Yellowtop extract weedicide emulsion and preparation technology thereof

A preparation process, the technology of chrysanthemum chrysanthemum, applied in the direction of herbicide, algicide, biocide, animal repellent, etc., to achieve good control effect

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

AI Technical Summary

Problems solved by technology

Through the search, there is no relevant literature report on the use of chrysanthemum extract as herbicide emulsifiable concentrate

Method used

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  • Yellowtop extract weedicide emulsion and preparation technology thereof
  • Yellowtop extract weedicide emulsion and preparation technology thereof
  • Yellowtop extract weedicide emulsion and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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 2 kg of the crushed and sieved sample, add 6 kg of acetone, and extract at room temperature for 12 hours, then process it with 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 Chrysanthemum chrysanthemum acetone extract. The acetone extract of Chrysanthemum chrysanthemum is concentrated under reduced pressure to near dryness at 40° C. to obtain the extract of Chrysanthemum chrysanthemum. After the acetone extract of the obtained chrysanthemum acetone is fully volatilized in a watch glass, two parts of 10g samples are weighed respectively, one part is used to be processed into 5% herbicide emulsifiable concentrate; the other part is fully dissolved with 100mL methanol to obtain Methano...

Embodiment 2

[0030] Embodiment 2: the preparation of chrysanthemum extract emulsifiable concentrate

[0031] The roots, stems, leaves and seeds of Chrysanthemum 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. The method for processing into herbicide emulsifiable concentrate is: the extract of 100g of chrysanthemum chrysanthemum is fully dissolved with 80g xylene earlier, then adds No. 500 agricultural milk: Tween-80=1: 3 ...

Embodiment 3

[0034] Embodiment 3: Chrysanthemum chrysanthemum extract herbicide emulsifiable concentrate

[0035] 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: methanol=1: 1~3 (V / V) mixed solvent 15 kg, extract at room temperature for 12 hours, then process 5 times with a microwave oven, each time for 30 seconds , and then processed on an ultrasonic cleaning machine for 5 minutes, and filtered under reduced pressure to obtain the acetone and methanol extract of Chrysanthemum chrysanthemum. The acetone-methanol mixed solvent extract of the chrysanthemum chrysanthemum is concentrated under reduced pressure to nearly dryness at 40° C. to obtain the chrysanthemum chrysanthemum extract. Take by weighing the extract 90g of chrysanthemum chrysanthemum, fully dissolve with 165g xylene earlier, then add No. 500 ...

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Abstract

The invention discloses a herbicide emulsifiable concentrate extracted from chrysanthemum chrysanthemum, which is characterized in that the weight percentage of each component of the chrysanthemum chrysanthemum extract is 5%-50% of chrysanthemum chrysanthemum extract, 10%-20% of pesticide adjuvant, and 30% of solvent ~85%, the pesticide adjuvant is: Nongru No. 500: a mixed emulsifier of Tween-80=1: 1~3 (weight ratio); said Nongru No. 500 is calcium dodecylbenzenesulfonate, Tween -80 is ethylene oxide adduct of sorbitan monooleate; solvent: xylene. The invention also discloses a preparation process of the herbicide emulsifiable concentrate extracted from the chrysanthemum chrysanthemum. The herbicide emulsifiable concentrate has a good control effect on weeds such as crabgrass, retroverted amaranthus, barnyardgrass, and quinoa. In the case of the same control effect on the four tested weeds, the dosage of the extract of the chrysanthemum was 40-50 times lower than that without processing.

Description

technical field [0001] The invention relates to a process for preparing a herbicide by using the extract of chrysanthemum chrysanthemum as a raw material. The invention also relates to the formulation of the herbicide emulsifiable concentrate of the chrysanthemum chrysanthemum extract. 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 cities such as Hengshui, Xingtai, Langfang and Tianjin in Hebei Province, my country. Chrysanthemum chrysanthemum is a 1-year herbaceous plant, the height of the plant varies greatly, the height can reach about 2 meters, the height is only about 10 cm, the corolla is bright yellow, eye-catching; the seeds are black, slig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01P13/00A01N25/30A01N25/04A01N65/12
Inventor 张金林刘颖超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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