KR20120051431A

KR20120051431A - Composition for controlling fungus gnat and a method using the same

Info

Publication number: KR20120051431A
Application number: KR1020100112864A
Authority: KR
Inventors: 양경형
Original assignee: 주식회사 와이에이코리아
Priority date: 2010-11-12
Filing date: 2010-11-12
Publication date: 2012-05-22

Abstract

PURPOSE: A composition for preventing Bradysia agrestis and a preventing method are provided to prevent human body and livestock from harmfulness and residual toxicity. CONSTITUTION: A composition for preventing Bradysia agrestis contains 50-70 weight parts of wintergreen oil, turpene oil, or mixture thereof; and 25-45 weight parts of mixed extract of Artemisia iwayomogi and Thea sinensis as an active ingredient. The extract is isolated using water, straight or branched alcohol of 1-4 carbon atoms, or water.

Description

Composition for controlling small root fly and control method using same {Composition for controlling fungus gnat and a method using the same}

The present invention mainly relates to the control composition of the plant harmful animals and the method of using the same to control the small root fly that is a problem when cultivating horticultural crops.

The present invention relates to a composition capable of controlling small root flies, which are a problem when cultivating horticultural crops, and a method of using the same. The control composition of the present invention has no pesticide resistance, which is a problem when spraying a periodic organic synthetic insecticide for controlling small root flies, which are pests of horticultural crops, and can solve the problems of harmfulness and residual toxicity to humans and livestock after harvesting. Since the safety is ensured, the horticultural crop can be processed during the harvest season.

Fungus gnat ( Bradysia agrestis ), the root of most horticultural crops, is a major pest that reduces productivity and marketability. It occurs year-round due to the increase in plant cultivation area and continuous cultivation of crops. This takes Up to now, small root flies have been used for various synthetic insecticides, but the excessive use of synthetic insecticides has caused social problems as well as the generation of resistant harmful animals as well as environmental hazards and residual toxicity.

It is also an environmentally safe natural enemy of Hypoaspis aculeifer ), Hypoaspis Although it can use miles , etc., it has the concept of controlling only the eggs and young larvae and reducing the pest density. When the treatment time is missed, its effect is low and it is sensitive to soil insecticides, so it is limited to use in the field of crop cultivation. . Recently, the demand for eco-friendly agricultural products, which guarantees the safety of agricultural products, has soared, so as to meet the social demands for the preservation of the environmental ecosystem, small roots replacing the existing organic synthetic insecticides or limited natural products with low effectiveness and use. Research to control flies is actively underway.

Small root fly larvae and adults on PDA medium are reported to have a higher overall spread of soil-borne pathogens, Fusarium oxysporum , and higher rates of larvae than adults (Kim et al., 15 (3), pp.262 ~ 265). , 2009). Small root fly larvae feed on F. oxysporum bacteria, while adult lice spread on the body. Fluorescent transgenic F. oxysporum bacteria were prepared and fed to small root fly larvae. The bacteria were distributed along the digestive tract. As such, damage caused by phytopathogen-mediated damage by small root flies is also serious. Tests were conducted on a simple and easy way to observe the packaging occurrence of small root flies that are causing damage to colored peppers. Potatoes, sweet potatoes, carrots, garlic, radishes, It is reported that a large number of onion slices were attracted to potato slices (Jeon et al., Vol. 43, No. 2, No. 135, 2004. 6, pp. 129 ~ 134). Also, from 1998 to 1999, we examined the pests of eggplants, peppers, cabbages, watermelon cucumbers, melons, and tomato seedlings that were being grown in 11 nurseries. Two species of genus, three kinds of snails, 2 and 3 genus were found and the most problematic pest was small root flies (Kim et al., Journal of the Korean Society of Applied Entomology 39 (2) pp.89 ~ 97, 2000).

As described above, small root flies in addition to seedlings grown in nurseries, damage to the plants, causing damage to most crops, the damage continues to increase.

In the case of the development of control agents using natural materials, mushroom flies ( Lycoriela mali ) and hair flies ( Coboldia ) with low toxicity selective toxicity fuscipes), and in that recent yukmyojang small roots are questioned in Paris (Bradysia agrestis)) After a screening directional herbal plant essential oil of the plant 60 species and 100 types for controlling the development jokdori pool (slender, Asarum sieboldii ) showed that larvae were active in hairy flytail and long-bearing mushroom flies. The larval active ingredients of sessin are phenylpropanoids (z) -asarone ((z) -asarone), methyl-eugenol, myristicine, and safrole. N-pentadecane, which is a saturated, unbranched hydrocarbon, and eucarvone, which is a monoterpenoid, were identified. However, the above studies have not demonstrated the effect on small root flies that are problematic in horticultural crops or nurseries.

As such, the detailed technical establishment in relation to the control of small root flies is still weak, and the development of biological control means is insignificant, and most of them depend on organic synthetic insecticides.

On the other hand, organic synthetic insecticides that control small root flies in horticultural crops include thiamethoxam granular hydrate, clotianidine liquid hydrate, chlorfluazuron emulsion, 미 imidacloprid hydrate, acetamiprid hydrate, bifenthrin? Imidacloprid. The hydrating agent, the lufenuron emulsion, the lufenuron emulsion and the diflubenzuron hydrating agent are registered and used (2010 Korea Crop Protection Association, http://www.koreacpa.org).

Researches on biological control such as biopesticides, natural enemies and microorganisms to replace the organic synthetic pesticides are actively conducted, but most natural pesticides and natural microorganisms have a weak control effect or extremely limited effects, and are expensive. Because of its effectiveness and economic feasibility, it has not been well received by farmers and has not succeeded as a substitute for chemical pesticides to realize eco-friendly agriculture.

Therefore, the present invention can effectively control small root flies (fungus gnat, Bradysia agrestis ) of horticultural crops while ensuring no harm to environment and human beings , and ensuring the safety of agricultural products, and similar to the case of spraying chemical pesticides (organic insecticides). By controlling small root flies at the level, it is possible to replace chemical pesticides, to produce safe agricultural products without pesticide contamination problems, and to control harmful animals even when mixed with conventional chemical pesticides or sprayed in the middle of chemical pesticide treatment. It is possible to provide a composition for controlling small root flies that can contribute to reducing the number of spraying of chemical pesticides, and a method for controlling small root flies using the same.

In order to achieve the above technical problem, an example of the present invention is a small root fly (fungus gnat, Bradysia) containing a plant essential oil and plant extracts agrestis ) provides a composition for controlling.

Composition for controlling small root flies according to the present invention

a) wintergreen oil, terpene oil, or mixtures thereof; And

b) mixed extract of heather and tea tree

It may be to include as an active ingredient.

Wintergreen oil (wintergreen oil, CAS No. 119-36-8) used in the present invention is wintergreen (Gauteria procumbens, Gaultheria procumbens ) is an essential oil obtained by distillation of the leaf of the leaf.

Terpene oil (CAS No. 8006-64-2) used in the present invention is obtained from various saline waters ( Pinus spp.), Pine (segment and collection), oleoresin (distillation) And separation), and extraction of gum rosin, gum turpentine, and residues. They are widely used for aromatherapy, sterilization, disinfection and insect repellent.

Heat collector used in the present invention ( Artemisia iwayomogi ) is an asteraceae shrub whose leaves are effective for diuresis, edema , hepatitis and jaundice. It is distributed in Korea, Japan, Sakhalin, Altai and Siberia.

The tea used in the present invention (Thea sinensis ) contains a lot of triterpenoid saponins (CAS No. 8047-15-2).

The mixed extract of the heat collector and the tea tree means that the heat extractor and the tea tree are extracted with at least one extraction solvent selected from the group consisting of water, linear or branched alcohols having 1 to 4 carbon atoms, ethyl acetate, and hexane. In the present specification, the 'mixture extract of heat keeper and tea tree' is a mixture of the heat keeper and tea tree extracted with water, at least one extraction solvent selected from the group consisting of linear or branched alcohols having 1 to 4 carbon atoms, ethyl acetate, and hexane. The thing or the heat extractor, the heat extractor extract extracted with water, at least one extraction solvent selected from the group consisting of linear or branched alcohols having 1 to 4 carbon atoms, ethyl acetate, and hexane, and the tea tree with water, having 1 to 4 carbon atoms It may be a mixture of tea tree extract extracted with at least one extraction solvent selected from the group consisting of straight chain or branched alcohol, ethyl acetate, and hexane.

In a preferred embodiment, the extraction solvent may be 50 to 99% (v / v) aqueous solution of ethanol or aqueous methanol solution, most preferably 50 to 99% (v / v) aqueous solution of ethanol.

Plant extract of the present invention may be prepared according to a conventional method for producing a plant extract, for example, but may be by cold extraction, hot extraction, heat extraction or reflux extraction method, but is not limited thereto. When the extraction solvent is water, it may be by hot water extraction, and when the extraction solvent is alcohol, it may be by reflux extraction.

In addition, the extract may be a fraction obtained by performing an extraction process with the extraction solvent, and further performing a step of fractionating with at least one solvent selected from the group consisting of hexane, methylene chloride, acetone, ethyl acetate, and chloroform. have.

The extraction solvent and / or fractionation solvent in the extraction and / or fractionation may be used in an amount of 1 to 5 L, preferably 1 to 3 L, based on 1 kg of plant material (heat collector, tea tree, or mixture thereof), but is not limited thereto. It is not.

The extraction and / or fractionation site is not particularly limited, but may be one or more sites selected from the group consisting of whole plants, leaves, fruits and the like of heather and tea trees.

In order to maximize the extraction of the active ingredient, the extraction temperature may be 4 to 120 ℃, preferably 10 to 100 ℃, more preferably 20 to 50 ℃, extraction time is 36 to 60 hours, preferably 42 To 54 hours, more preferably 46 to 50 hours, but is not limited thereto. The extraction process may be performed using a conventional extraction device, an ultrasonic mill extractor or a fractionator, but is not limited thereto. The prepared extract may then be concentrated under reduced pressure filtration and / or drying to remove the solvent, and the reduced pressure filtration may be carried out by, for example, a low pressure reduced pressure concentration method using a reduced pressure concentrator, and the drying may be performed by, for example, a freeze drying method. It may be, but is not limited thereto.

In a specific embodiment of the present invention, the plant extract can be prepared by adding reflux to the plant by adding an aqueous solution of ethanol, and then filtering the obtained extract using a filter paper and concentrated by vacuum reduction, and then lyophilized.

In particular, in the composition of the present invention, saponin is one of the plant components and has both a water-soluble part and a fat-soluble part to maximize the natural surfactant effect, and can be used as a powerful natural surfactant as a beneficial ingredient for botanicals, livestock, and human health. It has excellent prevention and control effect against pests, and is a plant-derived natural substance that is safe to use in combination with other pesticides and fertilizers.

Specifically, the composition for controlling small root fly

50 to 70 parts by weight, preferably 56 to 64 parts by weight of winter green oil, terpene oil, or mixtures thereof; And

25 to 45 parts by weight (based on the weight of the dry matter), preferably 29 to 41 parts by weight of the mixed extract of the heather and tea tree

Including,

In the mixed extract of the heat keeper and tea tree, the content of the heat keeper or heat keeper extract in the heat keeper and tea tree mixture or the mixture of the heat keeper extract and the tea tree extract is 15 to 25 parts by weight (based on dry weight), preferably 17 To 23 parts by weight, the content of tea or tea tree extract may be 10 to 20 parts by weight (based on the weight of the dry matter), preferably 12 to 18 parts by weight.

More specifically, the composition for controlling small root flies

50 to 70 parts by weight, preferably 56 to 64 parts by weight of winter green oil; And

Including,

In another example, the composition for controlling small root flies

50 to 70 parts by weight, preferably 56 to 64 parts by weight of terpene oil; And

Including,

In another example, the composition for controlling small root flies

30 to 40 parts by weight, preferably 33 to 37 parts by weight of winter green oil;

20 to 30 parts by weight, preferably 23 to 27 parts by weight of terpene oil; And

Including,

The composition for controlling small root flies may further include a surfactant, wherein the content of the surfactant in 100 parts by weight of the total composition containing the surfactant is 2 to 8 parts by weight, preferably 4 to 6 parts by weight. It may be wealth.

In one embodiment of the present invention, the small root fly control composition is 30 to 40 parts by weight, preferably 33 to 37 parts by weight, terpene oil 20 to 30 parts by weight, preferably 23 to 27 parts by weight of winter green oil, 15 to 25 parts by weight of the heat extractor extract (based on dry weight), preferably 17 to 23 parts by weight, 10 to 20 parts by weight of tea tree extract (based on dry weight), preferably 12 to 18 parts by weight, and surfactant 2 to 8 parts by weight, preferably 4 to 6 parts by weight.

The content range of such components is a range defined to obtain high control efficiency, such as 80% or more control efficiency in the commercialization.

The content of the heat extractor extract and the tea extract is the content of the heat extractor extract portion and the content of the tea extract portion in the mixed extract of the heat extractor and tea tree, which is expressed as the weight of the dried product from which the solvent is removed from the extract.

The surfactant usable in the composition for controlling small root flies of the present invention may be at least one selected from the group consisting of polyoxyethylene sorbitan lauryl, sodium dodecyl benzenesulfonate, silicone polyether copolymer, and the like.

The composition according to the present invention has an insecticidal effect, a repellent effect, a feeding inhibitory effect. Secondary metabolites of plants are widely used in various industries due to their types and functions.

Another example of the present invention provides a method for controlling small root fly comprising the step of applying the composition for controlling small root fly to a crop, preferably a horticultural crop.

At this time, the composition for controlling small root fly can be diluted and used at an appropriate magnification, for example, 500 times or less (eg, 10 to 500 times), preferably 300 times or less (such as 10 to 300 times), based on volume. More preferably, the dilution ratio can be used at a dilution rate of 200 times or less (eg, 10 to 200 times), more preferably 100 times or less (eg, 10 to 100 times).

The diluent used for dilution of the control composition of the present invention is not particularly limited and may be a diluent commonly used in the art, for example, water may be used.

In addition, the application amount of the small root fly control composition is 0.1 to 3L per unit area (1m ² ), preferably 0.5 to 2.5L, more preferably 1 based on a 200-fold dilution in order to obtain an effective control effect It is good that it is to 2L.

The application form of the composition for controlling small root flies may be spraying, coating, and the like which are commonly used forms.

In the control method of the present invention, the composition is sprayed on the soil around the soil of the horticultural crop, but is preferably sprayed repeatedly three to three times with a treatment interval of 3 to 7 days.

As a specific example, 100 parts by weight of the composition stock solution containing 35 parts by weight of winter green oil, 25 parts by weight of terpene oil, 20 parts by weight of heat extractor extract, 15 parts by weight of tea tree extract and 5 parts by weight of surfactant, was diluted 200-fold to 3 Spray on soil around the horticultural crops but late afternoon or early morning when the sun is weak.

When spraying the composition of the present invention to the soil around the soil of the horticultural crops cultivated periodically to control the small root flies to a similar level as when spraying organic synthetic insecticides can reduce the use of synthetic insecticides and produce safer agricultural products.

When the horticultural crop small root fly control composition of the present invention is sprayed around the base, the skin of the small surface of the small root fly is strongly stimulated, and the bioprotective function is sharply lowered, and the feeding and digestive function is inhibited. Control effects such as insecticidal effect, repellent effect and feeding inhibition effect on root flies.

The main component of the horticultural crop small root fly control composition according to the present invention is a plant secondary metabolite, which is suitable for eco-friendly farming, which is not possible to spray organic synthetic insecticides in principle, and has no harmful and residual toxicity to humans and livestock. Since the safety is ensured, the horticultural crop can be processed during the harvest season. When spraying these compositions, small root fly control effect of horticultural crops is effective for more than 7 days after spraying, and is a safe control material that can replace organic synthetic insecticides because it is safe to crops. In addition, it is possible to control small root flies even if mixed with chemical pesticides or sprayed in the middle of the treatment can greatly contribute to reducing the number of spraying chemical pesticides.

Crops to which the composition of the present invention is applicable include fruit vegetables, leafy vegetables, root vegetables, etc. The fruit vegetables include eggplants, peppers, strawberries, watermelons, cucumbers, melons, tomatoes, green peppers, pumpkins, etc., and leafy vegetables include Chinese cabbage, leek, Lettuce, and the like, and root vegetables may include radish and the like.

Another example of the present invention provides a small root fly control agent (product) comprising the composition for small root fly control. The small root fly control agent can be formulated as a concentrate and can be used by the end user in a suitable dilution ratio. The control agents according to the invention per se are flowable formulations, suspensions, microsuspensions, emulsions (e.g. suspoemulsions, microemulsions), powders (e.g. wettable powders), granules which are treated in the soil and which provide plant protection. It can be formulated in the form of concentrates, pastes and the like.

The small root fly control agent is 0.1 to 99% by weight, preferably 10 to 75% by weight, more preferably 20 to 60, based on the weight of the active ingredient (plant essential oil and plant mixture extract) of the small root fly control composition It may be included in an amount by weight, and as balance, at least one surfactant and / or any other inert ingredients known in the art, such as protective colloids, adhesives, thickeners, thixotropic agents, penetrants, preservatives, Solid and / or liquid carriers such as water may be further included with stabilizers, antifoams, cryoprotectants, metal ion sequestrants, dyes, pigments, colorants and polymers. In addition, the small-root fly control agent of the present invention may further comprise a carrier of natural or synthetic, organic or inorganic material to facilitate the application of plants, seeds or soil, the carrier is for example shea butter, cyclodextrin and the like It may be one or more selected from the group consisting of.

The plant essential oil of the present invention can be easily purchased, and plant extracts can also be manufactured in farmhouses by a simple process of dissolving in water at a relatively low concentration after the plant extract is also prepared by methods such as hot water extraction. There is no problem of resistance in the application of periodic organic synthetic pesticides to control small root flies of horticultural crops. Processing is possible.

1 is a graph showing the small root fly control effect in the plant watermelon field of the composition of Example 1 (Y axis represents the control value (%)).
2 is a graph showing the effect of small root fly control in the strawberry field of the composition of Example 1 (Y axis represents the control value (%)).
Figure 3a is a photograph showing a small root fly object inhabiting watermelon seedlings badge, Figure 3b is a photograph showing a small root fly individual inhabiting the strawberry planting field.
Figure 4a shows the state of the strawberry-free treatment, it can be seen that the flower wilted with a small root fly damage, Figure 4b is showing the state of the strawberry treated by diluting the sample 1 of Example 1 with water 200 times, It can be seen that normal growth without damage by small root flies.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, these are only for illustrating the present invention, and the scope of the present invention is not limited by these examples.

Example 1. Preparation of Control Composition

1.1. Preparation of Plant Extracts

The heather leaves (Cheolhan Pharmacy, Korea), and the tea tree fruit (Samyoung Food Raw Materials Co., Ltd., Korea) were put in a dryer and dried for 48 hours at 70 ℃. The dried heat collector and tea tree samples were cut to a size of 1 cm or less using a power cutter. The shredded heat collector and the tea tree samples were mixed at the mixing ratios shown in Table 1 below, respectively. 1 kg of the mixture was immersed in 2 L of 95% (v / v) ethanol, and then extracted at room temperature for 48 hours. The obtained extract was filtered and concentrated under reduced pressure so that the filtrate was 10 to 30% by weight relative to the weight to prepare a concentrate.

1.2. Preparation of Control Composition

The plant extract concentrate obtained in Example 1.1 was mixed with plant essential oil winter green oil, and terpene oil in a weight ratio as described in Table 1 below to prepare a composition for control. The treatment concentration and the method of use of the prepared control composition were as described in Table 1.

Composition ratio of the composition for the control of small root fly Raw material name Sample 1 Sample 2 Sample 3 Addition ratio (%) Addition ratio (%) Addition ratio (%) Winter Green Oil 35% (w / v) 0% (w / v) 60% (w / v) Terpene Oil 25% (w / v) 60% (w / v) 0% (w / v) Heat Keeper Extract 20% (w / v) 20% (w / v) 20% (w / v) Tea tree extract 15% (w / v) 15% (w / v) 15% (w / v) Surfactants 5% (w / v) 5% (w / v) 5% (w / v) Sum 100% 100% 100%

Example 2. Watermelon by Composition Treatment Seedling Small root flies Control effect test

Watermelon (speed, nongwoo seed), the then 30 days from after the tray yukmyosang grafted on rootstock growth, square plastic pot transplantation (14cm x 14cm x 12cm) and small roots Paris (Bradysia agrestis) larvae (small roots nature occurred in the packaging Fly larvae were used for testing in the laboratory while incubating 5] per pot.The transplanted watermelon seedlings were subjected to soil treatment once with Samples 1 to 3 of Table 1, and the volume was selected to select an appropriate treatment concentration of the sample. Diluted with water 100 times, 200 times, and 400 times as a reference, the resultant was treated in an amount of 2 L m ⁻¹ based on the dilution volume volume 5. After 5 days, the control effect was investigated and the results are shown in Table 2. The untreated group means a group not treated with the sample.

Small Root Fly Control Effect of Watermelon Seedling of the Composition of the Present Invention Name of sample Control effect by dilution concentration x100 x200 x400 Worms Control price (%) Worms Control price (%) Worms Control price (%) Sample 1 4.7 ± 0.3 93.3 4.3 ± 0.3 86.7 3.3 ± 0.3 66.7 Sample 2 4.0 ± 0.0 80.0 3.3 ± 0.3 66.7 2.7 ± 0.3 53.3 Sample 3 3.3 ± 0.3 66.7 2.3 ± 0.3 46.7 1.7 ± 0.3 33.3 No treatment 0.0 ± 0.0 - 0.0 ± 0.0 - 0.0 ± 0.0 -

When the sample 1 containing both the winter green oil and the terpene oil was diluted to 200 volume times or less, the effect of controlling small root flies was very good, and the effect was slightly poor in the 400 volume times dilution treatment. Sample 2, which does not include the one-ter-green oil, and sample 3, which does not contain the terpene oil, were slightly less effective than the sample 1. Therefore, it can be seen that in the case of Sample 1, the dilution factor is preferably 200 vol. In addition, since the effect of Sample 1 is remarkably superior to Samples 2 and 3, the synergistic effect of the two plant essential oils can be clearly seen.

In addition, in order to compare the control effect of the composition of the present invention, diflubenjuron liquid water-repellent agent [Sampo Korea, (Korea)], which is a conventional synthetic insecticide used to treat the control effect obtained three times at intervals of 10 days after the generator It is shown in Table 3 below.

Control Effect of Small Root Flies of Watermelon Seedlings of Existing Synthetic Pesticides Synthetic insecticides Active ingredient Treatment amount per 20 liters of water Treatment method Treatment frequency and control effect (%) 1 time Episode 2 3rd time Diflubenzuron Liquid Emulsifier 14 wt% 8 g Generator 10 days 74.7 85.0 88.3

As shown in Table 3, it can be seen that the composition for controlling the present invention has a control effect equivalent to or higher than that of the existing synthetic insecticide.

Example 3. Facility watermelon field by composition treatment Small root flies Control effect test

20 days after watermelon establishment in the facility watermelon field (Hanan, Gyeongnam) Samples 1, 2, and 3 of the composition of Example 1 were diluted 200 times by volume with water and treated with soil 1, 2, and 3 times at 5-day intervals. . At this time, the throughput was sufficiently applied to the soil at 2 L m ⁻¹ based on the diluent volume. After 5 days of treatment, the control effect was investigated and shown in FIG. 1 [the number of treatments is described later (samples 1-1, 1-2, and 1-3), (samples 2-1, 2-2, and 2-). 3), (samples 3-1, 3-2, and 1-3).

As confirmed in Figure 1, Samples 1, 2, and 3 were all shown to increase the small root fly control effect in proportion to the number of treatments. In particular, sample 1 showed 87.4% high control effect in one treatment, while sample 2 showed 81.4% control in three treatments, and sample 3 showed more than 60% control in three treatments. . Therefore, in order to effectively control small root flies in the facility watermelon field, it was investigated that it is preferable to spray the sample at least once, preferably at least three times.

Example 4. By treatment of composition Strawberry field Small root flies Control effect test

The composition was prepared, treated and investigated in the same manner as in Example 3 30 days after strawberry formulation in the facility strawberry field (Hadong, Gyeongnam).

The obtained results are shown in FIG. 2 [the number of treatments is described later (Samples 1-1, 1-2, and 1-3), (Samples 2-1, 2-2, and 2-3), and (Sample 3). -1, 3-2, and 1-3).

As can be seen in Figure 2, as in the watermelon watermelon, samples 1, 2, and 3 were all shown to increase the small root fly control effect in proportion to the number of treatments. In particular, sample 1 showed a high control effect of 84.2% in one treatment, while samples 2 and 3 showed a control effect of 60% or more in the three treatments (80.0% or more in sample 2). Therefore, in order to effectively control small root flies in the facility strawberry field, it was investigated that it is preferable to spray the sample at least once, preferably at least three times.

Example 5. Crop safety test by composition treatment

In order for the control composition of the present invention to be usefully applied to crops, small root fly control effect must be excellent at the horticultural crop plantation target, and safety for crops must be secured.

Thus, in order to determine the effect on the various crops of the control composition of the present invention, the sample 1 stock solution of Example 1 was diluted with 100 volumes or 200 volumes by water and sprayed with 2 L m ⁻¹ . Table 1 below shows the results of the crown irrigation on day 1, day 3, day 5 and day 10 after spraying.

Crop Safety Comparison by Composition Treatment division crops Weakness (0-5) ^* 100-fold dilution 200-fold dilution 1 day after processing 3 days after processing 5 days after processing 10 days after processing 1 day after processing 3 days after processing 3 days after processing 10 days after processing Fruit vegetables Branch 0 0 0 0 0 0 0 0 pepper 0 0 0 0 0 0 0 0 Strawberry 0 0 0 0 0 0 0 0 watermelon 0 0 0 0 0 0 0 0 cucumber 0 0 0 0 0 0 0 0 melon 0 0 0 0 0 0 0 0 tomato 0 0 0 0 0 0 0 0 pimento 0 0 0 0 0 0 0 0 pumpkin 0 0 0 0 0 0 0 0 Leafy vegetables cabbage 0 0 0 0 0 0 0 0 chives 0 0 0 0 0 0 0 0 Lettuce 0 0 0 0 0 0 0 0 Root vegetables radish 0 0 0 0 0 0 0 0

* Degree of weakness: month view

(0: No damage (damage), 1: 1-10% damage, 2: 11-30% damage, 3: 31-50% damage, 4: 51-80% damage, and 5: 81% or more damage)

As confirmed in Table 4, it can be seen that the composition according to the present invention is very safe for crops and suitable for use in environmentally friendly crop plantations.

Claims

a) wintergreen oil, terpene oil, or mixtures thereof; And
b) mixed extract of heather and tea tree
To include a small root fly control composition as an active ingredient.

The method of claim 1,
The extract of the heat keeper and tea tree is
A mixture of a heat collector and a tea tree, extracted with water, at least one extraction solvent selected from the group consisting of linear or branched alcohols having 1 to 4 carbon atoms, ethyl acetate, and hexane; or
The heat collector was extracted with water, at least one extraction solvent selected from the group consisting of linear or branched alcohols having 1 to 4 carbon atoms, ethyl acetate, and hexane, and the tea tree was water, straight or branched with 1 to 4 carbon atoms. A mixture of tea tree extract extracted with at least one extraction solvent selected from the group consisting of topographic alcohol, ethyl acetate, and hexane
Phosphorus, small root fly control composition.

The method of claim 2,
The small root fly control composition may be 50 to 70 parts by weight of winter green oil, terpene oil, or a mixture thereof; And 25 to 45 parts by weight of the mixed extract of the heather and tea tree,
In the mixed extract of the heat keeper and tea tree, the content of the heat keeper or heat keeper extract in the heat keeper and tea tree mixture or the mixture of the heat keeper extract and tea tree extract is 15 to 25 parts by weight, and the content of the tea or tea tree extract is 10 To 20 parts by weight,
Composition for small root fly control.

The method of claim 3,
The small root fly control composition is 50 to 70 parts by weight of winter green oil; And 25 to 45 parts by weight of the mixed extract of the heather and tea tree,
In the mixed extract of the heat keeper and tea tree, the content of the heat keeper or heat keeper extract in the heat keeper and tea tree mixture or the mixture of the heat keeper extract and tea tree extract is 15 to 25 parts by weight, and the content of the tea or tea tree extract is 10 To 20 parts by weight,
Composition for small root fly control.

The method of claim 3,
The small root fly control composition is 50 to 70 parts by weight of terpene oil; And 25 to 45 parts by weight of the mixed extract of the heather and tea tree,
In the mixed extract of the heat keeper and tea tree, the content of the heat keeper or heat keeper extract in the heat keeper and tea tree mixture or the mixture of the heat keeper extract and tea tree extract is 15 to 25 parts by weight, and the content of the tea or tea tree extract is 10 To 20 parts by weight,
Composition for small root fly control.

The method of claim 3,
The small root fly control composition is 30 to 40 parts by weight of winter green oil; 20 to 30 parts by weight of terpene oil; And 25 to 45 parts by weight of the mixed extract of the heather and tea tree,
In the mixed extract of the heat keeper and tea tree, the content of the heat keeper or heat keeper extract in the heat keeper and tea tree mixture or the mixture of the heat keeper extract and tea tree extract is 15 to 25 parts by weight, and the content of the tea or tea tree extract is 10 To 20 parts by weight,
Composition for small root fly control.

The method of claim 3,
The small root fly control composition further comprises a surfactant,
The amount of the surfactant further included is 2 to 8 parts by weight based on 100 parts by weight of the total composition further including the surfactant.
Composition for small root fly control.

The method of claim 7, wherein
The small root fly control composition includes 30 to 40 parts by weight of winter green oil, 20 to 30 parts by weight of terpene oil, 15 to 25 parts by weight of heat extractor extract, 10 to 20 parts by weight of tea tree extract, and 2 to 8 parts by weight of surfactant. That is,
Composition for small root fly control.

The method of claim 7, wherein
The surfactant is at least one selected from the group consisting of polyoxyethylene sorbitan lauryl, sodium dodecyl benzenesulfonate, and silicone polyether copolymer,
Composition for small root fly control.

Claims 1 to 9 comprising the step of applying to the crop the composition for controlling small root flies of any one of claims,
How to control small root flies.

The method of claim 10,
Characterized in that for diluting the composition for controlling small root fly 10 to 200 times in water,
How to control small root flies.

The method of claim 11,
The application amount of the small root fly control composition is 0.1 to 3L per unit area (1 m ² ) based on a 200-fold dilution,
How to control small root flies.

The method of claim 10,
Characterized in that for spraying the composition for the control of small root flies to the soil around the soil of the crop 2 to 3 times with a treatment interval of 3 to 7 days,
How to control small root flies.

10. The method of claim 9,
The crop is at least one selected from the group consisting of fruit, leafy, and root vegetables,
How to control small root flies.

Claims 1 to 9 comprising the small root fly control composition of any one of claims 1 to 9 in an amount of 0.1 to 99% by weight,
Small Root Fly Control.