KR20030095006A - Extracts of cinnamon trees' cortex for protecting crops from harmful diseases induced by plant pathogenic organism - Google Patents

Abstract

PURPOSE: Provided is a new type pesticide comprising a Cinnamomi Cortex extract which has the same or similar controlling effect as or to chemicals without causing the problems, such as drug-resistant bacteria or environmental pollution and is used for the protection of crops from disease by a plant pathogen. CONSTITUTION: A Cinnamomi Cortex extract, a suitable solvent and/or a surfactant are used for the protection of crops from disease by a plant pathogen such as a pathogenic fungus. The pathogenic fungus is selected from the group consisting of Magnaporthe grecia, Botrytis cinerea, Sphaerotheca fuligenea and Rhizoctonia solani. The disease is mildew, gray mold, leaf blight, bud rot, crown rot, stem rot or root rot disease. The solvent is a mixture of Kocosol-100 and cyclohexanone and the surfactant is HY-300.

Description

Cinnamon Bark Extract for Protection of Crop from Plant Pathogens {EXTRACTS OF CINNAMON TREES 'CORTEX FOR PROTECTING CROPS FROM HARMFUL DISEASES INDUCED BY PLANT PATHOGENIC ORGANISM}

Vegetables (cucumbers, peppers, carrots, cabbages, lettuce, eggplants, bell peppers, tomatoes, onions, cabbage, spinach, etc.), fruit trees (strawberries, melons, watermelons, grapes, apples, etc.), flowers (roses, tulips, etc.), rice, etc. In the cultivation of crops, the development of methods to effectively protect crops from diseases caused by numerous plant pathogens (especially fungal diseases) is currently the most urgent problem.

Typical examples of the above-mentioned diseases include powdery mildew, rice blasting disease, gray mold, leafy blight, and the like, but are not limited thereto. The following briefly describes the four representative fungal diseases described above.

Powdery mildew, It is a disease caused by Sphaerotheca fuligenea and the like, and is mainly a disease that occurs on leaves, peduncles, buds, and flowers. In the early stages of the onset, condensation spores in the shape of powder appear sparsely, but as the disease progresses, they appear dense in front and appear as white powder. Infected leaves are twisted and dried, and the petals turn light brown and greyish white. In general, the temperature of about 15 ℃, the high humidity at night and low humidity during the day, many cases. Methods of spraying chemicals such as saprol emulsion, geopan hydration, tidipon hydration and fena hydration are widely used. Korean plant disease pest weed persimmon, Korea Plant Protection Society (1986)}.

Rice blast is a disease caused by Magnaporthe grecia, which is a very serious disease that accounts for about 40% of the rice disease. Leaves, leaf tongue, node, ear tree, ear branch, rice seed, and the like, the symptoms are different depending on the site or time of occurrence. In severe cases of seedlings, the seedlings do not grow well, and the whole leaves turn brown to dry. In the earwood, dark brown pattern is formed at the branching point of the ear branch, and when it grows larger and surrounds the earwood, the ear becomes white and grows. In severe cases, more than one-third to one-half of the ear will be ill and the grains will be unsatisfactory. When there is frequent rain, lack of sunshine, cold and humid weather, strong wind blowing, low soil temperature (20 ℃), low soil moisture content, overdose of nitrogen manure, In many cases, when the rice transplanting time is late, mainly onset. Commonly used as control chemicals include labside, buraes, hinanosan, kitazine, fuchiwa, beam, etc. {Reference: Gyeonggi-do Agricultural Research and Development Institute (www.nongup.gyeonggi.kr)}.

Leaf blight is a disease caused by Rhizoctonia solani. In Korea, it occurs in early summer and is known to peak at high temperature and high humidity in early August to early September. The damage caused by leaf blight is about 22% of the rice damage rate, and about 87% of the water planting area. For the control, methods using chemical agents such as pencicuron, hexaconazole, and prutonyl are mainly used {reference: Gyeonggi-do Agricultural Research and Extension Services (www.nongup.gyeonggi.kr)}.

Ash fungus is a disease caused by Botrytis cinerea, which mainly infects flowers and petals and turns brown. In particular, it occurs on the petals attached to the fruit after the inflorescence and causes a wound on the young fruit, and the mature fruit is wound or directly invaded and infected. In the case of storage fruit infections, dark brown needle lesions appear at first, and then ash mold on the front of the fruit. It is mainly caused by plant cultivation, and occurs when humidity is high in a closed facility to protect night temperature between November and March when the outside temperature is low. In case of planting wheat, if the plant is painted and grows lush, the ventilation is bad and the disease occurs well. It occurs well in high humidity environment around 20 ℃. The pathogen is airborne by countless gray mold spores from the affected area. Therefore, the proliferation of infectious agents is very strong, and if conditions are met, they are spread to whole packaging in a short time. To control this, chemical agents such as dietofencarb and gabenda hydrous are mainly used, with measures to prevent outbreaks during cultivation such as ventilation and drainage. It is preferable to spray the drug prophylactically. In order to prevent the emergence of resistant bacteria during the spraying of the drug, spraying a mixture of different functionalities or using a mixed spray has a high control effect. {Reference: 國 國 平. 1982. 新版 野菜 の 病 害蟲-診斷 と 防除-.全國 農村 敎 育 協會 pp. 651;農 文 協 編. 1987. 原色 野菜 病 害蟲 百科.農 山 漁村 文化 協會 pp. 485}.

As such, in the case of a chemical agent that is mainly used to control diseases on crops such as vegetables, fruit trees, flowers, rice, and the like, a lot of problems such as the risk of developing resistant bacteria to chemicals and environmental pollution have been pointed out. Therefore, there is a great demand for a method that can effectively control a pest without causing such a problem, particularly a method using a biopharmaceutical.

On the other hand, the cinnamon tree is a evergreen tree, which is mainly cultivated in warm regions such as southern China (Guangdong, Guangxi, Fujian, Yunnan) and Vietnam. Extracts of bark from the broiler tree include volatile substances such as cinnanamaldehyde, eugenol, and phellandrene, as well as tannins, plant mucilage, gum and sugar. Known to contain coumarin and the like.

In particular, Cinnamic aldehyde, one of the main ingredients among the components of the bark extract of the Cinnamon Bark, is mainly used as a food additive that smells like beverages, ice cream, candy, gum, bread, and the like. This material is approved by the Food Additives.

In addition, the bark of broiler bark is used as a medicine for sweating, a medicine for lowering heat in herbal treatment, etc., and when it is insufficient in blood donation, when the stomach hurts due to cold energy, dizziness or nervous breakdown. In addition, the effect as a free radical scavenger of broiler bark (Japanese Patent Laid-Open No. 4-5237), a whitening effect in cosmetics (Japanese Patent Laid-Open No. 7-277944, Japanese Patent Laid-Open No. 4-342519), and a tannin effect (Japanese Laid Open Patent No. 60-64983) Already known.

However, as in the present invention, it is not known to use broiler bark extract as a pesticide for protecting crops from diseases caused by plant pathogens.

An object of the present invention is a new type, which can be used to protect crops from diseases caused by plant pathogens, and has the same or similar control effects as chemical agents without problems such as the risk of developing resistant bacteria and environmental pollution. The drug is to provide.

Preferably, it is an object of the present invention to provide biopesticides derived from plant components which can be used to protect crops from diseases caused by plant pathogens (especially phytopathogenic fungi).

1 is a photograph showing the effect of the bark extract of the present invention on the growth of Magnaporthe grecia and Botrytis cinerea mycelia in culture medium. In the figure, the upper left is the buttercup extract treatment, the upper right is the nutmeg extract treatment, the lower left is the broiler bark extract treatment, the lower right is the untreated { On the top right and bottom on the Botrytis cinerea}.

2 and 3 are photographs showing the effect of the bark extract of the present invention on the growth of Sphaerotheca fuligenea and Rhizoctonia solani mycelia in culture medium, respectively. It is also. In Figure 2, the upper left is the buttercup extract treatment, the upper right is the broiler bark extract treatment, the lower end is untreated. In Figure 3, the left side is the broiler bark extract treatment, the right side is untreated.

Figure 4 is a photograph showing the control effect of the bark bark extract on the rice blast caused by Magnaporthe grecia (magnaporthe grecia).

Figure 5 is a photograph showing the control effect of the bark extract of the bark against cucumber ash gray mold caused by Botrytis cinerea (Botrytis cinerea).

Figure 6 is a photograph showing the control effect of the bark extract of the bark against rice leaf blight caused by Rhizoctonia solani (Rhizoctonia solani).

FIG. 7 is a photograph showing the control effect of the bark extracts of cucumber on powdery mildew caused by Sphaerotheca fuligenea.

The present invention relates to bark extracts used in protecting crops from diseases caused by plant pathogens.

Preferably, the present invention relates to a bark extract of broiler tree, which is used to protect crops from diseases caused by phytopathogenic fungi.

More preferably, the present invention is a crop from a disease caused by phytopathogenic fungi belonging to the genus Magnaporthe, Botrytis, Spaerotheca or Rhizoctonia. Cinnamon bark extract, which is used to protect it.

Phytopathogenic fungi in which the bark extract of the present invention exhibits control effect is preferably Magnaporthe grecia, Botrytis cinerea, Spaerotheca fuligenea. ) Or Rhizoctonia solani, but is not limited thereto.

Diseases exhibiting control effect of bark extract of the present invention, particularly powdery mildew, ash fungus, rice fever, leaf blight blight, wearing bottle, snow blight, leaf blight, tube rot, stem rot or stump, etc. It is not limited.

In addition, the present invention comprises an effective amount of broiler bark extract and a suitable solvent and / or surfactant for use in protecting crops from diseases caused by plant pathogens (in particular, diseases caused by phytopathogenic fungi). It relates to a composition. Solvents and / or surfactants that may be used in the present invention include all suitable solvents and / or surfactants that may be added to enhance the diffusivity / control efficacy / safety of the bark extract.

In the case of the solvent used in the composition of the present invention described above, a suitable solvent may be selected and used depending on the type of the final formulation (for example, emulsion, liquid, liquid hydrating agent, etc.), characteristics and condition of the active ingredient. Selection of such a suitable solvent will be apparent to those skilled in the art. The solvent may be a nonpolar solvent, a polar solvent, or a nonpolar / polar mixed solvent. Suitable nonpolar solvents include, but are not limited to, Kocosol-based solvents (naphthapetroleum), methyl naphthalene, and the like. Suitable polar solvents include, but are not limited to, cyclohexanone, N-methylpyrrolidone (NMP), glycol derivatives, and the like. For example, when the formulation of the composition of the present invention is an emulsion, suitable solvents typically used in the preparation of emulsions may be used. As the solvent for the emulsion, a mixed solvent of Cocosol-100 (SK Chemical, South Korea) / cyclohexanone (Daejeong Chemical, South Korea) is preferable, but is not limited thereto.

In the case of the surfactant used in the composition of the present invention, the type of final formulation (e.g., liquid, emulsion, liquid hydrating agent, etc.), the state of the active ingredient, the type and characteristics of the solvent used (e.g., with or without polarity) A suitable surfactant can be selected and used according to the etc. Selection of such suitable surfactants will be apparent to those skilled in the art. For example, when the formulation of the composition of the present invention is an emulsion, suitable surfactants commonly used in the preparation of emulsions may be used. Preferred examples of the emulsion for emulsion, HY-300 (Hanong Chemical, South Korea), but is not limited thereto.

As used herein, the term "disease caused by plant pathogens" refers to a disease caused by all pathogens such as fungi and bacteria on the plant, which can obtain a control effect using the bark extract of the bark of the present invention. .

In addition, the term "phytopathogenic fungi" herein means fungi causing disease in plants, which can obtain a control effect using the bark extract of the bark of the present invention.

As used herein, the term "crop" refers to all crops that can be obtained using the broiler bark extract of the present invention, vegetables (cucumbers, peppers, carrots, cabbage, lettuce, eggplant, bell peppers, tomatoes, Onions, cabbage, spinach, etc.), fruit trees (strawberries, melons, watermelons, grapes, apples, etc.), flowers (roses, tulips, etc.), rice and the like are all widely used.

Cinnamon bark extract provided by the present invention can be used to protect crops from various diseases caused by plant pathogens (especially phytopathogenic fungi), and problems such as the risk of resistant bacteria and environmental pollution of chemical agents It does not have the same or similar control effect as chemicals.

In particular, the bark extract provided by the present invention is effective in protecting crops from various diseases caused by phytopathogenic fungi.

In the following examples, according to the present invention, the results of the analysis of the results of administration of the bark extract of the phytopathogenic fungi and the plant caused by it shows the results. However, broiler bark extract in the present invention should not be understood to exert an effect limited to the phytopathogenic fungi specified in the following examples.

Example

1. Material

(1) Cinnamon Bark Extract

Cinnamon bark extract used in this example is an essential oil obtained by steam-extracting the inner skin of Cinnamomum zeylanicum. It was purchased from (available from Robertet, France).

(2) phytopathogenic fungi

In this example, four phytopathogenic fungi, namely Magnaporthe grecia, Botrytis cinerea, Sphaerotheca fuligenea and Rhizoctonia solani).

The four fungi mentioned above were obtained from the Gene Bank of Korea Center for Biotechnology.

2. In vitro testing

This in-flight test is a test to determine the effect on the growth of the phytopathogenic fungal mycelium in the culture medium when the broiler bark extract of the present invention is treated.

To each of the three PDA (Potato Dextrose Agar) media, the broiler tree extract essential oil diluted 1: 100 with 50% acetone and 50% ethanol and two control plant extracts (parsley extract and nutmeg extract) were added, respectively. The four fungal flora described above was inoculated into the medium and incubated at room temperature for 3 to 5 days, and then the mycelial growth rate of the following formulas was examined:

* Mycelial growth rate (%) = × 100

Table 1 below shows the control effect of each extract based on the mycelial growth rate of the above formula.

extract Treatment concentration of fungi and extracts (ppm) Magna Forte Grecia Botrytis B.cinerea R. solani S. erotici pulligenea 500 250 500 250 500 250 500 250 Cinnamon Extract + + + ± + + + + Buttercup extract ± - ± - ± - ± - Nutmeg Extract ± - ± - ± - ± -

{Wherein + is effective-at least 80% control effect; ± is moderate effective—control effect 50% to less than 80%; -No effect-less than 50% control effect}

The results can also be confirmed through FIGS.

3. In vivo test

(1) Rice blast caused by Magnaporthe grecia

end. Host Plant Preparation

Nakdong varieties of rice were selected as host plants, and water-based subcontracted soil was used as soil. After two days of sowing rice seedlings 3 (rib / pot) in a triangular shape about 45 ° angle and about 5 mm depth, water was sprayed to the extent that no seeds are visible. Then, the rice seedlings were filled with rice paddy and seedlings were grown for about three weeks. During this seedling period, yuan fertilizer (purchased from Namhae Chemical) was diluted 1,000 times and irrigated twice, so that rice was soft and induced to occur easily.

I. Vaccine preparation

First, a PDA medium for subculture, a PDB (Potato Dextrose Broth) medium for transplant preparation, and a rice bran medium for spore formation consisting of rice bran: agar: dextrose: water of 10: 6: 5: 500 were prepared, respectively.

About 10 passage-containing bacterium-agar discs were cultured per 100 ml of PDB and shaken for 7 days at about 27 ° C. until the filtrate and the flask became black.

The transplant preparation strain thus obtained was placed in a sterile container and homogenized to be used for sporulation. Two 100 ml-flasks were used and the strains were homogenized in 15 ml upper layer + 15 ml lower layer / 500 ml of rice bran medium.

The prepared strains were cultured in the dark at about 27 ° C. for 8 days, and stressed the grown mycelia to induce sporulation under fluorescent lamps. Sterile water was added to the spore-forming petri-dish in a lump form, and then spores were collected by scraping with a brush. The collected spores were filtered with three layers of gauze and inoculated into the prepared rice as follows.

All. Induction

Magnaporthe grecia strains prepared as described above were spray inoculated into rice (100 ml per 24pot-tray), and then left for 4 days in a dark room at about 25 ° C. and a relative humidity of about 100% to induce the onset. .

la. Pharmaceutical preparation

Cinnamon bark extract essential oil (500 ppm) diluted 1: 100 with 50% acetone and 50% ethanol was used. In order to contrast with the effect of the bark extract of the present invention, 100 ppm of Ferrimzone + Tricyclazole 40% hydrate (trade name: Nonbra) was used.

Prior to drug treatment, 250 ppm of Tween-20 was sprayed and dried. Then, the prepared rice was collected in one tray, and then each drug was treated simultaneously using a sprayer (30 ml per 12 pot-tray).

In order to obtain the average value of the pest control effect of the above-mentioned drugs, the above-described drug treatment process was repeated three times.

hemp. Drug investigation

After investigating the "degree of incidence" expressed in percent of lesion area when the total area of the second lobe was 100% from below, the "control value" of the following equation was obtained:

* Control price = × 100

The incidence and control values in this test are as shown in Table 2 below.

Treatment pharmaceutical Incidence (%) ¹ Control price (%) Cinnamon Bark Extract 500ppm 0.0 100 Nonbra 40% Hydrating 100ppm 0.0 100 No treatment 60.0 -

{In the above, the incidence (%) ¹ is the average value of three repeated test results}

The result can also be confirmed through the photographic diagram of FIG. 4.

(2) Cucumber gray mold caused by Botrytis cinerea

end. Host Plant Preparation

House white tea was selected as the host plant, and a soil mixed with horticulture subconcentration and vermiculite in a 3: 1 ratio was used for breathability and increase. The seedlings were planted in 1 (lip / pot) and rearranged into 4 rows x 7 rows in rice transplanters to prevent white teats from becoming soft. The seedlings were then seeded during the period of development of the two lobes (about 3 weeks). During this seedling period, yuan fertilizer (purchased from Namhae Chemical) was diluted to 0.5% and irrigated three times, causing the swelling to become weak, leading to easy onset.

I. Vaccine preparation

Botrytis cinerea strain was added to PDA medium, and cultured for about 10 days at about 20 ° C. and in a dark state, and further cultured at about 20 ° C. and a light cancer for 5 days to form spores. After adding a 6 g / 250 ml PDB solution to a Petri dish with a large amount of spores, spores were collected by a brush. The collected spores were filtered with three layers of gauze, and then inoculated onto a white tea prepared as follows.

All. Induction

After spraying the Botrytis cinerea strain on the white tea tree (100ml per 24pot tray), and incubating for 3 days in a dark room at about 20 ° C. and a relative humidity of about 100% to induce the onset It was.

la. Pharmaceutical preparation

Cinnamon bark extract essential oil (500 ppm) diluted 1: 100 with 50% acetone and 50% ethanol was used. In order to contrast with the effect of the bark extract of the present invention, 200 ppm of Kresoxym-methyl 47% granulating agent was used.

The prepared white teas were collected in one tray, and then each drug was treated simultaneously using a sprayer (30 ml per 12 pot tray).

In order to obtain the average value of the pest control effect of the above-mentioned drugs, the above-described drug treatment process was repeated three times.

hemp. Drug investigation

After examining the "degree of incidence" expressed as a percentage of the lesion area when the whole cucumber leaf was 100%, the "control value" of the following equation was obtained:

* Control price = × 100

The incidence and control values in this test are as shown in Table 3 below.

Treatment pharmaceutical Incidence (%) ¹ Control price (%) Cinnamon Bark Extract 500ppm 6.7 85.7 Cresoxime Methyl 47% Granular Water Wetting Agent 200ppm 0.0 100 No treatment 46.7 -

{In the above, the incidence (%) ¹ is the average value of three repeated test results}

The results can also be confirmed through the photographic diagram of FIG. 5.

(3) Rice leaf blight caused by Rhizoctonia solani

end. Host Plant Preparation

Nakdong varieties of rice were selected as host plants, and water-based subcontracted soil was used as soil. After two days of sowing rice seedlings 3 (rib / pot) in a triangular shape about 45 ° angle and about 5 mm depth, water was sprayed to the extent that no seeds are visible. Then, the rice seedlings were filled with rice paddy and seedlings were grown for about three weeks. During this seedling period, yuan fertilizer (purchased from Namhae Chemical) was diluted 1,000 times and irrigated twice, so that rice was soft and induced to occur easily.

I. Vaccine preparation

PDA medium for passage, 2: 1: 1 bran medium for bran: rice bran: water inoculation was sterilized, then cooled and resterilized twice.

At about 27 ° C., 10 bacterium-agar disks were added to the cultured PDA medium in the dark and cultured. In a cultured Erlenmeyer flask, about 1 L of 100 ppm streptomycin solution was added and homogenized.

All. Induction

The rice was inoculated by irrigation with about 5 ml of the prepared Rhizoctonia solani-containing solution, followed by incubation for 5 days in a dark room at about 27 ° C. and a relative humidity of about 100%.

la. Pharmaceutical preparation

500 ppm of Cinnamon bark extract essential oil diluted 1: 100 with 50% acetone and 50% ethanol was used. In order to contrast with the effect of the bark extract of the present invention, 200 ppm of Azoxystrobin 10% hydrating agent was used.

Prior to drug treatment, 250 ppm of Tween-20 was sprayed and dried. Then, the prepared rice was collected in one tray, and then each drug was treated simultaneously using a sprayer (30 ml per 12 pot-tray).

In order to obtain the average value of the pest control effect of the above-mentioned drugs, the above-described drug treatment process was repeated three times.

hemp. Drug investigation

Investigating the "degree of incidence" in% of the progress of mycelial up to 100% of the leaflets, the "control value" of the following equation was obtained:

* Control price = × 100

The incidence and control values in this test are as described in Table 4 below.

Treatment pharmaceutical Incidence (%) ¹ Control price (%) Cinnamon Bark Extract 500ppm 5.0 93.8 Azoxistrobin 10% Hydration 200ppm 0.0 100 No treatment 80.0 -

{In the above, the incidence (%) ¹ is the average value of three repeated test results}

The results can also be confirmed through the photographic diagram of FIG. 6.

(4) Cucumber powdery mildew caused by Sphaerotheca fuligenea

end. Host Plant Preparation

House white tea was selected as the host plant, and a soil mixed with horticulture subconcentration and vermiculite in a 3: 1 ratio was used for breathability and increase. The seedlings were planted in 1 (lip / pot) and rearranged into 4 rows x 7 rows in rice transplanters to prevent white teats from becoming soft. Then, seedlings were seeded during the period of development (about 3 weeks) of the two main leaves. During this seedling period, yuan fertilizer (purchased from Namhae Chemical) was diluted to 0.5% and irrigated three times, causing the swelling to become weak, leading to easy onset.

I. Vaccine preparation

The powdery mildew occurred and the spore-rich spores were cultured at about 20 ° C. in a light state to prepare spores for use in this test.

All. Induction

Sparotheca fuligenea strain spores prepared as described above were shaken and inoculated on a white tea, and then left for about 7 days in a dark room at about 20 ° C. and a relative humidity of about 50% to induce the onset.

la. Pharmaceutical preparation

Cinnamon bark extract essential oil (500 ppm) diluted 1: 100 with 50% acetone and 50% ethanol was used. In order to contrast with the effect of the bark extract of the present invention, 50 ppm of Noarimol 6% emulsion was used.

The prepared white teas were collected in one tray, and then each drug was treated simultaneously using a sprayer (30 ml per 12 pot tray).

In order to obtain the average value of the pest control effect of the above-mentioned drugs, the above-described drug treatment process was repeated three times.

hemp. Drug investigation

After examining the "degree of incidence" expressed as a percentage of the lesion area when the whole cucumber leaf was 100%, the "control value" of the following equation was obtained:

* Control price = × 100

The incidence and control value in this test are as described in Table 5 below.

Treatment pharmaceutical Incidence (%) ¹ Control price (%) Cinnamon Bark Extract 500ppm 6.7 91.3 Noirmol 6% Emulsion 50 ppm 0.0 100 No treatment 76.7 -

{In the above, the incidence (%) ¹ is the average value of three repeated test results}

The result can also be confirmed through the photographic diagram of FIG. 7.

4. Formulation

(1) Preparation Example 1

After putting 50 ml of bark extract essential oil at room temperature into a manufacturing container, 32 ml of Cocosol-100 was added and stirred for 1 minute, and then 10 ml of cyclohexanone was added and stirred for 1 minute. Then, 8 ml of HY-300H (HY-300, a hydrophilic surfactant having a high HLB value) as a surfactant was added and stirred for 5 minutes to obtain a final 100 ml of the composition.

(2) Preparation Example 2

After putting 40 ml of bark extract essential oil at room temperature into a manufacturing container, 40 ml of Cocosol-100 was added and stirred for 1 minute, and then 10 ml of cyclohexanone was added and stirred for 1 minute. Then, 10 ml of the HY-300H (hydrophilic surfactant having a high HLB value in the HY-300) as a surfactant was added and stirred for 5 minutes to obtain a final 100 ml of the composition.

Claims (7)

Cinnamon bark extract, used to protect crops from diseases caused by plant pathogens. Cinnamon bark extract according to claim 1, wherein the plant pathogen is phytopathogenic fungi. The method according to claim 2, wherein the phytopathogenic fungi are Cinnamon bark extract, characterized in that it is a phytopathogenic fungus selected from the group consisting of Magnaporthe, Botrytis, Spaerotheca and Rhizoctonia. The method according to claim 3, wherein the phytopathogenic fungi are Phytopathogenic fungi selected from the group consisting of Magnaporthe grecia, Botrytis cinerea, Spaerotheca fuligenea and Rhizoctonia solani Cinnamon Bark Extract. The disease according to any one of claims 1 to 4, wherein Cinnamon bark extract, characterized in that it is powdery mildew, gray mold, rice fever, leaf blight, wearing disease, snow blight, leaf blight, tube rot, stem rot, or rot. A composition comprising an effective amount of a broiler bark extract according to claim 1 or 2, and a suitable solvent and / or surfactant. The method of claim 6, wherein the solvent is a combination of cocosol-100 and cyclohexanone; Composition wherein the surfactant is HY-300.