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Composite insecticidal and acaricidal nano aqueous agent containing fenpropathrin and lambda-cyhalothrin, and uses thereof

A technology containing lambda-cyhalothrin and fenpropathrin, which is applied in the field of pesticides, can solve problems such as environmental hazards, potential safety hazards, and narrow insecticidal spectrum, so as to reduce production and use costs, reduce the amount of pesticides used, The effect of improving the control effect

Inactive Publication Date: 2020-04-10
NANJING HUAZHOU PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Insecticide varieties containing a single component often have defects in the control of pesticide pests: continuous use is easy to produce resistance, narrow insecticidal spectrum, cannot provide comprehensive protection for crops, and the cost of pesticides for farmers is high.
[0005] At present, the conventional formulations of fenpropathrin and lambda-cyhalothrin are mainly emulsifiable concentrates, which contain a large amount of organic solvents, which pose safety hazards in production and cause serious harm to the environment in field use.

Method used

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  • Composite insecticidal and acaricidal nano aqueous agent containing fenpropathrin and lambda-cyhalothrin, and uses thereof
  • Composite insecticidal and acaricidal nano aqueous agent containing fenpropathrin and lambda-cyhalothrin, and uses thereof
  • Composite insecticidal and acaricidal nano aqueous agent containing fenpropathrin and lambda-cyhalothrin, and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Indoor toxicity test

[0027] 1. Taking the female adults of Tetranychus cinnabarinus as the test object, adopt the leaf butterfly spray method (see "NY / T1154.13-2008 Pesticide Indoor Bioassay Test Guidelines Insecticides. Part 13: Leaf butterfly spray method") to determine The synergistic effect of different ratios of compounding fenpropathrin and lambda-cyhalothrin for killing insects and acarids, and calculating the co-toxicity coefficient (CTC value) of the composition according to Sun Yunpei's method:

[0028] Single-dose toxicity index = standard drug LC50 / some single-dose LC50×100;

[0029] Theoretical toxicity index (TTI) = Toxicity index of single agent A × proportion of single agent A in the mixture + toxicity index of single agent B × proportion of single agent B in the mixture;

[0030] Actual toxicity index (ATI) = LC50 value of standard single agent / LC50 value of mixed agent × 100;

[0031] Co-toxicity coefficient (CTC) = measured toxicity index (ATI...

Embodiment 2

[0048] Recipe: 10g fenpropathrin, 1g lambda-cyhalothrin, 3g sodium fatty acid methyl ester sulfonate, 3g tristyrylphenol polyoxyethylene ether phosphate, 2g styrylphenol polyoxyethylene ether, add water to 100g

[0049] The preparation method is the same as that in Example 1, and 11% of fenpropathrin-effective-cyhalothrin compound nano-aqueous agent is obtained.

[0050] The appearance of the nano water agent of this embodiment is transparent and yellowish, the viscosity is 187 mPa·s, and the average particle diameter is 19.5 nanometers.

[0051] After 7d cold storage at 0°C and 14d hot storage at 54°C, the preparation did not precipitate and remained stable.

[0052] The nano-aqueous agent of this embodiment can be miscible with water quickly after entering water, forming a completely transparent solution, and the dilution stability is qualified.

Embodiment 3

[0054] Formula: 5g fenpropathrin, 1g lambda-cyhalothrin, 4g styrylphenol polyoxyethylene ether, 3g alkylphenol polyoxyethylene ether phosphate, add water to 100g.

[0055] The preparation method is the same as in Example 1, and 6% fenpropathrin-effective-cyhalothrin compound nano-aqueous agent is obtained.

[0056] The appearance of the nano water agent of this embodiment is transparent and yellowish, the viscosity is 180 mPa·s, and the average particle diameter is 21 nanometers.

[0057] After 7d cold storage at 0°C and 14d hot storage at 54°C, the preparation did not precipitate and remained stable.

[0058] The nano-aqueous agent of this embodiment can be miscible with water quickly after entering water, forming a completely transparent solution, and the dilution stability is qualified.

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Abstract

The invention discloses a composite insecticidal and acaricidal nano aqueous agent containing fenpropathrin and lambda-cyhalothrin, wherein the composite insecticidal and acaricidal nano aqueous agentis prepared from active ingredients of fenpropathrin and lambda-cyhalothrin, a surfactant and water, the weight percentage content of the fenpropathrin and the lambda-cyhalothrin is 3-80%, the weightpercentage content of a pesticide adjuvant is 5-20%, the balance is water, and a weight ratio of fenpropathrin to lambda-cyhalothrin is (20:1)-(1:20). The insecticidal composition can generate high synergistic effect, overcomes and delays the drug resistance of pests, is high in insecticidal speed and long in lasting period, reduces the medication cost, has obviously high prevention and control effect compared with a single agent, can prevent and control lepidoptera pests on crops, especially can be used for preventing and controlling helicoverpa armigera and tetranychus cinnabarinus, and hassignificantly high effect compared with the use of a single agent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a composite insecticidal and acaricidal nanometer water agent containing fenpropathrin and lambda-cyhalothrin and its application. Background technique [0002] Fenpropathrin, chemical name: 2-cyano-3-phenoxybenzyl-2,2,3,3-tetramethylcyclopropanoate. High-efficiency, broad-spectrum pyrethroids with contact and repellent effects, as well as stomach toxicity. In addition to the general synthetic pyrethrin properties, it has good effects on a variety of crop spider mites, so it has the advantage of killing both insects and mites. Highly effective against Lepidoptera larvae and effective against Diptera or Hemiptera pests. It can be used to control pests on cotton, fruit trees, vegetables, tea and flowers. [0003] Lambda-cyhalothrin, molecular formula: C 23 h 19 CIF 3 NO 3 . Chemical name: α-cyano-3-phenoxybenzyl 3-(2-chloro-3,3,3-trifluoropropenyl)-2,2-dimethylcyclopro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/08A01P7/02
CPCA01N53/00
Inventor 洪鹏马诚义郭崇友陈叶青白杰
Owner NANJING HUAZHOU PHARMA
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