Synergistic insecticidal compound containing pymetrozine and chlorpyrifos-methyl and application thereof

A technology of chlorpyrifos-methyl and insecticidal composition, which is applied in the field of pesticides, can solve the problems of no effective preparations for the control of hemiptera pests, long-term use of insecticides, and decline, so as to reduce the amount of pesticides used in the field and reduce pesticide residues , the effect of reducing environmental pollution

Inactive 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

However, the insecticide has been used for a long time, and many pests have developed resistance to it
[0004] Hemiptera pests, such as aphids, planthoppers, leafhoppers, etc., have gradually increased their resistance at present, and the effect of single pesticides on pest control has gradually declined. There is no effective preparation for the control of Hemiptera pests

Method used

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  • Synergistic insecticidal compound containing pymetrozine and chlorpyrifos-methyl and application thereof
  • Synergistic insecticidal compound containing pymetrozine and chlorpyrifos-methyl and application thereof
  • Synergistic insecticidal compound containing pymetrozine and chlorpyrifos-methyl and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Pymetrozine and chlorpyrifos methyl were weighed and formulated into pymetrozine·chlorpyrifos methyl EC in different proportions in different proportions by conventional preparation methods. The specific ratio is shown in Table 1.

[0019] The virulence of pymetrozine and chlorpyrifos methyl and their compound samples to rice brown planthopper were determined by the rice stem dipping method. Each treatment was repeated 3 times, and each concentration was treated with 30. LC 50 The value is calculated by Sun Yunpei's method of co-toxicity coefficient:

[0020] Table 1 Determination of the virulence of pymetrozine, chlorpyrifos methyl and their mixed samples against rice brown planthopper and co-toxicity coefficient

[0021]

[0022] The data in the table shows that the mixture of pymetrozine and chlorpyrifos methyl has a synergistic effect on the rice brown planthopper. The co-toxicity coefficients of the three ratios listed in the table are far greater than 120, so the mixture...

Embodiment 2

[0024] Pymetrozine and chlorpyrifos methyl were weighed and formulated into pymetrozine·chlorpyrifos methyl EC in different proportions in different proportions by conventional preparation methods. The specific ratio is shown in Table 2.

[0025] The virulence of pymetrozine and chlorpyrifos methyl and their compound samples to wheat aphids was determined by leaf soaking method. Each treatment was repeated 3 times, and LC 50 The value is calculated by Sun Yunpei's method of co-toxicity coefficient:

[0026] Table 2 Determination of the virulence of pymetrozine, chlorpyrifos methyl and their mixed samples against rice brown planthopper and co-toxicity coefficient

[0027]

[0028] The data in the table shows that the mixture of pymetrozine and chlorpyrifos-methyl has a synergistic effect on wheat aphids. The co-toxicity coefficients of the three ratios listed in the table are far greater than 120, so pymetrozine and chlorpyrifos-methyl are mixed Has a significant synergistic effect. ...

Embodiment 3

[0030] Weigh 4g pymetrozine, 20g chlorpyrifos methyl, 4g calcium dodecylbenzenesulfonate, 3g phenethylphenol polyoxyethylene ether, xylene to 100g, and put the above raw materials into the mixing kettle according to the conventional method of preparing EC Mix to form a formulation of 30% pymetrozine·chlorpyrifos methyl EC.

[0031] The samples prepared in Example 3 were used to carry out field trials for the control of Laodelphax striatellus in rice fields. The control agents were 25% pymetrozine WP and 25% chlorpyrifos methyl EC. The specific dosage is shown in Table 3. The water consumption per mu is 30kg. Check the results for 3 days, 7 days, 14 days, and 28 days. The test results are shown in Table 3:

[0032] Table 3 Field test results of sample 3 on rice brown planthopper

[0033]

[0034] It can be seen from Table 3 that Example 3 has an excellent quick-acting effect on the rice brown planthopper, and the lasting effect is relatively strong. It performs well in the field and ...

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Abstract

The invention discloses a synergistic insecticidal compound containing pymetrozine and chlorpyrifos-methyl and application thereof. The insecticidal compound takes the pymetrozine and the chlorpyrifos-methyl as main effective components, wherein the weight ratio of the pymetrozine to the chlorpyrifos-methyl is 0.1-80:0.5-80. The insecticidal compound can generate higher synergistic action, overcomes and delays the resistance to drugs of pests, enlarges prevention and cure spectrum, has high insecticidal speed and long residual activity, reduces application cost and relieves toxicity. The synergistic insecticidal compound can prevent and cure Hemiptera pests on crops and can be especially used for preventing and curing rice plant hoppers and wheat aphids. The effect of the synergistic insecticidal compound is obviously better than that of single dose.

Description

Technical field [0001] The invention belongs to the field of pesticides, and specifically relates to an insecticidal composition with pymetrozine and chlorpyrifos methyl as main active ingredients and applications thereof. Background technique [0002] Pymetrozine (pymetrozine), chemical name: (E)-4,5-dihydro-6-methyl-4-(3-pyridinemethyleneamino)-1,2,4-triazine-3(2H )-ketone. It is a new type of heterocyclic insecticide developed by Swiss Novartis in 1988 to control aphids and whiteflies. It has the characteristics of high efficiency, low toxicity, high selectivity and environmental friendliness. Its mode of action is unique: it mainly affects the feeding behavior of insects, causing them to refuse to eat and die. The medicine is effective against both larvae and adults. It can quickly penetrate into plant leaves with a residual effect of more than one month, without any cross-resistance, and is highly safe to natural enemies. The technical pymetrozine is a white crystalline s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/16A01N43/707A01P7/04
Inventor 卢玉刚齐武夏小宝刘军丽陈文明张宝俊
Owner NANJING HUAZHOU PHARMA
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