Application of yellowtop extract in weedicide

A technology for extracts of A. japonica, applied in the directions of herbicides and algaecides, applications, biocides, etc., can solve the problem of not finding an extract of A. japonicus, and achieve the effects of good medicinal prospects and obvious herbicidal effects.

Inactive Publication Date: 2008-02-13
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The roots, stems, leaves, flowers and seeds of the chrysanthemum after fully drying and removing impurities are pulverized with a pulverizer and passed through a 40-mesh sieve. Weigh 2 kg of the crushed and sieved sample, add 6 kg of acetone, extract at room temperature for 12 hours, then put it into a microwave oven for 5 times, each time for 30 seconds, then process it on an ultrasonic cleaner for 5 minutes, and filter under reduced pressure to obtain Acetone extract of chrysanthemum chrysanthemum. The acetone extract of Chrysanthemum chrysanthemum is concentrated under reduced pressure to near dryness at 40° C. to obtain the extract of Chrysanthemum chrysanthemum. Weigh 10 g of the acetone extract of the chrysanthemum chrysanthemum in a watch glass to fully volatilize the acetone, and fully dissolve it with 100 mL of methanol to obtain a methanol solution of the chrysanthemum chrysanthemum extract.

Embodiment 2

[0026] The roots, stems, leaves, flowers and seeds of the chrysanthemum after fully drying and removing impurities are pulverized with a pulverizer and passed through a 40-mesh sieve. Weigh 5 kg of the crushed and sieved sample, add acetone: petroleum ether=1: 2 (V / V) mixed solvent 25 kg, extract at room temperature for 18 hours, then process it on an ultrasonic cleaning machine for 5 minutes, and filter under reduced pressure The acetone and petroleum ether mixed solvent extract of the chrysanthemum was obtained. The extract of Chrysanthemum chrysanthemum is concentrated under reduced pressure to nearly dryness at 40° C. to obtain the extract of Chrysanthemum chrysanthemum.

Embodiment 3

[0028] Take by weighing the extract 90g of Chrysanthemum chrysanthemum, fully dissolve with 165g xylene earlier, then add No. 500 Nongru: Tween-80=1: 2 (weight ratio) mixed emulsifier 45g, fully stir to get Chrysanthemum chrysanthemum extract weeding agent cream. No. 500 described agricultural milk is calcium dodecylbenzenesulfonate, and its molecular structural formula is as follows:

[0029]

[0030] Nongru No. 500

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

[0032]

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Abstract

The invention relates to a new application of the extract of chrysanthemum chrysanthemum in the field of herbicides. The herbicide EC made by using this product is diluted with water and then sprayed, which is effective against crabgrass (Digitaria sanguinalis L.), retroflexus amaranthus (Amaranthus retroflexus L.), barnyardgrass (Echinochloa crus-galli L.), Chenopodium album L. ) and other weeds have a good control effect. The application of the chrysanthemum chrysanthemum extract in herbicides of the present invention turns waste into treasures of alien invasive species that would have cost a lot of manpower and material resources to remove, and finds out a new way of effective utilization. By passively removing chrysanthemum chrysanthemum, it becomes It has become a reasonable control and development and utilization.

Description

technical field [0001] The present invention relates to the use of the extract of chrysanthemum chrysanthemum, especially the use in the field of herbicides. Background technique [0002] Flaveria bidentis (L.) Kuntze belongs to the genus Flaveria bidentis of the family Compositae, originated in South America, 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, Australia and Japan etc. After 2001, it appeared successively in Hengshui, Xingtai, Langfang and Tianjin, Hebei, my country. Chrysanthemum chrysanthemum is a 1-year herbaceous plant, the plant height varies greatly, the height can reach about 2 meters, the height is only about 10 centimeters, the corolla is bright yellow, eye-catching; the seeds are thin, the fruit is black, slightly flat, oblanceolate or nearly rod-shaped , without pappus, the inflorescence formation period is at the end of June, and the seed ...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01P13/00A01N65/12
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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