KR100660387B1 - Nematicidal and Herbicidal Composition Comprising Methyl Isothiocyanate and Menufaction Method thereof, and Eliminating Method Using The Composition - Google Patents

Abstract

The present invention provides a nematode and weed control agent for soil treatment containing ocher balls or vermiculite containing methyl isothiocyanate as an active ingredient. The present invention also provides a method for producing a nematode and weed control agent for soil treatment, which is prepared by absorbing a methyl isothiocyanate solution into an ocher ball or vermiculite as an absorbent. In addition, the present invention is to treat the nematicide at 50-500cc per m 2 based on the nematicide for soil treatment obtained by saturating 100% saturation in ocher ball or vermiculite as a methyl isothiocyanate solution as an absorbent Provides a method for controlling soil nematodes or weeds.

Methyl Isothiocyanate, Ocher Ball, Vermiculite

Description

Nematicidal and Herbicidal Composition Comprising Methyl Isothiocyanate and Menufaction Method Skill, and Eliminating Method Using The Composition}             

1 is a photograph of ocher balls (A) and vermiculite (B) containing methyl isothiocyanate according to the present invention.

Figure 2 is a photograph comparing the cucumber (A) and cultivated cucumber (B) treated by processing the granular agent containing methyl isothiocyanate according to the present invention in the soil.

3 is a photograph (A) and a photograph (B) of an untreated section observing the effect of weed generation after treating the granular agent containing methyl isothiocyanate according to the present invention to the soil.

4 is a basic treatment (A), culture treatment (B) and no treatment (investigation of the presence or absence of weakening the tomato after treating the granular agent containing methyl isothiocyanate according to the present invention in the soil after vinyl coating treatment) C) is a picture.

The present invention relates to a nematode and weed control agent for soil treatment, and a method for manufacturing the same, and a method for treating the soil using the same, and more specifically, to formulate a methyl isothiocyanate granular formulation to simplify pharmaceutical treatment, There is no concern, and the present invention relates to a nematode and weed control agent for soil treatment, which is excellent in the control of soil nematodes, and an effect of inhibiting weed generation, and a method of manufacturing the same.

Root-knot nematodes are plant parasitic nematodes, which invade the roots of plants to absorb nutrients and promote infection of pathogenic microorganisms. Due to recent plant cultivation, damage to nematodes is increasing due to year-round cultivation of the same crops. Root-knot nematodes have more than 700 species of host plants, which are rare in resistant varieties and are difficult to control due to the resistance of chemical insecticides. Biological control methods of plant parasitic nematodes include methods using predatory nematodes, predatory insects, mites, bacteria, filamentous fungi, etc. Among them, the most effective method is by predatory or parasitic fungi. This control method has the advantage that there is no problem of pesticides, soil pollution and pesticide residues caused by spraying pesticides. However, these biocontrol agents have a very low control effect compared to chemical preparations, so crop cultivators tend to coral chemical pesticides.

Methylisothiocyanates have many major features in pest control. First, methylisothiocyanate itself can solve various problems. It can control a wide range of pathogens, nematodes, pests, weeds and weed seeds. However, in spite of such an excellent effect, it is difficult to treat the drug and there is a fear of weakening after treatment, so it takes a month or more to remove the gas, so it tends to avoid use.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the problems of the prior art, and a first object is to provide a nematode and weed control agent for soil treatment that is easy to treat and does not cause weakening.

A second object of the present invention is to provide a method for producing the nematode and weed control agent for soil treatment, which is achieved by the first object, which is easy to treat the medicine and does not cause the harmful effects.

A third object of the present invention is to provide a method for treating soil in nematodes and weed control agents for soil treatment, namely, an effective control method for nematodes and weeds.

In order to achieve the first object, the present invention provides a nematode and weed control agent for soil treatment containing ocher balls or vermiculite containing methylisothiocyanate as an active ingredient.

In addition, the present invention provides a method for producing a nematode and weed control agent for soil treatment prepared by absorbing a methyl isothiocyanate solution as an absorbent in ocher balls or vermiculite to achieve the second object.

The present invention preferably provides a method for producing a nematode weed control agent for soil treatment, characterized in that the ocher ball is baked at 600-1,100 ℃, more preferably 700-800 ℃.

In addition, the present invention is based on the nematic insecticide for soil treatment obtained by saturating 100% saturation in ocher ball or vermiculite as an absorbent to the methyl isothiocyanate solution to achieve the third object. It provides a method for controlling soil nematodes or weeds by treating at 50-500cc per 1㎡.

The present invention preferably provides a control method characterized in that the step of mulching the vinyl on the soil surface after the soil treatment of the nematode.

Hereinafter, the content of the present invention in more detail as follows.

The ocher ball and vermiculite usable in the present invention preferably have no or little inorganic or soil moisture in consideration of the mechanism of drug expression of methylisothiocyanate solution. In particular, ocher balls are very suitable for granulating methylisothiocyanate solution, and preferably baked under conditions (temperature, etc.) that can be soiled in a short period of time after the soil treatment. According to the present invention, the absorption rate of methylisothiocyanate of ocher balls having a density of 103 g / 100 cc of 4.2 mm size baked at 700 ° C. was 18.5%, and when they were treated in soil, excellent nematicidal effect and weed control effect were confirmed. In the case of vermiculite, 14.8 and 17.6g / 100cc of horticulture No. 1 and horticulture No. 2 experiment showed that the water absorption was 1,000% by weight. Similarly, excellent nematicidal effect and weed control effect It was confirmed to have. Figure 1 shows a photograph of the ocher balls (A) and vermiculite (B) obtained by saturating the methyl isothiocyanate solution according to the present invention in the ocher balls and vermiculite as the absorbent, respectively.

The throughput of the granular agent in the soil is an amount that can be 50-500cc per m 2, more preferably 100-200cc, based on the formulation in which methylisothiocyanate is 100% saturated, The treatment period is not particularly limited and is 1-10 days, preferably 5-7 days.

As a result of observing the growth effect of cucumber, a representative crop of the soil treated through the above process, very good growth effect was observed as compared to the untreated group, and moreover, weeding was almost observed in the sphere treated with the granulation agent according to the present invention. On the contrary, the granular agent according to the present invention was found to have a very good weed control effect in view of the number of observations in the untreated group.

In addition, after the granulation agent according to the present invention was treated in the soil, vinyl was mulched, and after 6 days of punching, the tomato was planted, and no harmful effects occurred in the present results. The granular agent according to the present invention was confirmed that the nematicidal effect is excellent, but there is no fear of weakening. As described above, the preparation according to the present invention has a granular preparation, so that the treatment of the drug is easy and there is no fear of weakening, and it is possible to minimize the damage from nematodes and weeds due to the excellent effect of inhibiting the weeding together with the control of soil nematodes.

Hereinafter, the granular agent prepared by measuring the maximum saturation amount of methyl isothiocyanate per gram in ocher balls and horticultural vermiculite baked at a predetermined temperature in order to granulate the methyl isothiocyanate according to the present invention. The nematode control effect is determined indoors by throughput, and the granular preparation prepared by treatment is processed in detail to evaluate the effect of soil nematode inhibition, crop growth, and weed control effect. However, such specific embodiments are only presented to understand the contents of the present invention and the scope of the present invention should not be construed as being limited thereto.

Example 1 Selection of Optimal Clay Pellets as Methylisothiocyanate Treatment Agents

Ocher ball production temperature range of the plant pest and weed control composition is 600-1100 ℃ and the optimum temperature is 700 ℃.

Ocher ball composition

<Table 1> Comparison of Characteristics of Loess Ball According to Manufacturing Temperature

Manufacturing temperature (℃) Water absorption burglar Remarks 300 or less Prize about Circular preservation is impossible when absorbing composition 700-800 medium medium Circular preservation possible, weathering after treatment More than 900 Prize Prize Circular preservation possible, non weathering after treatment

Absorption Rate of Ocher Ball Composition

50 ml of absorbent was added to 100 ml of methyl isothiocyanate solution to make 100% saturation, and the remaining amount of the methyl isothiocyanate liquid was measured to determine the water absorption. As a result, the MI absorption rate of the clay ball 103g weight having a diameter of 4.2.mm was 18.5%, and the absorption rate of vermiculite was 1,000%.

TABLE 2 Methyl Isothiocyanate Absorption of Ocher Balls

Diameter (mm) Weight (g) / 100cc Manufacturing temperature (℃) Absorption rate (% by weight) 3.7 to 5.7 (4.2 average) 103 700 18.5

Example 2 Vermiculite Selection as Methyl Isothiocyanate Treatment Agent

Vermiculite Horticulture Nos. 1 and 2, which are used as horticultural materials for the preparation of granular preparations, were prepared. Table 3 shows the absorption rate of the methyl isothiocyanate solution using the prepared vermiculite.

<Table 3> Absorption amount by type of vermiculite

Kinds Weight (g) / 100cc Absorption rate (% by weight) Horticulture # 1 14.8 1,000 Gardening No. 2 17.6 1,000

<Example 3> Treatment effect of the granular agent prepared in Examples 1 and 2

Nematode Control Effects of New Compositions

The results of examining the control effect of nematodes by soil treatment of the novel granular preparations of Examples 1 and 2 are shown in Table 4. The ocher ball solid composition absorbed with methyl isothiocyanate (MI) solution was treated with 200 ml (MI40 ml) and 100 ml (MI20 ml), and 200 ml (MI40, MI20) for the vermiculite composition. Treatment of the ocher ball composition was treated by soil surface treatment and soil mixing after the surface treatment to mulch the thickness of 0.01 mm black vinyl. The nematode density of each test group was examined before drug treatment, and the nematode density after the treatment was investigated by funneling 7 days after the treatment. As a result, the nematode control effect was 100% when the ocher ball composition was treated, and the nematode density reduction effect was very high even when the vermiculite composition was treated.

Table 4 Nematic Insect Effects of Granular Agents Containing Methyl Isothiocyanate

1st brother Throughput (ml / ㎡) Treatment method Density before treatment (mari / soil 100cc) Density after treatment (100 cc / horse) Reduction rate (%) Liquid 20 Soil mixing 361 4 98.9 Surface treatment 157 2 98.7 40 Soil mixing 407 0 100 Surface treatment 343 0 100 Ocher ball composition 20 Soil mixing 270 0 100 Surface treatment 350 0 100 40 Soil mixing 308 0 100 Surface treatment 278 0 100 Vermiculite composition 20 Soil mixing 24 One 95.8 Surface treatment 322 21 93.5 40 Soil mixing 27 2 92.6 Surface treatment 87 3 96.6

Investigation of Crop Growth Effect by Granular Agent Treatment

200 ml (MI40 ml) and 100 ml (MI20 ml) per 100 m 2 of the ocher ball composition absorbed with methyl isothiocyanate, 100 ml (MI20) and 200 ml (MI40) were treated to the soil, respectively. It was. The composition was treated with soil surface treatment, soil treatment after surface treatment, and mulching 0.01 mm thick black vinyl. After 21 days of treatment, ground length, biomass and root dry weight were examined. As a result, when the loess ball composition and the vermiculite composition which absorbed methyl isothiocyanate were treated, the growth effect of cucumber was very good compared with the no treatment. That is, the cucumber length of the ocher ball composition 100cc treatment was 83mm, the bio weight was 4.06g, but in the case of no treatment, the ultra-thickness was 47.6mm and the biomass weight was 1.95g. Turned out to be very good.

TABLE 4 Cucumber Growth Effects of Granular Agents Containing Methyl Isothiocyanate

process Extra long (mm) Biometric weight (g) Topsoil Treatment of Ocher Ball Composition 20ml 83.0 4.059 Ocher ball composition 40 ml topsoil treatment 83.3 4.345 Ocher ball composition 20 ml soil mixture 84.8 3.972 Ocher ball composition 40 ml soil mixture 82.9 4.985 Topical treatment of vermiculite composition 20 ml 72.7 3.995 Vermiculite 40ml Topsoil Treatment 75.8 3.937 Vermiculite Composition 20ml Soil Mixing 72.9 4.741 Vermiculite Composition 40ml Soil Mixing 69.1 3.932 No treatment 47.6 1.954

Investigation of weed control effect by granular treatment

As a result of treating the granules with soil for each treatment amount, weed suppression effect was almost no weed occurrence in the new composition treated group as shown in Table 5. In the untreated group, 42 species / 20cm × 20cm occurred in 11 species. High. (See Figure 3)

Table 5 Inhibition of weed generation by treatment of granular agents containing methylisothiocyanate

process Species (species) / 20 cm x 20 cm Number of individuals (individual) / 20 cm x 20 cm Ocher ball composition 100 ml topsoil treatment 0 0 Ocher ball composition 200 ml topsoil treatment 0 0 Ocher ball composition 100 ml soil mixture 0 0 Ocher ball composition 200ml soil mixture 0 0 Topical treatment of vermiculite composition 20 ml 0 0 Vermiculite 40ml Topsoil Treatment 0 0 Vermiculite Composition 20ml Soil Mixing One 2 Vermiculite Composition 40ml Soil Mixing 0 0 No treatment 11 42

<Example 4> Investigation of the crop season according to vinyl coating after treatment of granular agent

Investigation of the Weakness of Crop Planting by Vinyl Coating after Granular Treatment

Methyl isothiocyanate as an active ingredient of granules was treated with 20ml / 40ml per 1㎡, and after 1 week, mulching vinyl was penetrated into 10cm diameter and nematode density was examined. Then, after the day of plastic punching and after 6 days, 30 days old tomato was planted and checked for damage. As a result, the nematode density before soil sterilization was 270 per 100 g of soil. However, after 7 days of treatment, the nematode water was not detected at all in the 20 ml treatment and in the 40 ml treatment. Also, when tomato seedlings were planted on the day of punching, methylisothiocyanate was not weakened in 20 ml treatment per 1 ㎡, but one individual withered in 40 ml treatment. And after six days of punching, no harm occurred. (See Fig. 4)

<Table 6> Crop Damage by Gas Removal Times after Vinyl Coating of Methyl Isothiocyanate

process Throughput (ml / ㎡) Weakness rate (%) Nematode Density (Sea / 100g) day 6 days Methyl Isothiocyanate 20 0 0 One 40 10 0 0 No treatment 0 0 0 87

According to the present invention, it is easy to treat the drug by forming granules, and there is no fear of weakening, and it is possible to increase the yield of crops by minimizing damage from nematodes and weeds with excellent control effect of soil nematodes and weed generation suppression effect. Can be.

Claims (5)

Nematode and weed control agent for soil treatment containing ocher balls containing methyl isothiocyanate as an active ingredient. A process for producing a nematode and weed control agent for soil treatment prepared by absorbing a methyl isothiocyanate solution into an ocher ball baked at 600 to 1,100 ° C. as an absorbent. delete delete delete

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