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Compound pesticidal composition containing cyfluthrin and thiamethoxam and application thereof

A technology of insecticidal composition and cyfluthrin, applied in the direction of insecticide, application, biocide, etc., can solve the problem of undiscovered cyfluthrin and thiamethoxam insecticidal composition, etc., to overcome pest resistance and reduce dosage , good control effect

Inactive Publication Date: 2012-10-03
江苏春江农化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors have found that cyfluthrin and thiamethoxam have a good compound synergistic effect and can delay the generation of resistance, and no insecticidal composition related to cyfluthrin and thiamethoxam has been found so far

Method used

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  • Compound pesticidal composition containing cyfluthrin and thiamethoxam and application thereof
  • Compound pesticidal composition containing cyfluthrin and thiamethoxam and application thereof
  • Compound pesticidal composition containing cyfluthrin and thiamethoxam and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With cyfluthrin and thiamethoxam as insecticidal active ingredients, weigh cyfluthrin and thiamethoxam in total 20g, calcium dodecylbenzenesulfonate 6g, phenylethylphenol polyoxyethylene ether polyoxypropylene ether 5g, fatty alcohol Polyoxyethylene ether 2g, solvent naphtha up to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing emulsifiable concentrate, and mix them to prepare cyfluthrin·thiamethoxam emulsifiable concentrate with a main active ingredient of 20% by weight. See Tables 1 and 2 for specific weight ratios of the active ingredients.

[0027] Indoor synergistic bioassay was carried out by dipping slide method, and resistant aphids were selected as target pests, each treatment was repeated 3 times, and 60 heads were treated at each concentration, and the toxicological regression equation and lethal median of each drug resistant aphids were calculated by the probability value method. Concentration LC 50 ,...

Embodiment 2

[0042] Embodiment 2: Take by weighing 25g cyfluthrin, 5g thiamethoxam, 3g of phenethylphenol polyoxyethylene ether phosphate, agricultural milk 33#2g, agricultural milk 600#2g, castor oil polyoxyethylene ether 3g, solvent naphtha 13g , Ethylene glycol 5g, add water to 100g. The above raw materials are processed according to the conventional method of preparing water emulsion to prepare cyfluthrin·thiamethoxam water emulsion with a main active ingredient weight percentage of 30%.

Embodiment 3

[0043] Embodiment 3: Take by weighing 10g cyfluthrin, 3g thiamethoxam, calcium dodecylbenzenesulfonate 6g, phenethylphenol polyoxyethylene ether phosphate ester 3g, agricultural milk 33# 2g, 600# 1g, cyclohexanone 10g, 5g of n-butanol, add water to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing microemulsions and mix them to prepare a cyfluthrin·thiamethoxam microemulsion with a main active ingredient weight percentage of 13%.

[0044] Carry out the drug efficacy test of controlling wheat aphid to embodiment 3, contrast medicament is 20% thiamethoxam WP (wettable powder) and 20% cyfluthrin EC (emulsifiable concentrate), dilute according to the dilution factor in table 3, check after medicine The results of 3 days and 7 days, the processing results are shown in Table 3:

[0045] Table 3: Field test results of cyfluthrin-thiamethoxam compound against wheat aphids

[0046]

[0047] Field drug efficacy results show that...

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Abstract

The invention discloses a compound pesticidal composition containing cyfluthrin and thiamethoxam and application thereof. The pesticidal composition adopts cyfluthrin and thiamethoxam as pesticidal active ingredients, wherein the weight ratio of cyfluthrin to thiamethoxam is 1 to 60:1 to 60. The pesticidal composition can generate a high synergistic effect, and can overcome and retard the pesticide resistance of pests, the pesticidal speed is high, the persistence is long, the application cost is reduced, and the control effect of the compound pesticidal composition is far better than the control effect of single agents. The compound pesticidal composition can control resistant insect pests of hemiptera on crops, and particularly can be used for controlling mealy aphids, leafhoppers and whiteflies, and the effect of the compound pesticidal composition is far better than the effect of single agents.

Description

technical field [0001] The invention belongs to the field of agricultural insecticides containing heterocyclic compounds, and specifically relates to a compound insecticidal composition containing cyfluthrin and thiamethoxam and its application. Background technique [0002] Cyfluthrin (Cyfluthrin), chemical name: (RS) α-cyano-4-fluoro-3-phenoxybenzyl (1RS, 3RS; 1RS, 3RS)-3-(2,2-dichlorovinyl) -2,2-Dimethylcyclopropanecarboxylate. The molecular formula is: C 22 h 18 Cl 2 FNO 3 , the structural formula is as follows: [0003] [0004] Cyfluthrin (Cyfluthrin) is the first pyrethroid insecticide developed by Bayer in Germany. The original drug is a brown viscous liquid with a relative density of 1.27-1.28g / cm 3 , Vapor pressure>1.33×10 at 20°C -8 Pa,. Soluble in acetone, ether, toluene, methylene chloride and other organic solvents, slightly soluble in alcohol, insoluble in water. It is stable in acid and sunlight, but unstable in alkaline with a pH value greater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/08A01N51/00A01P7/04
Inventor 庄夕华张和平臧建忠
Owner 江苏春江农化有限公司
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