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Application of yellowtop extract in weedicide

A technology of chrysanthemum chrysanthemum and extractant, which is applied in the direction of herbicide and algicide, application, biocide, etc., can solve the problem of undiscovered chrysanthemum chrysanthemum extract, and achieve good medicinal prospects and obvious herbicidal effect

Inactive Publication Date: 2010-06-23
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Through searching the relevant information, no relevant reports about the extract of chrysanthemum chrysanthemum as a herbicide were found

Method used

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  • Application of yellowtop extract in weedicide
  • Application of yellowtop extract in weedicide
  • Application of yellowtop extract in weedicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The roots, stems, leaves, flowers and seeds of the fully dried and de-impregnated A. chinensis were pulverized with a pulverizer and passed through a 40-mesh sieve. Weigh 2kg of the pulverized and sieved sample, add 6kg of acetone, leaching at room temperature for 12 hours, then put it into a microwave oven for 5 times for 30 seconds each time, then treat it on an ultrasonic cleaner for 5 minutes, and filter it under reduced pressure to obtain Acetone extract of A. chinensis. The acetone extract of A. japonica was concentrated under reduced pressure at 40° C. to dryness to obtain an extract of A. japonicus. After fully volatilizing the acetone extract of A. chinensis in a watch glass, weigh 10 g and fully dissolve it with 100 mL of methanol to obtain a methanol solution of the A. chinensis extract.

Embodiment 2

[0026] The roots, stems, leaves, flowers and seeds of the fully dried and de-impregnated A. chinensis were pulverized with a pulverizer and passed through a 40-mesh sieve. Weigh 5kg of the sample after crushing and sieving, add 25kg of mixed solvent of acetone: petroleum ether=1:2 (V / V), leaching under room temperature for 18 hours, then process it on an ultrasonic cleaner for 5 minutes, filter under reduced pressure The acetone and petroleum ether mixed solvent extracts of Flavus officinalis were obtained. The extract of A. japonica was concentrated under reduced pressure at 40° C. to dryness to obtain an extract of A. japonicus.

Embodiment 3

[0028] Weigh 90g of the extract of A. japonica, first fully dissolve it with 165g of xylene, then add 45g of a mixed emulsifier of No. 500 Nongru: Tween-80=1:2 (weight ratio), stir well to get A. japonicus extract for weeding emulsifiable concentrate. Described Nongru No. 500 is calcium dodecylbenzenesulfonate, and its molecular structural formula is as follows:

[0029]

[0030] Nongru No. 500

[0031] Tween-80 is sorbitan monooleate ethylene oxide adduct, and its molecular structure is as follows:

[0032]

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Abstract

The present invention relates to a new method of the Flaueriinae bidentis (L.) Kuntze extract applied to the weedicide field. The weedicide emulsifying concentrate made of the Flaueriinae bidentis (L.) Kuntze extract is sprayed after diluted by the water, which has a favorable prevention effect on the weeds such as the Digitaria sanguinalis L., the Amaranthus retroflexus L., the Echinochloa crus-galli L. and the Chenopodium album L.. The Flaueriinae bidentis (L.) Kuntze extract of the present invention is used as the weedicide, which changes the waste to be a treasure by finding an effective use method for the foreign infringed substance that takes huge labor force and huge material resource for removal; which converts the passive removal of the Flaueriinae bidentis (L.) Kuntze into the reasonable control and development.

Description

technical field [0001] The present invention relates to the use of Flavix chinensis extract, in particular to the use in the field of herbicides. Background technique [0002] Flaveria bidentis (L.) Kuntze is a genus of Asteraceae, which originated in South America and is mainly distributed in the West Indies, Mexico and the southern part of the United States, and later spread to Egypt, South Africa, the United Kingdom, France, and Australia. and Japan etc. After 2001, it appeared in Hengshui, Xingtai, Langfang and Tianjin in Hebei Province. Yellow top chrysanthemum is an annual herb, the height of the plant varies greatly, the height can reach about 2 meters, the low is only about 10 cm, the corolla is bright yellow, eye-catching; the seeds are thin, the fruit is black, slightly flat, oblanceolate or nearly rod-shaped , no crested, the inflorescence formation period is at the end of June, and the seed maturity period is from the beginning of September to the middle of Nov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/12A01P13/00
Inventor 刘颖超张金林庞民好赤国彤李川张利辉张凤国康占海
Owner HEBEI AGRICULTURAL UNIV.
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