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Plant-sourced pesticide for preventing wheat powdery mildew and preparation method and application thereof

A technology for wheat powdery mildew and botanical pesticides, which is applied in the field of preparations in the technical field of agricultural fungicides, can solve problems such as formulation of no wheat powdery mildew, and achieve the effect of simple extraction process.

Inactive Publication Date: 2017-01-04
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it only does a simple extraction of plant materials, and there is no research on the preparation of wheat powdery mildew with synergists

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Pot experiment of preventing wheat powdery mildew

[0023] Weigh one or several mixtures of Chinese tallow tree, tung tree, abacus, autumn maple, Chongyang wood, Dijin grass, cassava plant pruning or naturally fallen branches, stems, leaves, flowers, and fruits, 50 ℃ Dried and ground into powder, a total of 100g (of which 10% Chinese tallow tree, 10% tung tree, 10% abacus, 30% autumn maple, 10% Chongyang wood, 20% Dijin grass, 10% cassava), in a glass jar Extract with 1L of 65% ethyl acetate in 3 times of sealing and soaking (0.5, 0.25, 0.25L), soak for 24 hours each time, filter and combine the filtrates. After concentrating under reduced pressure with a rotary evaporator at 50°C, the concentrated extract of the Euphorbiaceae plant was obtained. The preparation contains 15% of concentrated extract, 1% of anionic surfactant and water to make up to 100% of water, so as to obtain the botanical pesticide for preventing and treating wheat powdery mildew.

[0024] Using th...

Embodiment 2

[0026] Pot experiment of preventing wheat powdery mildew

[0027] Weigh one or several mixtures of Chinese tallow tree, poinsettia, tiger thorn, pruned or naturally fallen branches, stems, leaves, flowers and fruits from plants in cassava, poinsettia, tiger thorn, dried at 50°C, and ground into powder , a total of 100g (including 30% of Chinese tallow tree, 10% of poinsettia, 20% of tiger thorn, 30% of Dijincao, and 10% of cassava), dried at 50°C, ground into powder, and divided into 1L of 70% ethanol in a glass jar. Sealed and soaked for 3 extractions (0.5, 0.25, 0.25 L), soaked for 24 hours each time, filtered and combined the filtrates. After concentrating under reduced pressure with a rotary evaporator at 50°C, the concentrated extract of the Euphorbiaceae plant was obtained. The preparation contains 20% concentrated extract, 8% anionic surfactant and water to make up to 100% water formulation to obtain the botanical pesticide for preventing and treating wheat powdery mil...

Embodiment 3

[0030] Pot experiment on treating wheat powdery mildew

[0031] Weigh one or several mixtures of Chinese tallow tree, abacus, poinsettia, dijincao, and castor plant trimmed or naturally fallen branches, stems, leaves, flowers, and fruits, dry at 50°C, and grind into powder , a total of 100g (including 30% of Chinese tallow tree, 11% of abacus, 19% of poinsettia, 20% of Dijincao, and 20% of castor), in a glass jar, use 70% petroleum ether 1L to seal and soak for 3 times to extract (0.5, 0.25,0.25L), soak for 24 hours each time, filter and combine the filtrates. After concentrating under reduced pressure with a rotary evaporator at 50°C, the concentrated extract of the Euphorbiaceae plant was obtained. The preparation contains 45% concentrated extract, 20% Tween and water supplemented to 100% water formulation to obtain the botanical pesticide for preventing and treating wheat powdery mildew.

[0032] With the botanical pesticide for preventing and treating powdery mildew of t...

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Abstract

The invention provides a plant-sourced pesticide for preventing wheat powdery mildew and a preparation method and application thereof. The pesticide comprises Euphorbiaceae plant extract, a solubilizer and water, wherein the weight percent of each component is as follows: 15 to 45 percent of the Euphorbiaceae plant extract, 1 to 20 percent of solubilizer, and the balance of water; and the Euphorbiaceae plant extract is prepared by drying one of or a mixture of branches, stems, leaves, flowers and fruits of an Euphorbiaceae plant, grinding the mixture into powder, and extracting the mixture powder by adopting an organic solvent as an extraction solvent and by adopting a decompression concentration method. The plant-sourced pesticide has relatively high control effect for the wheat powdery mildew, can be directly used for preventing the wheat powdery mildew, and has characteristics of nuisancelessness, no pollution and no residue and can avoid the harm of chemical pesticides.

Description

technical field [0001] The present invention relates to a preparation in the technical field of agricultural fungicides, in particular to a botanical pesticide for preventing and treating wheat powdery mildew and its preparation method and application. Background technique [0002] Wheat is the general name of wheat plants, and it is a kind of gramineous plant widely planted all over the world. The caryopsis of wheat is one of the staple foods of human beings. After being ground into flour, it can be used to make bread, noodles and other foods; after fermentation, it can be made into beer , alcohol or biofuels. Wheat is rich in starch, protein, fat, minerals, calcium, iron, vitamin C, etc. There are 43 countries in the world, and 35%-40% of the population takes wheat as the main food. According to the statistics of the Food and Agriculture Organization of the United Nations in 2004, the harvested area of ​​wheat in the world is 3.236 billion mu (1 mu is about 667 square me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/18A01P3/00A01G13/00
CPCA01G13/00A01N65/00A01N65/18A01N2300/00
Inventor 代光辉郭松陈义娟刘艺刘佳张敏
Owner SHANGHAI JIAO TONG UNIV
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