Herbicide composition containing pyroxasulfone, thifensulfuron methyl and flufenacet

Abstract

The invention relates to the field of herbicides, in particular to a herbicide composition containing pyroxasulfone, thifensulfuron methyl and flufenacet, which is used for solving the problem that the combined action of pyroxasulfone, thifensulfuron methyl and flufenacet is not reported at present. The herbicide composition is prepared by reasonably compounding pyroxasulfone, thifensulfuron methyl and flufenacet, then the herbicide composition is applied to weeds, the herbicide composition is absorbed by the weeds, and the herbicide composition controls the weeds by utilizing three weed control mechanisms of pyroxasulfone, thifensulfuron methyl and flufenacet. Compared with the prior art, the weeding composition has the advantages that the weeding effect is improved, the application amount of pyroxasulfone, thifensulfuron methyl and flufenacet can be reduced, the generation of drug resistance of weeds to the weeding composition is retarded, and the purpose of efficient and long-acting prevention and control is achieved.

Description

Technical Field

[0001] This invention relates to the field of herbicides, and more specifically to herbicide compositions containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam. Background Technology

[0002] Sulfonazole is a herbicide belonging to the class of long-chain fatty acid elongation synthase inhibitors. After application, sulfonazole is absorbed by the young roots or shoots of weeds and inhibits the biosynthesis of long-chain fatty acid elongation synthase, which mainly breaks down carbon chains in plant chloroplasts. 16 Or C 18 It contains fatty acids or unsaturated long-chain fatty acids, which synthesize essential plant growth substances such as nervonic acid and myristic acid, thereby inhibiting early seedling growth, destroying meristems and coleoptiles, and thus exerting its medicinal effect.

[0003] Thiophanate-sulfuron belongs to the sulfonylurea herbicide class and is an acetolactate synthase inhibitor. It inhibits the biosynthesis of valine, leucine, and isoleucine, thereby preventing cell division. Sensitive weeds stop growing rapidly after being treated with the herbicide and eventually die.

[0004] Fluthiamethoxam belongs to the aryloxyacetamide class of compounds. It is an inhibitor of cell division and cell growth. By inhibiting fatty acid metabolism, it suppresses cell division and growth, causing weeds to stop growing and gradually die.

[0005] While sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam can all effectively control weeds when used alone, their weed control spectrum is limited due to crop safety concerns. Long-term use can easily lead to weed resistance and environmental pollution. Studies have found that combining herbicides can improve weed control, broaden the weed control spectrum, reduce phytotoxicity, and delay resistance development. However, there are currently no reports on the combined effects of sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam.

[0006] The key to this invention is to verify that the herbicide composition formed by the combination of sulfopyrazosulfuron, thifensulfuron-methyl, and fluthiamethoxam can improve the weed control effect, broaden the weed control spectrum, reduce phytotoxicity, and delay resistance. Summary of the Invention

[0007] To overcome the above-mentioned technical problems, the present invention aims to provide a herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam: by rationally compounding sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam, a herbicide composition is prepared, and then the herbicide composition is applied to weeds, thus solving the problem that the combined effect of sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam has not been reported.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] A herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam, comprising the following components in the indicated weight ratios:

[0010] Sulfonazole 10-14%, thifensulfuron 1-3%, fluthiamethoxam 11-21%, with the remainder being excipients.

[0011] As a further aspect of the present invention: the excipients comprise the following components in the indicated weight ratios:

[0012] Additives: 8.5-19.5%, the remainder is solvent.

[0013] As a further aspect of the present invention: the auxiliary agent comprises the following components in the indicated weight ratios:

[0014] Fatty alcohol polyoxyethylene ether 1-5%, styrene-based phenol polyoxyethylene ether 4-7%, calcium lignosulfonate 1.5-3.5%, gum arabic 2-4%.

[0015] As a further aspect of the present invention, the solvent is one of methyl oleate, ethyl acetate, and vegetable oil.

[0016] As a further aspect of the present invention, the herbicide composition is in the form of an oil suspension.

[0017] As a further aspect of the present invention, the dosage of the herbicide composition is 60-80 mL / mu.

[0018] As a further aspect of the present invention: the herbicide composition is used for controlling weeds in wheat fields.

[0019] As a further aspect of the present invention: the weeds are annual and perennial dicotyledonous weeds and monocotyledonous weeds.

[0020] As a further aspect of the present invention: the weeds include Artemisia annua, Galium aparine, Stellaria media, Capsella bursa-pastoris, Scutellaria barbata, Scutellaria barbata, Ephedra sinica, and Euphorbia helioscopia.

[0021] As a further aspect of the present invention, the preparation method of the herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam is as follows:

[0022] Step 1: Weigh out the following ingredients according to the weight ratio: 12% sulfonylpyrazole, 2% thifensulfuron, 16% fluthiamethoxam, 1-5% fatty alcohol polyoxyethylene ether, 4-7% styrene-phenol polyoxyethylene ether, 1.5-3.5% calcium lignosulfonate, and 2-4% gum arabic. Make up the remainder to 100% with solvent.

[0023] Step 2: Add sulfonylpyrazole, thifensulfuron, fluthiamethoxam, fatty alcohol polyoxyethylene ether, styrene-based phenol polyoxyethylene ether, calcium lignosulfonate, gum arabic, and solvent to a shear mill and shear for 30-50 minutes at a shear rate of 1500-2000 r / min. Then, ball mill the mixture and pass it through a 400-500 mesh sieve to obtain a herbicide composition containing sulfonylpyrazole, thifensulfuron, and fluthiamethoxam in the form of an oil suspension.

[0024] The beneficial effects of this invention are:

[0025] The herbicide composition of the present invention, containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam, is prepared by rationally compounding sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam. The herbicide composition is then applied to weeds in wheat fields. After application, the herbicide composition is absorbed by the weeds. Sulfonylpyrazole in the herbicide composition is absorbed by the young roots or shoots of the weeds, inhibiting the biosynthesis of ultra-long chain fatty acid elongation synthases, thereby inhibiting early seedling growth and destroying meristems and coleoptiles to exert its efficacy. Thiifensulfuron-methyl in the herbicide composition inhibits the biosynthesis of valine, leucine, and isoleucine, preventing cell... The herbicide composition inhibits the growth of sensitive weeds, causing them to rapidly stop growing and eventually die. Fluthiamethoxam in the herbicide composition inhibits fatty acid metabolism, thereby suppressing cell division and growth, leading to the cessation of weed growth and eventual death. Therefore, the herbicide composition utilizes the three weed control mechanisms of sulfopyrazosulfuron, thifensulfuron-methyl, and fluthiamethoxam to control weeds. It has good control effects on weeds such as shepherd's purse, cleavers, chickweed, shepherd's purse, sedge, sedge, goosegrass, and euphorbia helioscopia. Moreover, it can reduce the application rate of sulfopyrazosulfuron-methyl, thifensulfuron-methyl, and fluthiamethoxam, slowing down the development of weed resistance to the herbicide composition and achieving the goal of efficient and long-lasting control. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1:

[0028] This embodiment describes a method for preparing a herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam:

[0029] Step 1: Weigh out 10% sulfonylpyrazole, 1% thifensulfuron, 11% fluthiamethoxam, 1% fatty alcohol polyoxyethylene ether, 4% styrene-phenol polyoxyethylene ether, 1.5% calcium lignosulfonate, and 2% gum arabic according to the weight ratio. Make up the remainder to 100% with methyl oleate.

[0030] Step 2: Add sulfonylpyrazole, thifensulfuron, fluthiamethoxam, fatty alcohol polyoxyethylene ether, styrene-based phenol polyoxyethylene ether, calcium lignosulfonate, gum arabic, and methyl oleate to a shear mill and shear for 30 minutes at a shear rate of 1500 r / min. Then, ball mill the mixture and pass it through a 400-mesh sieve to obtain a herbicide composition containing sulfonylpyrazole, thifensulfuron, and fluthiamethoxam in the form of an oil suspension.

[0031] Example 2:

[0032] This embodiment describes a method for preparing a herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam:

[0033] Step 1: Weigh out the following ingredients according to the weight ratio: 14% sulfonylpyrazole, 3% thifensulfuron, 21% fluthiamethoxam, 2% fatty alcohol polyoxyethylene ether, 5% styrene-based phenol polyoxyethylene ether, 2.0% calcium lignosulfonate, and 2.5% gum arabic. Make up the remainder to 100% with methyl oleate.

[0034] Step 2: Add sulfonylpyrazole, thifensulfuron, fluthiamethoxam, fatty alcohol polyoxyethylene ether, styrene-based phenol polyoxyethylene ether, calcium lignosulfonate, gum arabic, and methyl oleate to a shear mill and shear for 35 minutes at a shear rate of 1600 r / min. Then, ball mill the mixture and pass it through a 450-mesh sieve to obtain a herbicide composition containing sulfonylpyrazole, thifensulfuron, and fluthiamethoxam in the form of an oil suspension.

[0035] Example 3:

[0036] This embodiment describes a method for preparing a herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam:

[0037] Step 1: Weigh out the following ingredients according to the weight ratio: 12% sulfonylpyrazole, 2% thifensulfuron, 16% fluthiamethoxam, 4% fatty alcohol polyoxyethylene ether, 6% styrene-phenol polyoxyethylene ether, 3.0% calcium lignosulfonate, and 3.5% gum arabic. Make up the remainder to 100% with ethyl acetate.

[0038] Step 2: Add sulfonylpyrazole, thifensulfuron, fluthiamethoxam, fatty alcohol polyoxyethylene ether, styrene-based phenol polyoxyethylene ether, calcium lignosulfonate, gum arabic, and ethyl acetate to a shear mill and shear for 40 minutes at a shear rate of 1800 r / min. Then, ball mill the mixture and pass it through a 475-mesh sieve to obtain a herbicide composition containing sulfonylpyrazole, thifensulfuron, and fluthiamethoxam in the form of an oil suspension.

[0039] Example 4:

[0040] This embodiment describes a method for preparing a herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam:

[0041] Step 1: Weigh out the following ingredients according to the weight ratio: 12% sulfonylpyrazole, 2% thifensulfuron, 16% fluthiamethoxam, 5% fatty alcohol polyoxyethylene ether, 7% styrene-based phenol polyoxyethylene ether, 3.5% calcium lignosulfonate, and 4% gum arabic. Make up the remainder with vegetable oil to 100%.

[0042] Step 2: Add sulfonylpyrazole, thifensulfuron, fluthiamethoxam, fatty alcohol polyoxyethylene ether, styrene-based phenol polyoxyethylene ether, calcium lignosulfonate, gum arabic, and vegetable oil to a shearing machine and shear for 50 minutes at a shearing rate of 2000 r / min. Then, ball mill the mixture and pass it through a 500-mesh sieve to obtain a herbicide composition containing sulfonylpyrazole, thifensulfuron, and fluthiamethoxam in the form of an oil suspension.

[0043] Comparative Example 1:

[0044] The difference between Comparative Example 1 and Example 4 is that Comparative Example 1 contains only sulfopyrazine;

[0045] Comparative Example 2:

[0046] The difference between Comparative Example 2 and Example 4 is that Comparative Example 2 contains only thifensulfuron;

[0047] Comparative Example 3:

[0048] The difference between Comparative Example 3 and Example 4 is that it contains only fluthiamethoxam.

[0049] Comparative Example 4:

[0050] The difference between Comparative Example 4 and Example 4 is that no fluthiamethoxam was added;

[0051] Comparative Example 5:

[0052] The difference between Comparative Example 5 and Example 4 is that thifensulfuron-methyl was not added;

[0053] Comparative Example 6:

[0054] The difference between Comparative Example 6 and Example 4 is that sulfopyrazine was not added.

[0055] The herbicides from Examples 1-4 and Comparative Examples 1-6 were diluted 500 times with water to form herbicides. These were applied once by foliar spraying when the weeds were at the 2-4 leaf stage. The effective substance in the herbicide was 70 mL / acre. The herbicide efficacy was assessed 15 and 30 days after application. The results are shown in the table below.

[0056] herbicide Weed control efficacy in wheat fields 15 days after application, % Weed control efficacy in wheat fields 30 days after application, % Example 1 95.2 91.9 Example 2 96.4 93.5 Example 3 96.8 94.2 Example 4 95.6 92.3 Comparative Example 1 73.8 62.3 Comparative Example 2 72.2 60.7 Comparative Example 3 75.6 64.4 Comparative Example 4 85.1 75.0 Comparative Example 5 82.8 73.1 Comparative Example 6 87.9 76.4

[0057] Referring to the data in the table above, it can be seen that sulfonylpyrazole, thifensulfuron, and fluthiamethoxam can all control weeds when used alone, but the effect is not obvious. However, the weed control effect can be improved by combining sulfonylpyrazole, thifensulfuron, and fluthiamethoxam, and the effect of the combination of the three is better than that of the combination of two of them.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam, characterized in that, Includes the following components by weight: Sulfonazole 10-14%, thifensulfuron 1-3%, fluthiamethoxam 11-21%, with the remainder being excipients.

2. The herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam according to claim 1, characterized in that, The excipients comprise the following components in the indicated weight ratio: Additives: 8.5-19.5%, the remainder is solvent.

3. The herbicide composition containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam according to claim 2, characterized in that, The additive comprises the following components in the following weight ratio: Fatty alcohol polyoxyethylene ether 1-5%, styrene-based phenol polyoxyethylene ether 4-7%, calcium lignosulfonate 1.5-3.5%, gum arabic 2-4%.

4. The herbicide composition containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam according to claim 2, characterized in that, The solvent is one of methyl oleate, ethyl acetate, and vegetable oil.

5. The herbicide composition containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam according to claim 1, characterized in that, The herbicide composition is in the form of an oil suspension.

6. The herbicide composition containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam according to claim 1, characterized in that, The dosage of the herbicide composition is 60-80 mL / mu.

7. The herbicide composition containing sulfonylpyrazole, thifensulfuron-methyl, and fluthiamethoxam according to claim 1, characterized in that, The herbicide composition is used for controlling weeds in wheat fields.

8. The herbicide composition containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam according to claim 7, characterized in that, The weeds are annual and perennial dicotyledonous and monocotyledonous weeds.

9. The herbicide composition containing sulfonylpyrazol, thifensulfuron-methyl, and fluthiamethoxam according to claim 8, characterized in that, The weeds include Artemisia annua, Galium aparine, Stellaria media, Capsella bursa-pastoris, Scutellaria barbata, Scutellaria barbata, Ephedra sinica, and Euphorbia helioscopia.