CN118104680A - Insecticidal composition containing fluxapyroxad, insecticidal pesticide and application - Google Patents
Insecticidal composition containing fluxapyroxad, insecticidal pesticide and application Download PDFInfo
- Publication number
- CN118104680A CN118104680A CN202410248489.8A CN202410248489A CN118104680A CN 118104680 A CN118104680 A CN 118104680A CN 202410248489 A CN202410248489 A CN 202410248489A CN 118104680 A CN118104680 A CN 118104680A
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- CN
- China
- Prior art keywords
- insecticidal
- fluxapyroxad
- pesticide
- pests
- aphid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a fluxapyroxad-containing insecticidal composition, an insecticidal pesticide and application thereof, and belongs to the technical field of insecticidal pesticides. The insecticidal composition containing the fluxapyroxad is one combination of the fluxad and lufenuron, the fluxapyroxad and hexaflumuron, and the fluxapyroxad and the diflubenzuron. The insecticidal composition has completely different action mechanisms of the fluxazolamide and the benzoyl urea insecticide, and the compound can synergistically increase the effect on pests, improve the control effect, reduce the use amount of pesticides, delay the generation of drug resistance and reduce the resistance risk. The composition of the invention is prepared into pesticide preparations, and can be used for preventing and controlling lepidoptera pests and piercing-sucking mouthpart pests of horticultural crops such as vegetables, fruit trees and the like, and field crops such as corn, cotton, rice and the like.
Description
Technical Field
The invention belongs to the technical field of insecticidal pesticides, and particularly relates to an insecticidal composition containing fluxapyroxad, an insecticidal pesticide and application.
Background
Chemical pest control is the most economical and effective means in pest control, and the application of pesticides to control pests has extremely important significance in recovering crop yield loss and improving commodity and quality of agricultural products.
The fluorooxazamide (Fluxametamide) is a novel isoxazole pesticide, is developed by Japanese chemical Co., ltd, has broad-spectrum biological activity, has special effect on lepidoptera pests, and can prevent and treat pests such as acarina, thysanoptera, diptera and the like. The novel action mechanism of the fluorooxazolamide belongs to a glutamic acid-gated chloride ion channel (LGCC) interfering agent, and mainly acts on a gamma-aminobutyric acid-gated chloride ion channel (GABACI) of insects.
The benzoyl urea pesticide can inhibit chitin synthesis by inhibiting insect chitin synthase activity, so that the insect chitin is reduced in feeding, slowed in activity or molted or pupated and finally dead, has high activity on lepidoptera larvae, and has effects on pests such as diptera, coleoptera and hymenoptera, and has a long lasting period. The pesticide mainly has stomach toxicity effect, low contact activity, relatively slow drug effect, easy decomposition in animals and plants, soil and water, small residue, and safety to human, livestock and bee.
In the process of using pesticides to control pests, the chemical pesticides of a single variety or a single action mode are continuously used for a long time in high dosage, so that the problems of pest resistance, resistance evolution and the like are easily caused. The reasonable compounding or compounding of the pesticide compound has the advantages of reducing the dosage of the pesticide, improving the control effect, delaying the occurrence and development of the pesticide resistance of pests, and the like, and is one of the most effective methods for solving the problems.
Disclosure of Invention
Aiming at the problems of easy pest resistance and resistance evolution and the like caused by using a single variety or a single-action mode chemical pesticide continuously and in a high dosage for a long time in the prior art, the invention provides a fluxapyroxad-containing insecticidal composition, an insecticidal pesticide and application.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The insecticidal composition containing the fluxazole amide is one combination of the fluxazole amide and lufenuron, the fluxazole amide and hexaflumuron, the fluxazole amide and the diflubenzuron;
The weight ratio of the fluxapyroxad to the lufenuron is 1:1-1:20; the weight ratio of the fluxapyroxad to the hexaflumuron is 1:1-1:10; the weight ratio of the fluorooxazamide to the diflubenzuron is 1:2-1:20, and in the weight ratio range, the mixed use of the fluorooxazamide and the benzoyl urea pesticide achieves the technical effect of synergistic interaction.
The application of the insecticidal composition containing the fluxapyroxad in preparing insecticidal pesticides, wherein the insecticidal pesticides are used for preventing and controlling lepidoptera pests and piercing-sucking mouthpart pests.
The insecticidal pesticide containing the fluorine oxazamide comprises the insecticidal composition containing the fluorine oxazamide, wherein the mass percentage of the insecticidal composition accounts for 1-95% of the total pesticide, and is preferably 10-80%; in general, the insecticidal compositions of the present invention comprise 1 to 95 parts by weight of active ingredient and 5 to 99 parts by weight of conventional adjuvants for pesticides.
Conventional adjuvants in such pesticidal pesticides may include carriers, surfactants, and the like, wherein the surfactants include, for example, quaternary, dispersing and wetting agents, which may be ionic or nonionic. Examples which may be mentioned are salts of polyacrylic acid, lignosulfonates, salts of phenolsulfonic acid or naphthalenesulfonic acid, polymers of ethylene oxide with aliphatic alcohols or with aliphatic amines with substituted phenols, in particular alkylphenols or arylphenols, sulfosuccinates, taurine derivatives, in particular taurates, and phosphates of alcohols or of polyethylated phenols, alkylsulfonates, alkylaryl sulfonates, alkyl sulfates, lauryl ether sulfates, fatty alcohol sulfates, and also sulfated hexadecyl-, heptadeca-and octadecanols and sulfated fatty alcohol glycol ethers, furthermore condensates of naphthalene or naphthalenesulfonic acid with phenol and formaldehyde, polyoxyethylene octylphenyl ether, ethoxylated isooctylphenols, octylphenols or nonylphenols, alkylphenyl polyglycol ethers, tributylphenyl polyglycol ethers, tristearylphenyl polyglycol ethers, alkylaryl polyether alcohols, alcohol and fatty alcohol/ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ethers, sorbitol esters, lignin sulfite waste solutions, and also proteins, polysaccharides (e.g. methylcellulose), polyvinyl alcohol, hydrophobically modified polyvinyl pyrrolidone, polyvinyl alcohol carboxylate, polyvinyl pyrrolidone, and copolymers thereof. At least one surfactant is required to be present to facilitate the dispersion of the active ingredients in water and to enable them to be applied correctly to the plants.
The carrier means an organic or inorganic, natural or synthetic substance. They facilitate the application of the active ingredient, which carriers are generally inert and must be agriculturally acceptable, in particular by the treated plants. The carrier may be solid, such as clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer, etc.; or liquid, such as water, alcohols, ketones, petroleum fractions, aromatic or waxy hydrocarbons, chlorinated hydrocarbons, liquefied gases, and the like.
The pesticidal pesticides may also contain various other components such as solvents, antifreeze agents, disintegrants, protective colloids, binders, thickeners, thixotropic agents, penetrants, stabilizers, chelating agents, film formers, dyes, colorants and polymers.
The specific formulation of the insecticidal pesticide is one of wettable powder, dispersible oil suspending agent, suspending seed coating agent, suspending emulsion, water dispersible granule, emulsifiable concentrate, aqueous emulsion and microemulsion.
Adding the raw materials, the safener, the solvent and the emulsifier in the formula into a mother liquor preparation kettle to prepare a uniform oil phase, uniformly mixing deionized water, an antifreeze agent and the like, injecting the mixture into the product preparation kettle, and uniformly mixing the mixture by high-speed stirring to prepare the transparent or semitransparent microemulsion product of the insecticidal pesticide.
Briefly, the pesticidal pesticides of the present invention may be mixed with solid and liquid additives conventionally used in prior art formulations.
The fluxapyroxad and the benzoylurea pesticides lufenuron, diflubenzuron and hexaflumuron have broad-spectrum insecticidal activity and have higher activity on piercing-sucking mouthparts pests such as lepidoptera, acarina, thysanoptera, diptera and the like, so that the fluxapyroxad-containing insecticidal pesticide can be used for preventing and controlling lepidoptera pests and piercing-sucking mouthpart pests, wherein the lepidoptera pests are at least one of cotton bollworms, beet armyworms, spodoptera frugiperda, plutella xylostella, corn borers, carpopolylis, chilo suppressalis and rice leaf rollers; the piercing-sucking mouthpart pest is at least one of wheat aphid, cotton aphid, corn aphid, bean aphid, potato aphid, apple cotton aphid, tomato white fly, brown planthopper, empoasca pseudoeye and leafhopper.
The pesticidal pesticide may be diluted by the user before use or used directly. The preparation can be prepared by common processing method, namely, mixing the active substance with liquid solvent or solid carrier, and adding one or more surfactants such as dispersing agent, stabilizer, wetting agent, adhesive, defoamer, etc.
The insecticidal pesticide can be applied to leaves and seeds of plants to be treated by spraying and seed treatment. The experimental study shows that the active ingredients of the insecticidal pesticide disclosed by the invention have obvious synergistic effect between the fluxapyroxad and the benzoylurea insecticide. The synergistic effect is expressed by reduced application amount, faster and longer insecticidal action.
The technical scheme of the invention has the advantages that:
(1) The insecticidal composition disclosed by the invention is an environment-friendly insecticide, is easy to degrade in the environment and is safe to crops.
(2) The insecticidal composition provided by the invention has the characteristics of convenience in use and easiness in popularization, and has great economic and social benefits.
(3) Compared with the prior art, the composition of the invention is prepared into pesticide preparations, and can be used for preventing and controlling lepidoptera pests and piercing-sucking mouthpart pests of horticultural crops such as vegetables, fruit trees and the like, and field crops such as corn, cotton, rice and the like. The lepidoptera pests are cotton bollworms, asparagus caterpillar, armyworms, spodoptera frugiperda, corn borers, carpopodium borers, chilo suppressalis, cnaphalocrocis medinalis and the like, and the sucking type mouth parts pests are wheat aphids, cotton aphids, corn aphids, bean aphids, potato aphids, apple cotton aphids, tomato white flies, brown planthoppers, pseudoeye leafhoppers and the like.
Detailed Description
The terms used in the present invention generally have meanings commonly understood by those of ordinary skill in the art unless otherwise indicated.
The invention will be described in further detail below in connection with specific embodiments and with reference to the data. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention in any way.
Example 1
The insecticidal composition of the fluxapyroxad and the lufenuron, wherein the weight ratio of the fluxapyroxad to the lufenuron is 10:1-1:40.
Fusoxazole amide and lufenuron compounded for pest control effect (indoor toxicity measurement)
Test agent: fluoxazolamide and lufenuron as raw material. Dissolving the fluorooxazamide and lufenuron in acetone to obtain 10000mg/kg mother liquor, and storing in refrigerator at 4deg.C.
Test insects: cotton bollworm 3-instar larvae.
The measuring method comprises the following steps: taking lepidoptera pests cotton bollworm as an example, the toxicity of the fluxapyroxad, lufenuron and the mixed preparation thereof to the lepidoptera pests is measured by adopting a leaf dipping method.
Single dose toxicity determination method:
The leaf soaking method is adopted, firstly, the test reagent (fluxapyroxad and lufenuron) is prepared into 10000mg/kg mother liquor by acetone, then 5 concentration gradients are prepared by 0.1% Tween-80 solution according to an equal ratio method, and 0.1% Tween-80 solution is used as a control. Washing the surface waxy layer with washing powder without using the leaf, airing, punching into round leaves with the diameter of 1.5cm by using a puncher, soaking in the liquid medicine for 10 seconds, taking out, airing on absorbent paper, putting into 24-hole insect breeding plates, putting 2 leaves in each hole, accessing 1 head of larva, putting into a 27 ℃ illumination incubator, and investigating the number of living insects after 72 hours. For each 3 replicates treated, DSP was used to determine virulence regression equations, median lethal concentration (LC 50) and 95% confidence intervals.
Determination of combined toxicity of the mixture:
On the basis of single-dose toxicity measurement, the mixed active ingredient A (fluxapyroxad) and active ingredient B (lufenuron) are respectively provided with 9 proportions of 10:1, 5:1, 2:1, 1:1, 1:2, 1:5, 1:10, 1:20 and 1:40 according to the LC 50 value dosage, 5 series concentration gradients are prepared according to different proportions, and each treatment is repeated for 3 times. The LC 50 value and CTC value of the compound agent to the death of cotton bollworms were determined by linear regression analysis between the number of the mortality rate of the insect population and the concentration of the agent.
Statistical analysis of data
The test data were statistically analyzed by Microsoft Excel 2016 and DPS data processing platform to calculate LC 50 values and 95% confidence limits for each agent. And calculating the co-toxicity coefficient of the mixed agent by using a grand cloud Peel method (1960), and evaluating the synergistic effect of the mixed agent according to the co-toxicity coefficient.
The inhibition of each agent was calculated according to the following formula:
insect population mortality (%) =number of dead insect population/total number of treated insects×100
Corrected mortality (%) = [ (treated group port mortality-control group port mortality)/(1-control group port mortality) ]100
Toxicity index ti= (standard agent LC 50/test agent LC 50) ×100
Actual toxicity index ati= (standard agent LC 50/compound LC 50) ×100 of the compound formulation
Theoretical toxicity index of the mixture tti=ti×pa of the single agent a+ti×pb of the single agent B (PA and PB are the percentage of active ingredients in the mixture, respectively)
Co-toxicity coefficient CTC = actual toxicity index of the compound ATI/theoretical toxicity index of the compound TTI x 100
Judging the synergy: CTC is more than or equal to 120, and has synergistic effect; CTC is 80 < 120, which is additive; CTC is less than or equal to 80, and is antagonistic.
Results and analysis: as shown in table 1.
TABLE1 toxicity test results of Fuxazolamide, lufenuron and mixtures thereof on cotton bollworms
As shown in Table 1, the fluxapyroxad, lufenuron and the mixture thereof have higher indoor toxicity to cotton bollworms, wherein when the ratio of the fluxapyroxad to lufenuron is between 1:1 and 1:20, the co-toxicity coefficient to cotton bollworms is more than 120, which indicates that the two pesticides have good synergistic effect under the ratio.
Example 2
The insecticidal composition of the fluxazole amide and the hexaflumuron, wherein the weight ratio of the fluxazole amide to the hexaflumuron is 10:1-1:40.
Fusoxazole amide and hexaflumuron are compounded to prevent and treat pests (indoor toxicity measurement)
Test agent: fusoxazolamide and hexaflumuron. Dissolving the raw materials of the fluxapyroxad and the hexaflumuron in acetone, preparing 10000mg/kg mother solution, and storing in a refrigerator at 4 ℃ for standby.
Test insects: beet armyworm 3-instar larvae.
The measuring method comprises the following steps: taking spodoptera exigua as an example, the toxicity of the fluxapyroxad, hexaflumuron and the mixed preparation thereof to the lepidoptera exigua is measured by adopting a leaf dipping method.
The method for measuring toxicity of single dose, the method for measuring toxicity of combination of mixed agents and the method for statistical analysis of data are the same as in example 1.
Results and analysis: as shown in table 2.
TABLE 2 toxicity measurement results of Furazolam, furazolam and mixtures thereof on asparagus caterpillar
As shown in Table 2, the fluxazole amide, the hexaflumuron and the mixture thereof have higher indoor toxicity to the spodoptera exigua, wherein when the ratio of the fluxazole amide to the hexaflumuron is between 1:1 and 1:10, the co-toxicity coefficient to the spodoptera exigua is more than 120, which indicates that the two pesticides have good synergistic effect under the ratio.
Example 3
The insecticidal composition of the fluxazole amide and the diflubenzuron, wherein the weight ratio of the fluxazole amide to the diflubenzuron is 10:1-1:40.
Fusoxazole amide and diflubenzuron are compounded to prevent and treat pests (indoor toxicity measurement)
Test agent: fluorooxazamide and diflubenzuron. Dissolving fluorooxazamide and diflubenzuron in acetone to obtain 10000mg/kg mother liquor, and storing in refrigerator at 4deg.C.
Test insects: corn borer 3-instar larvae.
The measuring method comprises the following steps: taking lepidoptera pests, such as corn borer, as an example, a leaf dipping method is adopted to measure toxicity of the fluxapyroxad, the diflubenzuron and the mixed preparation thereof to the lepidoptera pests.
The method for measuring toxicity of single dose, the method for measuring toxicity of combination of mixed agents and the method for statistical analysis of data are the same as in example 1.
Results and analysis: as shown in table 3.
TABLE 3 toxicity determination results of Fuxazolamide, diflubenzuron and mixtures thereof on corn borers
As shown in Table 3, the fluxazolamide, the diflubenzuron and the mixture thereof have higher indoor toxicity to corn borers, wherein when the ratio of the fluxazolamide to the diflubenzuron is between 1:2 and 1:20, the co-toxicity coefficient to the corn borers is more than 120, which indicates that the two pesticides have good synergistic effect under the ratio.
Example 4
24% Fluxapyroxad-lufenuron emulsifiable concentrate comprises the following components in percentage by weight:
4% of fluxapyroxad, 20% of lufenuron, 25% of cyclohexane (solvent), 3% of agro-emulsion No. 600 (commercial, emulsifier), 5% of castor oil polyethylene glycol condensation (emulsifier), 4% of glycerol (antifreeze) and the balance of xylene to 100%.
The preparation method comprises the following steps: and (3) fully mixing the active ingredients, various auxiliary agents and dimethylbenzene according to a proportion, adding the mixture into a mixing kettle, and uniformly stirring to obtain 24% fluxapyroxad-lufenuron missible oil.
The embodiment is applied to control of tomato cotton bollworms, enters the initial period of pests, and is sprayed by adding water with different concentrations. The control effect is shown in the following table 4.
Table 4 field effect of 24% fluxapyroxad lufenuron emulsifiable concentrate for controlling tomato bollworm
As can be seen from Table 4, the synergistic effect of the fluxapyroxad and lufenuron is obvious after being mixed, the control effect on tomato bollworms is obviously better than that of a single agent, and the dosage of the active ingredients is obviously reduced.
Example 5
24% Of fluxapyroxad-hexaflumuron water dispersible granule comprises the following components in percentage by weight:
4% of fluxazolamide, 20% of hexaflumuron, 5% of alkyl naphthalene sulfonate formaldehyde condensate (dispersing agent), 5% of sodium lignin sulfonate (dispersing agent), 2% of methylene dinaphthalene sulfonate sodium (wetting agent), 3% of ammonium sulfate (disintegrating agent), 30% of white carbon black (filler) and 100% of calcium carbonate (filler).
The preparation method comprises the following steps: the active ingredients, sodium alkyl naphthalene sulfonate formaldehyde condensate, wetting agent, disintegrating agent and filler are fully mixed according to a proportion, crushed to a particle size of 5 mu m by a jet mill to obtain mother powder, and the mother powder and sodium lignin sulfonate are fully mixed, granulated, dried and sieved to obtain 24% fluxazolamide-hexaflumuron water dispersible granules.
The embodiment is applied to control cabbage asparagus caterpillar, enters the initial period of pest occurrence, and is sprayed by adding water with different concentrations. The control effect is shown in the following table 5.
Table 5 effects of 24% Fusoxazolamide and hexaflumuron water dispersible granule on preventing cabbage beet armyworm in field
As can be seen from Table 5, the synergistic effect of the mixed fluxapyroxad and the hexaflumuron is obvious, the prevention and control effect on cabbage looper is obviously better than that of a single agent, and the dosage of the active ingredients is obviously reduced.
Example 6
22% Of a fluxapyroxad-diflubenzuron suspending agent comprises the following components in percentage by weight:
2% of fluxazolamide, 20% of diflubenzuron, 5% of alkyl naphthalene sulfonate sodium formaldehyde condensate (dispersing agent), 3% of castor oil polyoxyethylene ether (emulsifying agent), 5% of fatty alcohol polyoxyethylene ether (emulsifying agent), 3% of methylene dinaphthyl sulfonate sodium (wetting agent), 2% of xanthan gum (thickening agent), 4% of glycerol (antifreeze agent) and the balance of water to 100%.
The preparation method comprises the following steps: the active ingredients, various auxiliary agents and water are fully and uniformly mixed according to a proportion, and the mixture is put into a sand mill and ground to the particle size of 5 mu m, thus preparing the 22% fluxapyroxad-diflubenzuron suspending agent.
The embodiment is applied to preventing and controlling corn borers, and spraying water with different concentrations at the initial stage of the occurrence of the corn large horn mouth pests. The control effect is shown in Table 6 below.
Table 6 field effect of 22% Fuxazolamide-diflubenzuron suspension for controlling corn borer
As can be seen from Table 6, the synergistic effect of the fluxapyroxad and the diflubenzuron is obvious after being mixed, the control effect on corn borer is obviously better than that of a single agent, and the dosage of the active ingredients is obviously reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. The insecticidal composition containing the fluxazole amide is characterized in that the insecticidal composition is one combination of the fluxazole amide and lufenuron, the fluxazole amide and hexaflumuron, and the fluxazole amide and the diflubenzuron;
The weight ratio of the fluxapyroxad to the lufenuron is 1:1-1:20; the weight ratio of the fluxapyroxad to the hexaflumuron is 1:1-1:10; the weight ratio of the fluorooxazamide to the diflubenzuron is 1:2-1:20.
2. Use of the pesticidal composition containing fluxapyroxad according to claim 1 for preparing pesticidal pesticides.
3. The use according to claim 2, wherein the pesticidal pesticide is for controlling lepidopteran pests and sucking mouth parts pests.
4. An insecticidal pesticide containing the fluorooxazamide, which is characterized by comprising the insecticidal composition containing the fluorooxazamide according to claim 1, wherein the mass percentage of the insecticidal composition accounts for 1-95% of the total pesticide, and is preferably 10-80%.
5. The insecticidal pesticide containing fluxapyroxad according to claim 4, wherein the specific formulation of the insecticidal pesticide is one of wettable powder, dispersible oil suspension, suspending agent, suspended seed coating, suspoemulsion, water dispersible granule, emulsifiable concentrate, aqueous emulsion and microemulsion.
6. Use of the pesticidal pesticides containing fluorooxazamide according to claim 5 for controlling lepidopteran pests and sucking mouth parts pests.
7. The use according to claim 6, wherein the lepidopteran pest is at least one of cotton bollworm, asparagus caterpillar, armyworm, spodoptera frugiperda, plutella xylostella, corn borer, peach borer, chilo suppressalis, cnaphalocrocis medinalis.
8. The use according to claim 6, wherein the sucking mouth set pest is at least one of wheat aphid, cotton aphid, corn aphid, bean aphid, potato aphid, apple cotton aphid, tomato white fly, lime plant hopper, brown plant hopper, eichhornia crassipes.
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