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Preparation method of botanical bactericidal composition for controlling bakanae diseases

A composition and plant-derived technology, applied in the field of preparation of plant-derived fungicidal compositions, can solve the problems of increased resistance to rice bakanae disease, increased application rate, and inability to prevent and control diseases, and achieve good preventive and therapeutic effects, Increase disease resistance and stress resistance, reduce pollution and the effect of human health hazards

Inactive Publication Date: 2019-07-12
江西鑫邦科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although chemical agents play an important role in the prevention and control of bakanae disease, long-term continuous use has greatly enhanced the resistance of rice bakanae disease in most areas. Single or dual chemical pesticides can no longer control the disease, and the amount of application is doubled. increased, putting enormous pressure on the environment and human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A botanical fungicidal composition for preventing and treating bakanae disease, comprising composition A and composition B, said composition A is Houttuynia cordata extract, Limegrass extract and Comfrey extract according to the mass ratio of Houttuynia cordata Extract: Chickweed extract: Comfrey extract = 1:1:1 ratio mixing, the composition B is 22,23,24-epibrassinolide.

[0023] The preparation method of the above-mentioned botanical fungicidal composition of the present embodiment comprises the following steps:

[0024] (1) Preparation of Houttuynia cordata extract: Mince fresh Houttuynia cordata and extract with distilled water at 80-90°C for 10 hours. The liquid phase is collected by filtration to obtain the Houttuynia cordata extract;

[0025] (2) Preparation of chrysanthemum extract: chop fresh chrysanthemum, extract with potassium citrate and malic acid aqueous solution at 60-70°C for 6 hours, the quality of potassium citrate and malic acid aqueous solution is ...

Embodiment 2

[0038] A botanical fungicidal composition for preventing and treating bakanae disease, comprising composition A and composition B, said composition A is Houttuynia cordata extract, Limegrass extract and Comfrey extract according to the mass ratio of Houttuynia cordata Extract: Chickweed extract: Comfrey extract = 1:1.5:1.5, the composition B is 28-homobrasinolide.

[0039] The preparation method of the above-mentioned botanical fungicidal composition of the present embodiment comprises the following steps:

[0040] (1) Preparation of Houttuynia cordata extract: Mince fresh Houttuynia cordata and extract with distilled water at 80-90°C for 10 hours. The liquid phase is collected by filtration to obtain the Houttuynia cordata extract;

[0041] (2) Preparation of chrysanthemum extract: chop fresh chrysanthemum, extract with potassium citrate and malic acid aqueous solution at 60-70°C for 6 hours, the quality of potassium citrate and malic acid aqueous solution is less than 4 ti...

Embodiment 3

[0054] A botanical fungicidal composition for preventing and treating bakanae disease, comprising composition A and composition B, said composition A is Houttuynia cordata extract, Limegrass extract and Comfrey extract according to the mass ratio of Houttuynia cordata Extract: Chickweed extract: Comfrey extract = 1:2:2 ratio mixing, the composition B is propionylbrassinolide.

[0055] The preparation method of the above-mentioned botanical fungicidal composition of the present embodiment comprises the following steps:

[0056] (1) Preparation of Houttuynia cordata extract: Mince fresh Houttuynia cordata and extract with distilled water at 80-90°C for 10 hours. The liquid phase is collected by filtration to obtain the Houttuynia cordata extract;

[0057] (2) Preparation of chrysanthemum extract: chop fresh chrysanthemum, extract with potassium citrate and malic acid aqueous solution at 60-70°C for 6 hours, the quality of potassium citrate and malic acid aqueous solution is les...

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Abstract

The invention discloses a botanical bactericidal composition for controlling bakanae diseases. The botanical bactericidal composition for controlling bakanae diseases comprises a composition A and a composition B, wherein the composition A is a mixture of Houttuynia cordata extract, Corydalis bungeana extract and Lithospermum erythrorhizon extract, the composition B is a brassinolide compound, andthe botanical bactericidal composition can further comprise one or more of iodopropynyl butylcarbamate, dichloroacetyl trichlamide and sodium pyrithione. Compounding of the botanical components is adopted, an obvious bactericidal effect is achieved, the use amount of chemical reagents is reduced, and pollution to the environment and harm to the human health are reduced.

Description

technical field [0001] The invention belongs to the technical field of plant disease prevention and control, and in particular relates to a preparation method of a botanical fungicidal composition for preventing and treating bakanae disease. Background technique [0002] Rice bakanae disease, also known as rice excessive growth disease, occurs in every rice area in China. Generally, the rate of diseased plants in the diseased field is below 3%, and the rate of diseased plants in a few fields with severe disease can reach more than 40%, and the yield reduction rate can reach 10% to 40%. The diseased plants at the seedling stage are mostly slender, thin, elongated leaf sheaths, nearly 1 / 3 taller than healthy plants, light in color, narrow leaves, and a few diseased plants are shorter than healthy plants. Most of the diseased plants withered at the seedling stage, and a small number of diseased plants withered within 25 days after transplanting. It occurs in rice from the see...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01N43/22A01N43/40A01N37/40A01N47/12A01P3/00
CPCA01N37/40A01N43/22A01N43/40A01N47/12A01N65/00A01N65/08
Inventor 李志江林建海楚娟娟
Owner 江西鑫邦科技有限责任公司
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