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Weeding composition, weeding preparation and application thereof

A technology for herbicidal compositions and preparations, applied in the directions of herbicides and algaecides, application, biocides, etc., can solve the problems of poor broad-leaved weed control effect, death, and excessive use of herbicides. Not easy to control, broad spectrum of herbicide, high safety effect

Active Publication Date: 2020-04-10
河北省农林科学院粮油作物研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Fenflutrazone, chemical name: 4-(2-chloro-4-(methylsulfonyl)-3-(2,2,2-trifluoroethoxy)methyl)benzoyl)-l- Ethyl-1H-pyrazol-5-yl 1,3-dimethyl-1H-pyrazole-4-carboxylic acid belongs to the herbicide class of p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors, mainly by inhibiting Plants control the activity of key pigment enzymes in photosynthesis, hindering the conversion of substrates into homogentisic acid, resulting in the failure of normal synthesis of tocopherol and plastoquinone, affecting the synthesis of carotenoids in the target body, resulting in yellowing and whitening of leaves, affecting Photosynthesis in the plant proceeds normally, eventually causing it to die
Fenfluroxyzone has a good effect on grassy weeds such as crabgrass, barnyardgrass, and goosegrass, but it has poor control effect on broad-leaved weeds
[0006] At present, there are still some problems in post-emergence weeding of corn, such as few herbicide varieties, excessive use, and weeds are prone to develop resistance.

Method used

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  • Weeding composition, weeding preparation and application thereof
  • Weeding composition, weeding preparation and application thereof
  • Weeding composition, weeding preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of 40% flufenoxalic acid·flufenoxazone suspension

[0030] The formula is composed of (mass percentage content): 30% flufenoxalic acid, 10% fluroxypyr, 4% nonylphenol polyoxyethylene ether, 1% xanthan gum, 3.5% lignosulfonate, 0.3% The silicone defoamer and the balance deionized water make up 100%.

[0031] Preparation method: When all the materials in the above formula except xanthan gum are put into the mixing kettle one by one, the 30KW / 1400r / min high-speed shearing machine is turned on for shearing and dispersing. After the feeding is completed, shearing is performed for 30 minutes, and then passed through the sand mill Three-stage sand milling to grind the particle size of the material to D 90 After 3~6um, put it into the storage tank. After grinding, soak the xanthan gum with water at 1:30~50, then put it in the storage tank and cut it for 20min. After the dispersion is evenly distributed, the sample is analyzed. The quality inspection meets the national ch...

Embodiment 2

[0033] 30% flufenoxalic acid·flufenoxazone dispersible oil suspension concentrate

[0034] The formula is composed of (mass percentage): 22% flufenoxalic acid, 8% fluroxypyr, 4% calcium dodecylbenzene sulfonate, 3.5% fatty acid polyoxyethylene ester, 5% castor oil polyoxyethylene Ether, 2% organic bentonite and the balance methyl oleate make up 100%.

[0035] Preparation method: Put the above-mentioned materials into the mixing kettle, turn on the 30KW / 1400r / min high-speed shearing machine to cut and disperse, and then cut for 30 minutes after the feeding is completed, and then pass through the three-stage sand mill of the sand mill to grind the particle size to D 90 After 3~6μm, it is put into the storage tank. After grinding, the material is sheared for 20min and evenly dispersed and then sampled and analyzed. The quality inspection complies with the standard of my country's chemical industry standard "Pesticide Suspending Concentrate Product Standard Compilation Specification" (...

Embodiment 3

[0037] 70% flufenoxalic acid·flufenoxazone water dispersible granules

[0038] The formula is composed of (mass percentage): 45% flufenoxalic acid, 25% fluroxypyr, 4% polycarboxylate, 3% sodium lauryl sulfate, 2% saponin powder and the balance of kaolin Make up 100%.

[0039] Preparation method: mix the above-mentioned materials evenly and pulverize to D by airflow 90 After 10~13um, add water and disperse the water evenly through a homogenizing disperser, then perform extrusion granulation, fluidized bed drying, and particle screening to obtain water dispersible granules.

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Abstract

The invention provides a weeding composition, a weeding preparation and application thereof, and belongs to the technical field of herbicides, the weeding composition comprises the following effectivecomponents: flumiclorac-pentyl and fenpyrazone; wherein the mass ratio of the flumiclorac-pentyl to fenpyrazone is (1-8): (8-1). The weeding composition and the weeding preparation provided by the invention have the advantages of wide herbicidal spectrum, high safety to crops, high prevention effect on drug-resistant weeds and the like.

Description

Technical field [0001] The invention belongs to the technical field of herbicides, and in particular relates to a herbicidal composition, herbicidal preparation and application thereof. Background technique [0002] Corn is a very important food crop in my country, and it is also an important fodder crop. In recent years, with the development of industries such as animal husbandry, food processing, winemaking, and biodiesel, the market demand for corn has continued to increase. [0003] Weeds in corn fields are common and there are many types, including broadleaf weeds and grassy weeds. Maize suffers the most serious damage from weeds at the seedling stage. When maize at the seedling stage is harmed by weeds, the plants are short and the stalks are thin and yellow, which leads to poor growth of the corn in the middle and late stages and severe yield reduction. Therefore, the chemical control of weeds in corn fields is carried out in two critical periods after sowing, before seedl...

Claims

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Application Information

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IPC IPC(8): A01N43/56A01N37/36A01P13/00
CPCA01N37/36A01N43/56
Inventor 刘小民王伟聂东兴许贤赵铂锤王贵启李秉华田胜民
Owner 河北省农林科学院粮油作物研究所
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