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Plant source acaricide microemulsion with 1% scopolactone and preparation method thereof

A technology of scopolide and source acaricide, applied in the field of plant protection, can solve problems such as serious residues, achieve the effects of easy degradation, reduce environmental pollution, and avoid flammable and explosive phenomena

Inactive Publication Date: 2013-04-03
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although chemical acaricides such as dicofol have strong acaricidal activity, they have been banned due to their serious residues. At the same time, the resistance of harmful mites to pyridaben, spirofen, propargite, abamectin, etc. increasing

Method used

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  • Plant source acaricide microemulsion with 1% scopolactone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A plant source acaricide scopoletin 1% microemulsion, its composition and mass percentage are 1% scopoletin, 20% N-methylpyrrolidone, 2% agricultural milk 1602, 4% agricultural milk 1601 , 2% ethylene glycol, 3% n-octanol and the balance water.

[0022] The preparation method is:

[0023] (1) According to the stated mass percentage, mix the original drug of scopoletin with the solvent, stir at 40°C to dissolve it completely, then add an emulsifier and stir to form a uniform oil phase;

[0024] (2) According to the mass percentage, mix the antifreeze with water and stir to form a homogeneous water phase;

[0025] (3) Under stirring at 5000~10000 rpm, add the water phase to the oil phase, shear for 30~40 minutes, emulsify it to form an emulsion liquid, and obtain the microemulsion.

Embodiment 2

[0027] A plant source acaricide scopoletin 1% microemulsion, its composition and mass percentage are 1% scopoletin, 5% N-methylpyrrolidone, 5% dimethyl sulfoxide, 4% Termul2507 , 2% agricultural milk 1602, 2% agricultural milk 1601, 2% propylene glycol, 1% glycerin, 1% n-octanol, 1% organic silicon and the balance water. According to the mass percentage, the product preparation is the same as in Example 1.

Embodiment 3

[0029] A plant source acaricide scopoletin 1% microemulsion, its composition and mass percentage are 1% scopoletin, 10% N-methylpyrrolidone, 10% methanol, 10% ethyl acetate, 3 %Termul 2507, 2% agricultural milk 1602, 2% agricultural milk 1601, 3% NP-10, 1% ethylene glycol, 1% propylene glycol, 3% glycerin, 3% n-octanol and the balance water. According to the mass percentage, the product preparation is the same as in Example 1.

[0030] In order to clarify the control effect of this medicament on phytophagous pest mites, a large number of field drug efficacy tests have been carried out with the medicament of the present invention, which proves that the medicament is effective against Tetranychus cinnabarinus, Panonychus citrus, and tea yellow Herbivorous mites such as mites have a good control effect. This agent is diluted 200-400 times, which can effectively control the harm of Tetranychus cinnabarinus in cotton fields. After 7 days of application, the reduction rates of 200-...

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Abstract

The invention relates to a plant source acaricide microemulsion with 1% scopolactone and a preparation method thereof. The microemulsion comprises the following components by mass percent: 1 percent of scopolactone, 10-30 percent of solvent, 5-10 percent of emulsifier, 2-5 percent of antifreezer, 1-3 percent of foam killer and the balance of water. The preparation method comprises the following steps: mixing scopolactone active compound and the solvent, stirring at 40 DEG C to ensure complete resolution, adding the emulsifier and stirring to obtain uniform oil phase; mixing the antifreezer and water and stirring to obtain homogeneous water phase; and adding the water phase into the oil phase at the stirring rate of 5,000-10,000 turns / min, and shearing for 30-40 minutes to be emulsified into a liliquoid so as to obtain the microemulsion. The microemulsion provided by the invention is a low-toxicity, easy-to-degrade and low-residue plant source acaricide, and the scopolactone is extracted from artemisia annua residues from which artemisinin is extracted by petroleum ether and can serve contact, systemic, ovicidal, oviposition inhibition and other functions to phytophagous pest mites.

Description

technical field [0001] The invention relates to the technical field of plant protection, in particular to a 1% microemulsion of a plant-derived acaricide scopoletin and a preparation method thereof. Background technique [0002] There are many kinds of herbivorous mites, which are characterized by small size, fast reproduction, strong adaptability and easy to produce drug resistance. There are more than 40 species of mites that are seriously harmful, mainly spider mites and gall mites, which seriously harm citrus, Apples, cotton, vegetables, etc. At present, the varieties of acaricides commonly used in my country include pyridaben, dicofol, spirodiclofen, propargid, abamectin, etc.; the main dosage forms are emulsifiable concentrate, microemulsion, water emulsion, suspension concentrate, etc. Although chemical acaricides such as dicofol have strong acaricidal activity, they have been banned due to their serious residues. At the same time, the resistance of harmful mites to ...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01N25/02A01P7/02
Inventor 丁伟张永强杨振国罗金香秦培元
Owner SOUTHWEST UNIVERSITY
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