CN113812407B - Insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and tebuconazole and application thereof - Google Patents

Insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and tebuconazole and application thereof Download PDF

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CN113812407B
CN113812407B CN202111182193.3A CN202111182193A CN113812407B CN 113812407 B CN113812407 B CN 113812407B CN 202111182193 A CN202111182193 A CN 202111182193A CN 113812407 B CN113812407 B CN 113812407B
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tebuconazole
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CN113812407A (en
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谷少华
王欢欢
赵瑞
张雷
史雪岩
梁沛
高希武
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China Agricultural University
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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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • 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
    • A01N43/713—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with four or more nitrogen atoms as the only ring hetero atoms
    • 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
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Abstract

The invention relates to the technical field of pesticide insecticides, in particular to an insecticidal composition containing chlorfenapyr fluorobenzene bisamide and tebuconazole and application thereof, wherein the weight ratio of the chlorfenapyr fluorobenzene bisamide to the tebuconazole is 1:2 and 1: 5. The compound composition 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 using amount of medicaments, reduce the cost and reduce the harm to the environment. And the pesticide composition has good quick-acting property and long lasting period, can effectively delay the generation of pesticide resistance of pests, and is particularly suitable for controlling resistant pests.

Description

Insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and tebuconazole and application thereof
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to an insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and tebuconazole and application thereof.
Background
Brofenamide (broflanilide), molecular formula: c25H14F11BrN2O2. The bromofenoxanil is a meta-diamide pesticide jointly developed by Mitsui chemical company of Japan and Pasteur company of Germany, and is approved to be registered in China in 2020. The pesticide is gamma-aminobutyric acid (GABA) gated chloride channel allosteric modulator, causing insect hyperexcitability and convulsion. 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.
Tetrazoxamide is a second generation Group28 bisamide insecticide developed by Bayer corporation in 2014, which was approved for registration in China in 2020. The insecticide belongs to diamide insecticides of o-aminobenzamide insecticides, takes effect by activating ryanodine receptors in calcium release channels, is an o-aminobenzamide insecticide which takes effect by ingestion, leads muscles to lose control and paralysis by interfering the calcium release channels of insect ryanodine receptors, and leads the muscles to stop eating quickly and finally die.
The tebuconazole amide can effectively prevent and control the pests such as chilo suppressalis, beet armyworm, thrips and the like on rice, fruit trees, vegetables and other crops at low dosage with remarkable effect. The pesticide mainly acts on lepidoptera pest larvae through stomach toxicity, has a contact killing effect, and mainly acts on adults through the contact killing effect. The agent has simple application method, and can be used for treating leaf surface, soil and seed.
The problem of resistance of pesticidal pests is a global problem. In recent years, due to the influence of factors such as long-term use of chemical agents and unscientific application of drugs, the problem of resistance of agricultural pests is increasingly serious, and for pests generating resistance in agriculture, the most effective method is to develop a new variety which has no cross resistance with the existing pesticide, but the development of the new pesticide has the problems of high cost, long time, great difficulty and the like.
The pesticide compounding can expand the insecticidal spectrum and delay the drug resistance of pests, and if different components with synergistic effect are reasonably compounded, the purpose of effectively preventing and controlling crop pests can be achieved. 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, wherein the active ingredients of the insecticidal composition comprise flubendiamide and tebuconazole, and the ratio of the flubendiamide to the tebuconazole is 1:2 or 1:5 by weight. The invention discovers that the flubendiamide and the tebuconazole have no cross resistance.
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 mass percentage of the sum of the weight of the flubendiamide and the tebuconazole amide in the total weight of the pesticide preparation is 5-70%.
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/tebuconazole suspending agent, and comprises, by mass, 4-5 parts of chlorfenapyr/tebuconazole, 10-20 parts of tebuconazole, 4-6 parts of alkylphenol polyoxyethylene formaldehyde condensate sulfate, 3-5 parts of nekal, 0.2-0.5 part of silicone oil, 0.3-0.7 part of xanthan gum, 0.4-0.9 part of polyethylene glycol and 61.9-78.1 parts of deionized water.
In a third aspect, the invention provides a preparation method of the pesticide preparation, which is characterized in that a dispersing agent, a wetting agent, a defoaming agent, a thickening agent and an antifreezing agent are sequentially added into a reaction kettle according to a formula, are ground at a high speed and are uniformly mixed, then raw pesticide of the brofenbendiamide and the tebuconazole are added, and are ground in a ball mill for 2-4 hours, so that the particle size of particles is below 5 microns, and 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, etc. used in the examples of this 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 brotrochar bendiamide and tebuconazole amide used are all conventional commercial raw drugs, and the brotrochar bendiamide manufacturer is mitsui chemical AGRO corporation of mitsui japan, registration number: PD 20200656; the tetrazolium amide manufacturer is Bayer thigh corporation, registration number: PD 20200655. The proportions or percentages in the embodiments of the present invention are mass ratios. Example 1 Combined virulence of Spodoptera frugiperda in different proportions of Bifenpyrad and Tefenpyrad
This example provides a combined virulence test for flubendiamide and tebuconazole amide. In the embodiment, a leaf soaking method is adopted, spodoptera frugiperda is taken as a test object, and the specific method is as follows:
reference to NY/T1154.14-2008 indoor bioassay criteria insecticides part 14: bioassay was carried out by the leaf dipping method.
The method comprises the following 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 12-hole culture plate, 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) and control mortality rates of less than 10% were valid determinations and were 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 adopting 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 assay results are shown in table 1:
TABLE 1 indoor toxicity assay results for Spodoptera frugiperda larvae with Bromodifenoxan and Tebuconazole
Figure BDA0003297750450000051
As shown in table 1, the weight ratio of the flubendiamide to the tebuconazole in the insecticidal composition is 1:2 and 1: and when the composition is 5, the cotoxicity coefficient is more 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 the embodiment, the pesticide preparation comprises (1) 5% of brotrochan diflufenican suspending agent, (2)200g/L of tebuconazole suspending agent, (3) 15% of brotrochan diflufenican/tebuconazole suspending agent, and (4) 24% of brotrochan diflufenican/tebuconazole suspending agent.
The formula of the 15% brofenpyrad/tebuconazole suspending agent is as follows: based on the total weight of the suspending agent, the suspending agent comprises: 5% of brotroche difluoride, 10% of tebuconazole, 4% of alkylphenol polyoxyethylene formaldehyde condensate sulfate, 3% of nekal, 0.2% of silicone oil, 0.3% of xanthan gum, 0.4% of polyethylene glycol and the balance of deionized water to prepare the 15% of brotroche difluoride/tebuconazole suspension.
The formula of the 24% brofenpyrad/tebuconazole suspending agent is as follows: based on the total weight of the suspending agent, the suspending agent comprises: 4% of brofenbendiamide, 20% of tebuconazole/20% of alkylphenol polyoxyethylene formaldehyde condensate sulfate, 5% of nekal, 0.5% of silicone oil, 0.7% of xanthan gum, 0.9% of polyethylene glycol and the balance of deionized water to prepare the 24% brofenbendiamide/tebuconazole suspension.
The preparation method of the 15% of the chlorfenapyr fluorobenzene diamide/tebuconazole amide suspending agent and the 24% of the chlorfenapyr fluorobenzene diamide/tebuconazole amide suspending agent comprises the following steps of: 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 flubendiamide and the tebuconazole are added, and the mixture is ground in a ball mill for 2-4h to ensure that the particle size of particles is below 5 mu m, so that the suspending agent can be prepared.
In this example, the test subjects were: spodoptera frugiperda. The test method for determining the control effect comprises the following steps:
(1) when the pesticide is applied, the spodoptera frugiperda is moderate in damage, the population density is moderate, and the population is mostly low in age, 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 sprayer, wherein each medicament treatment is carried out according to 667m2The water consumption of 50kg was evenly sprayed to each cell and no other agents were used during the test. The population number is investigated at 1, 3, 7 and 14 days after the application of the pesticide respectively, and the population decline rate and the correction control effect are calculated. 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 of Spodoptera frugiperda with the built pesticide preparation
Figure BDA0003297750450000071
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 dosage of flubendiamide and tebuconazole amide, and the quick-acting property and the lasting property are excellent. Although the flubendiamide and the tebuconazole amide are bisamide medicaments, the two have different action mechanisms, and the mixed use can improve the control effect, reduce the dosage and delay the generation of pest resistance.
Example 3 determination of field control Effect of Compound pesticide preparation on Cauliflower Plutella xylostella
The pesticide formulation used in this example was the same as in example 2. In this example, the subject was a plutella xylostella. The test method for determining the control effect comprises the following steps: the row spacing of the broccoli cultivated plants is 40cm multiplied by 60cm, and the broccoli diamondback moth is applied in the first full period of the young larvae (1-2 instars) during the test period.
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. Before spraying, the population base number is investigated, a five-point sampling method is adopted, 3 adjacent broccoli are investigated at each sampling point, and fixed-point plant-fixing investigation is implemented. 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 is investigated at 1, 3, 7 and 14 days after the application of the pesticide respectively, and the population decline rate and the correction control effect are calculated. 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 field control effect of compound pesticide preparation on broccoli diamondback moth
Figure BDA0003297750450000081
Figure BDA0003297750450000091
As can be seen from the table 3, the field control effect of each preparation on the plutella xylostella increases gradually with the increase of the dosage, and under the same experimental dosage, the control effect of the mixed preparation on the plutella xylostella is obviously better than that of the single dose of the bromofenoxanil and the tebuconazole, and the quick action and the lasting effect are excellent. The flubendiamide and the tebuconazole amide have different action mechanisms, so that the control effect can be improved, the dosage can be reduced, and the generation of pest resistance can be delayed by mixing the flubendiamide and the tebuconazole amide.
Example 4 controlling Effect of the Compound pesticide preparation on other pests
The pesticide formulation used in this example was the same as in example 2. The experimental object in 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 field prevention and control of cabbage Phyllotreta striolata by the compounded pesticide preparation
Figure BDA0003297750450000092
Figure BDA0003297750450000101
From the table 4, the field control effect of each preparation on the 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 dose of the bromofenoxanil and the tebuconazole, and the quick action and the lasting effect are better. The flubendiamide and the tebuconazole amide have different action mechanisms, so that the control effect can be improved, the dosage can be reduced, and the generation of pest resistance can be delayed by mixing the flubendiamide and the tebuconazole amide.
In conclusion, the pesticide composition obtained by compounding the two active ingredients of the brotrochan fluorobenzene bisamide and the tebuconazole with effective dose has obvious synergistic effect, and compared with a single agent, the pesticide composition has the advantages that the control effect on lepidoptera pests, particularly the control effect on spodoptera frugiperda and plutella xylostella is obviously improved, and the control effect on other pests such as flea beetles is also good. 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 active ingredients of the insecticidal composition comprise flubendiamide and tebuconazole, and the ratio of the flubendiamide to the tebuconazole is 1:2 or 1:5 in terms of weight ratio.
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 flubendiamide and the tebuconazole accounts for 5-70% 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 of claim 6, which is characterized by comprising, by weight, 4-5 parts of the brofenpyrad/tebuconazole amide suspending agent, 10-20 parts of the tebuconazole amide, 4-6 parts of alkylphenol polyoxyethylene formaldehyde condensate sulfate, 3-5 parts of nekal, 0.2-0.5 part of silicone oil, 0.3-0.7 part of xanthan gum, 0.4-0.9 part of polyethylene glycol and 61.9-78.1 parts of deionized 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 grade of the brobenbenbenbendiamide and the tebuconazole, 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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CN110999912A (en) * 2019-12-24 2020-04-14 安徽辉隆集团银山药业有限责任公司 Insecticidal composition containing bromofenoxaprop-p-fluorobenzene bisamide and chlorantraniliprole

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