CN101720768B - Compound seed treating agent of tebuconazole and capsaicine and preparation method thereof - Google Patents

Abstract

The invention discloses a compound seed treatment agent of tebuconazole and capsaicin and a preparation method thereof, comprising the following components in percentage by weight: 2-8% of tebuconazole, 1-5% of capsaicin, and 10-25% of surfactant , solvent 10-30%, film-forming agent 1-5%, water 56-76%. The compound seed treatment agent of the present invention, on the one hand, can prevent and treat the seedling stage diseases of corn and other crops, and at the same time, it has a repelling effect on mice, which improves the control effect. Production costs, while reducing the environmental pollution caused by the large amount of spraying. According to the efficacy test in the field plot, it has a good control effect on the damage of corn seedling diseases and insect pests, and the field seedling preservation rate is high.

Description

Tebuconazole and capsaicin compound seed treatment agent and preparation method thereof

technical field

The invention relates to a compound seed treatment agent of tebuconazole and capsaicin and a preparation method thereof.

technical background

Due to safety and environmental considerations, the structure of pesticides is changing, and seed treatment agents are getting more and more attention in agricultural production. One of the main reasons is its high degree of targeting. Different from general field spraying and application, seed treatment concentrates the application of pesticides on crop seeds, thereby greatly reducing the amount of pesticides used. Compared with furrow application, 15% of it is not used for seed treatment; compared with foliar spraying, less than 1% of it is used for seed treatment. Therefore, seed treatment is an important way to reduce the amount of pesticide active substances, which is in line with the current general trend of the world. From the perspective of environmental protection, seed treatment agents are popular pesticide preparations. The fungicides used in seed treatment agents have a wide range and variety. Can be used alone or mixed. Currently the most widely sold worldwide is caboxin, which is used in several commodities, the most famous being Vitavax, which has been adopted by more than 50 countries and applied to more than 30 different crops. The second is Catane, which is mainly used in corn; the third is Baytan. The varieties of insecticides used for seed treatment are relatively limited, and the two varieties of carbofuran and methiocarb account for 70%. And along with the use of this type of highly toxic insecticides, on the one hand, kill the pests that harm crops, and also kill a large number of organisms, such as birds, seriously endangering the ecological balance of the environment.

Contents of the invention

The object of the present invention is to provide a kind of tebuconazole and capsaicin composite seed treatment agent and preparation method thereof, to overcome the above-mentioned defects that exist in the prior art.

The compound seed treatment agent of tebuconazole and capsaicin of the present invention, comprises the component of following percentage by weight:

Tebuconazole 2-8%

Capsaicin 1-5%

Surfactant 10-25%

Solvent 10-30%

Film former 1-5%

Water 56～76%

The sum of the percentages of the above components is 100%.

Described tebuconazole, general name is Tebuconazole, and chemical name is (RS)-1-(4-chlorophenyl)-4,4-dimethyl-3-(1H-1,2,4 triazole-1 -ylmethyl)pentan-3-ol. It can effectively control a variety of rust, powdery mildew, net spot, root rot, head blight, smut and seed-borne ring spot of cereal crops, etc. Tebuconazole is an efficient systemic fungicide , has the characteristics of low toxicity, less dosage, wide bactericidal spectrum, and stable effect. It can use 95% tebuconazole technical product produced by Jiangsu Yancheng Limin Agrochemical Co., Ltd.

Capsaicin (Capsaicin) is a natural plant alkaloid, which is an active ingredient extracted from the ripe fruit of Solanaceae pepper. It is mainly used for analgesia and antipruritic. lasting. In the field of biopesticides, capsaicin, as a new type of green pesticide, has good contact and avoidance effects, and can achieve high efficacy, long-lasting effect and degradability for crop pest control. It is a new type of environmentally friendly pesticide in the 21st century. It can be used The capsaicin produced by Qingdao Haida Chemical Co., Ltd. has a content of ≥98%.

The surfactant is selected from alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, fatty acid polyoxyethylene ester, ethoxy propoxylated derivatives, special phenol formaldehyde resin polyoxyethylene ether, One or more of oxyethylene ether, phenol derivative polyoxyethylene/polyoxypropylene ether (slanted bars indicate mixed polymerization), alkylphenol polyoxyethylene ether series;

The pesticide emulsifier is selected from the group consisting of alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, fatty acid polyoxyethylene ester, ethoxy propoxylated derivatives, special phenol formaldehyde resin polyoxyethylene ether, etc. One or more of oxyethylene ether, phenol derivative polyoxyethylene/polyoxypropylene ether (slanted bars indicate mixed polymerization), alkylphenol polyoxyethylene ether series. Products from Nanjing Zhongshan Chemical Plant and Liaoyang Aoke Chemical Co., Ltd. can be used;

The solvent is selected from one or a mixture of methanol, ethanol, ethyl acetate, isopropanol, n-butanol, benzene, cyclohexane, ethane or chloroform;

The film-forming agent is selected from more than one of polyvinyl alcohol, polyvinylpyrrolidone or hydroxypropyl cellulose;

Preferably, it also includes a warning color of 0.1-1% of the total weight of the compound seed treatment agent;

The warning color is selected from water-soluble dyes, such as acid scarlet GR, acid rose bengal dye, weak acid brilliant blue, etc.;

The compound seed treatment agent of preferred tebuconazole of the present invention and capsaicin, comprises the component of following percentage by weight:

Tebuconazole 2.5-3%

Capsaicin 1.5-2.5%

Surfactant 20-25%

Solvent 22-25%

Film former 1.5-3%

Warning color 0.1-1%

Water balance

The preparation method of the compound seed treatment agent of tebuconazole and capsaicin of the present invention comprises the following steps: stirring and emulsifying the above-mentioned various determined raw materials at a temperature of 10-60°C to obtain the seed treatment agent. The obtained product has a transparent appearance, is stable in hot storage at 54±1°C, stable in cold storage at 0±1°C, and does not delaminate.

Since tebuconazole and capsaicin are organic compounds that are insoluble in water, the present invention selects certain surfactants and less environmentally polluting solvents to prepare formulations that can be dispersed in water, and the obtained composite seed treatment agent, on the one hand It can prevent and control seedling diseases of corn and other crops, and at the same time, it has the effect of avoiding mice, which improves the control effect. At the same time, it has fast absorption and strong target effect. massive environmental pollution. According to the efficacy test in the field plot, it has a good control effect on the damage of corn seedling diseases and insect pests, and the field seedling preservation rate is high.

Detailed ways

Example 1

The weight content of each component of the seed treatment agent is:

2.5% tebuconazole; 1.5% capsaicin; 25% surfactant; 30.0% butyl acetate; 1.5% polyvinylpyrrolidone; 0.8% warning color; the balance is water.

The surfactant is alkylphenol polyoxyethylene ether series, which can be NP series products of Liaoyang Aoke Chemical Co., Ltd.;

Described warning color is acid rose bengal;

Add the above-mentioned proportioned materials into the emulsification reactor in turn, stir and emulsify at normal temperature, and obtain the compound seed treatment agent of tebuconazole and capsaicin when the solution becomes a uniform transparent liquid.

Example 2

The weight content of each component of the seed treatment agent is:

Tebuconazole 2.0%; capsaicin 1.5%; surfactant 20%; methanol 5.0%; polyethylpyrrolidone 1.5%; warning color 0.2%; the balance is water.

Described warning color is acid rose bengal;

Surfactant is castor oil polyoxyethylene ether, can adopt the EL series product of Liaoyang Aoke Chemical Co., Ltd.

Add the above-mentioned proportioned materials into the emulsification reactor in turn, stir and emulsify at normal temperature, and obtain the compound seed treatment agent of tebuconazole and capsaicin when the solution becomes a uniform transparent liquid.

Example 3

The weight content of each component of the seed treatment agent is:

Tebuconazole 3.0%; Capsaicin 1.5%; Surfactant 25%; Isobutanol) 25.0%; Polyvinyl alcohol 3%; Warning color 0.2%; The balance is water.

The alert color Acid Scarlet GR,

The surfactant is special phenol-formaldehyde resin polyoxyethylene ether, which is Nongru No. 400 product produced by Nanjing Zhongshan Chemical Factory.

Add the above-mentioned proportioned materials into the emulsification reactor in turn, stir and emulsify at normal temperature, and obtain the compound seed treatment agent of tebuconazole and capsaicin when the solution becomes a uniform transparent liquid.

Example 4

The weight content of each component of the seed treatment agent is:

2.0% tebuconazole; 2.5% capsaicin; 20% surfactant; 22.0% cyclohexane; 1.5% polyvinyl alcohol; 0.2% warning color; the balance is water.

The warning color acid rose bengal;

The surfactant is a mixture (1:1, weight ratio) of special formaldehyde resin polyoxyethylene ether (Nongru 400#) and castor oil polyoxyethylene ether, which can be produced by Nanjing Zhongshan Chemical Factory.

Add the above-mentioned proportioned materials into the emulsification reactor in turn, stir and emulsify at normal temperature, and obtain the compound seed treatment agent of tebuconazole and capsaicin when the solution becomes a uniform transparent liquid.

Example 5

The weight content of each component of the seed treatment agent is:

2.0% tebuconazole; 2.5% capsaicin; 25% surfactant; 25.0% ethyl acetate; 1.5% polyvinyl alcohol; 0.2% warning color; the balance is water.

The warning color acid rose bengal;

The surfactant is alkylphenol polyoxyethylene ether (NP1), which can be produced by Nanjing Zhongshan Chemical Factory.

Add the above-mentioned proportioned materials into the emulsification reactor in turn, stir and emulsify at normal temperature, and obtain the compound seed treatment agent of tebuconazole and capsaicin when the solution becomes a uniform transparent liquid.

Example 6

The control effects of the tebuconazole and capsaicin composite seed treatment agent prepared by the present invention on corn seedling pests and diseases are shown in Tables 1-6.

The usage method is as follows: coating is carried out according to the ratio of seeds and medicaments, and the said dosage is the ratio of the seed treatment agent to the weight of the seeds.

Table 1

seed treatment agent Applied crops Dosage (%) Seedling preservation rate (%) Remark Example 1 corn 1.0% 90.5 Dosage safety Example 2 corn 2.0% 95.6 Dosage safety Example 3 corn 3.0% 99.8 Dosage safety

Table 2

seed treatment agent Applied crops Dosage (%) Seedling preservation rate (%) Remark Example 1 corn 1.0% 91.3 Dosage safety Example 2 corn 2.0% 97.5 Dosage safety Example 3 corn 3.0% 96.4 Dosage safety

table 3

seed treatment agent Applied crops Dosage (%) Seedling preservation rate (%) Remark Example 1 corn 1.0% 921 Dosage safety

Example 2 corn 2.0% 97.7 Dosage safety Example 3 corn 3.0% 95.9 Dosage safety

Table 4

seed treatment agent Applied crops Dosage (%) Seedling preservation rate (%) Remark Example 1 corn 1.0% 91.9 Dosage safety Example 2 corn 2.0% 98.7 Dosage safety Example 3 corn 3.0% 96.8 Dosage safety

table 5

seed treatment agent Applied crops Dosage (%) Seedling preservation rate (%) Remark Example 1 corn 1.0% 90.1 Dosage safety Example 2 corn 2.0% 96.8 Dosage safety Example 3 corn 3.0% 98.1 Dosage safety

Table 6

seed treatment agent Applied crops Dosage (%) Seedling preservation rate (%) Remark Example 1 corn 1.0% 93.1 Dosage safety Example 2 corn 2.0% 98.9 Dosage safety Example 3 corn 3.0% 98.1 Dosage safety

Claims (5)

1. tebuconazole and capsaicin compound seed treatment agent, it is characterized in that, comprise the component of following percentage by weight:

The sum of the percentages of the above components is 100%; The surfactant is selected from alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, fatty acid polyoxyethylene ester, ethoxy propoxylated derivatives, special phenol formaldehyde resin polyoxyethylene ether, One or more of oxyethylene ether, phenol derivative polyoxyethylene/polyoxypropylene ether or alkylphenol polyoxyethylene ether series; The solvent is selected from one or a mixture of methanol, ethanol, ethyl acetate, isopropanol, n-butanol, benzene, cyclohexane, ethane or chloroform. 2. tebuconazole and capsaicin composite seed treatment agent according to claim 1, is characterized in that, described film-forming agent is selected from more than one in polyvinyl alcohol, polyvinylpyrrolidone or hydroxypropyl cellulose. 3. The compound seed treatment agent of tebuconazole and capsaicin according to any one of claims 1 to 2, further comprising a warning color of 0.1-1% of the total weight of the compound seed treatment agent. 4. tebuconazole according to claim 3 and capsaicin composite seed treatment agent, is characterized in that, is made up of the component of following weight percent:

5. prepare the preparation method of the compound seed treatment agent of tebuconazole and capsaicin described in any one of claim 1～4, comprise the following steps: at the temperature of 10-60 ℃ of above-mentioned various determined raw materials, stirring and emulsifying, The said seed treatment agent can be obtained.