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Bactericidal composition

A composition, the technology of azoxystrobin, applied in the directions of fungicides, biocides, biocides, etc., can solve the problems of loss of control effect, generation of disease resistance, decline of compound control effect, etc., to reduce production and use costs, The effect of obvious synergy and reduction of field dosage

Inactive Publication Date: 2013-05-08
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, long-term single application of an active compound to prevent and control diseases will lead to the development of disease resistance, resulting in a decrease in the control effect of the compound, or even a complete loss of control effect

Method used

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  • Bactericidal composition
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Biological Assay Example 1: Indoor Toxicity Determination of Cucumber Downy Mildew in Combination of Amadoxamone and Azoxystrobin or Kresstrobin

[0015] Test object: Cucumber downy mildew (Pseudoperonospora cubensis)

[0016] The potted method was used in this experiment. Use a brush to wash distilled water at about 10°C and wash the sporangia on the back of cucumber leaves with downy mildew bacteria from the field, and make 3×10 5 sporangia / mL suspension. Select two cucumber seedlings at the true leaf stage with the same growth, and select 5 pots of cucumber seedlings for each treatment, and spray them with a Potter spray tower at a pressure of 50PSI, about 5mL per treatment. Five concentration gradients were set for each agent, and the same amount of water sprayed was used as the blank control. Spray and inoculate the sporangia suspension of cucumber downy mildew after 24 hours of chemical treatment. After inoculation, the cucumber seedlings are placed in an artif...

Embodiment 1

[0043] Example 1: 10.2% imidaclomidone · azoxystrobin suspension concentrate

[0044] Imidazole 10%, azoxystrobin 0.2%, sodium methylnaphthalene sulfonate formaldehyde condensate 10%, sodium lignosulfonate 10%, xanthan gum 3%, silicone oil 1%, glycerin 5%, water to make up to 100%.

[0045]This embodiment is applied to the prevention and treatment of zucchini downy mildew. The control effect of 10.2% imaclostrobin · azoxystrobin suspension concentrate was diluted with water 1000 times (the effective concentration of imaclostrobin was 100 μg / ml, and the effective concentration of azoxystrobin was 2 μg / ml) and sprayed, and the control effect was 7 days and 15 days after treatment They are 95.2% and 88.3% respectively. 15% imidaclomidone suspension was used at 1000 times (the effective concentration was 150 μg / ml) and 25% azoxystrobin suspension was used at 1500 times (the effective concentration was 166.7 μg / ml) in the same way. The control effects were 85.1% and 84.7% respec...

Embodiment 3

[0049] Example 3: 5% imaclostrobin · azoxystrobin suspension concentrate

[0050] 2% imidazolidin, 3% azoxystrobin, 8% nonylphenol polyoxyethylene ether phosphate, 1% carboxymethyl cellulose, 1% white carbon black, 4% glycerol, 2% polyvinyl alcohol, Water topped up to 100%.

[0051] This embodiment is applied to the control of lettuce downy mildew. The control effect of 5% imaclostrobin · azoxystrobin suspension was diluted with water by 500 times (the effective concentration of imaclostrobin was 40 μg / ml, and the effective concentration of azoxystrobin was 60 μg / ml) and sprayed. They are 96.2% and 91.3% respectively. 10% imidaclomidone suspension was used by 1000 times (effective concentration is 100 μg / ml) and 25% azoxystrobin suspension was used by 1500 times (effective concentration was 166.7 μg / ml) in the same way. The control effects were 84.1% and 83.7% respectively, and the control effects after 15 days were 78.3% and 76.3%. The synergistic effect of compounding im...

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Abstract

The invention relates to a bactericidal composition which comprises the effective ingredients of fenamidone (A) and azoxystrobin or kresoxim-methyl (B) in a mass ratio of 80:1-1:80. The composition provided by the invention has obvious synergistic action, and can be used for controlling diseases caused by Oomycetes fungi.

Description

technical field [0001] The invention relates to a bactericidal composition, in particular to a bactericidal composition containing imidazolidin. Background technique [0002] Fenamidone, the English common name of fenamidone, acts on the electron transfer system in the mitochondria, hinders the phosphorylation from ADP to ATP oxidation, so as to achieve the effect of sterilization, and can effectively prevent and control the diseases caused by oomycete pathogens. Unlike known fungicides, the mechanism of action is different, and there is no cross-resistance. [0003] However, long-term single application of an active compound to prevent and control diseases will lead to the emergence of disease resistance, resulting in a decrease in the control effect of the compound, or even a complete loss of control effect. In order to reduce the risk of phytopathogenic fungi developing drug resistance, the use of synergistic compositions to control harmful phytopathogenic fungi is one o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/54A01N43/50A01N37/50A01P3/00
Inventor 张洪曹明章张华东王新军李广泽孔建
Owner SHENZHEN NOPOSION AGROCHEM
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