CN110495463B - Synergistic pesticide composition containing trifluoro-benzene pyrimidine and application thereof - Google Patents
Synergistic pesticide composition containing trifluoro-benzene pyrimidine and application thereof Download PDFInfo
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- CN110495463B CN110495463B CN201910850643.8A CN201910850643A CN110495463B CN 110495463 B CN110495463 B CN 110495463B CN 201910850643 A CN201910850643 A CN 201910850643A CN 110495463 B CN110495463 B CN 110495463B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
Abstract
The invention discloses a synergistic pesticide composition containing trifluorophenylpyrimidine and application thereof, belonging to the technical field of pesticides. The pesticide composition comprises A, B two active ingredients, wherein the active ingredient A is trifluorobenzene pyrimidine, and the active ingredient B is one of botanical pesticides matrine, azadirachtin and pyrethrin. The pesticide composition has completely different action mechanisms of the active component A and the active component B, can realize synergistic effect on pests by compounding, improves the control effect, reduces the pesticide use amount, delays the generation of pesticide resistance, reduces the risk of pesticide resistance, and can be used for preventing and controlling pests with piercing-sucking mouthparts, such as wheat aphids, cotton aphids, corn aphids, bean aphids, potato aphids, woolly apple aphids, tomato whitefly, laodelphax striatellus, brown planthopper, empoasca vitis and the like.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a synergistic pesticide composition containing trifluorophenylpyrimidine and application thereof.
Background
In recent years, with changes in farming and cultivation systems, the degree of pest occurrence has increased year by year, and crop yield and quality have been seriously affected. Chemical insecticide is the most economic and effective means in pest control, and the application of the insecticide to pest control has extremely important significance in recovering crop yield loss and improving commodity and quality of agricultural products.
Trifluzopyrimidine (triflumzopyrim) is a novel mesoionic insecticide developed by DuPont. The compound acts on acetylcholine receptors, is different from neonicotinoid insecticides, and is the only compound which plays an inhibiting role in the insecticides acting on the nicotinic acetylcholine receptors, namely the nicotinic acetylcholine receptor inhibitor. After insect poisoning, the insect is still without excitation or spasm, and then paralysis and paralysis are carried out until death. It has good internal absorption conductivity, permeability and rain wash resistance. The trifluoropyrimidine has high efficiency and broad spectrum, has good control effect on lepidoptera and homoptera pests, and can be used for crops such as cotton, rice, corn, soybean and the like.
The botanical pesticide is a pesticide with active ingredients mainly derived from plants, has a self-owned degradation way for the botanical pesticide in nature, is not easy to cause harm to the environment, has short safety interval period and is not easy to cause phytotoxicity to crops. The action mechanism of the plant-derived pesticide on the pests is greatly different from that of the conventional chemical pesticide, and most of the plant-derived pesticides can act on a plurality of organ systems of the pests, so that the pest is prevented from forming drug resistance.
In the process of applying the pesticide to control pests, a single variety or a single action mode of chemical pesticide is continuously used for a long time at a high dose, so that the problems of pesticide resistance, resistance evolution and the like of the pests are easily caused. The reasonable compounding or mixing of the pesticide compound has the advantages of reducing the using amount of the pesticide, improving the control effect, delaying the occurrence and development of drug resistance and drug resistance of pests and the like, and is one of the most effective methods for solving the problems.
At present, no report related to the compound use of trifluoro-benzene pyrimidine and plant-derived pesticides matrine, azadirachtin and pyrethrin for preventing and controlling piercing-sucking mouthparts pests such as wheat aphid, cotton aphid, corn aphid, bean aphid, potato aphid, apple aphid, tomato whitefly, laodelphax striatellus, brown planthopper, empoasca vitis and the like exists.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an insecticide composition containing trifluorophenylpyrimidine and a plant-derived pesticide, so that wheat aphids, cotton aphids, bean aphids, corn aphids, potato aphids, woolly apple aphids, tomato whitefly, laodelphax striatellus, brown planthopper, empoasca vitis and the like which are piercing-sucking mouthparts pests of field crops, vegetables, fruit trees and the like can be effectively prevented and killed, the application amount of the pesticide is reduced, the safety of crops is improved, and the problems of pesticide resistance of pests and the like are solved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the synergistic pesticide composition containing trifluoro-benzene pyrimidine comprises an effective active ingredient A and an active ingredient B; wherein the active component A is trifluorobenzene pyrimidine, and the active component B is one of botanical pesticides matrine, azadirachtin and pyrethrin.
On the basis of the scheme, the weight ratio of the active component A to the active component B is 1-100: 1-100.
On the basis of the scheme, the weight ratio of the active component A to the active component B is 1-60: 1-20.
On the basis of the scheme, the weight ratio of the active component A to the active component B is 1-40: 1-10.
Within the limited weight ratio, the active component A and the active component B are mixed to obtain the technical effect of synergy.
On the basis of the scheme, the mass percentage of the active ingredient A and the active ingredient B in the pesticide composition accounts for 1-95% of the total amount.
On the basis of the scheme, the mass percentage of the active ingredient A and the active ingredient B in the pesticide composition accounts for 1-20% of the total amount.
On the basis of the scheme, the synergistic insecticidal composition further comprises a conventional pesticide auxiliary agent, and the conventional pesticide auxiliary agent can be a carrier, a surfactant and the like.
The carrier represents an organic or inorganic, natural or synthetic substance. They facilitate the application of the active ingredient, the carrier being generally inert and must be agriculturally acceptable, in particular for the treated plant. The carrier may be a solid, such as a clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer, or the like; or liquids such as water, alcohols, ketones, petroleum distillates, aromatic or waxy hydrocarbons, chlorinated hydrocarbons, liquefied gases, etc.
The surfactant may include an emulsifier, dispersant or wetting agent, which may be ionic or non-ionic. Examples which may be mentioned are salts of polyacrylic acids, lignosulphonates, salts of phenolsulphonic or naphthalenesulphonic acids, polymers of ethylene oxide with aliphatic alcohols or with aliphatic acids or with aliphatic amines and substituted phenols, in particular alkylphenols or arylphenols, sulphosuccinates, taurine derivatives, in particular taurine alkyl esters, and phosphoric esters of alcohols or polyhydroxyethylated phenols, alkylsulfonates, alkylarylsulphonates, alkylsulfates, lauryl ether sulphates, fatty alcohol sulphates, and sulphated hexadec, heptadeca-and octadecanols and sulphated fatty alcohol glycol ethers, and furthermore condensates of naphthalene or naphthalenesulphonic acids with phenol and formaldehyde, polyoxyethylene octylphenyl ether, ethoxylated isooctylphenol, octylphenol or nonylphenol, alkylphenyl polyglycol ethers, tributylphenyl polyglycol ether, tristearylphenyl polyglycol ether, polystearylphenyl polyglycol ether, Alkylaryl polyether alcohols, alcohol and fatty alcohol/ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol esters, lignosulfite waste liquors, and also proteins, denatured proteins, polysaccharides (e.g. methylcellulose), hydrophobically modified starches, polyvinyl alcohols, polycarboxylates, polyalkoxylates, polyvinylamines, polyvinylpyrrolidone and copolymers thereof. At least one surfactant is required to be present to facilitate dispersion of the active ingredients in water and to facilitate their proper application to the plant.
The pesticidal composition may also contain various other components such as protective colloids, binders, thickeners, thixotropic agents, penetrants, stabilizers, chelating agents, film formers, dyes, colorants, and polymers.
The insecticidal composition may be diluted by the user prior to use or used directly. The formulation can be prepared by conventional processing methods, i.e., mixing the active substance with a liquid solvent or solid carrier, and adding one or more surfactants such as dispersants, stabilizers, wetting agents, binders, defoamers, etc.
On the basis of the scheme, the specific preparation of the insecticidal composition is missible oil, a suspending agent, a microemulsion, a suspoemulsion, an emulsion in water, a dispersible oil suspending agent, wettable powder, a water dispersible granule and a suspension seed coating agent.
For example, the raw materials, the safener, the solvent and the emulsifier in the formula are added into a mother liquor preparation kettle to prepare a uniform oil phase, deionized water, an antifreeze agent and the like are uniformly mixed and injected into a product preparation kettle, and the mixture is uniformly mixed by high-speed stirring to prepare the transparent or semitransparent microemulsion product of the composition.
In short, the compositions of the present invention may be mixed with solid and liquid additives conventionally used in prior art formulations.
The synergistic pesticide composition containing the trifluorobenzene pyrimidine is applied to preventing and controlling piercing-sucking mouthpart pests of field crops, vegetables, fruit trees and the like.
On the basis of the scheme, the pests with the piercing-sucking mouthparts are wheat aphids, cotton aphids, corn aphids, bean aphids, potato aphids, woolly apple aphids, tomato whiteflies, laodelphax striatellus, brown planthoppers or empoasca vitis.
The invention has the following beneficial effects:
(1) the insecticidal composition is an environment-friendly insecticide, is easy to degrade in the environment and is safe to crops.
(2) The insecticidal composition has the characteristics of convenient use and easy popularization, and has great economic and social benefits.
(3) Compared with the prior art, the insecticidal composition provided by the invention can prevent and kill common field and fruit tree crop pests such as wheat aphid, cotton aphid, corn aphid, potato aphid, empoasca vitis, apple aphid, laodelphax striatellus, brown planthopper and the like, and can also prevent and kill vegetable pests such as tomato whitefly and the like in a protected area.
(4) The pesticide composition can be applied to leaves and seeds of plants to be treated by spraying and seed treatment, and the active ingredient A and the active ingredient B are compounded to realize synergistic effect on pests and improve the control effect, wherein the synergistic effect is represented by reducing the using amount of pesticides, delaying the generation of drug resistance, reducing the risk of drug resistance and realizing faster and more lasting insecticidal action.
Detailed Description
Terms used in the present invention have generally meanings as commonly understood by one of ordinary skill in the art, unless otherwise specified.
The present invention will be described in further detail with reference to the following data in conjunction with specific examples. 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 prevention and control effects of the compound of the active ingredient A (trifluoro-fluoropyrimidine) and the active ingredient B (one of matrine, azadirachtin and pyrethrin) on pests are researched through indoor toxicity measurement.
Reagent to be tested: trifluorobenzene pyrimidine, matrine, nimbin and pyrethrin.
Respectively dissolving the raw medicines of trifluoro-benzene pyrimidine, matrine, azadirachtin and pyrethrin with acetone, respectively preparing into 10000mg/L mother liquor, and storing in a refrigerator at 4 ℃ for later use.
Test insects: and (4) the aphid of the gaeumannocarota.
The determination method comprises the following steps:
(1) indoor toxicity determination method
Taking the gloiopeltis from cereal as a test material, and determining the toxicity of the active ingredient A, the active ingredient B and the mixed preparation thereof by an insect immersion method.
Single agent virulence determination methods:
adopting a pest soaking method, firstly preparing a test reagent (comprising an active component A and an active component B) into 10000mg/L mother liquor by acetone, then preparing 5 concentration gradients by 0.1% Tween-80 solution according to an equal ratio method, and taking 0.1% Tween-80 solution as a reference. Soaking aphids and wheat seedlings into the liquid medicine for 5s, taking out, sucking redundant liquid medicine with absorbent paper, removing winged aphids, reserving wingless aphids, putting the wingless aphids into a culture dish, keeping moisture with filter paper for feeding, then putting the culture dish into an illumination incubator at 25 ℃, and investigating the number of live insects after 48 h. For each 3-time repetition of treatment, the toxicity regression equation and lethal medium concentration (LC) were obtained by DSP50) And 95% confidence intervals.
Combined virulence determination of the mixture:
on the basis of single-dose toxicity measurement, the active ingredient A (trifluorobenzene pyrimidine) and the active ingredient B (one of matrine, azadirachtin and pyrethrin) to be mixed are respectively mixed according to LC50The dosage is respectively set at 7 ratios of 40: 1, 20: 1, 10: 1, 2: 1, 1: 2 and 1: 10 according to weight ratio, 5 series concentration gradients are prepared according to different ratios, and each treatment is repeated for 3 times. Solving the lethal middle concentration LC of the mixed medicament to the gloiopeltis50Values and CTC values.
(2) Statistical analysis of data
The test data are statistically analyzed by Microsoft Excel 2016 and DPS data processing working platform, and LC of each medicament is calculated50Value, 95% confidence limit. The co-toxicity coefficient of the mixture was calculated by Sun Yunpei method (1960), and the synergistic effect of the mixture was evaluated based on the co-toxicity coefficient.
The inhibition rate of each agent was calculated according to the following formula:
mortality rate (%) is death number per total number of insects treated x 100
Corrected mortality (%) - (treatment group mortality-control group mortality)/(1-control group mortality) ] × 100
Virulence index TI ═ (standard pharmaceutical LC)50Test agent LC50)×100
The actual toxicity index ATI of the mixed preparation (standard medicament LC)50Mixed preparation LC50)×100
The theoretical toxicity index TTI of the mixed preparation is TI XPA of single A and TI XPB of single B (PA and PB are the percentage content of the effective components in the mixed preparation respectively)
Co-toxicity coefficient CTC ═ actual virulence index ATI of the mixture/theoretical virulence index TTI x 100 of the mixture
And (3) judging the synergistic effect: CTC is more than or equal to 120, and has synergistic effect; 80 < CTC < 120, which is additive effect; CTC is less than or equal to 80, and is antagonistic.
(3) Results and analysis: tables 1 to 4 show the following.
TABLE 14 determination results of toxicity of Agents on Aphis graminicola
Table 2 toxicity test results of different proportions of trifluoro-fluoropyrimidine and matrine on Aphis graminicola
Table 3 toxicity test results of different proportions of trifluoro-fluoropyrimidine and azadirachtin on Aphis graminicola
Table 4 toxicity test results of different proportions of trifluoro-fluoropyrimidine and pyrethrin on Globilzer
As can be seen from tables 1 and 2, the trifluoropyrimidine, the matrine and the mixture thereof have high indoor toxicity to the gaeumannomyces graminifolius, wherein when the ratio of the trifluoropyrimidine to the matrine is 10: 1-1: 2, the co-toxicity coefficient to the gaeumannomyces graminifolius is more than 120, and the two insecticides have good synergistic effect under the ratio.
As can be seen from tables 1 and 3, the trifluoropyrimidine, the azadirachtin and the mixture thereof have high indoor toxicity to the gaeumannomyces graminiformis, wherein when the ratio of the trifluoropyrimidine to the azadirachtin is 20: 1-1: 2, the co-toxicity coefficient to the gaeumannomyces graminiformis is more than 120, and the two insecticides have good synergistic effect under the ratio.
As can be seen from tables 1 and 4, the trifluoropyrimidine, the pyrethrin and the mixture thereof have high indoor toxicity to the gaeumannomyces graminifolius, wherein when the proportion of the trifluoropyrimidine to the pyrethrin is 2: 1-1: 10, the co-toxicity coefficient to the gaeumannomyces graminifolius is more than 120, and the two insecticides have good synergistic effect under the proportion.
Example 2
5.5% trifluoro-benzene pyrimidine matrine suspending agent
The components are as follows (the components are calculated according to the weight percentage):
5% of trifluoro-benzene pyrimidine, 0.5% of matrine, 5% of alkyl sodium naphthalene sulfonate formaldehyde condensate (dispersing agent), 3% of castor oil polyoxyethylene ether (dispersing wetting agent), 5% of fatty alcohol polyoxyethylene ether (dispersing wetting agent), 3% of methylene dinaphthalene sodium sulfonate (wetting agent), 2% of xanthan gum (thickening agent), 4% of glycerol (anti-freezing agent) and water, wherein the water is supplemented to 100%.
The preparation method comprises the following steps: mixing the active ingredients, various adjuvants and water at a certain proportion, grinding with sand mill to particle size of 5 μm to obtain 5.5% trifluorophenylpyrimidine-matrine suspension.
The pesticide composition is applied to control wheat aphids, enters the early stage of pest occurrence, and is sprayed by adding water at different concentrations. The control effect is shown in table 5.
TABLE 5 field Effect of different preparations of Triflufenapyr and matrine for preventing and controlling wheat aphid
As shown in Table 5, after the trifluorobenzene pyrimidine and the matrine are mixed, the synergistic effect is obvious, the control effect on wheat aphid is obviously better than that of a single dose, and the dosage of the effective components is obviously reduced.
Example 3
11% trifluoro-benzene pyrimidine-nimbin water dispersible granule
The components are as follows (the components are calculated according to the weight percentage):
10% of trifluoro-benzene pyrimidine, 1% of azadirachtin, 5% of alkyl sodium naphthalene sulfonate formaldehyde condensate (dispersant), 5% of sodium lignosulfonate (dispersant), 2% of methylene dinaphthyl sulfonate (wetting agent), 3% of ammonium sulfate (disintegrant), 30% of white carbon black (filler) and the balance of calcium carbonate (filler) to 100%.
The preparation method comprises the following steps: mixing the active ingredients, alkyl naphthalene sulfonic acid sodium formaldehyde condensate, wetting agent, disintegrating agent and filler in proportion, pulverizing to particle size of 5 μm by jet mill to obtain mother powder, mixing the mother powder with sodium lignosulfonate, granulating, oven drying, and sieving to obtain 11% aqueous dispersible granule of trifluorophenylpyrimidine and azadirachtin.
The pesticide composition is applied to control wheat aphids, enters the early stage of pest occurrence, and is sprayed by adding water at different concentrations. The control effect is shown in table 6.
TABLE 6 field Effect of different preparations of Triflufenapyr and azadirachtin on wheat aphid control
As can be seen from Table 6, after the trifluorobenzene pyrimidine and the azadirachtin are mixed, the synergistic effect is obvious, the control effect on wheat aphid is obviously better than that of a single dose, and the dosage of the effective components is obviously reduced.
Example 4
10% trifluoro-benzene pyrimidine pyrethrin emulsion
The components are as follows (the components are calculated according to the weight percentage):
5% of trifluoro-fluoropyrimidine, 5% of pyrethrin, 25% of cyclohexane (solvent), 3% of agricultural milk No. 600 (the agricultural milk No. 600 is a conventional product in the prior art and can be purchased in the market) (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: mixing the active components, various assistants and water in certain proportion, adding into a mixing kettle and stirring to obtain 10% concentration emulsified oil of trifluoro-fluoropyrimidine and pyrethrin.
The pesticide composition is applied to control wheat aphids, enters the early stage of pest occurrence, and is sprayed by adding water at different concentrations. The control effect is shown in table 7.
TABLE 7 field Effect of different formulations of Triflufenapyr and pyrethrin on wheat aphid control
As can be seen from Table 7, after the trifluorobenzene pyrimidine and the pyrethrin are mixed, the synergistic effect is obvious, the control effect on wheat aphid is obviously better than that of a single dose, and the dosage of the effective components is obviously reduced.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The synergistic pesticide composition containing the trifluorobenzene pyrimidine is characterized by comprising an effective active ingredient A and an active ingredient B; wherein the active component A is trifluorobenzene pyrimidine, and the active component B is plant-derived pesticide matrine; wherein the weight ratio of the trifluoro-benzene pyrimidine to the matrine is 10: 1-1: 2;
the mass percentage of the active component A and the active component B in the pesticide composition accounts for 1-95% of the total amount.
2. The synergistic insecticidal composition containing trifluorobenzene pyrimidine according to claim 1, characterized in that the mass percentage of the active ingredient A and the active ingredient B in the insecticidal composition accounts for 1-20% of the total amount.
3. The synergistic insecticide composition containing trifluoropyrimidine according to claim 1, wherein the insecticide composition is formulated as an emulsifiable concentrate, a suspension concentrate, a microemulsion, a suspoemulsion, an aqueous emulsion, a dispersible oil suspension, a wettable powder, a water dispersible granule, a suspended seed coating.
4. Use of the synergistic insecticidal composition containing trifluoropyrimidine according to any one of claims 1 to 3 for controlling sucking pests in field crops, vegetables and fruit trees.
5. The use according to claim 4, wherein the piercing-sucking mouthpart pest is a wheat aphid, a cotton aphid, a corn aphid, a bean aphid, a potato aphid, an apple aphid, a tomato whitefly, a laodelphax striatellus, a brown planthopper or a green-eared cicada.
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