# US 10,499,643 B2 · Synergistic herbicidal composition and the method of controlling the growth of undesired plants

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- Number: US 10,499,643 B2
- Document ID: US10499643B2
- Status: Granted
- Kind: B2
- Application number: 16/065,683
- Filed: 2017-02-03
- Published: 2019-01-03
- Granted: 2019-12-10
- Earliest claimed: 2016-01-29
- Assignees: Jiangsu Rotam Chemistry Co., Ltd
- Applicants: Jiangsu Rotam Chemistry Co., Ltd
- Inventors: James Timothy Bristow
- Web page: https://patentgrep.com/patent/US10499643B2

## CPC

- A01N 43/80: five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
- A01N 47/36: containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

A synergistic herbicidal composition comprising Pyroxasulfone and Thifensulfuron methyl as the active components, as well as the use of the synergistic herbicidal composition for controlling the growth of undesirable plants is provided. A method of controlling the growth of undesirable plants, which comprises applying the active components Pyroxasulfone and Thifensulfuron methyl of the synergistic herbicidal composition to the undesirable plants or their growing locus jointly or separately is also provided. A method of reducing or preventing harm caused by Pyroxasulfone when applied to plants, seeds or other reproductive parts of useful crops is also provided.

## Claims

### Claim 1

A herbicidal composition comprising a synergistically effective amount of Pyroxasulfone and Thifensulfuron methyl as the active components, wherein the weight ratio of Pyroxasulfone and Thifensulfuron methyl ranges from 5:1 to 1:5.

### Claim 2 (depends on 1)

The herbicidal composition of claim 1, further comprising a surfactant and/or filler.

### Claim 3 (depends on 2)

The herbicidal composition of claim 2, wherein said active components of Pyroxasulfone and Thifensulfuron methyl is present in the herbicidal composition in an amount of 5% to 90% by weight, based on the total weight of the composition.

### Claim 4 (depends on 2)

The herbicidal composition of claim 2, wherein said active components of Pyroxasulfone and Thifensulfuron methyl is present in the herbicidal composition in an amount of 10% to 80% by weight, based on the total weight of the composition.

### Claim 5 (depends on 2)

The herbicidal composition of claim 2, wherein said active components of Pyroxasulfone and Thifensulfuron methyl is present in the herbicidal composition in an amount of 20% to 60% by weight, based on the total weight of the composition.

### Claim 6 (depends on 1)

The herbicidal composition of claim 1, wherein the composition is provided as a formulation selected from a wettable powder (WP), an emulsifiable concentrate (EC), a suspension concentrate (SC), a capsule suspension (CS), a micro-emulsion (ME), an oil-in-water emulsion (EW), suspoemulsion (SE), water dispersible granules (WDG), an aqueous solution (AS), a capsule suspension (CS) and an ultra-low volume liquid (ULV).

### Claim 7 (depends on 1)

A method of controlling the growth of undesirable plants comprising applying the herbicidal composition of claim 1 to the undesirable plants or their growing locus.

### Claim 8 (depends on 1)

A method of eliminating the growth of undesirable plants comprising applying the herbicidal composition of claim 1 to the undesirable plants or their growing locus.

### Claim 9 (depends on 7)

The method of claim 7, wherein the undesirable plants are selected from broadleaf weeds, sedge weeds and gramineous weeds.

### Claim 10 (depends on 1)

A method of controlling the growth of undesirable plants, comprising applying a herbicidal effective amount of the herbicidal composition of claim 1 to the undesirable plants or their growing locus (i) before germination of the undesirable plant (pre-emergence); (ii) after germination of the undesirable plant (post-emergence), or (iii) (i) and (ii).

### Claim 11 (depends on 1)

A method of controlling the growth of undesirable plants, comprising applying the active components Pyroxasulfone and Thifensulfuron methyl of the herbicidal composition of claim 1 to the undesirable plants or their growing locus jointly or separately.

### Claim 12 (depends on 1)

A method to control the growth of undesirable plants, comprising applying the herbicidal composition of claim 1 in the presence of plants, seeds or other reproductive parts of useful crops.

### Claim 13 (depends on 1)

A method of reducing or preventing harm from Pyroxasulfone when applied to plants, seeds or other reproductive parts of useful crops, comprising applying Pyroxasulfone in the herbicidal composition according to claim 1 on the plants, seeds or other reproductive parts of the useful crops.