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Compound herbicide based on glufosinate-p and pyroxasulfone

A technology of compound herbicide, pyraclofenazole, which is applied in the direction of herbicides and algicides, chemicals for biological control, biocides, etc., which can solve the problem of incomplete and effective control of weeds and the dosage of long-term effects in the field Residual toxicity, herbicide safety limit and other problems, to achieve the effect of high application prospect and promotion value, excellent weeding effect and small drift

Inactive Publication Date: 2021-08-24
安徽喜田生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention: current herbicides are limited by safety, and herbicide spectrum is also limited. Using a single agent of a herbicide alone cannot completely and effectively control the occurrence of weeds. Too long a period of efficacy, excessive dosage or uneven application will easily cause residual toxicity; moreover, proper storage of herbicides is also a key factor for maintaining long-lasting efficacy, but limited by the influence of complex environments, only relying on protection from light and shading Shade storage is often ineffective, so developing a herbicide with a broad herbicidal spectrum and easy storage is a problem that the industry needs to solve

Method used

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  • Compound herbicide based on glufosinate-p and pyroxasulfone
  • Compound herbicide based on glufosinate-p and pyroxasulfone
  • Compound herbicide based on glufosinate-p and pyroxasulfone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The UV absorber is prepared by the following steps:

[0056] Step S1, add 25.5g of concentrated sulfuric acid with a mass fraction of 98%, 35mL of deionized water and 17.1g of 2-amino-5-chlorophenol into a three-necked flask, stir evenly, cool down to 0°C, and dropwise add 18.1g of 40% sodium nitrite solution was refluxed for 1 hour to obtain intermediate 1;

[0057] Step S2, add 18.2mL of sodium acetate solution and 50mL of ethyl acetoacetate ethanol solution into the three-necked flask, stir well, control the temperature at 10°C, add 1.5g of intermediate 1 to it, reflux for 10h, filter, and filter cake Wash twice with ethanol solution with a mass fraction of 50%, and then dry at 60°C for 4 hours to obtain intermediate 2, wherein sodium acetate and deionized water in the sodium acetate solution are mixed according to the ratio of 9.1g:16g, ethyl acetoacetate Ethyl acetoacetate and absolute ethanol are mixed according to the ratio of 2.6g: 65g in the ethanol solution o...

Embodiment 2

[0065] The UV absorber is prepared by the following steps:

[0066] Step S1, add 25.6g of concentrated sulfuric acid with a mass fraction of 98%, 37mL of deionized water and 17.3g of 2-amino-5-chlorophenol into a three-necked flask, stir evenly, cool down to 3°C, and dropwise add 18.3g of 40% sodium nitrite solution was refluxed for 2 hours to obtain intermediate 1;

[0067] Step S2, add 18.3mL of sodium acetate solution and 53mL of ethyl acetoacetate ethanol solution into the three-necked flask, stir well, control the temperature at 11°C, add 1.6g of intermediate 1 to it, reflux for 11h, filter, and filter cake Wash twice with ethanol solution with a mass fraction of 50%, and then dry at 65°C for 4 hours to obtain intermediate 2, wherein sodium acetate and deionized water in the sodium acetate solution are mixed according to the ratio of 9.2g:16.3g, and acetoacetic acid Ethyl acetoacetate and absolute ethanol are mixed according to the ratio of 2.7g:68g in the ethanol soluti...

Embodiment 3

[0075] The UV absorber is prepared by the following steps:

[0076] Step S1, add 25.7g of concentrated sulfuric acid with a mass fraction of 98%, 40mL of deionized water and 17.5g of 2-amino-5-chlorophenol into a three-necked flask, stir evenly, cool down to 5°C, and dropwise add 18.5g of 40% sodium nitrite solution was refluxed for 2 hours to obtain intermediate 1;

[0077]Step S2, add 18.5mL of sodium acetate solution and 55mL of ethyl acetoacetate ethanol solution into the three-necked flask, stir evenly, control the temperature at 12°C, add 1.8g of intermediate 1 to it, reflux for 12h, filter, and filter cake Wash 3 times with ethanol solution with a mass fraction of 50%, and then dry at 70°C for 5 hours to obtain intermediate 2, wherein sodium acetate and deionized water in the sodium acetate solution are mixed according to the ratio of 9.4g:16.5g, and acetoacetic acid Ethyl acetoacetate and absolute ethanol are mixed according to the ratio of 2.8g:70g in the ethanol sol...

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Abstract

The invention discloses a compound herbicide based on glufosinate-p and pyroxasulfone, belonging to the technical field of herbicides. The compound herbicide comprises the following raw materials in percentage by weight: 1-50% of glufosinate-p, 1-30% of pyroxasulfone, 2-10% of potassium nitrate, 1-3% of a surfactant, 1-3% of a dispersing agent, 1-3% of a defoaming agent, 1-3% of an antifreeze agent, 3-6% of an ultraviolet light absorber and 10-20% of vegetable oil, with the balance being a carrier. The invention also discloses a preparation method of the compound herbicide. According to the compound herbicide, the glufosinate-p and pyroxasulfone are compounded and have complementary effects, so a weeding spectrum is wider, weeding activity is high, and weeding effect is more excellent; and in addition, the ultraviolet light absorber is added into a herbicide formula, so the compound herbicide has the effects of resisting oxidation aging and ultraviolet light aging, effective components are prevented from being decomposed and losing efficacy when exposed to light, and herbicide effect is kept for a long time.

Description

technical field [0001] The invention belongs to the technical field of herbicides and relates to a compound herbicide based on glufosinate-ammonium and metazafen-sulfone. Background technique [0002] Herbicides refer to agents that can completely or selectively kill weeds, also known as herbicides, a class of substances used to eliminate or inhibit plant growth. Herbicides are widely used in agriculture because of their low cost, high efficiency, easy operation, labor saving, and obvious weed control effect. [0003] At present, herbicides are limited by safety and herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds. Large or uneven application is likely to cause residual toxicity; moreover, proper storage of herbicides is also a key factor for maintaining long-lasting efficacy, but limited by the influence of complex environments, only relying on dark and shade storage is often ineffective ...

Claims

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Application Information

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IPC IPC(8): A01N43/80A01N57/20A01N25/22A01P13/00C07D417/14
CPCA01N25/22A01N43/80A01N57/20C07D417/14
Inventor 郭晓刚徐艳春
Owner 安徽喜田生物科技有限公司
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