KR101658613B1 - Eco-friendly sulfur water-dispersed composition for controlling plant disease and insects and preparation method thereof - Google Patents

Abstract

In the present invention, the powder of natural sulfur and bentonite, which is not separately required for the legalization of sulfur, is controlled in the elution of sulfur, has a stable effect and is excellent in sterilization / insecticidal effect against plant insect pests, And a method for producing the sulfur hydrate composition.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a sulfur-containing water-

The present invention relates to a sulfur-hydrated composition for the control of environment-friendly plant diseases and pests and diseases, and more particularly, The present invention relates to a sulfur hydrating composition for controlling plant pests and diseases, which is obtained by dispersing powder of natural sulfur and bentonite, which is excellent in sterilization / insecticidal effect against plant insect pests, in water and a method for producing the same.

Various kinds of pests caused by plants such as trees and crops should be prevented beforehand, so that the damage of pests and diseases can be minimized and effective control can be made, the plants can be smoothly grown, and the production amount of crops can be increased.

Recently, the use of sulfur has been proposed as an alternative to the prevention and control of pests and diseases for environmentally friendly organic farming of cultivated crops for food such as fruit juice, 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).

One of the uses of sulfur as a natural pesticide is powder-processed sulfur. When sulfur powder is dispersed in the air, it rubs against vinyl house and iron, causing corrosion of expensive vinyl and iron, It gathered in one place and was severely vulnerable to plants, and was severely damaged by wind and water (Korean Patent Laid-Open No. 1997-064372).

Another use form of sulfur as a natural pesticide is a liquefied sulfur preparation, which is easy to use because of its application, but liquefaction of powder sulfur is difficult due to the tendency of sulfur not to be dissolved in water and conventional liquefied sulfur is also vulnerable to crops There is a problem that it is severe.

Accordingly, it has been desired to develop a method for maximizing the sterilization / insecticidal effect of sulfur by eliminating the problems of sulfur powder or liquefied sulfur formulation, which is a conventional sulfur pesticide, while preventing the plants from being weak.

The present inventors have found that a sulfur hydrated composition prepared by dispersing sulfur-bentonite powder prepared by adding a certain amount of bentonite to molten sulfur in water is useful for the treatment of plants It has been confirmed that the sulfur can be used as a sulfur liquid preparation for environmentally friendly plant insect pest control, which gradually dissolves and prevents plants from being harmful but also has high sterilization / insecticidal effect.

Accordingly, an object of the present invention is to provide a sulfur hydration composition for controlling environment-friendly plant and pest insects, which is composed of sulfur-bentonite powder dispersed in water and gradually dissolves sulfur to prevent phytotoxicity of plants and has excellent sterilizing / insecticidal effect.

It is still another object of the present invention to provide a method for producing an environmentally-friendly plant-based insect-resistant sulfur hydrating composition comprising the steps of forming a sulfur-bentonite powder and dispersing sulfur-bentonite powder in water.

In order to achieve the object of the present invention,

The present invention provides a sulfur hydrating composition for controlling plant pests and diseases, which comprises 30 to 60% sulfur-bentonite powder, 3 to 10% by weight of a dispersant, 0.01 to 1% by weight of a thickener and balance water.

Sulfur-bentonite powder

In the present invention, the sulfur-bentonite powder can be prepared by mixing bentonite powder with molten sulfur, cooling the mixture, and then pulverizing the mixture into 200 to 400 mesh.

Sulfur used in the production of sulfur-bentonite powder is preferably molten sulfur which is not formulated. Molten sulfur (boiling point 118 ° C) is produced by desulfurizing 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.

The weight ratio of sulfur to bentonite in the sulfur-bentonite powder of the present invention is preferably 19 to 17: 1 to 3 (9.5 to 8.5: 0.5 to 1.5). If the weight ratio of sulfur is less than the above range, the sulfur content is insufficient, and when the weight ratio of bentonite is in the above range, sulfur-bentonite powder becomes stiff and thick like porridge when dispersed in water, so that mixing and mixing are difficult.

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, and the layers are formed of these plates. Among them, Al in the Ai intermediate layer is substituted by Mg in which 2+ is Al, Charge is generated, which is bound to Na or Ca.

In the sulfur-bentonite powders of the present invention, the bentonite enhances the dissolution of the sulfur and diffusive action (the action of decomposing sulfur in the bentonite-binding structure and spreading the decomposed sulfur uniformly). When molten sulfur and bentonite are mixed at high temperature, some of Na or Ca of bentonite is replaced with S, and sulfur enters the bentonite structure. Therefore, after the composition of the present invention is treated on the crop, the bentonite controls the dissolution of the sulfur so that the sulfur slowly dissolves. 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. 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 bentonite powder is preferably 200 mesh or more, but is not limited thereto.

In the sulfur hydrated composition of the present invention, the sulfur-bentonite powder may be prepared by adding bentonite powder to molten sulfur and mixing and then pulverizing the mixture with a commonly used pulverizer. The particle size of the powder is not limited, but is preferably 200 to 400 mesh.

In the sulfur hydrated composition of the present invention, the sulfur-bentonite powder is preferably contained in an amount of 30 to 60 wt%. When the sulfur-bentonite powder is contained in an amount of more than 60 wt%, it is difficult to disperse in water, It is difficult to mix and mix). When the content is less than 30% by weight, the content of sulfur is decreased and the sterilization / insecticidal effect becomes weak.

Dispersant

The dispersant in the composition of the present invention allows the non-polar sulfur-bentonite powder to be stably suspended in water.

As the dispersing agent that can be used in the present invention, a surfactant may be used, and preferably an anionic surfactant, a cation surfactant, an amphoteric surfactant, a nonionic surfactant, surfactant) can be used, but it is not limited thereto unless it is harmful to plants and animals.

In the composition of the present invention, the dispersant may be contained in an amount of 3 to 10% by weight, and if it is less than 3% by weight, the dispersion of sulfur-bentonite powder in water may not be well dispersed. .

Thickener

The thickener in the composition of the present invention serves to stabilize the composition by increasing the viscosity and to prevent settling of the sulfur material.

As the thickening agent in the present invention, any one or more of xanthan gum, guar gum, gum arabic, roguarth gum gum, alginate gum, agar or carrageenan may be used, but it is not limited thereto unless it is harmful to plants or animals.

In the composition of the present invention, the thickener may be contained in an amount of 0.01 to 1% by weight, and if it is less than 0.01% by weight, the sulfur particles can not be uniformly stabilized in the product.

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; Aphid, pulp, and the like.

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, and tomato, Chinese cabbage wilt / rootstock disease, potato scab disease, onion black rot mycosis, aphid, and powdery mildew. It is not.

The method of using the composition for controlling plant insects and diseases according to the present invention can be applied by diluting 500 times / 10a with water in a growing period of crops and then treating them as a soil cultivator or the like, and the foliage and crops such as pumpkin, cucumber, It may be diluted, but is not limited to.

For another object of the present invention,

I) preparing a sulfur-bentonite powder;

Ii) adding water and a dispersant to a mixer and adding and mixing sulfur-bentonite powder while stirring;

Iii) stirring the mixed solution for 60 to 120 minutes to disperse the sulfur-bentonite powder; And

Iv) Step of injecting thickener

The present invention also provides a method for producing a sulfur hydrating composition for controlling plant insect pests.

Step i): Preparation of sulfur-bentonite powder

Sulfur-bentonite powder is prepared by mixing bentonite powder with molten sulfur and cooling to 200 ~ 400 mesh.

The weight ratio of molten sulfur and bentonite to sulfur: bentonite is the same as described above.

Since the melting point of the molten sulfur is 118 ° C, the temperature control during the supply is continued so as 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.

The mixed sulfur-bentonite mixture is pulverized using a conventional pulverizer to produce a sulfur-bentonite powder. The particle size of the powder is preferably 200 to 400 mesh, but is not limited thereto.

Step ii): Mixing

Water and a dispersant are put into a mixer and mixed with sulfur-bentonite powder while stirring.

The dispersing agent is as described above.

34 to 66.99% by weight of water, 3 to 10% by weight of dispersant and 30 to 60% by weight of sulfur-bentonite powder are added.

The mixer can be used without limitation as long as it is a mixer equipped with a stirrer.

It is preferable to gradually add the sulfur-bentonite powder while stirring the mixture of water and the dispersant. The stirring speed for mixing is preferably from 50 to 100 rpm, and the stirring time for mixing is preferably from 1 to 10 minutes, but is not limited thereto.

Step iii) dispersion

The mixed solution from step ii) is stirred for 60 to 120 minutes to disperse the sulfur-bentonite powder to form a composition in which the sulfur-bentonite powder is hydrated.

The stirring speed for dispersion is preferably from 50 to 100 rpm, but is not limited thereto.

Step iv): Thickening

A thickener is added to the solution from step iii) to control the viscosity to complete the sulfur hydrating composition.

The thickening agent is as described above.

The thickener is preferably added in an amount of 0.01 to 1% by weight.

The thickener may also be diluted with a liquid dispersant.

The viscosity of the composition of the present invention is preferably, but not limited to, such that the viscosity of the composition of the present invention is not too sticky and can easily come out from the product bottle.

In a further aspect of the present invention, the present invention provides a process for the preparation of a composition comprising 30 to 60% by weight of sulfur-bentonite powder, 3 to 10% by weight of a dispersant, 0.01 to 1% by weight of a thickener, A sulfur hydrating composition for plant insect pest control is provided.

The sulfuric hydrate composition for controlling plant diseases and diseases according to the present invention is excellent in sterilization / insecticidal effect, is stable and hardly harmful to plants, and inhibits the growth of harmful bacteria and pests, thereby alleviating damage to crops and maintaining healthy crops , Suitable for the prevention and management of soil disease and soil damage, and can be used as an environmentally friendly organic material suitable for pest and disease management safe for man-made ships.

In particular, the sulfur hydration composition for controlling plant diseases and diseases of the present invention has a structure in which sulfur is substituted for Na and Ca in the structure of bentonite, so that after application to crops, sulfur slowly melts and prevents phytotoxicity against plants, Exhibit a sterilization / insecticidal effect for a sufficient period of time.

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.

1 is a manufacturing process diagram of an example of the manufacturing method according to the present invention.
FIGS. 2A and 2B are photographs of the sulfur hydration composition for controlling plant insect pests produced in Production Example 1. FIG.
FIGS. 3A, 3B and 3C are photographs showing the control effect of the composition for controlling plant diseases and insects prepared in Production Example 1. FIG.
FIG. 4 is a photograph showing the procedure of treating the reference amount and the amount of the sulfur hydrating composition for controlling plant insect pests according to the present invention, with respect to the soil, respectively.
FIGS. 5A, 5B and 5C are photographs showing the appearance of weakness of the target plants over 3, 7 and 14 days after the crossing treatment of the composition for controlling plant diseases and diseases according to the present invention, respectively.

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

(S-Oil) was filtered with 10 mesh to remove impurities. Then, 40 kg of the mixture was placed in a mixer (Inline mixer, manufacturer IKA), and 200 weight parts of bentonite powder (ASHAPURA INTERNATIONAL LTD. 5 kg were added and mixed, and the mixture was pulverized to an average of about 325 mesh in a pulverizer (bundle rope) to prepare a sulfur-bentonite powder.

46.97 Kg of water and 7.2 Kg of surfactant (NK-SC240; Co-Seal Co., Ltd.) were added to the mixer (SeKwang Chemical Plus) and 45 Kg of sulfur-bentonite powder was stirred for 10 minutes while stirring at 50 rpm And mixed. The mixed solution was stirred at a stirring speed of 50 rpm for 60 minutes so that the sulfur-bentonite powder was completely dispersed in water. To the resultant solution was added 0.03 Kg of a thickener (Zanthan Gum; Jupiter International) diluted with 0.8 Kg of a surfactant (NK-SC240; supplied by Koh Corporation), and the viscosity was adjusted to adjust the viscosity of the sulfur hydrate The composition was completed, and the photograph is shown in Figs. 2A and 2B.

Production Example 2

(S-Oil) was filtered with 10 mesh to remove impurities. 44 kg of the mixture was placed in a mixer (Inline mixer, manufacturer IKA), and 200-mesh sized bentonite powder (ASHAPURA INTERNATIONAL LTD.) Was added thereto. 5 kg were added and mixed, and the mixture was pulverized to an average of about 325 mesh in a pulverizer (bundle rope) to prepare a sulfur-bentonite powder.

43.99 kg of water and 6.6 Kg of a surfactant (NK-SC240; Co-seal) were added to a mixer (manufactured by Shinseong Engineering), and 49 Kg of sulfur-bentonite powder was added over 5 minutes while stirring at a speed of 100 rpm And mixed. The mixed solution was stirred at a stirring speed of 100 rpm for 120 minutes so that the sulfur-bentonite powder was completely dispersed in water. To the resultant solution was added 0.01 Kg of a thickener (Zanthan Gum; Jupiter International) diluted with 0.4 Kg of a surfactant (NK-SC240; Co-seal Co., Ltd.) and then gradually adjusted to adjust the viscosity of the sulfur hydrate The composition was completed, and the sulfur hydrate composition for controlling plant pests and diseases was prepared as shown in Fig.

Experimental Example  One: Cucumber powdery mildew  Control effect test

Using the sulfur hydration composition of the present invention prepared in Preparation Example 1, a pharmaceutical efficacy test against cucumber powdery mildew (Sphaerotheca fusca) was commissioned by Kongju National University, Institute of Industrial Science and Technology, and from August to September 2013, The results of the test were shown in Table 5 in the cultivation area (Chungnam Budget, sandy soil) as shown in the following Tables 1 to 4 (Fig. 3a, Fig. 3b (Test plot) and Fig. 3c (Control plot)).

Test agent Drug efficacy test Usage (dilution factor) When and how to process
The composition of Preparation Example 1 4L / 10a
(500-fold dilution) Every 7 days
2 times soils
(9/1, 9/8) No treatment - -

<Processing content>

How to grow Installation facility Full day (month / day) Width (cm) Planting density (cm) Facility cultivation
(Vinyl-coated) Mulching in the facility 8/2 120 40 x 40

<Overview of Seedlings>

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

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

division Survey surrender Number of investigations Date of investigation Investigation method Drug efficacy test Outbreak 1 time 9/16 After 7 days of the final drug treatment, the lesion area ratio for 100 leaves per 10 weeks was examined,

<Survey method>

Test agent Outbreak rate (%) Control (%)
Ⅰ repeat Ⅱ repeat Ⅲ repeat Average The composition of Preparation Example 1 7.6 9.8 8.7 8.7 77.6 No treatment 35.6 42.3 38.9 38.9 -

<Test result: Pharmaceutical effect on cucumber powdery mildew>

From the above Table 5 and FIGS. 3b and 3c, the sulfur hydration composition of the present invention showed a control effect of 77.6% compared to the untreated control and showed a disease incidence of 38.9% in the untreated onset rate, And the incidence of disease was more than 20%). Therefore, it can be confirmed that the control effect against cucumber powdery mildew was excellent. Accordingly, it can be seen that the sulfur hydrated composition of the present invention can be used as an environmentally friendly material for disinfection of plants.

Experimental Example 2: Fracture test on crops

The fungicidal test of the composition of the present invention prepared in Preparation Example 2 for five target crops was commissioned by the Environmentally Friendly Agricultural Products Safety 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: 2013. 9. 27 ~ 2013. 10. 11

la. Processing contents

Treatment NPK dosage
(kg / 10a) Plant material usage (ml / 20L) cabbage Lettuce cucumber pepper radish No treatment - - - - - - Standard amount - 40 40 40 40 40 Volume - 80 80 80 80 80

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

bar. Test Methods

Chinese cabbage (September 23, 2013), lettuce (August 23, 2013), cucumber (October 18, 2013, self-seeding), pepper ), Non-seeded (Aug. 20, 2013, seedlings) seedlings were planted in a greenhouse for green agriculture research center in Warmer Port (1/5000 a) on September 27, 2013, The soil was treated with the amount of the composition used per 20 L (standard amount: 500-fold dilution, multiplication: 250-fold dilution).

In the greenhouse, the greenhouse is controlled by checking the temperature and humidity for 3 times a day, using a greenhouse equipped with an automatic opening and closing shading film and a cold confinement device. The watering treatment is conducted once a day to three times a day, depending on the temperature and humidity, Respectively.

The results of the phytotoxicity tests were shown in Figs. 5A to 5C. 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 the cow parts of treated leaves; 3: Fifty percent 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 3 days 7 days 14 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

It can be seen from Table 7 that during the period of the weakness test no damage to the target crop was observed due to fertilization of the sulfur hydrated composition of the present invention and no unusual symptoms were found in the treated area . Therefore, the composition of the present invention was judged to be suitable for organic agricultural material disclosure and quality certification standards because no symptoms were exhibited on crops when fertilized.

Claims (10)

30 to 60% by weight sulfur-bentonite powder, 3 to 10% by weight of a dispersant, 0.01 to 1% by weight of a thickener and balance water,
The sulfur-bentonite powder is prepared by mixing bentonite powder with molten sulfur and then pulverizing, and has a particle size of 200 to 400 mesh,
The weight ratio of the molten sulfur: bentonite is 19 to 17: 1 to 3,
Wherein the thickening agent is any one selected from the group consisting of xanthan gum, guar gum, gum arabic, rogastin gum, alginate gum, agar and carrageenan.
delete delete delete The plant pest solution according to claim 1, wherein the plant insect pest is any one selected from the group consisting of powdery mildew of cucumber, strawberry and tomato, Chinese cabbage / rootstock disease, potato scab disease, onion black rot mycosis, aphid and powder Sulfur hydration composition for controlling.
A method for producing a sulfur hydrating composition for plant insect pest control according to claim 1,
I) Mixing bentonite powder with molten sulfur and pulverizing to produce a sulfur-bentonite powder having a particle size of 200 to 400 mesh;
Ii) adding water and a dispersant to a mixer and adding and mixing sulfur-bentonite powder while stirring;
Iii) stirring the mixed solution for 60 to 120 minutes to disperse the sulfur-bentonite powder; And
Iv) adding a thickening agent,
The weight ratio of the molten sulfur: bentonite is 19 to 17: 1 to 3,
Wherein the thickening agent is any one selected from the group consisting of xanthan gum, guar gum, gum arabic, rogaster gum gum, alginate gum, agar and carrageenan.
delete The method according to claim 6, wherein 30 to 60 wt% of sulfur-bentonite powder, 3 to 10 wt% of dispersant, 0.01 to 1 wt% of thickener, and 30 to 66.99 wt% of water are charged.
7. The process according to claim 6, wherein the stirring speed in step iii) is 50 to 100 rpm.
delete

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