CN114009431A - Novel herbicide synergist and preparation and use methods thereof - Google Patents
Novel herbicide synergist and preparation and use methods thereof Download PDFInfo
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- CN114009431A CN114009431A CN202111494189.0A CN202111494189A CN114009431A CN 114009431 A CN114009431 A CN 114009431A CN 202111494189 A CN202111494189 A CN 202111494189A CN 114009431 A CN114009431 A CN 114009431A
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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
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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
- A01N25/02—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
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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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing acyclic or cycloaliphatic radicals
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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
- A01N61/00—Biocides, pest repellants or attractants, or plant growth regulators containing substances of unknown or undetermined composition, e.g. substances characterised only by the mode of action
- A01N61/02—Mineral oils; Tar oils; Tar; Distillates, extracts or conversion products thereof
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Abstract
The invention relates to a novel herbicide synergist and a preparation method and a use method thereof, belonging to the technical field of plant protection tank mixing additives. The novel herbicide synergist is prepared from the following components in parts by weight: 10-50 parts of pyroligneous; 5-30 parts of lecithin; 5-30 parts of organic acid; 5-20 parts of a surfactant; 1-10 parts by weight of a solvent; the mass ratio of the lecithin to the wood vinegar is 1: 0.5-5. The wood vinegar is adopted as a main raw material, synergistic components such as lecithin and the like are compounded, the pH value of a liquid medicine system can be adjusted, the synergistic effect of the wood vinegar, the organic acid and the lecithin can promote the positioning, absorption and conduction of the herbicide in a crop target body, the synergistic effect is realized on most of the herbicide, and the synergistic effect on the herbicide with stable acidity is more obvious.
Description
Technical Field
The invention relates to the technical field of plant protection tank mixing additives, and particularly provides a novel herbicide synergist and a preparation method and a use method thereof.
Background
The pyroligneous is also called plant acid, is an acid by-product in the process of making charcoal by pyrolyzing agricultural and forestry wastes such as straws, fruit shells, leaves and branches, is a reddish brown liquid obtained by condensing and separating a steam gas mixture derived after dry distillation in dry distillation equipment, and is a mixture with very complex components. The main components of the fertilizer are acetic acid, phenols and water, wherein the organic matter component acetic acid accounts for more than 10%, and the fertilizer contains K, Ca, Mg, Zn, Ge, Mn, Fe and other trace elements. Pyroligneous acid has been widely used in the industrial and agricultural fields such as japan and korea. The biomass resource has the advantages of wide source, environmental protection, no pollution, low cost, recyclability and the like, and has important strategic significance for reducing the pollution of agricultural and forestry wastes, the diversified gradient utilization of the biomass resource and the implementation of the action of reducing the application and increasing the efficiency of chemical pesticides.
In the prior art, the wood vinegar is used as a soil conditioner, a plant nutrition protective agent and a plant source disease-resistant growth promoter for resisting wheat root rot, and also has the function of regulating the growth and development of rape and the like; the natural herbicide composition can be used as a herbicide to be matched with other components, for example, patent CN105240969A discloses a natural herbicide composition and application thereof, and the active ingredients of the natural herbicide composition consist of the following components in parts by weight: 1-90 parts of pelargonic acid and 1-90 parts of wood vinegar. The natural herbicide composition prepared by the invention can be effectively used for removing weeds. However, during the use process, the directional spraying is needed to carry out on weeds, and the herbicide is a biocidal herbicide and has a killing effect on weeds and crops.
Disclosure of Invention
The wood vinegar, the organic acid and the lecithin have synergistic effect to promote the positioning, absorption and conduction of the herbicide crop target in vivo, and different weeds can be killed in a targeted manner by being compounded with different pesticide components.
In order to solve the technical problems, the invention provides the following technical scheme:
on one hand, the invention provides a novel herbicide synergist which is prepared from the following components in parts by weight:
the mass ratio of the lecithin to the wood vinegar is 1: 0.5-5.
Preferably, the novel herbicide synergist is prepared from the following components in parts by weight:
preferably, the wood vinegar is distilled wood vinegar; the lecithin is soybean lecithin.
Preferably, the organic acid is propionic acid and/or acetic acid, and the solvent is water, alcohol, fatty acid methyl ester or mineral oil.
Further, the surfactant is a mixture of a nonionic surfactant and an anionic surfactant.
Preferably, the nonionic surfactant is one or more of isooctanol polyoxyethylene ether, C12-14 fatty alcohol polyoxyethylene ether, acetylenic diol polyoxyethylene ether, EO-modified heptamethyl trisiloxane and cardanol polyoxyethylene ether;
the anionic surfactant is one or more of lauryl alcohol ether phosphate and octyl phenol polyoxyethylene ether phosphate.
Preferably, the surfactant is acetylene glycol polyoxyethylene ether and lauryl alcohol ether phosphate in a mass ratio of 3: 2.
In another aspect, the present invention also provides a method for preparing the above novel herbicide synergist, comprising:
step 1: mixing lecithin and organic acid at room temperature, and stirring uniformly;
step 2: adding wood vinegar and a surfactant into the step 1, and continuously stirring until the solution is uniform;
and step 3: and (3) adding a solvent into the step (2), and uniformly stirring.
Lecithin is an oily substance, has poor fluidity at normal temperature, and is not easy to absorb when being used as an auxiliary agent in pesticide components. The wood vinegar, the lecithin and the organic acid are reacted together, and then the synergistic surfactant and the pesticide are mixed to promote the absorption and utilization of the pesticide, so that the synergistic effect is excellent, and the synergistic agent can be used in combination with different pesticide components to kill different weeds in a targeted manner.
In another aspect, the invention also provides a method for using the novel herbicide synergist, wherein the novel herbicide synergist is added into a prepared pesticide liquid barrel in a barrel mixing mode in the using process of the herbicide, and the adding amount is 0.1-2.0% of the total mass of the pesticide liquid. The novel herbicide synergist has a synergistic effect on most herbicides, has a more obvious synergistic effect on the acid-stable herbicides, and preferably, the herbicide is one or more of glyphosate, oxadiazon, mesotrione, penoxsulam, glufosinate, clomazone, topramezone, penoxsulam, bispyribac-sodium, clodinafop-propargyl, fluroxypyr, mesotrione, sulcotrione, nicosulfuron, atrazine, 2, 4-D-butyl ester, pyroxsulam, mesosulfuron, fenoxaprop-p-ethyl, pinoxaden, thifensulfuron-methyl, oxyfluorfen, cyhalofop-butyl, flucarbazone, carfentrazone and pyraflufen.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the organic acid reacts with lecithin to improve the fluidity to a certain extent, and then the wood vinegar further reacts with the lecithin to realize the modification of the lecithin, so that the lecithin has better fluidity and is convenient to be mixed with pesticide for application. And finally, the pesticide synergistic agent and the surfactant are synergistic to accelerate the absorption of the pesticide and realize the synergistic effect of the pesticide. And the prepared synergist is compounded with different pesticide components for use, so that different weeds can be killed, and adverse effects on crops are avoided.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is given with reference to specific embodiments.
The reagents and materials used in the examples and comparative examples were commercially available unless otherwise specified. Wherein the wood vinegar is distilled wood vinegar; the lecithin is soybean lecithin.
The invention provides a novel herbicide synergist and a preparation method and a use method thereof, and specific examples are as follows.
Example 1
A novel herbicide synergist is prepared from the following components in parts by weight: 50 parts of pyroligneous; 25 parts by weight of lecithin; 30 parts by weight of propionic acid; 3 parts of isooctanol polyoxyethylene ether, 2 parts of lauryl alcohol ether phosphate and 1 part of water.
The preparation method of the novel herbicide synergist comprises the following steps:
step 1: mixing lecithin and organic acid at room temperature, and stirring uniformly;
step 2: adding wood vinegar and a surfactant into the step 1, and continuously stirring until the solution is uniform;
and step 3: and (3) adding a solvent into the step (2), and uniformly stirring to obtain the synergist product.
Example 2
A novel herbicide synergist is prepared from the following components in parts by weight: 10 parts of pyroligneous; 20 parts by weight of lecithin; 10 parts by weight of acetic acid; 5 parts of C12 fatty alcohol-polyoxyethylene ether, 5 parts of octyl phenol-polyoxyethylene ether phosphate and 5 parts of fatty acid methyl ester.
The preparation method is the same as example 1.
Example 3
A novel herbicide synergist is prepared from the following components in parts by weight: 20 parts of pyroligneous; 30 parts by weight of lecithin; 5 parts of propionic acid and 10 parts of acetic acid; 10.8 parts of acetylene glycol polyoxyethylene ether, 7.2 parts of lauryl alcohol ether phosphate and 5 parts of fatty acid methyl ester.
The preparation method is the same as example 1.
Example 4
A novel herbicide synergist is prepared from the following components in parts by weight: 20 parts of pyroligneous; 30 parts by weight of lecithin; 12 parts by weight of acetic acid; 12 parts of acetylene glycol polyoxyethylene ether, 3 parts of lauryl alcohol ether phosphate, 5 parts of octyl phenol polyoxyethylene ether phosphate and 5 parts of water.
The preparation method is the same as example 1.
Example 5
A novel herbicide synergist is prepared from the following components in parts by weight: 12 parts of pyroligneous; 18 parts by weight of lecithin; 20 parts by weight of propionic acid; 4 parts of cardanol polyoxyethylene ether, 4 parts of acetylene glycol polyoxyethylene ether, 4 parts of octyl phenol polyoxyethylene ether phosphate and 5 parts of water.
The preparation method is the same as example 1.
Example 6
A novel herbicide synergist is prepared from the following components in parts by weight: 10 parts of pyroligneous; 15 parts by weight of lecithin; 18 parts of acetic acid; 12 parts of acetylene glycol polyoxyethylene ether, 8 parts of lauryl alcohol ether phosphate and 10 parts of water.
The preparation method is the same as example 1.
Example 7
A novel herbicide synergist is prepared from the following components in parts by weight: 10 parts of pyroligneous; 5 parts by weight of lecithin; 5 parts by weight of propionic acid; 6 parts of C14 fatty alcohol-polyoxyethylene ether, 4 parts of octyl phenol-polyoxyethylene ether phosphate and 5 parts of water.
The preparation method is the same as example 1.
To further highlight the beneficial effects of the present invention, the following comparative example was constructed as an example of example 6 for reasons of space limitation.
Comparative example 1
In this comparative example, the same conditions as in example 6 were used except that the pyroligneous acid solution was replaced with the same amount of acetic acid.
Comparative example 2
In this comparative example, acetic acid was replaced with an equal amount of pyroligneous acid, and the remaining conditions were the same as in example 6.
Comparative example 3
In this comparative example, lecithin was replaced with an equal amount of pyroligneous acid, and the remaining conditions were the same as in example 6.
Comparative example 4
In this comparative example, the acetylene glycol polyoxyethylene ether was replaced with an equal amount of lauryl alcohol ether phosphate, and the remaining conditions were the same as in example 6.
Comparative example 5
In this comparative example, lauryl alcohol ether phosphate was replaced with an equal amount of sodium dodecylsulfate, and the remaining conditions were the same as in example 6.
Comparative example 6
The amounts of the materials used in this comparative example were the same as in example 6, and the preparation method was: mixing wood vinegar, lecithin, organic acid, surfactant and solvent at the same time, and stirring to obtain uniform solution.
Comparative example 7
The amounts of the materials used in this comparative example were the same as in example 6, and the preparation method was:
step 1: mixing lecithin and wood vinegar at room temperature, and stirring uniformly;
step 2: adding a surfactant into the solution obtained in the step 1, and continuously stirring until the solution is uniform;
and step 3: adding a solvent into the step 2, and uniformly stirring;
and 4, step 4: and (4) adding the organic acid into the step (3) and uniformly stirring.
The performance of the synergists prepared in the above examples and comparative examples was tested, specifically, the synergists prepared in the above examples and comparative examples were added to the prepared liquid medicine barrel in a tank-mix manner, the addition amount was 0.1-2.0% of the total mass of the liquid medicine, and the herbicidal effect was tested.
1. Indoor soil treatment test: indoor synergy test of the synergist on 120g/L oxadiazon missible oil;
the control object is: annual grassy barnyard grass, annual broadleaf weed amaranthus retroflexus;
application method and water consumption (liter/hectare): the application amount of the oxadiazon emulsifiable concentrate is 312.75 ml/mu at 120 g/L; after the weeds are sown, the soil before emergence of seedlings is treated by spraying, and the water consumption is 500 liters per hectare;
blank control group: spraying clear water according to the dose of 312.75 ml/mu;
the control effect on weeds 30 days after the synergist prepared in the embodiment of the invention is shown in table 1; the control effect on weeds 30 days after the synergist prepared in comparative example is shown in table 2.
TABLE 1
As can be seen from Table 1, the synergist prepared in the embodiment of the invention has a good control effect on annual broadleaf weed Amaranthus retroflexus and annual gramineous weed barnyard grass 30 days later. The single-use 120g/L oxadiazon emulsifiable concentrate and the synergist have certain control effect on weeds, but the control effect of the single-use oxadiazon emulsifiable concentrate is far lower than that of the single-use oxadiazon emulsifiable concentrate compounded with the synergist.
TABLE 2
As can be seen from table 2, when the synergist obtained by omitting the wood vinegar (comparative example 1), or omitting the organic acid (comparative example 2), or omitting the lecithin is used together with the oxadiazon emulsifiable concentrate, the control effect on the weeds is reduced; part of components in the surfactant are replaced (comparative examples 4-5), and the synergistic effect of the obtained synergist on the oxadiazon missible oil is also reduced; by changing the preparation method of the synergist, the control effect of the oxadiazon emulsifiable concentrate on weeds is reduced.
The lecithin is firstly reacted with the organic acid and then further reacted with the wood vinegar to realize the modification of the lecithin, and meanwhile, the lecithin synergist after the wood vinegar is modified and the specific surfactant have synergistic effect, so that the weeding effect of the herbicide is improved, other nutrient components in the wood vinegar can be retained to the greatest extent, and the growth of crops is promoted.
2. Indoor stem leaf treatment test: indoor synergy test of the synergist on 15% mesotrione SC;
the control object is: annual grassy weeds barnyard grass
Application method and water consumption (liter/hectare): the stem and leaf of the potted plant weeds after emergence of seedlings are sprayed, and the water consumption is 250 liters per hectare.
Blank control group: spraying clear water as a control;
the control effect on weeds 30 days after the synergist prepared in the embodiment of the invention is shown in table 3; the control effect on weeds 30 days after the synergist prepared in comparative example is shown in table 4.
TABLE 3
As can be seen from Table 3, the synergist prepared in the embodiment of the invention has a good control effect on barnyard grass 30 days later. The single use of 15% mesotrione SC and the synergist of the invention have certain control effect on weeds, but the control effect of the single use of 15% mesotrione SC is far lower than the control effect of the single use of mesotrione SC and the synergist in combined use.
TABLE 4
As can be seen from table 4, the synergistic agent obtained by omitting the wood vinegar (comparative example 1), or omitting the organic acid (comparative example 2), or omitting the lecithin, when used together with mesotrione SC, had a reduced control effect on weeds; replacing part of the ingredients in the surfactant (comparative examples 4-5), the synergistic effect of the obtained synergist on 15% mesotrione SC was also reduced; changing the preparation method of the synergist of the present invention also resulted in a reduction in the control of weeds by 15% mesotrione SC.
3. And (3) field soil treatment test: the synergist is used for field synergy test of 85% 2,4-D isooctyl ester emulsifiable solution;
test site: city of princess of Jilin province
Test article and control object: corn and HBD258, wherein the main weeds in the test field comprise piemarker, Chenopodium quinoa, acalypha australis, polygonum hydropiper, siegesbeckia orientalis, Amaranthus retroflexus and the like;
the application method and the water consumption are as follows: 85% 2,4-D isooctyl ester missible oil 50 ml/mu is used singly or added with different synergists; the amount of the sprayed liquid is 30 liters per mu, a knapsack sprayer is used, a fan-shaped spray head is used for spraying the ground surface of each cell in the absence of wind in the morning, and the herbicide is applied only once in the whole growth period. When the herbicide is applied, the corn and the weeds are not unearthed.
The control effect on weeds 15 days after the synergist prepared in the embodiment of the invention is shown in table 5; the control effect on weeds 15 days after the synergist prepared in comparative example is shown in table 6.
TABLE 5
After one week of continuous observation after application, no phytotoxicity is found in each application treatment, which indicates that the combination of the pesticide and the auxiliary agent is safe for corn. As can be seen from Table 5, the total control effect on weeds in corn fields can reach 82.0% 15 days after the application of the herbicide.
TABLE 6
As can be seen from Table 6, the synergistic agent of the comparative example of the present invention has a poor effect of controlling weeds when it works together with 85% of 2,4-D isooctyl ester emulsifiable concentrate, as compared with the synergistic agent prepared in the examples of the present invention.
In conclusion, the wood vinegar is adopted as the main raw material, synergistic components such as lecithin and the like are compounded, the pH value of a liquid medicine system can be adjusted, the organic acid in the wood vinegar and the lecithin have synergistic effect to promote the positioning, absorption and conduction of the herbicide in a crop target body, and different weeds can be killed by the composite use of the wood vinegar and different pesticide components.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The novel herbicide synergist is characterized by being prepared from the following components in parts by weight:
the mass ratio of the lecithin to the wood vinegar is 1: 0.5-5.
2. A novel herbicide synergist according to claim 1, characterized in that it is prepared from the following components in parts by weight:
3. a novel herbicide potentiator according to claim 1 or 2, wherein said pyroligneous acid is distilled pyroligneous acid; the lecithin is soybean lecithin.
4. A novel herbicide potentiator according to claim 3, wherein said organic acid is propionic acid and/or acetic acid; the solvent is water, alcohol, fatty acid methyl ester or mineral oil.
5. A novel herbicide potentiator according to claim 4 wherein said surfactant is a mixture of nonionic and anionic surfactants.
6. A novel herbicide synergist according to claim 5, wherein said nonionic surfactant is one or more of isooctanol polyoxyethylene ether, C12-14 fatty alcohol polyoxyethylene ether, acetylenic diol polyoxyethylene ether, EO-modified heptamethyltrisiloxane, cardanol polyoxyethylene ether;
the anionic surfactant is one or more of lauryl alcohol ether phosphate and octyl phenol polyoxyethylene ether phosphate.
7. A novel herbicide synergist according to claim 6, wherein said surfactant is an acetylene glycol polyoxyethylene ether and a lauryl alcohol ether phosphate at a mass ratio of 3: 2.
8. The process for producing a novel herbicide potentiator of any one of claims 1 to 7, which comprises:
step 1: mixing lecithin and organic acid at room temperature, and stirring uniformly;
step 2: adding wood vinegar and a surfactant into the step 1, and continuously stirring until the solution is uniform;
and step 3: and (3) adding a solvent into the step (2), and uniformly stirring.
9. The method of using a novel herbicide potentiator of any one of claims 1 to 7, wherein the novel herbicide potentiator is added to a tank of a formulated drug solution in a tank-mix manner in an amount of 0.1 to 2.0% by mass of the total drug solution during the use of the herbicide.
10. A method of using a novel herbicide synergist according to claim 9 wherein the herbicide is one or more of glyphosate, oxadiazon, mesotrione, penoxsulam, glufosinate, clomazone, topramezone, benzoxaflutole, penoxsulam, bispyribac-sodium, clodinafop-propargyl, fluroxypyr-meptyl, mesotrione, sulcotrione, nicosulfuron, atrazine, 2, 4D-isooctyl ester, 2, 4-D-butyl ester, pyroxsulam, mesosulfuron, fenoxaprop-p-ethyl, pinoxaden, thifensulfuron-methyl, oxyfluorfen, cyhalofop-butyl, flucarbazone, carfentrazone, and pyraflutole-ethyl.
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| JP2004217576A (en) * | 2003-01-15 | 2004-08-05 | Univ Miyazaki | Antimicrobial solution for agriculture and horticulture, and method for producing the same |
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