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Compound acaricide containing diafenthiuron and pyrethrin

A technology of pyrethrins and diafenthiuron, which is applied in the direction of acaricides, biocides, animal repellants, etc., can solve the problems of short duration, large dosage of pest mites, and poor light stability of natural pyrethrins, etc., to achieve Convenient storage and use, delaying the resistance of harmful mites, and superior acaricidal effect

Inactive Publication Date: 2014-10-08
云南省农业科学院蚕桑蜜蜂研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the photostability of natural pyrethrins is poor, resulting in a short duration, and natural pyrethrins are separated and extracted from pyrethrum flowers, and the cost is relatively high
[0005] However, the long-term use of diafenthiuron and pyrethrins has increased the resistance of pest mites, resulting in large amounts of pesticides, high cost, poor effect, and serious environmental pollution. On top of that, a new type of acaricide with excellent control effect and low resistance to insecticides has been developed.

Method used

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  • Compound acaricide containing diafenthiuron and pyrethrin
  • Compound acaricide containing diafenthiuron and pyrethrin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Determination of co-coefficient of diafenthiuron and pyrethrin mixture

[0028] The present invention uses the glass slide dipping method recommended by FAO to determine the combined toxicity of diafenthiuron and pyrethrin mixture to Tetranychus cinnabarinus, and uses Sun Yunpei’s method that is the method of calculating the combined toxicity of the mixture to calculate the co-existence coefficient. A co-degree significantly greater than 100 is synergistic, close to 100 is additive, and significantly less than 100 is antagonistic. The co-degree coefficients of diafenthiuron and pyrethrin in different ratios are shown in Table 1.

[0029] Table 1 Toxicity test results of diafenthiuron and pyrethrin mixed to Tetranychus cinnabarinus

[0030]

[0031] Note: Relative toxicity RT1 = pyrethrin LC 50 / Mixture LC 50 ; Relative toxicity RT2 = diafenthiuron LC 50 / Mixture LC 50 .

[0032] The measurement results in Table 1 above show that diafenthiuron and pyrethrin have a sig...

Embodiment 2

[0033] Example 2 The mass ratio of each component of the microemulsion

[0034] Mix 2% diafenthiuron and 7% pyrethrum as the original drug, and dissolve the original drug with 5% ethyl acetate, 10% chloroform, 10% cyclohexanone, 5% isopropanol, and 15% n-pentanol. Add 5% fatty acid polyethylene glycol ester, 5% sodium lauryl sulfate, and 2% glycerin to the dissolution of the original drug in sequence. Tap water to make up 100%, stir and disperse evenly with a high-speed shearing instrument to obtain 2% diafenthiuron and 7 % Pyrethrin compound microemulsion.

Embodiment 3

[0035] Example 3 The mass ratio of each component of the water emulsion

[0036] Mix 2% diafenthiuron and 11% pyrethrum as the original drug, and dissolve the original drug with 5% ethanol, 5% ethyl acetate, 5% isobutanol, 5% isopropanol, and 5% n-pentanol. Add 5% sodium lignosulfonate, 5% fatty acid polyethylene glycol ester, 5% agricultural milk 500, 5% agricultural milk 1601, 5% ammonium sulfate, 2% polyvinylpyrrolidone in the dissolving, and make up 100% of tap water, high speed The shearer stirs and disperses evenly. A 2% diafenthiuron and 11% pyrethrin compound water emulsion was prepared.

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Abstract

The invention discloses a compound acaricide containing diafenthiuron and pyrethrin. The compound acaricide is prepared from diafenthiuron in weight percent of 1%-30%, pyrethrin in weight percent of 1%-20% and auxiliaries. According to a large number of experimental research screening, diafenthiuron and pyrethrin are compounded in a specific mass ratio to achieve the synergistic interaction effect; under the same dosage, the compounded acaricide has an anti-mite effect superior to that of single diafenthiuron or single pyrethrin, the use concentration of the compound acaricide can be greatly reduced, the cost is low, the environment pollution is small, the drug resistance of mites can be effectively delayed, and the compound acaricide has important economic value and social value.

Description

Technical field [0001] The invention relates to a pesticide preparation, in particular to a high-efficiency acaricide with diafenthiuron and pyrethrin as main active ingredients. Background technique [0002] Phytophagous pest mites have become one of the most difficult pests due to their basic ecological countermeasures such as short reproductive cycle, small individual, fast growth, strong reproductive power and easy to produce resistance. [0003] The chemical name of diafenthiuron is [1-tert-butyl-3-(2,6-diisopropyl-4-phenoxyphenyl) thiourea], and its trade name is Trifenuron and Baolu. A new type of thiourea insecticide and acaricide with a brand-new chemical structure, which has the functions of contact killing, stomach poisoning, systemic absorption and fumigation. Diafenthiuron needs to be decomposed into carbodiimide derivatives under ultraviolet radiation or under the action of multifunctional oxidases in the insects to have biological activity. Carbodiimide can selectiv...

Claims

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Application Information

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IPC IPC(8): A01N65/12A01P7/02A01N47/30
Inventor 罗雁婕杨振国谢道燕倪婧柴建萍黄平达爱斯江秀均
Owner 云南省农业科学院蚕桑蜜蜂研究所
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