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Synergistic insecticidal composition containing chlorfluazuron and chlorpyrifos-methyl and application thereof

A technology of chlorpyrifos methyl and an insecticidal composition, applied in the field of pesticides, can solve the problems such as the insecticidal composition of chlorpyrifos and chlorpyrifos methyl that have not been found, and achieves overcoming insect resistance, high synergistic effect, delaying Effects of pest resistance

Active Publication Date: 2011-04-20
NANJING HUAZHOU PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far no insecticidal combination of chlorpyrifos and chlorpyrifos has been found

Method used

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  • Synergistic insecticidal composition containing chlorfluazuron and chlorpyrifos-methyl and application thereof
  • Synergistic insecticidal composition containing chlorfluazuron and chlorpyrifos-methyl and application thereof
  • Synergistic insecticidal composition containing chlorfluazuron and chlorpyrifos-methyl and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Chlorpyrifos and chlorpyrifos were used to prepare nitenpyram-acidalpal emulsifiable concentrate with a main active ingredient mass percentage of 25% by conventional preparation methods. The weight ratio between the two is shown in Table 1.

[0017] The indoor toxicity of chlorfluazuron, chlorpyrifos-methyl and their compound samples to rice stem borer was determined by spot method. Each treatment was repeated 3 times, and each concentration was treated with 30 heads. 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:

[0018] Table 1 Toxicity determination and co-toxicity coefficient of chlorpyrifos, chlorpyrifos-methyl and their compound samples to rice stem borer

[0019]

[0020] The data in the table shows that: the combination of chlorpyrifos and chlorpyrifos has a synergistic effect on rice stem borer, and the co-toxicity coefficients of four of the five combinations listed in the table are all greater than 120, and when two The propor...

Embodiment 2

[0026] Adopt the sample prepared by embodiment 3 and 4, according to the dose of 50g, 60g per mu of land, the contrast agent is 5% chlorpyrifos EW60g / mu, 5% chlorpyrifos EC60g / mu, and the water consumption per mu is 30kg to prevent and control rice Field efficacy test of rice leaf roller. Check the results 3 days, 7 days, and 14 days after spraying, and perform data processing. The processing results are shown in Table 3:

[0027] Table 3 Field efficacy test of combined samples against rice leaf roller

[0028]

[0029] As can be found from Table 3, the quick-acting properties of the samples of Example 3 and Example 4 have been greatly improved, and the control effects on rice leaf rollers are greater than that of the reference agent. Therefore, we determined that the combination has an excellent synergistic effect on the control of the rice leaf roller, and is an ideal agent for the control of the rice leaf roller.

[0030] Adopt the sample prepared by embodiment 3 and 4...

Embodiment 3

[0035] Weigh 2.5g of chlorfluazuron, 2.5g of chlorpyrifos-methyl, 4g of calcium dodecylbenzenesulfonate, 3g of phenethylphenol polyoxyethylene ether, and xylene to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing emulsifiable concentrate, and mix to form a preparation of 52.5% chlorfluazuron-chlorpyrifos methyl emulsifiable concentrate.

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PUM

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Abstract

The invention discloses a synergistic insecticidal composition containing chlorfluazuron and chlorpyrifos-methyl and the application thereof. The synergistic insecticidal composition uses the chlorfluazuron and the chlorpyrifos-methyl as main active contents, wherein the weight ratio of the chlorfluazuron to the chlorpyrifos-methyl is 0.1-65 to 0.1-80. The insecticidal composition can generate higher synergy, overcome and delay the drug resistance of pests and expand control spectrum, has high insecticidal rate, decreases the drug cost and can be used for preventing resistant lepidoptera withthe effect remarkably higher than the single preparation thereof.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a synergistic insecticidal composition with chlorpyrifos and chlorpyrifos as main active ingredients and an application thereof. Background technique [0002] Chlorfluazuron, chemical name: 1-[3,5-dichloro-4-(3-chloro-5-trichloromethyl-2-pyridyloxy)phenyl]-3-(2,6 -difluorobenzoyl)urea. Chlorfluazuron is a widely used growth regulator with stomach toxicity and contact effects. The mechanism of action is to inhibit the synthesis of chitin, hinder the normal molting of insects, make the hatching of eggs, molting of larvae and the development of pupa deformed, and hinder the emergence of adults. It has high efficacy and slow action speed, and is highly active against a variety of Lepidoptera pests, as well as Orthoptera, Coleoptera, Hymenoptera, Diptera, etc., but it is ineffective against aphids, leafhoppers, and planthoppers. Chlorfluazuron in acute percutaneous LD in mamma...

Claims

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Application Information

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IPC IPC(8): A01N57/16A01N47/34A01P7/04
Inventor 齐武曹森倪锋曹志斌姜军伟
Owner NANJING HUAZHOU PHARMA
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