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Herbicide containing pretilachlor, pyrazosulfuron-ethyl and penoxsulam as well as preparation method and application thereof

A technology of penoxsulam and pyrazosulfuron, applied in herbicides and algicides, botanical equipment and methods, applications, etc., can solve precipitation aggregation, cannot achieve herbicidal effect, cannot effectively attach to plants surface problems

Pending Publication Date: 2022-03-18
SHANDONG DEHAO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, drone spraying is usually used for spraying liquid medicine, which puts forward higher requirements on the dispersion stability of the liquid medicine and the adhesion after spraying, etc., and the above-mentioned is composed of pretilachlor, pyrazosulfuron-methyl and penoxsulam The compound herbicides often have the problems of poor dispersion stability, Oswald ripening and easy water formation. When spraying, it is easy to produce sedimentation and aggregation, block the nozzle, and cannot effectively adhere to the surface of the plant, so that a good weeding effect cannot be achieved.

Method used

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  • Herbicide containing pretilachlor, pyrazosulfuron-ethyl and penoxsulam as well as preparation method and application thereof
  • Herbicide containing pretilachlor, pyrazosulfuron-ethyl and penoxsulam as well as preparation method and application thereof
  • Herbicide containing pretilachlor, pyrazosulfuron-ethyl and penoxsulam as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A herbicide containing pretilachlor, pyrazosulfuron-methyl and penoxsulam, comprising the following components in parts by weight: 10 parts of pretilachlor, 1 part of pyrazosulfuron-methyl, 0.5 part of penoxsulam, 0.1 part of 1-(difluoromethyl)-6-nitro-1H-indole, 5 parts of emulsifier, 1 part of surfactant, 0.5 part of defoamer, 1 part of thickener, 1 part of dispersant, spray Add 1 part of additive, make up to 100 parts with water.

[0028] Among them, the surfactant is alkylphenol polyoxyethylene ether, the defoamer is silicone, the thickener is xanthan gum, the spraying aid is hydroxypropyl guar gum, and the dispersant is sulfate dispersant SD- 208, the emulsifier is sodium alkylbenzene sulfonate.

[0029] The preparation method is: mix surfactant, defoamer, thickener, spray aid, emulsifier, water and dispersant, mix evenly by high-speed shearing, then add pretilachlor, pyrazosulfuron-methyl, pentafluoro Sulcolam is ball milled in a ball mill for 2-3 hours, so that...

Embodiment 2

[0031] The difference from Example 1 is that the herbicide formula is: 20 parts of pretilachlor, 3 parts of pyrazosulfuron-methyl, 1.5 parts of penoxsulam, 1-(difluoromethyl)-6-nitro-1H - 0.5 parts of indole, 10 parts of emulsifier, 3 parts of surfactant, 1 part of defoamer, 2 parts of thickener, 3 parts of dispersant, 2 parts of spray aid, and make up to 100 parts of water. Wherein, the surfactant is fatty alcohol polyoxyethylene ether, and the thickener is hydroxymethyl cellulose, see Table 1 for details.

Embodiment 3

[0033] The difference from Example 1 is that the herbicide formula is: 14 parts of pretilachlor, 1.5 parts of pyrazosulfuron-methyl, 0.75 parts of penoxsulam, 1-(difluoromethyl)-6-nitro-1H - 0.2 parts of indole, 6 parts of emulsifier, 1.5 parts of surfactant, 0.75 parts of defoamer, 2 parts of thickener, 2 parts of dispersant, 1 part of spray aid, and make up to 100 parts of water. Wherein, the surfactant is tallow amine polyoxyethylene ether, and the thickener is xanthan gum, see Table 1 for details.

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Abstract

The invention relates to a herbicide containing pretilachlor, pyrazosulfuron-ethyl and penoxsulam, which is prepared from the following ingredients in parts by weight: 10 to 20 parts of pretilachlor, 1 to 3 parts of pyrazosulfuron-ethyl, 0.5 to 1.5 parts of penoxsulam, 0.1 to 0.5 part of 1-(difluoromethyl)-6-nitro-1H-indole, 5 to 10 parts of emulsifying agents, 1 to 3 parts of surfactants, 0.5 to 1 part of defoaming agents, 1 to 2 parts of thickening agents and 1 to 3 parts of dispersing agents. 1-2 parts of a spray auxiliary agent, and the balance being water. Through blending of the formula components, the volatilization and drift loss of the liquid medicine are reduced, the deposition amount of fog drops on leaf surfaces is increased, and the effect is improved.

Description

technical field [0001] The invention relates to the technical field of pesticide compounding, in particular to a herbicide containing pretilachlor, pyrazosulfuron-methyl and penoxsulam, a preparation method and application thereof. Background technique [0002] Pretilachlor, chemical name: 2-chloro-N-(1-methyl-2-methoxyethyl)-N-(2-ethyl-6-methylphenyl)acetamide, is a highly selective It is a special herbicide for paddy fields, which is safe for paddy rice and has a wide herbicide spectrum. During the germination process of weed seeds, the roots have poor absorption of chemicals, so they can only be used as pre-emergence soil treatment. [0003] Penoxsulam is a post-emergence herbicide developed by Tao Nongke Company of the United States. It is a triazolopyrimidine sulfonamide herbicide and works by inhibiting acetolactate synthase. On September 24, 2004, it was officially registered in the EPA of the United States. It was promoted and applied in the rice fields of the sout...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/22A01N47/36A01N43/90A01P13/00
CPCA01N37/22A01N47/36A01N43/90
Inventor 王铭张彩赵守明王慧君谢印贤
Owner SHANDONG DEHAO CHEM
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