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Application of sweet wormwood extraction in prevention and control of oriental tobacco budworm

A technology of extract and budworm, which is applied in application, insecticide, animal repellent, etc., can solve the problems of no successful reports and few Artemisia annua, and achieve good control effect, high activity and strong killing effect. The effect of insect action

Inactive Publication Date: 2014-03-19
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 P. tabaci has not yet been successfully reported.

Method used

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  • Application of sweet wormwood extraction in prevention and control of oriental tobacco budworm
  • Application of sweet wormwood extraction in prevention and control of oriental tobacco budworm
  • Application of sweet wormwood extraction in prevention and control of oriental tobacco budworm

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 P. tabaci, and its control effect is equivalent to 5% natural pyret...

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 Pediatricia tabaci 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. The details are shown in Table 2.

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

[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 P. tabaci 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. The details are shown in Table 3.

[0025] Table 3. The control effect of 20% Artemisia annua ethanol extract extract solution on tobacco budworm

[0026]

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Abstract

The invention discloses an application of plant sweet wormwood, which relates to an application of sweet wormwood extraction in prevention and control of oriental tobacco budworm. A method is characterized in that sweet wormwood fresh leaves can be taken, dried in the shade and then crushed, ethanol is added for immersing overnight, supersonic wave is used for extraction in an auxiliary mode, then liquid-solid separation is carried out, and pressure reduction is performed to remove a solvent of liquid phase part to obtain the sweet wormwood extraction. The application is characterized in that an OP-10 type emulsifier is uniformly mixed, then ethanol is used for dissolving to prepare a sweet wormwood extraction solution, and water is added for diluting to spray on the tobacco leaves to prevent and control the oriental tobacco budworm. The sweet wormwood extraction has strong killing effect on oriental tobacco budworm, and has the advantages of high activity, rapid effect, and good prevention and control effect on the oriental tobacco budworm, and the sweet wormwood extraction provides a new approach for preventing and controlling the oriental tobacco budworm.

Description

technical field [0001] The invention belongs to the technical field of tobacco pest prevention and control, and relates to the prevention and treatment of the tobacco budworm, in particular to the new application of the extract of Artemisia annua in the prevention and treatment of the tobacco budworm. Background technique [0002] Tobacco budworm is one of the important pests of tobacco, which mainly occurs and harms tobacco seedlings. Tobacco budworm, also known as tobacco budworm, has a wide range of distribution and occurs in most areas. In addition to harming tobacco, budworm also harms crops such as peppers and tomatoes. Tobacco budworm larvae often harm the buds, flowers and fruits of tobacco plants, affecting the yield and quality of tobacco. At present, chemical pesticides are mainly used to control tobacco budworm, which have a prominent negative impact on tobacco leaf quality and the environment. [0003] Artemisia carvifolia (Artemisia carvifolia) is an annual ...

Claims

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Application Information

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