CN115413668A - Weeding composition containing topramezone and glyphosate - Google Patents
Weeding composition containing topramezone and glyphosate Download PDFInfo
- Publication number
- CN115413668A CN115413668A CN202211047621.6A CN202211047621A CN115413668A CN 115413668 A CN115413668 A CN 115413668A CN 202211047621 A CN202211047621 A CN 202211047621A CN 115413668 A CN115413668 A CN 115413668A
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- CN
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- Prior art keywords
- glyphosate
- topramezone
- weeds
- herbicidal composition
- weeding
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
Abstract
The invention relates to the field of herbicides, and aims to solve the problems that the existing herbicide is limited by crop safety, has a limited weed control spectrum, and is easy to cause the generation of weed drug resistance and cause environmental pollution after being singly used for a long time, in particular to a weeding composition containing topramezone and glyphosate; the topramezone and the glyphosate are reasonably compounded to prepare the weeding composition, weeds can be killed through two different mechanisms, the generation speed of weed resistance is reduced, the weed control activity of the herbicide is greatly improved, the weeding spectrum of the compounded weeding composition is wide, the lasting period is long, the prevention and control of various gramineous weeds and broadleaf weeds can be improved, the resistance of the weeds to the herbicide can be reduced, the prevention and control effect of the resistant weeds can be improved, and the service life of the herbicide is prolonged.
Description
Technical Field
The invention relates to the field of herbicides, and in particular relates to a weeding composition containing topramezone and glyphosate.
Background
Topramezone, chemical name: 4- [3- (4, 5-dihydroisoxazol-3-yl) -2-methyl-4-methylsulfonyl]-1-methyl-5-hydroxy-1H-pyrazole; the molecular formula is as follows: c 16 H 17 N 3 O 5 S; the structural formula is as follows:
topramezone belongs to the class of p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor herbicides, the HPPD catalyzes the oxidation of p-Hydroxyphenylpyruvate (HPPA) to form Homogentisate (HGA), which is an aromatic precursor for the formation of tocopherols and plastoquinones, which are further decarboxylated, polyglutarinylated and alkylated to synthesize tocopherols and plastoquinones. This process is inhibited, meaning that tocopherols and plastoquinones responsible for the photosynthetic electron transport mission cannot be synthesized. In addition, plastoquinone is an essential cofactor for the catalytic action of phytoene desaturase during the synthesis of carotenoids, and thus the reduction of plastoquinone affects the synthesis of carotenoids. The absence of carotenoids, as a protector of light absorbers and of the photosynthetic system, leads to oxidative degradation of chlorophyll and photosynthetic membranes in plant stem tissues, eventually leading to albinism of the germinating sensitive weeds. With growth inhibition, this stressed symptom resembles chlorosis, necrotizing plant tissue, bleaching symptoms occurring within 2-5 days after treatment of sensitive target weed plants, and plant death within 14 days.
Glyphosate, chemical name: n- (phosphonomethyl) glycine; the molecular formula is as follows: c 3 H 8 NO 5 P; the structural formula is as follows:
the glyphosate inhibits the conversion of shikimic acid to aromatic amino acid by blocking 5-enol pyruvoyl shikimic acid-3-phosphate synthase (EPSPS enzyme) in plants, so that shikimic acid and other intermediate metabolites (particularly, phosphate compounds such as NADP and the like) are accumulated in the plants in large quantity, and the nitrogen metabolism disorder of the plants is promoted.
The conventional herbicide is limited by the safety of crops, has a limited weed control spectrum, is easy to cause the generation of drug resistance of weeds after being singly used for a long time, and causes pollution to the environment.
Disclosure of Invention
In order to overcome the technical problems described above, it is an object of the present invention to provide a herbicidal composition comprising topramezone and glyphosate: by reasonably compounding the topramezone and the glyphosate to prepare the weeding composition, the problems that the existing herbicide is limited by the safety of crops, has a limited weed control spectrum, and is easy to cause the drug resistance of weeds and pollute the environment after being singly used for a long time are solved.
The purpose of the invention can be realized by the following technical scheme:
a weeding composition containing topramezone and glyphosate comprises the active ingredients of topramezone and glyphosate, wherein the mass ratio of the topramezone to the glyphosate is 1-25:1-25.
As a further scheme of the invention: the mass ratio of topramezone to glyphosate is 1-15:1-5; preferably, the ratio of 5:1.
as a further scheme of the invention: the mass percentage of the active ingredients is 15-55%.
As a further scheme of the invention: the weeding composition is mixed with common auxiliary materials on pesticides to prepare any preparation suitable for agriculture.
As a further scheme of the invention: the preparation is oil suspending agent, water dispersible granule, wettable powder, granule, suspending agent and microemulsion.
As a further scheme of the invention: the common auxiliary materials comprise kaolin, attapulgite, montmorillonite, diatomite and bentonite.
As a further scheme of the invention: the application of the weeding composition containing topramezone and glyphosate in preventing and treating weeds in crop fields.
As a further scheme of the invention: the weeds are annual grassy and broadleaf weeds.
The invention has the beneficial effects that:
according to the weeding composition containing the topramezone and the glyphosate, disclosed by the invention, the topramezone and the glyphosate are reasonably compounded to prepare the weeding composition, weeds can be killed through two different mechanisms, the generation speed of weed resistance is reduced, the weed control activity of a herbicide is greatly improved, the weeding spectrum of the compounded weeding composition is wide, the lasting period is long, the prevention and control of various gramineous weeds and broadleaf weeds can be improved, the resistance of the weeds to a medicament can be reduced, the prevention and control effect of the resistant weeds is improved, and the service life of the medicament is prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
this example is an indoor activity assay for a herbicidal composition comprising topramezone and glyphosate:
according to the mass ratio of active ingredients, namely topramezone to glyphosate, of 25: 1. 20: 1. 15: 1. 10: 1. 5:1. 1: 1. 1: 5. 1: 10. 1: 15. 1: 20. 1:25, carrying out an experiment to determine the co-toxicity coefficient of the compound herbicide on common weeds in the paddy fields, namely barnyard grass.
The test method comprises the following steps: respectively sowing quantitative barnyard grass seeds in disposable paper cups of 10cm, sowing 20 seeds in each cup, covering soil of 1cm after sowing, culturing in an illumination incubator, carrying out soil spraying treatment on a crawler-type crop sprayer when the barnyard grass is in a 1-4 leaf period, continuously culturing in a greenhouse after test material treatment, regularly observing the control effect of each treatment on weeds, weighing the fresh weight of each treated weed after 30 days, and calculating the toxicity regression curve and the co-toxicity coefficient of the weed.
The co-toxicity coefficient is greater than 100, which shows that topramezone and glyphosate have synergistic effect, the co-toxicity coefficient is greater than 120, which shows that topramezone and glyphosate have significant synergistic effect, and the co-toxicity coefficient is less than 100, which shows that topramezone and glyphosate have antagonistic effect.
The results are shown in the following table:
| sample (I) | Regression curve of virulence | Co-toxicity coefficient |
| Topramezone | Y＝3.524+1.754X | / |
| Glyphosate | Y＝2.088+1.986X | / |
| Topramezone: glyphosate =25:1 | Y＝2.954+2.135X | 132.33 |
| Topramezone: glyphosate =20:1 | Y＝2.147+2.859X | 154.24 |
| Topramezone: glyphosate =15:1 | Y＝3.111+2.263X | 177.03 |
| Topramezone: glyphosate =10:1 | Y＝2.376+2.635X | 166.29 |
| Topramezone: glyphosate =5:1 | Y＝1.958+2.986X | 182.93 |
| Topramezone: glyphosate =1:1 | Y＝2.055+3.105X | 171.39 |
| Topramezone: glyphosate =1:5 | Y＝2.185+2.584X | 176.52 |
| Topramezone: glyphosate =1:10 | Y＝1.997+3.006X | 155.38 |
| Topramezone: glyphosate =1:15 | Y＝3.122+2.853X | 147.79 |
| Topramezone: glyphosate =1:20 | Y＝2.747+1.688X | 139.21 |
| Topramezone: glyphosate =1:25 | Y＝2.554+1.769X | 125.3 |
Referring to the data in the table, it can be seen that the mass ratio of topramezone to glyphosate is 1-25: when the co-toxicity coefficient is 1-25, the values are all more than 120, which shows that the topramezone and the glyphosate have obvious synergistic action, and particularly, the mass ratio of the topramezone to the glyphosate is 1-15: when the mass ratio of topramezone to glyphosate is 5: when the toxicity coefficient is 1, the maximum value of the co-toxicity coefficient is 182.93, which shows that topramezone and glyphosate have obvious synergistic action.
Example 2:
the embodiment is a water dispersible granule pesticide containing a herbicidal composition of topramezone and glyphosate, wherein the herbicidal composition of topramezone and glyphosate comprises 15 percent, 5 percent of dispersant NNO, 4 percent of ammonium sulfate, 2 percent of polyethylene glycol and kaolin, and the balance is up to 100 percent;
wherein the mass ratio of topramezone to glyphosate in the weeding composition containing topramezone and glyphosate is 1-15:1-5;
the water dispersible granule pesticide is diluted in water, and is uniformly sprayed by a knapsack sprayer, the pesticide liquid is uniformly sprayed into a test cell during spraying, so that the phenomena of leakage spraying and multiple spraying are avoided, the weed death condition is observed 30 days after the pesticide is sprayed after the test, and the weeding effects of various agents are compared.
The results are shown in the following table:
example 3:
the embodiment is a water dispersible granule pesticide of a weeding composition containing topramezone and glyphosate, wherein the weeding composition containing topramezone and glyphosate comprises 35 percent of dispersant NNO 5 percent, 4 percent of ammonium sulfate, 2 percent of polyethylene glycol and kaolin, and the balance is up to 100 percent;
wherein the weight ratio of topramezone to glyphosate in the weeding composition containing topramezone and glyphosate is 1-15:1-5;
the water dispersible granule pesticide is diluted in water, and is uniformly sprayed by a knapsack sprayer, the pesticide liquid is uniformly sprayed into a test cell during spraying, so that the phenomena of leakage spraying and multiple spraying are avoided, the weed death condition is observed 30 days after the pesticide is sprayed after the test, and the weeding effects of various agents are compared.
The results are shown in the following table:
example 4:
the embodiment is a water dispersible granule pesticide containing a herbicidal composition of topramezone and glyphosate, wherein the herbicidal composition of topramezone and glyphosate comprises 55 percent of dispersant NNO 5 percent, 4 percent of ammonium sulfate, 2 percent of polyethylene glycol and kaolin, and the balance is up to 100 percent;
wherein the weight ratio of topramezone to glyphosate in the weeding composition containing topramezone and glyphosate is 1-15:1-5;
the water dispersible granule pesticide is diluted in water, and is uniformly sprayed by a knapsack sprayer, when the pesticide is sprayed, the pesticide liquid is uniformly sprayed into a test cell, so that the phenomena of leakage spraying and excessive spraying are avoided, the weed death condition is observed 30 days after the pesticide is sprayed respectively after the test, and the weeding effects of various agents are compared.
The results are shown in the following table:
example 5:
the embodiment is a water dispersible granule pesticide of a weeding composition containing topramezone and glyphosate, wherein the topramezone or the glyphosate accounts for 15-55%, a dispersant NNO 5%, ammonium sulfate 4%, polyethylene glycol 2% and kaolin, and the balance is 100%;
the water dispersible granule pesticide is diluted in water, and is uniformly sprayed by a knapsack sprayer, the pesticide liquid is uniformly sprayed into a test cell during spraying, so that the phenomena of leakage spraying and multiple spraying are avoided, the weed death condition is observed 30 days after the pesticide is sprayed after the test, and the weeding effects of various agents are compared.
The results are shown in the following table:
the results in examples 2 to 5 show that the combination of topramezone and glyphosate has the effects of expanding the weeding spectrum and improving the weeding activity, the lasting period of the herbicide is prolonged, the broadleaf weeds and the grass weeds can be effectively controlled, the control effect is better than the control effect of the single use of topramezone and glyphosate, and the remarkable synergistic effect of the combination of topramezone and glyphosate on the control effect of the broadleaf weeds and the grass weeds is demonstrated.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (8)
1. A weeding composition containing topramezone and glyphosate is characterized in that active ingredients comprise topramezone and glyphosate, and the mass ratio of the topramezone to the glyphosate is 1-25:1-25.
2. The herbicidal composition comprising topramezone and glyphosate according to claim 1, wherein the mass ratio of topramezone to glyphosate is 1-15:1-5; preferably, the ratio of 5:1.
3. a herbicidal composition according to claim 1, comprising topramezone and glyphosate, wherein the active ingredients are present in an amount of 15 to 55% by weight.
4. A herbicidal composition comprising topramezone and glyphosate according to claim 1, wherein the herbicidal composition is formulated in any formulation suitable for agricultural use by mixing with conventional pesticidal adjuvants.
5. The herbicidal composition comprising topramezone and glyphosate according to claim 4, wherein the formulation is oil suspension, water dispersible granules, wettable powder, granules, suspending agent or microemulsion.
6. A herbicidal composition comprising topramezone and glyphosate according to claim 4, wherein the common auxiliary materials comprise kaolin, attapulgite, montmorillonite, diatomite and bentonite.
7. Use of a herbicidal composition comprising topramezone and glyphosate according to any one of claims 1 to 6 for controlling weeds in crop fields.
8. Use of a herbicidal composition comprising topramezone and glyphosate according to claim 7, wherein the weeds are annual grasses and broadleaf weeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211047621.6A CN115413668A (en) | 2022-08-30 | 2022-08-30 | Weeding composition containing topramezone and glyphosate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211047621.6A CN115413668A (en) | 2022-08-30 | 2022-08-30 | Weeding composition containing topramezone and glyphosate |
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| CN115413668A true CN115413668A (en) | 2022-12-02 |
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| CN202211047621.6A Pending CN115413668A (en) | 2022-08-30 | 2022-08-30 | Weeding composition containing topramezone and glyphosate |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305346A (en) * | 1998-06-16 | 2001-07-25 | 巴斯福股份公司 | Herbicidal mixtures having synergistic effect |
| CN102986705A (en) * | 2012-11-30 | 2013-03-27 | 王学权 | Herbicide composition containing topramezone |
| WO2018119348A1 (en) * | 2016-12-22 | 2018-06-28 | Fmc Corporation | Herbicidal combinations and methods of controlling weeds |
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2022
- 2022-08-30 CN CN202211047621.6A patent/CN115413668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305346A (en) * | 1998-06-16 | 2001-07-25 | 巴斯福股份公司 | Herbicidal mixtures having synergistic effect |
| CN102986705A (en) * | 2012-11-30 | 2013-03-27 | 王学权 | Herbicide composition containing topramezone |
| WO2018119348A1 (en) * | 2016-12-22 | 2018-06-28 | Fmc Corporation | Herbicidal combinations and methods of controlling weeds |
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