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Pyridine heterocyclic quaternary ammonium salt cationic surfactant agricultural bactericide

A technology of quaternary ammonium salt cations and surfactants, which is applied in the field of pyridine heterocyclic quaternary ammonium salt cationic surfactants, agricultural fungicides, and fungicidal active compounds. Good performance, simple preparation process, and small residue

Inactive Publication Date: 2017-12-01
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Quaternary ammonium cationic surfactants have the characteristics of low toxicity to humans and animals, low irritation, strong penetration, and easy biodegradation. However, there are few reports on the application of quaternary ammonium cationic surfactants in the field of pesticides to prevent and control plant diseases. In agriculture, it is only used in the research of herbicide auxiliaries. In addition, it is used as an industrial bactericide and algicide and a disinfectant for agricultural livestock and poultry breeding sites.

Method used

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  • Pyridine heterocyclic quaternary ammonium salt cationic surfactant agricultural bactericide
  • Pyridine heterocyclic quaternary ammonium salt cationic surfactant agricultural bactericide
  • Pyridine heterocyclic quaternary ammonium salt cationic surfactant agricultural bactericide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1. Experimental materials

[0014] N-(pyridinecarbamoylmethyl)-N,N-dimethyl-N-dodecylammonium chloride is a compound made in the laboratory, and its structural formula is as follows.

[0015]

[0016] Weigh 0.8 mg of N-(pyridylcarbamoylmethyl)-N,N-dimethyl-N-dodecyl chloride and dissolve it in 10 mL of deionized water to prepare a mother solution of 80 μg / mL, and then dilute to Concentrations of 40 μg / mL, 20 μg / mL, 10 μg / mL, and 5 μg / mL mother solutions were sterilized by filtration and stored at 4°C until use. The phytopathogenic bacteria used in this experiment were strains stored at 4°C in the laboratory, and the medium used was potato medium (PDA).

[0017] Medium formula: 200 g peeled potatoes, 20 g glucose, 15 g agar, 1000 mL tap water, natural pH.

[0018] Preparation method: wash and peel the potatoes, weigh 200 g, cut into small pieces, add water and boil until rotten (boil for 20-30 minutes, it can be pierced by a glass rod), filter it in a beaker with ei...

Embodiment 2

[0047] The N-(pyridinecarbamoylmethyl)-N,N-dimethyl-N-dodecyl ammonium chloride bactericide toxicity regression equation of preparing by embodiment 1 is measured:

[0048] The pathogenic bacteria of rice sheath blight, tomato Botrytis cinerea and apple rot pathogen with high inhibition rate of N-(pyridinecarbamoylmethyl)-N,N-dimethyl-N-dodecylammonium chloride were selected as Test strains.

[0049] The virulence of three kinds of plant pathogenic bacteria was determined by mycelium growth rate method. The specific method refers to Example 1, establishes the virulence regression equation according to the inhibition rate of each concentration, and calculates its theoretical MIC value to four kinds of pathogenic bacteria according to the virulence regression equation, and then uses the theoretical MIC value as the initial concentration to carry out N-(pyridinecarbamoylmethyl)-N,N-dimethyl-N-dodecylammonium chloride was prepared by equal concentration gradient expansion, and ant...

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Abstract

The invention discloses a pyridine heterocyclic quaternary ammonium salt cationic surfactant agricultural bactericide, and the name of the agricultural bactericide is N-(pyridylaminoformylmethyl)-N,N-dimethyl-N-dodecylammonium chloride. The agricultural bactericide aims to solve problems that a chemical bactericide is high in residues and large in usage amount, pollutes environments and the like. The agricultural bactericide has the advantages of good water solubility, small toxicity, high penetrability, easy degradation, an extremely low usage amount and the like, and the agricultural bactericide is safe to non-target organisms and people and livestock. According to the invention, experiments prove that the N-(pyridylaminoformylmethyl)-N,N-dimethyl-N-dodecylammonium chloride can be used to inhibit rice sheath blight pathogenic bacteria, watermelon fusarium wilt pathogenic bacteria, apple canker pathogenic bacteria, tomato grey mould pathogenic bacteria, cucumber fusarium wilt pathogenic bacteria and corn southern leaf blight pathogenic bacteria, and inhibitory concentrations are 20-80 mu g / mL. The bactericide is small in residual amount and easy to remove by water, can guarantee the yield of agricultural products, fruit and vegetable with high quality, satisfies strategies of green and sustainable development, and has wide application prospects when used as the agricultural bactericide.

Description

technical field [0001] The invention belongs to the technical field of biological control and relates to a bactericidal active compound, in particular to a pyridine heterocyclic quaternary ammonium salt cationic surfactant agricultural fungicide. Background technique [0002] Since the 1980s, the protected cultivation area of ​​fruits and vegetables has expanded rapidly, and the microclimate environment in the greenhouse is very conducive to the occurrence and development of plant diseases. The survival of human beings is inseparable from the relationship between animals and plants. The healthy growth and normal development of plants can provide humans with more and better grain, oil, food, fruits, vegetables and other various agricultural and sideline products. However, plant pathogenic bacteria can cause various diseases of plants, directly affect the yield and quality of products, and thus have a significant impact on human agricultural production and national economy. A...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01P3/00
Inventor 王丽艳田莹何显优孙雷赵冰
Owner QIQIHAR UNIVERSITY
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