CN115316386A - Weeding composition, preparation method and application thereof - Google Patents
Weeding composition, preparation method and application thereof Download PDFInfo
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- CN115316386A CN115316386A CN202111270374.1A CN202111270374A CN115316386A CN 115316386 A CN115316386 A CN 115316386A CN 202111270374 A CN202111270374 A CN 202111270374A CN 115316386 A CN115316386 A CN 115316386A
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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
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
- A01N33/18—Nitro compounds
- A01N33/20—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group
- A01N33/22—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group having at least one oxygen or sulfur atom and at least one nitro group directly attached to the same aromatic ring system
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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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
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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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/48—Nitro-carboxylic acids; Derivatives thereof
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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
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to the technical field of pesticides, and particularly relates to a weeding composition, a preparation method and application thereof. A weeding composition comprises a component A and a component B; the component A is the pyriminobac-methyl; the component B is at least one of oxyfluorfen, fluoroglycofen-ethyl and 2, 4-D isooctyl ester; the weight ratio of the component A to the component B is 1: (1-80). According to the invention, the types and the dosages of the dispersing agent, the wetting agent, the disintegrating agent, the adhesive and the filler are screened and optimized, so that the water dispersible granule prepared from the weeding composition has stable quality and good performance, is more beneficial to the exertion of the drug effect, and simultaneously has excellent dispersibility, suspension property, disintegration property, hard water resistance and the like; the raw materials are easy to obtain, the preparation process is simple, and the industrial production is easy to realize; is used for preventing and removing weeds of orchard and row crops.
Description
Technical Field
The invention relates to the technical field of A61P, and particularly relates to a weeding composition, a preparation, and a preparation method and application thereof.
Background
Water dispersible granules are widely used due to the cleanliness of the solvent. CN202011257620 provides a herbicidal composition comprising benconazole, the dosage forms are suspending agent and dispersible oil suspending agent, however, the synergistic effect and control effect of the compound of active ingredients still need to be enhanced, and when benconazole, especially benconazole, and other raw medicinal ingredients are compounded to prepare water dispersible granules, the dispersion wettability, suspension property, stability and the like are difficult to guarantee, and the exertion of the medicinal effect is influenced. The invention provides a weeding composition with good dispersibility, good wettability, high disintegration speed, high miscibility and excellent hard water resistance; the preparation is simple, the energy consumption is low, and continuous industrial production can be realized.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides in a first aspect a herbicidal composition comprising component a, component B; the component A is the pyriminobac-methyl; the component B is at least one of oxyfluorfen, fluoroglycofen-ethyl and 2, 4-D isooctyl ester; the weight ratio of the component A to the component B is 1: (1-80).
In a preferred embodiment, when the component B is oxyfluorfen and/or fluoroglycofen-ethyl, the weight ratio of the component A to the component B is 1: (1-10).
In a preferred embodiment, when component B is 2, 4-d isooctyl ester, the weight ratio of component a to component B is 1: (10-80).
The inventor finds that after the benconazole and the oxyfluorfen/fluoroglycofen-ethyl/2, 4-D isooctyl ester are compounded for use, as the action mechanisms of the two effective components are unique and have no mutual resistance, the synergistic effect is generated, the weed control spectrum is expanded, the control effect is improved, and the defect of poor control effect of a single medicament on main weeds is overcome; the persistence of each component of the composition is improved, the generation of weed drug resistance is delayed, the times of repeated use of pesticides are reduced, and the use amount and the cost are reduced; can be mainly applied to weed control of orchard and interline crops, in particular to weed control of citrus orchard, loquat orchard, tea garden, coffee garden, papaya orchard, mulberry orchard, banana orchard, waxberry orchard, cotton and corn.
The second aspect of the invention provides a weeding composition preparation, and the dosage form of the weeding composition preparation is selected from one of missible oil, aqueous emulsion, microemulsion, dispersible oil suspending agent, wettable powder and water dispersible granules.
In a preferred embodiment, the formulation of the herbicidal composition is in the form of water dispersible granules; the raw materials for preparing the water dispersible granule at least comprise the following components in percentage by weight: 1-90% of weeding composition, 5-25% of dispersing agent, 1-15% of wetting agent, 5-50% of disintegrating agent, 1-5% of binding agent and the filler for making up 100%.
Dispersing agent
In the invention, the dispersant is at least one selected from formaldehyde condensate of alkyl naphthalene sulfonate, nekal, lignosulfonate, alkyl naphthalene sulfonate, polycarboxylate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, naphthalene sulfonic acid formaldehyde condensate sodium salt, alkylphenol polyoxyethylene ether, fatty amine polyoxyethylene ether, fatty acid polyoxyethylene ester, glycerin fatty acid ester polyoxyethylene ether, alkyl sulfate, alkyl sulfonate, naphthalene sulfonic acid formaldehyde condensate, styryl phenol polyoxyethylene ether, alkylaryl polyoxyethylene polyoxypropylene ether and alkylaryl methyl ether resin polyoxyethylene ether.
In a preferred embodiment, the dispersant is a sodium salt of a naphthalene sulfonic acid formaldehyde condensate.
In the present invention, the source of the sodium salt of the naphthalenesulfonic acid-formaldehyde condensate is not particularly limited, and kunshan sanderian biotechnology limited may be mentioned.
Wetting agent
In the invention, the wetting agent is at least one selected from sulfofatty acid methyl ester, fatty amide N-methyl taurine sodium salt, alkylphenol polyoxyethylene ether sulfate, lauric acid sulfate, dodecyl benzene sulfonate, dodecyl sulfate, dibutyl naphthalene sulfonate, saponin powder and p-methoxy fatty amide benzene sulfonate.
In a preferred embodiment, the wetting agent is a p-methoxy fatty amidobenzene sulfonate, preferably sodium p-methoxy fatty amidobenzene sulfonate.
In the present invention, the source of the sodium p-methoxyfatty amidobenzenesulfonate is not particularly limited, and Ningbo chemical materials Co.
In the invention, the weight ratio of the dispersing agent to the wetting agent is (1-5): 1.
in a more preferred embodiment, the weight ratio of dispersant to wetting agent is 3:1.
the inventor finds that after the system is compounded by sodium salt of naphthalene sulfonic acid formaldehyde condensate and sodium methoxy fatty amido benzene sulfonate, the prepared granules have the dispersibility after being dissolved in water, the suspension property is obviously improved, and the granules have excellent suspension dispersibility even if the water temperature is as low as-10 ℃ or as high as 60 ℃, so that the problems of medicine concentration reduction or nozzle blockage caused by aggregation and precipitation can be avoided; meanwhile, after the spraying agent is sprayed, effective active ingredients are easier to attach, wet and spread on the surface of an application object, and the drug effect is obviously improved. The inventors considered that the reason is that the lipophilic naphthalene nucleus and the hydrophilic sulfonic acid group of the sodium salt of the naphthalenesulfonic acid-formaldehyde condensate are adsorbed on the surface of the agricultural chemical particles by the action of van der waals force or the action of hydrogen bonds to form a strong adsorption layer and a protective barrier, and a charge or space barrier is formed around the fine particles to promote the raw chemical to be uniformly dispersed in water in a fine particulate state, thereby effectively preventing the particles from being agglomerated and settled, maintaining the dispersion of the charged particles in the aqueous solution, and maintaining the stable state of the suspension system. However, the inventor finds that in the process of dispersing the water dispersible granule in water, solid-liquid interface conversion can occur on the surface or the internal solid-gas interface of the particle, so that the particle floats on the water surface for a long time, and after a certain amount of methoxyl fatty amide benzene sulfonic acid sodium is compounded, a very good promoting effect can be achieved, and the particle can quickly complete the physical obtaining process of interface conversion and is suspended and dispersed in water; secondly, the original pesticide is usually difficult to dissolve in water or insoluble in water, the surface of a plant leaf or the epidermis of pests is provided with a hydrophobic waxy protective layer, and the original pesticide is not easy to be wetted by water and pesticide to cause difficulty in exerting the pesticide effect, and the sodium salt of the naphthalene sulfonic acid formaldehyde condensate and the sodium methoxyfatty amido benzenesulfonate are combined with the pesticide, so that the surface tension of the pesticide liquid can be effectively reduced, the stability of the pesticide suspension is promoted, and meanwhile, effective active ingredients can be more easily attached, wetted and spread on the surface of a pesticide application object, and the pesticide effect is improved.
Disintegrating agent
In the present invention, the disintegrant is not particularly limited.
In a preferred embodiment, the disintegrant is selected from at least one of ammonium sulfate, urea, sodium chloride, sodium sulfate, starch and derivatives thereof, cellulose, sodium bicarbonate.
In a more preferred embodiment, the disintegrant is a mixture of urea and sodium sulphate in the weight ratio (0.3-1.2): 1.
in a more preferred embodiment, the weight ratio of urea to sodium sulfate is 0.8:1.
binder
In the present invention, the binder is not particularly limited.
In a preferred embodiment, the binder is selected from at least one of polyvinyl alcohol, polyethylene glycol, gelatin, polyvinyl pyrrolidone, methyl cellulose, xanthan gum, guar gum, gum arabic, and saccharides.
In a more preferred embodiment, the binder is polyethylene glycol.
In a more preferred embodiment, the molecular weight of the polyvinyl alcohol is not less than 1000.
In the present invention, the source of the polyethylene glycol is not particularly limited, and dow may be mentioned.
In the invention, the weight ratio of the disintegrating agent to the binder is (7-15): 1.
in a preferred embodiment, the weight ratio of the disintegrant to binder is 10:1.
the inventor finds that the disintegrant and the binder are preferable and compounded in the research process, and simultaneously solves the problems that the addition amount of the binder is insufficient, the granulation process is prolonged, the strength of the prepared granules is insufficient, and the granules are easy to break during the operations of packaging, transportation, storage and the like; the excessive addition of the binding agent can result in the over-high strength of the produced granules, thereby causing the problems of poor disintegration and reduced suspension property of the water dispersible granules. Particularly, when the molecular weight of the polyvinyl alcohol adopted by the system is not less than 1000, the suspension stability of the water dispersible granule after being dissolved in water can be further improved.
Filler material
In the present invention, the filler is not particularly limited, and there may be mentioned talc, bentonite, activated clay, white carbon, glucose, lactose, sucrose, diatomaceous earth, starch, attapulgite, kaolin, and the like.
The second aspect of the invention provides a preparation method of the weeding composition preparation, which adopts the processing technology of mixing, crushing, remixing, granulating and sieving.
In a preferred embodiment, the preparation method of the herbicidal composition formulation comprises the following steps: coarsely crushing the weeding composition, the dispersing agent, the disintegrating agent, the wetting agent, the binder and the filler, and stirring and mixing; then carrying out ultrafine grinding by a jet mill to obtain powder with the particle size of more than 1000 meshes; and finally, adding a binder for granulation, and screening by using a vibrating screen to obtain the fertilizer.
The third aspect of the invention provides application of the weeding composition to weed control of orchard and interline crops.
Advantageous effects
The invention provides a weeding composition and a water dispersible granule containing the same, and the weeding composition has the following beneficial effects:
1. by compounding the bensulfuron methyl, the oxyfluorfen, the fluoroglycofen-ethyl and the 2, 4-D isooctyl ester, the herbicide has unique action mechanism and no mutual resistance, generates a synergistic effect, enlarges the weed control spectrum, improves the control effect and makes up for the defect of poor control effect of a single medicament on main weeds; the persistence of each component of the composition is improved, the generation of the drug resistance of weeds is delayed, the times of repeated use of pesticides are reduced, and the use amount and the cost are reduced; the herbicide is mainly applied to weed control of orchard and interline crops;
2. by screening and optimizing the types and contents of the dispersing agent, the wetting agent, the disintegrating agent, the binder and the filler, the prepared water dispersible granule has stable quality and good performance, is more beneficial to the exertion of the drug effect, and simultaneously has excellent dispersibility, suspension property, disintegration property, hard water resistance and the like; and the raw materials are easy to obtain, the preparation process is simple, and the industrial production is easy to realize.
Detailed Description
Examples
Example 1
The embodiment 1 provides a water dispersible granule of a weeding composition, which comprises the following components in percentage by weight: 30% of weeding composition, 15% of dispersing agent, 5% of wetting agent, 40% of disintegrating agent, 4% of binder and the balance of filler to 100%;
the weeding composition is a mixture of pyriminobac and 2, 4-D isooctyl ester, and the weight ratio is 1:40; the dispersing agent is sodium naphthalene sulfonate formaldehyde condensate, and is purchased from Kunshan sandian biotechnology limited; the wetting agent is p-methoxy fatty amide benzene sulfonic acid sodium salt, purchased from Ningbo chemical raw materials Co., ltd; the disintegrating agent is a mixture of urea and sodium sulfate, and the weight ratio of the disintegrating agent to the sodium sulfate is 0.8:1; the binder is polyethylene glycol 2000, purchased from dow; the filler is starch.
The preparation method of the weeding composition preparation comprises the following steps: coarsely crushing the weeding composition, the dispersing agent, the disintegrating agent, the wetting agent, the binder and the filler, and stirring and mixing; then carrying out ultrafine grinding by a jet mill to obtain powder with the particle size of more than 1000 meshes; and finally, adding a binder for granulation, and screening by using a vibrating screen to obtain the fertilizer.
Example 2
Embodiment 2 provides a water dispersible granule of a herbicidal composition, which comprises the following components in percentage by weight: 60% of weeding composition, 25% of dispersing agent, 15% of wetting agent, 10% of disintegrating agent, 1% of binder and the balance of filler to 100%;
the weeding composition is a mixture of bensulfuron methyl and oxyfluorfen, and the weight ratio of the bensulfuron methyl to the oxyfluorfen is 1:5; the dispersing agent is sodium naphthalene sulfonate formaldehyde condensate, and is purchased from Kunshan sandian biotechnology limited; the wetting agent is sodium p-methoxy fatty amide benzene sulfonate and is purchased from Ningbo chemical raw materials Co., ltd; the disintegrating agent is a mixture of urea and sodium sulfate, and the weight ratio is 0.3:1; the binder is polyethylene glycol 4000, purchased from dow; the filler is starch.
The preparation method of the weeding composition preparation comprises the following steps: coarsely crushing the weeding composition, the dispersing agent, the disintegrating agent, the wetting agent, the binder and the filler, and stirring and mixing; then carrying out ultrafine grinding by a jet mill to obtain powder with the particle size of more than 1000 meshes; and finally, adding a binder for granulation, and screening by using a vibrating screen to obtain the fertilizer.
Example 3
Embodiment 3 provides a water dispersible granule of a herbicidal composition, which comprises the following components in percentage by weight: 50% of weeding composition, 5% of dispersing agent, 1% of wetting agent, 20% of disintegrating agent, 2% of binder and the balance of filler to 100%;
the weeding composition is a mixture of pyriminobac-methyl and fluoroglycofen-ethyl, and the weight ratio is 1:5; the dispersing agent is sodium naphthalene sulfonate formaldehyde condensate, and is purchased from Kunshan sandian biotechnology limited; the wetting agent is sodium p-methoxy fatty amide benzene sulfonate and is purchased from Ningbo chemical raw materials Co., ltd; the disintegrating agent is a mixture of urea and sodium sulfate, and the weight ratio of the disintegrating agent to the sodium sulfate is 1.2:1; the binder is polyethylene glycol 4000, purchased from dow; the filler is starch.
The preparation method of the weeding composition preparation comprises the following steps: coarsely crushing the weeding composition, the dispersing agent, the disintegrating agent, the wetting agent, the binder and the filler, and stirring and mixing; then carrying out ultrafine grinding by a steam flow grinder to obtain powder with the particle size of more than 1000 meshes; and finally, adding a binder for granulation, and screening by using a vibrating screen to obtain the fertilizer.
Example 4
Example 4 differs from example 1 in that the dispersant is a fatty amine polyoxyethylene ether.
Example 5
Example 5 differs from example 1 in that the dispersant is a naphthalene sulfonic acid formaldehyde condensate.
Example 6
Example 6 differs from example 1 in that the humectant is powdered saponin.
Example 7
Example 7 differs from example 1 in that the wetting agent is dodecylbenzene sulfonate.
Example 8
Example 8 differs from example 1 in that the disintegrant is sodium sulphate.
Example 9
Example 9 differs from example 1 in that the disintegrant is urea.
Example 10
Example 10 differs from example 1 in that the disintegrant is cellulose.
Example 11
Example 11 differs from example 1 in that the binder is polyethylene glycol 200.
Example 12
Example 12 differs from example 1 in that the binder is xanthan gum.
Performance test
The granules prepared in the examples had a granulation mesh opening size of 1.5mm.
1. Wettability: measured according to GB/T5451-2001.
2. Disintegration property: after 2g of sample particles were added to a 100mL stoppered cylinder containing 90mL of water at 25 ℃, the mouth of the cylinder was stoppered, the middle of the cylinder was clamped, and then the cylinder was rotated at 8r/min about the center while a stopwatch was pressed and the time taken for the sample to completely disintegrate in water was recorded. This was repeated 5 times, and the average value was taken as the disintegration time of the sample.
3. Suspension percentage: measured according to the method of GB/T14825-2006.
4. Heat storage stability: sealing the sample in an ampoule bottle, then placing the sealed sample in a constant temperature environment of 54 +/-2 ℃, storing the sample for 14 days, taking out the sample, and measuring the suspension rate, wettability and disintegrability of the sample according to the method; and (4) judging the standard: if the variation of the suspension rate, wettability and disintegrability of the sample after heat storage is not more than 10%, the sample is qualified, otherwise, the sample is not qualified.
The test results are shown in Table 1.
TABLE 1 results of the Performance test of examples
| Examples | Wettability/s | Disintegration property/s | Suspension rate/% | Stability to Heat storage | Comprehensive assessment |
| Standard of merit | ≤120 | ≤180 | ≥60 | ||
| Example 1 | 10 | 46 | 98 | Qualified | Qualified |
| Example 2 | 12 | 49 | 98 | Qualified | Qualified |
| Example 3 | 18 | 57 | 92 | Qualified | Qualified |
| Example 4 | 37 | 66 | 81 | Fail to be qualified | Fail to be qualified |
| Example 5 | 42 | 69 | 83 | Fail to be qualified | Fail to be qualified |
| Example 6 | 92 | 70 | 82 | Fail to be qualified | Fail to be qualified |
| Example 7 | 85 | 64 | 80 | Fail to be qualified | Fail to be qualified |
| Example 8 | 81 | >180 | 75 | Qualified | Fail to be qualified |
| Example 9 | 85 | >180 | 79 | Qualified | Fail to be qualified |
| Example 10 | 92 | >180 | 81 | Qualified | Fail to be qualified |
| Example 11 | 76 | >180 | 87 | Qualified | Fail to be qualified |
| Example 12 | 83 | >180 | 82 | Qualified | Fail to be qualified |
Test of drug efficacy
The water dispersible granules (source: south Tong Jiangshan pesticide chemical industry Co., ltd.) prepared in example 2, namely (10% benconazole +50% oxyfluorfen) were adopted, and the control agents were 10% benconazole water emulsion (source: south Tong Jiangshan pesticide chemical industry Co., ltd.) and 24% oxyfluorfen emulsifiable concentrate (source: outsourced). The herbicide is applied to vacant lands of a citrus orchard and used for controlling undesirable vegetation, most species of field weeds are in the middle and later stages of vigorous growth, the main weeds comprise erigeron breviscapus, black nightshade herb, achyranthes bidentata, windwheel grass, crab grass and green bristlegrass, and various weeds are distributed in a colony mode.
The directional spraying is carried out by adopting a low-pressure sprayer. Visual control of weeds by the herbicide composition was investigated 30 days after the treatment.
Comparison of control of weeds in Citrus orchard (control% measured 30 days after treatment)
The test results show that the bensulfuron methyl and oxyfluorfen water dispersible granule provided by the invention has the advantages that the weeding range is expanded, the drug resistance of weeds is avoided, the lasting period of the drug is prolonged, the good preventing and removing effect is realized, and the effect is better compared with the similar single agent.
Claims (10)
1. A weeding composition is characterized by comprising a component A and a component B; the component A is the pyriminobac-methyl; the component B is at least one of oxyfluorfen, fluoroglycofen-ethyl and 2, 4-D isooctyl ester; the weight ratio of the component A to the component B is 1: (1-80).
2. A herbicidal composition according to claim 1, characterized in that when component B is oxyfluorfen and/or fluoroglycofen-ethyl, the weight ratio of component a to component B is 1: (1-10).
3. A herbicidal composition according to claim 1, characterized in that when component B is 2, 4-d isooctyl, the weight ratio of component a to component B is 1: (10-80).
4. A weeding composition preparation is characterized in that the preparation formulation is selected from one of missible oil, aqueous emulsion, microemulsion, dispersible oil suspending agent, wettable powder and water dispersible granule.
5. A herbicidal composition formulation according to claim 4, characterized in that the herbicidal composition is present in an amount of 1% to 90% by weight of the herbicidal composition formulation.
6. The herbicidal composition formulation as claimed in claim 4, wherein said herbicidal composition formulation is in the form of water dispersible granules; the preparation raw materials of the water dispersible granule at least comprise the following components in percentage by weight: 1-90% of weeding composition, 5-25% of dispersing agent, 1-15% of wetting agent, 5-50% of disintegrating agent, 1-5% of binding agent and the filler for making up 100%.
7. A herbicidal composition formulation as set forth in claim 6, wherein said dispersing agent is at least one member selected from the group consisting of formaldehyde condensates of alkyl naphthalene sulfonates, nekal, lignosulfonates, alkylnaphthalene sulfonates, polycarboxylates, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, naphthalene sulfonic acid formaldehyde condensate sodium salts, alkylphenol ethoxylates, fatty amine ethoxylates, fatty acid polyoxyethylene esters, glycerol fatty acid ester ethoxylates, alkyl sulfates, alkylsulfonates, naphthalene sulfonic acid formaldehyde condensates, styrylphenol ethoxylates, alkylaryl polyoxyethylene polyoxypropylene ethers, and alkylaryl methyl ether resin polyoxyethylene ethers.
8. A herbicidal composition formulation according to claim 6, wherein said wetting agent is selected from at least one of sulfo fatty acid methyl esters, fatty amide N-methyltaurinate sodium salt, alkylphenol ethoxylate sulfate, lauric acid sulfate, dodecylbenzene sulfonate, dodecyl sulfate, dibutyl naphthalene sulfonate, saponin powder, p-methoxy fatty amide benzene sulfonate.
9. A process for the preparation of a herbicidal composition formulation according to any one of claims 6 to 8, characterized in that a process of mix-crush-remix-granulate-sieve is used; the preparation method comprises the following steps: coarsely crushing the weeding composition, the dispersing agent, the disintegrating agent, the wetting agent, the binder and the filler, and stirring and mixing; then carrying out ultrafine grinding by a jet mill to obtain powder with the particle size of more than 1000 meshes; and finally, adding a binder for granulation, and screening by using a vibrating screen to obtain the fertilizer.
10. Use of a herbicidal composition according to any one of claims 1 to 3 for weed control in orchard and row-to-row crops.
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| CN108207997A (en) * | 2016-12-21 | 2018-06-29 | 沈阳中化农药化工研发有限公司 | A kind of herbicidal composition and its application |
| CN110150302A (en) * | 2018-02-12 | 2019-08-23 | 沈阳中化农药化工研发有限公司 | A kind of herbicidal composition and its application |
| CN109287639A (en) * | 2018-10-20 | 2019-02-01 | 南通江山农药化工股份有限公司 | The Herbicidal combinations of the phonetic careless azoles containing benzene and its application |
| CN113412840A (en) * | 2021-03-22 | 2021-09-21 | 南通江山农药化工股份有限公司 | Weeding composition, preparation and application thereof |
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