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Ternary weeding composition for paddy rice field

A herbicidal composition and paddy field technology, applied in the direction of herbicides, algicides, biocides, animal repellents, etc., can solve the problems of poor control effect, achieve broad herbicidal spectrum, long duration, Delaying the effects of weed resistance

Inactive Publication Date: 2018-06-29
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can control weeds such as barnyardgrass, Qianjinzi, bermudagrass, special-shaped sedge, mother grass, cow felt, and Ci algae in paddy fields, but it can fight against sulfonylurea biotype weeds such as firefly, wild arrowhead, wild water chestnut and other perennials. Poor weed control

Method used

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  • Ternary weeding composition for paddy rice field
  • Ternary weeding composition for paddy rice field
  • Ternary weeding composition for paddy rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: 30% Mesotrione. Pretilachlor. Clopyrazosulfuron-methyl (2:25:3) oil suspension

[0044] Mesotrione 2%, Pretilachlor 25%, Clopyrazosulfuron 3%, Calcium Dodecyl Benzene Sulfonate 8%, Styryl Phenol Ethoxylate 7%, Castor Oil Ethoxylate 3 %, organic bentonite 3%, the balance of methyl oleate. Mix all the above-mentioned ingredients uniformly according to the stated ratio, and grind the obtained material with a horizontal sand mill so that the average particle size of the obtained material is less than 5 microns, and then 30% mesotrione. :25:3) oil suspension concentrate.

Embodiment 2

[0045] Example 2: 19.2% Mesotrione. Pretilachlor. Clopyrazosulfuron-methyl (1.5:15:2.7) wettable powder

[0046] Mesotrione 1.5%, pretilachlor 15%, chlorpyrazosulfuron 2.7%, sodium lignosulfonate 7%, sodium lauryl sulfate 2%, white carbon black 8%, and the balance of kaolin. After absorbing pretilachlor crude oil and white carbon black according to a certain ratio and standing for 24 hours, all the ingredients are mixed evenly according to the above ratio, and the average particle size of the material is less than 5 microns through jet milling. The 19.2% mesotrione-pretilachlor-chlorpyrazosulfuron-methyl (1.5:15:2.7) wettable powder can be obtained.

Embodiment 3

[0047] Example 3: 6.5% Mesotrione. Pretilachlor. Clopyrazosulfuron-methyl (0.5:5.2:0.8) Granules

[0048]Mesotrione 0.5%, Pretilachlor 5.2%, Chlorpyrazosulfuron 0.8%, Sodium Lignosulfonate 8%, Alkylphenol Polyoxyethylene Formaldehyde Condensate Sulfate 7%, White Carbon Black 8%, Kaolin margin. Weigh pretilachlor in advance according to the above ratio, absorb it with white carbon black and let it stand for 24 hours, then mix the other ingredients uniformly according to the ratio, and crush them by air flow, so that the average particle size of the material is less than 5 microns, add water and knead evenly, and move to Granulate in granulation equipment and dry to obtain 6.5% mesotrione-pretilachlor-clopyrazosulfuron-methyl (0.5:5.2:0.8) granules.

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Abstract

The invention discloses a ternary weeding composition for a paddy rice field. The ternary weeding composition is prepared from three effective components including mesotrione, pretilachlor and hingosulfuron-methyl; the mass ratio of the effective components is (1 to 5) to (10 to 50) to (1 to 5); the sum of the mass percent of the three effective components in the composition is 1 to 80 percent. The weeding composition disclosed by the invention is applicable to almost grass family weeds, broad leaf weeds and sedge family weeds and especially has a remarkable prevention effect on Yinglin (scirpus tabernaemontani), barnyard grass and sagittaria trifolia. The ternary weeding composition has the advantages of low utilization dosage, wide weeding spectrum, long lasting period and the like, canbe used for effectively delaying the drug resistance of the weeds, has an ideal weeding effect and is safe to paddy rice.

Description

technical field [0001] The invention belongs to the technical field of chemical pesticides, in particular to a three-component herbicidal composition for paddy fields. Background technique [0002] Mesotrione, also known as mesotrione, chemical name 2-(4-methylsulfonyl-2-nitro-benzoyl)cyclohexane-1,3-dione, belongs to triketone A herbicide-like herbicide, it is a pre-emergence and post-emergence broad-spectrum selective herbicide that can inhibit hydroxyphenylpyruvate dioxygenase (HPPD), and can inhibit the biosynthesis of target carotenoids, within 3-5 days after use The plant meristems appear yellowing symptoms, and the agent can be transmitted in the xylem and phloem of the plant, and has contact killing effect and persistent effect. It can effectively control broad-leaved grass and some gramineous weeds, and has a good control effect on velvetleum, amaranth, goosefoot, Polygonum, barnyardgrass, crabgrass, etc., but has a poor control effect on iron amaranth and some gra...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01N41/10A01N37/22A01P13/00
CPCA01N37/22A01N41/10A01N47/36
Inventor 徐雅飞陈丰喜范伟赠
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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