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Composition containing oligosaccharide and miazines bactericidal ingredients\

A composition, pyrimidine technology, applied in the directions of fungicides, biocides, biocides, etc., to achieve the effects of improving control effect, delaying drug resistance, and increasing control spectrum

Active Publication Date: 2014-06-04
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the compound research of oligosaccharides and the above-mentioned bactericidal ingredients

Method used

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  • Composition containing oligosaccharide and miazines bactericidal ingredients\
  • Composition containing oligosaccharide and miazines bactericidal ingredients\
  • Composition containing oligosaccharide and miazines bactericidal ingredients\

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Control effect of chitosan oligosaccharide-containing composition on rice blast

[0022] A single compound or composition is dissolved in an organic solvent to prepare a 1000 mg / L mother solution. According to the pretest of biological activity determination, a certain amount of the above mother solution was diluted with 0.1% Tween 80 to prepare the required concentration. During the measurement, first spray the medicinal solution on the potted rice plants, then inoculate the pathogenic bacteria, keep moist and cultivate for 24 hours, then place them in the greenhouse for cultivation, and measure the percentage of plant foliage infection after a certain period of time. Convert percentages to efficacy using Abbot's formula.

[0023]

[0024] Theoretical control effect (%)=x+y-xy

[0025] x is the control effect of active component A when the concentration is a, and y is the control effect of active component B when the concentration is b. Compare the theo...

Embodiment 2

[0030] Example 2 Control effect of pectin oligosaccharide composition on cucumber downy mildew

[0031] A single compound or composition is dissolved in an organic solvent to prepare a 1000 mg / L mother solution. According to the pretest of biological activity determination, a certain amount of the above mother solution was diluted with 0.1% Tween 80 to prepare the required concentration. During the test, the cucumber plants were basically at the 4-leaf stage, and the incidence of downy mildew was investigated before the first medicine. A pot test of cucumber downy mildew was carried out with the pectin oligosaccharide composition, and a corresponding single dose and a blank control were set up, and a hand-held sprayer was used for conventional constant spraying. Each dose sprayed 10 plants, and sprayed once 7-10 days after spraying once. 10-14 days after the second spraying, investigate all the leaves of each plant, record the total number of leaves and the number of diseased...

Embodiment 3

[0045] Example 3 Field test of sodium alginate oligosaccharide composition on wheat powdery mildew

[0046]A field test on wheat powdery mildew was carried out with the composition, and a corresponding single dose and a blank control were set up, and a plot of 30 m2 was set up for each dose. A knapsack sprayer was used for conventional constant spraying, and the test was sprayed once at the booting stage and the early flowering stage, before the drug and 7-10 days after the second spraying, and each treatment was sampled at five points, 50 plants at each point, and all leaves were investigated for each plant. Record and investigate the total number of leaves and the number of diseased leaves, and calculate the disease index and control effect according to the following grading method.

[0047] Leaf Grading Method:

[0048] Level 0: no disease

[0049] Level 1: The connected area of ​​disease spots accounts for less than 1% of the entire leaf area;

[0050] Grade 3: The conn...

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PUM

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Abstract

The invention belongs to the field of plant protection and provides a composition containing oligosaccharide and miazines bactericidal ingredient. Oligosaccharide in the composition is selected from at least one of chitosan oligosaccharide, pectin oligosaccharide and sodium alginate oligosaccharide, the miazines bactericidal ingredient is selected from one of Fluopicolide, fluazinam, pyrifenox and boscalid, and the mass fraction ratio of oligosaccharide to miazines bactericidal ingredient is 1:10-10:1. The invention also provides application of the composition to prevention and control of agricultural fungal diseases of crops; the composition has good synergism in a certain proportioning range, so as to improve a disease prevention effect and delay formation of pesticide resistance of pathogenic bacteria to chemicals.

Description

technical field [0001] The invention relates to a composition containing oligosaccharides and pyrimidine fungicidal ingredients, which is used for preventing and treating rice blast, downy mildew, powdery mildew, smut, anthracnose, late blight, leaf spot, scab, etc. Various diseases. Background technique [0002] Compounds from organisms with good biodegradability have aroused great interest of pesticide researchers. Among these compounds, oligosaccharides that have no toxic side effects and are easily biodegradable have great potential to become new agents for disease control. As an important class of plant-induced disease resistance agents, oligosaccharides are derived from the research on oligosaccharides from plants. Studies have shown that oligosaccharides can induce and stimulate plants to produce a series of defense responses in the process of resisting pathogenic bacteria. These defense responses The synergistic effect prevents the spread and invasion of pathogenic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/40A01P3/00A01N43/16
Inventor 侯华民张善学
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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