CN117814244A - Synergistic insecticidal composition containing Benzpyrimoxan and application thereof - Google Patents
Synergistic insecticidal composition containing Benzpyrimoxan and application thereof Download PDFInfo
- Publication number
- CN117814244A CN117814244A CN202311811958.4A CN202311811958A CN117814244A CN 117814244 A CN117814244 A CN 117814244A CN 202311811958 A CN202311811958 A CN 202311811958A CN 117814244 A CN117814244 A CN 117814244A
- Authority
- CN
- China
- Prior art keywords
- benzpyrimoxan
- neonicotinoid insecticide
- aphid
- insecticide
- composition containing
- 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.)
- Pending
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- ZYXYTGQFPZEUFX-UHFFFAOYSA-N benzpyrimoxan Chemical compound O1C(OCCC1)C=1C(=NC=NC=1)OCC1=CC=C(C=C1)C(F)(F)F ZYXYTGQFPZEUFX-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000000203 mixture Substances 0.000 title claims abstract description 41
- 230000000749 insecticidal effect Effects 0.000 title claims abstract description 26
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 26
- 239000002917 insecticide Substances 0.000 claims abstract description 33
- 239000000575 pesticide Substances 0.000 claims abstract description 30
- 239000005941 Thiamethoxam Substances 0.000 claims abstract description 29
- NWWZPOKUUAIXIW-FLIBITNWSA-N thiamethoxam Chemical compound [O-][N+](=O)\N=C/1N(C)COCN\1CC1=CN=C(Cl)S1 NWWZPOKUUAIXIW-FLIBITNWSA-N 0.000 claims abstract description 29
- 239000005906 Imidacloprid Substances 0.000 claims abstract description 27
- YWTYJOPNNQFBPC-UHFFFAOYSA-N imidacloprid Chemical group [O-][N+](=O)\N=C1/NCCN1CC1=CC=C(Cl)N=C1 YWTYJOPNNQFBPC-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229940056881 imidacloprid Drugs 0.000 claims abstract description 27
- 239000004480 active ingredient Substances 0.000 claims abstract description 25
- YKBZOVFACRVRJN-UHFFFAOYSA-N dinotefuran Chemical compound [O-][N+](=O)\N=C(/NC)NCC1CCOC1 YKBZOVFACRVRJN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 241000607479 Yersinia pestis Species 0.000 claims abstract description 18
- WCXDHFDTOYPNIE-RIYZIHGNSA-N (E)-acetamiprid Chemical compound N#C/N=C(\C)N(C)CC1=CC=C(Cl)N=C1 WCXDHFDTOYPNIE-RIYZIHGNSA-N 0.000 claims abstract description 3
- PGOOBECODWQEAB-UHFFFAOYSA-N (E)-clothianidin Chemical compound [O-][N+](=O)\N=C(/NC)NCC1=CN=C(Cl)S1 PGOOBECODWQEAB-UHFFFAOYSA-N 0.000 claims abstract description 3
- CFRPSFYHXJZSBI-DHZHZOJOSA-N (E)-nitenpyram Chemical compound [O-][N+](=O)/C=C(\NC)N(CC)CC1=CC=C(Cl)N=C1 CFRPSFYHXJZSBI-DHZHZOJOSA-N 0.000 claims abstract description 3
- HOKKPVIRMVDYPB-UVTDQMKNSA-N (Z)-thiacloprid Chemical compound C1=NC(Cl)=CC=C1CN1C(=N/C#N)/SCC1 HOKKPVIRMVDYPB-UVTDQMKNSA-N 0.000 claims abstract description 3
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Classifications
-
- 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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a synergistic insecticidal composition containing Benzpyrimoxan and application thereof, and belongs to the technical field of pesticide compounding. The synergistic insecticidal composition containing Benzpyrimoxan comprises the active ingredient of any one combination of Benzpyrimoxan and a neonicotinoid insecticide, wherein the neonicotinoid insecticide is imidacloprid, acetamiprid, thiamethoxam, clothianidin, dinotefuran, thiacloprid, nitenpyram and imidaclothiz; the weight ratio of the Benzpyrimoxan to the neonicotinoid insecticide is 20:1-1:20. The insecticidal composition is an environment-friendly insecticide, is easy to degrade in the environment, is safe to crops, has a synergistic effect under a certain proportion, and has the advantages of reducing the dosage of the insecticide, improving the control effect, delaying the occurrence and development of the insecticide resistance and the insecticide resistance of pests, and the like.
Description
Technical Field
The invention belongs to the technical field of pesticide compounding, and particularly relates to a synergistic insecticidal composition containing Benzpyrimoxan and application thereof.
Background
In recent years, with the change of cultivation and cultivation system, the occurrence degree of pests is increased year by year, and the crop yield and quality are seriously affected. 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.
Benzpyrimoxan (structural formula shown in FIG. 1) is a novel pesticide of arylalkoxypyrimidine structure developed by Japanese pesticide Co., ltd., CAS registry number: 1449021-97-9; the molecular formula: c (C) 16 H 15 F 3 N 2 O 3 . Benzpyrimoxan has a unique chemical structure, shows higher insecticidal activity on pests with reduced sensitivity of the existing pesticides, has no cross resistance with the existing pesticides such as fipronil, ethofenprox, buprofezin, imidacloprid and the like, has a longer lasting period, can effectively control the pests such as rice planthoppers, leafhoppers and the like, has little influence on non-target organisms such as powdery insects, beneficial arthropods and the like, and has no mutagenicity.
The neonicotinoid insecticide is a broad-spectrum insecticide with low dosage, high efficiency, safety and good systemic property, has the effects of contact killing and stomach poisoning, belongs to an agonist of insect nicotinic acetylcholine receptors (nAChRs), and has higher biological activity on various target pests such as hemiptera, coleoptera, lepidoptera and the like by selectively controlling the nicotinic acetylcholine esterase receptors of the insect nervous system and blocking the normal conduction of the insect central nervous system, so that the insect is paralyzed and dead.
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 existing in the prior art, the invention aims to provide a synergistic insecticidal composition containing Benzpyrimoxan and application thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the synergistic insecticidal composition containing Benzpyrimoxan comprises the active ingredient of any one combination of Benzpyrimoxan and a neonicotinoid insecticide, wherein the neonicotinoid insecticide is imidacloprid, acetamiprid, thiamethoxam, clothianidin, dinotefuran, thiacloprid, nitenpyram and imidaclothiz; the weight ratio of the Benzpyrimoxan to the neonicotinoid insecticide is 20:1-1:20, and preferably, the weight ratio of the Benzpyrimoxan to the neonicotinoid insecticide is 10:1-1:10.
In a specific embodiment, the neonicotinoid insecticide is one of imidacloprid, thiamethoxam, dinotefuran.
In a specific embodiment, when the neonicotinoid insecticide is thiamethoxam, the weight ratio of Benzpyrimoxan to neonicotinoid insecticide is 5:1 to 1:10; when the neonicotinoid insecticide is imidacloprid, the weight ratio of Benzpyrimoxan to the neonicotinoid insecticide is 10:1-1:5; when the neonicotinoid insecticide is dinotefuran, the weight ratio of Benzpyrimoxan to the neonicotinoid insecticide is 10:1-1:10.
The application of the composition in preparing insecticidal pesticides.
An insecticidal pesticide, the active ingredients of which comprise the composition.
In a specific embodiment, the amount of Benzpyrimoxan and the amount of the neonicotinoid insecticide is 1-95%, preferably 10-80% by mass of the total amount.
In general, the insecticidal composition of the present invention comprises 1 to 95 parts by weight of an active ingredient and 5 to 99 parts by weight of a pesticidal conventional adjuvant; the pesticide conventional auxiliary agent can be a carrier, a surfactant and the like.
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 surfactant may include an emulsifier, dispersant or wetting agent, which may be ionic or nonionic. Examples which may be mentioned are salts of polyacrylic acid, lignosulfonates, salts of phenolsulfonic acid or naphthalene sulfonic acid, polymers of ethylene oxide with aliphatic alcohols or with aliphatic acids or with aliphatic amines or 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-, heptadecyl-and stearyl alcohols and sulfated fatty alcohol glycol ethers, furthermore condensates of naphthalene or naphthalene sulfonic 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 ether acetals, sorbitol esters, lignin sulfite, and also proteins, polysaccharides (e.g. methylcellulose), vinyl alcohol, hydrophobically modified polyvinyl alcohol carboxylates, polyvinyl pyrrolidone, modified 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 pesticidal pesticides may also contain various other components such as protective colloids, binders, thickeners, thixotropic agents, penetrants, stabilizers, chelating agents, film forming agents, dyes, colorants and polymers.
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.
In a specific embodiment, the formulation of the insecticidal pesticide is one of emulsifiable concentrate, suspending agent, microemulsion, suspoemulsion, aqueous emulsion, dispersible oil suspending agent, wettable powder, water dispersible granule and suspension seed coating agent.
Briefly, the pesticide of the present invention can be made by mixing the composition of the present invention with solid and liquid additives conventionally used in prior art formulations, for example:
in a specific embodiment, a 15% benzpyrimoxanil thiamethoxam water dispersible granule is provided, which comprises the following components (in weight percent):
5% of Benzpyrimoxan, 10% of thiamethoxam, 5% of sodium alkyl naphthalene sulfonate formaldehyde condensate (dispersing agent), 5% of sodium lignin sulfonate (dispersing agent), 2% of sodium methylene dinaphthyl sulfonate (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 the 15% Benzpyrimoxanil thiamethoxam water dispersible granule.
In a specific example, a 15% benzpyrimoxanil imidacloprid wettable powder, the composition of the components (in weight percent):
10% of Benzpyrimoxan, 5% of imidacloprid, 2% of sodium alkyl naphthalene sulfonate formaldehyde condensate (dispersing agent), 3% of sodium lignin sulfonate (dispersing agent), 3% of sodium dodecyl sulfate (wetting agent), 20% of white carbon black (filler) and 100% of kaolin (filler).
The preparation method comprises the following steps: the active ingredients, various auxiliary agents and fillers are fully and uniformly mixed according to a proportion, and the mixture is crushed by a superfine crusher to prepare 15% Benzpyrimoxan imidacloprid wettable powder.
In a specific example, 20% benzpyrimoxanil dinotefuran suspending agent, the composition of the components (in weight percent) is as follows:
10% of Benzpyrimoxan, 10% of dinotefuran, 5% of alkyl naphthalene sulfonate 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: and (3) fully and uniformly mixing the active ingredients, various auxiliary agents and water according to a proportion, putting into a sand mill, and grinding to a particle size of 5 mu m to obtain the 20% Benzpyrimoxanil dinotefuran suspending agent.
The insecticidal pesticide is applied to controlling piercing-sucking or rasping sucking mouthpart pests.
In a specific embodiment, the sucking mouth set pest is at least one of wheat aphid, cotton aphid, corn aphid, bean aphid, potato aphid, apple cotton aphid, apple yellow aphid, peach aphid, tomato white fly, bemisia tabaci, brown planthopper, holiday eye lesser leafhopper, and the sucking mouth set pest is thrips.
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 provided by the invention are obviously synergistic with the neonicotinoid insecticide. The synergistic effect is expressed by reduced application amount, faster and longer insecticidal action.
Advantages of the technical proposal of the invention
(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 insecticidal composition can effectively prevent and kill wheat aphids, cotton aphids, corn aphids, bean aphids, potato aphids, apple cotton aphids, apple yellow aphids, peach aphids, tomato white flies, bemisia tabaci, laodelphax striatellus, brown planthoppers, eichhornia crassipes, thrips and other piercing-sucking type and rasping type mouthparts pests, has synergistic effect under a certain proportion, and has the advantages of reducing the dosage of medicaments, improving the control effect, delaying the occurrence and development of the drug resistance and the drug resistance of the pests and the like.
Drawings
FIG. 1 is a structural formula of Benzpyrimoxan.
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 synergistic composition containing Benzpyrimoxan and thiamethoxam comprises the active ingredients of Benzpyrimoxan and thiamethoxam, wherein the weight ratio of Benzpyrimoxan to thiamethoxam is 20:1-1:20; preferably, the weight ratio of Benzpyrimoxan to thiamethoxam is 5:1 to 1:10.
Toxicity effects of Benzpyrimoxanil and thiamethoxam on Laodelphax striatellus
The method is characterized in that the method adopts the Laodelphax striatellus as a test material and adopts a glass tube film method to measure the toxicity effects of Benzpyrimoxan, thiamethoxam and mixed preparations thereof.
Single dose virulence assay:
the glass tube method is adopted, and the test reagent (comprising Benzpyrimoxan and thiamethoxam) is firstly prepared into 5 concentration gradients by using acetone. 200. Mu.L of the diluted medicinal liquid was pipetted into a glass tube (inner surface area 36 cm) having a diameter of 2cm and a height of 5.2cm 2 ) Immediately lay flat on a tabletop to roll uniformly, and use the acetone for toxicity measurement after the acetone volatilizes. Control aloneAnd (5) acetone treatment. Selecting and testing Laodelphax striatellus with consistent health, placing at least 30 Laodelphax striatellus in each prepared film tube, checking mortality after 48h under indoor normal feeding condition (temperature 18-25deg.C, relative humidity about 50% -70%, and illumination of 17L: 7D), wherein only one leg is or is completely motionless, checking mortality as effective measurement with control mortality less than 10%, correcting with control mortality, repeating for 3 times, using DSP to obtain virulence regression equation, middle lethal concentration (LC 50 ) And 95% confidence interval.
Determination of combined toxicity of the mixture:
based on the single dose toxicity measurement, the Benzpyrimoxan and thiamethoxam for compounding are respectively mixed according to LC 50 The value dose is respectively set up into 9 ratios of 20:1, 10:1, 5:1, 2:1, 1:1, 1:2, 1:5, 1:10 and 1:20 according to the weight ratio, 5 series concentration gradients are prepared according to different ratios, and each treatment is repeated for 3 times. Through linear regression analysis between the death rate of the insect population and the logarithmic value of the concentration of the agent, the medium-concentration LC of the mixed agent for killing the laodelphax striatellus is obtained 50 Values and CTC values.
Statistical analysis of data
The test data are statistically analyzed by Microsoft Excel 2016 and DPS data processing platform to calculate LC of each agent 50 Value, 95% confidence limit. 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 Reagent LC 50 )×100
Actual toxicity index ati= (Standard agent LC) 50 Compounding LC 50 )×100
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.
The virulence effects of Benzpyrimoxanil and thiamethoxam in combination on Laodelphax striatellus are shown in Table 1.
TABLE 1 toxicity determination results of Benzpyrimoxan, thiamethoxam and their blends on Laodelphax striatellus
As can be seen from Table 1, benzpyrimoxan, thiamethoxam and their mixtures have higher indoor toxicity to Laodelphax striatellus, wherein when the ratio of Benzpyrimoxan to thiamethoxam is between 5:1 and 1:10, the co-toxicity coefficient to Laodelphax striatellus is above 120, which indicates that the two pesticides have good synergistic effect under the ratio.
Example 2
15% of Benzpyrimoxanil thiamethoxam water dispersible granule, which comprises the following components in percentage by weight:
5% of Benzpyrimoxan, 10% of thiamethoxam, 5% of sodium alkyl naphthalene sulfonate formaldehyde condensate (dispersing agent), 5% of sodium lignin sulfonate (dispersing agent), 2% of sodium methylene dinaphthyl sulfonate (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 the 15% Benzpyrimoxanil thiamethoxam water dispersible granule.
15% Benzpyrimoxan thiamethoxam water dispersible granule with field control effect on rice planthoppers
The 15% Benzpyrimoxanil thiamethoxam water dispersible granule of the example 2 is used for controlling rice planthoppers in the field, enters the initial stage of the occurrence of the nymphs of the rice planthoppers, and is sprayed by adding water with different concentrations. The control effect is shown in the following table 2.
Table 2 15%Benzpyrimoxan thiamethoxam water dispersible granule for preventing and controlling rice planthoppers in field
As can be seen from Table 2, the synergistic effect of Benzpyrimoxanil and thiamethoxam is obvious after being mixed, the control effect on rice planthoppers is obviously better than that of single dosage, and the dosage of active ingredients is obviously reduced.
Example 3
The synergistic composition containing Benzpyrimoxan and imidacloprid comprises the active ingredients of Benzpyrimoxan and imidacloprid in a weight ratio of 20:1-1:20; preferably, the weight ratio of Benzpyrimoxan to imidacloprid is 10:1 to 1:5.
Toxicity effects of Benzpyrimoxan and Imidacloprid on Tributis graminis
The method is characterized in that the seedling soaking method of Wang Lihua (2008) is adopted by taking the cereal aphid as a test material and slightly modified, and the toxicity effects of Benzpyrimoxan (A), imidacloprid (B) and mixed preparations thereof are measured.
Single dose toxicity determination method:
the method comprises the steps of preparing a mother solution of 10000mg/kg of a reagent to be tested (comprising an active ingredient A and an active ingredient B) by acetone, and preparing 5 concentration gradients by a solution of 0.1% Tween-80 according to an equal ratio. Collecting wheat seedlings, cleaning the roots, wrapping the roots with wet absorbent cotton, immersing the wheat seedlings in a series of liquid medicine with concentration for 10s, taking out, immersing the wheat seedlings in a 0.1% Tween-80 aqueous solution for blank, and sucking off the excessive liquid medicine with filter paper. The test adopts the method that the wheat seedlings with aphids are inoculated indoors in advance and the size and the body shape are selected and remained by a writing brushThe test was performed on the thus obtained Aphis citricola. For each 3 replicates, DSP was used to determine virulence regression equation, lethal medium concentration (LC 50 ) And 95% confidence interval.
Determination of combined toxicity of the mixture:
based on single-dose toxicity measurement, the active ingredient A (Benzpyrimoxan) and the active ingredient B (imidacloprid) to be mixed are respectively provided with 9 proportions of 20:1, 10:1, 5:1, 2:1, 1:1, 1:2, 1:5, 1:10 and 1:20 according to weight proportion by a pre-test experiment, 5 series concentration gradients are prepared according to different proportions, and each treatment is repeated for 3 times. Through linear regression analysis between the death rate of the insect mouth and the logarithmic value of the concentration of the medicament, the medium-concentration LC of the mixed medicament for killing the aphis sitalis is obtained 50 Values and CTC values.
Data analysis and statistics are as in example 1.
The results are shown in Table 3.
TABLE 3 toxicity determination results of Benzpyrimoxan, imidacloprid and their blends on Tributis graminis
As can be seen from Table 3, benzpyrimoxan, imidacloprid and their mixture have higher indoor toxicity to the aphis graminea, wherein when the ratio of Benzpyrimoxan to imidacloprid is between 10:1 and 1:5, the co-toxicity coefficient to the aphis graminea is above 120, indicating that the two pesticides have good synergistic effect under the ratio.
Example 4
15% of Benzpyrimoxan imidacloprid wettable powder, which comprises the following components in percentage by weight:
10% of Benzpyrimoxan, 5% of imidacloprid, 2% of sodium alkyl naphthalene sulfonate formaldehyde condensate (dispersing agent), 3% of sodium lignin sulfonate (dispersing agent), 3% of sodium dodecyl sulfate (wetting agent), 20% of white carbon black (filler) and 100% of kaolin (filler).
The preparation method comprises the following steps: the active ingredients, various auxiliary agents and fillers are fully and uniformly mixed according to a proportion, and the mixture is crushed by a superfine crusher to prepare 15% Benzpyrimoxan imidacloprid wettable powder.
15% Benzpyrimoxan imidacloprid wettable powder for controlling wheat aphids in field
The 15% Benzpyrimoxanil imidacloprid wettable powder of the example 4 is applied to the field for preventing and controlling wheat aphids (wheat aphid, wheat Gu Yiguan aphid and wheat binary aphid), enters the initial stage of the occurrence of the wheat aphid nymphs, and is sprayed by adding water with different concentrations. The control effect is shown in the following table 4.
TABLE 4 field effect of 15% Benzpyrimoxan imidacloprid wettable powder on controlling wheat aphids
As can be seen from Table 4, the synergistic effect of Benzpyrimoxan and imidacloprid is obvious after being mixed, the control effect on wheat aphid is obviously better than that of a single agent, and the dosage of the active ingredients is obviously reduced.
Example 5
The synergistic composition containing Benzpyrimoxan and dinotefuran comprises the active ingredients of Benzpyrimoxan and dinotefuran in a weight ratio of 20:1-1:20; preferably, the weight ratio of Benzpyrimoxanil to dinotefuran is 10:1-1:10.
Toxicity effects of Benzpyrimoxanil and dinotefuran in combination on Bemisia tabaci
The bemisia tabaci is used as a test material, and the toxicity effects of Benzpyrimoxan, dinotefuran and the mixed preparation thereof are measured by adopting a glass tube film method.
The assay and data analysis were as in example 1.
The results are shown in Table 5.
TABLE 5 toxicity determination results of Benzpyrimoxanil, dinotefuran and their blends on Bemisia tabaci
As can be seen from Table 5, benzpyrimoxanil, dinotefuran and their mixtures have high indoor toxicity to bemisia tabaci, wherein when the ratio of Benzpyrimoxanil to dinotefuran is between 10:1 and 1:10, the co-toxicity coefficient to bemisia tabaci is above 120, indicating that the two pesticides have good synergistic effect under the ratio.
Example 6
20% of Benzpyrimoxanil dinotefuran suspending agent, which comprises the following components in percentage by weight:
10% of Benzpyrimoxan, 10% of dinotefuran, 5% of alkyl naphthalene sulfonate 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: and (3) fully and uniformly mixing the active ingredients, various auxiliary agents and water according to a proportion, putting into a sand mill, and grinding to a particle size of 5 mu m to obtain the 20% Benzpyrimoxanil dinotefuran suspending agent.
20% Benzpyrimoxanil dinotefuran suspending agent for controlling tomato bemisia tabaci in field
The 20% Benzpyrimoxanil dinotefuran suspension of example 5 was applied to control tomato bemisia tabaci, where the nymphs of tomato bemisia tabaci occurred initially, and sprayed with water at various concentrations. The control effect is shown in Table 6 below.
Surface 6 20%Benzpyrimoxan dinotefuran suspending agent field effect for preventing and controlling tomato bemisia tabaci
As can be seen from Table 6, the synergistic effect of Benzpyrimoxanil and dinotefuran is obvious after being mixed, the control effect on tomato bemisia tabaci is obviously better than that of a single dose, and the dosage of 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 (10)
1. The synergistic insecticidal composition containing Benzpyrimoxan is characterized in that the effective component is any one combination of Benzpyrimoxan and a neonicotinoid insecticide, wherein the neonicotinoid insecticide is imidacloprid, acetamiprid, thiamethoxam, clothianidin, dinotefuran, thiacloprid, nitenpyram and imidaclothiz; the weight ratio of the Benzpyrimoxan to the neonicotinoid insecticide is 20:1-1:20.
2. The synergistic insecticidal composition containing Benzpyrimoxan according to claim 1, wherein the weight ratio of Benzpyrimoxan to neonicotinoid insecticide is 10:1 to 1:10.
3. The synergistic insecticidal composition containing Benzpyrimoxan according to claim 2, wherein the neonicotinoid insecticide is one of imidacloprid, thiamethoxam and dinotefuran.
4. A synergistic insecticidal composition containing Benzpyrimoxan as claimed in claim 3, wherein when the neonicotinoid insecticide is thiamethoxam, the weight ratio of Benzpyrimoxan to neonicotinoid insecticide is from 5:1 to 1:10; when the neonicotinoid insecticide is imidacloprid, the weight ratio of Benzpyrimoxan to the neonicotinoid insecticide is 10:1-1:5; when the neonicotinoid insecticide is dinotefuran, the weight ratio of Benzpyrimoxan to the neonicotinoid insecticide is 10:1-1:10.
5. Use of a composition according to any one of claims 1 to 4 for the preparation of an insecticidal pesticide.
6. An insecticidal pesticide, characterized in that the active ingredient comprises a composition according to any one of claims 1 to 4.
7. The pesticidal pesticide according to claim 6, wherein the mass percentage of Benzpyrimoxan and the neonicotinoid insecticide is 1-95% of the total amount.
8. The pesticidal pesticide according to claim 7, wherein the formulation of the pesticidal pesticide is one of emulsifiable concentrates, suspending agents, microemulsions, suspoemulsions, aqueous emulsions, dispersible oil suspensions, wettable powders, water dispersible granules, and suspended seed coating.
9. Use of the pesticidal pesticide of claim 8 for controlling piercing-sucking or rasping oral pests.
10. The use according to claim 9, wherein the pest is at least one of wheat aphid, cotton aphid, corn aphid, bean aphid, potato aphid, cotton apple aphid, apple yellow aphid, peach aphid, tomato white fly, bemisia tabaci, laodelphax striatellus, brown planthopper, eichhornia crassipes, and thistle horse.
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