KR20180062787A - Eco-friendly cloud spread agent for preventing plant pest and plant disease - Google Patents

Abstract

The present invention provides a fungicidal and insect repellent eco-friendly fogging agent comprising 20 to 30 parts by weight of a natural oil, 10 to 50 parts by weight of propylene glycol, 40 to 60 parts by weight of water and 2.5 to 4 parts by weight of a surfactant.
Since the fogging and spreading agent according to the present invention includes natural oil and propylene glycol, it can achieve excellent insecticidal and germicidal effects even when introduced into equipment with low spray pressure, and can minimize the occurrence of secondary pollution It can be effectively used for crop control.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an eco-friendly cloud spread agent for preventing pests and plant diseases,

The present invention relates to an environmentally friendly fogging and spreading agent which can be utilized for the control of pathogens causing plant insects and plant diseases.

In recent years, as interest in health has increased, interest and demand for environmentally friendly agricultural chemicals or agricultural chemicals have also increased, and the area of cultivation area of agricultural products has also increased greatly.

Environmentally friendly agricultural products means agricultural products grown without using organic synthetic pesticides and chemical fertilizers. Non-chemical agricultural products means crops grown using organic synthetic pesticides and chemical fertilizers used within one-third of the recommended dosage .

However, the method of cultivating crops without using organic synthetic pesticides is that crops are exposed to the risk of pests and are cultivated in an unsafe condition. Therefore, the yield of agricultural products is lower than that of cultivated with organic synthetic pesticides , There is a problem that appearance characteristics of harvested agricultural products are not easy to be sold, and various researches are being conducted on environmentally friendly methods for preventing pests caused by agricultural products instead of organic synthetic pesticides.

For example, Korean Patent Publication No. 10-1085661 relates to an environmentally-friendly fogging and aerosol agent using biodiesel, wherein glycerin, biodiesel, water and a vegetable surfactant are mixed, And discloses a description of a haze and a mist which is not used at all.

As another example, Korean Patent Publication No. 10-1151383 relates to an environmentally friendly vegetable base oil useful for disinfection of space spraying and prevention and a method for producing the same. The vegetable oil, vegetable glycerin, alcohol, sodium hydroxide and water are stirred at high speed Discloses a technology relating to an environmentally friendly vegetable base oil having a diffusion effect and a manufacturing method thereof.

However, since the mist, fogging agent or mist diffusion agent disclosed in Document 1 and Document 2 has a high viscosity including vegetable oil and glycerin, spraying is difficult when introduced into equipment with low spray pressure, and electrodeposition with glycerin There is a problem that secondary contamination is caused due to the effect, and since the average particle size of the particles sprayed at the time of spraying is 30 mu m or more, sufficient diffusion can not be achieved and it is difficult to effectively control the problem. Research on environmentally friendly methods is needed.

Korean Patent No. 10-1085661 (published on November 22, 2011) Korean Registered Patent No. 10-1151383 (Published on May 31, 2012) Korean Patent No. 10-0456808 (published on October 29, 2001) Korean Patent No. 10-0952912 (published on April 16, 2010)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an insecticidal and germicidal composition, Which is an environmentally friendly fogging agent.

In order to accomplish the above object, the present invention provides a method for sterilizing and insecticide comprising 20 to 30 parts by weight of natural oil, 10 to 50 parts by weight of propylene glycol, 40 to 60 parts by weight of water and 2.5 to 4 parts by weight of a surfactant Friendly fogging and spreading agent.

The natural oil may be a vegetable oil containing at least one member selected from the group consisting of waste cooking oil, rice bran oil, soybean oil, rape oil, corn oil, castor oil and sunflower seed oil, or a vegetable oil including taro, lard, chicken oil and whale oil Or an animal oil containing at least one selected from the group consisting of biodiesel.

The fogging agent further comprises 2.5 to 4 parts by weight of an insect repellant spice selected from the group consisting of cinnamon, cinnamon, coriander, empire, lavender, rosemary, santorini, lemongrass, eucalyptus, tangerine, Royal, lemon eucalyptus, and thyme.

The fogging and dispersing agent may further include sulfur, calcium and clay.

The present invention also provides a method of sterilization and insecticide comprising spraying the above-described fogging agent onto a crop.

Since the fogging and spreading agent according to the present invention includes natural oil and propylene glycol, it can achieve excellent insecticidal and germicidal effects even when introduced into equipment with low spray pressure, and can minimize the occurrence of secondary pollution It can be effectively used for the control of crops against insects and plant diseases.

FIG. 1 is a result of analyzing the control rate of mildew disease after 24 to 72 hours from the control of the fogging agent according to the embodiment.

Hereinafter, the present invention will be described in detail.

The present invention provides a fungicidal and insect repellent eco-friendly fogging agent comprising 20 to 30 parts by weight of a natural oil, 10 to 50 parts by weight of propylene glycol, 40 to 60 parts by weight of water and 2.5 to 4 parts by weight of a surfactant.

The natural oil is vaporized by heating to generate mist such as fog. The fog destroys the cell walls and plasmids of the pathogens that adversely affect the crops, hinders respiration and fat metabolism of pests, and disinfects and insects And it is also environmentally friendly since it does not cause environmental pollution after biodegradation after spraying.

The natural oil may be a vegetable oil, an animal oil, a biodiesel or a mixture thereof. In particular, the vegetable oil may be a vegetable oil such as a vegetable oil, a vegetable oil, a rice bran oil, a soybean oil, a rapeseed oil, a corn oil, a castor oil, a sunflower seed oil, As a representative example, the waste cooking oil can be used after refining, which is processed by a method such as filtration and purification.

The animal oil may be a purified animal oil prepared by purifying a crude oil, a waxy oil, a fish oil, a horse oil, a mixture thereof, or a biodiesel produced from a cooking oil, corn oil or palm oil.

If the content of the natural oil is less than 20 parts by weight, the effect of disinfection and insecticidal action against pathogens and insects is reduced. If the content of the natural oil is less than 30 parts by weight Excessive amounts may interfere with the respiration and metabolism of crops and may cause problems in the growth of crops.

The propylene glycol emulsifies the natural oil to easily mix the natural oil and water. In addition, the propylene glycol physically forms a film on the leaves and stem surfaces of the crops when sprayed on the crops, thereby suppressing the penetration of pathogens and insects Or to prevent germs from germinating on the leaves and stem surfaces of crops and to act as a pesticide control adjunct to increase the residence time of the fogging agent with the natural oil on the surface of the crop. At this time, it is preferable that the propylene glycol is a grade that is acceptable for food additives.

Particularly, the propylene glycol has a low viscosity and can form fog even at low pressures as compared with a conventional fogging agent prepared using glycerin. In addition, since the propylene glycol has a uniform particle size of 5-20 mu m So that the mist diffusion agent can be effectively applied even in a narrow space or in a fine space. In addition, unlike glycerin, since the viscosity is low, it is possible to stably form fog even when introduced into equipment with low spray pressure, and it is possible to effectively prevent secondary contamination due to electrodeposition due to low viscosity.

When the content of propylene glycol is less than 10 parts by weight, there is a problem that the amount of fogging formed during water dilution is so small that the diffusion of fog is not sufficient, When the amount of the propylene glycol is more than 50 parts by weight, the content of propylene glycol is so high that the flash point of the fogging dispersant is lowered and fire or explosion may occur due to flame or outside conditions in the sprayed state.

The surfactant serves to uniformly mix the natural oil and water, and the fogging agent may include 2.5 to 5 parts by weight of a surfactant.

Preferably, the surfactant may be a nonionic surfactant or an amphoteric surfactant which does not cause the generation of carcinogenic substances and the risk of environmental hormones. Nonionic surfactants such as nonionic polyethyleneglycol, alkanolamide, polyethylene sorbitan, Amphoteric natural betaine, and the like.

When the content of the surfactant is less than 2.5 parts by weight, mixing of propylene glycol, natural oil and water is not smooth, and when the content is more than 4 parts by weight, problems that cause skin irritation due to a large amount of use may occur have.

In addition, the above-mentioned fogging diffusing agent can generate the effect of fumigation and pest control by controlling fungi and insects by generating mist by heating, including water.

For this purpose, the fogging and spreading agent may contain 40 to 60 parts by weight of water. When the content of water is less than 40 parts by weight, the flash point is lowered. When the content is more than 60 parts by weight, There is a problem that the dilution ratio of propylene glycol is increased and the amount of generated mist is lowered.

Meanwhile, the fogging agent according to the present invention may further comprise an insect repellent spice so as to effectively repel various insects inhabited by the crops during the cultivation of the crop. By using the natural plant insect repellent spice as described above, It is possible to remove the odor such as the unique oil odor and to give the fragrance.

The insect repellent spices may be selected from the group consisting of cinnamon, cinnamon, coriander, empire, lavender, rosemary, suntorn, lemon grass, eucalyptus, tangerine, penny royal, lemon eucalyptus, It is possible to control the type of the insect resistant spice to be included in the mist diffusion agent.

Preferably, the insect repellent spice may be included in a proportion of 2.5 to 4 parts by weight. When the content of the insect repellant spice is less than 2,5 parts by weight, sufficient scent is not given and sufficient insect repellent effect is achieved And further insect repellent effect can not be achieved even when the content is more than 4 parts by weight.

In addition, the fogging and spreading agent according to the present invention may further include sulfur and lime to further improve the preventive effect against pathogens, and may form a mist diffusion agent for controlling crops in the winter season have.

The sulfur serves as a fungicide for sterilizing various pathogens such as powdery mildew, black fungus or pneumoconiosis, has an insecticidal effect on pests such as aphid mites, and sulfur contains sulfur, which is an element essential for the growth of crops, It is also possible to supply the nutritional components of the crops, and the sulfur can be biologically produced and used as a water-soluble bio-sulfur.

The lime may be combined with sulfur to form a salt to increase the dissolved amount of sulfur when mixing with water and to control the pH of the mist diffusion agent. The sulfur and lime may be added at a weight ratio of 1: 2 .

The fogging and dispersing agent may contain sulfur and lime in a ratio of 1 to 3.5 parts by weight. When the content of sulfur and lime is less than 1 part by weight, the content of sulfur is low, If it is contained in an amount exceeding 3.5 parts by weight, an effect of inhibiting the growth of the crop by the sulfur contained may be generated.

The fogging and spreading agent according to the present invention as described above exhibits an effective sterilization and insecticidal effect against crop pests such as powdery mildew disease, fungus disease and black flour disease, and insect pests such as aphids, mites and moths. The same crops can be used effectively for growing fruit trees such as roses, peaches, strawberries, apples or peaches as well as fruits.

The duration of the effect of the environmentally-friendly fogging and spreading agent of the present invention may vary depending on rainfall, but is usually about 4 to 10 days. Considering the duration of the control effect, For the purpose, it is effective to spray at intervals of 3 to 7 days.

In addition, the environmentally-friendly fogging and spreading agent of the present invention should be cautious when it is applied at a low temperature of 1 ° C or lower or a high temperature of 35 ° C or higher because it may exhibit an effect of inhibiting growth on the crops. That is, when the environmentally-friendly fogging and diffusion agent of the present invention is used at low temperature and high humidity, the natural oil component does not dry out and freezes to inhibit the growth of the crop, and at the time of high temperature drying, And the effect may be different depending on the type of crop to be applied, the growing time of the crop, the cultivation mode, etc. Therefore, it is preferable to use it in consideration of this. In addition, when mixed with nutrients or other pesticides, care should be taken as there is a risk of deterioration of the effect or the occurrence of a weakness.

Since the fogging agent according to the present invention includes natural oil and propylene glycol as described above, excellent insecticidal and germicidal effects can be obtained even when introduced into equipment having low spray pressure, and the occurrence of secondary pollution It can be effectively used for the control of crops against insects and plant diseases.

The fogging and dispersing agent may be prepared by stirring natural oil, propylene glycol, water and a surfactant at a temperature of 20 to 60 DEG C for a sufficient time to prepare a fogging agent composition. After the composition is prepared, insect repellent spices are added So that the fragrance component can be prevented from disappearing.

In order to add sulfur and lime to the above-described fogging and dispersing agent, a sulfur mixture is prepared by heating sulfur and water, and a small amount of lime is repeatedly added to the prepared sulfur mixture to control the temperature that can be generated by the explosive reaction A mixture of sulfur and lime is mixed at a weight ratio of 1: 2 to prepare a sulfur and lime mixture, and the resulting sulfur and lime mixture is added to the mist diffuser to prepare a composite mist diffuser.

The above-described fogging spreading agent and the composite fogging spreading agent can be aged sufficiently for 12 to 72 hours to be effectively used for the control of crops against insects and plant diseases.

Further, the present invention provides a sterilization and insecticidal method comprising heating the above-described fogging agent to spray on the crop, wherein the fogging agent according to the present invention is sprayed through a thermal dry sprayer to form fog And can be effectively used for sterilizing and insecting crops due to its small size of fume particles.

Hereinafter, the present invention will be described in more detail with reference to examples.

The embodiments presented are only a concrete example of the present invention and are not intended to limit the scope of the present invention.

≪ Example 1 >

25 parts by weight of biodiesel, 20 parts by weight of propylene glycol (purity of 99.8%), 50 parts by weight of sterilized water, 3 parts by weight of polyethylene glycol and lavender extract were mixed and heated at 80 rpm The mixture was stirred for 60 minutes to prepare a haze dispersing agent.

≪ Example 2 >

25 parts by weight of biodiesel, 10 parts by weight of propylene glycol (purity of 99.8%), 50 parts by weight of sterilized water, 3 parts by weight of polyethylene glycol and lavender extract were mixed and heated at a rate of 80 rpm For 60 minutes to prepare a haze dispersant and stabilized for 24 hours.

≪ Comparative Example 1 &

And 5 parts by weight of propylene glycol were mixed in the same manner as in Example.

≪ Comparative Example 2 &

Except that 20 parts by weight of glycerin was used instead of propylene glycol, to prepare a haze dispersing agent.

≪ Comparative Example 3 &

A fogging dispersant was prepared in the same manner as in Example except for mixing 1 part by weight of lavender extract.

≪ Experimental Example 1 > Analysis of size and spraying range of sprayed dispersant particles

The average particle size of the sprayed mist spreading agent particles produced by spraying the fogging agent prepared by the method according to the Example and Comparative Example 2 in the closed space with the same thermal dry type spraying machine was analyzed. The average particle size analysis of the sprayed particles was analyzed using a computer image processor equipped with a double polarized beam of argon-ion laser.

As a result, the fogging agent of Comparative Example 2 was sprayed with a mist sprayer, resulting in fogging particles having an average particle size of 37.4 占 퐉. On the other hand, when the fogging agent of the Example was sprayed with a mist sprayer, Sized fogging particles. ≪ tb > < TABLE >

As a result of visually observing the range of the space through which the mist spreading agent was sprayed, it was found that the spraying range of the spraying agent of Comparative Example 2 was larger than that of the spraying agent of Comparative Example 1 And it was confirmed that the spraying range when the spraying agent of the embodiment was sprayed was the largest.

According to the results as described above, since the fogging and spreading agent according to the present invention includes natural oil and propylene glycol having low viscosity, fine mist dispersing agent particles are formed at the time of spraying, It can be predicted that not only can it effectively penetrate, but also it can be effectively used for introduction into a large-scale crop growing area with a large spraying range.

<Experimental Example 2> Measurement of area ratio and analysis of pest control effect

In order to analyze the bactericidal effect of the spraying agent on the control of plant diseases, the area ratio of the lesion was measured at 24 hours, 48 hours, and 72 hours after spraying evenly on the front and back sides of leaves of strawberry infected with powdery mildew. The results are shown in Fig.

As shown in FIG. 1, it was confirmed that the area ratio of the diseased strawberry leaves gradually decreased with the addition of the fogging agent prepared by the method according to the Example, I can prove that it has.

In addition, the haze spreading agent of the example was sprayed on the strawberry seedlings obtained in the strawberry house where the spotted mite was infested, and the mite mortality rate was measured at 72 hours, and it was confirmed that the mite died about 93% And the effect was also excellent.

<Experimental Example 3> Electrodeposition effect analysis

In order to analyze the electrodeposition effect of the produced fogging diffusing agent, the fogging diffusing agent of Examples and Comparative Example 2 was visually observed after 30 minutes passed after spraying the acrylic plate on the fogging diffusing agent.

As a result, when the fogging agent of the embodiment was sprayed, no trace of a size that could be visually confirmed was found. However, when the fogging agent of Comparative Example 2 was sprayed, the stain formed due to the hardening of the fogging agent Was visually identifiable.

As a result, it was confirmed that the electrodeposition effect did not appear when the spraying agent according to the embodiment was sprayed.

<Experiment 4>

When the fogging agent of the example and the comparative example 3 was sprayed to check the fragrance of the fogging agent, when the fogging agent of the comparative example 3 was sprayed, the oil fragrance peculiar to the biodiesel was finely detected. However, It was confirmed that the fragrance of the lavender extract was detected without detecting the odor of the biodiesel specific oil, and thus the amount of the insect spice was determined.

Claims (5)

20 to 30 parts by weight of a natural oil, 10 to 50 parts by weight of propylene glycol, 40 to 60 parts by weight of water and 2.5 to 4 parts by weight of a surfactant. The method according to claim 1,
The natural oil is a vegetable oil comprising at least one member selected from the group consisting of waste cooking oil, rice bran oil, soybean oil, rape oil, corn oil, castor oil and sunflower seed oil, or a group consisting of tallow, lard, chicken oil and whale oil Or an animal oil containing at least one species selected from the group consisting of biodiesel and biodiesel. The method according to claim 1,
2.5 to 4 parts by weight of an insect repellant spice selected from the group consisting of cinnamon, cinnamon, coriander, empire, lavender, rosemary, santorini, lemon grass, eucalyptus, tangerine, penny royal, lemon eucalyptus and thyme Wherein the extract is an extract from at least one plant selected from the group consisting of: The method according to claim 1,
Sulfur and lime. &Lt; RTI ID = 0.0 &gt; 8. &lt; / RTI &gt; A method of sterilization and insecticidal method comprising spraying a fogging agent according to any one of claims 1 to 4 on a crop.

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