KR20150106647A - Eco-friendly composition for controlling plant disease and insects and preparation method thereof - Google Patents

Abstract

Provided in the present invention are an eco-friendly composition for controlling a plant disease and insect damage and a manufacturing method thereof, coated with Neem oil on a granule composed of natural sulfur and bentonite, with excellent insecticidal and sterilizing effects with respect to the plant disease and insect damage while having no chemical injury, with extra detoxification of sulfur not required, and with stable effects due to sulfur and Neem oil slowly melt out.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a composition for controlling environmental pests and diseases,

More particularly, the present invention relates to a composition for the control of environment-friendly plant diseases and pests and diseases, which is safer to man-made shrubs, and more specifically to a method for preparing the same which does not require the legalization of sulfur, The present invention relates to a composition for controlling plant pests and diseases, which is coated with nematic oil on a granule composed of natural sulfur and bentonite, which has excellent insecticidal / bactericidal effect against plant insect pests and a method for producing the same.

Trees, and crops must be prevented in advance to prevent damages of pests and diseases, thereby enabling effective control, enabling smooth growth of plants and increasing production of crops.

Recently, the use of sulfur and vegetable nem oil has been proposed as an alternative to the prevention and control of pests and diseases for environmentally friendly organic farming of cultivated crops such as fruit trees, fruit vegetables, and bulbs.

Sulfur (S) is one of the essential essential plant nutrients. It is also used as agricultural fertilizer. It has sterilization and insecticidal action when it is applied to the soil, so it is used as natural pesticide. Most of the sulfur currently being commercialized is either desulfurized from fossil fuels (crude oil, natural gas, etc.) or taken from volcanic areas. However, since natural sulfur is highly toxic, it causes a lot of harm to crops, and therefore, it is necessary to legislate the sulfur in order to reduce the harmful effects (Patent No. 10-0908001). In addition, sulfur is usually used in the form of powder. The sulfur powder is dispersed in the air and rubs against the vinyl house and iron to cause corrosion of expensive vinyl and iron, Loss of wind and water was severe. Therefore, it has been required to develop a method for maximizing the sterilizing / insecticidal effect of sulfur while eliminating the problem of sulfur powder while preventing the harmful effect.

Azadirachta indica (Azadirachta indica) is a plant belonging to the family Meliaceae, southern Asia and south-east origin, Africa today. It is widely distributed in the tropical and subtropical regions of the Americas and Australia. The main component, Aazadirachtin, is tetranoruterenpenoid, which is derived from aphids, cabbage worms, cabbage moths, white moths, moths, beetles, It is known that there are inhibitory effects on inhibition of growth, scattering, parasitism and feeding of about 200 kinds of insect pests, including insect pests, insect pests, insect pests, and powdery pests. However, it is usually diluted with 500-1,000 times of water and sprayed. In this case, if there is a growth obstacle in cultivated crops and the concentration of nematic oil is lowered, the effect of insect growth, scattering, parasitism, to be. In particular, soft plants such as lateral rivers and fruit and vegetable plants frequently cause growth obstacles, and farmers are suffering from unexpected damage (Patent No. 10-0735065). Therefore, it has been required to develop a method that can utilize the sterilization / insecticidal effect of nematic oil while preventing weakness.

The present inventors have found that a granular composition prepared by coating a granule formed by adding a certain amount of bentonite to a liquid sulfur and coating the granules with a nimble oil is characterized in that sulfur and nematic oil slowly And can be used as a composition for controlling environmental pests and diseases, which is excellent in sterilizing / germicidal efficacy while preventing harmful effects on plants. Thus, the present invention has been completed.

Accordingly, an object of the present invention is to provide a composition for controlling environment-friendly plant and pest insects, which is formed by coating a certain percentage of nymph oil on granules made of sulfur and bentonite, and sulfur and nematic oil are gradually dissolved so as to prevent phytotoxicity against plants, .

It is still another object of the present invention to provide a method for producing a composition for controlling environment-friendly plant diseases and pests, which comprises blending a certain amount of bentonite powder with liquid sulfur to form granules, and then coating a certain percentage of nematic oil.

In order to achieve the object of the present invention,

The present invention provides a composition for controlling plant insect pests, which comprises 1 to 5% by weight of nematicide coated on granules comprising 80 to 95% by weight of sulfur and 4 to 15% by weight of bentonite.

As the sulfur used in the granules in the present invention, liquid (molten) sulfur which is not formulated is preferable. Liquid sulfur (boiling point 118 ° C) is produced by desulfurization by distillation from fossil fuels (crude oil, natural gas, etc.) and is commercially available.

The sterilization / insecticidal effect of sulfur is due to the following actions: (a) the action of gaseous sulfur and sulfur itself produced by sublimation of sulfur, (b) the action of sulfur dioxide, such as sulfur dioxide, The effect of hydrogen sulfide produced when sulfur comes into contact with the tissues of plants or bacteria, and the effect of sterilization of pathogens with high fat content by exhibiting permeability with high lipophilic property of sulfur.

In the composition of the present invention, sulfur is contained in an amount of 80 to 95% by weight. When the content of sulfur is less than 80%, the sterilizing / insecticidal effect is deteriorated. When the content of sulfur exceeds 95%, the sulfur is appropriately decomposed from the bentonite (elution).

Bentonite which can be used in the present invention is a clay mineral which is an aggregate of fine colloidal materials and exhibits high viscosity and higher cation exchange capacity than clay minerals with different color and exhibits white, gray, pale brown, pale green and the like. Bentonite is divided into two types, sodium-bentonite and calcium-bentonite, by their physical properties. Bentonite is composed of an expansive three-layered structure (Si-Al-Si) with a particle structure. In the middle layer of Ai, Al, which is 3+, is replaced by Mg, which is 2+, Which is bound to Na or Ca.

In the composition of the present invention, bentonite increases sulfur diffusion control and diffusive action (an action that decomposes sulfur and spreads the decomposed sulfur evenly). When high-temperature liquid sulfur and bentonite are mixed, part of Na or Ca of bentonite is replaced with sulfur, and sulfur enters the bentonite structure. Therefore, when the bentonite is decomposed while absorbing moisture in the composition of the present invention, the sulfur slowly melts out. As a result, the sulfur leaching is controlled so that it is not released to the soil or the atmosphere in a moment, so that the occurrence of the weakening of the plant can be prevented. This process has the same effect as a safe sulfur through a kind of legislation.

In the composition of the present invention, bentonite is preferably contained in an amount of 4 to 15% by weight. When the content of bentonite is less than 4%, there is a problem in decomposition (elution) and diffusibility of sulfur. When the content of sulfur is less than 15% / Insecticidal effect becomes weak.

The bentonite used in the present invention may be prepared by pulverizing the raw ore in the form of powder or commercially available. The particle size of the powder is preferably 200 mesh or more, but is not limited thereto.

In the composition of the present invention, granules may be prepared by a conventional molding machine after adding bentonite to liquid sulfur and mixing. The size of the granules is not limited, but is preferably 2.5 to 5 mm in diameter and 1.2 to 1.8 mm in height, and the granular form may be in the form of a split pea.

In the composition of the present invention, the sulfur-bentonite granules are coated with 1 to 5 wt.% Of nematic oil.

The coating method of nem oil is not limited and can be carried out by spraying by a conventional means such as a spreader.

In the composition of the present invention, the nim oil penetrates deeply into the pores of the bentonite when it is coated, adsorbed together with the sulfur, and the remaining oil that does not adsorb is functioning to once more protect the sulfur by coating the surface. When bentonite absorbs moisture, it slowly dissolves with sulfur, preventing the plants from being harmed, and thus exhibiting a slow-acting sterilization and insecticidal effect. In the case of molding with nematic oil mixed with sulfur-bentonite without coating, the nematic oil interferes with the granular bonding, so that the molding can not be formed, so it is easy to break and the productivity drops sharply.

In the composition of the present invention, the nematic oil is coated at 1 to 5% by weight. When the nematic oil is coated at less than 1%, insecticidal / bactericidal effect is deteriorated. When the nematicide is coated at more than 5% .

In the present invention, the term " control " means prevention or control of plant insect pests, specifically, microorganisms such as bacteria, fungi and viruses which cause plant insect pests are sterilized; It means insect pests such as aphids, cabbage worms, cabbage moths, white moths, moths, beetles, moths, insects, insects, thrips, and powdery moths.

In the present invention, 'sterilization' means not only sterilization of microorganisms but also inhibition of growth of microorganisms and inhibition of infection. Likewise, the term 'insect' in the present invention means not only to kill insects, but also to inhibit growth and propagation of insects.

Examples of phytopathogenic fungi that can be controlled by the composition of the present invention include powdery mildew of cucumber, strawberry, tomato, etc., Chinese cabbage / rootstock disease, potato scab disease, onion black rot disease scurvy, But are not limited to, cabbage worms, cabbage moths, white moths, moths, beetles, moths, moths, worms, thrips, powdered moths.

The method of using the composition for controlling plant diseases and diseases according to the present invention may be used by mixing with soil at 4.5 ~ 10 kg / 10a 3 ~ 7 days prior to planting, but the present invention is not limited thereto.

For another object of the present invention,

I) mixing 4 to 15% by weight of bentonite powder with 80 to 95% by weight of liquid sulfur;

Ii) granulating the sulfur-bentonite mixture;

Iii) coating the sulfur-bentonite granules with 1 to 5 wt% of nematic oil.

In the production process of the present invention, in step i), the liquid sulfur may further comprise filtering 5 to 20 meshes to remove impurities.

Step i) Sulfur-bentonite mixture

Liquid sulfur and bentonite and their addition amounts are the same as described above.

Since the liquid sulfur has a melting point of 118 ° C, the temperature control during the supply is continued to maintain the molten state.

The mixing can be carried out in a conventional manner. For example, mixing molten sulfur at 118 to 135 ° C in a short time (6 to 10 seconds) at a high speed (3,000 to 3,600 rpm) in a mixer, but the present invention is not limited thereto. Bentonite is highly viscous and mixing should be done in a short time to increase the effect of mixing.

Step ii) Granulation

In step i), the blended sulfur-bentonite mixture is shaped into granules of the appropriate size using a conventional molding machine.

Suitable sizes include, but are not limited to, preferably 2.5 to 5 mm in diameter and 1.2 to 1.8 mm in height, and the granular form may be in the form of a split pea.

The molded granules are cooled at room temperature.

Step iii) Nemo coating

The sulfur-bentonite granules from step ii) are coated with 1 to 5% by weight of nematic oil.

The amount of nematic oil and its coating amount is the same as described above.

The coating can be carried out by spraying by conventional means such as a spreader. For example, a sprayer capable of spraying through an automatic sprayer equipped with a hot wire so that coagulation can be prevented because the nematic oil solidifies at a temperature of 15 ° C or less, and adjusting the amount of injection so that the metered amount can be input can be used.

According to another aspect of the present invention, there is provided a method for controlling plant pests, which comprises coating 80 to 95% by weight of sulfur and 4 to 15% by weight of bentonite with 1 to 5% ≪ / RTI >

The composition for controlling plant diseases and insects according to the present invention is excellent in insecticidal / bactericidal effect, is stable, and has little weakness to plants, thereby inhibiting the growth of harmful bacteria and insect pests, thereby alleviating damage to crops and maintaining healthy crops, It can be used as an environmentally friendly organic material suitable for the prevention and control of disease and soil damage and suitable for the management of pests and diseases safe for man-made ships.

In particular, the composition for controlling plant insect pests of the present invention has a structure in which sulfur and sulfur are substituted for Na and Ca of the bentonite structure, and the nematic oil is absorbed by the pit of bentonite, so that the sulfur and nematic oil are gradually melted, But also exhibits a sterilization / insecticidal effect for a sufficient period of time for the plant insect pests.

In addition, in the composition for controlling plant diseases and diseases according to the present invention, sulfur has a fertilizing effect that contributes to the yield of crops by acting as one of the essential plant nutrients in addition to the sterilizing / insecticidal effect, and there is no need to legislate sulfur.

Also, the composition for controlling plant insect pests according to the present invention is granule type, easy to use and safe. On the other hand, when spraying sulfur and nematic oil with powder sulfur and liquid, it takes a lot of time for liquefaction, and there are safety problems such as having separate safety equipment when spraying.

1 is a manufacturing process diagram of an example of the manufacturing method according to the present invention.
Fig. 2 is a photograph of the composition for controlling plant diseases and insects prepared in Production Example 1. Fig. FIG. 2A is a photograph showing sulfur-bentonite granules before coating with nemo oil, and FIG. 2B is a photograph showing sulfur-bentonite granules (composition of the present invention) coated with nematic oil.
Figs. 3A, 3B and 3C are photographs showing the effect of controlling the plant pesticide-controlling composition prepared in Preparation Example 1. Fig.
FIG. 4 is a photograph showing the process of admixing the reference amount and the replenishment amount of the composition for controlling plant insect pests of the present invention to the soil, respectively.
FIGS. 5A, 5B, and 5C are photographs showing the appearance of weakness of the target plants over 10, 20, and 30 days after the blend treatment of the plant disease resistance control composition of the present invention.

Hereinafter, the configuration and effects of the present invention will be described in more detail with reference to specific embodiments in order to facilitate understanding of the present invention. However, the following examples are merely illustrative of the present invention in order to more clearly understand the present invention, and the scope of the present invention is not limited by the following examples.

Example

Production Example 1

85 kg of the liquid sulfur (S-Oil Co., Ltd.) having a temperature of 138 DEG C was filtered through 10 mesh, and 14 kg of bentonite powder (ASHAPURA INTERNATIONAL LTD.) Having a particle size of 200 mesh was added to the mixer After mixing, the mixture was molded into a spherical granule having a diameter of about 3 mm and a height of 1.5 mm in a molding machine (SANDVIK), followed by cooling at room temperature (Fig. 1 kg of a sprayer (Daeyoung Engineering Co., Ltd.) was sprayed onto the cooled sulfur-bentonite granules to prepare a composition for controlling plant insect pests of the present invention. 2B shows a photograph of a composition for controlling the pest insects of granular plant.

Production Example 2

89.1 kg of the liquid sulfur (S-Oil Co., Ltd.) having a temperature of 140 ° C was filtered through 10 mesh, and the resulting mixture was placed in an inline mixer (manufacturer IKA). 9.9 kg of bentonite powder (ASHAPURA INTERNATIONAL LTD. And the mixture was molded into a spherical granule having a diameter of about 3 mm and a height of 1.5 mm in a molding machine (SANDVIK), followed by cooling at room temperature. 1 kg of a sprayer (Daeyoung Engineering Co., Ltd.) was sprayed onto the cooled sulfur-bentonite granules to prepare a composition for controlling plant insect pests of the present invention. The granular plant pesticide-controlling composition thus prepared was as shown in Fig. 2B.

Experimental Example 1: Analysis of the decomposition rate (slow-release) of the composition

3 g of the composition sample prepared in Preparation Example 1 was placed in 30 ml of water at room temperature, and after 2 hours had elapsed, the through rate was examined by passing through a 100 mesh sieve (passed through 150 micron). The permeation rate (%) was calculated as 38% by repeating 4 times as follows:

Percentage Percentage = After (After) Weight / Before (Before Passing) Weight x 100

From the values of the permeability, it can be seen that the composition according to the present invention is not completely decomposed into water at once, but gradually decomposes to exhibit a slow-releasing effect of sterilization / siphoning.

Experimental Example 2: Test for controlling powdery mildew of cucumber

Using the composition of the present invention prepared in Preparation Example 2, a pharmaceutical effect test for cucumber powdery mildew ( Sphaerotheca fusca ) was commissioned by the University of Industrial Science, Kongju National University and the greenhouse cultivation area of Cucumber (Han River) (Fig. 3a, Fig. 3b (test section) and Fig. 3c (untreated section)), and the test results are shown in Table 5.

<Processing content>

Test agent Drug efficacy test usage When and how to process The composition of Production Example 2 6kg / 10a Formal mixing of soil 1 week ago No treatment - -

<Overview of Seedlings>

How to grow Installation facility Full day
(Month / day) Rangan
(cm) Vegetarian density
(cm) Facility cultivation
(Vinyl exposure) Mulching in the facility 8/2 120 40 x 40

<Arrangement and Area of Test Sphere: Arbitrary Arrangement Method>

division Treated water Number of repeats Muzzle count Area per unit Required area Control efficacy 2 3 6 10㎡ 60㎡

<Survey method>

division Survey item Number of investigations Date of investigation Investigation method Drug efficacy test Outbreak 1 time 9/2 The lesion area ratio for 100 leaves per 10 weeks was investigated and converted to the onset pathway

<Test result: Pharmaceutical effect on cucumber powdery mildew>

Test agent Outbreak rate (%) Control (%) Ⅰ repeat Ⅱ repeat Ⅲ repeat Average The composition of Production Example 2 9.8 9.8 9.7 9.8 70.6 No treatment 32.6 36.3 30.9 33.3 -

From the above Table 5, the composition of the present invention showed a control effect of 70.6% compared to the untreated control, showed a disease incidence of 33.3% in the untreated incidence rate, and showed a minimum incidence of 20% It can be confirmed that it has excellent control effect against cucumber powdery mildew since there is no abnormality in evaluating the drug effect. Therefore, it can be seen that the composition of the present invention can be used as an eco-friendly material for disinfecting plants.

Experimental Example  3: Weakness test on crops

The fungicidal test of the composition of the present invention prepared in Production Example 2 for five target crops was commissioned by the Environmentally Friendly Agricultural Research Center of Kangwon National University from September to October 2013 as follows. Respectively.

< Test Method>

end. Location: Kangwon National University Eco-friendly Agricultural Research Center Greenhouse (Facility Cultivation)

I. Test crops: Chinese cabbage, lettuce, cucumber, red pepper, radish,

All. Test period: September 10 ~ 2013. 10. 10

la. Processing contents

Treatment NPK dosage
(kg / 10a) Plant material usage (kg / 10a) cabbage Lettuce  cucumber pepper radish No treatment - - - - - - Standard amount - 6 6 6 6 6 Volume - 12 12 12 12 12

hemp. Test Area Arrangement and Area: Fully Arrangement Method, 3 Repetitions

bar. Test Methods

Chinese cabbage (August 8, 2013 planting, self-seeding), lettuce (August 8, 2013 planting, self-seedling planting), cucumber planting ), Seedless seedlings (September 10, 2013, seedlings of seedlings) are used, and in accordance with the usage amount per 10a on Sep. 10, 2013 in the environment friendly green research center greenhouse, After soil blending, seedlings of each crop were formulated for one week per Wagner pot (1/5000 a).

Cultivation management uses greenhouse with automatic opening and closing type shading film and cold confinement device, and it controls crops by checking temperature and humidity for 3 times a day, and watering treatment is done by using fractional hose from once to three times a day depending on temperature and humidity. Watering.

The phytotoxicity of the plants was investigated in terms of appearance and appearance of the plants during 10, 20 and 30 days after the application (FIGS. 5A to 5C), and the results are shown in Table 7. The survey criteria (when comparing untreated area with reference volume and volume) are 0: no visual weakness was observed; 1: very light weakness, slight weakness is recognized; 2: weakness is recognized in a part of treated leaves; 3: Approximately 50% of the treated leaves were vulnerable; 4: I am suffering considerable damage, but I still have a good part; 5: Severely damaged and classified as dead.

Crop name Treatment Weak (0-5) Weak Symptoms 10 days 20 days 30 days
cabbage No treatment - - - - Standard amount 0 0 0 none Volume 0 0 0 none
Lettuce No treatment - - - - Standard amount 0 0 0 none Volume 0 0 0 none
pepper No treatment - - - - Standard amount 0 0 0 none Volume 0 0 0 none
cucumber No treatment - - - - Standard amount 0 0 0 none Volume 0 0 0 none
radish No treatment - - - - Standard amount 0 0 0 none Volume 0 0 0 none

From Table 7, no damage to the crops was observed upon fertilization of the composition of the present invention during the period of the potency test, and no unusual symptom was found in the treatment plot . Therefore, the composition of the present invention is suitable for organic agricultural material disclosure and quality certification standards since no symptoms are exhibited on crops when fertilized.

Claims (9)

A composition for controlling plant pests and diseases, wherein 1 to 5 wt% of nematic oil is coated on granules composed of 80 to 95 wt% of sulfur and 4 to 15 wt% of bentonite.
[Claim 2] The composition according to claim 1, wherein the granules have a diameter of 2.5 to 5 mm and a height of 1.2 to 1.8 mm.
The composition according to claim 1, wherein the granules are in the form of a split pea.
The method according to claim 1, wherein the plant insect pests are selected from the group consisting of powdery mildew diseases, Chinese cabbage rootstock disease, potato scab disease, onion black decay sclerotinia, cilobia, spider mite, slugs, high digits, aphids, cabbage worms, Wherein the composition is any one selected from the group consisting of beetle, moth, moth, intertwine, thrips and powder.
A method for producing a composition for controlling plant pests and diseases,
I) mixing 4 to 15% by weight of bentonite powder with 80 to 95% by weight of liquid sulfur;
Ii) granulating the sulfur-bentonite mixture;
Iii) coating the sulfur-bentonite granules with 1 to 5 weight percent nematic oil.
6. The process according to claim 5, further comprising filtering the liquid sulfur to 5 to 20 mesh before mixing in step i).
6. The method according to claim 5, wherein the granulation is performed to form granules having a diameter of 2.5 to 5 mm and a height of 1.2 to 1.8 mm.
6. The method of claim 5, wherein the coating is accomplished by spraying with a spreader.
9. A plant pesticide-preventing composition prepared by the production method according to any one of claims 5 to 8.

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