present invention to penetrate deeply into the gypsy moth egg mass, thereby destroying the eggs of the target pest, the gypsy moth. Their shedding can be prevented.

According to an embodiment of the present invention, the surfactant is a penetrating functional surfactant and may include a silicone surfactant and a nonionic surfactant.

Surfactants can adsorb to the interface of mixed materials and reduce the free energy of the interface to facilitate the mixing of materials. Silicone surfactants are a type in which one or more hydrophilic polar groups are bonded to a hydrophobic silicone group. Silicone surfactants can have low interfacial tension, lubricity, spreadability, water repellency, thermal stability, and chemical stability. Nonionic surfactants are those in which the hydrophilic part is non-electrolyte, that is, they have a hydrophilic part that does not ionize. There are nonionic surfactants that have hydrophilic groups such as alkyl glycol, polyethylene glycol, polyvinyl alcohol, and polyoxyethylene. Nonionic surfactants have excellent biodegradability. When the surfactant includes a silicone surfactant and a nonionic surfactant, it not only disperses the plant extract mixture, but also increases the fluidity of the wax layer of the gypsy moth egg mass, allowing it to penetrate into the wax layer. For example, the silicone surfactant may be ethoxylated polydimethylsiloxane, and the nonionic surfactant may be a mixture of polyoxyethylene dodecyl mono ether and castor oil (PolyOxyethylen dodecyl mono ether + Castor oil). You can. Accordingly, the plant extract mixture containing citrus oil can effectively penetrate into the wax layer of the gypsy moth egg mass together with the surfactant.

A composition for controlling gypsy moth egg masses according to an embodiment of the present invention includes a plant extract mixture including neem extract, derris extract, citronella oil, cinnamon extract, and citrus oil; and surfactants. Redundant explanations for content that is the same as the above-mentioned content regarding derris extract, citronella oil, cinnamon extract, citrus oil, and surfactant will be omitted. Neem Tree (Azadirchta indica A.Juss) is a semi-evergreen tree of the Neem family and is native to Myanmar, Bangladesh, and India. Neem, the fruit of the neem tree, and its seeds can be used to make neem oil.

According to an embodiment of the present invention, the main medicinal ingredients of neem oil may be azadirachtin and salannin. Azadirachtin has the effect of inhibiting the growth and molting of insects, and their feeding and reproductive activities, while salanin has the effect of delaying the molting of insects or suppressing their feeding activities. The insecticidal activity against larvae in gypsy moth egg masses can be increased by combining azadirachtin and salanin in neem oil. In particular, when neem oil, citrus oil, and a penetrating surfactant are used together according to an embodiment of the present invention, the composition according to an embodiment of the present invention can easily penetrate into the gypsy moth egg mass and the insecticidal effect can be amplified.

According to an embodiment of the present invention, the surfactant is used in an amount of 2 to 4 parts by weight, preferably 2.5 parts by weight, based on 10 parts by weight of a plant extract mixture containing neem extract, derris extract, citronella oil, cinnamon extract and citrus oil. It may be included in an amount of 2.5 to 3.5 parts by weight, more preferably 2.5 to 3 parts by weight. When the ratio of the plant extract mixture and the surfactant is in this range, the surfactant increases the fluidity of the wax layer of the gypsy moth egg mass, and it is easy for the plant extract mixture to penetrate into the gypsy moth egg mass together with the surfactant. More specifically, according to an embodiment of the present invention, the plant extract mixture includes 8 to 12 parts by weight of the Derris extract, 4 to 6 parts by weight of the citronella oil, and 12 to 18 parts by weight of the cinnamon extract, based on 10 parts by weight of the neem extract. Parts by weight, it may be included in 24 to 38 parts by weight of the citrus oil. When the plant extract mixture is included in this numerical range, it can have a high control effect against gypsy moth egg masses.

According to an embodiment of the present invention, a high insecticidal effect on larvae in gypsy moth egg masses can be obtained by the combined action mechanism of neem extract, derris extract, citronella oil, and cinnamon extract. In particular, when citrus oil and penetrating surfactant are used together with neem extract, derris extract, citronella oil, and cinnamon extract, the insecticidal ingredient can efficiently penetrate and then act on the larvae in the gypsy moth egg mass, increasing the control effect. can be maximized.

A composition for controlling gypsy moth egg masses according to an embodiment of the present invention includes a plant extract mixture including sophora extract, derris extract, citronella oil, cinnamon extract, and citrus oil; and surfactants. Redundant explanations for content that is the same as the above-mentioned content regarding derris extract, citronella oil, cinnamon extract, citrus oil, and surfactant will be omitted. Sophora flavescens is a perennial herb of the dicotyledonous Rosaceae legume family. It has a bitter taste and has the effects of ginseng, so it is used as a medicine. In the private sector, the stems and leaves are boiled and used as an insecticide. The extract concentrate of whole plants, including Sophora ginseng root, contains natural alkaloids Matrin and Oxymatrin, which can have insecticidal effects on mites (caricides) and moths. N-(p-ethyl)phenylsulfonylmatrinic acid, extracted from the natural alkaloid matrine, has acaricidal activity about 5.9 times more pronounced than 1 against adult female mites, and can have excellent control efficiency in greenhouses. When this Sophora extract is used together with derris extract, citronella oil, cinnamon extract, citrus oil, and penetrating surfactant, the insecticidal ingredient can efficiently penetrate and then act on the larvae in the gypsy moth egg mass, maximizing the control effect. It can be.

According to an embodiment of the present invention, the surfactant is used in an amount of 2 to 4 parts by weight, preferably 2.5 parts by weight, based on 10 parts by weight of a plant extract mixture containing sophora extract, derris extract, citronella oil, cinnamon extract and citrus oil. It may be included in an amount of 2.5 to 3.5 parts by weight, more preferably 2.5 to 3 parts by weight. When the ratio of the plant extract mixture and the surfactant is in this range, the surfactant increases the fluidity of the wax layer of the gypsy moth egg mass, and it is easy for the plant extract mixture to penetrate into the gypsy moth egg mass together with the surfactant.

More specifically, according to an embodiment of the present invention, the plant extract mixture includes 8 to 12 parts by weight of the Derris extract, 4 to 6 parts by weight of the citronella oil, and 12 to 18 parts by weight of the cinnamon extract, based on 10 parts by weight of the sophora ginseng extract. Parts by weight, it may be included in 24 to 38 parts by weight of the citrus oil. When the plant extract mixture is included in this numerical range, it can have a high control effect against gypsy moth egg masses.

The composition for controlling gypsy moth egg masses according to an embodiment of the present invention may further include an emulsion stabilizer. For example, the emulsion stabilizer may be included in an amount of 0.5 to 1 part by weight based on 10 parts by weight of the plant extract mixture of the composition for controlling gypsy moth egg masses. According to this, the composition for controlling gypsy moth egg masses according to an embodiment of the present invention maintains an appropriate viscosity on the surface of the egg mass until it penetrates into the wax layer of the gypsy moth egg mass and does not easily flow, so the control effect is high compared to the spray amount of the composition. You can have

The composition for controlling gypsy moth egg masses according to an embodiment of the present invention may be diluted in water 100 to 2000 times, preferably 200 to 1500 times, and more preferably 500 to 1000 times, and then directly sprayed on the gypsy moth egg masses.

Hereinafter, the effect of the composition for controlling gypsy moth egg masses according to an embodiment of the present invention will be explained using comparative examples and examples.

<Example 1>

A plant extract mixture containing 20 wt% of derris extract, 10 wt% of citronella oil, 10 wt% of cinnamon extract, and 30 wt% of citrus oil, 25 wt% of a surfactant containing a silicone-based surfactant and a nonionic surfactant, and 5 wt% of an emulsion stabilizer. The composition containing the mixture was diluted with water and then sprayed on gypsy moth egg masses in an indoor environment.

<Comparative Example 1>

A composition containing derris extract, citronella oil, cinnamon extract, surfactant, and emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an indoor environment.

<Comparative Example 2>

A composition containing Carranza extract, surfactant, and emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an indoor environment.

<Comparative Example 3>

A composition containing neem extract, surfactant, and emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an indoor environment.

<Comparative Example 4>

Chlorpyrifos, a chemical pesticide, was diluted with water and sprayed on gypsy moth egg masses in an indoor environment.

<Comparative Example 5>

Gypsy moth egg masses were untreated in an indoor environment.

Table 1 shows the results of testing the hatching rate and control rate in Example 1 and Comparative Examples 1 to 5, Figure 1(a) is a photograph after indoor testing using Example 1, and Figure 1(b) is a comparative example. This photo is after indoor testing using 5.

Experiment number Hatching rate (%) Control rate (%) note Example 1 0.2±0.39 99.8 Death of hatched larvae Comparative Example 1 9.4±2.59 90.2 Prototype, hatching larva fatality Comparative Example 2 8.1±5.71 91.5 prototype Comparative Example 3 17.2±10.58 82.0 Comparative Example 4 17.7±8.61 81.5 Chemical pesticides kill hatching larvae Comparative Example 5 95.8±1.68 Untreated

Referring to Table 1, the composition for controlling gypsy moth egg masses according to the examples of the present invention has a control effect of 99.8% in an indoor environment, and has a higher control effect compared to the composition containing components different from the examples of the present invention. can be seen. In particular, when comparing Comparative Example 1 and Example 1, it can be seen that the control effect of Example 1 containing citrus oil is superior to the control effect of Comparative Example 1 not containing citrus oil.

<Example 2>

A plant extract mixture containing 20 wt% of derris extract, 10 wt% of citronella oil, 10 wt% of cinnamon extract, and 30 wt% of citrus oil, 25 wt% of a surfactant containing a silicone-based surfactant and a nonionic surfactant, and 5 wt% of an emulsion stabilizer. The composition containing the mixture was diluted with water and then sprayed on gypsy moth egg masses in an outdoor environment.

<Example 3>

A plant extract mixture comprising 10 wt% neem extract, 10 wt% derris extract, 5 wt% citronella oil, 15 wt% cinnamon extract and 30 wt% citrus oil, 25 wt% surfactant comprising a silicone-based surfactant and a nonionic surfactant, and A composition containing 5 wt% of an emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an outdoor environment.

<Example 4>

A plant extract mixture comprising 10 wt% of Sophora extract, 10 wt% of Derris extract, 5 wt% of citronella oil, 15 wt% of cinnamon extract and 30 wt% of citrus oil, 25 wt% of a surfactant including a silicone-based surfactant and a nonionic surfactant, and A composition containing 5 wt% of an emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an outdoor environment.

<Comparative Example 6>

A composition containing derris extract, citronella oil, cinnamon extract, surfactant, and emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an outdoor environment.

<Comparative Example 7>

A composition containing Carranza extract, surfactant, and emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an outdoor environment.

<Comparative Example 8>

A composition containing neem extract, a surfactant, and an emulsion stabilizer was diluted with water and then sprayed on gypsy moth egg masses in an outdoor environment.

<Comparative Example 9>

Chlorpyrifos, a chemical pesticide, was diluted with water and sprayed on gypsy moth egg masses in an outdoor environment.

<Comparative Example 10>

Gypsy moth egg masses were untreated in an outdoor environment.

Table 2 shows the results of testing the hatching rate and control rate in Example 2 and Comparative Examples 6 to 10, Figures 2(a) and (b) are photographs after outdoor testing using Example 2, and Figure 2(c) ) and (d) are photos after outdoor testing using Comparative Example 10.

Experiment number Hatching rate (%) Control rate (%) note Example 2 42.3±12.03 52.7 Example 3 0.4±0.06 99.6 Death of hatched larvae Example 4 0 100 Death of hatched larvae Comparative Example 6 70.2±3.15 21.4 prototype Comparative Example 7 69±6.34 22.8 prototype Comparative Example 8 69.5±8.79 22.1 Comparative Example 9 68.7±3.14 23.1 chemical pesticides Comparative Example 10 89.3±2.38 Untreated

Referring to Table 2 and Figure 1, it can be seen that Example 2 has a significantly higher control effect compared to Comparative Examples 6 to 10 even in outdoor environments where the composition for controlling gypsy moth egg masses according to Examples of the present invention is actually applied. there is.

In particular, in Examples 3 to 4, which further include neem extract or sophora extract according to an embodiment of the present invention, it can be seen that the composition has a pest control effect of more than 99% in an outdoor environment where it is actually applied.

Although the present invention has been described above with reference to preferred embodiments, those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can do it.

Claims (10)

A plant extract mixture comprising derris extract, citronella oil, cinnamon extract and citrus oil; A composition for controlling gypsy moth egg masses comprising a surfactant,
The plant extract mixture further includes neem extract or sophora extract,
The surfactant includes a silicone-based surfactant and a nonionic surfactant,
Based on 10 parts by weight of the neem extract or sophora extract, 8 to 12 parts by weight of the derris extract, 4 to 6 parts by weight of the citronella oil, 12 to 18 parts by weight of the cinnamon extract, and 24 to 38 parts by weight of the citrus oil. And
A composition for controlling gypsy moth egg masses, wherein the surfactant is included in an amount of 2 to 4 parts by weight based on 10 parts by weight of the plant extract mixture. delete delete delete delete delete delete delete According to paragraph 1,
A composition for controlling gypsy moth egg masses further comprising an emulsion stabilizer. According to clause 9,
A composition for controlling gypsy moth egg masses, wherein the emulsion stabilizer is included in an amount of 0.5 to 1 part by weight based on 10 parts by weight of the plant extract mixture.