CN113951272B - Insecticidal composition containing bromofenoxaprop-benzene bisamide and metaflumizone and application thereof - Google Patents
Insecticidal composition containing bromofenoxaprop-benzene bisamide and metaflumizone and application thereof Download PDFInfo
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- CN113951272B CN113951272B CN202111182219.4A CN202111182219A CN113951272B CN 113951272 B CN113951272 B CN 113951272B CN 202111182219 A CN202111182219 A CN 202111182219A CN 113951272 B CN113951272 B CN 113951272B
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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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/34—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the groups, e.g. biuret; Thio analogues thereof; Urea-aldehyde condensation products
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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
- 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
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- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to the technical field of pesticide insecticides, and particularly relates to an insecticidal composition containing bromofenoxanil and metaflumizone and application thereof. The insecticidal composition provided by the invention has obvious synergistic effect on lepidoptera pests and phyllotreta striolata on corns and vegetables, particularly on control of spodoptera frugiperda and plutella xylostella, can reduce the use amount of medicaments, reduce the cost and reduce the harm to the environment. The pesticide prepared from the insecticidal composition provided by the invention has good quick-acting property and long lasting period, effectively delays the generation of drug resistance of pests, and is particularly suitable for treating resistant pests.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to an insecticidal composition containing bromofenoxynil fluorobenzene bisamide and metaflumizone. The insecticidal composition provided by the invention is used for preventing and controlling crop pests.
Background
Brofenamide (broflanilide), molecular formula: c25H14F11BrN2O2. Bromocha fluorobenzene bisamide is a diamide insecticide developed by Mitsui chemical company of Japan and Pasteur company of Germany, is an allosteric modulator of a gamma-aminobutyric acid (GABA) gated chloride channel, and causes hyperexcitability and convulsion of insects. The insecticidal composition has high larvicidal activity on lepidoptera pests such as spodoptera litura and the like; the composition has good control effect on thrips; can effectively control pests which generate resistance to other pesticides. The bromoantraniliprole can also be used for seed treatment and control of grain wireworms and the like, and can be used in the field of special pest control, such as control of termites, ants, cockroaches, flies and the like.
Metaflumizone (metaflumizone), molecular formula: c24H16F6N4O2. Metaflumizone is a semicarbazone pesticide jointly developed by Pasteur, Germany and Nihon Nohyaku, Japan, and belongs to neuron sodium ionsA channel blocker. The pesticide mainly kills pests by taking food from the pests and entering the body to generate stomach toxicity, has small contact killing effect and no systemic effect. Metaflumizone can also be used for controlling ants, termites, flies and other pests. However, there is a need to further increase the pesticidal spectrum of these insecticides to improve pest control efficiency.
In recent years, due to the long-term use and unscientific application of chemical agents, the pesticide resistance of agricultural pests and environmental problems become more serious, particularly, the pests with overlapping generations such as lepidoptera and the like are easy to generate resistance, and a new treatment strategy is required to be searched for to solve the problems.
The pesticide compounding can expand the insecticidal spectrum and delay the drug resistance of pests, and is one of the methods for solving the problem of the resistance of the pests. Therefore, research and development of the high-efficiency low-toxicity environment-friendly pesticide composition has a positive effect on sustainable development of agriculture.
Disclosure of Invention
The invention aims to provide an agricultural compound insecticide, which contains an insecticidal composition with obvious synergistic effect, has the advantages of small dosage, low cost and good pesticide effect, can delay the drug resistance of pests, and is environment-friendly.
In a first aspect, the invention provides an insecticidal composition, active ingredients of the insecticidal composition comprise brofenpyrad and metaflumizone, and the weight ratio of the brofenpyrad to the metaflumizone is 1: 1.
according to the understanding of the person skilled in the art, the use of the abovementioned pesticidal compositions for controlling lepidopteran pests is claimed; and the application of the insecticidal composition in preparing pesticides.
In a second aspect, the present invention provides a pesticidal formulation comprising the above-described pesticidal composition.
In the pesticide preparation provided by the invention, the sum of the weight of the flubendiamide and the metaflumizone accounts for 1-90% of the total weight of the pesticide preparation.
The pesticide preparation provided by the invention also comprises a carrier and an auxiliary agent, wherein the auxiliary agent comprises one or more of a dispersing agent, an emulsifying agent, a disintegrating agent, a stabilizing agent, a wetting agent, a synergist, a penetrating agent, a defoaming agent, a thickening agent, a preservative, a solvent or a filler;
the carrier is one or more of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch or light calcium carbonate;
the pesticide preparation is microemulsion, aqueous emulsion, wettable powder, water dispersible granules, missible oil or suspending agent.
The pesticide preparation provided by the invention is a chlorfenapyr/metaflumizone suspending agent, and comprises, by weight, 13-15 parts of chlorfenapyr/metaflumizone suspending agent, 13-15 parts of metaflumizone, 2-2.5 parts of sodium dodecyl sulfate, 3-4 parts of carboxylate polymer, 4-5 parts of ethylene glycol, 0.2-0.3 part of organosilicon, 0.2-0.3 part of xanthan gum and 57.9-64.5 parts of pure water.
According to the formula, the dispersing agent, the wetting agent, the defoaming agent, the thickening agent and the antifreezing agent are sequentially added into a reaction kettle and ground at a high speed, the mixture is uniformly mixed, then the technical materials of the browing fluorobenzene diamide and the metaflumizone are added and ground in a ball mill for 2-4 hours, and the particle size of particles is enabled to be below 5 mu m, so that the suspending agent can be prepared.
Another object of the present invention is the use of the above-mentioned pesticidal composition or pesticidal formulation for controlling agricultural pests. Preferably used for preventing and killing lepidoptera pests and phyllotreta striolata on corns and vegetables, in particular to control spodoptera frugiperda and plutella xylostella.
Therefore, the invention also claims the application of the insecticidal composition or the pesticide preparation in preventing and controlling lepidoptera pests and phyllotreta striolata.
In a fourth aspect, the present invention provides a method of controlling lepidopteran pests, the method comprising applying to the plant, at the time of the occurrence of the pest, a pesticide formulation as described above.
The insecticidal composition has the beneficial effects that:
(1) the combination of the two active ingredients in the insecticidal composition provided by the invention has obvious synergistic effect, and the synergistic effect is obvious instead of simple superposition of the activities of the ingredients, so that the control effect is improved, the using amount of the active ingredients is reduced, and the insecticidal composition has good control effect on Spodoptera frugiperda and plutella xylostella;
(2) the pesticide preparation provided by the invention compounds with different action mechanisms, is matched with specific auxiliary agents and carriers, and adopts a specific preparation method, so that the generation of drug resistance of pests can be effectively delayed, the service life of the pesticide preparation is prolonged, and the pesticide preparation has important significance for comprehensive control of the pests;
(3) the pesticide preparation provided by the invention reduces the dosage, thereby reducing the cost, lightening the pollution to the environment, having good safety and meeting the safety requirement of the pesticide preparation.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It is intended that all modifications or alterations to the methods, procedures or conditions of the present invention be made without departing from the spirit and substance of the invention.
Unless otherwise specified, the experimental materials, reagents, instruments and the like used in the examples of the present invention are commercially available; unless otherwise specified, all technical means in the examples of the present invention are conventional means well known to those skilled in the art.
In the examples of the present invention, the bromofenoxaprop-fluorobenzene bisamide and metaflumizone are both conventional commercially available raw chemicals, and the manufacturer of the bromofenoxaprop-fluorobenzene bisamide is mitsui chemical AGRO corporation of japan, and the registration number is: PD 20200656; metaflumizone manufacturers are basf european corporation, registration number: PD 20101190. The proportions or percentages in the embodiments of the present invention are mass ratios. Example 1 Combined virulence of Bromocha-Fluorobendiamide and metaflumizone against Spodoptera frugiperda in different ratios
This example provides an indoor virulence assay for spodoptera litura larvae with bromoxynil bisamide and metaflumizone. The challenge test of the embodiment adopts a leaf soaking method, takes spodoptera frugiperda as a test object, and comprises the following specific steps:
referring to agricultural industry Standard "NY/T1154.14-2008 indoor bioassay Standard for pesticides test criteria insecticides part 14: bioassay was carried out by the leaf dipping method.
The method comprises the following specific steps: preparing a raw pesticide into mother liquor by using acetone, diluting the mother liquor into 5-7 series concentrations by using 0.1% Triton X-100 aqueous solution according to an equal ratio, and shearing non-transgenic fresh corn leaves in a horn mouth stage into leaf sections of 1cm multiplied by 1cm (length multiplied by width). Soaking the leaf segments in medicinal liquids with different concentrations for 20s, drying in the shade on filter paper, and placing in a culture plate with 12 holes, wherein 1mL of 1.5% agar is poured into each hole of the culture plate in advance for moisturizing. 6 leaf segments per hole, and 1 head of Spodoptera frugiperda larva with 3 ages is inoculated. Each treatment was repeated 3 times, each repetition being no less than 12 larvae. Control was made with 0.1% aqueous Triton X-100. The results were checked for 72 h. If the larva did not respond to light touch with a writing brush, the larva was considered dead.
Data were statistically analyzed using POLO Software (LeOra Software Inc., California, USA) with control mortality rates less than 10% as valid determinations and corrected for control mortality rates. And (4) obtaining a virulence regression line Slope value, a standard SE error value, an LC50 value, a P value and the like.
The co-toxicity coefficient (CTC value) of the mixture is calculated by the Sun Yunpei method.
The percentage content of the medicament A in the mixture is equal to the content of the medicament A/(the content of the medicament A + the content of the medicament B). times.100 percent.
The actual virulence index (ATI) ═ a agent LC 50/a agent LC50 × 100.
The percent of the combination of theoretical virulence index (TFI) ═ ati (a) x agent a + ati (B) x agent B.
Co-toxicity coefficient (CTC) is the actual ATI/theoretical TFI x 100 virulence index of the mixture.
The co-toxicity coefficient is more than or equal to 120, which shows that the composition has a synergistic effect; the co-toxicity coefficient is less than or equal to 80, which indicates that the drug is antagonistic; the co-toxicity coefficient is shown to be additive at 80-120.
Virulence determination results are shown in table 1.
TABLE 1 indoor toxicity assay results for Spodoptera frugiperda larvae with Bromodicidia fluorobenzenediamide and metaflumizone
The results in table 1 show that when the weight ratio of the bromoxynil fluorobenzene diamide to the metaflumizone in the insecticidal composition is 1: 1, the cotoxicity coefficient is greater than 120, and an obvious synergistic effect is shown, so that the composition has excellent insecticidal activity on spodoptera frugiperda.
Example 2 determination of field control Effect of the Compound pesticide preparation on Spodoptera frugiperda
In this example, the test agents used were (1) 5% brotrochar fluorobenzenediamide SC, (2) 22% metaflumizone SC, and (3) 30% brotrochar fluorobenzenediamide/metaflumizone SC (1: 1).
The formula of the 30% suspending agent of the brotrochan fluorobenzene diamide and the metaflumizone comprises the following components by taking the total weight of the suspending agent as a reference: 15% of bromoantraniliprole, 15% of metaflumizone, 2.5% of sodium dodecyl sulfate, 4% of carboxylate polymer, 5% of ethylene glycol, 0.3% of organic silicon, 0.3% of xanthan gum and pure water which are complemented to 100%.
The method for preparing the 30% suspending agent of the brotrochan fluorobenzene diamide and the metaflumizone comprises the following steps: according to the formula, the dispersing agent, the wetting agent, the defoaming agent, the thickening agent and the antifreezing agent are sequentially added into a reaction kettle for high-speed grinding and uniform mixing, then the technical materials of the brofenpyrad fluorobenzene bisamide and the metaflumizone are added, and the mixture is ground in a ball mill for 2-4h to ensure that the particle size of all particles is below 5 mu m, so that the suspending agent can be prepared.
In this example, the experimental subjects were: spodoptera frugiperda. The method for measuring the control effect comprises the following steps:
(1) when the pesticide is applied, the spodoptera frugiperda is moderate and harmful, the population density is moderate, and the age of the spodoptera frugiperda is mostly low, so that the pesticide effect test requirements in the field can be met.
(2) The test adopts random block arrangement, and protective rows are arranged around the block arrangement. Each treatment was repeated 4 times, and a clear water control was set at 60m per cell2. Before spraying, the population base number is investigated, a five-point sampling method is adopted, 10 corns are continuously investigated at each point, 50 corns are investigated in each cell, and the corn is marked by listing. Uniformly spraying with 3WBD-20 type knapsack electric sprayerThe agent treatment is carried out per 667m2The water consumption of 50kg was evenly sprayed to each cell and no other agents were used during the test. The population number was investigated at 1, 3, 7 and 14 days after application, and the population decline rate and the controlling effect were calculated, and the results are shown in Table 2.
The reduction rate (%) of population (population basis before treatment-number of surviving population after treatment)/population basis before treatment × 100;
control effect (%) (treatment area population reduction rate-control area population reduction rate)/(100-control area population reduction rate) × 100.
Table 2 field control effect determination results of compounded pesticide preparation on Spodoptera frugiperda
As can be seen from the table 2, the field control effect of each preparation on Spodoptera frugiperda is increased along with the increase of the dosage, and under the same test dosage, the control effect of the mixed preparation on Spodoptera frugiperda is obviously better than that of single preparation of flubendiamide and metaflumizone, and the quick-acting property and the lasting property are excellent. The brotroche fluorobenzene diamide and the metaflumizone have different action mechanisms, so that the prevention and treatment effect can be improved, the dosage can be reduced, and the generation of pest resistance can be delayed by mixing.
Example 3 determination of field control Effect of Compound pesticide preparation on Cauliflower Plutella xylostella
The same compounded pesticide formulation as in example 2 was used in this example. The prevention effect determination method in the embodiment comprises the following steps: the row spacing of the broccoli cultivated plants is 40cm multiplied by 60cm, and the pesticide is applied to the broccoli diamondback moth in the first full period of the young larvae (1-2 instars).
The test adopts random block arrangement, and protective rows are arranged around the block arrangement. Each treatment was repeated 4 times, and a clear water control was set at 30m per cell2. Investigating insect population base number before spraying, adopting five-point sampling method, investigating 3 adjacent broccoli at each sampling point, implementing fixed-point identificationAnd (5) investigating strains. Uniformly spraying with 3WBD-20 type knapsack electric sprayer, wherein each medicament treatment is carried out according to 667m2The water consumption of 30kg was evenly sprayed to each cell and no other agents were used during the test. The population number was investigated at 1, 3, 7 and 14 days after application, and the population decline rate and the controlling effect were calculated, and the results are shown in Table 3.
The reduction rate (%) of population (population basis before treatment-number of surviving population after treatment)/population basis before treatment × 100;
control effect (%) (treatment area population reduction rate-control area population reduction rate)/(100-control area population reduction rate) × 100.
Table 3 determination of field control effect of compound pesticide preparation on broccoli diamondback moth
From the table 3, the field control effect of each preparation on the plutella xylostella increases gradually along with the increase of the dosage, and under the same application dosage, the mixed preparation has obviously better control effect on the plutella xylostella than the single dose of the bromoantraniliprole and the metaflumizone, and has excellent quick action and persistence. The brotroche fluorobenzene diamide and the metaflumizone have different action mechanisms, so that the prevention and treatment effect can be improved, the dosage can be reduced, and the generation of pest resistance can be delayed by mixing.
Example 4 prevention and treatment effects of the Compound pesticide preparation on cabbage Phyllotreta striolata
The pesticide formulation used in this example was the same as in example 2. The experimental subject of the embodiment is cabbage phyllotreta striolata.
Vegetables are planted in the test field all the year round, and the phyllotreta striolata occurs seriously all the year round. The test method for determining the control effect is the same as that of the example 3, the control effect on the imagoes is mainly investigated, and the results are shown in a table 4.
Table 4 determination of field control effect of compound pesticide preparation on cabbage phyllotreta striolata
From the table 4, the field control effect of each preparation on cabbage phyllotreta striolata is increased along with the increase of the dosage, and under the same application dosage, the control effect of the mixed preparation on the cabbage phyllotreta striolata is obviously better than that of a single preparation of the brotrochan fluorobenzene diamide and the metaflumizone, and the quick action and the lasting effect are better. The brotroche fluorobenzene diamide and the metaflumizone have different action mechanisms, so that the prevention and treatment effect can be improved, the dosage can be reduced, and the generation of pest resistance can be delayed by mixing.
In conclusion, the pesticide composition obtained by compounding two active ingredients, namely the brotrochan fluorobenzene diamide and the metaflumizone, has a remarkable synergistic effect, and compared with a single agent, the pesticide composition not only can be used for preventing and treating lepidoptera pests, particularly the control effects on spodoptera frugiperda and plutella xylostella, but also has a good control effect on other pests such as flea beetles. The insecticidal composition has the advantages of small unit dosage, good quick action, long lasting period and the like, is safe to environment and crops, and has huge potential for popularization and use in agricultural production.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. The insecticidal composition is characterized in that the ratio of the brofenpyrad to the metaflumizone is 1: 1.
2. use of the pesticidal composition of claim 1 for controlling lepidopteran pests.
3. Use of the pesticidal composition according to claim 1 for the preparation of a pesticide.
4. A pesticidal formulation comprising the pesticidal composition of claim 1.
5. The pesticide preparation as claimed in claim 4, wherein the sum of the weight of the brofenbendiamide and the metaflumizone accounts for 1-90% of the total weight of the pesticide preparation.
6. The pesticide preparation as claimed in claim 5, further comprising an auxiliary agent and a carrier, wherein the auxiliary agent is one or more of a dispersing agent, an emulsifier, a disintegrating agent, a stabilizer, a wetting agent, a synergist, a penetrating agent, a defoaming agent, a thickening agent, a preservative, a solvent or a filler;
the carrier is one or more of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch or light calcium carbonate;
the pesticide preparation is microemulsion, aqueous emulsion, wettable powder, water dispersible granules, missible oil or suspending agent.
7. The pesticide preparation as claimed in claim 6, wherein the pesticide preparation is a chlorfenapyr/metaflumizone suspension, and the pesticide preparation comprises, by weight, 13-15 parts of chlorfenapyr/metaflumizone suspension, 13-15 parts of metaflumizone, 2-2.5 parts of sodium dodecyl sulfate, 3-4 parts of carboxylate polymer, 4-5 parts of ethylene glycol, 0.2-0.3 part of organosilicon, 0.2-0.3 part of xanthan gum and 57.9-64.5 parts of pure water.
8. The preparation method of the pesticide preparation as claimed in claim 6, characterized in that the suspending agent is prepared by adding the dispersant, the wetting agent, the defoamer, the thickener and the antifreeze into a reaction kettle according to the formula in sequence, grinding at high speed, mixing uniformly, then adding the technical products of the brobenflumizone and the metaflumizone, and grinding in a ball mill for 2-4h to ensure that the particle size of the particles is below 5 μm.
9. Use of the pesticidal composition of claim 1 or the pesticidal formulation of any one of claims 4 to 7 for controlling spodoptera frugiperda, plutella xylostella or phyllotreta striolata on vegetables.
10. A method for controlling lepidopteran pests, characterized in that a pesticide formulation according to any one of claims 4 to 7 is applied to a plant at the time of pest infestation.
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