KR102331449B1 - Manufacturing method of slow-release biocidal material that does not contain pesticides - Google Patents

Abstract

The present invention relates to a sustained-release soil biocide that does not contain highly toxic pesticides and can slowly release an active ingredient of a biocidal material to control pests and harmful bacteria present in the soil for a long period of time, and a manufacturing method thereof. The present application, as a means for controlling disease and pests generated in the soil, came to the research with the recognition of a task to find the possibility to reduce the damage of crops from disease and pests while protecting the soil and water environment by allowing an environmentally friendly biocidal material to be slowly released from the soil by an encapsulation method for a pesticide-free biocidal material and to sufficiently solve the problem that highly toxic pesticides must be used to control disease and pests that have occurred in the soil so far when providing a function for long-term disease and pest control with minimal manpower as well as protection of the soil and water environment. The present inventor makes a soil biocide (mixture) containing 1.5 to 25 parts by weight of a biocide without pesticides and 3.5 to 55 parts by weight of a coating material based on 100 parts by weight of diluent filler and encapsulates the mixture to provide a sustained-release soil biocide.

Description

Pesticide-free sustained-release soil biocide and manufacturing method thereof

The present invention relates to a sustained-release soil biocide that does not contain a pesticide and a related technology for a method for manufacturing the same, provided that it does not contain a highly toxic pesticide, and provides long-term control of pests and harmful bacteria present in the soil It is a technology related to a sustained-release soil biocide and a manufacturing method that can release the active ingredient slowly.

So far, tens of thousands of soil pests have been reported worldwide, and according to data from the Rural Development Administration in Korea, the soil is rich in food conditions and can be a hiding place to protect the body from external enemies. Because it is suitable as a habitat.

Moreover, in recent years, along with the improvement of the national diet, the cultivation area of fresh vegetables has been expanded, and many kinds of vegetables are continuously grown/supplied throughout the year due to the development of new cropping technology and improvement of cultivation technology. It is a gradually increasing trend.

Due to these factors, the amount of occurrence and damage of soil pests continues to spread, and soil pests spend most of their growing season in the soil, so they are difficult to control compared to other pests. Pests mainly occur in areas with low temperatures, and 15-22 ℃ is the optimal temperature for life. The peak period for the development of adults is from mid-April to early June, from late September to early October. Adults are attracted to the field near the barn where there is a lot of livestock secretions and are attracted to the smell, and adults gather and lay eggs. Usually, one egg lays about 50 to 70 eggs. Severe damage to chives and damage to onion bed or garlic.

The larvae awakened from the eggs move towards the ground, which is the root part, causing damage to the roots, leaf sheath base, and rhizome.

In Korea, eggs, caterpillars, pupae, and adult insects are all known to be able to overwinter, but the larvae that cause damage continuously occur in the field from the beginning of October when garlic is sown to the harvest of the following year, especially around the beginning and middle of March. In the case of chemical control, the most important thing is to spray the chemical at the right time, and the larvae continue to damage the plant even after the garlic is sown and before winter. Control is essential, and after wintering, caterpillars are most produced in mid-March.

The larvae attack the roots on a sponge and cause the crops to wither and die. Damage occurs in tomatoes, gourd crops, eggplants, and carnations, especially in horticultural crops in facilities. is increasing

Adults in the greenhouse increase in mid-April, and occur most in late May. It decreases in summer and increases again in autumn, and occurs frequently in September and October. Control is carried out by mixing it with the plant, and if damage occurs during growth, irrigation treatment is used so that the soil near the root is sufficiently stirred with an insecticide effective for controlling flies.

Root mites mainly survive in the bast of the rhizome, the outer part of the rhizome, and between the rhizome and the root, but when environmental factors such as high temperature and humidity and suitable soil conditions are suitable, they multiply rapidly when combined with nematodes, fly larvae, and pathogens, causing severe damage. is known to give

Moths are known as heating insect pests that are difficult to control due to their strong resistance to crop protection agents. When young larvae, they are relatively well controlled. It is important to reduce the density of pests that are difficult to control due to the occurrence of senile worms and the increase in the number of generations, and it is essential to alternate spraying using different agents 2 to 3 times consecutively at intervals of one week at the beginning of occurrence. So it takes a lot of manpower.

As in this case, pests and diseases occur in the soil, causing damage to about 100 kinds of crops such as vegetables, flowers, and special crops. The economic value of agricultural products is determined by the freshness. Unlike processed foods, agricultural products are Because value is very important, one of the biggest problems in the cultivation of such agricultural products is how to solve the problems of deterioration of agricultural products quality and economic damage caused by microorganisms during distribution or storage after harvesting.

The causes of spoilage of agricultural products are from the soil causes of crop growing areas to the root zone of crops or the inflow of harmful microorganisms into the packaging and infecting them. It is statistically analyzed that it will cause a decrease in quantity and quality in the whole process, and damage up to 10 to 30% of the total agricultural products.

More recently, although pesticides are detected or putrefactive bacteria are found in supplied agri-food while promoting high-quality fresh agri-food using eco-friendly farming methods, complaints are constantly being reported in the media. In order to reduce or prevent damage from pests and diseases in the current crop cultivation process, even if the safety of The results of research to reduce damage from pests and pests that have occurred in the soil are as follows.

In Korea Patent Application No. 10-2020-0047784 technology, a nanoparticle porous carrier and flaxseed powder are sprayed on the roots or leaves of plants to prevent plant root rot, prevent soil agglomeration attached to plant roots, prevent pests, and prevent fungal growth , It presents a method for preventing virus pests and preventing plant growth, comprising a porous nano-particle carrier and flaxseed powder that sterilizes viruses, suppresses virus reproduction, suppresses reproduction of various bacteria and suppresses reproduction of insects.

In Korean Patent Application Laid-Open No. 10-2018-0069934, nitrogen is fixed by including 2 to 10 parts by weight of pyrrole and 1 to 8 parts by weight of 1,2-dimethylimidazole based on 100 parts by weight of water. It fertilizes the soil and makes a chelate material to make it easier to absorb minerals, so that the chelated mineral component is absorbed by grains and plants, thereby making it stronger against pests and pests, so there is little need to use chemical fertilizers and pesticides. A plant growth promoting composition is presented that is tasty and nutritious to produce alkaline agricultural products.

In Korea Patent Laid-Open Publication No. 10-2018-0134060 (A), water is added to a rare earth element mixture consisting of a rare earth element compound, chitosan liquid, citric acid powder, concentrated minerals, rice bran, corn flour, zeolite, molasses, and complex microorganisms. By providing a soil conditioner manufactured through a culturing step and a drying step later, as the soil conditioner mixed into the soil contains rare earth element compounds and liquid chitosan, the nutrients including the components of the soil conditioner are absorbed by the plant to grow the plant. It is possible to enhance immunity against pests and diseases, thereby maximizing the efficiency of preventing diseases and diseases of plants and at the same time maximizing the growth efficiency of plants. .

In Korea Patent Application Laid-Open No. 10-2018-0051690, drugs for controlling root diseases such as nutrients, fungicides, and insecticides are supplied to the root zone of the soil where crops (or trees, etc.) are planted, especially when crops are planted on both sides. A irrigation device for controlling root diseases and pests of crops is proposed to improve workability by adjusting the left and right intervals.

In Korea Patent Laid-Open Publication No. 10-2017-0122700 (A), a biodegradable polymer having a polymerization degree of 1500 to 2000, a degree of saponification of 95 to 99.8%, and a number average molecular weight of 50,000 to 80,000; plasticizer; crosslinking agent; Cellulose-based resin; and a mulching film having sterilization and insecticidal effects and a method for manufacturing the same.

In Korea Patent Laid-Open Publication No. 10-2017-0102687 (A), there is provided an irrigation device for controlling pests and pests generated in the roots of crops during soil cultivation, comprising: a drug tank having a drug inlet formed at the top thereof; an injection device holder in which a cylinder arm capable of height adjustment is bound to the body and a hose through which a drug is transported is formed therein; a buffer spring connected to the inner upper end of the holder to absorb shock; and an injection nozzle with freely adjustable spacing at the lower end of the buffer spring. A plant root pest control device that can improve growth and growth through observation is presented.

In Korea Patent Laid-Open No. 10-2015-0006645, pufferfish are soaked in potassium hydroxide (KOH) reagent for 5 to 7 days to decompose into pufferfish liquid, filtered through a sieve to remove organic matter, and methanol is added to pufferfish liquid from which organic matter has been removed. A nematode control agent using pufferfish venom is presented, which is extracted by adding and brewing, then adding acetone to form sediment.

In Korea Patent Laid-Open Publication No. 10-2011-0117329, salt is put on charcoal raw materials containing pine, bamboo and juniper, and then steam is recovered by heating it in a charcoal kiln to prepare crude wood vinegar, and aging and refining it. A first step of preparing wood vinegar; a second step of producing charcoal by further heating the charcoal kiln after the steam recovery of the first step; a third step of pulverizing the charcoal prepared above to prepare charcoal powder; a fourth step of adsorbing the charcoal powder by mixing wood vinegar in a weight ratio of 1: 10 to 10: 1; A fifth step of mixing water and charcoal powder in a ratio of 1: 50 to 100 of the charcoal powder containing the wood vinegar and water; and a sixth step of aging after putting the plums in the wood vinegar solution at a ratio of 50 to 150 g of plums per 1 kg of the wood vinegar prepared above.

In Korean Patent Laid-Open Publication No. 10-2011-0034316, it neutralizes the acidified soil by adsorbing pesticides or chemical fertilizer components that acidify the soil for planting crops or trees, and adsorbs heavy metals present in the soil to reduce the risk of heavy metals. A soil improver capable of reducing pollen moisture and removing odors and pests and pests and a method for manufacturing the same are presented.

Korean Patent Laid-Open Publication No. 10-2009-0049966 proposes a composition for nutrient supply and growth promotion and pest prevention of crops.

In Japanese Patent Application Laid-Open No. 2020-019789 (A), by treating the soil/growing substrate by drenching or drip application or immersion or soil injection, it is a harmful organism very suitable for controlling harmful organisms such as insects, mites, and nematodes. A method for the use and treatment of a nocicidal active carboxamide derivative for soil and seed application to provide a mixture is presented.

Japanese Patent Laid-Open No. 2004-529120 discloses a method for sterilizing soil or a substrate using a sulfur compound, which can provide an alternative compound for methyl bromide that can be used for all uses of soil or substrate treatment.

In Japanese Patent Laid-Open No. 2006-061003, there is no need to use chemicals such as soil disinfectants or soil insecticides, which have many problems in terms of safety and environmental pollution, and there is no need to use expensive soil heating devices or soil heating tools. In addition, it proposes a soil disinfection method with excellent safety, simplicity, versatility, workability and low cost, regardless of the soil environment.

Japanese Laid-Open Patent Publication No. 2009-024141 discloses a soil improver, fermented fertilizer and the same having a pest repelling effect that enables organic cultivation of crops without relying on chemical pesticides and disinfectants, and generally provides safe and secure crops widely. A manufacturing method is presented.

Japanese Laid-Open Patent Publication No. 2005-281591 proposes a functional soil improving material that solves the problem of odor in compost and has a fertilizer effect, insecticide, sterilization, and repelling effect from harmful tides.

Japanese Patent Laid-Open No. 2001-031517 discloses a method for improving soil sterilization and insecticide improvement and crop growth promotion method for using smoke generated when charcoal is burned for soil sterilization and insecticide improvement and crop growth promotion.

US Patent Publication No. 2005-0226902 discloses a method for chemically purifying soil by applying a mixture of sulfur (S) and a complex.

US Patent Laid-Open Publication No. 2013-0255144 discloses a soil pressure sterilization method and apparatus comprising the step of pulverizing the soil using a rototilling mechanism to generate a pulverized soil.

US Patent Laid-Open No. 2012-0144739 discloses a method and system for sterilizing the soil for growing Korean ginseng using an electron beam that removes fungi harmful to the growth and development of ginseng.

US Patent Publication No. 2012-0091123 discloses a method and system applicable to agricultural activities, pest control, industry, agriculture, forestry, etc. for controlling insects and other plant pests in crops.

US Patent Publication No. 2008-0149625 discloses soil sterilization using microwave energy, pest control, with means for directing a layer of soil from the ground to a conveyor that transports the soil through a microwave energy application area and then dispersing the soil back to the ground. A weed control device is presented.

US Patent Publication No. 2004-0082479 discloses a method for soil sterilization from pathogens by allicin prior to sowing or planting to protect plants from pathogenic organisms such as fungi, bacteria, protozoa and soil nematodes.

However, if pests and pests occur in the soil during crop cultivation in a poor domestic agricultural environment with a narrow land and high wage structure like Korea, it is realistic to apply the above technology to reduce economic damage and secure agricultural competitiveness while supplying high-quality agricultural products. has been perceived as inapplicable.

The purpose of this study is to develop agricultural technology that can release a small amount of a soil biocide that can provide long-term pest control effects with minimal manpower as well as protection of the soil and water environment while reducing damage to crops from pests and microorganisms during the crop cultivation process. It is a technology that started with the recognition of the necessary task.

The present application protects the soil and water environment by slowly releasing an environmentally friendly biocidal material from the soil by an encapsulation method of a biocide that does not contain pesticides for controlling pests and pests, and at the same time protects crops from pests. An object of the present invention is to provide a biocide and a method for manufacturing the same that reduce and provide a pest control effect with a minimum of manpower.

In addition, the present application is configured such that a pesticide-free biocidal material in a state that does not contain pesticides in order to control pests and pests from the soil, a diluting filler for diluting the biocidal material, and a coating material for coating the biocidal material and the diluting filler are mixed together And, by coating this mixture with a biocidal material by an encapsulation method, it slowly dissolves in the soil and uses a capsule-type sustained-release biocidal material that sequentially generates medicinal effects, and develops a farming method to prevent damage from continuous cultivation to increase agricultural competitiveness. The purpose is to disseminate the technology to be secured.

Since most pests and pests are derived from the soil, agricultural experts are ordering that more active soil disinfection is needed to overcome the chronic repeated crop failures centered on facility cultivation sites every year. As a result, the soil environment deteriorates and soil pests and pests occur, resulting in poor crop growth, yield, and quality.

One control prescription in the agrochemical industry is that pests such as root knot nematode and mushyst nematode caused by continuous crop failure and pathogens such as wilt, root rot, and black rot sclerotia remain dormant in the soil for a long period of time and continuously damage crops. In order to prevent damage from pests and pests, it is revealed that there is no alternative other than thorough soil disinfection.

According to the results of a survey on root-knot nematode infection in domestic facility cultivation areas published by the Rural Development Administration in 2018, root-knot nematode infection occurred in 42% of facility cultivation areas for fruits and vegetables, and by crops, 46% of strawberries, 45% of watermelons, 44% of cucumbers, and 44% of melons As 42% of peppers, 41% of peppers, and 31% of tomatoes are affected by root-knot nematodes, it is reported that the occurrence of pests in the soil has a significant impact on crop cultivation.

Accordingly, it has the advantage of greatly reducing the pests and pests generated in the soil by using highly toxic pesticides in order to reduce the damage of pests and pests generated in the soil, but due to its high toxicity, it can have a great adverse effect on the soil and water environment, and the medicinal substances It is supplied at once when spraying pesticides, and if it rains or water is supplied after spraying the pesticides, it is washed away with water and diluted rapidly, so it cannot provide a long-term effect of controlling pests and pests. There has been a problem of mobilizing a lot of manpower due to periodic cleaning work and contaminating the soil and water quality as it needs to be cleaned.

The inventors of the present invention, as a means for controlling pests and pests generated in the soil, by allowing the environmentally friendly biocidal substances from the soil to be released slowly by the encapsulation method for the pesticide-free biocidal substances, thereby protecting the soil and water environment while protecting the crops from pests and pests. Possibility to sufficiently solve the problem of using highly toxic pesticides to control pests and pests that have occurred in the soil so far in the case of reducing damage, protecting the soil and water environment, and providing a function for long-term pest control with minimal manpower Based on 100 parts by weight of the diluent filler, the present inventors added 1.5 to 25 parts by weight of biocides without pesticides and 3.5 to 55 parts by weight of the coating material. Contained soil biocide (mixture) is made, and this mixture is spray dried method, external gelation method (Extrusion/external gelation), emulsion-internal gelation method (Emulsification internal gelation), encapsulation method using enzyme It was confirmed that the object of the present application can be achieved from the fact that a sustained-release soil biocidal material can be obtained by a method selected from among or capsule filling method or compressed tablet method.

When the concentration of the biocidal material is high, the diluent filler has an excellent control effect from pests, but rather, the high concentration of the biocidal material may adversely affect the root environment of the crop. It aims at dilution by mixing with non-reactive substances, and the dilution filler is elvan, ocher, olivine, kaolin, metakaolin, and silicate minerals with a size of 0.1 to 100 μm. Mineral), Wollastonite, Pyrophyllite, Dolomite, Lithium Minerals, Magnesite, Bauxite, Bentonite, Pumice, Borate ), Serpentine, Acid clay, Iron Oxide, Garnet, Carbonate Minerals, Attapulgite, Zeolite, Sepiolite, Nephrite Nephrite, Apatite, Illite-Mica, Feldspar, Barite, Talc, diatomaceous earth, Graphite, Hectorite , 1 of Clay Minerals, Zirconium Minerals, Tourmaine (Tourmaline), Fly ash, Blast furnace slag, Perlite, Vermiculite It is preferred that more than one type of powder is selected.

The biocidal material does not contain a strong toxic pesticide, and is used for a function to control pests and diseases occurring in the soil for growing crops, and the biocidal material for this purpose is ammonium sulfamate (Ammonium sulfamate), hypochlorous acid One or more of sodium (NaClO, Sodium hypochlorite), sodium chlorite (NaClO2, Sodium chlorite), chlorocalqui (Calcium hypochlorite), chloramine-T, and sulfur (S) may be selected and used.

The coating material has a function for the coating of the encapsulation process to reduce the discharge concentration of the active ingredient of the biocidal material to be discharged for a long period of time, and a binder (Binder) for forming the diluted filler and the biocidal material in a certain shape according to the technical configuration of the present application. ), it should be selected in consideration of the physical and chemical properties of the capsule, and preferably has low hygroscopicity and low viscosity, so it is easy to operate during the encapsulation process, and has excellent emulsification power and emulsion stability, and processing and storage It is preferable to select a material that has low reactivity with a biocidal substance, suppresses the release of a biocidal substance, has excellent protection and film formation ability of a biocidal substance from the external environment, and is economical, and the coating material for this purpose is alginic acid Sodium alginate, Gum arabic, Guar gum, Carrageenan, Locust bean gum, Gellan gum, Protein, Starch, Gypsum, Paraffin wax (Paraffin wax), microcrystalline wax, bees wax, wool wax (lanolin), carnauba wax, candelilla wax, polyethylene wax ), polypropylene wax, chitosan, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid ( Arachidic acid, behenic acid, lignoceric acid, cerotic acid, water-dispersed polyurethane resin (Polyurethane), water-dispersed acrylic resin (Polyacrylate), polyvinyl alcohol (PVA, Polyvinyl alcohol), water-dispersed vinyl acetate resin (PVAc, Poly vinyl acetate) at least one coating material may be selected and used.

In addition, among the encapsulation means to which the present technology is applied, the encapsulation means by the spray drying method is the oldest commercialized method for microencapsulation in the overall industry, and is widely used because it is economical and has the highest production yield. encapsulation method.

Microencapsulation by spray drying refers to dispersing the target material after hydrating the coating material and spraying the mixture into a high-temperature chamber. It can cause evaporation and form matrix or multinuclear microcapsules, and the advantages of this process are ease of mass production, low manufacturing cost, and continuous production of microcapsules.

In addition, the encapsulation method by the external gelation method is one of the oldest and most common methods of encapsulation processes using hydrocolloids such as alginate or carrageenan as a coating material. A capsule of insoluble calcium alginate is prepared by mixing the diluted filler with the syringe (lab scale) or extruder (pilot scale) and _{supplied to a gelling solution such as CaCl 2 .}

Heat-stable gel can be formed by adding calcium ions to an aqueous solution of sodium alginate (Na-alginate). Calcium ions diffuse into the alginate over time to form a hard gel. At this time, the size and shape of the capsule may vary depending on the diameter of the nozzle used, _{the distance between the nozzle and the CaCl 2} solution, etc. This method is simple and economical, and above all, it is an environmentally friendly encapsulation method because it does not use a toxic solvent during the encapsulation process. can do.

In addition, the emulsion-internal gelation method is a method designed to improve the disadvantages of the existing external gelation method that drops the coating material solution drop by drop. As a widely used method, it can be carried out in a two-step process of emulsification and phase separation. First, a hydrocolloid solution containing beneficial bacteria from the soil is mixed with an emulsifier-added oil and fat and homogenized to form W/O type. When an emulsion is prepared and the gelling solution is added while slowly stirring the emulsion, a hard microcapsule is formed through an internal gelation process and separated from the oil phase. Compared to the external gelation method, the capsule shape is uniform and scale-up is relatively easy.

In addition, the encapsulation method using an enzyme is an encapsulation method using enzymatic gelation of a protein-based coating material such as whey protein or casein, and the encapsulation method using the transglutaminase enzyme is well known. Compared to that, the protective effect of beneficial bacteria in the soil can be significantly increased.

In addition, the capsule filling method can be carried out by mobilizing a capsule filling device consisting of an empty capsule feeding device, a capsule dispensing device, a powder dispensing device, a metering disk mechanism, a capsule filling sealing mechanism, a main delivery device of the box, and an electric control system, The powder coated with the coating agent is mixed with a biocidal substance and a diluted filler inside a soft capsule made with gelatin or sucrose as the main raw material and glycerin, gum arabic, agar, colorant, and preservative added or gelatin, glycerin, and sorbitol as raw materials. It can be applied as a method of filling the powdered powder or a mixed powder of a biocidal material and a diluting filler.

In addition, the compressed tablet (錠劑; Tablet) method is a method of manufacturing a powder in which an active ingredient of a biocidal substance is mixed with a diluent filler and a coating agent as excipients in a certain form by compression molding, and can be manufactured in a certain tablet form And it has the advantage of being able to mass-produce.

As described above, the means for gradually releasing the sustained-release soil biocide so that the active ingredient of the biocidal material can be gradually released in the present application is to provide a uniform biocidal material to the soil according to the crop to be grown, or to plan the yield of the agricultural program Of course, it can be selected from among suitable encapsulation means according to the quantity, and can be applied by changing the encapsulation method according to the type of biocidal material and covering material and the situation of pests and diseases generated in the soil.

The present technology solves this problem as it causes a lot of economic damage to facility-cultivating farmers every year due to the deterioration of the soil environment and the deterioration of crop growth, yield, and quality when pests and pests occur in the cultivated soil during the process of growing crops. In order to do this, farmers who grow crops inevitably control pests and pests in the soil with highly toxic pesticides, which has a big problem that it can be fatal to the soil and water environment and human body. There has been a fundamental problem in that it takes a lot of manpower and time, which greatly reduces the competitiveness of farms. Continuous cultivation of crops by reducing damage to crops from pests and microorganisms generated in the soil due to the technological composition that can be slowly released from the soil for a long period of time, while protecting the soil and water environment, as well as demonstrating the function for controlling pests for a long time with minimal manpower It can provide a great effect in producing high-quality agricultural products for a long period of time while reducing the damage from pests and diseases in the soil.

Prior to describing the embodiments of the invention for implementing the technical idea of the present application, the terms or words used in the specification or claims of the present application should not be construed as being limited to conventional or dictionary meanings, The protection scope of the present application should be interpreted in meaning and concept consistent with the technical idea of the present invention, and the examples described in the present specification are only the most preferred embodiment of the present invention and do not represent all the technical ideas of the present invention. It should be understood that, at the time of the present application, there may be various equivalents and modifications that can be substituted for them.

Hereinafter, the present invention will be described in detail by way of examples to which the technical idea of the present application is applied.

Example 1

Based on 100 parts by weight of dolomite (dolomite) powder (Daewon Ceramics Co., Ltd.) with an average size of 50 μm or less as a dilution filler, 1.5 parts by weight of chloramine-T (Samjeon pure medicine) and sodium alginate (Samjeon pure medicine) as a biocidal substance Weighed 3.5 parts by weight, supply water while stirring to completely dissolve chloramine-T and sodium alginate, and while stirring the solution, calcium chloride diluted 1/10 (Samjeon Soonyak Co., Ltd., CaCl ₂ .2H ₂ O) was added It was supplied to form an insoluble calcium alginate coating material, and dried in a dry oven at 100° C. to prepare a sustained-release soil biocidal material encapsulated by an external gelation method.

The prepared sustained-release soil biocidal material was diluted to 10% by weight in the soil of a plantation where strawberries were continuously grown in a plastic house for 6 years, and the chloramine-T content change was measured and confirmed 4 times at intervals of 15 days, and the yield of strawberries was confirmed.

Example 2

Based on 100 parts by weight of 4A-zeolite (Zeolite, Zeo Builder, Inc.) powder with an average size of 20 μm or less as a dilution filler, 6.5 parts by weight of sodium chlorite powder (Daemyung Chemical Co., Ltd.) as a biocidal substance and 6.5 parts by weight as a coating material Weigh 15 parts by weight of stearic acid (Samjeon Pure Chemical Co., Ltd.) and stir evenly to prepare a mixture containing a diluted filler, a biocidal material and a coating material. Thus, a sustained-release soil biocidal material was prepared by the compression refining method, and the produced sustained-release soil biocidal material was diluted to 5.0% by weight in the soil of the cultivation area where cucumbers were continuously grown in a plastic house for 7 years, and a total of 4 times at 15-day intervals. The content of chlorine dioxide (ClO ₂ ) was confirmed, and the yield of cucumbers was confirmed.

Example 3

Based on 100 parts by weight of pearlite (Perlite, Kyungdong Co., Ltd.) powder with an average size of 100 μm or less as a dilution filler, 25 parts by weight of chlorocalky powder (Cheongsan Chemtech Co., Ltd.) as a biocidal substance and beeswax (Bees) as a coating material Weigh 30 parts by weight of wax. by sustained release soil biocidal manufactures a substance and dilute the prepared sustained-release soil biocidal substances to 3.0% by weight to the plantation soil series the peppers in greenhouses five years and dioxide, a total of four times at 15-day intervals chlorine (ClO ₂ ) was confirmed, and the yield of red pepper was confirmed.

Example 4

Based on 100 parts by weight of kaolin (Kaolin, Nakwoo Industrial Co., Ltd.) powder with an average size of 10 μm or less as a dilution filler, 30 parts by weight of 12% sodium hypochlorite solution (Daemyung Chemical Co., Ltd.) as a biocidal substance and 30 parts by weight as a coating material Weigh 55 parts by weight of water-based acrylic emulsion resin (Youngjin Texchem Co., Ltd.) and uniformly stir to prepare a water-soluble mixture diluted with water containing a diluted filler, a biocidal material and a coating material, and the water-soluble mixture diluted with water A sustained-release soil biocidal material was manufactured by spray drying with a spray dryer (Model 032) of Spraying Systems Co., and the produced sustained-release soil biocidal material was applied to the soil of a plantation where strawberries were continuously grown in a plastic house for 6 years. _{%, the content of chlorine dioxide (ClO 2} ) was confirmed four times at intervals of 15 days, and the strawberry yield was confirmed.

Comparative Examples 1-4

A comparative experiment was carried out in the same manner as in Examples 1 to 4, except that the coating material was not included, and the encapsulation or compression tablet method was not mobilized.

In order to examine the sustained-release tendency of biocidal substances for the soils carried out in Comparative Examples 1 to 4 and Examples 1 to 4, 5 g of each soil was accurately taken in a 1 liter polyethylene container, and 500 ml of distilled water was supplied. After shaking for exactly 5 minutes, it was filtered and confirmed by each test method, and water was supplied to the soil when moisture was needed during the process of growing crops, at this time Comparative Examples 1 to 4 and Examples A certain amount of water was supplied to the soil in the same way in steps 1 to 4.

Among the test items for biocidal substances, the content of chloramine-T (C ₇ H ₇ ClNNaO ₂ S·3H ₂ O) was carried out by the chloramine-T test method, and the content of _{ClO 2 corresponding to sodium chlorite was} The ClO content corresponding to sodium hypochlorite and calcium hypochlorite is hydrogen peroxide and sodium hypochlorite among foods developed by the Ministry of Food and Drug Safety. It was confirmed by the analysis method of The yields for the strawberries, cucumbers and peppers were confirmed as the average daily yield per 200 pyeong.

Table 1 shows the experimental results of Comparative Examples 1-4 and Examples 1-4.

division content of biocidal substances Average daily yield/200 pyeong day 15th
result 30 days
lapse 45 days
lapse 60 days
result Strawberry
(kg) cucumber
(kg) pepper
(kg) Example 1
(chloramine-T) 45
ppm 43
ppm 39
ppm 34
ppm 31
ppm 127 - - Example 2
(ClO ₂ ) 87
ppm 84
ppm 76
ppm 70
ppm 63
ppm - 198 - Example 3
(ClO) 136
ppm 121
ppm 116
ppm 108
ppm 97
ppm - - 36 Example 4
(ClO) 124
ppm 116
ppm 104
ppm 89
ppm 81
ppm 133 - - Comparative Example 1
(chloramine-T) 135
ppm 8.9
ppm detection
no detection
no detection
no 86 - - Comparative Example 2
(ClO ₂ ) 260
ppm 23
ppm 1.8
ppm detection
no detection
no - 155 - Comparative Example 3
(ClO) 560
ppm 87
ppm 2.6
ppm detection
no detection
no - - 27 Comparative Example 4
(ClO) 366
ppm 54
ppm 1.4
ppm detection
no detection
no 98 - -

As shown in Table 1, in Comparative Examples 1 to 4, the coating material was not included, and the soil biocidal material was diluted and contained in the soil in a state where the encapsulation or compression purification method was not mobilized. of biocidal substances were detected, and it can be confirmed that the concentration is rapidly reduced to a very low concentration every time the period elapses. In the case of the strawberry of Comparative Example 1, 86 kg, the cucumber of Comparative Example 2 155 kg, and the pepper of Comparative Example 3 27 kg, even in the average daily yield of a crop per 200 pyeong, The strawberry of Comparative Example 4 showed a poor yield of 98 kg.

On the other hand, as in Examples 1 to 4, a relatively low concentration of a disinfectant material was detected on the same day that the soil biocidal material was diluted and included in the soil while the encapsulation or compression purification method was mobilized, and in particular, the period It was confirmed that the soil biocidal substance in a very gentle concentration was reduced even after the elapse of time, and it was confirmed that the yield of the crops was much higher than that of Comparative Examples 1 to 4 due to this effect.

Therefore, the present application is a method to significantly reduce pests and pests generated in the soil in the prior art, and the use of highly toxic pesticides solves the problem that can have a great adverse effect on the soil and water environment as well as the human body, and pesticide-free sterilization for controlling pests and pests in the soil Due to the sustained-release technology composition of biological materials, it protects the soil and water environment while reducing damage to crops from pests and pests, and provides a function for long-term pest control with minimal manpower, as well as normal growth of crops, and high-quality, high-yield fruits. It is expected that it will make a significant contribution to

In addition, the technical idea of the present application is based on 100 parts by weight of the diluted filler, 1.5 to 25 parts by weight of the biocidal function and 3.5 to 55 parts by weight of the coating material are included to obtain a soil biocide and apply the spray drying method to first After encapsulation, a second active ingredient, which is a mixture of a dilution filler of another ingredient, a biocidal function of another ingredient, and a coating material of another ingredient, is added to the outside of the primary encapsulation, for example, external gelation ( Extrusion/external gelation) is applied as a process in which the secondary encapsulation process is added, so the primary drug effect appears after 5 days, for example, due to the difference in solubility in water of the coating material, and the secondary drug effect of another characteristic after 10 days It is expected that agricultural competitiveness can be secured by developing a farming method that includes the technical idea to be applied so that

Claims (4)

In the method for producing a sustained-release soil biocide capable of long-term control of soil-borne diseases and pests,
A first-step process in which a powder selected from Kaolin, Dolomite, Zeolite, and Perlite is prepared as a dilute filler;
Sodium hypochlorite (NaClO, Sodium hypochlorite) _{, sodium chlorite (NaClO 2} , Sodium chlorite), chlorocalqui (Calcium hypochlorite), chloramine-T (Chloramine-T) that has a biocidal function against soil-borne pests The second step process to be prepared, and
A third step process in which a coating material selected from sodium alginate, bees wax, stearic acid, and aqueous acrylic emulsion resin is prepared as a coating material to impart a sustained-release function to soil biocides class,
Based on 100 parts by weight of the diluted filler prepared in the first step process, 1.5 to 25 parts by weight of the biocidal function prepared in the second step process and 3.5 to 55 parts by weight of the covering material prepared in the third step process are included. The fourth step process in which this is made, and
A spray drying method, an external gelation method, an emulsion-internal gelation method, an encapsulation method using an enzyme, a capsule filling method, A fifth step process applied to obtain a sustained-release soil biocide by a process selected from the compressed tablet method
A method for producing a sustained-release soil biocide comprising a. According to claim 1,
The method for producing a sustained-release soil biocide, characterized in that the dilution filler is applied in a size of 0.1 to 100 ㎛. In the farming method using a sustained-release soil biocide as a means to solve the pest problem caused in the continuous cultivation process,
A first-step process in which a powder selected from Kaolin, Dolomite, Zeolite, and Perlite is prepared as a dilute filler;
Sodium hypochlorite (NaClO, Sodium hypochlorite) _{, sodium chlorite (NaClO 2} , Sodium chlorite), chlorocalqui (Calcium hypochlorite), chloramine-T (Chloramine-T) that has a biocidal function against soil-borne pests The second step process to be prepared, and
A third step process in which a coating material selected from sodium alginate, bees wax, stearic acid, and aqueous acrylic emulsion resin is prepared as a coating material to impart a sustained-release function to soil biocides class,
Based on 100 parts by weight of the diluted filler prepared in the first step process, 1.5 to 25 parts by weight of the biocidal function prepared in the second step process and 3.5 to 55 parts by weight of the covering material prepared in the third step process are included. The fourth step process in which this is made, and
A spray drying method, an external gelation method, an emulsion-internal gelation method, an encapsulation method using an enzyme, a capsule filling method, A fifth step process selected from the compressed tablet (錠劑; Tablet) method and
A sixth step process of fertilizing crops with the sustained-release soil biocide obtained in the fifth step process to solve the problem of pests and pests occurring in the continuous cultivation process
Agricultural method using a sustained-release soil biocide, characterized in that it comprises a. In the sustained-release soil biocide that can control soil-borne diseases and pests for a long time,
A first-step process in which a powder selected from Kaolin, Dolomite, Zeolite, and Perlite is prepared as a dilution filler;
Sodium hypochlorite (NaClO, Sodium hypochlorite) _{, sodium chlorite (NaClO 2} , Sodium chlorite), chlorocalqui (Calcium hypochlorite), chloramine-T (Chloramine-T) that has a biocidal function against soil-borne pests The second step process to be prepared, and
A third step process in which a coating material selected from sodium alginate, bees wax, stearic acid, and aqueous acrylic emulsion resin is prepared as a coating material to impart a sustained-release function to soil biocides class,
Based on 100 parts by weight of the diluted filler prepared in the first step process, 1.5 to 25 parts by weight of the biocidal function prepared in the second step process and 3.5 to 55 parts by weight of the covering material prepared in the third step process are included. The fourth step process in which this is made, and
A spray drying method, an external gelation method, an emulsion-internal gelation method, an encapsulation method using an enzyme, a capsule filling method, A fifth step process applied to obtain a sustained-release soil biocide by a process selected from the compression tablet method
A sustained-release soil biocide that is provided to have an effect of controlling soil-borne diseases and pests.