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Complex insecticidal composition containing tolfenpxrad and chlorpyrifos and application thereof

The technology of an insecticidal composition and tozafenamide, which is applied in the field of pesticides, can solve the problems that the pest control effect is reduced, the insecticidal composition of tolafenamide and chlorpyrifos has not been found, and achieves overcoming the resistance of pests, delaying the resistance of insects, The effect of resistance enhancement

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

AI Technical Summary

Problems solved by technology

[0009] However, the resistance of diamondback moth and thrips onion under the current long-term application conditions gradually increases, and the effect of single-dose pesticides on pest control gradually decreases.
The inventor found through research that the synergistic compounding of pesticides is an effective measure to expand the control spectrum and improve the control effect. So far, no insecticidal composition related to tonamirad and chlorpyrifos has been found.

Method used

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  • Complex insecticidal composition containing tolfenpxrad and chlorpyrifos and application thereof
  • Complex insecticidal composition containing tolfenpxrad and chlorpyrifos and application thereof
  • Complex insecticidal composition containing tolfenpxrad and chlorpyrifos and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weighing tonamiprole and chlorpyrifos are prepared in different proportions by conventional preparation methods to prepare tonamiprole·chlorpyrifos emulsifiable concentrate with a main active ingredient weight percentage of 30%. See Tables 1 and 2 for specific ratios.

[0023] Indoor synergistic bioassay was carried out by dipping method, the resistant Plutella xylostella was selected as the target pest, each treatment was repeated 3 times, and 60 heads were treated at each concentration, and the toxicological regression equation and lethal medium of each pesticide resistant Plutella xylostella were calculated by the probability value method. Concentration LC 50 , with LC 50 The co-toxicity coefficient was calculated according to Sun Yunpei method, and the results are shown in Table 1:

[0024] Table 1 Toxicity determination of toxinpyrad and chlorpyrifos compound and single dose against resistant Plutella xylostella

[0025]

[0026] It can be seen from Table 1 t...

Embodiment 2

[0033] Weigh 2g of pyrenpyrifos, 18g of chlorpyrifos, 6g of calcium dodecylbenzenesulfonate, 3g of phenylethylphenol polyoxyethylene ether phosphate, and 33g of agricultural milk # 2g, 1g of alkylphenol polyoxyethylene ether, 10g of cyclohexanone, add water to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing microemulsions, and mix them to form a tonamiprole·chlorpyrifos microemulsion with a main active ingredient of 20% by weight.

[0034] Example 2 is carried out to prevent and control vegetables Plutella xylostella drug effect test, contrast agent is 48% chlorpyrifos EC (emulsifiable concentrate) and 15% tolfenpyrad EC, dilutes according to the dilution multiple in table 3, and with clear water as blank control, after medicine Check the results of 3 days, 7 days, 14 days and 28 days. The processing results are shown in Table 3:

[0035] Table 3: Field test results of the combination of tonamiprole and chlorpyrifos on P...

Embodiment 3

[0043] Weigh 5g tonamiprole, 50g chlorpyrifos, 3g phenethylphenol polyoxyethylene ether phosphate, agricultural milk 33 # 2g, 1g of alkylphenol polyoxyethylene ether, 13g of xylene, add water to 100g. Put the above raw materials into a mixing tank according to the conventional method for preparing emulsion in water and mix at a high speed to form a tonamiprole·chlorpyrifos emulsion in water with a main active ingredient of 55% by weight.

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Abstract

The invention belongs to the field of agricultural chemicals and discloses a complex insecticidal composition containing tolfenpxrad and chlorpyrifos and an application thereof. The insecticidal composition takes the tolfenpxrad and the chlorpyrifos as main active ingredients, wherein the weight ratio of the tolfenpxrad to the chlorpyrifos is (0.1-80):(0.5-80). The insecticidal composition can produce higher cooperative and synergistic action, overcome and delay drug resistance of pests, realize high pest-killing speed and long lasting period, reduce the cost of medication and enable the control effect to be higher than that of a single agent. The insecticidal composition disclosed by the invention can be used for controlling homoptera, lepidoptera, thysanoptera or mite type pests on crops, and has special efficacy for controlling lepidoptera diamond back moths, thysanoptera thrips and other pests, and the effects are obviously higher than those of the single agent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a compound insecticidal composition containing tolfenpyrad and chlorpyrifos and an 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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IPC IPC(8): A01N57/16A01N43/56A01P7/04A01P7/02
Inventor 陈文明王红明郭崇友沈海峰乔璐曼
Owner NANJING HUAZHOU PHARMA
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