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Complex bactericidal composition containing cyazofamid

A composition, the technology of Cyazofamid, is applied in the direction of fungicides, biocides, biocides, etc., to achieve the effects of reducing pesticide residues, improving control effects, and reducing environmental pollution

Active Publication Date: 2010-03-03
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there are not many medicaments to choose from in the prevention and treatment of oomycete diseases such as downy mildew, the phenomenon of single use and repeated use is quite obvious

Method used

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  • Complex bactericidal composition containing cyazofamid
  • Complex bactericidal composition containing cyazofamid

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Bioassay Example 1: Toxicity determination of the combination of Cyazofamid, Metalaxyl, Oxadaxyl or Cymoxanil against Cucumber Downy Mildew

[0015] Test object: Cucumber downy mildew pathogen

[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 cucumber downy mildew sporangia suspension 24 hours after the medicament treatment, place the cucumber seedlings in an artificial climate box (relative humidity 100%, temper...

example 2

[0044] Bioassay example 2: Toxicity determination of Cyazofamid and metalaxyl, benalaxyl, furalaxyl or propamocarb on tomato late blight

[0045] Test object: Tomato late blight pathogen

[0046] The potted method was used in the experiment. Tomatoes are cultivated in pots to the stage of 2-4 true leaves, numbered for later use. Cultivate the pathogenic bacteria used in the test on a suitable medium. After the sporangia are produced, wash the sporangia with sterile water and filter them with double-layer gauze to make 1×10 5 sporangia / mL sporangia suspension. According to the activity of the medicine, set 5-7 series of mass concentrations according to the activity of the medicine. Spray the liquid medicine evenly on the leaf surface until it is completely moistened, and wait for the liquid medicine to dry naturally for later use. For each treatment, 3 pots were repeated 4 times, and the treatment containing only solvent and surfactant but no active ingredient was set as a ...

Embodiment 1

[0070] Example 1: 20.4% Cyazofazol·Metalaxyl WP

[0071] Cyazofamid 20%

[0072] Metalaxyl 0.4%

[0073] Sodium Lauryl Sulfate (wetting agent) 2%

[0074] Sodium lignosulfonate (dispersant) 5%

[0075] Naphthalenesulfonate (dispersant) 3%

[0076] Kaolin (filler) topped up to 100%.

[0077] The active ingredients, various additives and fillers were fully mixed according to the proportion of the formula, and after being pulverized by a superfine pulverizer, 20.4% Cyazofamid·Metalaxyl wettable powder was prepared, which was used in field experiments on cucumber downy mildew.

[0078] Test method: Dilute and spray 20.4% Cyazofazol·Metalaxyl wettable powder by 4000 times (the effective concentration of Cyazofamid is 50 μg / ml, and the effective concentration of Metalaxyl is 1 μg / ml) with water. The method is used, and the dilution concentration is respectively 2000 times of 15% Cyazofamid Suspension Concentration (Cyazidazole effective concentration is 75 μ g / ml) and 30% Metal...

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Abstract

The invention relates to a bactericidal composition, the active ingredients are cyazofamid (A) and one of metalaxyl, metalaxyl-M, oxadixyl, benalaxyl, furalaxyl, cymoxanil or propamocarb (B), and the weight ratio of A to B is 50:1-1:50. The complex of A and B realizes the obvious synergistic effect, and the bactericidal composition is used for the disease control of the crops of fruit trees, flowers, cotton, wheat, rice, rapeseed, vegetables and the like, especially the diseases of oomycetes.

Description

technical field [0001] The invention relates to a bactericidal composition, in particular to a compound bactericidal composition containing Cyazofim. Background technique [0002] In recent years, due to single drug use and other unscientific drug use methods, many diseases have developed resistance to many pesticides currently used, which has become a major problem in chemical control. Due to the enhanced resistance, farmers frequently apply pesticides, and the dosage and frequency of pesticides increase accordingly, resulting in increased burden on farmers and increased environmental pollution. It is particularly outstanding in the chemical control of diseases caused by oomycetes. Since there are not many agents to choose from in the prevention and treatment of oomycete diseases such as downy mildew, the phenomenon of single use and repeated use is quite obvious. Therefore, there is an urgent need for a synergistic fungicidal composition to solve this problem. [0003] ...

Claims

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Application Information

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IPC IPC(8): A01N47/34A01N43/50A01N37/46A01N43/76A01N43/08A01N47/12A01P3/00
Inventor 张洪张承来曹明章刘胜召王新军陈树茂
Owner SHENZHEN NOPOSION AGROCHEM
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