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Bactericidal composition for preventing apple powdery mildew and preparation method of bactericidal composition

A water-emulsion and composition technology, which is applied in the water-emulsion and preparation fields of the fungicidal composition for preventing and treating apple powdery mildew, can solve problems such as non-conforming pollution-free green food, excessive pesticide residues in agricultural products, and difficulty in exerting drug effects, etc., to achieve delay Bacteria resistance, delaying bacteria resistance, and reducing pesticide residues

Inactive Publication Date: 2014-03-26
QINGDAO STAR CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the actual agricultural production process, the long-term, single, and large-scale use of the above two medicaments has caused the bacteria to produce great drug resistance, and the harm is quite serious. The organic solvents used in organic solvents are high in cost, heavy in environmental pollution, poor in targeting, and difficult to exert their efficacy. Therefore, the use of organic solvents must be increased to be effective. On the one hand, the pesticide residues in agricultural products exceed the standard, which does not meet the requirements of pollution-free green food. The large amount of use further promotes the emergence of bacterial resistance, forming a vicious circle

Method used

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  • Bactericidal composition for preventing apple powdery mildew and preparation method of bactericidal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 20% Difenoconazole Silfluazole aqueous emulsion preparation, the distribution ratio of each component is by weight:

[0034] Difenoconazole 6.5%

[0035] Silfluazole 13.5%

[0036] Phenylphenol Ethoxylate 4%

[0037] Alkylphenol ethoxylates 4%

[0038] Xylene 20%

[0039] Urea 5%

[0040] Silicone oil 0.2%

[0041] Xanthan Gum 0.25%

[0042] water balance

[0043]The preparation process is as follows: dissolve difenoconazole and silfluazole in xylene, add phenethylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether, and silicone oil and stir evenly as the oil phase, and xanthan gum 1. Add urea into water and stir evenly as the water phase, slowly add the water phase to the oil phase under stirring at 1000-2000r / min, and then shear at high speed at 4000-5000r / min for 30min to obtain the product.

Embodiment 2

[0045] 20% Difenoconazole Silfluazole aqueous emulsion preparation, the distribution ratio of each component is by weight:

[0046] Difenoconazole 10%

[0047] Silfluazole 10%

[0048] Phenylphenol Ethoxylate 5%

[0049] Alkylphenol polyoxyethylene ether formaldehyde condensate 3%

[0050] Toluene 20%

[0051] Propylene Glycol 4%

[0052] Silicone oil 0.2%

[0053] Carboxymethylcellulose 0.25%

[0054] water balance

[0055] The preparation method is the same as above.

Embodiment 3

[0057] 20% Difenoconazole Silfluazole aqueous emulsion preparation, the distribution ratio of each component is by weight:

[0058] Difenoconazole 13.5%

[0059] Silfluazole 6.5%

[0060] Phenylphenol Ethoxylate 5%

[0061] Castor Oil Ethoxylates 3%

[0062] Mineral spirits 20%

[0063] Glycerol 4%

[0064] Silicone oil 0.2%

[0065] Gum Arabic 0.25%

[0066] water balance

[0067] The preparation method is the same as above.

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Abstract

The invention belongs to the technical field of agricultural bactericidal preparations, and particularly relates to a water emulsion of a bactericidal composition for preventing apple powdery mildew and a preparation method of the bactericidal composition. In the water emulsion of the bactericidal composition for preventing the apple powdery mildew, provided by the invention, difenoconazole and simeconazole are compounded to realize a synergistic effect; by adopting the water emulsion and the preparation method of the water emulsion, the charging sequence, operation and the like are optimized, an original preparation technology is improved, and the water emulsion is used for preventing the apple powdery mildew to realize a protection and treatment effect on crops; the composition can delay the drug resistance of germs, the prevention effect is further improved, and the dosage of drugs, the pesticide residue and the environmental pollution are reduced.

Description

technical field [0001] The invention belongs to the technical field of agricultural fungicide preparations, and in particular relates to a fungicide composition for preventing and treating apple powdery mildew, its emulsion in water and a preparation method. Background technique [0002] The pathogen of apple powdery mildew is Podosphaera leucotricha (EII. et Ev.) Salm.], which belongs to Ascomycota subphylum Sclerotinia Erysidiomycetes. The asexual stage Oidium sp., belongs to the fungus Deuteromycetes. The white powder in the diseased part is the mycelium and conidia of the fungus. The hyphae mainly spread on the surface of the lesion, and use haustoria to penetrate into the cells to absorb nutrients; when the pathogen is serious, the hyphae can sometimes enter the mesophyll tissue. Powdery mildew mainly damages young seedlings, big tree buds, shoots, tender leaves, and also damages flowers and young fruits. The main feature of the disease is that the diseased part is c...

Claims

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Application Information

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IPC IPC(8): A01N55/10A01N43/653A01N25/04A01P3/00
Inventor 范迎春
Owner QINGDAO STAR CROPSCI
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