A seed coating agent, coating method and coated seed
By combining active ingredients such as tetrazolium pyridamole, fluchloroquine, jinggangmycin, and α-dextrin, as well as plant gums, the problem of seed coating agents inhibiting seed germination and phytotoxicity under adverse conditions was solved, thereby improving seed germination rate and seedling emergence rate and promoting root growth.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINJIANG HONGTAI SEED IND TECH CO LTD
- Filing Date
- 2026-02-11
- Publication Date
- 2026-06-19
AI Technical Summary
Existing seed dressing agents may inhibit seed germination under low temperature, drought or high humidity conditions, posing a risk of phytotoxicity. Furthermore, their function is limited to soil-borne or seed-borne diseases, and they cannot replace field management and foliar fertilization. Improper use may disrupt the nutritional balance of seeds.
Using a combination of active components including tetrazolium pyridamole, fluchloroquine, jinggangmycin, and α-dextrin, combined with plant gums such as fenugreek gum and Artemisia argyi gum, along with emulsifiers and organic acids, seeds are coated through a specific process to form a safe and breathable seed coating film.
It improves the antibacterial and insect-repellent properties of seeds, increases germination and emergence rates, reduces mold rates, promotes root growth, and achieves safer and more effective seed protection.
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of seed technology, specifically relating to a seed coating agent, a coating method, and coated seeds. Background Technology
[0002] Seed coating agents are pesticide formulations used to treat crop seeds. They solidify on the seed surface to form a seed coating film with specific strength and permeability, containing active substances (such as insecticides and fungicides) and other auxiliary ingredients, thus protecting the seed, preventing pests and diseases, and promoting growth. The key difference between seed coating agents and traditional seed soaking agents is that the agent adheres more firmly to the seed and is slowly released into the soil, prolonging its effective period.
[0003] Although seed coating agents play a vital role in modern agriculture, their application still faces significant drawbacks and challenges. First, seed coating agents themselves can physically and physiologically inhibit seed germination. If the seed coating film is too thick or has poor permeability, it can hinder seed respiration and water absorption, affecting germination, especially under adverse conditions such as low temperature, drought, or high humidity. For example, the use of seed coating agents containing tebuconazole at low temperatures has led to severe seedling loss in corn. Second, some active ingredients pose a risk of phytotoxicity under specific conditions and are easily misunderstood and stigmatized. For instance, imidacloprid caused peanut seed rot due to impurities and failure to be formulated with appropriate fungicides under low temperature and high humidity conditions, leading to the misconception that the compound itself is unsafe. In reality, this risk can be avoided by selecting high-purity active ingredients and scientifically formulating the mixture. Tebuconazole, on the other hand, has raised safety concerns due to its inhibition of seed emergence at low temperatures or high concentrations. Furthermore, there are numerous misconceptions and management issues in its market application. Many users mistakenly believe that the darker the color, the stronger the smell, or the brighter the film formed by a seed coating agent, the better its effect. In reality, these factors are unrelated to efficacy; color merely serves as a warning. Furthermore, seed coating agents have limitations. They primarily target soil-borne or seed-borne diseases and underground pests, and cannot completely replace field management and foliar fertilization required in the later stages of growth. Finally, improper use of added micronutrients or exogenous growth regulators may disrupt the seed's nutritional balance or inhibit growth, leading to poisoning symptoms. Therefore, future development of seed coating agents should focus on developing safer materials and highly effective, low-risk combinations of active ingredients. Strengthening technical guidance will help users select products specifically based on actual pest and disease conditions and strictly adhere to usage guidelines to overcome existing shortcomings and ensure sustainable and safe agricultural production. Summary of the Invention
[0004] The purpose of this invention is to provide a seed coating agent, a coating method, and coated seeds.
[0005] A seed coating agent comprising the following raw materials in parts by weight: 5-10 parts of active ingredient, 10-30 parts of emulsifier, 10-20 parts of plant gum, 1-5 parts of organic acid, 2-6 parts of pigment, and 80-160 parts of water.
[0006] The active component is a mixture of tetrazolium pyridamole and fluchloroquine in a mass ratio of (1-3):1.
[0007] The active component is a mixture of jinggangmycin and α-dextrin in a mass ratio of (2-4):1.
[0008] The emulsifier is one or more of the following: Agricultural Emulsion 33#, Agricultural Emulsion 500#, Agricultural Emulsion 600#, Agricultural Emulsion 700#, and Tween 80.
[0009] The plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of (1-4):1.
[0010] The organic acid is one or more of citric acid, humic acid, and salicylic acid.
[0011] The pigment is one or more of Pigment Red 254, Pigment Red 122, Pigment Red 177, Phthalocyanine Blue, Pigment Yellow 181, and Pigment Yellow 83.
[0012] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 50-80℃, cool it to room temperature, add the active ingredients, emulsifier, organic acid and pigment, and stir at 300-800 rpm for 5-10 minutes; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the seed surface at a speed of 300-800 rpm. The amount of spraying is 0.2-2.5% of the seed mass.
[0013] The seeds are one or more of the following: tomato, pepper, buckwheat, corn, wheat, lavender, and Amorpha fruticosa seeds.
[0014] The coated seeds obtained by the coating method.
[0015] The beneficial effects of this invention are as follows: The seed coating agent of this invention improves the antibacterial and insect-repellent properties of seeds after coating them, thereby increasing the germination rate and seedling emergence rate, reducing the mold rate, and promoting root growth. The combination of tetrazolium acetamiprid and fluchloroquine, and the combination of jinggangmycin and α-dextrin in the seed coating agent components, improves the seed germination rate and reduces the mold rate. The combination of fenugreek gum and Artemisia argyi gum improves the seedling emergence rate, and the combination has a synergistic effect. Detailed Implementation
[0016] To facilitate understanding of the present invention, a more comprehensive description will be given below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.
[0017] Example 1 A seed coating agent comprises the following raw materials in parts by weight: 8 parts of active ingredient, 20 parts of agricultural emulsion 500#, 15 parts of plant gum, 3 parts of citric acid, 4 parts of pigment red 254, and 120 parts of water; wherein the active ingredient is a mixture of tetrazolium pyridaben and fluchloroquine in a mass ratio of 2:1; and the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 2:1.
[0018] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 65°C, cool it to room temperature, add the active ingredient, agricultural emulsion 500#, citric acid and pigment red 254, and stir at 500 rpm for 8 minutes; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the tomato seeds at a speed of 600 rpm. The amount of spraying is 1.2% of the mass of the tomato seeds.
[0019] Example 2 A seed coating agent comprises the following raw materials in parts by weight: 6 parts of active ingredient, 12 parts of agricultural emulsion 33#, 12 parts of plant gum, 2 parts of humic acid, 3 parts of phthalocyanine blue, and 100 parts of water; wherein the active ingredient is a mixture of jinggangmycin and α-dextrin in a mass ratio of 2:1; and the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 1:1.
[0020] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 60°C, cool it to room temperature, add the active ingredient, agricultural emulsion 33#, humic acid and phthalocyanine blue, and stir at 400 rpm for 6 min; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the buckwheat seeds at a speed of 400 rpm. The amount of spraying is 0.8% of the weight of the buckwheat seeds.
[0021] Example 3 A seed coating agent comprises the following raw materials in parts by weight: 10 parts of active ingredient, 25 parts of Tween 80, 18 parts of plant gum, 4 parts of salicylic acid, 1.5 parts of pigment yellow 18, and 140 parts of water; wherein the active ingredient is a mixture of tetrazolium pyridamole and fluchloroquine in a mass ratio of 3:1; and the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 3:1.
[0022] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 70°C, cool it to room temperature, add the active ingredient, Tween 80, salicylic acid and pigment yellow 181, and stir at 800 rpm for 10 min. (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the wheat seeds at a speed of 800 rpm. The amount of spraying is 1.5% of the mass of the wheat seeds.
[0023] Comparative Example 1 A seed coating agent comprises the following raw materials in parts by weight: 8 parts tetrazolium pyridine, 20 parts agricultural emulsion 500#, 15 parts plant gum, 3 parts citric acid, 4 parts pigment red 254, and 120 parts water; wherein the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 2:1.
[0024] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 65°C, cool it to room temperature, add tetrazolium pyridine, agricultural emulsion 500#, citric acid and pigment red 254, and stir at 500 rpm for 8 min; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the tomato seeds at a speed of 600 rpm. The amount of spraying is 1.2% of the mass of the tomato seeds.
[0025] Comparative Example 2 A seed coating agent comprises the following raw materials in parts by weight: 8 parts of fluchlorofluorocarbonyl, 20 parts of agricultural emulsion 500#, 15 parts of plant gum, 3 parts of citric acid, 4 parts of pigment red 254, and 120 parts of water; wherein the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 2:1.
[0026] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 65°C, cool it to room temperature, add fluchloroquine, agricultural emulsion 500#, citric acid and pigment red 254, and stir at 500 rpm for 8 minutes; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the tomato seeds at a speed of 600 rpm. The amount of spraying is 1.2% of the mass of the tomato seeds.
[0027] Comparative Example 3 A seed coating agent comprises the following raw materials in parts by weight: 6 parts jinggangmycin, 12 parts agricultural emulsion 33#, 12 parts plant gum, 2 parts humic acid, 3 parts phthalocyanine blue, and 100 parts water; wherein the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 1:1.
[0028] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 60°C, cool it to room temperature, add jinggangmycin, agricultural emulsion 33#, humic acid and phthalocyanine blue, and stir at 400 rpm for 6 min; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the buckwheat seeds at a speed of 400 rpm. The amount of spraying is 0.8% of the weight of the buckwheat seeds.
[0029] Comparative Example 4 A seed coating agent comprises the following raw materials in parts by weight: 6 parts α-dextrin, 12 parts agricultural emulsion 33#, 12 parts plant gum, 2 parts humic acid, 3 parts phthalocyanine blue, and 100 parts water; wherein the plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of 1:1.
[0030] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve the plant gum in water at 60°C, cool it to room temperature, add α-dextrin, agricultural emulsion 33#, humic acid and phthalocyanine blue, and stir at 400 rpm for 6 min; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the buckwheat seeds at a speed of 400 rpm. The amount of spraying is 0.8% of the weight of the buckwheat seeds.
[0031] Comparative Example 5 A seed coating agent comprises the following raw materials in parts by weight: 10 parts of active ingredient, 25 parts of Tween 80, 18 parts of fenugreek gum, 4 parts of salicylic acid, 15 parts of pigment yellow 18, and 140 parts of water; wherein the active ingredient is a mixture of tetrazolium pyridamole and fluchloroquine in a mass ratio of 3:1.
[0032] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve fenugreek gum in water at 70°C, cool it to room temperature, add active ingredients, Tween 80, salicylic acid and pigment yellow 181, and stir at 800 rpm for 10 min. (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the wheat seeds at a speed of 800 rpm. The amount of spraying is 1.5% of the mass of the wheat seeds.
[0033] Comparative Example 6 A seed coating agent comprises the following raw materials in parts by weight: 10 parts of active ingredient, 25 parts of Tween 80, 18 parts of Artemisia argyi gum, 4 parts of salicylic acid, 15 parts of Pigment Yellow 18, and 140 parts of water; wherein the active ingredient is a mixture of tetrazolium pyridamole and fluchloroquine in a mass ratio of 3:1.
[0034] The method for coating seeds using the seed coating agent is carried out according to the following steps: (1) Dissolve Artemisia argyi gum in water at 70°C, cool it to room temperature, add active ingredients, Tween 80, salicylic acid and pigment yellow 181, and stir at 800 rpm for 10 min. (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the surface of the wheat seeds at a speed of 800 rpm. The amount of spraying is 1.5% of the mass of the wheat seeds.
[0035] Experimental example: Tomato seeds were coated according to the methods described in Example 1, Comparative Example 1, and Comparative Example 2 (uncoated tomato seeds were used as the control). Fifty coated tomato seeds were randomly selected and placed on the paper bed of the germination box. The seeds were cultured alternately for 8 hours of light and 16 hours of darkness each day, with the temperature maintained at 25°C. A suitable amount of water was sprayed regularly each day to keep the germination paper moist. Germination rate was recorded starting from the 6th day of the experiment. Germination was considered to have ended when two leaves had grown. Germination rate and mold rate were recorded.
[0036] Each experiment was repeated three times, and the average value was taken. Statistical analysis was performed using SPSS 24.0 software. Quantitative data were expressed as x ± (mean ± standard deviation). The Kolmogorov-Smirnov test was used to test the normality of the data. For normally distributed data, the t-test was used to compare the differences in means between two groups, with P < 0.05 considered statistically significant. The measurement results are shown in Table 1. Table 1
[0037] Note: * indicates that compared with Example 1 group, P<0.05.
[0038] Buckwheat seeds were coated according to the methods described in Examples 2, 3, and 4 (uncoated buckwheat seeds were used as the control). Fifty coated buckwheat seeds were randomly selected and placed on the paper bed of the germination box. The seeds were cultured alternately for 8 hours of light and 16 hours of darkness each day, with the temperature maintained at 22°C. A suitable amount of water was sprayed regularly each day to keep the germination paper moist. Germination rate was recorded starting from the 4th day of the experiment. Germination was considered to have ended when leaves appeared. Germination rate and mold rate were recorded.
[0039] Each experiment was repeated three times, and the average value was taken. Statistical analysis was performed using SPSS 24.0 software. Quantitative data were expressed as x ± (mean ± standard deviation). The Kolmogorov-Smirnov test was used to test the normality of the data. For normally distributed data, the t-test was used to compare the differences in means between two groups, with P < 0.05 considered statistically significant. The measurement results are shown in Table 2. Table 2
[0040] Note: * indicates that compared with Example 2 group, P<0.05.
[0041] Wheat seeds were coated according to the methods described in Example 3, Comparative Example 5, and Comparative Example 6 (uncoated wheat seeds were used as the control). Fifty coated tomato seeds were randomly selected and placed in a sandbox. The seeds were cultured alternately for 12 hours of light and 12 hours of darkness each day, with the temperature maintained at 20°C. The sandbox was kept moist by spraying water regularly each day. Seed emergence was considered seedling emergence. The seed emergence rate was calculated on the 5th day of the experiment, and the root length was recorded.
[0042] Each experiment was repeated three times, and the average value was taken. Statistical analysis was performed using SPSS 24.0 software. Quantitative data were expressed as x ± (mean ± standard deviation). The Kolmogorov-Smirnov test was used to test the normality of the data. For normally distributed data, the t-test was used to compare the differences in means between two groups, with P < 0.05 considered statistically significant. The measurement results are shown in Table 3. Table 3
[0043] Note: * indicates that compared with Example 3 group, P<0.05.
[0044] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A seed coating agent characterized by, The raw materials include the following parts by weight: 5-10 parts of active ingredient, 10-30 parts of emulsifier, 10-20 parts of plant gum, 1-5 parts of organic acid, 2-6 parts of pigment, and 80-160 parts of water.
2. The coating agent according to claim 1, characterized by The active component is a mixture of tetrazolium pyridamole and fluchloroquine in a mass ratio of (1-3):
1.
3. The coating agent according to claim 1, characterized by The active component is a mixture of jinggangmycin and α-dextrin in a mass ratio of (2-4):
1.
4. The seed coating agent according to claim 1, characterized in that, The emulsifier is one or more of the following: Agricultural Emulsion 33#, Agricultural Emulsion 500#, Agricultural Emulsion 600#, Agricultural Emulsion 700#, and Tween 80.
5. The seed coating agent according to claim 1, characterized in that, The plant gum is a mixture of fenugreek gum and Artemisia argyi gum in a mass ratio of (1-4):
1.
6. The seed coating agent according to claim 1, characterized in that, The organic acid is one or more of citric acid, humic acid, and salicylic acid.
7. The seed coating agent according to claim 1, characterized in that, The pigment is one or more of Pigment Red 254, Pigment Red 122, Pigment Red 177, Phthalocyanine Blue, Pigment Yellow 181, and Pigment Yellow 83.
8. A method for coating seeds using the seed coating agent according to claim 1, characterized in that, Follow these steps: (1) Dissolve the plant gum in water at 50-80℃, cool it to room temperature, add the active ingredients, emulsifier, organic acid and pigment, and stir at 300-800 rpm for 5-10 minutes; (2) Place the seeds in a carrier pot and spray the seed coating agent prepared in step (1) onto the seed surface at a speed of 300-800 rpm. The amount of spraying is 0.2-2.5% of the seed mass.
9. The method for coating seeds with the seed coating agent according to claim 8, characterized in that, The seeds are one or more of the following: tomato, pepper, buckwheat, corn, wheat, lavender, and Amorpha fruticosa seeds.
10. Coated seeds obtained by any one of the coating methods of claims 8-9.