CN111066801A - Dispersible oil suspending agent containing topramezone and pyraclonil and preparation method and application thereof - Google Patents
Dispersible oil suspending agent containing topramezone and pyraclonil and preparation method and application thereof Download PDFInfo
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- CN111066801A CN111066801A CN201911052538.6A CN201911052538A CN111066801A CN 111066801 A CN111066801 A CN 111066801A CN 201911052538 A CN201911052538 A CN 201911052538A CN 111066801 A CN111066801 A CN 111066801A
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- pyraclonil
- topramezone
- oil
- dispersible oil
- polyoxyethylene ether
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
-
- 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
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention belongs to the field of herbicides, and particularly relates to a dispersible oil suspending agent containing topramezone and pyraclonil, which comprises, by weight, 1-4% of topramezone, 5-20% of pyraclonil, 10-15% of an emulsifier, 1-3% of a dispersant, 1-3% of a wetting agent, 1-3% of a thickener, 0.1-5% of a stabilizer, and the balance vegetable oil. The invention has the beneficial effects that: 1. the weeding effect is excellent, and gramineous weeds and broadleaf weeds in the paddy fields can be effectively prevented and killed off by applying the weeding composition once; 2. the topramezone and the pyraclonil have obvious synergistic effect, the reasonable compounding of the topramezone and the pyraclonil can expand the weed control spectrum and delay the drug resistance of weeds, and particularly when the compounding ratio is 1:8, the control efficiency on gramineous weeds reaches 97.80 percent, and the control efficiency on broadleaf weeds reaches 96.28 percent.
Description
Technical Field
The invention belongs to the field of herbicides, and particularly relates to a dispersible oil suspending agent containing topramezone and pyraclonil, and a preparation method and application thereof.
Background
The dispersible oil suspending agent uses vegetable oil as a dispersion medium, has the advantages of good dispersibility, good adhesiveness, stable performance, good permeability and the like, and is resistant to rain wash, so that the utilization rate of pesticides is improved, the using amount of effective components can be reduced, the environment-friendly effect is realized, and the cost is saved.
Topramezone (Topramezon) is the first benzyl ester pyrazolone herbicide developed by basf, belongs to an inhibitor of p-hydroxyphenylpyruvate dioxygenase (HPPD), has good control effect on weeds resistant to glyphosate, triazine, acetolactate synthase (ALS) inhibitor and acetyl coenzyme A carboxylase (ACCase) inhibitor, and can control main gramineous weeds and broadleaf weeds on corn crops worldwide.
Pyraclonil (Pyraclonil) is a herbicide for paddy fields, a novel structural compound with pyrazolopyridine ring found by Bayer in Germany. It has high activity to barnyard grass and the annual broad-range weeds such as Iris lactuca pall, boea virginiana, broad-leaved weed plantago asiatica, field lettuce and wild arrowhead and water chestnut for many years. The agent belongs to protoporphyrinogen oxidase (PPO) inhibitor, and is mainly absorbed through the root and leaf base of weeds. The herbicide also has good effect on some weeds with resistance to sulfonylurea herbicides.
The single herbicide is easy to generate drug resistance or has a limited control spectrum when used, and the harm of the weeds in the farmland in the actual production cannot be well solved.
Disclosure of Invention
In order to solve the problems, the invention provides the dispersible oil suspending agent containing the topramezone and the pyraclonil, which has the advantages of reasonable components, obvious synergistic effect, good weeding effect, low medication cost, safety to crops and capability of effectively preventing and removing gramineous and broadleaf weeds.
The invention provides the following technical scheme:
a dispersible oil suspending agent containing topramezone and pyraclonil comprises, by weight, 1-4% of topramezone, 5-20% of pyraclonil, 10-15% of an emulsifier, 1-3% of a dispersant, 1-3% of a wetting agent, 1-3% of a thickener, 0.1-5% of a stabilizer and the balance vegetable oil.
Preferably, the emulsifier is selected from one or more of polyoxyethylene polyoxypropylene block copolymer, fatty alcohol polyoxyethylene ether, polyoxyethylene alkyl ester, alkylphenol polyoxyethylene ether, sorbitol polyoxyethylene ether, sorbitan polyoxyethylene ether, alkylphenol formaldehyde condensate polyoxyethylene ether, sorbitol monooleate, fatty alcohol and ethylene oxide condensate, alkylbenzene sulfonate and fatty alcohol polyoxyethylene ether sodium sulfosuccinate.
Preferably, the dispersant is selected from any one or more of polymer grafted lignosulfonate, polycarboxylate, rosin grafted polymer carboxylate, alkyl naphthalene sulfonate formaldehyde condensate, succinate and oleic acid methyl amino ethyl sulfonate.
Preferably, the wetting agent is selected from one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethyl phenol polyoxyethylene ether phosphate, alkyl sulfate and alkyl sulfonate.
Preferably, the thickener is selected from any one or more of fumed silica, polyvinyl alcohol, organic bentonite, xanthan gum, magnesium aluminum silicate and carboxymethyl cellulose.
Preferably, the stabilizer is selected from any one or more of epichlorohydrin, tributyl phosphate, triphenyl phosphite, sodium benzoate, epoxidized soybean oil and butyl hydroxy anisole.
Preferably, the vegetable oil is one or more of soybean oil, rapeseed oil, cottonseed oil, palm oil, linseed oil, turpentine oil, corn oil and methyl oleate.
Preferably, the composition comprises 2% of topramezone, 16% of pyraclonil, 6% of polyoxyethylene polyoxypropylene block copolymer, 2% of high-molecular grafted lignosulfonate, 6% of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 2% of fumed silica, 1% of triphenyl phosphite and the balance of corn oil in percentage by weight.
The invention also provides a preparation method of the dispersible oil suspending agent, which comprises the steps of taking the topramezone and the pyraclonil according to the weight percentage, then uniformly mixing the topramezone and the pyraclonil with the dispersing agent, the emulsifying agent, the wetting agent, the thickening agent, the stabilizing agent and the vegetable oil, carrying out shearing dispersion for 20-30 minutes, and carrying out three-stage sanding until the particle size of 90% of particles is less than 3 mu m, thus obtaining the dispersible oil suspending agent for the herbicide.
The invention also provides application of the dispersible oil suspending agent in preventing and controlling weeds in paddy fields.
The invention has the beneficial effects that:
1. the weeding effect is excellent, and gramineous weeds and broadleaf weeds in the paddy fields can be effectively prevented and killed off by applying the weeding composition once;
2. the weeding composition has obvious synergistic effect, the weeding action mechanisms of the topramezone and the pyraclonil are different, experiments show that the reasonable combination of the topramezone and the pyraclonil can expand the weeding spectrum and delay the drug resistance of weeds, and the weeding composition also has obvious synergistic effect, especially when the combination ratio is 1:8, the synergistic effect is most obvious.
3. The effective components are prepared into a dispersible oil suspending agent, the capability of the liquid medicine for penetrating a wax layer and a cuticle of a leaf surface can be improved by using an oil dispersing medium and adding an auxiliary agent suitable for an oil-based system, so that the liquid medicine can enter tissues in the leaf more smoothly, and the oil-based system is favorable for improving the deposition capability, the rain wash resistance and the transpiration resistance of the liquid medicine.
4. The conventional topramezone preparation is influenced by various factors to be decomposed, so that the activity is reduced, and the drug effect is finally influenced. By adding a proper stabilizer, the problems that topramezone is extremely easy to decompose and the color becomes dark in an oily dispersion medium system can be effectively solved. The relative decomposition rate of the topramezone can be ensured to be below 5 percent in a heat storage stability test.
Detailed Description
Example 1
A dispersible oil suspending agent containing topramezone and pyraclonil comprises, by weight, 1% of topramezone, 6% of pyraclonil, 7% of alkylphenol polyoxyethylene, 2% of rosin grafted polymer carboxylate, 5% of alkylphenol polyoxyethylene phosphate, 1.6% of organic bentonite, 1% of epoxidized soybean oil and the balance soybean oil.
Example 2
A dispersible oil suspending agent containing topramezone and pyraclonil comprises, by weight, 2% of topramezone, 16% of pyraclonil, 6% of polyoxyethylene polyoxypropylene block copolymer, 2% of high-molecular graft lignosulfonate, 6% of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 2% of fumed silica, 1% of triphenyl phosphite and the balance corn oil.
Example 3
A dispersible oil suspending agent containing topramezone and pyraclonil comprises, by weight, 2% of topramezone, 20% of pyraclonil, 8% of alkylphenol formaldehyde condensate polyoxyethylene ether, 2% of succinate, 5% of alkyl sulfate, 3% of polyvinyl alcohol, 0.3% of sodium benzoate and the balance methyl oleate.
Example 4
A dispersible oil suspending agent containing topramezone and pyraclonil comprises, by weight, 3% of topramezone, 18% of pyraclonil, 6% of sorbitol monooleate, 2% of oleic acid methyl amino ethyl sulfonate, 8% of alkyl sulfonate, 3% of carboxymethyl cellulose, 1% of butyl hydroxy anisole and the balance of turpentine.
The dispersible oil suspending agents of examples 1-4 were obtained by the preparation method of the present invention.
The field efficacy plot test method is adopted to verify the control effect of the dispersible oil suspending agent in the examples 1-4 on gramineous weeds and broadleaf weeds in paddy fields when the dispersible oil suspending agent is applied in the fields.
Field pesticide effect test for preventing and controlling weeds in paddy field by compounding topramezone and pyraclonil
Test agents: dispersible oil suspending agent in examples 1 to 4
Control agent 1: 30% topramezone suspending agent
Control agent 2: 10% pyraclonil suspension; .
Artificial weeding and clear water control treatment (CK) are set.
The using method comprises the following steps: adding 30 liters of water per mu, and uniformly spraying the stem leaves in each cell. The experimental cells were arranged in random blocks, each treatment was repeated four times.
The application time is as follows: spraying stem leaves for 1 time in the 5-7 leaf stage of rice and the 1-3 leaf stage of field weeds in 7 months and 20 days in 2017.
The application site is as follows: fengyang county of Anhui province
Investigation method and drug effect calculation
The weed subjects were investigated as: weeds such as barnyard grass, moleplant seed, large crabgrass, monochoria vaginalis, eleusine indica, feltwort and the like are investigated, and the weed control effect is realized 15 days and 40 days after investigation, and the fresh weight control effect is realized 40 days.
TABLE 1 field efficacy of topramezone and pyraclonil combinations
The field pesticide effect test result shows that the single use of the pyraclonil has good control effect on the gramineous weeds such as barnyard grass and the like, slightly poor control effect on part of broadleaf weeds, and the topramezone has better control effect on the broadleaf weeds and part of the gramineous weeds. The preparations in examples 1 to 4 are all dispersible oil suspending agents, vegetable oil is used as a dispersing medium, raw materials are widely available and are renewable resources, so that the preparations are more environment-friendly, and have excellent spreading permeability and excellent rain erosion resistance, and the synergistic effect is obvious. The field effect shows that the control effect of the dispersible oil suspending agent in the examples 1-4 on the grassy weeds and the broadleaf weeds is obviously better than that of the control agents 1 and 2. Visual inspection shows that the treated crops grow normally, and obvious phytotoxicity is not generated in rice plants, which indicates that the treated crops are safe for the tested rice varieties.
When the compounding ratio of the topramezone to the pyraclonil is 1:8 (example 2), the dispersible oil suspending agent shows unexpected excellent control effect on the weeds in the paddy field, wherein the control efficiency on the grassy weeds reaches 97.80%, and the control efficiency on the broadleaf weeds reaches 96.28%. The topramezone is a p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor, is absorbed by leaves, roots and seedlings, is transported to meristems, and inhibits the generation of HPPD, so that the synthesis of plastoquinone is interfered, the synthesis of carotenoid is inhibited, and finally, the synthesis of chlorophyll is inhibited, which is represented by albino death of germinated weeds; pyraclonil is an inhibitor of protoporphyrinogen oxidase (PPO), which can catalyze oxidation of protoporphyrinogen IX to protoporphyrin IX, which further generates chlorophyll under the action of magnesium chelatase, and when PPO activity is inhibited, synthesis of chlorophyll in weeds is hindered, resulting in death of weeds. After the topramezone and the pyraclonil are compounded according to a certain proportion, particularly 1:8, the topramezone and the pyraclonil can jointly inhibit the synthesis of chlorophyll of weeds in different ways, so that the synergistic effect on weed control is shown. The composition has obviously improved weed control effect compared with a single dose, thereby reducing the using dose of the pesticide, reducing the application times, reducing the application cost and reducing the adverse effect of the pesticide on the ecological environment.
Table 218% topramezone-pyraclonil dispersible oil suspending agent stability test result
The test results show that the addition of epoxidized soybean oil, triphenyl phosphite and butyl hydroxy anisole as stabilizers into the 18% topramezone-pyraclonil (2+16) dispersible oil suspending agent can improve the stability of topramezone in the thermal storage process. When these three types of stabilizers are added at 1%, the stabilizing effect is optimal.
In conclusion, the dispersible oil suspension containing topramezone and pyraclonil is mainly used for preventing and removing broadleaf weeds and gramineae weeds in paddy fields, is safe to target crops, and has the obvious advantages of wide weed control spectrum, strong rain erosion resistance, obvious synergistic effect, small using amount of effective components, longer lasting period, delay of the generation of drug resistance of weeds and the like compared with a single agent. The addition of the stabilizer can obviously improve the heat storage stability of the topramezone. The research, development and popularization of the invention have great social significance and environmental protection significance.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The dispersible oil suspending agent containing topramezone and pyraclonil is characterized by comprising, by weight, 1-4% of topramezone, 5-20% of pyraclonil, 10-15% of an emulsifier, 1-3% of a dispersant, 1-3% of a wetting agent, 1-3% of a thickener, 0.1-5% of a stabilizer and the balance vegetable oil.
2. The dispersible oil suspension concentrate containing topramezone and pyraclonil as claimed in claim 1, wherein the emulsifier is selected from one or more of polyoxyethylene polyoxypropylene block copolymer, fatty alcohol polyoxyethylene ether, polyoxyethylene alkyl ester, alkylphenol polyoxyethylene ether, sorbitol polyoxyethylene ether, sorbitan polyoxyethylene ether, polyoxyethylene alkylphenol formaldehyde condensate, sorbitol monooleate, fatty alcohol and ethylene oxide condensate, alkylbenzene sulfonate, and sodium fatty alcohol polyoxyethylene ether sulfosuccinate.
3. The dispersible oil suspension concentrate containing topramezone and pyraclonil according to claim 2, wherein the dispersant is selected from one or more of polymer grafted lignosulfonate, polycarboxylate, rosin grafted polycarboxylate, alkyl naphthalene sulfonate formaldehyde condensate, succinate and oleic acid methyl amino ethyl sulfonate.
4. The dispersible oil suspension concentrate containing topramezone and pyraclonil as claimed in claim 3, wherein the wetting agent is selected from one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate and alkyl sulfonate.
5. The dispersible oil suspension concentrate containing topramezone and pyraclonil as claimed in claim 4, wherein the thickener is selected from one or more of fumed silica, polyvinyl alcohol, organic bentonite, xanthan gum, magnesium aluminum silicate and carboxymethyl cellulose.
6. The dispersible oil suspension concentrate containing topramezone and pyraclonil as claimed in claim 5, wherein the stabilizer is one or more selected from epichlorohydrin, tributyl phosphate, triphenyl phosphite, sodium benzoate, epoxidized soybean oil and butyl hydroxy anisole.
7. The dispersible oil suspension concentrate of claim 6 wherein the vegetable oil is any one or more of soybean oil, rapeseed oil, cottonseed oil, palm oil, linseed oil, turpentine, corn oil, methyl oleate.
8. The dispersible oil suspension concentrate containing topramezone and pyraclonil according to claim 7, wherein the dispersible oil suspension concentrate comprises, by weight, 2% of topramezone, 16% of pyraclonil, 6% of polyoxyethylene polyoxypropylene block copolymer, 2% of high-molecular graft lignosulfonate, 6% of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 2% of fumed silica, 1% of triphenyl phosphite, and the balance corn oil.
9. The preparation method of the dispersible oil suspending agent as claimed in claim 1, characterized in that the dispersible oil suspending agent is prepared by taking the topramezone and the pyraclonil according to the weight percentage, then evenly mixing the topramezone and the pyraclonil with the dispersing agent, the emulsifier, the wetting agent, the thickener, the stabilizer and the vegetable oil, and dispersing material particles to 90% with the particle size less than 3 μm after shearing and dispersing.
10. Use of the dispersible oil suspension agent of claim 1 for controlling weeds in paddy fields.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052538.6A CN111066801A (en) | 2019-10-31 | 2019-10-31 | Dispersible oil suspending agent containing topramezone and pyraclonil and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911052538.6A CN111066801A (en) | 2019-10-31 | 2019-10-31 | Dispersible oil suspending agent containing topramezone and pyraclonil and preparation method and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052946A (en) * | 2015-07-27 | 2015-11-18 | 河南远见农业科技有限公司 | Weeding composition containing carfentrazone-ethyl and topramezone |
| CN106489934A (en) * | 2016-11-14 | 2017-03-15 | 安徽科技学院 | A kind of dispersible oil-suspending agent containing furans sulphur humulone and bispyribac-sodium |
| CN109042690A (en) * | 2018-08-22 | 2018-12-21 | 安徽省银山药业有限公司 | Oil-suspending agent and its application can be dispersed in a kind of topramezone |
-
2019
- 2019-10-31 CN CN201911052538.6A patent/CN111066801A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052946A (en) * | 2015-07-27 | 2015-11-18 | 河南远见农业科技有限公司 | Weeding composition containing carfentrazone-ethyl and topramezone |
| CN106489934A (en) * | 2016-11-14 | 2017-03-15 | 安徽科技学院 | A kind of dispersible oil-suspending agent containing furans sulphur humulone and bispyribac-sodium |
| CN109042690A (en) * | 2018-08-22 | 2018-12-21 | 安徽省银山药业有限公司 | Oil-suspending agent and its application can be dispersed in a kind of topramezone |
Non-Patent Citations (1)
| Title |
|---|
| 伏荣桃等: ""四川地区水稻旱直播田除草剂筛选试验"", 《农学学报》 * |
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