KR20220057782A - Method for producing organic fertilizer having activity of plant disease control using spent mushroom substrate - Google Patents

Abstract

The present invention relates to a method for manufacturing an organic fertilizer having plant disease controlling activity using a medium after harvesting mushrooms. The organic fertilizer of the present invention is an eco-friendly fertilizer simply prepared at low cost using waste medium that is discarded after being used for mushroom cultivation, and can be effectively used for controlling plant diseases.

Description

Method for producing organic fertilizer having activity of plant disease control using spent mushroom substrate}

The present invention relates to a method for producing an organic fertilizer having plant disease control activity using a medium after mushroom harvest.

There are fungi, bacteria, and viruses as pathogens that cause plant diseases, and among them, plant diseases caused by fungi and bacteria account for more than 80%. Although most of the plant disease control methods rely on chemical methods using pesticides, effective eco-friendly methods are required due to concerns about drug resistance and environmental pollution. As an eco-friendly method, microbial pesticides using antagonistic microorganisms and control agents using natural plant-derived substances are being developed.

Recently, the growth inhibitory effect of mushroom-derived culture filtrate on plant disease fungi and plant disease bacteria has been applied to the control of plant diseases to seek agricultural use. However, in order to apply the mycelium culture filtrate to the packaging, ancillary process costs such as mass culture and extraction systems are required, which may cause a problem in that economic efficiency is lowered. As an alternative to this problem, a spent mushroom substrate can be used. After harvesting mushrooms, the medium has dense mycelium and contains a wide variety of physiologically active substances such as various lignolytic enzymes and secondary metabolites. Do.

Of the domestic mushroom production, enoki mushrooms, shiitake mushrooms, and oyster mushrooms account for more than 88%. The production of shiitake mushrooms ( Lentinula edodes ), a representative forest mushroom, is about 31,000 tons/year, and it is characterized by rapid conversion from log cultivation to sawdust bag cultivation. As the production of mushrooms increases, the culture medium after harvesting mushrooms as a by-product is also increasing, and approximately 1 million tons/year or more are released.

The organic fertilizer market is worth 850 billion won (2018) annually, and it is known that compost occupies an average of 70% and oil-based fertilizer 30%. In general, since compost is in a powder state, it is inconvenient to fertilize and has disadvantages in that it does not maintain long-term effectiveness. In addition, pesticide components higher than the standard value are detected in livestock manure, the main raw material of compost, which is an obstacle to the use of eco-friendly organic cultivation. Oilbak fertilizer is made from the residues (castor, rapeseed, soybean, rice bran, etc.) remaining after squeezing vegetable oil from various seeds without a fermentation process. It has the advantage of being odorless and convenient to use. Recently, ricin, a toxic substance 6,000 times that of cyanide, has been detected, causing controversy over its toxicity. After harvesting mushrooms, the medium is saccharified with the strong lignolytic enzyme activity produced by mushrooms, and the mycelium produces various polysaccharides, increases protein, ash, nitrogen, and phosphorus components, and decreases fat, fiber, lignin, and cellulose, resulting in plant growth By supplying organic matter and trace elements useful for promotion, it not only helps plant growth, but also improves soil physical properties such as soil voids and water holding capacity.

On the other hand, Korea Patent No. 1518442 discloses 'a method for producing organic fertilizer using wild ginseng culture filtrate and mushroom waste medium', but the method for producing organic fertilizer having plant disease control activity using the medium after harvesting mushrooms of the present invention There is nothing disclosed about

The present invention has been derived from the above needs, and the present inventors have fermented the shiitake mushroom post-harvest medium (LeSMS), the Roeaceae mushroom post-harvest medium (HeSMS), or the oyster mushroom post-harvest medium (PoSMS) collected from mushroom farms. Organic compost was prepared by fertilization, and the aged LeSMS or HeSMS increased the growth of pepper plants and the chloroplast content of pepper leaves, but it was confirmed that PoSMS did not increase the growth of pepper plants. In addition, by confirming that the aged LeSMS has a control effect on pepper late blight induced by Phytophthora capsici , the present invention was completed.

In order to solve the above problems, the present invention provides a method for producing an organic fertilizer having plant disease control activity, comprising the step of ripening a mushroom substrate after harvesting (spent mushroom substrate).

In addition, the present invention provides an organic fertilizer having plant disease control activity produced by the above method.

The organic fertilizer of the present invention is an eco-friendly fertilizer that is manufactured by aging the waste media discarded after mushroom cultivation, and can be easily manufactured at low cost without requiring complicated facilities such as a bacterial culture facility and an extraction system, and plant disease. It can be usefully used for control.

1 is a result of measuring the temperature change in the maturation process using a medium after harvest of shiitake (Le), roe deer mushroom (He) or oyster mushroom (Po).
2 is a photograph showing the ripening state according to the ripening period of the medium after mushroom harvesting.
3 is a photograph showing the growth effect of red pepper seedlings according to the treatment with the shiitake mushroom medium (LeSMS) and the matured shiitake mushroom medium after harvest (LeCSMS).
4 is a photograph showing the growth state of red pepper seedlings treated with a medium (LeCSMS) after harvesting ripened shiitake mushrooms. Company N compost: commercial livestock manure compost
Figure 5 is a photograph showing the growth state after inoculating the pepper blight pathogen ( Phytophthora capsici ) to the pepper seedlings grown by treating the mature shiitake mushroom medium (LeCSMS) after harvesting.
6A is a process diagram of granular organic fertilizer production using mature mushroom post-harvest medium (CSMS), and FIG. 6B is a mixture of matured shiitake mushroom post-harvest medium (LeCSMS) and matured post-harvest shiitake mushroom medium (HeCSMS). It is a photograph of the granular organic fertilizer prepared according to the above process chart using
7 is a photograph showing the growth state of lettuce treated with granular organic fertilizer prepared using a mixture of matured shiitake mushroom post-harvest medium (LeCSMS) and matured shiitake mushroom post-harvest medium (HeCSMS).

In order to achieve the object of the present invention, the present invention provides a method for producing an organic fertilizer having plant disease control activity, comprising the step of ripening a mushroom substrate after harvesting.

As used herein, the term 'fertilizer' refers to any material that supplies one or more elements necessary for normal growth of plants, and includes organic fertilizers (consisting of decomposed plant/animal substances) and inorganic fertilizers (chemical substances and made of inorganic materials), and the like.

In the method according to an embodiment of the present invention, the mushroom may be one or more of shiitake mushrooms ( Lentinula edodes ) and Hericium erinaceum , but is not limited thereto.

In the method according to one embodiment of the present invention, the plant disease is Phytophthora capsici ( Phytophthora capsici ), Alternaria solani ( Alternaria solani ), Botrytis cinerea ( Botrytis cinerea ), Corynespora Corynespora cassiicola ), Fusarium oxysporum ), Rhizoctonia solani ( Rhizoctonia solani ) and Sclerotinia sclerotiorum ) by any one pathogen selected from the group consisting of It may be induced, and preferably, it may be induced by the Phytophthora capsaici pathogen, but is not limited thereto.

In the method according to an embodiment of the present invention, the method for producing an organic fertilizer having plant disease control activity is specifically,

(1) obtaining a medium after mushroom harvest;

(2) adjusting the moisture content of the powder to a level of 60 to 65% (v/w) after grinding the medium after harvesting the mushrooms obtained in step (1);

(3) After harvesting the mushrooms whose moisture content is controlled in step (2), the powder of the medium is put into a ripening reaction tank and aged at 25-25° C. for 25-35 days; and

(4) drying the medium after harvesting the ripened mushrooms in step (3); may include, but is not limited thereto.

In the method according to an embodiment of the present invention, the medium after harvesting the mushrooms in step (1) is preferably, but not limited to, solid state fermentation remaining after cultivating the mushrooms.

The solid medium may include sawdust and a nutrient source, and the nutrient source may include, but is not limited to, rice bran, bran, beet pulp, corn cob, cottonseed meal, cottonseed skin, K-pokbak, and the like.

In the method according to an embodiment of the present invention, the moisture content of the medium powder after harvesting the mushrooms in step (2) may be adjusted to a level of 60 to 65%, but is not limited thereto. To prevent microbial contamination due to the presence of moisture, it is desirable to control the moisture content of the medium after mushroom harvesting.

In the method according to an embodiment of the present invention, the incubated reaction tank of step (3) has an air injector built into the ground, so that air can be supplied at intervals of 1 to 3 hours for 14 to 16 minutes, preferably 2 It may be to input the air every 15 minutes at a time interval, but is not limited thereto. In the upper part of the aging reactor, air can be circulated, so that gases such as ammonia gas can be discharged and deodorized.

In the method according to an embodiment of the present invention, in the fermentation of step (3), after the mushroom is harvested, after the powder of the medium is put into the fermentation tank, after 6 days, the aging effect occurs by propagation of high-temperature resistant microorganisms, It is maintained at a high temperature at 55~60℃ for 7~20 days, so that fertilization proceeds. When the temperature drops to 25-35° C. after completion of the high-degradation process and the completion of pre-ripening, the ripening process can be performed for 25-35 days to increase the degree of completion of pre-ripening.

The present invention also provides an organic fertilizer having plant disease control activity produced by the above method.

In the present invention, the organic fertilizer prepared by fermenting the medium after harvesting shiitake mushrooms has excellent control effect on pepper late blight induced by Phytophthora capsici pathogen.

The organic fertilizer according to the present invention may be formulated in various forms such as liquid, powder, pellets or granules of an appropriate size using a general formulating machine, but is not limited thereto. The formulated organic fertilizer of the present invention may be used as it is, or air dried at room temperature, or dried by freeze-drying or high-temperature drying method.

In the present invention, organic fertilizers were formulated in the form of granules (pellets), and dried so that the moisture content of the medium after harvesting mature mushrooms was 15-20%.

Hereinafter, the present invention will be described in detail by way of Examples. However, the following examples only illustrate the present invention, and the content of the present invention is not limited to the following examples.

Materials and Methods

1. Medium ripening after mushroom harvest

After harvesting shiitake mushrooms at a mushroom farm, the medium (hereinafter, SMS), roe deer SMS, and oyster SMS are collected and pulverized, and the SMS powder is adjusted to have a moisture content of 60 to 65%, followed by shiitake SMS, roe deer SMS or oyster SMS was put into each of the pre-cooked reactors. When the SMS is put into the fermentation tank, after 6 days, the aging effect occurs due to the propagation of high-heat resistant microorganisms. After the high temperature aging process was completed and the temperature was lowered to 25 ~ 35 ℃ after completion of the aging process, the ripening process was performed for 25 to 35 days to increase the degree of completion of the ripening process. When the maturation and maturation of the medium was completed after harvesting the mushrooms, hot air drying was performed so that the moisture content was 15 to 20% to finally prepare an aged organic fertilizer.

An air inlet pipe was installed at the bottom of the tray of the incubation reactor, and air was fed in every 2 hours with a compressor for 15 minutes, and the compost was turned over for air circulation at intervals of once a week.

In order to measure the temperature change that appears during the SMS ripening process, about 1 ton of matured sea level SMS, roe deer SMS, or oyster SMS is put into a tray made of panels (2 m wide × 2 m long × 1 m high). , an automatic temperature sensor (Yokogawa, Japan) was installed in three locations to automatically record the temperature change during the SMS fermentation process by time.

2. Proficiency test

For the evaluation of compost maturity, the measurement method (Comback method) and the seed germination rate test specified in the fertilizer quality inspection method and sampling standards were applied. Adjust the moisture of the immature SMS compost to around 50%, leave it for 24 to 48 hours, put it in the reaction container, fix the compost immature kit (Kit A, Kit B: for ammonia and carbon dioxide measurement) to the lid and close it. The reaction was carried out at room temperature for 30 minutes. After the reaction was completed, the kit was placed in a comb-bag (CoMMe-100) and compost maturity was measured. The degree of ripening is completed (composting of the compost is complete), late-season (the state where the compost is almost finished), mid-season (a state that requires more ripening period), early stage of incompetence (initial state in which ripening is in progress), and infertile ( It was evaluated as a state in which there is almost no progress). Shiitake SMS, roe roe beetle SMS, and roe deer SMS after ripening were named LeCSMS, HeCSMS, and PoCSMS, respectively.

In addition, for the seed germination rate assay of LeCSMS, HeCSMS and PoCSMS, 50 ml of distilled water was added to 10 g of each CSMS sample, and the solution extracted with hot water at 80 ° C. for 2 hours was filtered through 3M paper to obtain 10 ml of the extraction solution from which impurities were removed. After adding it to a 90 mm Petri dish lined with 2 pieces of filter paper, 30 radish seeds ( Raphanus sativus L.) were added and cultured at 25°C for 5 days to investigate the germination rate and root length. As a control, distilled water was used.

The seed germination index (GI) was indexed using the germination rate (GR) and the root length (Root extension, RE), and the following formula was used. GI=(GR×RE), GR=(germination rate/control germination rate)×100, RE=(root length/control root length)×100.

3. Physicochemical analysis of mature mushroom post-harvest medium (CSMS)

CSMS was analyzed by requesting the AT Analysis Center designated as an organic agricultural material testing institution by the National Agricultural Products Quality Management Service. Total nitrogen content (Kjeldahl method; Bremner, 1965), substitution cation K ⁺ , Ca ²⁺ , Mg ²⁺ (1 N NH ₄ -acetate pH 7.0, AAS, atomic absorption spectroscopy), and effective phosphoric acid content were determined by Lancaster method. was used for analysis. The heavy metal concentration was measured with an Inductively Coupled Plasma spectrometer (ICP) after treatment with nitric-hydrochloric acid. pH and electrical conductivity (EC) were measured after mixing the sample and distilled water at a ratio of 1:10 (w/v), respectively, and stirring for 1 hour. The organic matter was measured by using the painting method (Ben-Dor and Banin, 1989), and after heating at 600° C. for about 2 hours, the amount of moisture was excluded.

4. Plant Growth Effect of Aged Mushrooms After Harvesting Medium (CSMS)

In order to investigate the plant growth effect of CSMS, top soil (pitmos 65: perlite 35, v/v) was put in a plug tray, and pepper seeds were sown and then grown as seedlings for 3 weeks. The CSMS composition was mixed in a ratio of CSMS 20: top soil 80 (v/v) and put into a pot (10 cm in diameter), and pepper seedlings were transplanted and grown for 4 weeks. The effect was investigated. As a control, commercial soil (Commercial Soil Bed, CSB) was used as a control, and commercial livestock manure compost (company N) used as a control group was mixed with the top soil at the same mixing ratio of CSMS.

5. Determination of chloroplast content in pepper leaves

Put 0.5 g of red pepper leaves in a mortar, crush them, mix 4 ml of 99% acetone and 2 ml of ethanol, transfer them to a 10 ml tube, store them in a dark freezer for 30 minutes, and centrifuge them at 2,000 rpm for 10 minutes. separated. 5 ml of a mixed solution of acetone 2: ethanol 1 (v/v) was added to the supernatant and mixed, and absorbance wavelengths were measured at 663 nm and 645 nm. Measurement of photosynthetic pigment is as follows.

Chlorophyll a (mg/g) = (12.7 × A663) - (2.59 × A645) (1)

Chlorophyll b(mg/g)=(22.9×A645)-(4.7×A663) (2)

total Chlorophyll(mg/g)=(8.2×A663)+(20.2×A645) (3)

Example 1. Temperature change according to ripening of the medium after mushroom harvesting

The post-harvest medium (SMS) of the shiitake mushroom, roe deer oyster mushroom, and oyster mushroom of the present invention was selected and used because its NPK content and plant active ingredients were comparatively superior to SMS of other mushrooms.

As a result of measuring the temperature change during the SMS ripening (composting) process, the elevation LeSMS began to rise rapidly to 55℃ or higher from the 6th day of ripening, maintained at a high temperature of 50℃ or higher for 7 days, and then 50℃ from the 8th day. It started to decrease below and was maintained at the level of 40~35℃ to end composting. The temperature change of HeSMS compost of roe deer was similar to that of LeSMS above sea level. In PoSMS, the temperature began to rise rapidly from the 4th day of incubation to about 70°C and decreased to 30°C from the 15th day, and was maintained at the level of 25-30°C to complete composting (FIG. 1).

In addition, it can be seen that a lot of mold is formed when about 7 days have elapsed, but after about 1 month of maturity, the mold existing on the surface disappears and the SMS is matured (FIG. 2). Fermentation of various microorganisms causes temperature change, and the organic matter of SMS is rapidly decomposed due to the metabolic reaction of thermophilic microorganisms, and the temperature range of 52 to 60 ° C is known as the optimum temperature for matrix decomposition microbial activity.

In addition, the degree of ripening was investigated by setting the time when the ripening process was completed as 30 days, through the fact that the temperature continued to rise after the high temperature rises during the ripening process of shiitake, roe deer roe deer, and oyster SMS. The degree of ripening was measured by the CoMMe-100 method, and in all SMS, the level of ripening was 80% or more, which satisfies the fertilizer process standards.

As a result of examining the radish germination index for the immature level test, the germination rate of the matured shiitake SMS (LeCSMS) treated group was 131%, which was increased compared to the untreated control group, and the matured roe deer horseradish SMS (HeCSMS) treated group showed a germination rate of 80.3%. It showed that it met the germination index of over 70% of the fertilizer process standards, while the unripe oyster SMS (PoCSMS) treated group had a low germination rate of 69%, which impeded seed germination, and the physicochemical changes according to composting had an effect on seed germination. was expected to have an effect (Table 1).

Example 2 Physicochemical changes according to maturation of the medium after mushroom harvest

Physicochemical changes of Shiitake SMS, Hexagonalus SMS and Oystertail SMS, aged Shiitake LeCSMS, Hexagon HeCSMS, and Oystertail PoCSMS were investigated. The main investigation items were pH, electrical conductivity (EC), heavy metals, NPK, Mg and Ca content. Referring to Table 2 below, the pHs of LeSMS, HeSMS and PoSMS were acidified to 4.1, 4.8, and 5.8, respectively, but the pHs of the aged LeCSMS, HeCSMS and PoCSMS were highly changed to pH 6.9, 6.8, and 7.9, respectively. The low pH of SMS appears to be due to the organic acid generated during the decomposition of the medium components of the mushroom mycelium, and the pH-increasing effect of CSMS was expected to be due to the reduction reaction according to the hydroxide ion among metabolites generated in the metabolic process of the immature microorganism. The optimal reaction conditions for the lignolytic enzyme used for decomposing the medium substrate of the mushroom mycelium are acidic conditions of pH 4 to pH 5, and it is known that acidification of the mushroom medium is significant with substrate decomposition biochemically in the medium.

EC reflects the salinity in the CSMS, and high salinity can adversely affect soil and plants. Elevation CSMS, roe deer CSMS, and osprey CSMS showed relatively low EC values of 1.48, 1.34, and 1.06 ds/m, respectively. When the EC value of the compost is 6 ds/m or less, the CSMS of the present invention satisfied the standard value in that it can be used as compost (Brady NC. 1990. The nature and properties of soils, New York: Macmillan Publishing company). In terms of organic matter content, 36.9% for LeCSMS, 53.6% for HeCSMS, and 53.5% for PoCSMS, meeting the organic content standard of compost. This decrease in the organic matter content of CSMS was expected as a result of organic matter decomposition by microbial activity during the fermentation process.

An important requirement of compost is the content of nitrogen (N), phosphorus (P) and potassium (K). The total nitrogen content of LeCSMS was 1.39%, lower than 1.94% of HeCSMS, but higher than 0.96% of PoCSMS. The phosphorus content was the highest in LeCSMS at 2.03%, and the potassium content was the highest in the HeCSMS of Hex roe beetle at 1.33%. The C/N ratio during composting conditions is an important factor for microbial activity. The C/N ratio suitable for microbial growth is 25-35. If it is lower than this, nitrogen is volatilized into ammonia gas, and if it is excessively higher than 50, nitrogen starvation occurs and the activity of microorganisms is limited. The C/N ratio of LeCSMS and HeCSMS was 15, according to Kim. Similar results were obtained with compost samples such as 2016 (Compost production using vegetable waste and spent oak mushroom substrate (SMS). J Mushrooms 14:237-243).

As a result of measuring the content of heavy metals (As, Cd, Hg, Pb, Cr, Cu, Ni, Zn) in LeCSMS, HeCSMS and PoCSMS, heavy metals were not detected in all SMS and CSMS, and even if detected, there was no problem below the standard value. appear. In addition, Ca and Mg contents were increased by more than 60% in the CSMS sample than in the SMS sample. That is, it was confirmed that various fertilizer components were increased in CSMS than SMS of shiitake, roe deer horseradish and oyster oyster.

As livestock manure including chicken manure is added during compost production, a severe odor is generated, and pesticides are detected in the compost as pesticides are treated in the livestock manure, causing problems in the utilization of organic agricultural materials. In the present invention, as a result of examining the pesticide components of commercially available organic compost, pesticide components such as Cypermethrin, Piperonyl and Butoxide were detected above the standard value, but the pesticide component was not detected in the CSMS of the present invention. didn't Therefore, the shiitake, roe deer beetle and oyster mushroom CSMS of the present invention are odor-free, eco-friendly organic compost, which is considered to be usefully utilized in urban veranda agriculture.

Example 3. Plant Growth Effect of Medium After Mushroom Harvesting

After 20 days of processing unripe shiitake SMS (LeCSMS) and post-harvesting shiitake medium (LeSMS) in the same amount in standard soil, the growth status of pepper seedlings was observed. As a result, pepper seedlings in the LeCSMS treatment group grew normally, but As the leaves turned yellow, physiological disturbance was caused, and it was found that immature ripening was an essential process for plant growth (FIG. 3).

In addition, as a result of measuring the plant height, leaf length, leaf width and number of leaves of red pepper seedlings, HeCSMS or Shiitake LeCSMS treatment group significantly increased plant height, leaf length, leaf width and number of leaves compared to the untreated control group. Plant height, leaf length, leaf width, and number of leaves were similar or increased compared to those treated with commercial topsoil (S company), confirming that the growth effect was excellent. On the other hand, in the PoCSMS-treated group, plant height, leaf width, side length and leaf number decreased compared to other treatments, confirming that growth was somewhat suppressed (Table 3). Through this, it was found that the immature product of the medium after harvesting all mushrooms does not have the effect of increasing the growth of the plant.

In addition, as a result of measuring the chloroplast content in the leaves of pepper seedlings, the total chloroplast content of the LeCSM treatment group was 77.2 mg/g, which was higher than that of the commercial compost (N company) treatment group 76.2 mg/g and the HeCSMS treatment group 75.4 mg/g. , 11.9 mg/g of untreated control group and 21.0 mg/g of PoCSMS treated group showed low chloroplast content (Table 4). Through this, it was expected that the most vigorous photosynthetic reaction would occur in LeCSMS.

That is, the matured Shiitake LeCSMS and HeCSMS of the present invention showed a very excellent effect on plant growth because the main components in the compost were physically and chemically converted to be suitable for compost, so it will be possible to use it as a useful compost resource. 4 is a result showing the plant growth status of pepper seedlings according to LeCSMS treatment in Table 3, and it can be observed that when LeCSMS is treated, the growth status is better than that of the untreated control group and the commercial compost (N company) treatment group.

In addition, as a result of inoculating pepper seedlings grown by treating LeCSMS or commercial compost (N company) and growing pepper seedlings ( Phytophthora capsici ) and examining the degree of disease occurrence 7 days later, the LeCSMS-treated group was better than the untreated control or commercial compost-treated group. The growth state was good ( FIG. 5 ), and it could be seen that LeCSMS had a control effect on pepper late blight.

Example 4. Preparation of granular pellets using medium (CSMS) after harvesting mature mushrooms

For the preparation of granular pellets using a medium (CSMS) after harvesting mature mushrooms, based on a total of 100% by weight, shiitake LeCSMS is added in an amount of 50% or more, and 20-50 It can be prepared according to the process diagram disclosed in FIG. 6A after adding and mixing in wt%.

Figure 7 is a result of observing the growth state of lettuce by treating lettuce seedlings with granular organic fertilizer (Figure 6B) prepared through the process of Figure 6 by mixing the same amount of Shiitake LeCSMS and roe deer CSMS, granular of the present invention After adding about 10% of organic fertilizer (CSMS) to the top soil and mixing it, it was put into a pot with a diameter of 9 cm. was observed.

As a result, it was confirmed that the granular organic fertilizer treatment group of the present invention significantly increased the growth of lettuce compared to the untreated control group, and showed a somewhat higher growth effect than the commercial compost treatment group.

Claims (6)

A method for producing an organic fertilizer having plant disease control activity, comprising the step of ripening a mushroom substrate after harvesting. According to claim 1, wherein the mushroom is Shiitake ( Lentinula edodes ) and Hericium erinaceum ( Hericium erinaceum ) Method for producing an organic fertilizer having plant disease control activity, characterized in that at least one. According to claim 1, wherein the plant disease is Phytophthora capsici ( Phytophthora capsici ), Alternaria solani ( Alternaria solani ), Botrytis cinerea ( Botrytis cinerea ), Corynespora cassiicola ) , Fusarium oxysporum ), Rhizoctonia solani ( Rhizoctonia solani ) and Sclerotinia sclerotiorum ) Plant characterized in that it is caused by one or more pathogens selected from the group consisting of A method for producing an organic fertilizer having disease control activity. The method of claim 1,
(1) obtaining a medium after mushroom harvest;
(2) adjusting the moisture content of the powder to a level of 60 to 65% (v/w) after grinding the medium after harvesting the mushrooms obtained in step (1);
(3) After harvesting the mushrooms whose moisture content is controlled in step (2), the powder of the medium is put in a ripening reaction tank and aged at 25-25° C. for 25-35 days; and
(4) drying the medium after harvesting the ripened mushrooms in step (3); An organic fertilizer having plant disease control activity produced by the method of any one of claims 1 to 4. [Claim 6] The organic fertilizer having plant disease control activity according to claim 5, wherein the organic fertilizer is prepared in the form of liquid, powder, pellets or granules.

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