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Composite insecticidal composition suspending agent and preparation method thereof

A technology of insecticidal composition and suspending agent, which is applied in the field of composite insecticidal composition suspending agent and its preparation, and can solve problems such as inability to complete molting, death, and dehydration of larvae

Inactive Publication Date: 2015-03-25
孙素一
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the pest eats the loyal minister, it will soon have an abnormal molt reaction, stop feeding, and molt early, but cannot complete the molt due to abnormal molt, resulting in dehydration and starvation of the larvae and death

Method used

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  • Composite insecticidal composition suspending agent and preparation method thereof
  • Composite insecticidal composition suspending agent and preparation method thereof
  • Composite insecticidal composition suspending agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 40% Abamectin Furanfenozide Suspension Concentrate is prepared, and the distribution ratio of each component is by weight:

[0026]

[0027]

[0028] The preparation process is as follows: disperse abamectin and furantenozide original drug, phenethylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether, and part of water at high speed for 30 minutes according to the stated ratio, and sand The mill grinds the mixed material to a particle size of 5um or less, then goes to the post-mixing kettle, adds ethylene glycol, citric acid, xanthan gum, etc. and stirs evenly to obtain the finished product.

experiment example 1

[0030] Abamectin and furafenozide were weighed and prepared in different proportions according to the process in Example 1 to prepare an abamectin-furafenozide suspension concentrate with a total active ingredient weight percentage of 30%. See the table below for specific ratios.

[0031] The indoor synergistic bioassay was carried out by the leaf dipping method, and the resistant Plutella xylostella was selected as the target pest. Each treatment was repeated 3 times, and 60 heads were treated at each concentration. Medium concentration, use the LC50 value to calculate the co-toxicity coefficient according to Sun Yunpei's method to evaluate the mixed effect, usually showing three types of effects, namely synergistic, additive and antagonistic, when the co-toxicity coefficient (CTC) is greater than 120, it has a synergistic effect .

[0032] Actual toxicity index ATI(AB)=EC50 of A / EC50 of AB*100

[0033] Theoretical toxicity index TTI(AB)=TI(A)*A percentage in the mixture +T...

experiment example 2

[0039] The indoor synergistic bioassay was carried out by the leaf soaking method, and the resistant cotton bollworm was selected as the target pest. Each treatment was repeated 3 times, and 60 heads were treated at each concentration. For medium concentration, use LC50 value to calculate the co-toxicity coefficient according to Sun Yunpei's method to evaluate the mixed use effect.

[0040] The results are shown in the table below:

[0041] Table 2 Toxicity test results of abamectin and furafenozide compound and single agent against resistant cotton bollworm

[0042]

[0043]

[0044] It can be seen from Table 2 that the co-toxicity coefficients of avermectin and furanozide are all greater than 120 within the proportioning range, indicating that both have synergistic effects within this range.

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Abstract

The invention discloses a composite insecticidal composition suspending agent and a preparation method thereof. The composition comprises abamectin (A) and fufenozide (B), wherein the weight ratio of abamectin (A) to fufenozide (B) is (1-50) to (50-1). A composition is prepared into various pesticide formulations through the addition of an emulgator, a cosolvent, an antifreezing agent, a defoamer, a thickener, a stabilizer, a PH regulator and the like, but an environmental-friendly water-based suspending agent preparation is preferably selected. The composition has a synergistic interaction effect in the insecticidal efficacy, and can delay pest resistance to insecticides. The composite insecticidal composition suspending agent can prevent and control various injurious insects such as plant hoppers, whiteflies, aphides, thrips, diamond back moths, spodoptera exigua and mites on crops.

Description

Technical field: [0001] The invention relates to the technical field of pesticide preparations, in particular to a compound insecticidal composition suspension and a preparation method thereof. Background technique: [0002] Abamectin is a widely used agricultural or veterinary insecticide and acaricide. It is composed of Avermectin B1a and Avermectin B1b, wherein B1a is not less than 90% and B1b is not more than 5%. [0003] English name Abamectin, chemical formula C48H72O14(B1a) C47H70O14(B1b), molecular weight B1a: 873.09, B1b: 859.06, melting point 150-155°C, density 1.16, appearance: white or light yellow crystalline powder, flash point 150°C. [0004] Abamectin is a class of 16-membered macrolide compound with insecticidal, acaricidal and nematicidal activities firstly developed by Satoshi Omura of Kitasato University in Japan and Merck Company of the United States. avermitilis produced by fermentation. [0005] Abamectin has stomach poisoning and contact killing ef...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N25/04A01P7/02A01P7/04A01N43/12
Inventor 孙素一
Owner 孙素一
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