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Propanil missible oil herbicide and preparation method thereof

A technology of propanil emulsifiable concentrate and herbicide, which is applied in the direction of herbicide and algicide, botanical equipment and method, biocide, etc., and can solve the problem of residual toxicity in the field during the effective period, and can not completely and effectively control weeds and weeds. In order to achieve the effect of high application prospect and promotion value, excellent weeding effect and complementary effects

Inactive Publication Date: 2021-10-22
安徽省圣丹生物化工有限公司
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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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  • Propanil missible oil herbicide and preparation method thereof
  • Propanil missible oil herbicide and preparation method thereof
  • Propanil missible oil herbicide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The chrysanthemum extract is prepared by the following steps:

[0061] Add dried chrysanthemum and 95% ethanol solution to the three-necked flask, ultrasonically extract at 40°C and 30kHz frequency for 3h, filter the extract, and concentrate the filtrate to one-tenth of the original volume by rotary evaporation, and then centrifuge to extract. The supernatant liquid is the chrysanthemum extract, wherein the mass ratio of the dried chrysanthemum and the ethanol solution is 1:20, and the centrifugation condition is centrifugation at 8000 rpm for 10 min.

Embodiment 2

[0063] The chrysanthemum extract is prepared by the following steps:

[0064] Add dried chrysanthemum and 95% ethanol solution to the three-necked flask, ultrasonically extract for 3.5 hours at 42 ° C and 35 kHz frequency, filter the extract, and concentrate the filtrate to one-tenth of the original volume by rotary evaporation, and then centrifuge. The supernatant liquid was taken, which was the chrysanthemum extract, wherein the mass ratio of the dried chrysanthemum and the ethanol solution was 1:22, and the centrifugation condition was centrifugation at 8500 rpm for 10 min.

Embodiment 3

[0066] The chrysanthemum extract is prepared by the following steps:

[0067] Add dried chrysanthemum and 95% ethanol solution to the three-necked flask, ultrasonically extract for 4 hours at 45 ° C and 40 kHz frequency, filter the extract, and concentrate the filtrate to one-tenth of the original volume by rotary evaporation, and then centrifuge to extract. The supernatant liquid is the Chrysanthemum radix extract, wherein the mass ratio of the dried Chrysanthemum radix and the ethanol solution is 1:25, and the centrifugation condition is centrifugation at 9000 rpm for 10 min.

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Abstract

The invention discloses a propanil missible oil herbicide, and belongs to the technical field of herbicides. The herbicide comprises the following raw materials in percentage by weight: 1-35% of propanil, 1-20% of pyriminobac-methyl, 1-20% of isophorone, 4-15% of a crowndaisy chrysanthemum extract, 2-10% of potassium nitrate, 3-5% of an emulsifier, 1-3% of a dispersant, 1-3% of a defoaming agent, 3-6% of an ultraviolet light absorber, 10-20% of vegetable oil and the balance of a carrier; and the invention also discloses a preparation method of the herbicide. Propanil and pyriminobac-methyl are compounded, the effects are complementary, the weeding spectrum is wider, the weeding activity is high, the weeding effect is more excellent, and the ultraviolet light absorber is added into the herbicide formula, so that the compound herbicide has the effect of resisting oxidation aging and ultraviolet light aging, effective components are prevented from being decomposed and losing efficacy when exposed to light, and the pesticide effect is kept for a long time.

Description

technical field [0001] The invention belongs to the technical field of herbicides, and relates to a propanil EC herbicide and a preparation method thereof. Background technique [0002] Herbicides are agents that can kill weeds completely or selectively, also known as herbicides, and are 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 their herbicidal spectrum are also limited. A single herbicide cannot completely and effectively control the occurrence of weeds. Some herbicides have high water solubility or long field duration and excessive dosage. Large or uneven application is likely to cause residual poisoning; in addition, the proper preservation of herbicides is also a key factor in maintaining long-lasting efficacy, but limited by the impact of com...

Claims

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Application Information

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IPC IPC(8): A01N25/22A01N37/22A01N43/54A01N59/00A01N65/12A01P13/00C07D401/14
CPCA01N25/22A01N37/22A01N43/54A01N59/00A01N65/12A01N65/00C07D401/14
Inventor 陈金如钱同兰方向明范进林
Owner 安徽省圣丹生物化工有限公司
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