Bactericidal composition

A composition and benzamide technology, applied in the field of plant protection, to achieve the effects of increasing the control spectrum, reducing the use cost and reducing the number of times of use

Active Publication Date: 2014-06-25
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 chitosan oligosaccharides and the above-mentioned bactericidal ingredients. The inventor ha

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1 The control effect of the composition on tomato late blight

[0020] A single compound or composition is dissolved in an organic solvent to prepare a mother liquor of 1000 mg / L. According to the preliminary test of biological activity determination, a certain amount of the above-mentioned mother liquor was diluted with 0.1% Tween 80 to prepare the required concentration. During the experiment, the tomato plants were basically at the 5-leaf stage. The incidence of late blight was investigated before the first dose, and the corresponding single-dose and blank controls were set up. The hand-held sprayer was used for regular constant spraying, and each agent was sprayed with 10 plants and 7 after spraying once. Spray once more for -10 days. Investigate 10-14d after the second application, investigate all leaves of each plant, record the total number of leaves and the number of diseased leaves, and calculate the disease index and control effect according to the follo...

Example Embodiment

[0035] Example 2 The control effect of the composition on cucumber downy mildew

[0036] A single compound or composition is dissolved in an organic solvent to prepare a mother liquor of 1000 mg / L. According to the preliminary test of biological activity determination, a certain amount of the above-mentioned mother liquor was diluted with 0.1% Tween 80 to prepare the required concentration. During the experiment, the cucumber plants were basically at the 4-leaf stage, and the incidence of downy mildew was investigated before the first treatment. A pot experiment of cucumber downy mildew was carried out with the chitosan oligosaccharide composition, and the corresponding single dose and blank control were set. The hand-held sprayer was used for conventional constant spraying, each spraying 10 plants, and then spraying once after 7-10 days. Investigate 10-14d after the second application, investigate all leaves of each plant, record the total number of leaves and the number of dis...

Example Embodiment

[0051] Example 3 Field effect of the composition on wheat powdery mildew

[0052] Field test of wheat powdery mildew was carried out with the composition, and the corresponding single dose and blank control were set up, and each pesticide set up a plot of 20m 2 . Using a knapsack sprayer for regular constant spraying, the test was sprayed once at the booting stage and the early stage of blooming, before the application and 7-10 days after the second application, sampling at five points for each treatment, 50 plants per point, and all leaves of each plant were investigated. The total number of leaves and the number of diseased leaves were recorded, and the disease index and control effect were calculated according to the following classification method.

[0053] Blade classification method:

[0054] Level 0: No disease

[0055] Grade 1: The connected area of ​​the diseased spots accounts for less than 1% of the entire leaf area;

[0056] Grade 3: The connected area of ​​the diseased sp...

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Abstract

The invention belongs to the field of plant protection, and relates to a bactericidal composition. The composition comprises an effective dose of an active component A and an active component B, wherein A is chitosan oligosaccharide and B is selected from one of zoxamide, fenhexamid and spiroxamine. The invention also provides an application of the composition to prevention and treatment of various plant fungal diseases of crops. The composition has a good synergetic effect within a certain proportion range, the anti-disease effect of the composition is improved, and generation of drug resistance of pathogenic bacteria to a medicament is delayed.

Description

technical field [0001] The invention belongs to the field of plant protection, and relates to a bactericidal composition. The composition contains A component and B component, A is chitosan oligosaccharide, and B is selected from one of benzhexamid, fenhexamid, and spirulina , used to control late blight, downy mildew, powdery mildew, gray mold and other diseases. Background technique [0002] Compounds from organisms with good biodegradability have aroused great interest of pesticide researchers. Among these compounds, oligochitosan, which has no toxic side effects and is easy to biodegrade, has great potential and becomes a new agent for disease control. Oligochitosan, as an important class of plant-induced disease resistance agents, is derived from the research on oligosaccharides from plants. Studies have shown that oligochitosan can induce and stimulate plants to produce a series of defense responses in the process of resisting pathogenic bacteria. These The synergist...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01N43/30A01P3/00A01N37/20A01N37/24
Inventor 侯华民张善学
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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