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Application of artemisia annua extract to control of tobacco aphids

A technology of tobacco aphids and extracts, applied in the application, insecticide, animal repellent and other directions, can solve the problems of few artemisia annua, no successful reports, etc., and achieves high activity, good control effect and rapid effect Effect

Inactive Publication Date: 2014-02-26
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 in the control of tobacco aphids has not yet been successfully reported.

Method used

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  • Application of artemisia annua extract to control of tobacco aphids
  • Application of artemisia annua extract to control of tobacco aphids
  • Application of artemisia annua extract to control of tobacco aphids

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 aphids, 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 tobacco aphids Prevention and treatment. 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.

[0021] Table 2. The control effect of 10% Artemisia annua ethanol extract extract solution on tobacco aphids

[0022]

Embodiment 3

[0024] Add the OP-10 type 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 tobacco aphids Prevention and treatment. 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.

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

[0026]

[0027]

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PUM

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Abstract

The invention discloses new application of plant artemisia annua, namely application of an artemisia annua extract to control of tobacco aphids. The application comprises the following steps: crushing fresh artemisia annua leaves after being dried in the shade, soaking by alcohol and staying overnight, carrying out liquid-solid separation after auxiliary extraction of ultrasonic waves, decompressing and evaporating a solvent of a liquid phase part to obtain the artemisia annua extract; and adding an OP-10 (sodium dodecyl sulfate and polyoxyethylene nonyl phenyl ether) type emulsifying agent, uniformly mixing, then dissolving by using alcohol to prepare an artemisia annua extract solution, and blending water for diluting to spray leaves of tobacco to control tobacco aphids. The artemisia annua extract plays a strong killing role for the tobacco aphids, is high in activity, high in acting speed and good in control effect to the tobacco aphids, and provides a novel approach to the control of the tobacco aphids.

Description

technical field [0001] The invention belongs to the technical field of tobacco pest control, and relates to the control of tobacco aphids, in particular to the new application of Artemisia annua extracts in the control of tobacco aphids. Background technique [0002] Tobacco aphid is one of the important pests of tobacco, which occurs and harms tobacco in different degrees from seedling stage to harvest stage. Tobacco aphids not only directly feed on the juice of tobacco plants and cause direct harm, but also spread tobacco mosaic virus, which makes tobacco mosaic virus popular in a large area, seriously affects the yield and quality of tobacco leaves, and has a great impact on the sustainable development of tobacco. At present, chemical pesticides are mainly used in the control of tobacco aphids, which have a prominent negative impact on the quality of tobacco leaves and the environment. [0003] Artemisia carvifolia (Artemisia carvifolia) is an annual herb of Compositae n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01P7/04
Inventor 何靓王明锋杨根华叶敏
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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