CN109122692B - Insecticidal and acaricidal pesticide composition with synergistic effect - Google Patents
Insecticidal and acaricidal pesticide composition with synergistic effect Download PDFInfo
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- CN109122692B CN109122692B CN201811233197.8A CN201811233197A CN109122692B CN 109122692 B CN109122692 B CN 109122692B CN 201811233197 A CN201811233197 A CN 201811233197A CN 109122692 B CN109122692 B CN 109122692B
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
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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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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Abstract
The invention discloses an insecticidal and acaricidal pesticide composition with a synergistic effect and application thereof. The insecticidal and acaricidal composition comprises the effective components of the fluoropyrafuranone and the pyrazoxynil, wherein the weight ratio of the fluoropyrafuranone to the pyrazoxynil is 50: 1-1: 50, and preferably 20: 1-1: 20. After the two groups of active ingredients are compounded, the pesticide composition has obvious synergistic effect on various pests and mites such as two-spotted spider mite, bemisia tabaci, brown planthopper and the like on crops, and the control effect of the pesticide composition is obviously better than that of a single agent used alone. The composition has the advantages of expanding the insecticidal spectrum, prolonging the pest control time, delaying the development of resistance and the like, and has good application prospect.
Description
One, the technical field
The invention belongs to the technical field of chemical prevention and control of agricultural pests, and particularly relates to an insecticidal and acaricidal composition taking flupyradifurone and pyraflufen-ethyl as effective components, which is suitable for preventing and controlling agricultural pests such as two-spotted spider mites, bemisia tabaci, brown planthopper and the like.
Second, background Art
Fluopyrafuranone (flupyradifurone) is a novel butenolide pesticide developed by Bayer company, acts on the central nervous system of insects, and is an antagonist of an insect nicotinic acetylcholine receptor. The pesticide has the functions of systemic absorption, contact killing, stomach toxicity and penetration, can be used for preventing and treating piercing-sucking mouthpart pests, rasping-sucking mouthpart pests and dipteran larvae such as whitefly, psylla chinensis, scale insect, leafhopper, plant hopper, thrips, liriomyza sativae and the like on vegetables, fruit trees, rice, intertillage crops and ornamental plants, and reducing the transmission of virus and bacteria by an insect transmission medium, and is an environment-friendly pesticide with rapidness, high efficiency, lasting effect and low toxicity.
The pyrazotocin is a novel acaricide with independent intellectual property rights in China, and can inhibit the action of succinate dehydrogenase by being metabolized and converted into hydroxyl compounds in mites, so that the acaricide can act on a complex II in a respiratory electron transfer chain to destroy energy synthesis, and achieves the prevention and treatment effect. The pesticide has stomach poisoning and contact killing effects, has high activity on phytophagous mites such as Panonychus citri, Tetranychus ulmi, Tetranychus gossypii, and Tetranychus solani, and has good control effect on mites at various periods. The pyraclonil has a brand-new structure, has no cross resistance with the existing acaricide, and has good quick-acting property; and the fertilizer is safe to crops, environment-friendly, almost has no influence on beneficial organisms, and has no biological enrichment.
At present, chemical prevention and control are still the most common effective means for controlling plant diseases and insect pests, but a series of problems such as pesticide resistance of pests, pesticide residue, environmental pollution and the like are easily caused by long-term continuous high-dose application of a single chemical pesticide. However, the development rate of new agents is far from the rate of development of resistance by pests. Therefore, the reasonable compounding or mixing of the chemical insecticide has the positive characteristics of expanding the insecticidal spectrum, improving the control effect, prolonging the application suitable period, reducing the dosage, reducing the phytotoxicity, reducing the residue, delaying the occurrence and the development of the drug resistance and the drug resistance of pests and the like, and the compounding or mixing of the insecticide is one of the most effective methods for solving the problems.
Third, the invention
The invention aims to provide an insecticidal and acaricidal composition containing fluoropyrazole furanone and chlorfenapyr, which has obvious synergistic effect, high insecticidal and acaricidal activity, low toxicity and environmental protection. Can be used for preventing and controlling various pests such as tetranychus urticae koch, whitefly, plant hopper and the like in agriculture.
Fourthly, technical scheme
The technical scheme of the invention is realized by the following measures:
the insecticidal and acaricidal composition containing the fluoropyrafuranone and the ethiprole comprises the effective components of the fluoropyrafuranone and the ethiprole, wherein the weight ratio of the fluoropyrafuranone to the ethiprole is 1: 50-50: 1, the preferable ratio is 1: 20-20: 1, the total weight percentage of the fluoropyrafuranone and the tolfenpyrad in the composition is 0.5-90%, the preferable ratio is 10-70%, and the balance is auxiliary components which are allowed to be used and accepted in pesticides.
The auxiliary components are solvent, emulsifier, wetting agent, dispersant, stabilizer, antifreezing agent, thickener, binder, disintegrant, defoamer, penetrant, high molecular capsule wall material, synergist, preservative, filler and the like, are all commonly used or allowed to be used in pesticide preparations, are not particularly limited, and the specific components and the dosage are determined by simple experiments according to the formula requirements.
The insecticidal composition can be prepared into various application formulations suitable for agriculture, including but not limited to suspending agents, aqueous emulsion, microcapsule suspending agents, wettable powder, water dispersible granules, microemulsion and the like. The type of dosage form to be selected and processed in specific use may be determined practically depending on the subject of use, the environment of use, and the like.
Compared with the prior art, the invention has the advantages and beneficial effects that: 1. compared with single dosage, the composition has obvious synergistic effect and improves the control effect; 2. the composition can comprehensively prevent and control piercing-sucking pests and mites on crops, and has a wide prevention and control spectrum and a good prevention and control effect; 3. the composition consists of two active ingredients with different action mechanisms, and is favorable for overcoming and delaying the generation of drug resistance; 4. the compounding of the medicament reduces the dosage, thereby reducing the cost and lightening the pollution to the environment.
Fifth, detailed description of the invention
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described with the following embodiments, but the present invention is not limited thereto. The percentages in the examples are by weight.
Indoor bioassay compound screening test
The co-toxicity coefficient (CTC value) of the mixture was calculated according to the Sun Yunpei method. Evaluating the synergistic effect of the mixed pesticide according to the NY/T11547.7-2006 pesticide combined effect division standard: the co-toxicity coefficient (CTC) is more than or equal to 120 and shows a synergistic effect; the co-toxicity coefficient (CTC) is less than or equal to 80, and the antagonism is shown; 80 < co-toxicity coefficient (CTC) < 120 showed additive effects.
Measured virulence index (ATI) ═ standard agent L C50Test agent L C50)×100。
Theoretical virulence index (TTI) ═ percentage of a in the a agent virulence index × mix + percentage of B in the B agent virulence index × mix.
The cotoxicity coefficient (CTC) ═ × 100 [ measured virulence index (ATI)/theoretical virulence index (TTI) of the mixture ].
The calculation formula of the population reduction rate and the correction control effect is as follows:
example 1: indoor combined toxicity determination method of fluoropyrafuranone and pyrazoxynil on tetranychus urticae koch
Test subjects: tetranychus urticae
The test method comprises the following steps: the method is carried out by a glass slide dipping method. Attaching two adhesive tapes one centimeter wide to one end of the glass slide, selecting female nymphs with the same size, lightly attaching the backs of the nymphs to the adhesive tapes with a writing brush, adhering 30 heads to each sheet, standing for 3-4 hours, checking under a binocular dissecting mirror, and rejecting abnormal and dead individuals. And soaking one end of the glass slide, which is adhered with the test mites, into the liquid medicine for 5s, taking out the glass slide, and quickly sucking the redundant liquid medicine around the pest body by using a filter paper strip. Live mites were counted after 24h at 27. + -. 1 ℃ under microscopic examination (no responder was dead by touching their feet with a fine hair brush).
TABLE 1 indoor combined virulence determination of Fluopyranone and Metronidazole on Tetranychus urticae
| Name and proportion of drug (weight ratio) | LC50(mg/L) | ATI | TTI | CTC |
| Fluopyrafuranones | 3.24 | 100 | - | - |
| Chlorobipyr | 1.77 | 183.05 | - | - |
| Fluopyrafuranone Metronidazole (50: 1) | 2.29 | 141.48 | 101.63 | 139.22 |
| Fluopyrafuranone Metronidazole (20: 1) | 1.62 | 200.00 | 103.95 | 192.39 |
| Fluopyrafuranone Metronidazole (10: 1) | 1.45 | 223.45 | 107.55 | 207.76 |
| Fluopyrafuranone Metronidazole (5: 1) | 1.3 | 249.23 | 113.84 | 218.93 |
| Fluopyrafuranone Metronidazole (2: 1) | 1.16 | 279.31 | 127.68 | 218.75 |
| Fluopyrafuranone Metronidazole (1: 1) | 0.95 | 341.05 | 141.53 | 240.98 |
| Fluopyrafuranone Metronidazole (1: 2) | 0.91 | 356.04 | 155.37 | 229.16 |
| Fluopyrafuranone Metronidazole (1: 5) | 1.05 | 308.57 | 169.21 | 182.36 |
| Fluopyrafuranone Metronidazole (1: 10) | 1.14 | 284.21 | 175.50 | 161.94 |
| Fluopyrafuranone Metronidazole (1: 20) | 1.21 | 267.77 | 179.10 | 149.51 |
| Fluopyrafuranone Metronidazole (1: 50) | 1.29 | 251.16 | 181.42 | 138.44 |
As can be seen from the table 1, the co-toxicity coefficients of the compound composition of the fluoropyrazole furanone and the pyrazoxyfen-ethyl for controlling the tetranychus urticae are all more than 120 within the range of 50: 1-1: 50, and the synergistic effect is shown; especially, when the ratio of the two is 1: 10-10: 1, the co-toxicity coefficient for preventing and controlling two-spotted spider mites is over 160, and the synergistic effect is more obvious.
Example 2: indoor combined toxicity determination method of fluoropyrafuranone and pyrazoxyfen-ethyl on bemisia tabaci
Test subjects: bemisia tabaci
The test method comprises the steps of adopting a leaf soaking agar method, cutting a round bottom end of a 100m L round-bottom centrifugal tube to manufacture a raw test tube, paving 1% of agar 1.5m L in a centrifugal tube cover on one side of the raw test tube, soaking cotton leaves which are punched by a puncher in advance in liquid medicines with different concentrations or deionized water containing 0.05% of Triton X-100 (contrast) for 10s, airing the cotton leaves and lightly putting the cotton leaves on the agar, sealing the cotton leaves with a gauze after the cotton leaves are placed with 20-30 heads of adult Bemisia tabaci with the age of 2 days into each tube, placing the open end of the raw test tube downwards in an artificial climate chamber for standing for 1h, checking and removing injured and dead individuals falling off from the straight tube, checking the death condition of test insects after 48h processing, recording the total number of insects and the dead insects number, and calculating the insect reduction rate.
TABLE 2 indoor combined virulence determination of Fluopyranone and Metronidazole on Bemisia tabaci
As can be seen from the table 2, the co-toxicity coefficients of the compound composition of the fluoropyrazole furanone and the pyrazoxyfen-ethyl for controlling the bemisia tabaci are all more than 120 within the range of 50: 1-1: 50, and the synergistic effect is shown; especially, when the ratio of the two is 1: 10-10: 1, the co-toxicity coefficient for preventing and controlling two-spotted spider mites is over 160, and the synergistic effect is more obvious.
Example 3: indoor combined toxicity determination method of fluoropyrafuranone and pyraclostrobin on brown planthopper
Test subjects: nilaparvata lugens (Nilaparvata lugens) for brown plant hopper
The test method comprises the steps of adopting a rice stem dipping method, selecting robust and consistent tillering stage rice seedlings cultured in a laboratory, digging the rice seedlings with roots, cleaning the rice seedlings, cutting the rice seedlings into rice stems with roots of 10cm long, airing the rice stems in a shade until no water mark exists on the surfaces of the rice stems, dipping the rice stems in diluted medicaments for 30s respectively, taking out the rice stems, airing the rice stems, holding the roots of the soaked absorbent cotton in a glass tube, putting 3-year-old nymphs in the glass tube, taking 20 nymphs in each cup, taking soaked clear water as a blank control, repeating the concentration for 4 times, placing the treated rice stems in a light culture box with the temperature of 27 +/-1 ℃ and the light cycle of 16 h: 8h (L: D), and checking the death number after 4 days.
TABLE 3 indoor combined virulence determination of Fluopyranone and Metronidazole against Nilaparvata lugens
As can be seen from Table 3, the co-toxicity coefficients of the compound composition of the fluoropyrazole furanone and the pyrazoxyfen-ethyl for controlling the brown planthopper are all over 120 within the range of 50: 1-1: 50, and the synergistic effect is shown; especially, when the ratio of the two is 1: 10-10: 1, the co-toxicity coefficient for preventing and controlling two-spotted spider mites is over 160, and the synergistic effect is more obvious.
(II) formulation examples
Example 4: 20% Fluopyrafuranone Chlorpyrifos-Chlorpyrifos suspending agent
10% of fluoropyrafuranone, 10% of ethacrylonitrile, 4% of alkyl naphthalene formaldehyde condensate sodium sulfonate, 5% of calcium alkyl sulfonate, 4% of methyl cellulose, 5% of ethylene glycol, 1.5% of silicone oil and deionized water for complementing 100% to prepare the 20% of fluoropyrafuranone-ethacrylonitrile suspending agent.
(III) examples of the effects of the field
In order to better verify the actual application effect of the invention, the preparation of the invention in example 4 is adopted to carry out the field efficacy test of two-spotted spider mite, bemisia tabaci and brown planthopper.
Example 5: field efficacy test of 20% fluoropyrazole furanone and pyrazoxynil suspending agent for preventing and treating tetranychus urticae koch
The test method refers to the 'pesticide field efficacy test criterion (I) acaricide control of bean and vegetable spider mites GB/T17980.17-2000'. And (4) fixing 20 leaves in each cell, and counting the number of the alive mites and the mites. Each treatment was repeated 4 times, randomized block permutation.
Reagent to be tested: (1) 4000 times of 20% of fluropyrone and ethacrylonitrile suspending agent; (2) 2000 times of 20% fluropyrone and ethacrylonitrile suspending agent; (3) 20% of fluropyrone and ethacrylonitrile suspending agent 1000 times; (4) 1500 times of 17% fluropyranone solution; (5) 3000 times of 30% ethacrylonitrile suspending agent; (6) and (4) clear water.
The population was investigated and the control effect was calculated 3 days, 7 days and 14 days after the administration, and the test results are shown in table 4.
Table 420% Fluopyranone-Chlorpyrifos suspending agent for field efficacy test of controlling Tetranychus urticae
As can be seen from the table 4, the field test is carried out on the mixed agents with different proportions according to different dosages, the control effect of the mixed agents on the two-spotted spider mites of eggplants is better than that of the control agent, the acaricidal effect of the fluopyram and the chlorfenapyr is increased along with the increase of the dosages, and the control effect period is long. Has no adverse effect on eggplant in the test drug application range, and has application value.
Example 6: field efficacy test of 20% fluoropyrazole furanone and pyrazoxyfen-ethyl suspending agent for controlling bemisia tabaci
The test method refers to the industry standard NY/T1464.43-2012 of the people's republic of China: the pesticide can be used for preventing and treating vegetable Bemisia tabaci. Fixing 10 tomatoes in each cell, taking 3 leaves at the upper part, and counting the number of the living adults. Each treatment was repeated 4 times, randomized block permutation.
Reagent to be tested: (1) 20% of fluropyrone-ethacrylonitrile suspending agent 8000 times; (2) 4000 times of 20% of fluropyrone and ethacrylonitrile suspending agent; (3) 2000 times of 20% fluropyrone and ethacrylonitrile suspending agent; (4) 4000 times of 17% fluoropyrazole furanone solubles; (5) 2000 times of 30% ethacrylonitrile suspending agent; (6) and (4) clear water.
The population was investigated and the control effect was calculated 3 days, 7 days and 14 days after the administration, and the test results are shown in table 5.
Field efficacy test of table 520% Fluopyranone-Etoxazole mite nitrile suspending agent for controlling Bemisia tabaci
As can be seen from the table 5, the field test is carried out on the mixed medicaments with different proportions according to different dosages, the control effect of the mixed medicaments on the tomato bemisia tabaci is better than that of the control medicament, the insecticidal effect of the flupyradifurone and the ethacrylonitrile is increased along with the increase of the dosages, and the control effect period is long. The test drug application range has no adverse effect on the tomatoes.
Example 7: field efficacy test of 20% fluoropyrazole furanone and pyraclonil suspending agent for controlling brown planthopper
The test method refers to the pesticide GB/T17980.4-2000 for controlling the rice planthopper according to the pesticide field efficacy test rule I. The parallel hopping method investigates 10 points per cell, 2 clusters per point. Shaking or beating the rice clusters to count the number of the planthoppers floating on the water surface between the rice clusters. Each treatment was repeated 4 times, randomized block permutation.
Reagent to be tested: (1) 20% of fluropyrone-ethacrylonitrile suspending agent 8000 times; (2) 4000 times of 20% of fluropyrone and ethacrylonitrile suspending agent; (3) 2000 times of 20% fluropyrone and ethacrylonitrile suspending agent; (4) 4000 times of 17% fluoropyrazole furanone solubles; (5) 2000 times of 30% ethacrylonitrile suspending agent; (6) and (4) clear water.
The population was investigated and the control effect was calculated 3 days, 7 days and 14 days after the administration, and the test results are shown in table 6.
Field efficacy test of table 620% Fluopyranone-Etoxazole mite nitrile suspending agent for controlling Nilaparvata lugens
As can be seen from the table 6, the field efficacy test results show that the combination of the fluopicolide and the ethacrylonitrile can effectively prevent and treat the brown planthopper of the rice, the composition has obvious synergistic interaction, the prevention and treatment effects are better than those of a single agent, and the prevention and treatment period is long; has no adverse effect on rice in the application range of the test, and has application value.
Claims (2)
1. The insecticidal and acaricidal composition is characterized by comprising effective components of fluoropyrafuranone and ethiprole, wherein the weight ratio of the effective components of the fluoropyrafuranone to the ethiprole is 50: 1-1: 50.
2. An insecticidal and acaricidal composition according to claim 1, which is useful against Tetranychus urticae, Bemisia tabaci and Nilaparvata lugens.
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