Sterilization combination for preventing and curing pear scab and aqueous emulsion thereof and preparation method thereof

A technology of composition and water-emulsion, which is applied in the field of water-emulsion and preparation of the fungicidal composition for preventing and treating pear scab, can solve problems such as non-conformity to pollution-free green food, excessive pesticide residues in agricultural products, and difficulty in exerting drug effects, etc. To achieve the effect of delaying the emergence of bacterial resistance, delaying bacterial resistance, and reducing pesticide residues

Active Publication Date: 2012-09-05
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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  • Sterilization combination for preventing and curing pear scab and aqueous emulsion thereof and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 20% difenoconazole · fluazinam aqueous emulsion preparation, the distribution ratio of each component is by weight:

[0035] Difenoconazole 6.5%

[0036] Fluazinam 13.5%

[0037] Phenylphenol Ethoxylate 4%

[0038] Alkylphenol ethoxylates 4%

[0039] Xylene 20%

[0040] Urea 5%

[0041] Silicone oil 0.2%

[0042] Xanthan Gum 0.25%

[0043] water balance

[0044] The preparation process is as follows: dissolve difenoconazole and fluazinam 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

[0046] 20% difenoconazole · fluazinam aqueous emulsion preparation, the distribution ratio of each component is by weight:

[0047] Difenoconazole 10%

[0048] Fluazinam 10%

[0049] Phenylphenol Ethoxylate 5%

[0050] Alkylphenol polyoxyethylene ether formaldehyde condensate 3%

[0051] Toluene 20%

[0052] Propylene Glycol 4%

[0053] Silicone oil 0.2%

[0054] Carboxymethylcellulose 0.25%

[0055] water balance

[0056] The preparation method is the same as above.

Embodiment 3

[0058] 20% difenoconazole · fluazinam aqueous emulsion preparation, the distribution ratio of each component is by weight:

[0059] Difenoconazole 13.5%

[0060] Fluazinam 6.5%

[0061] Phenylphenol Ethoxylate 5%

[0062] Castor Oil Ethoxylates 3%

[0063] Mineral spirit 20%

[0064] Glycerol 4%

[0065] Silicone oil 0.2%

[0066] Gum Arabic 0.25%

[0067] water balance

[0068] The preparation method is the same as above.

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Abstract

The invention belongs to the technical field of an agricultural bactericide preparation, in particular to a sterilization combination for preventing and curing pear scab and an aqueous emulsion thereof and a preparation method thereof. The sterilization combination for preventing and curing the pear scab and the aqueous emulsion thereof take difenoconazole to recompose with fluazinam for having asynergistic effect, optimize feeding sequence, operation and the like by adopting the aqueous emulsion and the preparation method thereof, improve the original preparation technology for preventing and curing the pear scab, and have protection and therapeutic effects on crops; and the combination can delay drug resistance of germs, further improve the preventing and curing effect, decrease usage amount of drugs, and reduce pesticide residues and environmental pollution.

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 pear scab, its emulsion in water and a preparation method. Background technique [0002] Pear scab, also known as scab, is a major disease of pear trees. It mainly damages fruits, fruit stems, leaves, petioles and new shoots, causing a large number of leaves to fall in the early stage of pear trees, and young fruits are deformed and unable to expand normally. , round black diseased scars of different sizes on the fruit surface, hardened diseased spots, rough surface, and reduced fruiting in the second year of the diseased tree, which greatly affects the yield and often causes major losses in production. [0003] Difenoconazole is a broad-spectrum, safe and efficient systemic fungicide. It is a sterol demethylation inhibitor. It has a strong inhibitory effect on the sporulation of plant pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/653A01N43/40A01P3/00A01N25/04
Inventor 李国安孙明明
Owner QINGDAO STAR CROPSCI
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