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A water emulsion of cocklebur seed extract and its application in the control of tea green leafhopper

A kind of technology of tea green leafhopper and cocklebur, which is applied in the field of pesticides to achieve the effects of rapid action, widening application range and high activity

Active Publication Date: 2018-03-06
安徽省科学技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there are few studies on the use of Xanthium in the control of agricultural pests, especially the use of Xanthium for the effective control of tea leafhoppers has not yet been reported.

Method used

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  • A water emulsion of cocklebur seed extract and its application in the control of tea green leafhopper
  • A water emulsion of cocklebur seed extract and its application in the control of tea green leafhopper

Examples

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Effect test

Embodiment 1

[0026] The present embodiment first prepares the ethanol extract of Fructus Xanthii according to the following steps:

[0027] After pre-treatments such as removing impurities, washing with sterile water, and drying in the shade indoors, dry Xanthium at 50°C for 2 hours until the moisture content is below 10%, then pulverize and pass through a 100-mesh sieve to obtain Xanthium dry powder; Add 95% ethanol according to the ratio of solid to liquid: 1g:5mL, extract with a Soxhlet extractor for 12 hours to obtain the initial extract; filter, concentrate under reduced pressure to evaporate the solvent in the liquid phase, and then dry to obtain the ethanol extraction of cocklebur thing.

[0028] In order to prove the control effect of Xanthium ethanol extract on tea green leafhopper, the following tests were carried out:

[0029] The insects used in this example, tea leafhoppers, were collected from tea gardens in Lingyang Town, Qingyang County, Anhui Province, where no pesticides...

Embodiment 2

[0037] The present embodiment first prepares the aqueous emulsion of Fructus Xanthium extract according to the following steps:

[0038] After pre-treatments such as removing impurities, washing with sterile water, and drying in the shade indoors, dry Xanthium at 50°C for 2 hours until the moisture content is below 10%, then pulverize and pass through a 100-mesh sieve to obtain Xanthium dry powder; Add 95% ethanol according to the ratio of material to liquid: 1g:5mL, and extract it with a Soxhlet extractor for 12 hours to obtain the initial extract; filter, concentrate under reduced pressure to evaporate the solvent in the liquid phase, and then dry to obtain the ethanol extraction of cocklebur thing.

[0039] The water emulsion of the cocklebur fruit extract is obtained by mixing 1% of the ethanol extract of the cocklebur fruit, 10% of the solvent ethanol, 1% of the emulsifier 2201 and water as the balance.

[0040] In order to prove the prevention and control effect of the ...

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Abstract

The invention discloses an aqueous emulsion of cocklebur fruit extract and its application in preventing and treating tea green leafhoppers. The aqueous emulsion is composed of the cocklebur fruit ethanol extract, ethanol, emulsifier 2201 and water mixed in proportion. The cocklebur ethanol extract of the invention has a strong insecticidal effect on the green leafhopper, has high activity and rapid action, and has a good control effect on the green leafhopper.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a new application of an ethanol extract of cocklebur seeds in preventing and controlling tea leafhoppers. Background technique [0002] Tea little green leafhopper (Empoasca pirisuga Matumura) belongs to Hemiptera, leafhopper family Cicadellidae, commonly known as floating dust, leaf collembola, etc. It has dozens of hosts and occurs widely. It is found in all tea-producing provinces and autonomous regions in the country. Occurs, mainly harms summer and autumn tea, and is one of the main pests in the main tea producing areas. The tea leafhopper has 9-11 generations in a year, mostly overwintering as adults on tea trees or winter crops (beans), weeds and other plants, and can survive the winter in various states in the south. When the temperature turns up in the early spring of the next year, the adults start to feed and supplement nutrition, and the tea trees start to lay eggs and repr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/12A01G13/00A01P7/04
Inventor 刘玉军吕杨陈龙胜许舒雯赵辉周海波
Owner 安徽省科学技术研究院
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