Pesticide synergistic agent and preparation method thereof

A synergist and pesticide technology, which is applied in the field of pesticide synergist containing plant saponin and silicone surfactant and its preparation, can solve the problems of high cost and inconspicuous penetration effect, and achieve the reduction of use cost and increase Surface active, guaranteed effect

Inactive Publication Date: 2009-12-02
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a pesticide with low production cost and good penetration effect on plant or insect epidermis, aiming at the inconspicuous penetration effect and high cost of plant saponin and organic silicon surfactant single agent. Synergistic effect is obvious, and the new kind of pesticide synergist that is friendly to the environment; Another purpose of the present invention is to propose the preparation method of this pesticide synergist

Method used

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  • Pesticide synergistic agent and preparation method thereof
  • Pesticide synergistic agent and preparation method thereof
  • Pesticide synergistic agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] (1) Preparation of plant saponin: take tea seed cake, Sapindus fruit peel and saponins fruit pod as raw materials, dry and pulverize respectively, use 45% ethanol aqueous solution as extraction solvent, and extract under reflux at 50°C 8 hours; the extract was concentrated under reduced pressure until no ethanol was evaporated, then extracted 3 times with n-butanol, the extracts were combined, concentrated under reduced pressure to dryness, recovered n-butanol, and measured by UV-Vis spectrophotometry, That is, tea saponin, sapindus saponin and saponin saponin products with a triterpene glycoside saponin content of more than 20% are respectively prepared for future use;

[0030] (2) Silicone surfactant: a commercially available product (polysiloxane-polyoxyalkylene ether, content ≥ 98%)

[0031] (3) Take by weighing 30 grams of tea saponin prepared in step (1), 15 grams of sapindus saponin, 10 grams of saponin, and take by weighing 15 grams of organic silicon surfactant...

Embodiment 2

[0033] In this example, tea seed cake was used as raw material, and extracted under reflux for 7 hours at 55°C; 50 grams of tea saponin, 25 grams of silicone surfactant, and 25 grams of water were weighed respectively to make a pesticide synergist product Two, all the other steps, technology are the same as embodiment 1.

Embodiment 3

[0035] In this example, tea seed cake was used as raw material, refluxed and extracted at 60°C for 6 hours; 10 grams of tea saponin, 80 grams of silicone surfactant, and 10 grams of ethanol were weighed respectively to make a pesticide synergist product Three, all the other steps, technology are the same as embodiment 1.

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Abstract

The invention discloses a pesticide synergistic agent and a preparation method thereof, which belong to the technical field of pesticide preparation. The pesticide synergistic agent comprises the following components in percentage by weight: 5 to 70 percent of plant saponin, 5 to 80 percent of organosilicon surfactant of polysiloxane and polyoxyethylene ether, and the balance of a solvent. The pesticide synergistic agent is prepared by using tea seed cake dreg, soapberry peel or honeylocust fruit pod as raw materials and is prepared from the steps of (1) preparing the plant saponin, (2) preparing the materials for the pesticide synergistic agent and mixing the materials and the like. The pesticide synergistic agent uses the respective advantage and the mutual synergized actions of the plant saponin and the organosilicon surfactant, so that the surface active tension of the pesticide synergistic agent is obviously improved, the synergized action to a pesticide is remarkably improved, and the use cost is reduced by 20 to 60 percent compared with that of the single organosilicon surfactant. The pesticide synergistic agent and the method can be popularized and applied in peasant households or pesticide manufacturing enterprises.

Description

technical field [0001] The invention relates to the technical field of pesticide preparation, in particular to a pesticide synergist containing plant saponin and organic silicon surfactant and a preparation method thereof. Background technique [0002] Pesticides are chemicals that must be used in the production of crops, fruits and vegetables, and are used to kill various pests, germs and weeds. Since most of the current pesticides are oil-soluble and not easily soluble in water, various surfactants must be used to emulsify them into oil-in-water emulsions so that they can be easily adsorbed to the surface of plants and give full play to their efficacy. However, since the surfaces of plant leaves, stems, and stems are covered with a thin hydrophobic wax film, after the pesticide emulsion emulsified with general surfactants is sprayed on the leaves, stems, and stems of plants, its wetting speed is slow and spreading The area is small, and some even drop directly to the grou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/30A01N43/16
Inventor 陈列忠王莉陈建明张珏锋何月平
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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