CN105766979A - Fungicide for preventing and treating powdery mildew of astragali and preparing method of fungicide - Google Patents
Fungicide for preventing and treating powdery mildew of astragali and preparing method of fungicide Download PDFInfo
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- CN105766979A CN105766979A CN201410831387.5A CN201410831387A CN105766979A CN 105766979 A CN105766979 A CN 105766979A CN 201410831387 A CN201410831387 A CN 201410831387A CN 105766979 A CN105766979 A CN 105766979A
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- prochloraz
- difenoconazole
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Abstract
The invention aims at providing a fungicide for preventing and treating powdery mildew of astragali.The fungicide is prepared from effective active ingredients including difenoconazole and prochloraz, and further prepared from a cosolvent, an emulsifying agent, an anti-freezing agent, a defoaming agent, a thickening agent and water.The fungicide is characterized in that the weight ratio of difenoconazole to prochloraz is 1:2.The mode of agentia compounding is adopted, the original preparation technology is improved, and the fungicide is used for preventing and treating powdery mildew of astragali and has the effects of protection, treatment and eradication.The composition can delay the fungicide resistance of germs, the use quantity of the fungicide can be reduced, fungicide resides can be reduced, and pollution to the environment can be relieved.
Description
Technical field
The invention belongs to agricultural bacteriocide preparation technique field, be specifically related to a kind of antibacterial preventing and treating Radix Astragali powdery mildew and preparation method thereof.
Background technology
The cause of disease of Radix Astragali powdery mildew is Semen Pisi sativi powdery mildew (ErysiphePisiDC.), belongs to Ascomycotina gang pyrenomycetes Erysiphales.Mainly cause harm blade, it is possible to cause harm stem and pod.Blade face produces subcircular white powder speckle at first, connects in flakes after extension, and in edge, unconspicuous large stretch of white lead district, is covered with the mould layer of white powder above, and time serious, blade back and whole strain are covered by white lead.Later stage white lead is canescence, produces the little granule of countless black in mould layer, causes blade withered and yellow caducous, and Radix Astragali powdery mildew not only causes harm the positions such as blade, pistil of also causing harm, pod, stem stalk, and whole strain is covered with white lead, reaches 100% to the Radix Astragali in autumn field sickness rate.Pathogenic bacteria spore borrows hearsay to broadcast, and spreads to adjacent strain rapidly, is quickly covered with full field, and 8-9 month is in a bad way, it is common to rate and severity all reach 100%.
Difenoconazole is triazole bactericidal agent; English name: Difenoconazole; it is spectrum, safely and efficiently systemic fungicide; it it is sterol demethylation inhibitors; the Sporulation of phytopathogen there is strong inhibitory action; there is protection and therapeutical effect, foliar treatment or seed treatment can improve crop yield and guaranteed quality.To Ascomycetes, Basidiomycetes and the Fungi Imperfecti including Alternaria, Ascochyta, the mould genus of tail spore, ball seat Pseudomonas, Colletotrichum, Phoma, Septoria, Ramularia, Venturia; Erysiphaceae, Uredinales and some Seedborne pathogen have lasting protection and therapeutical effect, simultaneously that the effects such as uncinula necator disease, target, leaf spot of peanut is also fine.
Prochloraz is the herbal species in imidazoles antibacterial; English name: Prochloraz; ergosterol biosynthesis can be suppressed, there is protection and the effect rooted out, the ascomycetes on field crop, fruit tree, vegetable and ornamental plant and Fungi Imperfecti disease are had significant preventive effect.Can be used for the many diseases preventing and treating on cereal crop stem, leaf, fringe, such as powdery mildew, leaf spot etc..Prochloraz all widely uses both at home and abroad, and it mainly adopts gene induced technology, and activated plant disease-resistant gene is expressed, and quick-acting is good, and the lasting period is long, has systemic action.
But, in agricultural actual production process, owing to long-term single substantial amounts of use easily makes pathogenic bacteria develop immunity to drugs, such preventive effect declines, and cost accounting increases.And life-time service is unfavorable for the sustainable development of environment, it is the common method delaying disease drug resistance to produce that the effective ingredient of the different mechanisms of action carries out mixture, the obvious formula of complex role can significantly improve preventive effect, it is substantially reduced the dosage of pesticide, also can expand fungicidal spectrum, improve germicidal efficiency.
Summary of the invention
The present invention is directed to above-mentioned Problems existing and a kind of its aqueous emulsion of microbicide compositions preventing and treating Radix Astragali powdery mildew and preparation method are provided; adopt compounded combination mode; and improve original preparation technique; in order to prevent and treat Radix Astragali powdery mildew; there is protection, treat and root out the effect of disease, dosing can be reduced, slow down the drug-fast generation of pathogenic bacteria; reduce pesticide residues, reduce the pollution to environment.
The technical scheme is that
A kind of antibacterial preventing and treating Radix Astragali powdery mildew, effective active composition is Difenoconazole and Prochloraz, and containing emulsifying agent, cosolvent, antifreezing agent, defoamer, thickening agent and water, it is characterised in that Difenoconazole, Prochloraz weight ratio be 1:2.
The aqueous emulsion of described bactericidal composition, the weight ratio of Difenoconazole, Prochloraz, emulsifying agent, cosolvent, antifreezing agent, defoamer, thickening agent and water is 6:12:10:15:4:1:0.5:51.5.
Described cosolvent is selected from: dimethylbenzene, biodiesel, toluene, methanol, ethanol, n-butyl alcohol, isopropanol, solvent naphtha, dimethylformamide, dimethyl sulfoxide, aqueous solvent.
Described emulsifying agent is selected from: calcium dodecyl benzene sulfonate and one or more in aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene, styrylphenol polyoxyethylene ether, NPE, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether.
Described antifreezing agent is selected from: ethylene glycol, propylene glycol, glycerol, Polyethylene Glycol.
Described defoamer is selected from: organic silicone oil, silicone compound, C10-20Saturated fat acid compounds, C8-10Aliphatic alcohols compound.
Described thickening agent is selected from: xanthan gum, hydroxymethyl cellulose, hydroxyethyl cellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol.
The preparation method of aqueous emulsion of the present invention, its step is as follows: Difenoconazole and Prochloraz cosolvent are dissolved, addition emulsifying agent, antifreezing agent, defoamer stir, thickening agent is added to the water and stirs, then under 1000-2000r/min stirs, two solution are mixed, then carry out being sufficiently stirred for, shearing 60min, obtain aqueous emulsion product.
The water of the present invention is from tap water or ionized water, it is preferable that tap water.
Beneficial effects of the present invention: the bactericidal composition of the present invention adopts Difenoconazole and two kinds of effective ingredient of Prochloraz composite, play the purpose of Synergistic, prevention effect for Radix Astragali powdery mildew is good, and antimicrobial spectrum can be expanded by composite, that reduces medicine makes consumption, delays the drug-fast generation of pathogenic bacteria and reduces persticide residue.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention done concrete introduction.
Embodiment 1:
Difenoconazole prochloraz aqueous emulsion prepare, individual component proportion by weight:
By Difenoconazole and Prochloraz xylene soluble, add alkylphenol polyoxyethylene, styrylphenol oxygen vinyl Ether, ethylene glycol and organic silicone oil and stir as oil phase, hydroxymethyl cellulose is added to the water and stirs as aqueous phase, then by two-phase mixtures under 1000-2000r/min stirs, then under 4000r/min, carry out high-speed stirred, shear 60min, obtain aqueous emulsion product.
Above-described embodiment does not limit the present invention in any form, and all employings are equal to the technical scheme that the mode of replacement or equivalence exchange obtains, and all fall within protection scope of the present invention.
Claims (9)
1. for preventing and treating a bactericidal composition for Radix Astragali powdery mildew, including Difenoconazole and Prochloraz, and containing emulsifying agent, cosolvent, antifreezing agent, defoamer, thickening agent and water, it is characterised in that Difenoconazole, Prochloraz, weight ratio is 1:2.
2. the aqueous emulsion of bactericidal composition as claimed in claim 1, the weight ratio of described Difenoconazole, Prochloraz, emulsifying agent, cosolvent, antifreezing agent, defoamer, thickening agent and water is 6:12:10:15:4:1:0.5:51.5.
3. aqueous emulsion as claimed in claim 2, it is characterised in that described cosolvent is one or more in dimethylbenzene, biodiesel, toluene, methanol, ethanol, n-butyl alcohol, isopropanol, solvent naphtha, dimethylformamide, dimethyl sulfoxide, aqueous solvent.
4. as claimed in claim 2, it is characterized in that, described emulsifying agent is: calcium dodecyl benzene sulfonate and one or more in aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene, styrylphenol polyoxyethylene ether, NPE, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether.
5. as claimed in claim 2, it is characterised in that described antifreezing agent is: one or more in ethylene glycol, propylene glycol, glycerol, Polyethylene Glycol.
6. as claimed in claim 2, it is characterised in that described defoamer is: organic silicone oil, silicone compound, C10-20Saturated fat acid compounds, C8-10One or more in aliphatic alcohols compound.
7. as claimed in claim 2, it is characterised in that described thickening agent is: one or more in xanthan gum, hydroxymethyl cellulose, hydroxyethyl cellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol.
8. a kind of compositions for preventing and treating Radix Astragali powdery mildew as claimed in claim 1, it is characterised in that:
Described emulsifying agent is: alkylphenol polyoxyethylene and styrylphenol polyoxyethylene ether；
Described cosolvent is: dimethylbenzene；
Described antifreezing agent is: ethylene glycol；
Described defoamer is: organic silicone oil；
Described thickening agent is: hydroxymethyl cellulose.
9. the preparation method of aqueous emulsion as claimed in claim 2, its step is as follows: Difenoconazole and Prochloraz cosolvent are dissolved, addition emulsifying agent, antifreezing agent, defoamer stir, thickening agent is added to the water and stirs, then under 1000-2000r/min stirs, two solution are mixed, then carry out being sufficiently stirred for, shearing 60min, obtain aqueous emulsion product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410831387.5A CN105766979A (en) | 2014-12-26 | 2014-12-26 | Fungicide for preventing and treating powdery mildew of astragali and preparing method of fungicide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410831387.5A CN105766979A (en) | 2014-12-26 | 2014-12-26 | Fungicide for preventing and treating powdery mildew of astragali and preparing method of fungicide |
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| Publication Number | Publication Date |
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| CN105766979A true CN105766979A (en) | 2016-07-20 |
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| CN201410831387.5A Pending CN105766979A (en) | 2014-12-26 | 2014-12-26 | Fungicide for preventing and treating powdery mildew of astragali and preparing method of fungicide |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101379990A (en) * | 2008-07-04 | 2009-03-11 | 张少武 | Bactericide agent composition |
| CN101518229A (en) * | 2008-02-28 | 2009-09-02 | 北京绿色农华植保科技有限责任公司 | Preparation method of prochloraz aqueous emulsion |
| CN101755734A (en) * | 2009-11-04 | 2010-06-30 | 广西田园生化股份有限公司 | Ultra-low volume combination mecianment for controlling rice sheath blight disease |
| CN101861871A (en) * | 2010-03-02 | 2010-10-20 | 陕西美邦农资贸易有限公司 | Sterilization compound containing imazalil and prochloraz |
| CN102578129A (en) * | 2012-02-06 | 2012-07-18 | 山东禾宜生物科技有限公司 | Bactericide for controlling sigatoka |
-
2014
- 2014-12-26 CN CN201410831387.5A patent/CN105766979A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518229A (en) * | 2008-02-28 | 2009-09-02 | 北京绿色农华植保科技有限责任公司 | Preparation method of prochloraz aqueous emulsion |
| CN101379990A (en) * | 2008-07-04 | 2009-03-11 | 张少武 | Bactericide agent composition |
| CN101755734A (en) * | 2009-11-04 | 2010-06-30 | 广西田园生化股份有限公司 | Ultra-low volume combination mecianment for controlling rice sheath blight disease |
| CN101861871A (en) * | 2010-03-02 | 2010-10-20 | 陕西美邦农资贸易有限公司 | Sterilization compound containing imazalil and prochloraz |
| CN102578129A (en) * | 2012-02-06 | 2012-07-18 | 山东禾宜生物科技有限公司 | Bactericide for controlling sigatoka |
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Application publication date: 20160720 |
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