Bactericide composition for preventing and treating pecan root rot and application thereof

Abstract

The invention relates to the technical field of pecan prevention and treatment, in particular to a bactericide composition for preventing and treating pecan root rot and application of the bactericide composition. According to the technical scheme, the bactericide composition comprises a component A, a component B and a component C in percentage by weight, the bactericide composition of the component A is suitable for treating slight or preventive root rot, the bactericide composition of the component B is suitable for treating medium-degree root rot, and the bactericide composition of the component C is suitable for treating severe or refractory root rot. According to the severity of the illness state, corresponding bactericide components are selected for root irrigation treatment. According to the bactericide composition disclosed by the invention, through specific proportioning and component selection, the survival and reproduction of pathogenic bacteria can be reduced aiming at the pathogenic bacteria of the pecan root rot, so that the occurrence and spreading of diseases are controlled.

Description

Technical Field

[0001] The invention relates to the technical field of pecan prevention and control, and in particular to a fungicide composition for preventing and controlling pecan root rot and application thereof. Background Art

[0002] As a precious woody oil crop, pecan fruit has high economic value and good nutritional value. However, pecan is susceptible to a variety of diseases and pests during its growth, among which root rot is a serious soil-borne disease that poses a great threat to the growth and yield of pecan.

[0003] Root rot is mainly caused by fungi, such as Fusarium, Phytophthora and Pythium, which can infect the roots of pecans, causing root tissue necrosis and hindering the plant's absorption of water and nutrients, which ultimately manifests as slow plant growth, yellowing and falling leaves, and even death. At present, the main prevention and control methods for pecan root rot include chemical prevention.

[0004] Chemical control is a widely used and rapid method. However, traditional chemical control methods mainly include chemical pesticides, which are environmentally unfriendly, have long residual times, and are harmful to non-target organisms. Some chemical pesticides have potential hazards to human health. Chlorine dioxide is considered relatively safe when used at recommended concentrations, and ethylene phosphate aluminum is relatively less toxic. Traditional chemical agents may act slowly or lack durability, while chlorine dioxide can quickly kill pathogens, and ethylene phosphate aluminum can provide a certain degree of lasting protection.

[0005] To this end, we propose a fungicide composition for preventing and controlling pecan root rot and its application to solve the existing problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems existing in the background technology and to provide a fungicide composition for preventing and treating pecan root rot and its application.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a fungicide composition for preventing and controlling pecan root rot, the fungicide composition is composed of a chlorine dioxide solution and a bidirectional conductive ethylene aluminum fungicide, the fungicide composition comprises the following components by weight percentage: component A: 300 mg / L chlorine dioxide solution and 2 grams of ethylene aluminum fungicide / liter of water, component B: 600 mg / L chlorine dioxide solution and 4 grams of ethylene aluminum fungicide / liter of water, component C: 900 mg / L chlorine dioxide solution and 6 grams of ethylene aluminum fungicide / liter of water, the fungicide composition of component A is suitable for mild or preventive root rot treatment, the fungicide composition of component B is suitable for moderate root rot treatment, and the fungicide composition of component C is suitable for severe or refractory root rot.

[0008] Furthermore, fosetyl aluminum (also known as triethyl aluminum phosphate or thiophanate-methyl) is an organophosphorus systemic fungicide, which is characterized by being able to conduct both upward and downward bidirectionally in the plant body at the same time. Fosetyl aluminum has good prevention and control effects on phytophthora and downy mildew, and is suitable for a variety of economic crops, such as fruit trees, vegetables, flowers, cotton, tobacco, rubber, etc. It can be absorbed through the stems and leaves of the plants and conducted up and down in the plant body, which has both protective and therapeutic effects.

[0009] The invention discloses an application of a fungicide composition for preventing and treating walnut root rot, wherein the corresponding fungicide components are selected according to the severity of the disease to carry out root irrigation treatment.

[0010] Preferably, the chlorine dioxide solution comprises chlorine dioxide, purified water and an auxiliary agent, wherein the auxiliary agent comprises a stabilizer and a dispersant, wherein the stabilizer is organic citric acid, and the dispersant is a nonionic surfactant such as polyoxyethylene sorbitan fatty acid ester.

[0011] Preferably, the ratio of the fungicide composition of component A is as follows: dissolving 300 mg of chlorine dioxide gas in 1 liter of pure water, adding 1.5 grams of citric acid to 1 liter of water, adding 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and adding 2 grams of ethyl phosphate aluminum fungicide to 1 liter of water; the ratio of the fungicide composition of component B is as follows: dissolving 600 mg of chlorine dioxide gas in 1 liter of pure water, adding 1.5 grams of citric acid to 1 liter of water, adding 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and adding 4 grams of ethyl phosphate aluminum fungicide to 1 liter of water; the ratio of the fungicide composition of component C is as follows: dissolving 900 mg of chlorine dioxide gas in 1 liter of pure water, adding 1.5 grams of citric acid to 1 liter of water, adding 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and adding 6 grams of ethyl phosphate aluminum fungicide to 1 liter of water.

[0012] Preferably, the preparation process of the chlorine dioxide solution includes preparing raw materials, preparing chlorine dioxide solution, mixing, sterilization and quality control, the preparation of raw materials includes weighing pure water, stabilizer and dispersant using a precision balance, the preparation of chlorine dioxide solution includes dissolving chlorine dioxide gas in a certain amount of pure water through a high-pressure gas dissolving device, the mixing includes adding a certain amount of stabilizer and dispersant to the prepared chlorine dioxide solution, and stirring fully with a stirrer until completely dissolved, the sterilization includes sterilizing the solution using an ultraviolet lamp or a filtration system to remove possible microorganisms, and the quality control includes sampling and testing the chlorine dioxide concentration to ensure that it meets the predetermined standard.

[0013] Preferably, in the above process, the mass of chlorine dioxide gas dissolved into pure water is controlled to produce chlorine dioxide solutions of different components.

[0014] Preferably, the steps of determining the severity of the disease include on-site inspection, symptom identification, disease grading, plant-by-plant evaluation, formulation of treatment plans, recording and reporting. Through the above detailed steps, the severity of pecan root rot can be more accurately determined, and reasonable prevention and control measures can be formulated accordingly.

[0015] Preferably, the root irrigation treatment includes preparing a root irrigation syringe, calculating the dosage, locating the root irrigation point, drilling holes, injecting the medicine, and sealing the holes. According to the improvement of the condition, it is decided whether subsequent root irrigation treatment or other prevention and control measures are needed. When irrigating the roots, avoid direct contact of the agent with the tree trunk and leaves to avoid drug damage. Ensure that it is carried out in windless or low wind weather to avoid the agent from drifting. Considering environmental protection, avoid the agent from flowing into water bodies or non-target areas. Through the above steps, root irrigation treatment can be effectively carried out to prevent and control plant root diseases.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The fungicide composition for preventing and controlling pecan root rot of the present invention and its application have significant prevention and control effects during use: the fungicide composition of the present invention can effectively target the pathogens of pecan root rot through specific ratios and component selection, significantly reduce the survival and reproduction of the pathogens, and thus effectively control the occurrence and spread of the disease;

[0018] Enhance plant resistance: After applying the fungicide composition of the present invention, the root health of the pecan plant is improved, the plant's resistance to pathogens is enhanced, and the possibility of future disease is reduced;

[0019] Reduce the recurrence rate of diseases: Through the root irrigation treatment method of the present invention, the fungicide can directly reach the site where the disease occurs, effectively reducing the survival rate of pathogens in the soil, thereby reducing the recurrence rate of the disease;

[0020] Environmentally friendly: The fungicide composition of the present invention uses ingredients with less impact on the environment, reduces the amount of chemical pesticides used, reduces the risk of soil and water pollution, and is beneficial to the protection of the ecological environment;

[0021] Simplicity of operation: The application method of the present invention is simple and easy to operate, does not require complicated equipment and professional techniques, and can be operated by ordinary growers, which is convenient for promotion and use;

[0022] Improved economic benefits: By effectively preventing and controlling pecan root rot, tree death and yield decline caused by the disease are reduced, thereby improving the yield and quality of pecans and increasing the economic income of growers;

[0023] Safety and sustainability: The fungicide composition and its application method of the present invention are relatively safe to humans and non-target organisms, meet the requirements of sustainable agricultural development, and are conducive to the long-term stability of agricultural production;

[0024] In summary, the fungicide composition and application method of the present invention have many advantages in preventing and controlling pecan root rot. They can not only effectively prevent and control diseases, but also promote the healthy development of the pecan industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] like Figure 1 As shown, the present invention proposes a fungicide composition for preventing and controlling pecan root rot and its application, including a fungicide composition composed of a chlorine dioxide solution and a bidirectional conductive ethylene aluminum fungicide, the fungicide composition comprising the following components by weight percentage: component A: 300 mg / L chlorine dioxide solution and 2 grams of ethylene aluminum fungicide / liter of water, component B: 600 mg / L chlorine dioxide solution and 4 grams of ethylene aluminum fungicide / liter of water, component C: 900 mg / L chlorine dioxide solution and 6 grams of ethylene aluminum fungicide / liter of water, the fungicide composition of component A is suitable for mild or preventive root rot treatment, the fungicide composition of component B is suitable for moderate root rot treatment, and the fungicide composition of component C is suitable for severe or difficult to treat root rot.

[0029] Embodiment 2

[0030] like Figure 1 As shown, a fungicide composition for preventing and controlling pecan root rot and its application proposed by the present invention, compared with embodiment 1, this embodiment also includes: the chlorine dioxide solution includes chlorine dioxide, purified water and auxiliary agents, the auxiliary agents include stabilizers and dispersants, the stabilizer is organic citric acid, which is used to maintain the stability of chlorine dioxide in aqueous solution, prevent its decomposition, and extend the shelf life of the product; the dispersant is a non-ionic surfactant such as polyoxyethylene sorbitan fatty acid ester, which helps chlorine dioxide to be evenly dispersed in the solution to ensure that it acts evenly on the roots of plants.

[0031] Embodiment 3

[0032] like Figure 1 As shown, the fungicide composition for preventing and controlling pecan root rot and its application proposed by the present invention, compared with Example 1, this embodiment also includes:

[0033] The proportion of the fungicide composition of component A is as follows: 300 mg of chlorine dioxide gas is dissolved in 1 liter of pure water, 1.5 grams of citric acid is added to 1 liter of water, 0.1 grams of polyoxyethylene sorbitan fatty acid ester is added to 1 liter of water, and 2 grams of ethyl phosphite fungicide is added to 1 liter of water;

[0034] The proportion of the fungicide composition of component B is as follows: 600 mg of chlorine dioxide gas is dissolved in 1 liter of pure water, 1.5 grams of citric acid is added to 1 liter of water, 0.1 grams of polyoxyethylene sorbitan fatty acid ester is added to 1 liter of water, and 4 grams of ethyl phosphite fungicide is added to 1 liter of water;

[0035] The proportion of the fungicide composition of component C is as follows: dissolve 900 mg of chlorine dioxide gas in 1 liter of pure water, add 1.5 grams of citric acid to 1 liter of water, add 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and add 6 grams of ethylene phosphite fungicide to 1 liter of water.

[0036] The preparation process of chlorine dioxide solution includes preparing raw materials, preparing chlorine dioxide solution, mixing, sterilization and quality control. The preparation of raw materials includes using a precision balance to weigh pure water, stabilizer and dispersant. The preparation of chlorine dioxide solution includes dissolving chlorine dioxide gas in a certain amount of pure water through a high-pressure gas dissolving device. Mixing includes adding a certain amount of stabilizer and dispersant to the prepared chlorine dioxide solution and stirring it thoroughly with a stirrer until it is completely dissolved.

[0037] During the use of the high-pressure gas dissolving device, ensure that all parts of the high-pressure gas dissolving device are intact, open the pure water inlet valve, adjust the water flow, start the high-pressure pump, let water enter the high-pressure gas dissolving device, open the chlorine dioxide cylinder valve, and pass the gas into the high-pressure gas dissolving device. By adjusting the cylinder outlet valve, the flow of chlorine dioxide gas is controlled. Under the action of the high-pressure pump, the chlorine dioxide gas is fully dissolved in the water to form a uniform chlorine dioxide solution.

[0038] Furthermore, the chlorine dioxide gas can be passed through a pretreatment device to remove impurities and moisture, the pretreated chlorine dioxide gas can be compressed to a certain pressure, and the chlorine dioxide gas can be fully mixed with water through a special homogenization device. Under the action of a high-pressure pump, the chlorine dioxide gas is dissolved in the water to form a stable solution.

[0039] In the above process, chlorine dioxide solutions of different components are produced by controlling the mass of chlorine dioxide gas dissolved into pure water.

[0040] Sterilization involves sterilizing the solution using ultraviolet light or filtration systems to remove any microorganisms that may be present, and quality control involves sampling and testing the chlorine dioxide concentration to ensure it meets predetermined standards.

[0041] Embodiment 4

[0042] like Figure 1 As shown, the fungicide composition for preventing and controlling pecan root rot and its application proposed by the present invention, compared with Example 1, this embodiment also includes:

[0043] Steps to determine the severity of the disease include an on-site inspection: visiting pecan growing areas, observing the overall growth of the trees, recording the location, age, and growing environment of the pecan trees, and observing the trees for the following root rot symptoms:

[0044] Check for discoloration, rot, or necrosis at the roots or on the trunk close to the ground.

[0045] Check whether the leaves are yellowing, wilting, or falling prematurely.

[0046] Whether the tree is growing slowly or has stopped growing.

[0047] Are the trees leaning or falling?

[0048] According to the severity of the disease symptoms, a disease classification standard is established, such as:

[0049] Mild: Less than 1 / 3 of the roots are affected, and some leaves turn yellow.

[0050] Moderate: 1 / 3 to 2 / 3 of the roots are affected, with most of the leaves turning yellow.

[0051] Severe: More than two-thirds of the roots are affected, all leaves are yellowing, and the tree shows signs of stagnation or death. Each pecan tree is evaluated, symptoms are recorded and compared to the grading scale to determine the disease level of each tree;

[0052] Then formulate a treatment plan based on the severity of the disease:

[0053] Mild disease: Use a lower concentration of fungicide component (component A) for treatment.

[0054] Moderate disease: Use a medium concentration of fungicide component (component B) for treatment.

[0055] Severe disease: Use a higher concentration of fungicide component (component C) for treatment, record the disease level and treatment plan of each tree, and prepare a disease report to provide reference for subsequent prevention and control work.

[0056] By following the steps of symptom identification, disease grading, tree-by-tree assessment, developing treatment plans, recording and reporting, the severity of pecan root rot can be more accurately determined and appropriate prevention and control measures can be developed accordingly.

[0057] After the plant's disease condition is determined, the root irrigation operation is as follows:

[0058] Root irrigation treatment includes preparing root irrigation syringes, finding suitable root irrigation points on the bottom surface around the trunk, usually below the edge of the crown, clearing weeds around the root irrigation points to facilitate subsequent drilling, and using drilling tools (such as shovels, hole punches, etc.) to drill holes at the root irrigation points. The depth and number of holes are determined according to the size of the tree and the severity of the disease. Insert the nozzle of the root irrigation device into the hole and slowly inject the agent to ensure that the agent is evenly distributed to the roots. The irrigation can be repeated at different locations. After the irrigation is completed, fill the hole with soil or other fillers and gently compact it. Through the above steps, root irrigation treatment can be effectively carried out to prevent and control plant root diseases.

[0059] Finally, based on the improvement of the disease, decide whether subsequent root irrigation or other prevention and control measures are needed. When irrigating the roots, avoid direct contact of the agent with the tree trunk and leaves to avoid drug damage. Make sure to do it in windless or low wind weather to avoid the agent from drifting. Consider environmental protection and avoid the agent from flowing into water bodies or non-target areas.

[0060] The specific implementation is as follows:

[0061] At the early stage of the disease, the plants were treated with component A (300 mg / L chlorine dioxide solution and 2 g ethylene aluminum fungicide / liter water) for root irrigation. The dosage for each tree was 5L. The fungicide solution was evenly poured into the soil around the roots of the trees. The treatment was repeated twice with an interval of 7 days.

[0062] For trees with more serious diseases, use component B (600 mg / L chlorine dioxide solution and 4 grams of ethylene aluminum fungicide / liter water) for treatment. The dosage for each tree is 10L. The fungicide solution is evenly poured into the soil around the tree roots. The treatment is repeated three times with an interval of 5 days.

[0063] For severely infected trees, use component C (900 mg / L chlorine dioxide solution and 6 g phosphoenol fungicide / L water) for treatment. The dosage for each tree is 15L. The fungicide solution is evenly poured into the soil around the tree roots. The treatment is repeated four times with an interval of 3 days.

[0064] The dosage of the above steps can be appropriately changed according to the size of the tree.

[0065] After each treatment, the symptom changes of the pecan trees were observed, and the improvement of root vitality and disease symptoms was recorded. After all treatments were completed, an evaluation was conducted. According to the evaluation results, subsequent management measures such as fertilization and irrigation were adjusted to promote the recovery and growth of the plants. After the treatment, it was observed that the root vitality of the pecan trees was significantly enhanced, the disease symptoms were significantly improved, and the plant growth returned to normal. At the same time, through the determination of soil physical and chemical properties and enzyme activity, the results showed that the health of the soil was significantly improved.

[0066] Through the above method, the fungicide composition can be effectively applied to prevent and control pecan root rot, ensuring the healthy growth of pecan trees.

[0067] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A fungicide composition for preventing and treating pecan root rot, characterized in that: The fungicide composition is composed of a chlorine dioxide solution and a bidirectionally conductive ethylene aluminum fungicide, and the fungicide composition includes the following components by weight percentage: component A: 300 mg / L chlorine dioxide solution and 2 grams of ethylene aluminum fungicide / liter of water, component B: 600 mg / L chlorine dioxide solution and 4 grams of ethylene aluminum fungicide / liter of water, component C: 900 mg / L chlorine dioxide solution and 6 grams of ethylene aluminum fungicide / liter of water, the component A fungicide composition is suitable for mild or preventive root rot treatment, the component B fungicide composition is suitable for moderate root rot treatment, and the component C fungicide composition is suitable for severe or difficult to treat root rot.

2. An application of a fungicide composition for preventing and treating pecan root rot, characterized in that: According to the severity of the disease, the corresponding fungicide component is selected for root irrigation treatment.

3. The fungicide composition for preventing and controlling pecan root rot and its use according to claim 1, characterized in that: The chlorine dioxide solution comprises chlorine dioxide, purified water and an auxiliary agent, wherein the auxiliary agent comprises a stabilizer and a dispersant, wherein the stabilizer is organic citric acid, and the dispersant is a nonionic surfactant such as polyoxyethylene sorbitan fatty acid ester.

4. The fungicide composition for preventing and controlling pecan root rot and its use according to claim 1, characterized in that: The ratio of the fungicide composition of component A is as follows: dissolving 300 mg of chlorine dioxide gas in 1 liter of pure water, adding 1.5 grams of citric acid to 1 liter of water, adding 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and adding 2 grams of ethyl phosphate aluminum fungicide to 1 liter of water; the ratio of the fungicide composition of component B is as follows: dissolving 600 mg of chlorine dioxide gas in 1 liter of pure water, adding 1.5 grams of citric acid to 1 liter of water, adding 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and adding 4 grams of ethyl phosphate aluminum fungicide to 1 liter of water; the ratio of the fungicide composition of component C is as follows: dissolving 900 mg of chlorine dioxide gas in 1 liter of pure water, adding 1.5 grams of citric acid to 1 liter of water, adding 0.1 grams of polyoxyethylene sorbitan fatty acid ester to 1 liter of water, and adding 6 grams of ethyl phosphate aluminum fungicide to 1 liter of water.

5. The fungicide composition for preventing and controlling pecan root rot and its use according to claim 3, characterized in that: The preparation process of the chlorine dioxide solution includes preparing raw materials, preparing chlorine dioxide solution, mixing, sterilizing and quality control. The preparation of raw materials includes weighing pure water, stabilizer and dispersant with a precision balance. The preparation of chlorine dioxide solution includes dissolving chlorine dioxide gas in a certain amount of pure water through a high-pressure gas dissolving device. The mixing includes adding a certain amount of stabilizer and dispersant to the prepared chlorine dioxide solution and stirring them fully with a stirrer until they are completely dissolved. The sterilization includes sterilizing the solution with an ultraviolet lamp or a filtration system to remove possible microorganisms. The quality control includes sampling and testing the chlorine dioxide concentration to ensure that it meets the predetermined standards.

6. The fungicide composition for preventing and controlling pecan root rot and its use according to claim 5, characterized in that: In the above process, chlorine dioxide solutions with different components are produced by controlling the mass of chlorine dioxide gas dissolved into pure water.

7. The fungicide composition for preventing and controlling pecan root rot and its use according to claim 2, characterized in that: The steps for determining the severity of the disease include on-site inspection, symptom identification, disease grading, plant-by-plant evaluation, formulation of treatment plans, record keeping and reporting. Through the above detailed steps, the severity of pecan root rot can be more accurately determined and reasonable prevention and control measures can be formulated accordingly.

8. The fungicide composition for preventing and controlling pecan root rot and its use according to claim 2, characterized in that: The root irrigation treatment includes preparing a root irrigation syringe, calculating the dosage, locating the root irrigation point, drilling holes, injecting the medicine, and sealing the holes. According to the improvement of the disease, it is decided whether to carry out subsequent root irrigation treatment or other prevention and control measures. When irrigating the roots, avoid direct contact of the medicine with the trunk and leaves to avoid medicine damage. Ensure that it is carried out in windless or low wind weather to avoid the dispersion of the medicine. Considering environmental protection, avoid the medicine from flowing into water bodies or non-target areas. Through the above steps, the root irrigation treatment can be effectively carried out to prevent and control plant root diseases.

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