CN108293990B - Special synergist for pesticide spray and preparation method and application thereof - Google Patents

Special synergist for pesticide spray and preparation method and application thereof Download PDF

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CN108293990B
CN108293990B CN201810209725.XA CN201810209725A CN108293990B CN 108293990 B CN108293990 B CN 108293990B CN 201810209725 A CN201810209725 A CN 201810209725A CN 108293990 B CN108293990 B CN 108293990B
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pesticide
synergist
surfactant
special
spraying
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CN108293990A (en
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潘月敏
苏贤岩
张森
陈亚亚
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Anhui Agricultural University AHAU
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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
    • 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
    • A01N25/30—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 characterised by the surfactants
    • 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
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/38—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
    • 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
    • A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring

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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)
  • Toxicology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

A special synergist for pesticide spraying comprises the following raw materials in percentage by mass: 1-60% of surfactant A, 0.01-5% of surfactant B, 0.1-10% of thickening agent and the balance of water; the surfactant A is selected from two or more than two of propylene oxide condensation compound, polyoxyethylene-polyoxypropylene copolymer, polyether polyol, dioctyl sodium sulfosuccinate, di-2-ethylhexyl sulfosuccinate sodium salt, alkylbenzene sulfonate, polyoxyethylene fatty acid ester and polyoxyethylene fatty alcohol ether; the surfactant B is surfactin sodium. The invention can obviously reduce the surface tension of the liquid medicine, improve the adhesion and wetting permeability of the fog drops on the target, reduce the elegant and bouncing of the fog drops, improve the utilization rate of the liquid medicine, and has the advantages of safety, high efficiency and wide application range.

Description

Special synergist for pesticide spray and preparation method and application thereof
Technical Field
The invention relates to the field of pesticide high-efficiency dispersion, in particular to a special synergist for pesticide spraying and a preparation method thereof.
Background
At present, the prevention and control of crop diseases, insect pests and weeds in China still mainly adopts spray prevention and control, but in the prevention and control process, only 20% to 30% of sprayed pesticide can be deposited on a target, 70% to 80% of sprayed pesticide can be lost or drifted into soil and water, and serious pollution is caused to farmland ecology and even human living environment. In order to protect the ecological environment, ensure the quality and safety of agricultural products, improve the utilization rate of pesticides and reduce the usage amount of pesticides, the research in the field of current plant protection is focused and focused. In the spraying and pesticide applying process, the addition of the good spraying aid can effectively reduce the surface tension of pesticide liquid, optimize the particle size distribution of fog drops and improve the adhesion and wettability of the fog drops on plant leaves, thereby obviously improving the deposition amount of the fog drops on the plant leaves and improving the utilization rate of the active ingredients of the pesticide. But the spraying auxiliary agent products in China are relatively few at present, and the effects are good and uneven, so that the application is not wide. Therefore, more pesticide spraying auxiliary products with remarkable development effects are needed to be put on the market, the pesticide utilization rate is improved, the pesticide reduction and use are promoted, the environmental pollution is reduced, and the quality safety of agricultural products is guaranteed.
The sodium surfactin is a pure natural surfactant and has a unique cyclic peptide structure, so that a series of surface active properties such as excellent emulsification and dispersion are obtained. The pure natural surfactant is successfully produced in mass at present, and is applied to the fields of cosmetics, personal care, washing and the like, but is rarely applied to the field of pesticides.
Disclosure of Invention
The invention aims to provide a special synergist for pesticide spraying application and a preparation method thereof, the prepared pesticide spraying synergist has the advantages of reducing the surface tension of liquid medicine, improving the adhesion and wetting permeability of fog drops on a target, optimizing the particle size distribution of the spraying fog drops, reducing the elegant and bouncing of the fog drops, improving the utilization rate of the liquid medicine, along with safety, high efficiency and wide application range.
The special synergist for pesticide spraying of the invention comprises the following raw materials by mass percent:
1-60% of surfactant A, 0.01-5% of surfactant B, 0.1-10% of thickening agent and the balance of water.
In the above synergist for pesticide spray, preferably, the synergist comprises the following raw materials by mass percent: 10-50% of surfactant A, 0.01-1% of surfactant B, 0.1-5% of thickening agent and the balance of water.
In the above-mentioned synergist for agricultural chemical spraying, the surfactant a is preferably a mixture of two or more of propylene oxide condensates (PPG400, PPG600, PPG1000, etc.), polyoxyethylene-polyoxypropylene copolymers (TPE1000, PPE1500, GPE3000, BPE1500, etc.), polyether polyols (HSH206, HSH210, HSH220, etc.), dioctyl sodium sulfosuccinate and di-2-ethylhexyl sulfosuccinate sodium salt (rapid penetrant T), alkylbenzene sulfonate (calcium dodecylbenzenesulfonate), polyoxyethylene fatty acid esters (a103, a105, a110, etc.), fatty alcohol polyoxyethylene ethers (e.g., penetrant JFC-E, penetrant JFC-M, etc.).
In the synergist special for pesticide spray, preferably, the surfactant B is sodium surfactin.
In the synergist special for pesticide spraying, preferably, the thickener is one or a mixture of xanthan gum, magnesium aluminum silicate, sodium polyacrylate and cyclodextrin (alpha-cyclodextrin).
The preparation method of the special synergist for pesticide spraying provided by the invention comprises the steps of introducing the surfactant A, the surfactant B and the thickening agent into water under stirring, and filtering to remove residues after full stirring and high-speed shearing to obtain a finished product.
The application of the special synergist for pesticide spraying is to prepare a liquid medicine from a control medicament according to an instruction, then add the special synergist for pesticide spraying into 50 mL/mu, mix uniformly, and pour the mixture into a pesticide box of a spraying and pesticide spraying apparatus for pesticide application. Preferably, the control agent is prochloraz or chlorpyrifos.
The special synergist for pesticide spraying is suitable for spraying and applying by using a constant-volume spraying and applying device such as an electric sprayer, a mist sprayer, a self-propelled sprayer and the like and a low-volume and ultra-low-volume spraying device such as an unmanned aerial vehicle, an electric ultra-low-volume sprayer and the like.
The invention screens out proper surfactant combination on the basis of biological source surfactant sodium surfactin, and prepares the special synergist for spraying and applying by researching the adhesiveness and wetting permeability of the droplets of liquid medicine with different surface tensions on a control target under different spraying conditions of a spraying device and comprehensively considering the particle size and distribution concentration of the droplets.
The invention has the beneficial effects that:
1. the wetting permeability of pesticide liquid is improved: the preferable combination of the surfactant A and the surfactant B in the special synergist for pesticide spraying can effectively reduce the surface tension of the pesticide liquid, so that fog drops can effectively wet and extend on crop leaves, meanwhile, the pesticide liquid is promoted to permeate to the action part, and the control effect is improved.
2. Enhancing the adhesion of the active principle on the target: the thickening agent selected in the special synergist for pesticide spraying can improve the stability of the physicochemical property of the product, improve the adhesion performance of the liquid medicine on crop leaves, effectively prolong the retention time of fog drops on the crop leaves, promote more effective components to permeate into the leaves and effectively reduce the waste of the medicine-containing fog drops.
3. The application range is wide: the special synergist for pesticide spraying has good compatibility with the common pesticide preparations in the market at present, is matched with the pesticide preparations to be applied through a spraying apparatus, and can be used for preventing and treating diseases and insect pests of various crops such as wheat and the like.
Detailed Description
The following examples are further illustrative of the present invention as to the technical contents of the present invention, but the essence of the present invention is not limited to the following examples.
Example 1
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000031
the preparation method comprises the following steps: and (3) introducing water into the surfactant A, the surfactant B, the sodium surfactin and the thickening agent under stirring, and filtering to remove residues after fully stirring and high-speed shearing to obtain a finished product.
Example 2
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000032
the preparation method is the same as example 1.
Example 3
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000033
Figure BDA0001596848460000041
the preparation method is the same as example 1.
Example 4
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000042
the preparation method is the same as example 1.
Example 5
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000043
the preparation method is the same as example 1.
Example 6
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000044
Figure BDA0001596848460000051
the preparation method is the same as example 1.
Example 7
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000052
the preparation method is the same as example 1.
Example 8
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000053
the preparation method is the same as example 1.
Example 9
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000054
Figure BDA0001596848460000061
the preparation method is the same as example 1.
Comparative example 1 (without addition of sodium surfactin)
The special synergist for pesticide spray disclosed by the invention is prepared from the following raw materials in percentage by mass:
Figure BDA0001596848460000062
comparative example 2 (reduction of surfactant component)
The synergist raw material formula of the embodiment comprises the following components in percentage by mass:
Figure BDA0001596848460000063
comparative example 3 (reduction of surfactant component)
The synergist raw material formula of the embodiment comprises the following components in percentage by mass:
Figure BDA0001596848460000064
comparative example 4 (without addition of sodium surfactin)
The synergist raw material formula of the embodiment comprises the following components in percentage by mass:
Figure BDA0001596848460000065
Figure BDA0001596848460000071
comparative example 5 (without addition of thickener)
The synergist raw material formula of the embodiment comprises the following components in percentage by mass:
Figure BDA0001596848460000072
application example 1
The wetting permeability improving effect matched with the commercial pesticide is as follows: the synergist for pesticide spray prepared in the embodiments 1 to 9 of the invention and the control examples 1 to 5 are mixed with the pesticide liquid uniformly (the recommended dosage per mu is 1 kg/mu of pesticide liquid, and the product of the embodiment is added at 50 mL/mu). As can be seen, the surface tension of the solutions treated in the examples is significantly lower than the control, and the wetting time is significantly reduced when the wettability test is performed using standard canvas sheets (tested in HG/T2575 using standard circular canvas sheets).
TABLE 1 synergist special for pesticide spray for improving wetting permeability of pesticide liquid
Figure BDA0001596848460000073
Figure BDA0001596848460000081
TABLE 2 synergist special for pesticide spray to improve wetting permeability of medicinal liquid-2
Figure BDA0001596848460000082
As can be seen from tables 1 and 2, example 1 of the present invention has a lower surface tension than comparative examples 1 to 3, and is effective in reducing the permeation time of the drug, and the results show that: the surfactant A (polyether polyol and polyoxyethylene fatty acid ester) and the surfactant B sodium surfactin can be used in combination to effectively reduce the surface tension and the drug permeation time. In addition, the combined use effect of a plurality of surfactants A and B at least containing polyether polyol and polyoxyethylene fatty acid ester is obvious; the example 4 formulation is preferred.
Application example 2
The field control effect matched with the commercial pesticide is as follows: the synergist special for pesticide spraying, which is prepared in the embodiments 1 to 9, is matched with a pesticide preparation or a solution of a pesticide raw material, so that an excellent control effect can be obtained after the synergist is applied in fields, and the table below shows.
TABLE 3 Effect of the synergist for pesticide spraying in the prevention and control of field diseases and pests
Figure BDA0001596848460000091
Figure BDA0001596848460000101
As can be seen from Table 3, compared with the blank control, the control effects on wheat aphids and scab can be remarkably improved in the embodiments 1 to 9 of the present invention. Compared with the examples 1-3 and 5-9, the comprehensive control effect of the example 4 is the highest. As can be seen from the table, the synergist special for pesticide spraying is matched with common commercial pesticides, the control effect of the synergist is better than that of the conventional pesticide with the same dosage, and the synergist is safe and convenient to apply, low in pollution and high in efficiency.

Claims (3)

1. The application of the special synergist for pesticide spraying is characterized in that the special synergist for pesticide spraying can be matched with a bactericide and an insecticide to enhance the control effect on the diseases and insect pests of wheat crops; the special synergist for pesticide spraying comprises the following raw materials in percentage by mass: 0.05% of surfactin sodium, 10% of JFC, 2% of quick penetrating agent T, A-10515%, HSH-2203%, 0.5% of xanthan gum and the balance of water; the bactericide is prochloraz and the insecticide is imidacloprid.
2. The use as claimed in claim 1, wherein the prochloraz is 25% prochloraz emulsifiable concentrate and the imidacloprid is 5% imidacloprid emulsifiable concentrate.
3. Use according to claim 1 or 2, wherein the wheat crop pests are: wheat scab or wheat aphid.
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CN111213635B (en) * 2018-11-23 2022-07-26 江苏龙灯化学有限公司 Composition containing bifenazate and hexythiazox
CN113712827B (en) * 2021-08-20 2023-08-04 华熙生物科技股份有限公司 Spray emulsion product containing silicate and sodium surfactin and preparation method thereof
CN114642202A (en) * 2022-03-09 2022-06-21 佳化化学科技发展（上海）有限公司 Synergist and application thereof

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