Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Application of asarum extract in preventing and controlling agricultural mites

A technology of two-spotted spider mites and extracts, applied in the application, acaricide, animal repellent and other directions, can solve the problems such as the use of Asarum extract that has not been found yet, achieve difficult drug resistance, expand the scope of application, and simple extraction easy effect

Inactive Publication Date: 2013-06-05
SHENYANG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of Asarum extract in the control of agricultural pests has not been found

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Application of asarum extract in preventing and controlling agricultural mites
  • Application of asarum extract in preventing and controlling agricultural mites

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0011] Experimental Example 1. Determination of Acaricidal Activity of Asarum Extract

[0012] The contact biological activity of Tetranychus urticae was determined by slide immersion method, a standard method recommended by FAO.

[0013] Experimental Materials:

[0014] Obtain the Herba Asarum extract of 95% ethanol as follows: 500 grams of dried Asarum herb are pulverized, passed through a 40 mesh sieve, extracted at room temperature with 5 times the amount of 95% ethanol for 4 days, and filtered to obtain the extract. Add 5 times the amount of 95% ethanol to the filter residue for leaching, and filter. After doing this three times, the three extracts were combined and concentrated under reduced pressure to obtain the Asarum extract of the present invention with a yield of 3.65%. Then weigh 0.2g of the above Asarum extract, add 1% of the total volume of the extract in acetone to dissolve, stir with 0.5% Tween-80, mix well, dilute with distilled water, and make the concentr...

experiment example 2

[0021] Experimental example 2. Determination of ovicidal activity of Asarum extract

[0022] The preparation of the spider mites used in the experiment was the same as that in Experimental Example 1, and the experimental solution of asarum extract for killing adults in Experimental Example 1 was diluted 10 times for this experiment.

[0023] experimental method

[0024] Refer to the standard method of ovicide recommended by FAO—leaf residual poison method to measure the ovicidal biological activity of Tetranychus urticae with slight modifications. Collect fresh cowpea leaves, cut off the petiole by 0.2 cm, and wrap wet cotton balls on the petiole, put it in a petri dish with a layer of wet cotton, cover the both sides of the blade with wet cotton to make the blade close to the cotton, and use zero Pick up 20 female adult mites to each leaf with a No. 2 soft brush, place them at 25±1°C and allow them to lay eggs, remove the female adults after 24 hours, check and record the nu...

Embodiment 1

[0033] The preparation of embodiment 1 Asarum extract

[0034] Grind 500 grams of dried Asarum herb, pass through a 40-mesh sieve, extract with 5 times the amount of 95% ethanol at room temperature for 5 days, and filter to obtain the extract. Add 5 times the amount of 95% ethanol to the filter residue for leaching, and filter. After doing this three times, the three extracts were combined and concentrated under reduced pressure to obtain the Asarum extract of the present invention with a yield of 3.65%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to application of an asarum extract in preventing and controlling two spotted spider mite. The asarum extract is prepared by the method comprising the following steps of: washing whole asarum herbs, drying in the shade, crushing by using a plant crusher, screening by using a 40-mesh sieve, adding 2-10 times of 95% ethanol, settling at room temperature, leaching for 1-7 days, stirring occasionally during leaching, and filtering to obtain a leach liquor; adding 2-10 times of 95% ethanol again into the filter residue, and extracting twice according to the above-mentioned method; and concentrating under reduced pressure by using a rotary evaporator to obtain the asarum extract. Various conventional auxiliary materials required by preparing different pesticide preparations can be added into the asarum extract, a pesticide missible oil solution can be prepared by using the conventional preparation process. Compared with chemically prepared pesticides, the asarum extract has the advantages of high effect, low residue and harmony with the environment and other living beings.

Description

technical field [0001] The invention relates to a plant extract, in particular to the use of an asarum extract in preventing and controlling agricultural pest mites. Background technique [0002] Herbivorous mites are the most common plant pests, which can seriously reduce the yield of many important economic crops, such as fruits, cotton, vegetables and ornamental plants, and are recognized as the most difficult pest community to control. Chemical pesticides have played an important role in controlling harmful mites in agricultural production, protecting crops from damage and ensuring agricultural economy. However, the long-term use of chemical pesticides has brought various disadvantages, such as excessive pesticide residues in agricultural products, and increased human and animal poisoning incidents. Pests have become resistant to pesticides, the number of natural enemies has plummeted, and the ecological balance has been disrupted. Therefore, the research and developmen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/08A01P7/02
Inventor 韩俊艳马德顺王军杨绍斌杨雪莲
Owner SHENYANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com