Synergistic insecticidal composition containing tolfenpxrad and S-fenvalerate and application thereof

An insecticidal composition and a technology of fenvalerate, which are applied in the field of pesticides, can solve the problems of high drug cost for farmers, inability to protect crops, and easy generation of drug resistance, so as to reduce the amount of pesticides used in the field, reduce pesticide residues, and reduce labor for prevention and control. cost effect

Active Publication Date: 2013-04-17
NANJING HUAZHOU PHARMA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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.

Method used

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  • Synergistic insecticidal composition containing tolfenpxrad and S-fenvalerate and application thereof
  • Synergistic insecticidal composition containing tolfenpxrad and S-fenvalerate and application thereof
  • Synergistic insecticidal composition containing tolfenpxrad and S-fenvalerate and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Fenpyran and S-fenvalerate were weighed and prepared in different proportions according to conventional preparation methods to prepare tolfenpyrad·S-fenvalerate emulsifiable concentrate with a main active ingredient weight percentage of 30%. See Table 1 for specific proportions.

[0022] The toxicity of pyrenpyrrole, S-fenvalerate and their compound samples to cotton bollworm was determined by feed poisoning 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:

[0023] Table 1 Toxicity determination and co-toxicity coefficient of toxinpyrad, S-fenvalerate and their compound samples to cotton bollworm

[0024]

[0025] The data in the table shows that, after the mixing of tolfenpyrad and S-fenvalerate, there is a synergistic effect on cotton bollworm, and the co-toxicity coefficients of the four ratios listed in the table are all greater than 120, so t...

Embodiment 2

[0027] Fenpyran and S-fenvalerate were weighed and prepared in different proportions according to conventional preparation methods to prepare tolfenpyrad·S-fenvalerate emulsifiable concentrate with a main active ingredient weight percentage of 30%. See Table 2 for specific proportions.

[0028] Determination of the toxicity of pyrenpyrad, S-fenvalerate and their compound samples to Plutella xylostella by dipping method, each treatment was repeated 3 times, with LC 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:

[0029] Table 2 Toxicity determination and co-toxicity coefficient of toxenpyrad, S-fenvalerate and their compound samples to Plutella xylostella

[0030]

[0031] The data in the table shows that the mixture of tonamirad and S-fenvalerate has a synergistic effect on Plutella xylostella, and the co-toxicity coefficients of the four ratios listed in the table are all far greater than 120. Therefore, tonpyran and S- The compounding of fenv...

Embodiment 3

[0033] Weigh 5g of pyrenpyrid, 20g of S-fenvalerate, 4g of calcium dodecylbenzenesulfonate, 3g of phenethylphenol polyoxyethylene ether, and xylene to 100g, and put the above raw materials into Mixing in a mixing tank to form a pyrenpyrid-S-fenvalerate emulsifiable concentrate whose main active ingredient is 25% by weight.

[0034] The sample prepared in Example 3 was used to carry out the field test of preventing and controlling cotton bollworm in the field. The contrast agent was 15% Fenpyramid EC and 5% S-fenvalerate EC. The water consumption per mu is 30kg, and the results are checked for 3 days, 7 days, 14 days, and 28 days after the medicine. The test results are shown in Table 3:

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Abstract

The invention belongs to the field of agricultural chemicals and discloses a synergistic insecticidal composition containing tolfenpxrad and S-fenvalerate and an application thereof. The insecticidal composition takes the tolfenpxrad and the S-fenvalerate as main active ingredients, wherein the weight ratio of the tolfenpxrad to the S-fenvalerate is (0.1-80):(0.5-80). The insecticidal composition has the effects of expanding a control spectrum and realizing synergy, can reduce the cost of medication, can be prepared into missible oil, wettable powder, micro-emulsion, aqueous emulsion, suspension and water dispersible granules, and can be used for preparing insecticidal medicaments for controlling lepidoptera, homoptera, hymenoptera, coleoptera and other various pests.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a synergistic insecticidal composition containing tolfenpyrad and S-fenvalerate and application thereof. Background technique [0002] Tolfenpyrad (Tolfenpyrad), chemical name: 4-chloro-3-ethyl-1-methyl-N-{[4-(4-methylphenoxy)phenyl]-methyl}-1H pyrazole -5-Carboxamide, off-white solid powder, density (25°C): 1.18g / cm, vapor pressure (25°C): <5×10Pa. Solubility (25°C): water 0.037mg / L, n-hexane 7.41g / L, toluene 366g / L, methanol 59.6g / L. Partition coefficient (n-octanol / water) (25°C): log Pow 5.61. The structural formula is: [0003] [0004] The acute toxicity of the tonfenpyrad preparation is: oral LD50 for rats 102 (male), 83 (female) mg / kg; oral LD50 for mice 104 (male), 108 (female) mg / kg. The acute percutaneous toxicity is relatively low, with LD50>2000mg / kg for rats and mice. Moderately irritating to rabbit eyes and skin. [0005] Fenpyramid is a new type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/56A01N37/38A01P7/04
Inventor 陈文明邢平郭崇友沈海峰韦琛鸿
Owner NANJING HUAZHOU PHARMA
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