CN115281193A - Insecticidal composition containing methoxyfenozide - Google Patents

Insecticidal composition containing methoxyfenozide Download PDF

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CN115281193A
CN115281193A CN202210600309.9A CN202210600309A CN115281193A CN 115281193 A CN115281193 A CN 115281193A CN 202210600309 A CN202210600309 A CN 202210600309A CN 115281193 A CN115281193 A CN 115281193A
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methoxyfenozide
deltamethrin
insecticidal composition
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agent
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张通
曹巧利
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Shaanxi Meibang Pharmaceutical Group Co ltd
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Shaanxi Meibang Pharmaceutical Group Co ltd
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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
    • A01N37/36—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 singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
    • A01N37/38—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 singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
    • A01N37/40—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 singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
    • 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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P7/00—Arthropodicides
    • A01P7/04—Insecticides

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Abstract

The invention relates to the technical field of pesticides, and discloses an insecticidal composition containing methoxyfenozide, in particular to application of the insecticidal composition containing methoxyfenozide and deltamethrin to pest control, wherein the insecticidal composition is the pest spodoptera exigua. The insecticidal composition is prepared from methoxyfenozide, deltamethrin, an auxiliary agent and other excipients, and is prepared into a suspending agent, wherein the weight ratio of methoxyfenozide to deltamethrin is 27 to 3. The insecticidal composition can improve the use efficiency of pesticides, improves the effect of preventing and controlling beet armyworms, has obvious synergistic effect, reduces the use amount of pesticides, reduces the pesticide cost of farmers, and is beneficial to environment, food safety and environmental protection.

Description

Insecticidal composition containing methoxyfenozide
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to an application of a methoxyfenozide-containing insecticidal composition in pest control.
Background
Methoxyfenozide is a 2 nd generation diacylhydrazine insect growth regulator, has high selective insecticidal activity on lepidoptera pests, has no osmosis action and phloem systemic activity, is mainly effective through stomach toxicity, and also has certain contact killing and ovicidal activity, is a 2 nd generation diacylhydrazine insect growth regulator, has high selective insecticidal activity on the lepidoptera pests, has no osmosis action and phloem systemic activity, is mainly effective through stomach toxicity, and also has certain contact killing and ovicidal activity. Like other diacylhydrazine insecticides such as chromafenozide, chlorfenozide and tebufenozide, methoxyfenozide is also an ecdysone agonist, and causes lepidoptera larvae to stop feeding, so that the ecdysis process is accelerated, and the pests die due to early ecdysis before maturity. The action mechanism of the pesticide is opposite to that of a pesticide for inhibiting molting of pests, and the pesticide can be used for preventing and treating the pests in the whole larval stage.
Deltamethrin is an organic compound with a molecular formula of C22H19Br2NO3 and is a white orthorhombic needle crystal. Almost insoluble in water at normal temperature and soluble in various organic solvents. Is stable to light and air. Is stable in acidic medium and unstable in alkaline medium. Deltamethrin is one of the pyrethroid insecticides with the highest toxicity to insects, has the effects of contact killing and stomach toxicity, quick contact killing, strong knockdown force, no fumigation and systemic effects and has the effect of repelling some pests at high concentration. The lasting period is long (7 to 12 days).
Spodoptera exigua (Beet armyworm) has the academic name Spodoptera exigua (Hubner, 1808) and also has the academic names of corn armyworm, corn earworm and corn caterpillar, and belongs to the family of Lepidoptera Noctuidae. Is a omnivorous pest, which is harmful to more than 170 plants such as corn, cotton, beet, sesame, peanut, tobacco, soybean, chinese cabbage, tomato, cowpea, scallion, etc. Taking larvae as harmful leaves, feeding egg shells of the larvae which are hatched first, then climbing out from villi, feeding mesophyll of the leaves which are normally clustered at 1-2 ages, and leaving epidermis in a window paper shape. The larvae of 3 years later disperse into harmful, and can eat bract, and the leaves can be eaten into notches or holes, and the large amount of feed is started after 4 years later, and when serious, the mesophyll can be eaten, and only leaves and petiole veins are remained. The larvae of over 3 years old can also bore fruit ears to damage and cause rotten ears.
Disclosure of Invention
The invention aims to provide an insecticidal composition containing methoxyfenozide.
The technical scheme of the invention is as follows:
an insecticidal composition containing methoxyfenozide, which is characterized in that: the composition consists of methoxyfenozide, deltamethrin, an auxiliary agent and other excipients, and is prepared into a suspending agent, wherein the weight ratio of the methoxyfenozide to the deltamethrin is (9-1).
Further, the content of effective active ingredients of the methoxyfenozide and the deltamethrin is 11% -44%, and the content of the preferable effective active ingredients is 22%.
Furthermore, the insecticidal composition can be used for various crops, such as cruciferous vegetables, corn, peanuts, soybeans, cotton and the like.
Furthermore, the auxiliary agent and the excipient are selected from one or more of dispersing agent, wetting agent, antifreezing agent, preservative, antifoaming agent, pH regulator, thickening agent and water.
The dispersing agent is selected from one or more of alkyl naphthalene formaldehyde condensate sulfonate, alkylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether sulfonate, phenethyl phenol polyoxyethylene ether phosphate, alkyl polyoxyethylene ether sulfonate, polyoxyethylene polyoxypropylene ether block copolymer, nekal, dodecyl polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate, naphthalene sulfonic acid formaldehyde condensate sodium salt block copolymer, comb-type polycarboxylate, sodium polycarboxylate and lignosulfonate; the wetting agent is selected from one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, phenethyl phenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, alkyl naphthalene sulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, triphenyl ethylphenol polyoxypropylene polyoxyethylene block polymer, lauryl sodium sulfate, styrylphenol formaldehyde resin propylene oxide block polyether, castor oil polyoxyethylene ether, fatty alcohol polyoxyethylene ether, alkyl glycoside and fatty alcohol polyoxyethylene ether sodium sulfonate; the antifreezing agent is selected from one or more of ethylene glycol, propylene glycol, glycerol, urea, polyethylene glycol and sorbitol; the preservative is sodium benzoate; the defoaming agent is a silicone defoaming agent, a C10-20 saturated fatty acid compound, a C8-10 fatty alcohol, hexanol, butanol and octanol; the pH regulator is selected from one or more of glacial acetic acid, citric acid and triethanolamine; the thickening agent is selected from one or more of xanthan gum, magnesium aluminum silicate, white carbon black, polyvinyl alcohol, carboxymethyl cellulose, carboxyethyl cellulose and methyl cellulose.
Further, the preparation method of the composition comprises the steps of firstly putting the auxiliary agent, the excipient, the active ingredient raw medicine and water into a stirring tank, shearing at high speed, and fully dispersing to form initial dispersion liquid; conveying the mixture to a sand mill through a diaphragm pump for crushing, adjusting the feeding speed of the sand mill, and confirming that the granularity meets the requirement; and finally, conveying the slurry into a preparation kettle, adding a thickening agent and a defoaming agent, adjusting the viscosity of the material, and sampling for quality detection to obtain a finished product.
Furthermore, the dosage of the effective components of the insecticidal composition is 16.5 to 49.5 g/ha.
When the composition is prepared into a suspending agent, the composition comprises the following components in percentage by weight: 5.5 to 39.6 percent of methoxyfenozide, 1.1 to 22 percent of deltamethrin, 1 to 10 percent of dispersant, 1 to 10 percent of wetting agent, 0.01 to 2 percent of defoamer, 0.2 to 2 percent of thickening agent, 0 to 10 percent of antifreeze, 0 to 1 percent of preservative, 0 to 2 percent of pH regulator and the balance of water.
The suspending agent has the main technical indexes that:
Figure BDA0003667340060000041
compared with the prior art, the composition of the invention has the following beneficial effects: (1) Compared with a single agent, the composition has obvious synergy on spinach and beet armyworm, and obviously improves the control effect; (2) The pesticide has low toxicity and high efficiency, reduces the dosage of the pesticide, reduces the residual quantity of the pesticide on crops, and has short safe interval period; (3) both fast and long acting.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the present invention.
Firstly, adding the auxiliary agent and the excipient, methoxyfenozide, deltamethrin and water into a stirring tank, shearing at a high speed, and forming a primary dispersion liquid after fully dispersing; conveying the mixture to a sand mill through a diaphragm pump for crushing, adjusting the feeding speed of the sand mill, and confirming that the granularity meets the requirement; and finally, conveying the slurry into a preparation kettle, adding a thickening agent and a defoaming agent, adjusting the viscosity of the material, and sampling for quality detection to obtain a finished product.
Application embodiment 1
EXAMPLE 1 22% Methoxyfenozide deltamethrin suspension
19.39% of 98% methoxyfenozide technical drug, 3.06% deltamethrin technical drug, 3% fatty alcohol-polyoxyethylene ether phosphate, 2% sodium polycarboxylate, 4% sodium dodecyl sulfate, 3% fatty alcohol-polyoxyethylene ether, 0.4% C8-10 fatty alcohol, 0.4% magnesium aluminum silicate, 2% glycerol, 0.3% citric acid, 1% sodium benzoate and 100% water, so as to prepare the 22% methoxyfenozide-deltamethrin suspending agent.
Example 2% Methoxyfenozide deltamethrin suspension
19.39% of 98% methoxyfenozide technical material, 3.06% deltamethrin technical material, 6% nonylphenol polyoxyethylene ether phosphate, 2% alkyl glycoside, 4% triphenylethylphenol polyoxypropylene polyoxyethylene block polymer, 0.5% silicone compound, 0.2% xanthan gum, 0.2% polyvinyl alcohol, 5% urea, 0.5% glacial acetic acid and water are added to 100% to prepare the 22% methoxyfenozide-deltamethrin suspending agent.
Example 3% Methoxyfenozide deltamethrin suspension
19.39% of 98% methoxyfenozide technical material, 3.06% deltamethrin technical material, 3% polyoxyethylene polyoxypropylene ether block copolymer, 2% dodecyl polyoxyethylene ether phosphate, 6% fatty alcohol polyoxyethylene ether sodium sulfonate, 0.7% C10-20 saturated fatty acid compound, 0.5% carboxymethyl cellulose, 4% urea and 100% water, and the 22% methoxyfenozide-deltamethrin suspension is prepared.
Example 4% Methoxyfenozide deltamethrin suspension
19.39% of 98% methoxyfenozide raw drug, 3.06% deltamethrin raw drug, 5% lignosulfonate, 4% alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, 1% fatty alcohol polyoxyethylene ether, 0.4% silicone defoamer, 4% propylene glycol, 1.5% white carbon black and water added to 100% to prepare 22% methoxyfenozide-deltamethrin suspending agent.
Example 5% Methoxyfenozide deltamethrin suspension
10.10% of 98% methoxyfenozide technical drug, 1.12% deltamethrin technical drug, 3% alkyl polyoxyethylene ether sulfonate, 4% alkylphenol formaldehyde resin polyoxyethylene ether, 0.5% hexanol, 1.5% methyl cellulose, 3% urea and 100% of water are added to prepare the 11% methoxyfenozide/deltamethrin suspending agent.
Example 6% Methoxyfenozide deltamethrin suspension
15.31 percent of 98 percent methoxyfenozide technical drug, 15.31 percent of 98 percent deltamethrin technical drug, 4 percent of naphthalenesulfonic acid formaldehyde condensate sodium salt block copolymer, 2 percent of fatty alcohol polyoxyethylene ether sodium sulfonate, 2 percent of phenethyl phenol polyoxyethylene ether phosphate, 0.2 percent of butanol, 0.2 percent of xanthan gum, 3 percent of polyethylene glycol, 0.2 percent of sodium benzoate and 100 percent of water, thus preparing the 30 percent methoxyfenozide-deltamethrin suspending agent.
Example 7% Methoxyfenozide deltamethrin suspension
38.78% of 98% methoxyfenozide technical material, 6.12% deltamethrin technical material, 4% comb-type polycarboxylate, 3% alkylphenol polyoxyethylene ether sulfonate, 2% fatty alcohol polyoxyethylene ether sodium sulfonate, 3% castor oil polyoxyethylene ether, 0.2% silicone defoamer, 4% sorbitol, 0.5% sodium benzoate and water added to 100% to prepare the 44% methoxyfenozide-deltamethrin suspending agent.
The second application example is implemented:
deltamethrin, methoxyfenozide and mixed indoor combined toxicity determination experiment for spinach and beet armyworm
Purpose of the test
The toxicity of methoxyfenozide and deltamethrin to spinach beet armyworm and different mixed combinations thereof is determined and evaluated, the suitability of the methoxyfenozide and deltamethrin is determined, and scientific basis is provided for the research and development of the mixed preparation of methoxyfenozide and deltamethrin.
2 design of the experiment
2.1 test agent methoxyfenozide (methoxyfenozide) 98% technical; deltamethrin (deltamethrin) 98% original drug.
2.2 pharmaceutical preparation
Weighing 0.0307g methoxyfenozide 98% original drug, dissolving with 2mL DMF, adding 0.6mL Tween80 emulsifier, stirring well, adding clear water to 300mL to prepare 100mg/L mother liquor, diluting 100mL mother liquor with water containing 0.1% Tween80 emulsifier to 50, 25, 12.5, 6.25 and 3.125mg/L according to 2 times proportion, and performing test at 6 concentrations.
Weighing 0.0204g of 98% deltamethrin, dissolving by 1mL of DMF, adding 0.4mL of Tween80 emulsifier, stirring uniformly, adding clear water to 200mL to prepare a mother solution of 100mg/L, adding 20mL of the mother solution into 80mL of water containing 0.1% Tween80 emulsifier to prepare a test solution of 20mg/L, and diluting by 2 times the amount of water containing 0.1% Tween80 emulsifier to 10, 5, 2.5, 1.25 and 0.625mg/L for 6 concentrations for testing.
According to the ratio of 27:3, 19:3, 11: 3, 1:1 and 3:19 of methoxyfenozide to deltamethrin, respectively measuring 36, 34.54, 31.43, 20 and 5.46mL of methoxyfenozide mother liquor, correspondingly measuring 4, 5.46, 8.57, 20 and 34.54mL of deltamethrin mother liquor, mixing the two, complementing water added with an emulsifier to 100mL, preparing test solutions of 40mg/L, and respectively diluting the test solutions to 6 concentrations by using water containing 0.1 Tween80 emulsifier according to the ratio of 2 times.
A blank was prepared by adding 98mL of water containing 0.1% Tween80 emulsifier to a beaker containing 2mL of DMF.
3 test method
Referring to NY/T1154.14-2008, the leaf dipping dish method is adopted. Beating the spinach leaves into leaf disks by using a puncher with the diameter of 1.8cm, soaking the leaf disks in test liquid medicine for 15 seconds, putting the leaf disks into a culture dish (with the diameter of 9 cm) filled with moisturizing filter paper, putting 8 leaf disks into each dish, naturally drying, selecting 3-year-old spinach beet armyworm larvae starved for 4 hours to the culture dish, putting each dish into the culture dish, repeating for 4 times, finishing the treatment, covering a dish cover, and placing the dish cover in an observation room for culture.
4 data investigation and statistical analysis
4.1 investigation time and method
And (4) after 72h, detecting the death condition of the test insects, and recording, wherein the death judgment standard of the test insects is that no reaction is caused when the test insects are lightly contacted with tweezers.
4.2 evaluation method of synergistic Effect
The co-toxicity coefficient (CTC) of each mixed combination is obtained by adopting a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw measurement standard method NY/T1154.7-2006. Namely, CTC is less than or equal to 80 as antagonistic action, 80-straw CTC-straw cover 120 as additive action, and CTC is more than or equal to 120 as synergistic action. The co-toxicity coefficient is calculated according to the formula
Figure BDA0003667340060000081
Theoretical virulence index of mixture (TTI) = virulence index of agent a × percent of agent a in mixture (%) + virulence index of agent B × percent of agent B in mixture (%)
Figure BDA0003667340060000091
5 results of the experiment
TABLE 1 toxicity test results of different proportions of deltamethrin and methoxyfenozide for spinach beet armyworm
Figure BDA0003667340060000092
As can be seen from Table 1, the indoor test result of the time shows that the synergistic effect is shown when the methoxyfenozide and the deltamethrin are mixed according to the proportion of 27:3, 19:3, 11: 3 and 1:1 on the spinach beet armyworm, the LC50 values are respectively 9.59, 7.97, 7.52 and 5.10mg/L, the cotoxicity coefficients are respectively 134.19, 147.92, 132.89 and 125.71, wherein the synergistic effect according to the proportion of 19:3 is most obvious, and the additive effect is shown when the proportion of the methoxyfenozide and the deltamethrin is 3:19.
Application example three: example 1 field efficacy test for controlling spinach beet armyworm
Purpose of the test
The 22% methoxyfenozide-deltamethrin suspending agent developed by the applicant is verified to have the control effect on spinach asparagus caterpillars and the safety on spinach, the field dosage and the application technology are determined, and a scientific basis is provided for pesticide registration.
2 basis of experiment
The agricultural industry standard of the people's republic of China, pesticide registration field efficacy test quality management Specification (NY/T2885-2016); experimental criteria for pesticide field efficacy (GB/T17980.13-2000).
3 site of experiment
The experiment arrangement is established in scientific research base in Guangxi agricultural science institute.
Selection of test subjects, crops and varieties
Test subjects: spodoptera exigua, spodoptera exigua; test crops: spinach.
5 test design and arrangement
5.1 dosage and numbering of drugs
TABLE 2 test design of test agents
Figure BDA0003667340060000101
5.2 application time and frequency
The test only applies the medicine once, and the application time is 6 months and 4 days in 2020.
5.3 Capacity of use
The water consumption is 50L/mu.
5.4 investigation time and number of surveys
The study was conducted 3 times on the 3 rd and 7 th days before and after the drug administration.
5.5 method of calculating drug efficacy
Figure BDA0003667340060000102
Figure BDA0003667340060000111
6 results of the experiment
TABLE 3 test results of field drug effect test for preventing spinach and beet armyworm in example 1
Figure BDA0003667340060000112
As can be seen from Table 3, 3 days after the application, the control effects of the 22% methoxyfenozide/deltamethrin SC active ingredient of the test medicament on the spinach beet armyworm are respectively 16.5, 33 and 49.5 g/ha as follows: 84.45%, 86.65% and 89.21%. The control effects of the control agent 240g/L methoxyfenozide SC72 g/hectare and the control agent 25g/L deltamethrin EC 15 g/hectare are respectively as follows: 84.13 percent and 82.97 percent. The test result is analyzed by DUNCAN new double-pole difference method, the control effect of 16.5 g/hectare of the active ingredient of the 22% methoxyfenozide/deltamethrin SC of the test medicament is equivalent to the control effect of 72 g/hectare of two contrast medicaments 240g/L methoxyfenozide SC and 15 g/L deltamethrin EC, and the difference is not obvious. The control effect of the test agent 22% methoxyfenozide/deltamethrin SC active ingredient 33 g/hectare is equivalent to the control effect of the contrast agent 240g/L methoxyfenozide SC72 g/hectare, and the difference is not obvious; the control effect is obviously higher than that of a control medicament 25g/L deltamethrin EC 15 g/hectare. The control effect of 49.5 g/hectare of the active ingredient of the test medicament 22% methoxyfenozide/deltamethrin SC is remarkably higher than the control effects of 240g/L methoxyfenozide SC72 g/hectare and 25g/L deltamethrin EC 15 g/hectare of two control medicaments.
7 days after the pesticide is applied, the control effects of the 22% methoxyfenozide-deltamethrin SC active ingredient of the test medicament on spinach beet armyworm at 16.5, 33 and 49.5 g/ha are respectively as follows: 86.72%, 89.70% and 92.24%. The control effects of the control agent 240g/L methoxyfenozide SC72 g/hectare and the control agent 25g/L deltamethrin EC 15 g/hectare are respectively as follows: 86.96 percent and 84.15 percent. The test results are tested and analyzed by a DUNCAN new double-pole difference method, the control effects of 16.5 g/hectare of the active ingredients of the 22% methoxyfenozide deltamethrin SC of the test medicament are equivalent to the control effects of 72 g/hectare of the two control medicaments 240g/L methoxyfenozide SC and 25g/L deltamethrin EC 15 g/hectare, and the difference is not obvious. The control effect of 49.5 g/hectare of the active ingredient of the test medicament 22% methoxyfenozide deltamethrin SC is obviously higher than that of the control medicament 240g/L methoxyfenozide SC72 g/hectare. The control effect is remarkably higher than 25g/L deltamethrin EC 15 g/hectare.
Application example four: example 2 field efficacy test for controlling spinach beet armyworm
The purpose of the test, the experimental basis, the design and dosage of the medicament and the calculation method of the drug effect are the same as the third application example.
1 site of experiment
The test is arranged in Meichun town of Wu-Hu-Bei province.
Selection of test subjects, crops and varieties
Test subjects: spodoptera exigua Hubner (Spodoptera exigua Hubner); and (3) test crops: spinach with good growth and variety of sharp wave.
3 time and frequency of application
The administration is 1 time for 10/8 days in 2020.
4 capacity of use
The water consumption for the test is as follows: 675 l/ha.
5 investigation time and number of surveys
The base of the pre-medication study (2020.10.8), and the effect study was performed 2 days (2020.10.10) and 7 days (2020.10.15) after the medication.
6 results of the experiment
TABLE 4 example 2 results of field efficacy test for control of spinach beet armyworm
Figure BDA0003667340060000131
Note that lower case letters indicate differences at the 0.05 level between treatments, and upper case letters indicate differences at the 0.01 level between treatments.
As can be seen from Table 4, the 22% methoxyfenozide/deltamethrin suspension of example 2 has good quick-acting performance on Spinaciae spodoptera exigua, and the population reduction rate of the Spinaciae spodoptera exigua is between 89.3% and 97.3% and the control effect is between 86.1% and 96.5% under the conditions that the 22% methoxyfenozide/deltamethrin suspension of the test object is treated by 5g/667m2, treated by 10g/667m2 and treated by 15g/667m2 after the application of the suspension. The control effect of the control substance 240g/L methoxyfenozide suspending agent of 20g/667m2 and the control effect of the control substance 25g/L bromethoxy pyrethrin emulsifiable concentrate of 40g/667m2 on spodoptera exigua of the beet are respectively 91.5 percent and 89.1 percent, which are both lower than the control effect of the test substance of 10g/667m2 on spodoptera exigua of the beet.
After 7 days of drug administration, the control effect of the test substance on the spodoptera exigua after the treatment of each dose is improved compared with that of the test substance after 2 days of drug administration, and is 95.8-100%, the control effect of the control substance 240g/L methoxyfenozide suspending agent is 95.8% of that of the control substance treated by 20g/667m2, and the control effect of the control substance treated by 25g/L bromxythrin emulsifiable concentrate is 40g/667m2, and is 95.8% and 92.9% respectively. Has no adverse effect on target crops in the application range of the test.
Application example five: example 3 field efficacy test for controlling spinach beet armyworm
The purpose of the test, the experimental basis, the design and dosage of the medicament and the calculation method of the drug effect are the same as the third application example.
1 site of experiment
The experiment is arranged in Yangling area of Shaanxi province.
Selection of test subjects, crops and varieties
Test subjects: beet armyworm: (Spodoptera exigua (Hubner)); and (3) test crops: huabo No. 1, grew well.
3 time and frequency of application
Test 1 application of the drug is carried out 6 months and 10 days at the emergence stage of the spinach beet armyworm larvae.
4 capacity of use
50 liters of pesticide spraying liquid is sprayed per mu, and 750 liters of pesticide spraying liquid is sprayed per hectare.
5 investigation time and number of surveys
The population base number is investigated before the application of the medicine, and the population number is investigated 1d, 3d and 7d after the application of the medicine.
6 results of the experiment
TABLE 5 EXAMPLE 3 field efficacy test results for spinach beet armyworm control
Figure BDA0003667340060000141
As can be seen from table 5, the control effects of five treatment doses of 16.5, 33, 49.5g (a.i.) and 49.5g (a.i.)/ha) of 22% methoxyfenozide/deltamethrin suspending agent of example 3 and 240g/l methoxyfenozide suspending agent of 72g (a.i.)/ha and 25g/l deltamethrin emulsifiable concentrate of 15g (a.i.)/ha at 1d after application are 83.57%, 86.44%, 88.51%, 60.74% and 86.03%, respectively; the control effects of the composition in 3d after application are respectively 86.46%, 90.57%, 92.78%, 90.66% and 92.28%; the control effect of 7 days after the application is 93.81%, 97.88%, 98.88%, 93.89% and 95.18%.
Analysis of variance showed that: after application, the control effects of five dosage treatments of 1d,22% methoxyfenozide/deltamethrin suspending agent 16.5, 33, 49.5g (a.i.) per ha and control medicament 240g/L methoxyfenozide suspending agent 72g (a.i.) per ha and 25g/L deltamethrin emulsifiable concentrate 15g (a.i.) per ha are obviously different on the 0.05 and 0.01 levels; the control effect of each treatment was significantly different at the 0.05 level 7d after the drug administration.
Application example six: example 4 field efficacy test for controlling spinach beet armyworm
The purpose of the test, the basis of the test, the design and dosage of the medicament and the calculation method of the medicament effect are the same as those in the third application example.
1 site of experiment
The test is arranged in Meichun town of Wu cave city, hubei province.
Selection of test subjects, crops and varieties
Test subjects: spodoptera exigua Hubner, a positive spinach Spodoptera exigua juvenile larva emergence period during the test; test crops: the variety is sharp wave and grows well.
3 time and frequency of application
The medicine is applied once every 11 months and 3 days in 2019.
4 capacity of use
50 liters of pesticide spraying liquid is sprayed per mu, and 750 liters of pesticide spraying liquid is sprayed per hectare.
5 investigation time and number of surveys
Conducting cardinality surveys as per protocol requirements: before application; and (4) second investigation: 2 days after application; and (3) third investigation: 7 days after application.
6 results of the experiment
TABLE 6 EXAMPLE 4 test results of field efficacy of spinach and beet armyworm
Figure BDA0003667340060000161
As can be seen from table 6, the 22% methoxyfenozide/deltamethrin suspension concentrate of example 4 has good quick-acting performance on spinach beet armyworms, the control effects on spinach beet armyworms are between 86.73% and 93.47% for 2 days after the application by 5g/667 square meter treatment, 10g/667 square meter treatment and 15g/667 square meter treatment of test medicaments, and the control effects on spinach beet armyworms are 81.27% and 80.67% for 240g/L methoxyfenozide suspension concentrate of control medicaments, 20g/667 square meter treatment and 25g/L deltamethrin emulsifiable concentrate of 40g/667 square meter treatment.
The test medicament 22% methoxyfenozide/deltamethrin suspending agent has excellent control effect on spinach asparagus caterpillars, and the control effect on the asparagus caterpillars is up to more than 92.41% after the test medicament 22% methoxyfenozide/deltamethrin suspending agent is applied for 7 days;
the analysis is carried out by applying a Duncan new repolarization method, the result shows that 7 days after the application, the difference between the control effects of 5g/667 square meter treatment and 15g/667 square meter treatment on the spinach beet armyworm of a test medicament 22% methoxyfenozide-deltamethrin suspension agent, the significant difference exists between the control effects of 10g/667 square meter treatment and a control medicament 240g/L methoxyfenozide suspension agent, 20g/667 square meter treatment and 40g/667 square meter treatment on the spinach beet armyworm of 25g/L deltamethrin emulsifiable concentrate, and the control effects of the test medicament are better.

Claims (8)

1. An insecticidal composition containing methoxyfenozide, which is characterized in that: the composition consists of methoxyfenozide, deltamethrin, an auxiliary agent and other excipients, and is prepared into a suspending agent, wherein the weight ratio of methoxyfenozide to deltamethrin is 9 to 1.
2. The insecticidal composition of claim 1, wherein: the weight ratio of methoxyfenozide to deltamethrin is 19.
3. The insecticidal composition according to claim 1 or 2, characterized in that: the content of effective active ingredients of the methoxyfenozide and the deltamethrin is 11-44%.
4. The insecticidal composition of claim 3, wherein: the content of the effective active ingredients of the methoxyfenozide and the deltamethrin is 22 percent.
5. The insecticidal composition according to claim 1, characterized in that: the application of the insecticidal composition in pest control.
6. The insecticidal composition of claim 5, wherein: the pests are beet armyworms.
7. The insecticidal composition of claim 1, wherein: the auxiliary agent and the excipient are selected from one or more of dispersing agent, wetting agent, antifreezing agent, preservative, defoaming agent, pH regulator, thickening agent and water.
8. An insecticidal composition according to any one of claims 1 to 7, characterized in that: the dosage of the effective component of the insecticidal composition is 16.5 to 49.5 g/ha.
CN202210600309.9A 2022-05-27 2022-05-27 Insecticidal composition containing methoxyfenozide Pending CN115281193A (en)

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