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Application of artemisia carvifolia extract in control of tobacco thrips

A technology of extract and Thrips tobacco, applied to the new application field of Artemisia annua extract in the prevention and control of Thrips tobacco, can solve problems such as no successful reports, and achieve good control effect, rapid action, and strong insecticidal effect effect of action

Inactive Publication Date: 2014-03-05
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are very few studies on the use of Artemisia annua in the control of agricultural pests, especially the use of Artemisia annua for the control of Thrips tabaci has not yet been successfully reported.

Method used

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  • Application of artemisia carvifolia extract in control of tobacco thrips
  • Application of artemisia carvifolia extract in control of tobacco thrips
  • Application of artemisia carvifolia extract in control of tobacco thrips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Preparation of Artemisia annua extract: take the fresh leaves of Artemisia annua, dry them in the shade, crush them, add 95% ethanol to soak them overnight at a material-liquid ratio of 1:4 (w / w), use ultrasonic-assisted extraction for 10 minutes, perform liquid-solid separation, and depressurize The solvent in the liquid phase is evaporated to obtain the Artemisia annua extract.

[0014] Add the OP-10 emulsifier to the extract of Artemisia annua at a ratio of 1% of the total volume and dissolve it with ethanol to prepare an extract solution of Artemisia annua with a content of 1% (w / w). The Artemisia annua extract solution was mixed with water, the water consumption was 50 kg / mu, and 5% natural pyrethrin EC was used as a control for foliar spraying. The details are shown in Table 1.

[0015] From the data in Table 1, it can be seen that the Artemisia annua extract solution has a good control effect on tobacco thrips, and its control effect is equivalent to 5% natural ...

Embodiment 2

[0020] Add the OP-10 type emulsifier to the ethanol extraction extract of Artemisia annua at a ratio of 10% of the total volume and dissolve it with ethanol to make a 10% (w / w) ethanol extraction extract solution of Artemisia annua, which is used for thistle Horse control. The ethanol extraction extract solution of Artemisia annua was mixed with water, the water consumption was 50 kg / mu, and 5% natural pyrethrin EC was used as a control for foliar spraying. The details are shown in Table 2.

[0021] Table 2. Control effect of 10% Artemisia annua ethanol extract extract solution on Thrips tabaci

[0022]

Embodiment 3

[0024] Add the OP-10 emulsifier to the ethanol extraction extract of Artemisia annua at a ratio of 20% of the total volume and dissolve it with ethanol to make a 20% (w / w) ethanol extraction extract solution of Artemisia annua, which is used for thistle Horse control. The ethanol extraction extract solution of Artemisia annua was mixed with water, the water consumption was 50 kg / mu, and 5% natural pyrethrin EC was used as a control for foliar spraying. The details are shown in Table 3.

[0025] Table 3. Control effect of 20% Artemisia annua ethanol extract extract solution on Thrips tabaci

[0026]

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PUM

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Abstract

The invention discloses a new application of a plant namely artemisia carvifolia, namely the application of an artemisia carvifolia extract in control of tobacco thrips. The artemisia carvifolia extract is obtained by the steps of drying fresh artemisia carvifolia leaves in the shade, then crushing the leaves, adding ethanol to soak the crushed leaves overnight, performing ultrasonic assistant extraction, then performing liquid-solid separation, and reducing the pressure to remove a solvent of a liquid phase part through volatilization. An OP-10 type emulsifying agent is added into the artemisia carvifolia extract, the components are uniformly mixed, then the mixture is dissolved by using ethanol to prepare an artemisia carvifolia extract solution, and after being diluted by adding water, the artemisia carvifolia extract solution can be sprayed on tobacco leaf surfaces to control the tobacco thrips. The artemisia carvifolia extract has a strong killing effect on the tobacco thrips, is high in activity and quick in effect, and has a good control effect on the tobacco thrips, so that a new way of controlling the tobacco thrips is provided.

Description

technical field [0001] The invention belongs to the technical field of tobacco pest control and relates to the control of thrips tabaci, in particular to the new application of Artemisia annua extract in the control of thrips tabaci. Background technique [0002] Thrips tabaci is one of the important pests of tobacco, which mainly occurs and harms tobacco at the seedling stage. Thrips tabaci has a wide range of hosts, miscellaneous feeding habits, and a wide range of host plants, including a variety of important economic crops such as vegetables and flowers. The long-distance spread is mainly caused by human factors. After spreading to a different place, as long as the growth environment is suitable, it can spread rapidly in the invaded place and cause losses to crops. At present, chemical pesticides are mainly used in the prevention and control of thrips tabaci, which have a prominent negative impact on the quality of tobacco leaves and the environment. [0003] Artemisia...

Claims

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Application Information

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IPC IPC(8): A01N65/12A01P7/04
Inventor 刘娟王明锋杨根华叶敏
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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