Broad-spectrum oligosaccharide compound bactericide and use thereof

A technology of compounding fungicides and compounding agents, applied in the direction of fungicides, applications, biocides, etc., to achieve the effect of simple and harmless operation process, solving food safety problems, and reducing usage

Active Publication Date: 2015-07-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combination of oligosaccharide biopesticide and chemical agent thiamethoxam as a new type of pesti

Method used

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  • Broad-spectrum oligosaccharide compound bactericide and use thereof
  • Broad-spectrum oligosaccharide compound bactericide and use thereof
  • Broad-spectrum oligosaccharide compound bactericide and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 Chitosan-oligosaccharide and thiamethoxam compound preparation inhibits apple rot pathogen

[0019] In this compound preparation, after mixing thiamethoxam and chitosan oligosaccharide according to the concentrations stated in Table 1, precipitation occurs, and 5% ammonia water is added until the precipitation dissolves to form a uniform solution.

[0020] After compounding 2.5% chitosan oligosaccharide and 0.5-2.0% thiamethoxam, the inhibitory effect on apple rot pathogens after dilution 1000 times is shown in Table 1. Synergistic effect, reducing the dosage of thiamethoxam in the compound preparation can achieve the effect of using thiamethoxam alone. The antibacterial test was carried out by the antibacterial circle method, and the relative antibacterial rate was calculated by measuring the size of the antibacterial circle.

[0021] Table 1 Inhibitory effect of chitosan oligosaccharide and thiamethonin compound on apple rot pathogen

[0022]

Embodiment 2

[0023] Example 2 Field efficacy of chitosan-oligosaccharide and thiamethoxam compound preparation on apple rot

[0024] 2.5% chitosan oligosaccharide and 2.0% thiamethoxam compound agent for the control of apple mosaic disease field efficacy test results show that the compound water agent diluted 1000 times, has a control effect on apple rot, up to 95.0%. The control effect is 88.3% higher than that of thiamethoxam alone.

[0025] Test site: Luochuan County, Shaanxi Province. The application method adopts the trunk smear method. Before applying the medicine, scrape the bark of the diseased part to the phloem with a knife, and fully apply the medicinal solution to the diseased scar, and at the same time, fully apply the medicinal solution within 2cm around the diseased scar.

[0026] Table 2 Control effect of chitosan oligosaccharide and thiamethoxam compound preparation on apple rot

[0027]

Embodiment 3

[0028] Example 3 Carrageenan oligosaccharides and thiamethoxamin compound preparation inhibiting effect on apple rot pathogen

[0029] In this compound, after mixing thiamethoxam and carrageenan oligosaccharide according to a certain ratio, precipitation occurs, and 0.2% sodium hydroxide is added until the precipitation dissolves to form a uniform solution.

[0030] Table 32.5% carrageenan oligosaccharides and 0.5-3.0% thiamethoxam compound 1000-fold dilution of the results of the inhibition of apple rot pathogens

[0031]

[0032]

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PUM

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Abstract

The invention relates to an oligosaccharide-containing compound bactericide. The used oligosaccharides comprise one or more of sodium alginate oligosaccharide and its derivatives, chitin oligosaccharide and its derivatives, and oligogalacturonic acid and its derivatives, and a broad-spectrum bactericide benziothiazolinone. Through mixing of the above materials according to different ratios, the soluble compound is obtained and has synergism of preventing and treating a plurality of bacterial diseases and fungous diseases such as cucumber downy mildew, pear scab, apple scab, apple rot, citrus anthracnose, citrus bacterial canker and anthracnose of grape. 2.5-10% of the oligosaccharide and its derivative, 0.5-4.0% of benziothiazolinone, and 5-10% of ammonium hydroxide as a cosolvent and 0.2-10% of sodium hydroxide as a cosolvent are mixed, and the mixture is diluted by 1000 times and has a bacteriostasis rate of 40-99%. The compound of the oligosaccharide and its derivative and the benziothiazolinone has the original characteristics of high efficiency, low toxicity and safety of a benziothiazolinone bactericide, contains oligosaccharide biological pesticide, reduces a chemosynthetic bactericide use amount, prevents or delays resistance to bactericide, improves crop defense response and yield, improves agricultural product quality, improves application safety and is an eco-friendly novel compound bactericide.

Description

technical field [0001] The invention relates to a compound preparation of oligosaccharides or oligosaccharide derivatives and fungicide thiametholone and its application in preventing and treating plant pathogenic bacteria. Background technique [0002] Agriculture is the foundation of human society and economic development. Plant disease is a major factor restricting the sustainable development of agriculture. Plant disease control plays an important role in sustainable agriculture. With the abuse of chemical agricultural preparations, plant pathogens gradually mutate and increase their drug resistance, making them more rampant. Finding safe, efficient and environmentally friendly new pesticides has become a top priority. [0003] Thiempyridone is an organic heterocyclic fungicide, which has a strong inhibitory effect on fungi and bacterial diseases. It has the characteristics of high efficiency, safety, low toxicity, and low residue. Elixir and easy to remove 1.6% thiame...

Claims

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Application Information

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IPC IPC(8): A01N43/80A01P3/00A01N43/16
Inventor 赵小明尹恒杜昱光王文霞刘启顺
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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