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Acaricidal composition containing bifenazate

A technology of bifenazate and a composition is applied in the field of phytochemical protection, can solve the problems of high use cost of bifenazate, short duration of effect, high resistance risk, etc. Long-term, low pesticide residue effect

Active Publication Date: 2020-02-11
山东种业智科农业科技服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high cost of using bifenazate, high risk of resistance and short duration of effect, the present invention provides an acaricidal composition containing bifenazate. The composition containing tannin has good biological activity, High safety to crops

Method used

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  • Acaricidal composition containing bifenazate
  • Acaricidal composition containing bifenazate
  • Acaricidal composition containing bifenazate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Preparation of Suspension Containing Tannin and Bifenazate

[0016] Composition in weight percent: bifenazate 21.5%; tannin 50%; alkyl polyoxyethylene ether sulfonate 5%, nonylphenol polyoxyethylene ether 1%; xanthan gum 0.2%; organic silicone 0.3% ; Pure water makes up 100%.

[0017] Preparation: Add bifenazate, alkyl polyoxyethylene ether sulfonate, nonylphenol polyoxyethylene ether, silicone defoamer and 1 / 10 of tannin into part of the water, shear and pre-disperse, and then Put it into a sand mill for sand milling until the particle size reaches the specified discharge; the aqueous solution containing tannin and xanthan gum is sheared and mixed evenly to obtain 21.5% bifenazate suspension concentrate.

Embodiment 2

[0018] Example 2 Indoor bioassay

[0019] 2.1 Tetranychus cinnabarinus and Tetranychus urticae

[0020] The combined toxicity of tannin and bifenazate to Tetranychus cinnabarinus and Tetranychus urticae were respectively determined by spray method: 10 adult female mites were inoculated with broad bean seedlings, and the female adult mites were removed after 1 day of egg laying, and the eggs were hatched 3 Count nymphs every day; prepare bifenazate mother liquor with 0.1% Tween 80 solutions of different concentrations of tannin into emulsions of 6 series concentrations, spray with Potter spray tower, repeat each concentration 5 times, check the number of dead insects after 48 hours, Calculate LC with SPSS 20.0 50 with the regression equation. According to LC 50 Calculate synergy factor (SR):

[0021] Synergistic factor (SR) =

[0022] If the synergistic coefficient (SR) ≥ 1.2 means there is a synergistic effect; 0.8 < CTC < 1.2 means an additive effect; CTC ≤ 0.8 means a...

Embodiment 3

[0036] Embodiment 3 field efficacy test

[0037] In Example 1, 21.5% bifenazate suspending agent, 43% bifenazate suspending agent (registration number PD20096837) and 43% bifenazate suspending agent (registration number PD20096837) were mixed with tannin tank (tannin tank The mixed concentration is 1%) to prevent and control Tetranychus cinnabarinus on cotton, Tetranychus urticae on cowpea, Apple spider mite and Citrus spider mite on Bergamot.

[0038] 3.1 Tetranychus cinnabarinus (Cotton Institute Base in the Southern Suburbs of Linqing City, Shandong Province)

[0039] Control of Tetranychus cinnabarinus on cotton: the area of ​​each plot is 50m 2 , repeat 4 times, use an electric sprayer to spray and control, and the water consumption is 675 kg / hm 2 , and the blank control was sprayed with the same amount of water. Investigate the base number of pest mites in each treatment before spraying, 1, 7, 14, and 21 days after spraying, randomly pick 25 leaves from each treatment...

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Abstract

The invention provides an acaricidal composition containing bifenazate. The acaricidal composition also contains tannin; a mass ratio of tannin to bifenazate is 10:1 to 1:10; and the composition contains 0.1-99.9 wt% of tannin and bifenazate is, and the balance of auxiliary materials. The acaricidal composition containing bifenazate has the advantages of good effect on phytophagous mites on various crops, high field control effect, long lasting period and low chemical agent dosage; and the tannin has a low price, and can achieve a synergistic effect after being mixed with bifenazate in order to reduce the dosage of effective components. Tannin can also reduce the dosage of an antifreeze agent and a preservative in a suspending agent, so that the cost of a preparation is reduced. The acaricidal composition containing bifenazate is safe to plants, people and livestock, makes the pesticide residue of agricultural products low, and meets the requirements of pesticide reduction and synergy.

Description

technical field [0001] The invention relates to an acaricidal composition containing bifenazate, which belongs to the field of phytochemical protection. Background technique [0002] Bifenazate (bifenazate), chemical name 3-(4-methoxybiphenyl-3-yl) isopropyl carbazate, belongs to bifenazate acaricide, bifenazate is a new type Acaricide for selective foliar spray. Its mechanism of action is a unique effect on the aminobutyric acid (GABA) receptor of the central nervous system of mites. It is effective against all life stages of mites, has ovicidal activity and knockdown activity against adult mites (48-72h), and the persistence period can reach 14d. It is safe for crops within the recommended dosage range. Low risk to parasitic wasps, predatory mites, lacewings. However, the use of bifenazate has high cost, the risk of gradually increasing resistance, and its duration of effect is short. Reasonable mixing with other ingredients plays an important role in prolonging the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/24A01N43/90A01P7/02
CPCA01N43/90A01N47/24
Inventor 马惠信彩云林香青赵庆雷陈博聪
Owner 山东种业智科农业科技服务有限公司
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