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Novel weeding composition

A herbicidal composition and a new technology, applied in the direction of herbicides, algicides, biocides, animal repellents, etc., can solve the problem of use method, dosage, operation is difficult to master, herbicide spectrum is not so comprehensive, crops It is easy to cause phytotoxicity and other problems, so as to achieve the effect of prolonging the application period, greatly increasing the herbicide spectrum and duration, and delaying herbicide resistance

Inactive Publication Date: 2014-12-10
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the above-mentioned single agents or their compound preparations have relatively poor control effects on older weeds, some are not so comprehensive on the herbicidal spectrum, and some are prone to phytotoxicity to crops if used improperly. Therefore, there are still some problems in actual application. limitations
[0006] There are many deficiencies in the single agent use of chlorpyrazosulfuron-methyl and carfentrazone. The herbicidal spectrum is not wide enough, and some weeds cannot be controlled. The cost of using a single agent is relatively high. , dosage, operation, etc. are difficult to master, which may cause wrong medication and affect crops

Method used

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Effect test

Embodiment 1

[0022] The dosage form of the novel herbicidal composition of the present embodiment is a wettable powder, which contains 10% of the active ingredients pyrazosulfuron-methyl, 14% of mefentrazone, 2% of the wetting agent sodium lauryl sulfate, and a dispersant Lignosulfonate 5%, dispersant naphthalenesulfonic acid formaldehyde condensate sodium salt 2%, white carbon black 7%, kaolin supplement.

[0023] The preparation method is as follows: effectively mix the above-mentioned ingredients in proportion, mix them uniformly in a mixing tank, and pulverize them with a jet mill until the particle size is ≤45 μm.

Embodiment 2

[0025] The dosage form of the novel herbicidal composition of the present embodiment is water-dispersible granule, and the water-dispersible granule contains 8% of the active ingredient chlorpyrazosulfuron-methyl, 10% of mefentrazone, and 3% of wetting agent alkylsulfonate, dispersed Agent alkyl naphthalene sulfonate 5%, white carbon black 10%, disintegrant ammonium sulfate 2%, defoamer silicone 0.1%, kaolin supplement.

[0026] The preparation method is as follows: mix the above formula ingredients evenly in a mixing tank, pulverize them with a jet mill, add water to moisten them, and then granulate them through an extrusion granulator. The granular mixed material is the water-dispersible granule preparation of chlorpyrazosulfuron-metazone.

Embodiment 3

[0028] The dosage form of the new herbicidal composition of this embodiment is a suspension concentrate, which contains 10% of the active ingredient chlorpyrazosulfuron-methyl, 6% of mefentrazone, and 1% of the wetting agent polyoxyethylene-polyoxypropylene block copolymer , Dispersant Alkylphenol Polyoxyethylene Phosphate 3%, Dispersant Polycarboxylate 2%, Antifreeze Agent Glycerin 4%, Thickener Xanthan Gum 0.2%, Defoamer Silicone 0.1%, Water Supplement .

[0029] The preparation method is as follows: the active ingredients chlorpyrazosulfuron-methyl, fenflumezone, wetting agent, dispersant, and part of the filler water are mixed evenly by high-speed shearing, and ball milled in a ball mill for 2-3 hours to make the particle size of all particles within 5 μm In the following, the suspension is prepared, and then the thickener, antifreeze, defoamer, and the remaining water are directly mixed into the prepared suspension through a high-speed shearing machine to obtain the s...

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Abstract

The invention discloses a novel weeding composition which is prepared from the following raw material components by weight percent: 1-20 parts of halosulfuron-methyl, 1-15 parts of carfentrazone-ethyl, 1-15 parts of wetting agent, 1-15 parts of dispersing agent, 0.1-1 part of thickening agent, 1-5 parts of antifreeze agent, 0.1-1 part of defoaming agent, 0.1-1 part of preservative, 1-10 parts of disintegrating agent and the balance of filler, wherein the weight ratio of the halosulfuron-methyl and the carfentrazone-ethyl is (6-10):(5-15). The binary compound prepared by the halosulfuron-methyl and the carfentrazone-ethyl is good in weeding effect, low in cost, safe for crop, wide in weeding spectrum and high in complementarity.

Description

technical field [0001] The invention belongs to the field of agricultural plant protection, and in particular relates to a novel herbicidal composition. Background technique [0002] Chlorosulfuron-methyl (also known as chlorpyrazosulfuron-methyl), molecular formula C 13 h 15 ClN 6 o 7 , chemical name: methyl 3-chloro-5-(4,6-dimethoxypyrimidin-2-ylaminocarbonylaminosulfonyl)-1-methylpyrazole-4-carboxylate. It belongs to the sulfonylurea herbicides and mainly controls broad-leaved weeds and sedges. Clopyrazosulfuron-methyl is an acetolactate synthase inhibitor, which is absorbed through the roots and leaves of the weeds and conducted in the plant to stop the weeds It can be used for wheat, corn, lawn, rice and other crops and non-crops. It has a wide herbicidal spectrum and high activity. It is quickly metabolized into harmless substances in crops and is safe for crops. [0003] Mefentrazone (also known as triafentrazone-ethyl), molecular formula C 15 h 14 Cl 2 f ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/36A01P13/00A01N43/653
Inventor 曹轩范伟赠陈丰喜
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI