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Synergistic pesticidal composition containing pymetrozine and bifenthrin and application thereof

An insecticidal composition and a technology for bifenthrin, which are applied in the field of pesticides, can solve problems such as undiscovered resistant Hemipteran pests, and achieve the effects of reducing labor costs for control, improving control effects, and improving control effects.

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

The inventor found through research that the compounding of pesticides is an effective measure to expand the control spectrum and improve the control effect. So far, no compound insecticidal composition related to nitenpyram and acetamiprop has been found to control resistant hemiptera. Order Pests

Method used

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  • Synergistic pesticidal composition containing pymetrozine and bifenthrin and application thereof
  • Synergistic pesticidal composition containing pymetrozine and bifenthrin and application thereof
  • Synergistic pesticidal composition containing pymetrozine and bifenthrin and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Pymetrozine and bifenthrin were weighed and prepared in different proportions by conventional preparation methods to prepare pymetrozine bifenthrin emulsifiable concentrate with a mass percentage of main active ingredients of 30%. See Tables 1 and 2 for specific ratios.

[0019] The toxicity of pymetrozine, bifenthrin and their compound samples to rice brown planthopper was determined by rice stem dipping method, each treatment was repeated 3 times, 30 heads were treated at each concentration, and LC 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:

[0020] Table 1 Toxicity determination and co-toxicity coefficient of pymetrozine and bifenthrin compound synergistic insecticidal composition against rice brown planthopper

[0021]

[0022] The data in the table shows that the mixture of pymetrozine and bifenthrin has a synergistic effect on rice brown planthopper, and the co-toxicity coefficients of the three ratios listed in the table are al...

Embodiment 2

[0028] Weigh 12.5g of pymetrozine, 12.5g of bifenthrin, 4g of calcium dodecylbenzenesulfonate, 3g of phenethylphenol polyoxyethylene ether, and xylene to 100g, and put the above raw materials into Mix in a mixing tank to form a preparation of 25% pymetrozine bifenthrin emulsifiable concentrate.

[0029] Adopt the sample that embodiment 2 is equipped to carry out the field test of field prevention and control rice brown planthopper, contrast agent is 25% pymetrozine WP and 25% bifenthrin EW, and concrete consumption is shown in Table 3, and water consumption per mu is 30kg, check after medicine. 3 days, 7 days, 14 days, 28 days results, the test results are shown in Table 3:

[0030] Table 3 example 2 sample is to the field test result of rice brown planthopper

[0031]

[0032] It can be seen from Table 3 that Example 2 has excellent quick-acting effect on rice brown planthopper, and has a long persistence period, and performs well in the field, and is an excellent agent f...

Embodiment 3

[0038] Weigh 1g of pymetrozine, 10g of bifenthrin, 8g of phenethylphenol polyoxyethylene ether, 10g of calcium dodecylbenzenesulfonate, and up to 100g of xylene, and put the above raw materials into the mixing tank according to the conventional method of preparing cream Mix in medium to form pymetrozine bifenthrin emulsifiable concentrate.

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Abstract

The invention discloses a synergistic pesticidal composition containing pymetrozine and bifenthrin and application thereof. The synergistic pesticidal composition adopts pymetrozine and bifenthrin as the main effective components, wherein the weight ratio of pymetrozine to bifenthrin is 0.1-70:0.1-80. The synergistic pesticidal composition can be used for preventing and controlling resistant hemiptera pests, particularly can be used for preventing and controlling paddy delphacidae, plant louses and bemisia tabaci, and the effect is obviously higher than the application of a single dose. The synergistic pesticidal composition has a higher synergistic effect, overcomes and delays drag resistance, and expands prevention and control spectrum. The synergistic pesticidal composition has the advantages of high pesticidal speed, long duration, reduction of cost and decrease of toxicity.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a synergistic insecticidal composition with pymetrozine and bifenthrin as main active ingredients and an application thereof. Background technique [0002] Pymetrozine, chemical name: 4,5-dihydro-6-methyl-4-(3-pyridinemethyleneamino)-1,2,4-3(2H)-one. Pymetrozine is a pyridinium imine 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, making them refuse to eat and die. The drug is effective on both larvae and adults, and has a long duration of action, without any cross-resistance, and is highly safe to natural enemies. High-efficiency broad-spectrum insecticide. It is particularly effective against Hemiptera and is mainly used to control pest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/06A01N43/707A01P7/04
Inventor 杨寿海袁竹青刘德友陈叶青李恺
Owner NANJING HUAZHOU PHARMA
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