Preparation method of plant-source pesticide

A technology of botanical insecticides and insecticides, applied in botany equipment and methods, insecticides, plant growth regulators, etc., can solve the problems of rampant pests, decline in control effects, and pesticide pollution, etc. Achieve the effects of expanding the insecticidal spectrum, short duration, and long time to overcome

Inactive Publication Date: 2012-06-27
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resistance of pest populations increases, the control effect declines, and a large number of natural enemies are killed, causing the p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of botanical insecticide, comprising the following steps:

[0025] 1) Prepare Ailanthus ailanthii leaf extract, oleander leaf extract and castor bean extract respectively, the specific operations are as follows:

[0026] Preparation of Ailanthus Ailanthus Leaf Extract:

[0027] Take Ailanthus leaf powder, wrap it with filter paper, put it into a Soxhlet extractor, add ethanol with a mass concentration of 95% according to the ratio of 10mL ethanol per gram of Ailanthus leaf powder, and extract until the extract is colorless, and then extract the extract Merge and concentrate to 1 / 5 of the original volume to obtain a paste; then add an equal volume of 80°C distilled water to the paste, filter while hot to obtain the filtrate and paste, collect the filtrate, and Add an equal volume of distilled water at 80°C, filter, collect the filtrate and repeat the above water addition and filtration operations until the filtrate has no dark green substances; Lea...

Embodiment 2

[0037] The preparation methods of Ailanthi sinensis leaf extract, oleander leaf extract and castor bean extract are as described in Example 1.

[0038] Get 8g of Ailanthus ailanthii leaf extract, 8g of oleander leaf extract and 10g of castor bean extract and mix them well, then add Tween-80 100mL, then add distilled water to make it 1000mL, mix evenly to obtain Insecticide products.

Embodiment 3

[0040] The preparation methods of Ailanthi sinensis leaf extract, oleander leaf extract and castor bean extract are as described in Example 1.

[0041] Get 15g of the obtained Ailanthus ailanthus leaf extract, 15g of oleander leaf extract and 7g of castor bean extract, mix them well, then add Tween-80 150mL, then add distilled water to set the volume to 1000mL, mix evenly to obtain Insecticide products.

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PUM

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Abstract

A preparation method of a plant-source pesticide comprises the following steps of: firstly extracting effective components from Ailanthus altissima leaves, Nerium indicum leaves and Momordica charantial respectively, mixing the three effective components according to a certain ratio, adding tween-80 and distilled water, and uniformly stirring to prepare the plant-source pesticide. The plant-source pesticide is prepared from the three plant extract products which have rich sources. By the full utilization of mixed synergistic effects of different active substances, defects of a single pesticide such as long development time, high cost, high cost, large amount and drug resistance of insect pests due to long-term usage are overcome. The pesticide prepared in the invention requires low cost and few amount, and can raise drug effects and enlarge insecticidal spectrum. In addition, by the adoption of the pesticide provided by the invention, it is difficult for insects to get drug-resistant.

Description

technical field [0001] The invention relates to a preparation method of an insecticide, in particular to a preparation method of a botanical insecticide. Background technique [0002] In recent years, due to the simple and large-scale application of chemical pesticides to control pests in my country, various adverse consequences have been caused. The resistance of pest populations has increased, the control effect has declined, and a large number of natural enemies have been killed, causing the pests to become rampant again. The residues of pesticides have polluted the environment, and people have reconsidered the issue of control strategies. [0003] Botanical insecticides are substances that are produced in plants to extract and search for specific inhibitory effects on harmful organisms. These substances are produced by resisting insect herbivorous behavior during the long-term co-evolution of plants and insects. They have contact killing, Stomach poisoning, avoidance, a...

Claims

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Application Information

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IPC IPC(8): A01N65/26A01N65/18A01N65/08A01P7/04
Inventor 张延萍李军梁菊王新胜牛睿祺
Owner HENAN UNIV OF SCI & TECH
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